summaryrefslogtreecommitdiffstats
path: root/gcc/ChangeLog.tree-ssa
blob: 8dc43dac2761144e1df06106d617ce611a222ab8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
8518
8519
8520
8521
8522
8523
8524
8525
8526
8527
8528
8529
8530
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
8660
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
8675
8676
8677
8678
8679
8680
8681
8682
8683
8684
8685
8686
8687
8688
8689
8690
8691
8692
8693
8694
8695
8696
8697
8698
8699
8700
8701
8702
8703
8704
8705
8706
8707
8708
8709
8710
8711
8712
8713
8714
8715
8716
8717
8718
8719
8720
8721
8722
8723
8724
8725
8726
8727
8728
8729
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741
8742
8743
8744
8745
8746
8747
8748
8749
8750
8751
8752
8753
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8764
8765
8766
8767
8768
8769
8770
8771
8772
8773
8774
8775
8776
8777
8778
8779
8780
8781
8782
8783
8784
8785
8786
8787
8788
8789
8790
8791
8792
8793
8794
8795
8796
8797
8798
8799
8800
8801
8802
8803
8804
8805
8806
8807
8808
8809
8810
8811
8812
8813
8814
8815
8816
8817
8818
8819
8820
8821
8822
8823
8824
8825
8826
8827
8828
8829
8830
8831
8832
8833
8834
8835
8836
8837
8838
8839
8840
8841
8842
8843
8844
8845
8846
8847
8848
8849
8850
8851
8852
8853
8854
8855
8856
8857
8858
8859
8860
8861
8862
8863
8864
8865
8866
8867
8868
8869
8870
8871
8872
8873
8874
8875
8876
8877
8878
8879
8880
8881
8882
8883
8884
8885
8886
8887
8888
8889
8890
8891
8892
8893
8894
8895
8896
8897
8898
8899
8900
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914
8915
8916
8917
8918
8919
8920
8921
8922
8923
8924
8925
8926
8927
8928
8929
8930
8931
8932
8933
8934
8935
8936
8937
8938
8939
8940
8941
8942
8943
8944
8945
8946
8947
8948
8949
8950
8951
8952
8953
8954
8955
8956
8957
8958
8959
8960
8961
8962
8963
8964
8965
8966
8967
8968
8969
8970
8971
8972
8973
8974
8975
8976
8977
8978
8979
8980
8981
8982
8983
8984
8985
8986
8987
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
9081
9082
9083
9084
9085
9086
9087
9088
9089
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104
9105
9106
9107
9108
9109
9110
9111
9112
9113
9114
9115
9116
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
9145
9146
9147
9148
9149
9150
9151
9152
9153
9154
9155
9156
9157
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396
9397
9398
9399
9400
9401
9402
9403
9404
9405
9406
9407
9408
9409
9410
9411
9412
9413
9414
9415
9416
9417
9418
9419
9420
9421
9422
9423
9424
9425
9426
9427
9428
9429
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441
9442
9443
9444
9445
9446
9447
9448
9449
9450
9451
9452
9453
9454
9455
9456
9457
9458
9459
9460
9461
9462
9463
9464
9465
9466
9467
9468
9469
9470
9471
9472
9473
9474
9475
9476
9477
9478
9479
9480
9481
9482
9483
9484
9485
9486
9487
9488
9489
9490
9491
9492
9493
9494
9495
9496
9497
9498
9499
9500
9501
9502
9503
9504
9505
9506
9507
9508
9509
9510
9511
9512
9513
9514
9515
9516
9517
9518
9519
9520
9521
9522
9523
9524
9525
9526
9527
9528
9529
9530
9531
9532
9533
9534
9535
9536
9537
9538
9539
9540
9541
9542
9543
9544
9545
9546
9547
9548
9549
9550
9551
9552
9553
9554
9555
9556
9557
9558
9559
9560
9561
9562
9563
9564
9565
9566
9567
9568
9569
9570
9571
9572
9573
9574
9575
9576
9577
9578
9579
9580
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590
9591
9592
9593
9594
9595
9596
9597
9598
9599
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629
9630
9631
9632
9633
9634
9635
9636
9637
9638
9639
9640
9641
9642
9643
9644
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655
9656
9657
9658
9659
9660
9661
9662
9663
9664
9665
9666
9667
9668
9669
9670
9671
9672
9673
9674
9675
9676
9677
9678
9679
9680
9681
9682
9683
9684
9685
9686
9687
9688
9689
9690
9691
9692
9693
9694
9695
9696
9697
9698
9699
9700
9701
9702
9703
9704
9705
9706
9707
9708
9709
9710
9711
9712
9713
9714
9715
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731
9732
9733
9734
9735
9736
9737
9738
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
9756
9757
9758
9759
9760
9761
9762
9763
9764
9765
9766
9767
9768
9769
9770
9771
9772
9773
9774
9775
9776
9777
9778
9779
9780
9781
9782
9783
9784
9785
9786
9787
9788
9789
9790
9791
9792
9793
9794
9795
9796
9797
9798
9799
9800
9801
9802
9803
9804
9805
9806
9807
9808
9809
9810
9811
9812
9813
9814
9815
9816
9817
9818
9819
9820
9821
9822
9823
9824
9825
9826
9827
9828
9829
9830
9831
9832
9833
9834
9835
9836
9837
9838
9839
9840
9841
9842
9843
9844
9845
9846
9847
9848
9849
9850
9851
9852
9853
9854
9855
9856
9857
9858
9859
9860
9861
9862
9863
9864
9865
9866
9867
9868
9869
9870
9871
9872
9873
9874
9875
9876
9877
9878
9879
9880
9881
9882
9883
9884
9885
9886
9887
9888
9889
9890
9891
9892
9893
9894
9895
9896
9897
9898
9899
9900
9901
9902
9903
9904
9905
9906
9907
9908
9909
9910
9911
9912
9913
9914
9915
9916
9917
9918
9919
9920
9921
9922
9923
9924
9925
9926
9927
9928
9929
9930
9931
9932
9933
9934
9935
9936
9937
9938
9939
9940
9941
9942
9943
9944
9945
9946
9947
9948
9949
9950
9951
9952
9953
9954
9955
9956
9957
9958
9959
9960
9961
9962
9963
9964
9965
9966
9967
9968
9969
9970
9971
9972
9973
9974
9975
9976
9977
9978
9979
9980
9981
9982
9983
9984
9985
9986
9987
9988
9989
9990
9991
9992
9993
9994
9995
9996
9997
9998
9999
10000
10001
10002
10003
10004
10005
10006
10007
10008
10009
10010
10011
10012
10013
10014
10015
10016
10017
10018
10019
10020
10021
10022
10023
10024
10025
10026
10027
10028
10029
10030
10031
10032
10033
10034
10035
10036
10037
10038
10039
10040
10041
10042
10043
10044
10045
10046
10047
10048
10049
10050
10051
10052
10053
10054
10055
10056
10057
10058
10059
10060
10061
10062
10063
10064
10065
10066
10067
10068
10069
10070
10071
10072
10073
10074
10075
10076
10077
10078
10079
10080
10081
10082
10083
10084
10085
10086
10087
10088
10089
10090
10091
10092
10093
10094
10095
10096
10097
10098
10099
10100
10101
10102
10103
10104
10105
10106
10107
10108
10109
10110
10111
10112
10113
10114
10115
10116
10117
10118
10119
10120
10121
10122
10123
10124
10125
10126
10127
10128
10129
10130
10131
10132
10133
10134
10135
10136
10137
10138
10139
10140
10141
10142
10143
10144
10145
10146
10147
10148
10149
10150
10151
10152
10153
10154
10155
10156
10157
10158
10159
10160
10161
10162
10163
10164
10165
10166
10167
10168
10169
10170
10171
10172
10173
10174
10175
10176
10177
10178
10179
10180
10181
10182
10183
10184
10185
10186
10187
10188
10189
10190
10191
10192
10193
10194
10195
10196
10197
10198
10199
10200
10201
10202
10203
10204
10205
10206
10207
10208
10209
10210
10211
10212
10213
10214
10215
10216
10217
10218
10219
10220
10221
10222
10223
10224
10225
10226
10227
10228
10229
10230
10231
10232
10233
10234
10235
10236
10237
10238
10239
10240
10241
10242
10243
10244
10245
10246
10247
10248
10249
10250
10251
10252
10253
10254
10255
10256
10257
10258
10259
10260
10261
10262
10263
10264
10265
10266
10267
10268
10269
10270
10271
10272
10273
10274
10275
10276
10277
10278
10279
10280
10281
10282
10283
10284
10285
10286
10287
10288
10289
10290
10291
10292
10293
10294
10295
10296
10297
10298
10299
10300
10301
10302
10303
10304
10305
10306
10307
10308
10309
10310
10311
10312
10313
10314
10315
10316
10317
10318
10319
10320
10321
10322
10323
10324
10325
10326
10327
10328
10329
10330
10331
10332
10333
10334
10335
10336
10337
10338
10339
10340
10341
10342
10343
10344
10345
10346
10347
10348
10349
10350
10351
10352
10353
10354
10355
10356
10357
10358
10359
10360
10361
10362
10363
10364
10365
10366
10367
10368
10369
10370
10371
10372
10373
10374
10375
10376
10377
10378
10379
10380
10381
10382
10383
10384
10385
10386
10387
10388
10389
10390
10391
10392
10393
10394
10395
10396
10397
10398
10399
10400
10401
10402
10403
10404
10405
10406
10407
10408
10409
10410
10411
10412
10413
10414
10415
10416
10417
10418
10419
10420
10421
10422
10423
10424
10425
10426
10427
10428
10429
10430
10431
10432
10433
10434
10435
10436
10437
10438
10439
10440
10441
10442
10443
10444
10445
10446
10447
10448
10449
10450
10451
10452
10453
10454
10455
10456
10457
10458
10459
10460
10461
10462
10463
10464
10465
10466
10467
10468
10469
10470
10471
10472
10473
10474
10475
10476
10477
10478
10479
10480
10481
10482
10483
10484
10485
10486
10487
10488
10489
10490
10491
10492
10493
10494
10495
10496
10497
10498
10499
10500
10501
10502
10503
10504
10505
10506
10507
10508
10509
10510
10511
10512
10513
10514
10515
10516
10517
10518
10519
10520
10521
10522
10523
10524
10525
10526
10527
10528
10529
10530
10531
10532
10533
10534
10535
10536
10537
10538
10539
10540
10541
10542
10543
10544
10545
10546
10547
10548
10549
10550
10551
10552
10553
10554
10555
10556
10557
10558
10559
10560
10561
10562
10563
10564
10565
10566
10567
10568
10569
10570
10571
10572
10573
10574
10575
10576
10577
10578
10579
10580
10581
10582
10583
10584
10585
10586
10587
10588
10589
10590
10591
10592
10593
10594
10595
10596
10597
10598
10599
10600
10601
10602
10603
10604
10605
10606
10607
10608
10609
10610
10611
10612
10613
10614
10615
10616
10617
10618
10619
10620
10621
10622
10623
10624
10625
10626
10627
10628
10629
10630
10631
10632
10633
10634
10635
10636
10637
10638
10639
10640
10641
10642
10643
10644
10645
10646
10647
10648
10649
10650
10651
10652
10653
10654
10655
10656
10657
10658
10659
10660
10661
10662
10663
10664
10665
10666
10667
10668
10669
10670
10671
10672
10673
10674
10675
10676
10677
10678
10679
10680
10681
10682
10683
10684
10685
10686
10687
10688
10689
10690
10691
10692
10693
10694
10695
10696
10697
10698
10699
10700
10701
10702
10703
10704
10705
10706
10707
10708
10709
10710
10711
10712
10713
10714
10715
10716
10717
10718
10719
10720
10721
10722
10723
10724
10725
10726
10727
10728
10729
10730
10731
10732
10733
10734
10735
10736
10737
10738
10739
10740
10741
10742
10743
10744
10745
10746
10747
10748
10749
10750
10751
10752
10753
10754
10755
10756
10757
10758
10759
10760
10761
10762
10763
10764
10765
10766
10767
10768
10769
10770
10771
10772
10773
10774
10775
10776
10777
10778
10779
10780
10781
10782
10783
10784
10785
10786
10787
10788
10789
10790
10791
10792
10793
10794
10795
10796
10797
10798
10799
10800
10801
10802
10803
10804
10805
10806
10807
10808
10809
10810
10811
10812
10813
10814
10815
10816
10817
10818
10819
10820
10821
10822
10823
10824
10825
10826
10827
10828
10829
10830
10831
10832
10833
10834
10835
10836
10837
10838
10839
10840
10841
10842
10843
10844
10845
10846
10847
10848
10849
10850
10851
10852
10853
10854
10855
10856
10857
10858
10859
10860
10861
10862
10863
10864
10865
10866
10867
10868
10869
10870
10871
10872
10873
10874
10875
10876
10877
10878
10879
10880
10881
10882
10883
10884
10885
10886
10887
10888
10889
10890
10891
10892
10893
10894
10895
10896
10897
10898
10899
10900
10901
10902
10903
10904
10905
10906
10907
10908
10909
10910
10911
10912
10913
10914
10915
10916
10917
10918
10919
10920
10921
10922
10923
10924
10925
10926
10927
10928
10929
10930
10931
10932
10933
10934
10935
10936
10937
10938
10939
10940
10941
10942
10943
10944
10945
10946
10947
10948
10949
10950
10951
10952
10953
10954
10955
10956
10957
10958
10959
10960
10961
10962
10963
10964
10965
10966
10967
10968
10969
10970
10971
10972
10973
10974
10975
10976
10977
10978
10979
10980
10981
10982
10983
10984
10985
10986
10987
10988
10989
10990
10991
10992
10993
10994
10995
10996
10997
10998
10999
11000
11001
11002
11003
11004
11005
11006
11007
11008
11009
11010
11011
11012
11013
11014
11015
11016
11017
11018
11019
11020
11021
11022
11023
11024
11025
11026
11027
11028
11029
11030
11031
11032
11033
11034
11035
11036
11037
11038
11039
11040
11041
11042
11043
11044
11045
11046
11047
11048
11049
11050
11051
11052
11053
11054
11055
11056
11057
11058
11059
11060
11061
11062
11063
11064
11065
11066
11067
11068
11069
11070
11071
11072
11073
11074
11075
11076
11077
11078
11079
11080
11081
11082
11083
11084
11085
11086
11087
11088
11089
11090
11091
11092
11093
11094
11095
11096
11097
11098
11099
11100
11101
11102
11103
11104
11105
11106
11107
11108
11109
11110
11111
11112
11113
11114
11115
11116
11117
11118
11119
11120
11121
11122
11123
11124
11125
11126
11127
11128
11129
11130
11131
11132
11133
11134
11135
11136
11137
11138
11139
11140
11141
11142
11143
11144
11145
11146
11147
11148
11149
11150
11151
11152
11153
11154
11155
11156
11157
11158
11159
11160
11161
11162
11163
11164
11165
11166
11167
11168
11169
11170
11171
11172
11173
11174
11175
11176
11177
11178
11179
11180
11181
11182
11183
11184
11185
11186
11187
11188
11189
11190
11191
11192
11193
11194
11195
11196
11197
11198
11199
11200
11201
11202
11203
11204
11205
11206
11207
11208
11209
11210
11211
11212
11213
11214
11215
11216
11217
11218
11219
11220
11221
11222
11223
11224
11225
11226
11227
11228
11229
11230
11231
11232
11233
11234
11235
11236
11237
11238
11239
11240
11241
11242
11243
11244
11245
11246
11247
11248
11249
11250
11251
11252
11253
11254
11255
11256
11257
11258
11259
11260
11261
11262
11263
11264
11265
11266
11267
11268
11269
11270
11271
11272
11273
11274
11275
11276
11277
11278
11279
11280
11281
11282
11283
11284
11285
11286
11287
11288
11289
11290
11291
11292
11293
11294
11295
11296
11297
11298
11299
11300
11301
11302
11303
11304
11305
11306
11307
11308
11309
11310
11311
11312
11313
11314
11315
11316
11317
11318
11319
11320
11321
11322
11323
11324
11325
11326
11327
11328
11329
11330
11331
11332
11333
11334
11335
11336
11337
11338
11339
11340
11341
11342
11343
11344
11345
11346
11347
11348
11349
11350
11351
11352
11353
11354
11355
11356
11357
11358
11359
11360
11361
11362
11363
11364
11365
11366
11367
11368
11369
11370
11371
11372
11373
11374
11375
11376
11377
11378
11379
11380
11381
11382
11383
11384
11385
11386
11387
11388
11389
11390
11391
11392
11393
11394
11395
11396
11397
11398
11399
11400
11401
11402
11403
11404
11405
11406
11407
11408
11409
11410
11411
11412
11413
11414
11415
11416
11417
11418
11419
11420
11421
11422
11423
11424
11425
11426
11427
11428
11429
11430
11431
11432
11433
11434
11435
11436
11437
11438
11439
11440
11441
11442
11443
11444
11445
11446
11447
11448
11449
11450
11451
11452
11453
11454
11455
11456
11457
11458
11459
11460
11461
11462
11463
11464
11465
11466
11467
11468
11469
11470
11471
11472
11473
11474
11475
11476
11477
11478
11479
11480
11481
11482
11483
11484
11485
11486
11487
11488
11489
11490
11491
11492
11493
11494
11495
11496
11497
11498
11499
11500
11501
11502
11503
11504
11505
11506
11507
11508
11509
11510
11511
11512
11513
11514
11515
11516
11517
11518
11519
11520
11521
11522
11523
11524
11525
11526
11527
11528
11529
11530
11531
11532
11533
11534
11535
11536
11537
11538
11539
11540
11541
11542
11543
11544
11545
11546
11547
11548
11549
11550
11551
11552
11553
11554
11555
11556
11557
11558
11559
11560
11561
11562
11563
11564
11565
11566
11567
11568
11569
11570
11571
11572
11573
11574
11575
11576
11577
11578
11579
11580
11581
11582
11583
11584
11585
11586
11587
11588
11589
11590
11591
11592
11593
11594
11595
11596
11597
11598
11599
11600
11601
11602
11603
11604
11605
11606
11607
11608
11609
11610
11611
11612
11613
11614
11615
11616
11617
11618
11619
11620
11621
11622
11623
11624
11625
11626
11627
11628
11629
11630
11631
11632
11633
11634
11635
11636
11637
11638
11639
11640
11641
11642
11643
11644
11645
11646
11647
11648
11649
11650
11651
11652
11653
11654
11655
11656
11657
11658
11659
11660
11661
11662
11663
11664
11665
11666
11667
11668
11669
11670
11671
11672
11673
11674
11675
11676
11677
11678
11679
11680
11681
11682
11683
11684
11685
11686
11687
11688
11689
11690
11691
11692
11693
11694
11695
11696
11697
11698
11699
11700
11701
11702
11703
11704
11705
11706
11707
11708
11709
11710
11711
11712
11713
11714
11715
11716
11717
11718
11719
11720
11721
11722
11723
11724
11725
11726
11727
11728
11729
11730
11731
11732
11733
11734
11735
11736
11737
11738
11739
11740
11741
11742
11743
11744
11745
11746
11747
11748
11749
11750
11751
11752
11753
11754
11755
11756
11757
11758
11759
11760
11761
11762
11763
11764
11765
11766
11767
11768
11769
11770
11771
11772
11773
11774
11775
11776
11777
11778
11779
11780
11781
11782
11783
11784
11785
11786
11787
11788
11789
11790
11791
11792
11793
11794
11795
11796
11797
11798
11799
11800
11801
11802
11803
11804
11805
11806
11807
11808
11809
11810
11811
11812
11813
11814
11815
11816
11817
11818
11819
11820
11821
11822
11823
11824
11825
11826
11827
11828
11829
11830
11831
11832
11833
11834
11835
11836
11837
11838
11839
11840
11841
11842
11843
11844
11845
11846
11847
11848
11849
11850
11851
11852
11853
11854
11855
11856
11857
11858
11859
11860
11861
11862
11863
11864
11865
11866
11867
11868
11869
11870
11871
11872
11873
11874
11875
11876
11877
11878
11879
11880
11881
11882
11883
11884
11885
11886
11887
11888
11889
11890
11891
11892
11893
11894
11895
11896
11897
11898
11899
11900
11901
11902
11903
11904
11905
11906
11907
11908
11909
11910
11911
11912
11913
11914
11915
11916
11917
11918
11919
11920
11921
11922
11923
11924
11925
11926
11927
11928
11929
11930
11931
11932
11933
11934
11935
11936
11937
11938
11939
11940
11941
11942
11943
11944
11945
11946
11947
11948
11949
11950
11951
11952
11953
11954
11955
11956
11957
11958
11959
11960
11961
11962
11963
11964
11965
11966
11967
11968
11969
11970
11971
11972
11973
11974
11975
11976
11977
11978
11979
11980
11981
11982
11983
11984
11985
11986
11987
11988
11989
11990
11991
11992
11993
11994
11995
11996
11997
11998
11999
12000
12001
12002
12003
12004
12005
12006
12007
12008
12009
12010
12011
12012
12013
12014
12015
12016
12017
12018
12019
12020
12021
12022
12023
12024
12025
12026
12027
12028
12029
12030
12031
12032
12033
12034
12035
12036
12037
12038
12039
12040
12041
12042
12043
12044
12045
12046
12047
12048
12049
12050
12051
12052
12053
12054
12055
12056
12057
12058
12059
12060
12061
12062
12063
12064
12065
12066
12067
12068
12069
12070
12071
12072
12073
12074
12075
12076
12077
12078
12079
12080
12081
12082
12083
12084
12085
12086
12087
12088
12089
12090
12091
12092
12093
12094
12095
12096
12097
12098
12099
12100
12101
12102
12103
12104
12105
12106
12107
12108
12109
12110
12111
12112
12113
12114
12115
12116
12117
12118
12119
12120
12121
12122
12123
12124
12125
12126
12127
12128
12129
12130
12131
12132
12133
12134
12135
12136
12137
12138
12139
12140
12141
12142
12143
12144
12145
12146
12147
12148
12149
12150
12151
12152
12153
12154
12155
12156
12157
12158
12159
12160
12161
12162
12163
12164
12165
12166
12167
12168
12169
12170
12171
12172
12173
12174
12175
12176
12177
12178
12179
12180
12181
12182
12183
12184
12185
12186
12187
12188
12189
12190
12191
12192
12193
12194
12195
12196
12197
12198
12199
12200
12201
12202
12203
12204
12205
12206
12207
12208
12209
12210
12211
12212
12213
12214
12215
12216
12217
12218
12219
12220
12221
12222
12223
12224
12225
12226
12227
12228
12229
12230
12231
12232
12233
12234
12235
12236
12237
12238
12239
12240
12241
12242
12243
12244
12245
12246
12247
12248
12249
12250
12251
12252
12253
12254
12255
12256
12257
12258
12259
12260
12261
12262
12263
12264
12265
12266
12267
12268
12269
12270
12271
12272
12273
12274
12275
12276
12277
12278
12279
12280
12281
12282
12283
12284
12285
12286
12287
12288
12289
12290
12291
12292
12293
12294
12295
12296
12297
12298
12299
12300
12301
12302
12303
12304
12305
12306
12307
12308
12309
12310
12311
12312
12313
12314
12315
12316
12317
12318
12319
12320
12321
12322
12323
12324
12325
12326
12327
12328
12329
12330
12331
12332
12333
12334
12335
12336
12337
12338
12339
12340
12341
12342
12343
12344
12345
12346
12347
12348
12349
12350
12351
12352
12353
12354
12355
12356
12357
12358
12359
12360
12361
12362
12363
12364
12365
12366
12367
12368
12369
12370
12371
12372
12373
12374
12375
12376
12377
12378
12379
12380
12381
12382
12383
12384
12385
12386
12387
12388
12389
12390
12391
12392
12393
12394
12395
12396
12397
12398
12399
12400
12401
12402
12403
12404
12405
12406
12407
12408
12409
12410
12411
12412
12413
12414
12415
12416
12417
12418
12419
12420
12421
12422
12423
12424
12425
12426
12427
12428
12429
12430
12431
12432
12433
12434
12435
12436
12437
12438
12439
12440
12441
12442
12443
12444
12445
12446
12447
12448
12449
12450
12451
12452
12453
12454
12455
12456
12457
12458
12459
12460
12461
12462
12463
12464
12465
12466
12467
12468
12469
12470
12471
12472
12473
12474
12475
12476
12477
12478
12479
12480
12481
12482
12483
12484
12485
12486
12487
12488
12489
12490
12491
12492
12493
12494
12495
12496
12497
12498
12499
12500
12501
12502
12503
12504
12505
12506
12507
12508
12509
12510
12511
12512
12513
12514
12515
12516
12517
12518
12519
12520
12521
12522
12523
12524
12525
12526
12527
12528
12529
12530
12531
12532
12533
12534
12535
12536
12537
12538
12539
12540
12541
12542
12543
12544
12545
12546
12547
12548
12549
12550
12551
12552
12553
12554
12555
12556
12557
12558
12559
12560
12561
12562
12563
12564
12565
12566
12567
12568
12569
12570
12571
12572
12573
12574
12575
12576
12577
12578
12579
12580
12581
12582
12583
12584
12585
12586
12587
12588
12589
12590
12591
12592
12593
12594
12595
12596
12597
12598
12599
12600
12601
12602
12603
12604
12605
12606
12607
12608
12609
12610
12611
12612
12613
12614
12615
12616
12617
12618
12619
12620
12621
12622
12623
12624
12625
12626
12627
12628
12629
12630
12631
12632
12633
12634
12635
12636
12637
12638
12639
12640
12641
12642
12643
12644
12645
12646
12647
12648
12649
12650
12651
12652
12653
12654
12655
12656
12657
12658
12659
12660
12661
12662
12663
12664
12665
12666
12667
12668
12669
12670
12671
12672
12673
12674
12675
12676
12677
12678
12679
12680
12681
12682
12683
12684
12685
12686
12687
12688
12689
12690
12691
12692
12693
12694
12695
12696
12697
12698
12699
12700
12701
12702
12703
12704
12705
12706
12707
12708
12709
12710
12711
12712
12713
12714
12715
12716
12717
12718
12719
12720
12721
12722
12723
12724
12725
12726
12727
12728
12729
12730
12731
12732
12733
12734
12735
12736
12737
12738
12739
12740
12741
12742
12743
12744
12745
12746
12747
12748
12749
12750
12751
12752
12753
12754
12755
12756
12757
12758
12759
12760
12761
12762
12763
12764
12765
12766
12767
12768
12769
12770
12771
12772
12773
12774
12775
12776
12777
12778
12779
12780
12781
12782
12783
12784
12785
12786
12787
12788
12789
12790
12791
12792
12793
12794
12795
12796
12797
12798
12799
12800
12801
12802
12803
12804
12805
12806
12807
12808
12809
12810
12811
12812
12813
12814
12815
12816
12817
12818
12819
12820
12821
12822
12823
12824
12825
12826
12827
12828
12829
12830
12831
12832
12833
12834
12835
12836
12837
12838
12839
12840
12841
12842
12843
12844
12845
12846
12847
12848
12849
12850
12851
12852
12853
12854
12855
12856
12857
12858
12859
12860
12861
12862
12863
12864
12865
12866
12867
12868
12869
12870
12871
12872
12873
12874
12875
12876
12877
12878
12879
12880
12881
12882
12883
12884
12885
12886
12887
12888
12889
12890
12891
12892
12893
12894
12895
12896
12897
12898
12899
12900
12901
12902
12903
12904
12905
12906
12907
12908
12909
12910
12911
12912
12913
12914
12915
12916
12917
12918
12919
12920
12921
12922
12923
12924
12925
12926
12927
12928
12929
12930
12931
12932
12933
12934
12935
12936
12937
12938
12939
12940
12941
12942
12943
12944
12945
12946
12947
12948
12949
12950
12951
12952
12953
12954
12955
12956
12957
12958
12959
12960
12961
12962
12963
12964
12965
12966
12967
12968
12969
12970
12971
12972
12973
12974
12975
12976
12977
12978
12979
12980
12981
12982
12983
12984
12985
12986
12987
12988
12989
12990
12991
12992
12993
12994
12995
12996
12997
12998
12999
13000
13001
13002
13003
13004
13005
13006
13007
13008
13009
13010
13011
13012
13013
13014
13015
13016
13017
13018
13019
13020
13021
13022
13023
13024
13025
13026
13027
13028
13029
13030
13031
13032
13033
13034
13035
13036
13037
13038
13039
13040
13041
13042
13043
13044
13045
13046
13047
13048
13049
13050
13051
13052
13053
13054
13055
13056
13057
13058
13059
13060
13061
13062
13063
13064
13065
13066
13067
13068
13069
13070
13071
13072
13073
13074
13075
13076
13077
13078
13079
13080
13081
13082
13083
13084
13085
13086
13087
13088
13089
13090
13091
13092
13093
13094
13095
13096
13097
13098
13099
13100
13101
13102
13103
13104
13105
13106
13107
13108
13109
13110
13111
13112
13113
13114
13115
13116
13117
13118
13119
13120
13121
13122
13123
13124
13125
13126
13127
13128
13129
13130
13131
13132
13133
13134
13135
13136
13137
13138
13139
13140
13141
13142
13143
13144
13145
13146
13147
13148
13149
13150
13151
13152
13153
13154
13155
13156
13157
13158
13159
13160
13161
13162
13163
13164
13165
13166
13167
13168
13169
13170
13171
13172
13173
13174
13175
13176
13177
13178
13179
13180
13181
13182
13183
13184
13185
13186
13187
13188
13189
13190
13191
13192
13193
13194
13195
13196
13197
13198
13199
13200
13201
13202
13203
13204
13205
13206
13207
13208
13209
13210
13211
13212
13213
13214
13215
13216
13217
13218
13219
13220
13221
13222
13223
13224
13225
13226
13227
13228
13229
13230
13231
13232
13233
13234
13235
13236
13237
13238
13239
13240
13241
13242
13243
13244
13245
13246
13247
13248
13249
13250
13251
13252
13253
13254
13255
13256
13257
13258
13259
13260
13261
13262
13263
13264
13265
13266
13267
13268
13269
13270
13271
13272
13273
13274
13275
13276
13277
13278
13279
13280
13281
13282
13283
13284
13285
13286
13287
13288
13289
13290
13291
13292
13293
13294
13295
13296
13297
13298
13299
13300
13301
13302
13303
13304
13305
13306
13307
13308
13309
13310
13311
13312
13313
13314
13315
13316
13317
13318
13319
13320
13321
13322
13323
13324
13325
13326
13327
13328
13329
13330
13331
13332
13333
13334
13335
13336
13337
13338
13339
13340
13341
13342
13343
13344
13345
13346
13347
13348
13349
13350
13351
13352
13353
13354
13355
13356
13357
13358
13359
13360
13361
13362
13363
13364
13365
13366
13367
13368
13369
13370
13371
13372
13373
13374
13375
13376
13377
13378
13379
13380
13381
13382
13383
13384
13385
13386
13387
13388
13389
13390
13391
13392
13393
13394
13395
13396
13397
13398
13399
13400
13401
13402
13403
13404
13405
13406
13407
13408
13409
13410
13411
13412
13413
13414
13415
13416
13417
13418
13419
13420
13421
13422
13423
13424
13425
13426
13427
13428
13429
13430
13431
13432
13433
13434
13435
13436
13437
13438
13439
13440
13441
13442
13443
13444
13445
13446
13447
13448
13449
13450
13451
13452
13453
13454
13455
13456
13457
13458
13459
13460
13461
13462
13463
13464
13465
13466
13467
13468
13469
13470
13471
13472
13473
13474
13475
13476
13477
13478
13479
13480
13481
13482
13483
13484
13485
13486
13487
13488
13489
13490
13491
13492
13493
13494
13495
13496
13497
13498
13499
13500
13501
13502
13503
13504
13505
13506
13507
13508
13509
13510
13511
13512
13513
13514
13515
13516
13517
13518
13519
13520
13521
13522
13523
13524
13525
13526
13527
13528
13529
13530
13531
13532
13533
13534
13535
13536
13537
13538
13539
13540
13541
13542
13543
13544
13545
13546
13547
13548
13549
13550
13551
13552
13553
13554
13555
13556
13557
13558
13559
13560
13561
13562
13563
13564
13565
13566
13567
13568
13569
13570
13571
13572
13573
13574
13575
13576
13577
13578
13579
13580
13581
13582
13583
13584
13585
13586
13587
13588
13589
13590
13591
13592
13593
13594
13595
13596
13597
13598
13599
13600
13601
13602
13603
13604
13605
13606
13607
13608
13609
13610
13611
13612
13613
13614
13615
13616
13617
13618
13619
13620
13621
13622
13623
13624
13625
13626
13627
13628
13629
13630
13631
13632
13633
13634
13635
13636
13637
13638
13639
13640
13641
13642
13643
13644
13645
13646
13647
13648
13649
13650
13651
13652
13653
13654
13655
13656
13657
13658
13659
13660
13661
13662
13663
13664
13665
13666
13667
13668
13669
13670
13671
13672
13673
13674
13675
13676
13677
13678
13679
13680
13681
13682
13683
13684
13685
13686
13687
13688
13689
13690
13691
13692
13693
13694
13695
13696
13697
13698
13699
13700
13701
13702
13703
13704
13705
13706
13707
13708
13709
13710
13711
13712
13713
13714
13715
13716
13717
13718
13719
13720
13721
13722
13723
13724
13725
13726
13727
13728
13729
13730
13731
13732
13733
13734
13735
13736
13737
13738
13739
13740
13741
13742
13743
13744
13745
13746
13747
13748
13749
13750
13751
13752
13753
13754
13755
13756
13757
13758
13759
13760
13761
13762
13763
13764
13765
13766
13767
13768
13769
13770
13771
13772
13773
13774
13775
13776
13777
13778
13779
13780
13781
13782
13783
13784
13785
13786
13787
13788
13789
13790
13791
13792
13793
13794
13795
13796
13797
13798
13799
13800
13801
13802
13803
13804
13805
13806
13807
13808
13809
13810
13811
13812
13813
13814
13815
13816
13817
13818
13819
13820
13821
13822
13823
13824
13825
13826
13827
13828
13829
13830
13831
13832
13833
13834
13835
13836
13837
13838
13839
13840
13841
13842
13843
13844
13845
13846
13847
13848
13849
13850
13851
13852
13853
13854
13855
13856
13857
13858
13859
13860
13861
13862
13863
13864
13865
13866
13867
13868
13869
13870
13871
13872
13873
13874
13875
13876
13877
13878
13879
13880
13881
13882
13883
13884
13885
13886
13887
13888
13889
13890
13891
13892
13893
13894
13895
13896
13897
13898
13899
13900
13901
13902
13903
13904
13905
13906
13907
13908
13909
13910
13911
13912
13913
13914
13915
13916
13917
13918
13919
13920
13921
13922
13923
13924
13925
13926
13927
13928
13929
13930
13931
13932
13933
13934
13935
13936
13937
13938
13939
13940
13941
13942
13943
13944
13945
13946
13947
13948
13949
13950
13951
13952
13953
13954
13955
13956
13957
13958
13959
13960
13961
13962
13963
13964
13965
13966
13967
13968
13969
13970
13971
13972
13973
13974
13975
13976
13977
13978
13979
13980
13981
13982
13983
13984
13985
13986
13987
13988
13989
13990
13991
13992
13993
13994
13995
13996
13997
13998
13999
14000
14001
14002
14003
14004
14005
14006
14007
14008
14009
14010
14011
14012
14013
14014
14015
14016
14017
14018
14019
14020
14021
14022
14023
14024
14025
14026
14027
14028
14029
14030
14031
14032
14033
14034
14035
14036
14037
14038
14039
14040
14041
14042
14043
14044
14045
14046
14047
14048
14049
14050
14051
14052
14053
14054
14055
14056
14057
14058
14059
14060
14061
14062
14063
14064
14065
14066
14067
14068
14069
14070
14071
14072
14073
14074
14075
14076
14077
14078
14079
14080
14081
14082
14083
14084
14085
14086
14087
14088
14089
14090
14091
14092
14093
14094
14095
14096
14097
14098
14099
14100
14101
14102
14103
14104
14105
14106
14107
14108
14109
14110
14111
14112
14113
14114
14115
14116
14117
14118
14119
14120
14121
14122
14123
14124
14125
14126
14127
14128
14129
14130
14131
14132
14133
14134
14135
14136
14137
14138
14139
14140
14141
14142
14143
14144
14145
14146
14147
14148
14149
14150
14151
14152
14153
14154
14155
14156
14157
14158
14159
14160
14161
14162
14163
14164
14165
14166
14167
14168
14169
14170
14171
14172
14173
14174
14175
14176
14177
14178
14179
14180
14181
14182
14183
14184
14185
14186
14187
14188
14189
14190
14191
14192
14193
14194
14195
14196
14197
14198
14199
14200
14201
14202
14203
14204
14205
14206
14207
14208
14209
14210
14211
14212
14213
14214
14215
14216
14217
14218
14219
14220
14221
14222
14223
14224
14225
14226
14227
14228
14229
14230
14231
14232
14233
14234
14235
14236
14237
14238
14239
14240
14241
14242
14243
14244
14245
14246
14247
14248
14249
14250
14251
14252
14253
14254
14255
14256
14257
14258
14259
14260
14261
14262
14263
14264
14265
14266
14267
14268
14269
14270
14271
14272
14273
14274
14275
14276
14277
14278
14279
14280
14281
14282
14283
14284
14285
14286
14287
14288
14289
14290
14291
14292
14293
14294
14295
14296
14297
14298
14299
14300
14301
14302
14303
14304
14305
14306
14307
14308
14309
14310
14311
14312
14313
14314
14315
14316
14317
14318
14319
14320
14321
14322
14323
14324
14325
14326
14327
14328
14329
14330
14331
14332
14333
14334
14335
14336
14337
14338
14339
14340
14341
14342
14343
14344
14345
14346
14347
14348
14349
14350
14351
14352
14353
14354
14355
14356
14357
14358
14359
14360
14361
14362
14363
14364
14365
14366
14367
14368
14369
14370
14371
14372
14373
14374
14375
14376
14377
14378
14379
14380
14381
14382
14383
14384
14385
14386
14387
14388
14389
14390
14391
14392
14393
14394
14395
14396
14397
14398
14399
14400
14401
14402
14403
14404
14405
14406
14407
14408
14409
14410
14411
14412
14413
14414
14415
14416
14417
14418
14419
14420
14421
14422
14423
14424
14425
14426
14427
14428
14429
14430
14431
14432
14433
14434
14435
14436
14437
14438
14439
14440
14441
14442
14443
14444
14445
14446
14447
14448
14449
14450
14451
14452
14453
14454
14455
14456
14457
14458
14459
14460
14461
14462
14463
14464
14465
14466
14467
14468
14469
14470
14471
14472
14473
14474
14475
14476
14477
14478
14479
14480
14481
14482
14483
14484
14485
14486
14487
14488
14489
14490
14491
14492
14493
14494
14495
14496
14497
14498
14499
14500
14501
14502
14503
14504
14505
14506
14507
14508
14509
14510
14511
14512
14513
14514
14515
14516
14517
14518
14519
14520
14521
14522
14523
14524
14525
14526
14527
14528
14529
14530
14531
14532
14533
14534
14535
14536
14537
14538
14539
14540
14541
14542
14543
14544
14545
14546
14547
14548
14549
14550
14551
14552
14553
14554
14555
14556
14557
14558
14559
14560
14561
14562
14563
14564
14565
14566
14567
14568
14569
14570
14571
14572
14573
14574
14575
14576
14577
14578
14579
14580
14581
14582
14583
14584
14585
14586
14587
14588
14589
14590
14591
14592
14593
14594
14595
14596
14597
14598
14599
14600
14601
14602
14603
14604
14605
14606
14607
14608
14609
14610
14611
14612
14613
14614
14615
14616
14617
14618
14619
14620
14621
14622
14623
14624
14625
14626
14627
14628
14629
14630
14631
14632
14633
14634
14635
14636
14637
14638
14639
14640
14641
14642
14643
14644
14645
14646
14647
14648
14649
14650
14651
14652
14653
14654
14655
14656
14657
14658
14659
14660
14661
14662
14663
14664
14665
14666
14667
14668
14669
14670
14671
14672
14673
14674
14675
14676
14677
14678
14679
14680
14681
14682
14683
14684
14685
14686
14687
14688
14689
14690
14691
14692
14693
14694
14695
14696
14697
14698
14699
14700
14701
14702
14703
14704
14705
14706
14707
14708
14709
14710
14711
14712
14713
14714
14715
14716
14717
14718
14719
14720
14721
14722
14723
14724
14725
14726
14727
14728
14729
14730
14731
14732
14733
14734
14735
14736
14737
14738
14739
14740
14741
14742
14743
14744
14745
14746
14747
14748
14749
14750
14751
14752
14753
14754
14755
14756
14757
14758
14759
14760
14761
14762
14763
14764
14765
14766
14767
14768
14769
14770
14771
14772
14773
14774
14775
14776
14777
14778
14779
14780
14781
14782
14783
14784
14785
14786
14787
14788
14789
14790
14791
14792
14793
14794
14795
14796
14797
14798
14799
14800
14801
14802
14803
14804
14805
14806
14807
14808
14809
14810
14811
14812
14813
14814
14815
14816
14817
14818
14819
14820
14821
14822
14823
14824
14825
14826
14827
14828
14829
14830
14831
14832
14833
14834
14835
14836
14837
14838
14839
14840
14841
14842
14843
14844
14845
14846
14847
14848
14849
14850
14851
14852
14853
14854
14855
14856
14857
14858
14859
14860
14861
14862
14863
14864
14865
14866
14867
14868
14869
14870
14871
14872
14873
14874
14875
14876
14877
14878
14879
14880
14881
14882
14883
14884
14885
14886
14887
14888
14889
14890
14891
14892
14893
14894
14895
14896
14897
14898
14899
14900
14901
14902
14903
14904
14905
14906
14907
14908
14909
14910
14911
14912
14913
14914
14915
14916
14917
14918
14919
14920
14921
14922
14923
14924
14925
14926
14927
14928
14929
14930
14931
14932
14933
14934
14935
14936
14937
14938
14939
14940
14941
14942
14943
14944
14945
14946
14947
14948
14949
14950
14951
14952
14953
14954
14955
14956
14957
14958
14959
14960
14961
14962
14963
14964
14965
14966
14967
14968
14969
14970
14971
14972
14973
14974
14975
14976
14977
14978
14979
14980
14981
14982
14983
14984
14985
14986
14987
14988
14989
14990
14991
14992
14993
14994
14995
14996
14997
14998
14999
15000
15001
15002
15003
15004
15005
15006
15007
15008
15009
15010
15011
15012
15013
15014
15015
15016
15017
15018
15019
15020
15021
15022
15023
15024
15025
15026
15027
15028
15029
15030
15031
15032
15033
15034
15035
15036
15037
15038
15039
15040
15041
15042
15043
15044
15045
15046
15047
15048
15049
15050
15051
15052
15053
15054
15055
15056
15057
15058
15059
15060
15061
15062
15063
15064
15065
15066
15067
15068
15069
15070
15071
15072
15073
15074
15075
15076
15077
15078
15079
15080
15081
15082
15083
15084
15085
15086
15087
15088
15089
15090
15091
15092
15093
15094
15095
15096
15097
15098
15099
15100
15101
15102
15103
15104
15105
15106
15107
15108
15109
15110
15111
15112
15113
15114
15115
15116
15117
15118
15119
15120
15121
15122
15123
15124
15125
15126
15127
15128
15129
15130
15131
15132
15133
15134
15135
15136
15137
15138
15139
15140
15141
15142
15143
15144
15145
15146
15147
15148
15149
15150
15151
15152
15153
15154
15155
15156
15157
15158
15159
15160
15161
15162
15163
15164
15165
15166
15167
15168
15169
15170
15171
15172
15173
15174
15175
15176
15177
15178
15179
15180
15181
15182
15183
15184
15185
15186
15187
15188
15189
15190
15191
15192
15193
15194
15195
15196
15197
15198
15199
15200
15201
15202
15203
15204
15205
15206
15207
15208
15209
15210
15211
15212
15213
15214
15215
15216
15217
15218
15219
15220
15221
15222
15223
15224
15225
15226
15227
15228
15229
15230
15231
15232
15233
15234
15235
15236
15237
15238
15239
15240
15241
15242
15243
15244
15245
15246
15247
15248
15249
15250
15251
15252
15253
15254
15255
15256
15257
15258
15259
15260
15261
15262
15263
15264
15265
15266
15267
15268
15269
15270
15271
15272
15273
15274
15275
15276
15277
15278
15279
15280
15281
15282
15283
15284
15285
15286
15287
15288
15289
15290
15291
15292
15293
15294
15295
15296
15297
15298
15299
15300
15301
15302
15303
15304
15305
15306
15307
15308
15309
15310
15311
15312
15313
15314
15315
15316
15317
15318
15319
15320
15321
15322
15323
15324
15325
15326
15327
15328
15329
15330
15331
15332
15333
15334
15335
15336
15337
15338
15339
15340
15341
15342
15343
15344
15345
15346
15347
15348
15349
15350
15351
15352
15353
15354
15355
15356
15357
15358
15359
15360
15361
15362
15363
15364
15365
15366
15367
15368
15369
15370
15371
15372
15373
15374
15375
15376
15377
15378
15379
15380
15381
15382
15383
15384
15385
15386
15387
15388
15389
15390
15391
15392
15393
15394
15395
15396
15397
15398
15399
15400
15401
15402
15403
15404
15405
15406
15407
15408
15409
15410
15411
15412
15413
15414
15415
15416
15417
15418
15419
15420
15421
15422
15423
15424
15425
15426
15427
15428
15429
15430
15431
15432
15433
15434
15435
15436
15437
15438
15439
15440
15441
15442
15443
15444
15445
15446
15447
15448
15449
15450
15451
15452
15453
15454
15455
15456
15457
15458
15459
15460
15461
15462
15463
15464
15465
15466
15467
15468
15469
15470
15471
15472
15473
15474
15475
15476
15477
15478
15479
15480
15481
15482
15483
15484
15485
15486
15487
15488
15489
15490
15491
15492
15493
15494
15495
15496
15497
15498
15499
15500
15501
15502
15503
15504
15505
15506
15507
15508
15509
15510
15511
15512
15513
15514
15515
15516
15517
15518
15519
15520
15521
15522
15523
15524
15525
15526
15527
15528
15529
15530
15531
15532
15533
15534
15535
15536
15537
15538
15539
15540
15541
15542
15543
15544
15545
15546
15547
15548
15549
15550
15551
15552
15553
15554
15555
15556
15557
15558
15559
15560
15561
15562
15563
15564
15565
15566
15567
15568
15569
15570
15571
15572
15573
15574
15575
15576
15577
15578
15579
15580
15581
15582
15583
15584
15585
15586
15587
15588
15589
15590
15591
15592
15593
15594
15595
15596
15597
15598
15599
15600
15601
15602
15603
15604
15605
15606
15607
15608
15609
15610
15611
15612
15613
15614
15615
15616
15617
15618
15619
15620
15621
15622
15623
15624
15625
15626
15627
15628
15629
15630
15631
15632
15633
15634
15635
15636
15637
15638
15639
15640
15641
15642
15643
15644
15645
15646
15647
15648
15649
15650
15651
15652
15653
15654
15655
15656
15657
15658
15659
15660
15661
15662
15663
15664
15665
15666
15667
15668
15669
15670
15671
15672
15673
15674
15675
15676
15677
15678
15679
15680
15681
15682
15683
15684
15685
15686
15687
15688
15689
15690
15691
15692
15693
15694
15695
15696
15697
15698
15699
15700
15701
15702
15703
15704
15705
15706
15707
15708
15709
15710
15711
15712
15713
15714
15715
15716
15717
15718
15719
15720
15721
15722
15723
15724
15725
15726
15727
15728
15729
15730
15731
15732
15733
15734
15735
15736
15737
15738
15739
15740
15741
15742
15743
15744
15745
15746
15747
15748
15749
15750
15751
15752
15753
15754
15755
15756
15757
15758
15759
15760
15761
15762
15763
15764
15765
15766
15767
15768
15769
15770
15771
15772
15773
15774
15775
15776
15777
15778
15779
15780
15781
15782
15783
15784
15785
15786
15787
15788
15789
15790
15791
15792
15793
15794
15795
15796
15797
15798
15799
15800
15801
15802
15803
15804
15805
15806
15807
15808
15809
15810
15811
15812
15813
15814
15815
15816
15817
15818
15819
15820
15821
15822
15823
15824
15825
15826
15827
15828
15829
15830
15831
15832
15833
15834
15835
15836
15837
15838
15839
15840
15841
15842
15843
15844
15845
15846
15847
15848
15849
15850
15851
15852
15853
15854
15855
15856
15857
15858
15859
15860
15861
15862
15863
15864
15865
15866
15867
15868
15869
15870
15871
15872
15873
15874
15875
15876
15877
15878
15879
15880
15881
15882
15883
15884
15885
15886
15887
15888
15889
15890
15891
15892
15893
15894
15895
15896
15897
15898
15899
15900
15901
15902
15903
15904
15905
15906
15907
15908
15909
15910
15911
15912
15913
15914
15915
15916
15917
15918
15919
15920
15921
15922
15923
15924
15925
15926
15927
15928
15929
15930
15931
15932
15933
15934
15935
15936
15937
15938
15939
15940
15941
15942
15943
15944
15945
15946
15947
15948
15949
15950
15951
15952
15953
15954
15955
15956
15957
15958
15959
15960
15961
15962
15963
15964
15965
15966
15967
15968
15969
15970
15971
15972
15973
15974
15975
15976
15977
15978
15979
15980
15981
15982
15983
15984
15985
15986
15987
15988
15989
15990
15991
15992
15993
15994
15995
15996
15997
15998
15999
16000
16001
16002
16003
16004
16005
16006
16007
16008
16009
16010
16011
16012
16013
16014
16015
16016
16017
16018
16019
16020
16021
16022
16023
16024
16025
16026
16027
16028
16029
16030
16031
16032
16033
16034
16035
16036
16037
16038
16039
16040
16041
16042
16043
16044
16045
16046
16047
16048
16049
16050
16051
16052
16053
16054
16055
16056
16057
16058
16059
16060
16061
16062
16063
16064
16065
16066
16067
16068
16069
16070
16071
16072
16073
16074
16075
16076
16077
16078
16079
16080
16081
16082
16083
16084
16085
16086
16087
16088
16089
16090
16091
16092
16093
16094
16095
16096
16097
16098
16099
16100
16101
16102
16103
16104
16105
16106
16107
16108
16109
16110
16111
16112
16113
16114
16115
16116
16117
16118
16119
16120
16121
16122
16123
16124
16125
16126
16127
16128
16129
16130
16131
16132
16133
16134
16135
16136
16137
16138
16139
16140
16141
16142
16143
16144
16145
16146
16147
16148
16149
16150
16151
16152
16153
16154
16155
16156
16157
16158
16159
16160
16161
16162
16163
16164
16165
16166
16167
16168
16169
16170
16171
16172
16173
16174
16175
16176
16177
16178
16179
16180
16181
16182
16183
16184
16185
16186
16187
16188
16189
16190
16191
16192
16193
16194
16195
16196
16197
16198
16199
16200
16201
16202
16203
16204
16205
16206
16207
16208
16209
16210
16211
16212
16213
16214
16215
16216
16217
16218
16219
16220
16221
16222
16223
16224
16225
16226
16227
16228
16229
16230
16231
16232
16233
16234
16235
16236
16237
16238
16239
16240
16241
16242
16243
16244
16245
16246
16247
16248
16249
16250
16251
16252
16253
16254
16255
16256
16257
16258
16259
16260
16261
16262
16263
16264
16265
16266
16267
16268
16269
16270
16271
16272
16273
16274
16275
16276
16277
16278
16279
16280
16281
16282
16283
16284
16285
16286
16287
16288
16289
16290
16291
16292
16293
16294
16295
16296
16297
16298
16299
16300
16301
16302
16303
16304
16305
16306
16307
16308
16309
16310
16311
16312
16313
16314
16315
16316
16317
16318
16319
16320
16321
16322
16323
16324
16325
16326
16327
16328
16329
16330
16331
16332
16333
16334
16335
16336
16337
16338
16339
16340
16341
16342
16343
16344
16345
16346
16347
16348
16349
16350
16351
16352
16353
16354
16355
16356
16357
16358
16359
16360
16361
16362
16363
16364
16365
16366
16367
16368
16369
16370
16371
16372
16373
16374
16375
16376
16377
16378
16379
16380
16381
16382
16383
16384
16385
16386
16387
16388
16389
16390
16391
16392
16393
16394
16395
16396
16397
16398
16399
16400
16401
16402
16403
16404
16405
16406
16407
16408
16409
16410
16411
16412
16413
16414
16415
16416
16417
16418
16419
16420
16421
16422
16423
16424
16425
16426
16427
16428
16429
16430
16431
16432
16433
16434
16435
16436
16437
16438
16439
16440
16441
16442
16443
16444
16445
16446
16447
16448
16449
16450
16451
16452
16453
16454
16455
16456
16457
16458
16459
16460
16461
16462
16463
16464
16465
16466
16467
16468
16469
16470
16471
16472
16473
16474
16475
16476
16477
16478
16479
16480
16481
16482
16483
16484
16485
16486
16487
16488
16489
16490
16491
16492
16493
16494
16495
16496
16497
16498
16499
16500
16501
16502
16503
16504
16505
16506
16507
16508
16509
16510
16511
16512
16513
16514
16515
16516
16517
16518
16519
16520
16521
16522
16523
16524
16525
16526
16527
16528
16529
16530
16531
16532
16533
16534
16535
16536
16537
16538
16539
16540
16541
16542
16543
16544
16545
16546
16547
16548
16549
16550
16551
16552
16553
16554
16555
16556
16557
16558
16559
16560
16561
16562
16563
16564
16565
16566
16567
16568
16569
16570
16571
16572
16573
16574
16575
16576
16577
16578
16579
16580
16581
16582
16583
16584
16585
16586
16587
16588
16589
16590
16591
16592
16593
16594
16595
16596
16597
16598
16599
16600
16601
16602
16603
16604
16605
16606
16607
16608
16609
16610
16611
16612
16613
16614
16615
16616
16617
16618
16619
16620
16621
16622
16623
16624
16625
16626
16627
16628
16629
16630
16631
16632
16633
16634
16635
16636
16637
16638
16639
16640
16641
16642
16643
16644
16645
16646
16647
16648
16649
16650
16651
16652
16653
16654
16655
16656
16657
16658
16659
16660
16661
16662
16663
16664
16665
16666
16667
16668
16669
16670
16671
16672
16673
16674
16675
16676
16677
16678
16679
16680
16681
16682
16683
16684
16685
16686
16687
16688
16689
16690
16691
16692
16693
16694
16695
16696
16697
16698
16699
16700
16701
16702
16703
16704
16705
16706
16707
16708
16709
16710
16711
16712
16713
16714
16715
16716
16717
16718
16719
16720
16721
16722
16723
16724
16725
16726
16727
16728
16729
16730
16731
16732
16733
16734
16735
16736
16737
16738
16739
16740
16741
16742
16743
16744
16745
16746
16747
16748
16749
16750
16751
16752
16753
16754
16755
16756
16757
16758
16759
16760
16761
16762
16763
16764
16765
16766
16767
16768
16769
16770
16771
16772
16773
16774
16775
16776
16777
16778
16779
16780
16781
16782
16783
16784
16785
16786
16787
16788
16789
16790
16791
16792
16793
16794
16795
16796
16797
16798
16799
16800
16801
16802
16803
16804
16805
16806
16807
16808
16809
16810
16811
16812
16813
16814
16815
16816
16817
16818
16819
16820
16821
16822
16823
16824
16825
16826
16827
16828
16829
16830
16831
16832
16833
16834
16835
16836
16837
16838
16839
16840
16841
16842
16843
16844
16845
16846
16847
16848
16849
16850
16851
16852
16853
16854
16855
16856
16857
16858
16859
16860
16861
16862
16863
16864
16865
16866
16867
16868
16869
16870
16871
16872
16873
16874
16875
16876
16877
16878
16879
16880
16881
16882
16883
16884
16885
16886
16887
16888
16889
16890
16891
16892
16893
16894
16895
16896
16897
16898
16899
16900
16901
16902
16903
16904
16905
16906
16907
16908
16909
16910
16911
16912
16913
16914
16915
16916
16917
16918
16919
16920
16921
16922
16923
16924
16925
16926
16927
16928
16929
16930
16931
16932
16933
16934
16935
16936
16937
16938
16939
16940
16941
16942
16943
16944
16945
16946
16947
16948
16949
16950
16951
16952
16953
16954
16955
16956
16957
16958
16959
16960
16961
16962
16963
16964
16965
16966
16967
16968
16969
16970
16971
16972
16973
16974
16975
16976
16977
16978
16979
16980
16981
16982
16983
16984
16985
16986
16987
16988
16989
16990
16991
16992
16993
16994
16995
16996
16997
16998
16999
17000
17001
17002
17003
17004
17005
17006
17007
17008
17009
17010
17011
17012
17013
17014
17015
17016
17017
17018
17019
17020
17021
17022
17023
17024
17025
17026
17027
17028
17029
17030
17031
17032
17033
17034
17035
17036
17037
17038
17039
17040
17041
17042
17043
17044
17045
17046
17047
17048
17049
17050
17051
17052
17053
17054
17055
17056
17057
17058
17059
17060
17061
17062
17063
17064
17065
17066
17067
17068
17069
17070
17071
17072
17073
17074
17075
17076
17077
17078
17079
17080
17081
17082
17083
17084
17085
17086
17087
17088
17089
17090
17091
17092
17093
17094
17095
17096
17097
17098
17099
17100
17101
17102
17103
17104
17105
17106
17107
17108
17109
17110
17111
17112
17113
17114
17115
17116
17117
17118
17119
17120
17121
17122
17123
17124
17125
17126
17127
17128
17129
17130
17131
17132
17133
17134
17135
17136
17137
17138
17139
17140
17141
17142
17143
17144
17145
17146
17147
17148
17149
17150
17151
17152
17153
17154
17155
17156
17157
17158
17159
17160
17161
17162
17163
17164
17165
17166
17167
17168
17169
17170
17171
17172
17173
17174
17175
17176
17177
17178
17179
17180
17181
17182
17183
17184
17185
17186
17187
17188
17189
17190
17191
17192
17193
17194
17195
17196
17197
17198
17199
17200
17201
17202
17203
17204
17205
17206
17207
17208
17209
17210
17211
17212
17213
17214
17215
17216
17217
17218
17219
17220
17221
17222
17223
17224
17225
17226
17227
17228
17229
17230
17231
17232
17233
17234
17235
17236
17237
17238
17239
17240
17241
17242
17243
17244
17245
17246
17247
17248
17249
17250
17251
17252
17253
17254
17255
17256
17257
17258
17259
17260
17261
17262
17263
17264
17265
17266
17267
17268
17269
17270
17271
17272
17273
17274
17275
17276
17277
17278
17279
17280
17281
17282
17283
17284
17285
17286
17287
17288
17289
17290
17291
17292
17293
17294
17295
17296
17297
17298
17299
17300
17301
17302
17303
17304
17305
17306
17307
17308
17309
17310
17311
17312
17313
17314
17315
17316
17317
17318
17319
17320
17321
17322
17323
17324
17325
17326
17327
17328
17329
17330
17331
17332
17333
17334
17335
17336
17337
17338
17339
17340
17341
17342
17343
17344
17345
17346
17347
17348
17349
17350
17351
17352
17353
17354
17355
17356
17357
17358
17359
17360
17361
17362
17363
17364
17365
17366
17367
17368
17369
17370
17371
17372
17373
17374
17375
17376
17377
17378
17379
17380
17381
17382
17383
17384
17385
17386
17387
17388
17389
17390
17391
17392
17393
17394
17395
17396
17397
17398
17399
17400
17401
17402
17403
17404
17405
17406
17407
17408
17409
17410
17411
17412
17413
17414
17415
17416
17417
17418
17419
17420
17421
17422
17423
17424
17425
17426
17427
17428
17429
17430
17431
17432
17433
17434
17435
17436
17437
17438
17439
17440
17441
17442
17443
17444
17445
17446
17447
17448
17449
17450
17451
17452
17453
17454
17455
17456
17457
17458
17459
17460
17461
17462
17463
17464
17465
17466
17467
17468
17469
17470
17471
17472
17473
17474
17475
17476
17477
17478
17479
17480
17481
17482
17483
17484
17485
17486
17487
17488
17489
17490
17491
17492
17493
17494
17495
17496
17497
17498
17499
17500
17501
17502
17503
17504
17505
17506
17507
17508
17509
17510
17511
17512
17513
17514
17515
17516
17517
17518
17519
17520
17521
17522
17523
17524
17525
17526
17527
17528
17529
17530
17531
17532
17533
17534
17535
17536
17537
17538
17539
17540
17541
17542
17543
17544
17545
17546
17547
17548
17549
17550
17551
17552
17553
17554
17555
17556
17557
17558
17559
17560
17561
17562
17563
17564
17565
17566
17567
17568
17569
17570
17571
17572
17573
17574
17575
17576
17577
17578
17579
17580
17581
17582
17583
17584
17585
17586
17587
17588
17589
17590
17591
17592
17593
17594
17595
17596
17597
17598
17599
17600
17601
17602
17603
17604
17605
17606
17607
17608
17609
17610
17611
17612
17613
17614
17615
17616
17617
17618
17619
17620
17621
17622
17623
17624
17625
17626
17627
17628
17629
17630
17631
17632
17633
17634
17635
17636
17637
17638
17639
17640
17641
17642
17643
17644
17645
17646
17647
17648
17649
17650
17651
17652
17653
17654
17655
17656
17657
17658
17659
17660
17661
17662
17663
17664
17665
17666
17667
17668
17669
17670
17671
17672
17673
17674
17675
17676
17677
17678
17679
17680
17681
17682
17683
17684
17685
17686
17687
17688
17689
17690
17691
17692
17693
17694
17695
17696
17697
17698
17699
17700
17701
17702
17703
17704
17705
17706
17707
17708
17709
17710
17711
17712
17713
17714
17715
17716
17717
17718
17719
17720
17721
17722
17723
17724
17725
17726
17727
17728
17729
17730
17731
17732
17733
17734
17735
17736
17737
17738
17739
17740
17741
17742
17743
17744
17745
17746
17747
17748
17749
17750
17751
17752
17753
17754
17755
17756
17757
17758
17759
17760
17761
17762
17763
17764
17765
17766
17767
17768
17769
17770
17771
17772
17773
17774
17775
17776
17777
17778
17779
17780
17781
17782
17783
17784
17785
17786
17787
17788
17789
17790
17791
17792
17793
17794
17795
17796
17797
17798
17799
17800
17801
17802
17803
17804
17805
17806
17807
17808
17809
17810
17811
17812
17813
17814
17815
17816
17817
17818
17819
17820
17821
17822
17823
17824
17825
17826
17827
17828
17829
17830
17831
17832
17833
17834
17835
17836
17837
17838
17839
17840
17841
17842
17843
17844
17845
17846
17847
17848
17849
17850
17851
17852
17853
17854
17855
17856
17857
17858
17859
17860
17861
17862
17863
17864
17865
17866
17867
17868
17869
17870
17871
17872
17873
17874
17875
17876
17877
17878
17879
17880
17881
17882
17883
17884
17885
17886
17887
17888
17889
17890
17891
17892
17893
17894
17895
17896
17897
17898
17899
17900
17901
17902
17903
17904
17905
17906
17907
17908
17909
17910
17911
17912
17913
17914
17915
17916
17917
17918
17919
17920
17921
17922
17923
17924
17925
17926
17927
17928
17929
17930
17931
17932
17933
17934
17935
17936
17937
17938
17939
17940
17941
17942
17943
17944
17945
17946
17947
17948
17949
17950
17951
17952
17953
17954
17955
17956
17957
17958
17959
17960
17961
17962
17963
17964
17965
17966
17967
17968
17969
17970
17971
17972
17973
17974
17975
17976
17977
17978
17979
17980
17981
17982
17983
17984
17985
17986
17987
17988
17989
17990
17991
17992
17993
17994
17995
17996
17997
17998
17999
18000
18001
18002
18003
18004
18005
18006
18007
18008
18009
18010
18011
18012
18013
18014
18015
18016
18017
18018
18019
18020
18021
18022
18023
18024
18025
18026
18027
18028
18029
18030
18031
18032
18033
18034
18035
18036
18037
18038
18039
18040
18041
18042
18043
18044
18045
18046
18047
18048
18049
18050
18051
18052
18053
18054
18055
18056
18057
18058
18059
18060
18061
18062
18063
18064
18065
18066
18067
18068
18069
18070
18071
18072
18073
18074
18075
18076
18077
18078
18079
18080
18081
18082
18083
18084
18085
18086
18087
18088
18089
18090
18091
18092
18093
18094
18095
18096
18097
18098
18099
18100
18101
18102
18103
18104
18105
18106
18107
18108
18109
18110
18111
18112
18113
18114
18115
18116
18117
18118
18119
18120
18121
18122
18123
18124
18125
18126
18127
18128
18129
18130
18131
18132
18133
18134
18135
18136
18137
18138
18139
18140
18141
18142
18143
18144
18145
18146
18147
18148
18149
18150
18151
18152
18153
18154
18155
18156
18157
18158
18159
18160
18161
18162
18163
18164
18165
18166
18167
18168
18169
18170
18171
18172
18173
18174
18175
18176
18177
18178
18179
18180
18181
18182
18183
18184
18185
18186
18187
18188
18189
18190
18191
18192
18193
18194
18195
18196
18197
18198
18199
18200
18201
18202
18203
18204
18205
18206
18207
18208
18209
18210
18211
18212
18213
18214
18215
18216
18217
18218
18219
18220
18221
18222
18223
18224
18225
18226
18227
18228
18229
18230
18231
18232
18233
18234
18235
18236
18237
18238
18239
18240
18241
18242
18243
18244
18245
18246
18247
18248
18249
18250
18251
18252
18253
18254
18255
18256
18257
18258
18259
18260
18261
18262
18263
18264
18265
18266
18267
18268
18269
18270
18271
18272
18273
18274
18275
18276
18277
18278
18279
18280
18281
18282
18283
18284
18285
18286
18287
18288
18289
18290
18291
18292
18293
18294
18295
18296
18297
18298
18299
18300
18301
18302
18303
18304
18305
18306
18307
18308
18309
18310
18311
18312
18313
18314
18315
18316
18317
18318
18319
18320
18321
18322
18323
18324
18325
18326
18327
18328
18329
18330
18331
18332
18333
18334
18335
18336
18337
18338
18339
18340
18341
18342
18343
18344
18345
18346
18347
18348
18349
18350
18351
18352
18353
18354
18355
18356
18357
18358
18359
18360
18361
18362
18363
18364
18365
18366
18367
18368
18369
18370
18371
18372
18373
18374
18375
18376
18377
18378
18379
18380
18381
18382
18383
18384
18385
18386
18387
18388
18389
18390
18391
18392
18393
18394
18395
18396
18397
18398
18399
18400
18401
18402
18403
18404
18405
18406
18407
18408
18409
18410
18411
18412
18413
18414
18415
18416
18417
18418
18419
18420
18421
18422
18423
18424
18425
18426
18427
18428
18429
18430
18431
18432
18433
18434
18435
18436
18437
18438
18439
18440
18441
18442
18443
18444
18445
18446
18447
18448
18449
18450
18451
18452
18453
18454
18455
18456
18457
18458
18459
18460
18461
18462
18463
18464
18465
18466
18467
18468
18469
18470
18471
18472
18473
18474
18475
18476
18477
18478
18479
18480
18481
18482
18483
18484
18485
18486
18487
18488
18489
18490
18491
18492
18493
18494
18495
18496
18497
18498
18499
18500
18501
18502
18503
18504
18505
18506
18507
18508
18509
18510
18511
18512
18513
18514
18515
18516
18517
18518
18519
18520
18521
18522
18523
18524
18525
18526
18527
18528
18529
18530
18531
18532
18533
18534
18535
18536
18537
18538
18539
18540
18541
18542
18543
18544
18545
18546
18547
18548
18549
18550
18551
18552
18553
18554
18555
18556
18557
18558
18559
18560
18561
18562
18563
18564
18565
18566
18567
18568
18569
18570
18571
18572
18573
18574
18575
18576
18577
18578
18579
18580
18581
18582
18583
18584
18585
18586
18587
18588
18589
18590
18591
18592
18593
18594
18595
18596
18597
18598
18599
18600
18601
18602
18603
18604
18605
18606
18607
18608
18609
18610
18611
18612
18613
18614
18615
18616
18617
18618
18619
18620
18621
18622
18623
18624
18625
18626
18627
18628
18629
18630
18631
18632
18633
18634
18635
18636
18637
18638
18639
18640
18641
18642
18643
18644
18645
18646
18647
18648
18649
18650
18651
18652
18653
18654
18655
18656
18657
18658
18659
18660
18661
18662
18663
18664
18665
18666
18667
18668
18669
18670
18671
18672
18673
18674
18675
18676
18677
18678
18679
18680
18681
18682
18683
18684
18685
18686
18687
18688
18689
18690
18691
18692
18693
18694
18695
18696
18697
18698
18699
18700
18701
18702
18703
18704
18705
18706
18707
18708
18709
18710
18711
18712
18713
18714
18715
18716
18717
18718
18719
18720
18721
18722
18723
18724
18725
18726
18727
18728
18729
18730
18731
18732
18733
18734
18735
18736
18737
18738
18739
18740
18741
18742
18743
18744
18745
18746
18747
18748
18749
18750
18751
18752
18753
18754
18755
18756
18757
18758
18759
18760
18761
18762
18763
18764
18765
18766
18767
18768
18769
18770
18771
18772
18773
18774
18775
18776
18777
18778
18779
18780
18781
18782
18783
18784
18785
18786
18787
18788
18789
18790
18791
18792
18793
18794
18795
18796
18797
18798
18799
18800
18801
18802
18803
18804
18805
18806
18807
18808
18809
18810
18811
18812
18813
18814
18815
18816
18817
18818
18819
18820
18821
18822
18823
18824
18825
18826
18827
18828
18829
18830
18831
18832
18833
18834
18835
18836
18837
18838
18839
18840
18841
18842
18843
18844
18845
18846
18847
18848
18849
18850
18851
18852
18853
18854
18855
18856
18857
18858
18859
18860
18861
18862
18863
18864
18865
18866
18867
18868
18869
18870
18871
18872
18873
18874
18875
18876
18877
18878
18879
18880
18881
18882
18883
18884
18885
18886
18887
18888
18889
18890
18891
18892
18893
18894
18895
18896
18897
18898
18899
18900
18901
18902
18903
18904
18905
18906
18907
18908
18909
18910
18911
18912
18913
18914
18915
18916
18917
18918
18919
18920
18921
18922
18923
18924
18925
18926
18927
18928
18929
18930
18931
18932
18933
18934
18935
18936
18937
18938
18939
18940
18941
18942
18943
18944
18945
18946
18947
18948
18949
18950
18951
18952
18953
18954
18955
18956
18957
18958
18959
18960
18961
18962
18963
18964
18965
18966
18967
18968
18969
18970
18971
18972
18973
18974
18975
18976
18977
18978
18979
18980
18981
18982
18983
18984
18985
18986
18987
18988
18989
18990
18991
18992
18993
18994
18995
18996
18997
18998
18999
19000
19001
19002
19003
19004
19005
19006
19007
19008
19009
19010
19011
19012
19013
19014
19015
19016
19017
19018
19019
19020
19021
19022
19023
19024
19025
19026
19027
19028
19029
19030
19031
19032
19033
19034
19035
19036
19037
19038
19039
19040
19041
19042
19043
19044
19045
19046
19047
19048
19049
19050
19051
19052
19053
19054
19055
19056
19057
19058
19059
19060
19061
19062
19063
19064
19065
19066
19067
19068
19069
19070
19071
19072
19073
19074
19075
19076
19077
19078
19079
19080
19081
19082
19083
19084
19085
19086
19087
19088
19089
19090
19091
19092
19093
19094
19095
19096
19097
19098
19099
19100
19101
19102
19103
19104
19105
19106
19107
19108
19109
19110
19111
19112
19113
19114
19115
19116
19117
19118
19119
19120
19121
19122
19123
19124
19125
19126
19127
19128
19129
19130
19131
19132
19133
19134
19135
19136
19137
19138
19139
19140
19141
19142
19143
19144
19145
19146
19147
19148
19149
19150
19151
19152
19153
19154
19155
19156
19157
19158
19159
19160
19161
19162
19163
19164
19165
19166
19167
19168
19169
19170
19171
19172
19173
19174
19175
19176
19177
19178
19179
19180
19181
19182
19183
19184
19185
19186
19187
19188
19189
19190
19191
19192
19193
19194
19195
19196
19197
19198
19199
19200
19201
19202
19203
19204
19205
19206
19207
19208
19209
19210
19211
19212
19213
19214
19215
19216
19217
19218
19219
19220
19221
19222
19223
19224
19225
19226
19227
19228
19229
19230
19231
19232
19233
19234
19235
19236
19237
19238
19239
19240
19241
19242
19243
19244
19245
19246
19247
19248
19249
19250
19251
19252
19253
19254
19255
19256
19257
19258
19259
19260
19261
19262
19263
19264
19265
19266
19267
19268
19269
19270
19271
19272
19273
19274
19275
19276
19277
19278
19279
19280
19281
19282
19283
19284
19285
19286
19287
19288
19289
19290
19291
19292
19293
19294
19295
19296
19297
19298
19299
19300
19301
19302
19303
19304
19305
19306
19307
19308
19309
19310
19311
19312
19313
19314
19315
19316
19317
19318
19319
19320
19321
19322
19323
19324
19325
19326
19327
19328
19329
19330
19331
19332
19333
19334
19335
19336
19337
19338
19339
19340
19341
19342
19343
19344
19345
2004-05-11  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (delete_tree_cfg): Update call to
	free_basic_block_vars.

2004-05-10  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-live.h: Fix typo in #include guard.

2004-05-08  Jeff Sturm  <jsturm@one-point.com>

	* tree-eh.c (lower_catch): Lower catch body in context of
	catch_region.

2004-05-07  Richard Henderson  <rth@redhat.com>

	* tree-eh.c (tree_could_trap_p): Use get_base_address on references.
	
2004-05-07  Diego Novillo  <dnovillo@redhat.com>

	* doc/invoke.texi: Remove documentation for -ftree-copyprop.
	Update documentation for -ftree-pre.

2004-05-06  Richard Henderson  <rth@redhat.com>

	* stmt.c (parse_output_constraint): Don't warn for read-write
	memory operand.
	* gimplify.c (gimplify_asm_expr): Force in-out memory operands
	to minimal lvalues, then expand to non-matching constraints.

2004-05-06  Zack Weinberg  <zack@codesourcery.com>

	* c-decl.c (finish_function): When !targetm.have_ctors_dtors,
	record static constructors and destructors here...
	(c_expand_body_1): ... not here.
	* c-objc-common.c (start_cdtor, finish_cdtor): Collapse
	together into
	(build_cdtor): ...here.  Update to construct a complete tree
	for the function.  No need to call push_scope, pop_scope, or
	clear_last_expr, or set current_function_cannot_inline.
	(c_objc_common_finish_file): Just call build_cdtor for static
	ctors/dtors, then clear the variables.  Do this before calling
	cgraph_finalize_compilation_unit and cgraph_optimize.

2004-05-06  Richard Henderson  <rth@redhat.com>

	* fold-const.c (fold): Don't build COND_EXPR from comparisons for
	boolean and integer result types.  Handle X ^ X for TRUTH_XOR_EXPR.

2004-05-05  Richard Henderson  <rth@redhat.com>

	* tree-nested.c (create_tmp_var_for): Disallow variable sized types.
	(convert_nonlocal_reference): Set val_only false for the base of a
	component or array reference.
	(convert_local_reference): Likewise.

2004-05-05  Richard Henderson  <rth@redhat.com>

	* gimplify.c (create_tmp_var): Disallow variable sized objects.
	(gimplify_modify_expr): Don't memcpy for VA_ARG_EXPR.

2004-05-05  Richard Henderson  <rth@redhat.com>

	* fold-const.c (operand_equal_p): Replace only_const argument with
	flags.  Allow pure functions if OEP_PURE_SAME.
	(fold, nondestructive_fold_binary_to_constant): Use OEP_ONLY_CONST.
	* tree-cfg.c (phi_alternatives_equal): Fix operand_equal_p flag type.
	* tree-ssa-dom.c (avail_expr_eq): Use OEP_PURE_SAME.
	* tree.h (enum operand_equal_flag): New.
	(operand_equal_p): Update argument list.

2004-05-05  Richard Henderson  <rth@redhat.com>

	* tree-ssa-operands.c (get_call_flags): Remove.
	(get_expr_operands): Use call_expr_flags.
	* tree-alias-common.c (call_may_clobber): Likewise.
	(call_may_return): Likewise.

2004-04-05  Andrew Pinski  <pinskia@physics.uc.edu>

	PR c/15062
	* c-typeck.c (build_asm_expr): Mark the output operands
	to an asm addressable, if necessary.

2004-05-05  Steven Bosscher  <stevenb@suse.de>

	* Makefile.in (GTFILES): Remove duplicate basic-block.h.

2004-05-04  Richard Henderson  <rth@redhat.com>

	* gimplify.c (build_addr_expr_with_type): Set TREE_ADDRESSABLE.
	(gimplify_modify_expr): Turn variable-width assignment into memcpy.
	* tree-nested.c (convert_local_reference): Set val_only after default.

2004-05-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (tree_cfg2vcg): Rename from tree_cfg2dot.  Update all
	users.
	Emit flowgraph using VCG syntax.
	* tree-dump.c (dump_files): Rename -fdump-tree-dot to
	-fdump-tree-vcg.
	* tree.h (enum tree_dump_index): Rename TDI_dot to TDI_vcg.
	* doc/invoke.texi: Update documentation to describe
	-fdump-tree-vcg.

2004-05-03  Andrew Pinski  <pinskia@physics.uc.edu>

	* objc/objc-act.c (build_objc_string_object):
	Add the fields to the purpose of the list for
	the constructor.

2004-05-03  Richard Henderson  <rth@redhat.com>

	* c-simplify.c (gimplify_if_stmt): Loop for else-if.

2004-05-03  Andrew Pinski  <pinskia@physics.uc.edu>

	PR optimization/15245
	* tree-ssa-phiopt.c (conditional_replacement): Use fold_convert
	instead of convert.

2004-05-03  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_compound_lval): Gimplify non-constant
	array indices into a temporary variable.

2004-04-30  Richard Henderson  <rth@redhat.com>

	* builtins.c (validate_arglist): Don't reject side effects.
	(simplify_builtin_strcpy): Do reject side effects in length.

2004-04-30  Jeff Law  <law@redhat.com>

	* tree-outof-ssa.c (eliminate_build): Move code which verifies
	that all of a PHI's arguments do not have a partition if the
	result does not have a partition from here to...
	(rewrite_trees): Here.

2004-04-24  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (factored_computed_goto_label,
	factored_computed_goto): Removed.
	(disband_implicit_edges): Unfactor computed gotos without
	using them.

2004-04-23  Per Bothner  <per@bothner.com>

	* expr.c (expr_wfl_stack):  Remove unused global.

	Pre-patches for future source_location / location_t merge.
	* tree.h (EXPR_LOCATION, EXPR_HAS_LOCATION):  New macros.
	* expr.c (expand_expr_real, expand_expr_real_1):  Use new macros.
	* gimple-low.c (lower_stmt):  Likewise.
	* gimplify.c (annotate_all_with_locus):  Likewise.
	* print-tree.c (print_node):  Likewise.
	* tree-inline.c (expand_call_inline):  Likewise.
	* tree-pretty-print.c (tree-pretty-print.c):  Likewise.
	* tree-sra.c (scalarize_structure_assignment, emit_scalar_copies,
	scalarize_call_expr):  Likewise.
	* tree-ssa-pre.c (code_motion):  Likewise.
	
2004-04-23  Andrew Pinski  <pinskia@physics.uc.edu>

	* c-simplify.c (gimplify_decl_stmt) [TYPE_DECL]:
	Do not check the type.

2004-04-22  Jeff Law  <law@redhat.com>

	* tree-into-ssa.c (rewrite_initialize_block_local_data): Mark all
	arguments as potentially unused.  Do not bother to VARRAY_CLEAR
	the block_defs.  Instead abort if we are presented with a block
	which has a nonempty block_defs.  Wrap entire thing inside
	#ifdef ENABLE_CHECKING.
	* tree-ssa-dom.c (dom_opt_initialize_block_local_data): Similarly

	* tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Do not mark
	arguments to bypassed PHIs as needing to be rewritten.

2004-04-21  Richard Henderson  <rth@redhat.com>

	PR middle-end/14978
	* tree-nested.c (convert_nonlocal_reference): Set val_only when
	processing any otherwise unhandled expression.

2004-04-21  Jeff Law  <law@redhat.com>

	* tree-ssa-copy.c (cprop_operand): Break out of cprop_into_stmt.
	(cprop_into_stmt): Use cprop_operand.  Rearrange slightly to avoid
	switch statement inside a loop.

	* tree-flow.h (var_ann_d): Add "current_def" field.
	(register_new_def): Lose last argument (currdefs table).
	* tree-into-ssa.c (currdefs): Remove.
	(rewrite_into_ssa): Initialize current_def field on each variable's
	annotation.  Remove initialization/clearing of currdefs.
	(set_value_for, get_value_for): Kill.
	(rewrite_initialize_block): Update call to register_new_def.
	(rewrite_stmt): Similarly.
	(rewrite_finalize_block): Get/set a _DECL node's current
	definition from its annotation.
	(get_reaching_def): Similarly.
	(register_new_def): Similarly.  Lose last argument.
	* tree-ssa-dom.c (currdefs): Remove.
	(get_value_for, set_value_for): Simplify.
	(tree_ssa_dominator_optimize): Initialize current_def on each
	variable's annotation.  Remove initialization/clearing of currdefs.
	(thread_across_edge): Lose unnecessary argument to register_new_def.
	(record_equivalences_from_phis): Likewise.
	(register_definitions_for_stmt): Likewise.
	(restore_currdefs_to_original_value): Get/set a _DECL node's current
	definition from its annotation.  Lose unnecessary "table" argument.
	(dom_opt_finalize_block): Corresponding changes.

	* tree-dfa.c (free_df_for_stmt): Release memory back to the GC
	system immediately.

2004-04-21  Ben Elliston  <bje@au.ibm.com>

	PR middle-end/14730
	* expr.c (expand_expr_real_1) <SWITCH_EXPR>: Discard out of bounds
	case label values and ranges.  Saturate case range values that
	exceed the minimum or maximum permitted value for the controlling
	expression type to TYPE_MIN_VALUE or TYPE_MAX_VALUE.

2004-04-20  Jeff Law  <law@redhat.com>

	* tree-into-ssa.c (register_new_def): Avoid pushing useless
	information onto the block local definition stack.

	* tree-into-ssa.c (register_new_def): If there is no current
	reaching definition for SSA_NAME_VAR (DEF), then just push
	SSA_NAME_VAR (DEF) onto the stack.
	(rewrite_finalize_block): If we pop a _DECL node from the stack,
	then the _DECL node has no current reaching definition.
	* tree-ssa-dom.c (restore_currdefs_to_original_value): Similarly.

2004-04-19  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c: Reinstate all changes from 2004-04-12.
	(lookup_avail_expr): Do not access a hash table object after
	it has been freed.

2004-04-19  Daniel Berlin  <dberlin@dberlin.org>

	* doc/passes.texi: Add blurb about PRE.

2004-04-19  Andrew Pinski  <pinskia@physics.uc.edu>

	* tree-ssa-phiopt.c (conditional_replacement):
	Catch some more non-gimple.

2004-04-19  Jan Hubicka  <jh@suse.cz>

	* predict.c (combine_predictions_for_bb): Fix pasto.

2004-04-18  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (estimate_num_insn_1): Deal properly with
	builtin_constant_p and builtin_expect.

2004-04-17  Andrew MacLeod  <amacleod@redhat.com>

	* doc/invoke.texi (tree-ter, tree-lrs): Document options.

2004-04-17  Paul Brook  <paul@codesourcery.com>

	* Makefile.in: Set GMPLIBS and GMPINC.
	* configure.ac: Add GMPLIBS and GMPINC.
	* configure: Regenerate.

2004-04-16  Andrew MacLeod  <amacleod@redhat.com>

	* common.opt (ftree-lrs): New common option.
	* flags.h (flag_tree_live_range_split): New flag.
	* opts.c (decode_options): Turn on LRS by default.
	(common_handle_option): Set LRS flag to specified value.
	* toplev.c (flag_tree_live_range_split): Initialize.
	(lang_independent_options f_): Add tree-lrs.
	* tree-outof-ssa.c (rewrite_out_of_ssa): Use LRS flag.
	* tree-ssa-copyrename.c (copy_rename_partition_coalesce): Don't coalesce
	variables if one is a hardware register.  Coalesce inlined user vars.
	(rename_ssa_copies): Scan blocks first, then PHI nodes.

2004-04-15  Andrew Pinski  <pinskia@physics.uc.edu>

	* builtins.c (fold_builtin_isascii): Do not return non-gimple
	code when we are in gimple form.
	(fold_builtin_isdigit): Do not return non-gimple
	code when we are in gimple form.

	* c-simplify.c (gimplify_decl_stmt): Handle TYPE_DECL.

2004-04-14  Paul Brook  <paul@codesourcery.com>

	* Makefile.in (GMPLIBS, GMPINC): Don't set.
	* configure.ac: Remove checks for GMP.
	* configure: Regenerate.

2004-04-13  Diego Novillo  <dnovillo@redhat.com>

	* fold-const.c, tree-ssa-ccp.c, tree-ssa-dom.c,
	tree-ssa.c, tree.c: Replace all uses of TREE_UNSIGNED with
	TYPE_UNSIGNED or DECL_UNSIGNED.

	* c-semantics.c (build_stmt): Don't check type nodes for
	side effects.

2004-04-13  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c: Revert all changes from 2004-04-12.

2004-04-12  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (struct expr_hash_elt): Add new field for hash value.
	(initialize_hash_element): New LHS argument.  Callers changed.
	Initialize the hash value field.
	(remove_local_expressions_from_table): Use htab_remove_elt_with_hash.
	(update_rhs_and_lookup_avail_expr): Similary.
	(lookup_avail_expr): Use htab_find_slot_with_hash.  Simplify slightly
	and pass LHS to initialize_hash_element.
	(record_cond): Also use htab_find_slot_with_hash.  Initialize the
	hash table entry with initialize_hash_element.
	(avail_expr_eq): Use the saved hash value rather than calling into
	the hash functions again.

	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Slightly rearrange
	code to clear tables before each iteration to be clearer.

	* tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Use
	DEF_OPS and VDEF_OPS instead of STMT_DEF_OPS and STMT_VDEF_OPS.

2004-04-12  Diego Novillo  <dnovillo@redhat.com>

	* flags.h (flag_tree_loop): Remove.  Update all users.
	* opts.c (common_handle_option) <OPT_ftree_loop_optimize>: Remove.
	* toplev.c (f_options): Remove -ftree-loop-optimize.
	* tree-optimize.c (init_tree_optimization_passes): Don't
	schedule pass_loop.
	* tree-ssa-loop.c (tree_ssa_loop_opt): Remove.
	(gate_loop): Remove.
	* doc/invoke.texi: Remove documentation for -ftree-loop-optimize.

2004-04-12  Diego Novillo  <dnovillo@redhat.com>

	* c-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Remove.
	* c-semantics.c (expand_stmt_toplev): Remove.
	* langhooks-def.h (LANG_HOOKS_RTL_EXPAND_INITIALIZER): Remove.
	(LANG_HOOKS_RTL_EXPAND_START): Remove.
	(LANG_HOOKS_RTL_EXPAND_STMT): Remove.
	(LANG_HOOKS_RTL_EXPAND_END): Remove.
	* langhooks.h (struct lang_hooks_for_rtl_expansion): Remove.
	(struct lang_hooks): Update.
	* tree-optimize.c (tree_rest_of_compilation): Don't call
	lang_hooks.rtl_expand.start nor lang_hooks.rtl_expand.end.
	Call expand_expr_stmt_value instead of
	lang_hooks.rtl_expand.stmt.
	* objc/objc-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Remove.


2004-04-12  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_do_switch_warnings): Use EXPR_LOCUS instead
	of STMT_LINENO.
	(c_walk_subtrees): Likewise.
	(c_estimate_num_insns_1): Remove FILE_STMT.
	* c-common.def (FILE_STMT): Remove.
	* c-common.h (FILE_STMT_FILENAME_NODE): Remove.
	(FILE_STMT_FILENAME, STMT_LINENO, STMT_LINENO_FOR_FN_P): Remove.
	(c_common_stmt_codes): Remove FILE_STMT.
	* c-dump.c (dump_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
	* c-parse.in (lineno_stmt, lineno_label): Likewise.
	* c-pretty-print.c (pp_c_statement): Remove FILE_STMT.
	* c-semantics.c (add_stmt): Don't emit FILE_STMT.  Do set
	EXPR_LOCUS if not yet set.
	(finish_stmt_tree): Don't set line for end of function.
	(build_stmt): Set EXPR_LOCUS instead of STMT_LINENO.
	(prep_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
	* c-simplify.c (c_gimplify_stmt): Remove FILE_STMT.
	(gimplify_block): Save and restore entire locus.
	(stmt_expr_last_stmt): Use EXPR_LOCUS instead of STMT_LINENO.
	* doc/c-tree.texi (FILE_STMT, FILE_STMT_FILENAME, STMT_LINENO): Remove.

2004-04-12  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (true_exprs, false_exprs): Kill.
	(struct expr_hash_elt): New structure for the expression hash table.
	(struct dom_walk_block_data): Kill block local true_exprs and
	false_exprs.
	(get_eq_expr_value): One less local varray argument.  Fix prototype.
	Use record_cond rather than record_cond_is_{true,false}.
	(true_false_expr_hash, true_false_expr_eq): Kill.
	(record_cond_is_true, record_cond_is_false): Collapse into ...
	(record_cond): New function.
	(tree_ssa_dominator_optimize): Kill references to true_exprs and
	false_exprs.  Use "free" as the free function for the avail_exprs
	hash table.
	(dom_opt_initialize_block_local_data): No longer initialize
	block local true/false expressions.
	(initialize_hash_element): New function.
	(remove_local_expressions_from_table): Use initialize_hash_element.
	(update_rhs_and_lookup_avail_expr): Similarly.
	(dom_opt_finalize_block): Record true/false expressions into the
	main avail_expr hash table.  Unwind main hash table appropriately.
	Use record_cond rather than record_cond_is_{true,false}.
	(record_equivalences_from_incoming_edge): Pass block local avail_exprs
	varray instead of block local true/false varrays to get_eq_expr_value.
	(dump_dominator_optimization_stats): Update to reflect that the
	true/false expression hash tables are gone.
	(lookup_avail_expr): Simplify slightly now that we only have one
	expression hash table.
	(avail_expr_hash, avail_expr_eq): Generalize slightly to handle new
	hash table entry structure and having true/false expression information
	in the available expression hash table.

2004-04-09  Jeff Law  <law@redhat.com>

	* tree-ssa_dom.c (register_definitions_for_stmt): Accept a statement
	annotation rather than the statement itself.  Callers changed.
	Use [V]DEF_OPS rather than STMT_[V]DEF_OPS.
	* tree-ssa-operands.c (get_stmt_operands): Slightly reorganize to
	avoid unnecessary calls to stmt_ann.
	* tree-ssa-pre.c (expr_phi_insertion): Get the statement's annotation
	and use [V]USE_OPS rather than STMT_[V]USE_OPS.
	(same_e_version_phi_result): Similarly
	(process_left_occs_and_kills): Similarly for [V]DEF_OPS and
	STMT_[V]DEF_OPS.
	* tree-ssa.c (replace_immediate_uses): Similarly.
	(verify_ssa): Similarly.  Also verify that VDEF_OPs uses are dominated
	by their sets.

	* tree-into-ssa.c (insert_phi_nodes_for): Use passed in worklist
	varray instead of allocated one for every variable we rewrite into
	SSA form.
	(insert_phi_nodes_1): Pass worklist varray from caller to
	insert_phi_nodes_for.
	(insert_phi_nodes): Allocate a worklist for insert_phi_nodes_for
	and pass it to insert_phi_nodes_1.

2004-04-08  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (nonzero_vars): Turn it into a bitmap.
	(tree_ssa_dominator_optimize): Update initialization, clearing and
	freeing of nonzero_vars.
	(restore_nonzero_vars_to_original_value): New function.
	(dom_opt_finalize_block): Use it.
	(record_var_is_nonzero): Only record the variable into the block
	local nonzero vars array if it did not already have a nonzero property.
	(lookup_avail_expr): Lookup the nonzero property of an SSA_NAME with
	a bitmap test.

	* fold-const.c (fold): Remove attempt to share code which
	simplifies tests against the highest/lowest value of a
	range between the main folder and the nondestructive folder.

2004-04-08  Brian Booth  <bbooth@redhat.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-into-ssa.c (invalidate_name_tags): New function.
	Mark aliases of invalidated name tags for renaming.
	(rewrite_into_ssa): Call invalidate_name_tags.

2004-04-07  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_call_expr): Remove argument POST_P.
	Update all callers.
	Don't use POST_P when gimplifying the call expression.

2004-04-07  Diego Novillo  <dnovillo@redhat.com>

	* doc/tree-ssa.texi: Add documentation for the dominator
	walker.

2004-04-07  Andrew MacLeod  <amacleod@redhat.com>

	* tree-outof-ssa.c: Update comments and reformat for legibility.
	* tree-ssa-copyrename.c: Update comments and reformat for legibility.
	* tree-ssa-live.c: Update comments and reformat for legibility.
	* tree-ssa-live.h: Update comments and reformat for legibility.

2004-04-07  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_call_expr): Don't use POST_P when
	gimplifying CALL_EXPR arguments.

2004-04-06  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c: Update comments and reformat for legibility.
	(find_vars_r): Remove special casing of MODIFY_EXPR and
	simplify logic.
	(compute_reached_uses, compute_reaching_defs, remove_decl,
	find_decl_location): Remove.
	(discover_nonconstat_array_refs_r,
	discover_nonconstant_array_refs): Move ...
	* tree-outof-ssa.c: ... here.

2004-04-05  Richard Henderson  <rth@redhat.com>

	* tree-simple.c (is_gimple_min_invariant): Disallow &a+i.
	* tree-ssa-ccp.c (maybe_fold_stmt_addition): Rename from
	maybe_fold_stmt_plus.  Handle MINUS_EXPR.
	(fold_stmt_r): Pass MINUS_EXPR to it.

2004-04-05  Ben Elliston  <bje@au.ibm.com>

	* Makefile.in (OBJS-common): Remove tree-browser.o.
	(cc1): Depend on @TREEBROWSER@ and include in list of objects.
	* configure.ac: Add --enable-tree-browser option.
	* configure: Rebuild.

2004-04-05  Andrew Pinski  <pinskia@physics.uc.edu>

	* tree-ssa-ccp.c (fold_stmt_r): Fix whitespace formatting.
	(set_rhs): Likewise.

2004-04-03  Paolo Bonzini  <bonzini@gnu.org>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-alias-common.c (find_func_aliases): Support
	assigning to BIT_FIELD_REFs.
	* tree-cfg.c (verify_expr): Don't allow assign to
	a register with BIT_FIELD_REF.
	* tree-dfa.c (get_virtual_var): Add consistency check on
	the shape of expected VARs.
	(discover_nonconstant_array_refs_r): Go through BIT_FIELD_REFs.
	* tree-simple.c: Document that BIT_FIELD_REFs are valid lvalues.
	* tree-ssa.c (set_is_used): Go through BIT_FIELD_REFs.
	* tree-ssa-operands.c (get_expr_operands): Mark VA_ARG_EXPR
	nodes as making volatile references.

2004-04-02  Fariborz Jahanian <fjahanian@apple.com>

	* c-convert.c (convert): Make convert work when converting
	to compatible types across translation unit.

2004-04-02  Andrew Pinski  <pinskia@physics.uc.edu>

	* Makefile.in (stage2_build): Remove support for
	rebuilding libbanshee.
	* configure.ac: Remove support for rebuilding
	libbanshee.
	* config.gcc (powerpc-*-darwin*): Do not rebuild
	libbanshee.

2004-04-01  Kazu Hirata  <kazu@cs.umass.edu>

	* tree-ssa-forwprop.c: Add a comment about forward propagation
	of TRUTH_NOT_EXPR.

2004-04-01  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (tree_rest_of_compilation): Fix typo in
	setting of in_gimple_form.

2004-04-01  Jeff Law  <law@redhat.com>

	* fold-const.c (fold_relational_hi_lo): Do not return non-gimple
	code when we are in gimple form.
	* tree-optimize.c (tree_rest_of_compilation): Note when we are in
	gimple form.
	* tree-ssa-ccp.c (ccp_fold): Tighten tests on return value from
	nondestructive_fold_{unary,binary}_to_constant.
	* tree.h (in_gimple_form): Declare.

	* tree-ssa.c (ssa_remove_edge): Correct looping structure.
	(ssa_redirect_edge): Similarly

2004-03-30  Brian Booth  <bbooth@redhat.com>

	* tree-pretty-print.c (dump_vops): Add flags argument and
	propagate it to dump_generic_node calls.
	(dump_generic_node): Update dump_vops call.

2004-03-29  Diego Novillo  <dnovillo@redhat.com>

	* configure.ac: Emit confirmation messages for libbanshee.
	* configure: Regenerate.

2004-03-29  Jan Hubicka  <jh@suse.cz>

	PR 14756
	* cgraphunit.c (cgraph_decide_inlining): Rewrite handling of
	always_inline functions.

2004-03-28  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (expand_call_inline):  Remove fixme introduced by
	nested function patch.

2004-03-26  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-operands.c (get_stmt_operands): Remove always-true
	predicate.

	* tree-ssa-alias.c (maybe_create_global_var): Create
	.GLOBAL_VAR if there are no call-clobbered variables.
	* tree-ssa-operands.c (get_stmt_operands): Add call-clobbering
	VDEFs for asm ("":::"memory") if there are call-clobbered
	variables or if .GLOBAL_VAR has been created.


2004-03-26  Diego Novillo  <dnovillo@redhat.com>

	* passes.c (rest_of_compilation): Re-enable .01.rtl
	dumps.

2004-03-25  Diego Novillo  <dnovillo@redhat.com>

	* tree-pretty-print.c (dump_generic_node) <WITH_RECORD_EXPR>: Remove.
	* tree-inline.c (estimate_num_insns_1) <WITH_RECORD_EXPR>: Remove.
	* fold-const.c (fold_relational_hi_lo): Change type of argument
	'type_p' to const tree and rename it to 'type'.  Update
	all callers.

2004-03-25  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (C_AND_OBJC_OBJS): Remove c-call-graph.o
	(c-call-graph.o): Remove.
	* c-call-graph.c: Remove.
	* c-tree.h (print_call_graph): Remove.
	(debug_call_graph): Remove.
	* tree-cfg.c: Update/add comments everywhere.
	(pre_insert_on_edge): Rename from bsi_insert_on_edge_immediate.
	* tree-flow.h (build_tree_cfg): Make static.
	(tree_cfg2dot): Likewise.
	(verify_stmt): Likewise.
	* tree-ssa-pre.c (insert_one_operand): Call pre_insert_on_edge.

2004-03-25  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-alias.c (struct alias_info): Change type of field
	'num_references' to varray_type.  Update all users.

2004-03-24  Jeff Law  <law@redhat.com>

	* c-mudflap (mflang_flush_calls): Use push_scope/pop_scope instead
	of pushlevel and poplevel.

2004-03-23  Richard Henderson  <rth@redhat.com>

	PR middle-end/14694
	* c-common.c (handle_alias_attribute): Mark aliased variables
	to be TREE_STATIC.

2004-03-23  Jeff Law  <law@redhat.com>

	* tree-into-ssa.c (register_new_def): Lose unnecessary VAR argument,
	instead derive VAR from DEF argument.
	(rewrite_initialize_block, rewrite_stmt, rewrite_operand): Corresponding
	changes.
	* tree-ssa-dom.c (register_definitions_for_stmt): Corresponding changes.
	(record_equivalences_from_phis): Likewise.
	(restore_currdefs_to_original_value): New, extracted from ...
	(dom_opt_finalize_block): Use restore_currdefs_to_original_value.
	Restore currdefs after threading across a true edge.
	(thread_across_edge): Register new defintions when we walk through
	a PHI node or real statement.
	* tree-flow.h (register_new_def): Updated.

2004-03-23  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-dce.c (find_obviously_necessary_stmts,
	perform_tree_ssa_dce): Do not remove loops.

2004-03-19  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/14643
	* tree-ssa-alias.c (group_aliases_into): Don't add a variable
	to its own may-alias set.
	(create_alias_map_for): New.
	(setup_pointers_and_addressables): Call it.
	Fix allocation of AI->ADDRESSABLE_VARS and AI->POINTERS.
	If there are no addressable variables and more than one
	dereferenced pointers, add type tags to the ADDRESSABLE_VARS
	array.
	(get_tmt_for): Add comment about using alias set equality when
	checking for existing tags.

2004-03-19  Kazu Hirata  <kazu@cs.umass.edu>

	* fold-const.c (fold_relational_const): Remove dead code.

2004-03-19  Dale Johannesen  <dalej@apple.com>

	* tree-ssa-dse.c (dse_optimize_stmt):  Redirect uses feeding into
	a deleted store correctly.

2004-03-19  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Fix typo.
	Eliminate unnecessary test of VAL.

	* tree-dfa.c (find_hidden_use_vars): Also look inside the
	PENDING_SIZES list for hidden uses.
	* tree-optimize.c (tree_rest_of_compilation): Expand used variables
	before setting up parameters.
	* tree-ssa-copyrename.c (rename_ssa_copies): Do nothing for copies
	where the LHS has a hidden use.

2004-03-18  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (TREE_FLOW_H): Reformat.
	(OBJS-common): Add tree-into-ssa.o and tree-outof-ssa.o.
	(tree-ssa.o): Remove dependency on domwalk.h and tree-ssa-live.h
	(tree-into-ssa.o): New.
	(tree-outof-ssa.o): New.
	(GTFILES): Remove tree-ssa.c.
	(gt-tree-ssa.h): Remove.
	* tree-into-ssa.c: New file.
	Move all the functions used to rename into SSA from tree-ssa.c.
	Update/add comments.
	Remove unused variables and structures.
	Don't use GGC for memory allocation.
	* tree-outof-ssa.c: New file.
	Move all the functions used to rename out of SSA from
	tree-ssa.c.
	Update/add comments.
	* tree-ssa-alias.c (compute_points_to_and_addr_escape): Add
	bibliographic reference.

2004-03-18  Jeff Law  <law@redhat.com>

	* Makefile.in (tree-tailcall.o): Depend on langhooks.h.
	* tree-tailcall.c: Include langhooks.h.
	(find_tail_calls): Use types_compatible_p langhook instead of
	equality test of TYPE_MAIN_VARIANT.

	* tree-nested.c (get_chain_decl): Mark the chain decl with
	TREE_NO_WARNING.

2004-03-18  Devang Patel  <dpatel@apple.com>

	* tree-ssa-live.c (new_tree_live_info): Set num_blocks to
	last_basic_block instead of n_basic_blocks.
	(calculate_live_on_entry): Use last_basic_block instead of
	n_basic_blocks.
	(calculate_live_on_exit): Same.

2004-03-17  Jeff Law  <law@redhat.com>

	* tree-tailcall.c (find_tail_calls): Tighten test for tail recursion.

2004-03-17  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/14511
	* tree-ssa-alias.c (compute_flow_insensitive_aliasing): Do not
	ignore read-only variables.
	(may_alias_p): Fix pointer-to-var calculation when 'var' is an
	array.

2004-03-17  Jan Hubicka  <jh@suse.cz>

	* tree-ssa.c (rewrite_into_ssa, compute_global_livein): Fix.

2004-03-17  Paolo Bonzini  <bonzini@gnu.org>

	* builtins.c (expand_builtin_constant_p,
	purge_builtin_constant_p): Remove.
	(expand_builtin): Expand __builtin_constant_p to zero.
	* function.c (struct function): Remove calls_constant_p.
	(current_function_calls_constant_p): Remove.
	* passes.c (rest_of_handle_gcse): Do not run
	purge_builtin_constant_p.
	* rtl.def (CONSTANT_P_RTX): Die die die.

	* cse.c (fold_rtx): Do not handle CONSTANT_P_RTX.
	* expr.c (emit_move_insn): Likewise.
	* gcse.c (want_to_gcse_p, gcse_constant_p): Likewise.
	* genrecog.c (validate_pattern): Likewise.
	* recog.c (immediate_operand): Likewise.
	* rtl.h (CONSTANT_P): Likewise.
	* simplify-rtx.c (simplify_rtx): Likewise.
	* config/alpha/alpha.c (input_operand): Likewise.
	* config/arm/arm.c (THUMB_LEGITIMATE_CONSTANT_P): Likewise.
	* config/c4x/c4x.c (const_operand): Likewise.
	* config/cris/cris.c (cris_gotless_symbol,
	cris_got_symbol): Likewise.
	* config/frv/frv.h (LEGITIMATE_PIC_OPERAND_P): Likewise.
	* config/ia64/ia64.c (gr_reg_or_5bit_operand,
	gr_reg_or_6bit_operand, gr_reg_or_8bit_operand,
	gr_reg_or_8bit_adjusted_operand,
	gr_reg_or_8bit_and_adjusted_operand,
	gr_reg_or_14bit_operand, gr_reg_or_22bit_operand,
	shift_count_operand, shift_32bit_count_operand): Likewise.
	* config/m32r/m32r.c (move_src_operand): Likewise.
	* config/mips/mips.c (mips_const_insns): Likewise.
	* config/mmix/mmix.c (mmix_constant_address_p): Likewise.
	* config/pa/pa.c (move_src_operand): Likewise.
	* config/rs6000/rs6000.c (input_operand): Likewise.
	* config/sparc/sparc.c (input_operand): Likewise.
	* config/v850/v850.c (movsi_source_operand): Likewise.
	* config/xtensa/xtensa.c (move_operand,
	xtensa_emit_move_sequence): Likewise.
	* config/ia64/ia64.h (PREDICATE_CODES): Do not mention CONSTANT_P_RTX.
	* config/pa/pa.h (PREDICATE_CODES): Likewise.

2004-03-16  Diego Novillo  <dnovillo@redhat.com>

	* tree-dump.c (struct dump_option_value_info): Add TDF_UID.
	* tree.h (TDF_UID): Define.
	* doc/invoke.texi: Document -ftree-dump-...-uid.
	* tree-pretty-print.c (debug_generic_expr): Add TDF_UID.
	(debug_generic_stmt): Likewise.
	(dump_decl_name): New function.
	(dump_generic_node): Call it.
	(print_declaration): Add new argument 'flags'.  Update all users.
	(print_struct_decl): Likewise.
	* tree-alias-ander.c, tree-cfg.c, tree-dfa.c, tree-mudflap.c,
	tree-nrv.c, tree-sra.c, tree-ssa-alias.c, tree-ssa-ccp.c,
	tree-ssa-copy.c, tree-ssa-dom.c, tree-ssa-dse.c,
	tree-ssa-forwprop.c, tree-ssa-operands.c, tree-ssa-pre.c,
	tree-ssa.c, tree-tail-call.c: Call print_generic_* with
	'dump_flags'.

2004-03-16  Dale Johannesen  <dalej@apple.com>

	* Makefile.in (tree-ssa-phiopt.o): add langhooks.h dependency.
	(tree-nrv.o): Ditto.
	(tree-ssa-copy.o): Ditto.
	(tree-ssa-dom.o): Ditto.
	(tree-ssa-ccp.o): Ditto.
	* c-common.c: Add #include hashtab.h.
	(c_type_hash): New.
	(c_common_get_alias_set): Handle multiple type nodes referring
	to "the same" type, currently for C90 only.
	* c-decl.c (current_file_decl): Move to toplev.c.
	* c-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Define to
	c_types_compatible_p.
	(c_types_compatible_p): New.
	* c-tree.h (c_types_compatible_p): New declaration.
	* c-typeck.c (tagged_types_tu_compatible_p): Allow for
	compiler-generated TYPE_DECLs without a DECL_ORIGINAL_TYPE.
	* gimplify.c (canonicalize_addr_expr): Use types_compatible_p langhook.
	(cpt_same_type): Ditto.
	* langhooks-def.h (lhd_types_compatible_p): New declaration.
	LANG_HOOKS_TYPES_COMPATIBLE_P: New.
	* langhooks.c (lhd_types_compatible_p): New.
	* langhooks.h (struct lang_hooks): Add types_compatible_p.
	* stmt.c (tail_recursion_args): Use types_compatible_p langhook.
	* toplev.c (current_file_decl): New, moved from c-decl.c.
	* tree-nrv.c: Include langhooks.h.
	(tree_nrv): Use types_compatible_p langhook.
	* tree-ssa-ccp.c: Include langhooks.h.
	(maybe_fold_offset_to_array_ref): Use types_compatible_p langhook.
	(maybe_fold_offset_to_component_ref): Ditto (2 places).
	(fold_stmt_r): Make sure rhs of COMPONENT_REF is in lhs type.
	* tree-ssa-copy.c: Include langhooks.h.
	(cprop_into_stmt): Use types_compatible_p langhook.
	* tree-ssa-dom.c: Include langhooks.h.
	(avail_expr_p): Use types_compatible_p langhook.
	* tree-ssa-phiopt.c: Include langhooks.h.
	(conditional_replacement): Use types_compatible_p langhook.
	* tree-ssa.c (tree_ssa_useless_type_conversion_1): Use
	types_compatible_p langhook.
	* tree.h (current_file_decl): New declaration.

2004-03-16  Dale Johannesen  <dalej@apple.com>

	PR optimization/14498
	* gimplify.c (copy_if_shared_r): Mark VA_ARGS_EXPRs as volatile.
	(mark_decls_volatile_r): Moved higher in file (unchanged).

2004-03-16  Daniel Berlin  <dberlin@dberlin.org>

	PR optimization/14562
	* tree-ssa-pre.c (generate_expr_as_of_bb): Don't use names_match_p.
	(generate_vops_as_of_bb): Ditto.

2004-03-12  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/14553
	* tree-ssa.c (replace_immediate_uses): Call propagate_value to
	update operands.

2004-03-12  Diego Novillo  <dnovillo@redhat.com>

	* tree-alias-common.c (create_alias_vars): Add #if
	HAVE_BANSHEE around test for PTA_ANDERSEN.

2004-03-11  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (struct walk_state): Remove fields 'is_store' and
	'is_indirect_ref'.  Update all users.
	* tree-flow.h (struct var_ann_d): Remove fields 'is_stored',
	'is_dereferenced_store' and 'is_dereferenced_load'.  Update
	all users.
	* tree-simple.c (get_base_address): Handle BIT_FIELD_REF.
	* tree-ssa-alias.c (struct alias_info): Add fields
	'written_vars', 'dereferenced_ptrs_store' and
	'dereferenced_ptrs_load'.
	(init_alias_info): Initialize them.
	(delete_alias_info): Free them.
	(find_ptr_dereference): New.
	(ptr_is_dereferenced_by): Call it.
	Add new argument 'is_store'.  Set to true if the
	expression is an indirect store operation.
	(compute_points_to_and_addr_escape): If the statement
	makes a store, load or write operation, update the
	corresponding bitmap.
	(compute_flow_insensitive_aliasing): Test the
	'written_vars' bitmap to determine if alias sets should
	be computed.
	(setup_pointers_and_addressables): Always assume that
	volatile pointers and hidden pointers have been used in a
	memory store operation.
	* tree-ssa-operands.c (add_stmt_operand): Do add an
	operand for may-aliased variables before computing
	aliases.

2004-03-11  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-optimize.c (init_tree_optimization_passes): Move
	pass_tail_recursion and pass_ch after pass_may_alias.
	* tree-ssa-loop.c (mark_defs_for_rewrite): Mark type tags
	for rewriting.
	* tree-ssa.c (mark_def_sites): Process the operand of a
	VDEF before the result.

2004-03-11  Richard Henderson  <rth@redhat.com>

	PR 14204
	* tree-ssa.c (warn_uninit): Don't warn for hard register variables.

2004-03-10  Richard Henderson  <rth@redhat.com>

	* tree-simple.c (get_base_var, get_base_decl): Remove.
	* tree-simple.h: Likewise.
	* tree-dfa.c (discover_nonconstant_array_refs_r): Use get_base_address.
	* tree-ssa-alias.c (ptr_is_dereferenced_by): Likewise.
	(add_pointed_to_var, is_escape_site): Likewise.
	* tree-ssa-ccp.c (get_default_value): Expect only SSA_NAME and DECLs.
	* tree-ssa-operands.c (add_stmt_operand): Likewise.
	(note_addressable): Use get_base_address.
	* tree-ssa-dce.c (need_to_preserve_store): Expect only SSA_NAME.
	* tree-ssa.c (set_is_used): Inline get_base_decl.

2004-03-10  Richard Henderson  <rth@redhat.com>

	* tree-nested.c (convert_nonlocal_reference): Clear TREE_INVARIANT
	on modified ADDR_EXPRs.

2004-03-10  Andrew Pinski  <apinski@apple.com

	PR c/14475
	* c-decl.c (check_bitfield_type_and_width): Check for null
	lang_type_specific when check the precision of an enum.

2004-03-09  Andrew Pinski  <apinski@apple.com>

	* Makefile.in (tree-ssa-forwprop.o): Fix the dependences.

2004-03-09  Jeff Law  <law@redhat.com>

	* tree-flow-inline.h (may_propagate_copy): Do not allow propagation of
	a constant for a virtual operand.

2004-03-08  Richard Henderson <rth@redhat.com>

	* calls.c (initialize_argument_information): Add
	parameter may_tail_call.  Set to false for invisible
	pass-by-reference arguments that require stack
	allocation.
	Update all users.

2004-03-07  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c: (get_eq_expr_value): Fix typo when comparing a
	boolean against a constant.
	* tree-ssa-forwprop.c (record_single_argument_cond_exprs): Do not
	record the same SSA_NAME more than once.  Only record the SSA_NAME
	tested, not the COND_EXPR.
	(substitute_single_use_vars): Substitute booleans which are
	set from a TRUTH_NOT_EXPR even if they have more than one use site.

2004-03-05  Jeff Law  <law@redhat.com>

	* tree-ssa-dce.c (remove_dead_stmt): Clear PENDING_STMT after
	redirect_edge_and_branch call.

	* tree-ssa-forwprop.c (record_single_argument_cond_exprs): Also
	record COND_EXPRs with single use vars defined by SSA_NAME + CONST
	expressions.
	(substitute_single_use_vars): Corresponding changes to rewrite
	COND_EXPRs using single use vars defined by SSA_NAME + CONST
	expressions.

2004-03-05  Ulrich Weigand  <uweigand@de.ibm.com>

	* config/s390/s390.c (s390_expand_movstr): Do not use
	expand_exit_loop_top_cond, manually copy loop header.
	(s390_expand_clrstr): Likewise.
	(s390_expand_cmpmem): Likewise.

2004-03-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-alias.c (compute_flow_sensitive_aliasing): If
	a name tag has been marked call-clobbered, also mark the
	corresponding type tag.

2004-03-04  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-loop-live.c (coalesce_tpa_members): Update the root
	variable of the partition.

2004-03-04  Jeff Law  <law@redhat.com>

	* tree-ssa-dce.c (remove_dead_stmt): Redirect an existing edge
	rather than deleting the old ones and creating a new one when
	removing a dead conditional.

	* fold-const.c (fold): When rebuilding the expression after a
	call to fold_relational_hi_lo, make sure to convert the type of
	the second argument to the type of the first.

2004-03-04  Diego Novillo  <dnovillo@redhat.com>

	* cgraphunit.c (cgraph_optimize): Do not do memory release
	check if there have been errors.

2004-03-03  Jeff Law  <law@redhat.com>

	* tree-ssa-phiopt.c (conditional_replacement): Clear EDGE_TRUE_VALUE
	and EDGE_FALSE_VALUE on the remaining edge after eliminating a PHI.

2004-03-03  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-copyrename.c (gate_copyrename): Really check it in.
	* tree-ssa.c (create_temp): Use DECL_ARTIFICIAL from original decl.

2004-03-02  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-tailcall.c (struct tailcall): Remove return_block and return_bsi
	fields, add m and a fields.
	(m_acc, a_acc): New.
	(find_tail_calls): Find tail calls on whose results simple operations
	are performed.
	(independent_on_stmt_p, process_assignment,
	propagate_through_phis, adjust_accumulator_values,
	adjust_return_value): New.
	(eliminate_tail_call): Update the accumulators if needed.
	(optimize_tail_call): Do not create phis.
	(tree_optimize_tail_calls): Create phis and accumulators as needed.
	Adjust return values.

2004-03-02  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-operands.c (get_expr_operands): Mark CALL_EXPRs
	with has_volatile_ops if aliases haven't been computed yet.
	(add_stmt_operand): Use 'true' instead of '1'.

2004-03-02  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/14266
	* tree-ssa-alias.c (create_global_var): Mark GLOBAL_VAR for
	renaming.

2004-03-01  Richard Henderson  <rth@redhat.com>

	* tree.c (associative_tree_code): Remove MINUS_EXPR, LSHIFT_EXPR,
	RSHIFT_EXPR.
	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Use
	is_gimple_min_invariant and is_gimple_var.  Handle minus_expr
	specially.

2004-03-01  Richard Henderson  <rth@redhat.com>

	* cfgbuild.c (rtl_make_eh_edge): Rename from make_eh_edge.
	* basic-block.h, except.c: Update decl and uses.

2004-03-01  Frank Ch. Eigler  <fche@redhat.com>

	* doc/passes.texi: Add information about mudflap.

2004-03-01  Andrew Pinski  <pinskia@physics.uc.edu>

	PR middle-end/13066
	* fold-const (fold): Call fold_convert when building
	a TRUTH_*_EXPR tree.

2004-03-01  Andrew MacLeod  <amacleod@redhat.com>

	* common.opt : Add tree-copyrename option. Remove duplicate tree-sra.
	* flags.h (flag_tree_copyrename): Declare.
	* opts.c (decode_options): Turn copyrename on by default at -O.
	(common_handle_option): Handle -ftree-copyrename.
	* toplev.c (flag_tree_copyrename): Declare.
	* tree-ssa-copyrename.c (gate_copyrename): New.  Check flag.
	(pass_rename_ssa_copies): Initialize with gated routine.
	(lang_independent_options f_): Add tree-copyrename.
	* doc/invoke.texi: Add -fdump-tree-copyrename and  -ftree-copyrename.
	* doc/passes.texi: Add blurb for copy renaming.

2004-03-01  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (true_false_expr_hash): Update comments slightly.
	(true_false_expr_eq): Update comments slightly.  Avoid using
	operand_equal_p, instead check the code and operands directly.

2004-03-01  Andrew MacLeod  <amacleod@redhat.com>

	* Makefile.in (tree-ssa-copyrename.o): New object.
	* timevar.def (TV_TREE_COPY_RENAME): New time variable.
	* tree-optimize.c (init_tree_optimization_passes): Add copy rename
	pass.
	* tree-pass.h (pass_rename_ssa_copies): New pass structure.
	* tree-sra.c (lookup_scalar): Copy DECL_ARITIFICIAL flag from base.
	* tree-ssa-copyrename.c : New file.
	(copy_rename_partition_coalesce): Coalesce partitions for renaming.
	(rename_ssa_copies): Find renamable copies.
	(pass_rename_ssa_copies): Initialize.
	* tree-ssa-live.c (register_ssa_partition): Move to tree-ssa-live.h.
	* tree-ssa-live.h (register_ssa_partition): Moved from tree-ssa-live.c.

2004-02-29  David Edelsohn  <edelsohn@gnu.org>

	* doloop.c (doloop_optimize): Increment n_iterations if loop->top
	present.

2004-02-29  Diego Novillo  <dnovillo@redhat.com>

	* gimple-low.c (pass_remove_useless_vars): Add TODO_dump_func.

2004-02-27  Richard Henderson  <rth@redhat.com>

	PR middle-end/14310
	* explow.c (emit_stack_save): Remove savearea mode check.

2004-02-27  Richard Henderson  <rth@redhat.com>

	* builtins.c (simplify_builtin_strcmp): Don't export.  Remove
	length parameters.  Remove conversion to memcmp.
	(simplify_builtin_strncmp): Likewise.
	* expr.h: Don't declare them.
	* tree-ssa-ccp.c (ccp_fold_builtin): Don't call them.

2004-02-27  Dale Johannesen  <dalej@apple.com>

	* tree-cfg.c (cleanup_control_expr_graph): Prevent edge
	probability from overflowing due to roundoff errors.

2004-02-27  Jeff Law  <law@redhat.com>

	* tree-cfg.c (verify_expr): Do not walk down into types.
	Expand checking to verify that unary/binary operators have
	gimple operands.
	* tree-ssa-ccp.c (ccp_fold_builtin, case BUILT_IN_STRLEN): Do not
	create non-gimple code.  Similarly for BUILTIN_IN_STRCPY and
	BUILT_IN_STRNCPY.
	* tree-ssa-phiopt.c (conditional_replacement): Do not create
	non-gimple code.
	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Likewise.

	* tree-simple.c (is_gimple_min_invariant): Subtraction of a
	constant from a constant pointer is a gimple invariant as well.
	* tree-ssa-operands.c (get_expr_operands): Handle subtraction
	of a constant from a constant pointer too.

	* fold-const.c (fold): Tighten test for optimizing an equality
	comparison of the address of two variables.

	* tree-inline.c (setup_one_parameter): Improve test for when we
	need to gimplify the initialization statements.

2004-02-27  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/14312
	* tree-pretty-print.c (dump_generic_node): Mark tail calls.
	* tree-ssa-alias.c (compute_may_aliases): Restore call to
	dump_referenced_vars.
	(compute_points_to_and_addr_escape): If the address of a
	variable V is stored into a non-pointer variable, mark V as
	call-clobbered.
	* tree-tailcall.c (suitable_for_tail_opt_p): Check for
	call-clobbered instead of TREE_ADDRESSABLE.
	Ignore memory tags.
	(optimize_tail_call): Add newline to dump output.

2004-02-27  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/13347
	* tree-sra.c (scalarize_structure_assignment): Use STRIP_NOPS
	instead of STRIP_USELESS_TYPE_CONVERSION to remove type casts
	from RHS of the assignment.

	* tree-ssa.c (tree_ssa_useless_type_conversion_1): Reformat
	and rephrase comments.
	* tree.h (STRIP_USELESS_TYPE_CONVERSION): Reformat comment.

2004-02-26  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (tree_redirect_edge_and_branch_1): Allow to redirect
	RETURN_EXPR branches.

2004-02-26  Jeff Law  <law@redhat.com>

	* tree-nrv.c (tree_nrv): Only perform NRV optimization when the
	return value lives in memory.

	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): If an
	operand is unsigned, then we can eliminate more ABS expressions
	and turned div/mod expression into shift/and expressions.

	* fold-const.c (fold): An equality comparison of the address of
	two non-weak variables has known compile-time result.

2004-02-26  Andrew Pinski  <pinskia@physics.uc.edu>

	* tree-ssa-phiopt.c (conditional_replacement):
	s/tree_dump_flags/dump_flags/.

	* tree-ssa-phiopt.c (tree_ssa_phiopt): Split into ...
	(conditional_replacement): Here.

2004-02-26  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa.c (find_replaceable_in_bb): Don't repalce expressions in
	volatile statements.

2004-02-25  Richard Henderson  <rth@redhat.com>

	PR opt/14288
	* gimplify.c (gimple_push_cleanup): Add VAR argument.  Set
	TREE_NO_WARNING if in a conditional context.
	(gimplify_target_expr): Pass new argument.
	* tree-sra.c (lookup_scalar): Copy TREE_NO_WARNING to replacement.

2004-02-24  Kazu Hirata  <kazu@cs.umass.edu>

	* doc/invoke.texi: Replace -fdump-tree-all-ssa with
	-fdump-tree-all.

2004-02-24  Kazu Hirata  <kazu@cs.umass.edu>

	PR target/14285
	* config/arm/arm.c (arm_compute_func_type): Replace
	"current_function_needs_context" with "cfun->static_chain_decl
	!= NULL".
	(arm_compute_initial_elimination_offset): Likewise.
	* config/h8300/h8300.c (h8300_emit_stack_adjustment):
	Likewise.
	* config/sh/sh.c (output_stack_adjust): Likewise.
	(sh5_schedule_saves): Likewise.
	* config/xtensa/xtensa.c (compute_frame_size): Likewise.

2004-02-24  Richard Henderson  <rth@redhat.com>

	* c-simplify.c (c_genericize): s/dump_flags/local_dump_flags/.
	* predict.c, tree-alias-ander.c, tree-cfg.c, tree-nrv.c,
	tree-optimize.c, tree-pass.h, tree-sra.c, tree-ssa-alias.c,
	tree-ssa-ccp.c, tree-ssa-copy.c, tree-ssa-dce.c, tree-ssa-dom.c,
	tree-ssa-dse.c, tree-ssa-forwprop.c, tree-ssa-loop.c,
	tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa.c, tree-tailcall.c:
	s/tree_dump_flags/dump_flags/.

2004-02-24  Richard Henderson  <rth@redhat.com>

	* predict.c, tree-alias-ander.c, tree-cfg.c, tree-mudflap.c,
	tree-nrv.c, tree-optimize.c, tree-pass.h, tree-profile.c, tree-sra.c,
	tree-ssa-alias.c, tree-ssa-ccp.c, tree-ssa-copy.c, tree-ssa-dce.c,
	tree-ssa-dom.c, tree-ssa-dse.c, tree-ssa-forwprop.c, tree-ssa-loop.c,
	tree-ssa-operands.c, tree-ssa-phiopt.c, tree-ssa-pre.c, tree-ssa.c,
	tree-tailcall.c: s/tree_dump_file/dump_file/g.

2004-02-24  Diego Novillo  <dnovillo@redhat.com>

	* doc/tree-ssa.texi: Fix formatting mark ups.

2004-02-24  Jeff Law  <law@redhat.com>

	* gimple-low.c (remove_useless_vars): Now static.
	(pass_remove_useless_vars): New.
	* tree-flow.h (remove_useless_vars): Remove prototype.
	* tree-nrv.c (struct nrv_data): Remove visited hashtable.
	(finalize_nrv_r): Do not descend into types. No need to update
	the visited hashtable.
	(tree_nrv): No need to allocate/free the visited hashtable.
	Clear the used flag on the variable's annotation.
	* tree-optimize.c (init_tree_optimizatio_passes): Link in
	pass_remove_useless_vars.
	* tree-pass.h (pass_remove_useless_vars): Declare.
	* tree-ssa.c (rewrite_out_of_ssa): Do not remove useless vars here.

	* Makefile.in (OBJS-common): Add tree-nrv.o.
	(tree-nrv.o): Add dependencies.
	* timevar.def (TV_TREE_NRV): New timevar.
	* tree-nrv.c: New file implementing NRV on generic trees.
	* tree-optimize.c (init_tree_optimization_passes): Link in
	tree_nrv optimization pass.
	* tree-pass.h (tree_nrv): Declare.
	* doc/invoke.texi: Add -fdump-tree-nrv documentation.

2004-02-24  Sebastian Pop  <sebastian.pop@cri.ensmp.fr>

	* tree-flow.h (walk_use_def_chains_fn): Return a boolean.
	True for stopping the use-def walk, false otherwise.
	* tree-ssa-alias.c (collect_points_to_info_r): Same.
	Always return false, and never stopping the def-use walk as before.
	* tree-ssa.c (walk_use_def_chains_1): Stop when the result of the
	callback function is true.
	* doc/tree-ssa.texi: Document the behavior of the callback
	function for walk_use_def_chains.

2004-02-24  Richard Henderson  <rth@redhat.com>

	* doc/passes.texi: Rewrite.

2004-02-23  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (TEXI_GCCINT_FILES): Add cfg.texi and tree-ssa.texi
	* tree-ssa-alias.c (compute_may_aliases): Update documentation.
	* doc/gccint.texi: Add node for Tree SSA documentation.
	Include tree-ssa.texi.
	* doc/tree-ssa.texi: New file.

2004-02-23  Dale Johannesen <dalej@apple.com>

	* config/rs6000/rs6000.md:  Roll in changes from mainline:
	(movdf_softfloat64):  Add POWER form of nop.
	(movsf_hardfloat): Ditto, and accept CTR-to-CTR copy.
	(movdf_hardfloat64):  Ditto.

2004-02-23  Jeff Law  <law@redhat.com>

	* ggc-page.c (struct page_entry): New field PREV.
	(ggc_alloc): Update PREV field appropriately.
	(sweep_pages): Likewise.
	(ggc_free): Likewise.  Use PREV field rather than loop to
	improve ggc_free performance.

	* Makefile.in (OBJC-common): Add tree-ssa-copy.o.
	(tree-ssa-copy.o): Add dependencies.
	* tree-flow.h (propagate_value, replace_exp): Prototype.
	(cprop_into_stmt, cprop_into_successor_phis): Likewise.
	* tree-ssa-copy.c: New file, most functions copied from tree-ssa-dom.c
	(cprop_into_stmt): Handle pointer & reference types better.
	* tree-ssa-dom.c (opt_stats_d): Kill uninteresting stats.
	(dump_dominator_optimization_stats): Corresponding changes.
	(cprop_into_stmt): Moved into tree-ssa-copy.c.
	(propagate_value): Likewise.
	(cprop_into_phis): Simplify using code fromi tree-ssa-copy.c.
	(optimize_stmt): Pass additional argument to cprop_into_stmt.
	* tree-ssa-pre.c (generate_expr_as_of_bb): Use replace_exp.
	(generate_vops_as_of_bb): Similarly.

2004-02-21  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (decide_is_function_needed): Nested functions of extern
	inline functions don't need to be output.
	(expand_function): Re-enable sanity check.

2004-02-21  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-loop.c (do_while_loop_p): New function.
	(copy_loop_headers): Do not peel do-while loops.

2004-02-21  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (cleanup_control_expr_graph): Update profile.

	* tree-cfg.c (disband_implicit_edges): Set fallthru edges correctly.

	* cfg.c (dump_flow_info): Work on trees too.

	* tree-pretty-print.c (dump_generic_bb_stuff):  Do not touch bb
	annotations when not allocated.

2004-02-21  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (cprop_into_stmt): Look at the type's main variant
	to determine if the two operands of a copy have equivalent types.

2004-02-20  Jeff Law  <law@redhat.com>

	* tree-flow-inline.h (may_propagate_copy): Do not perform ABNORMAL_PHI
	and DECL_HARD_REGISTER tests on virtual operands.
	* tree-flow.h (propagate_copy): Kill prototype.
	(propagate_value): New prototype.
	* tree-ssa-dom.c (propagate_copy): Now static.
	(propagate_value): No longer static.

2004-02-20  Richard Henderson  <rth@redhat.com>

	PR middle-end/14218
	* c-simplify.c (mark_labels_r): Move to ...
	* gimplify.c (force_labels_r): ... here, and rename.
	(gimplify_init_constructor): Invoke it.
	* tree-simple.h (force_labels_r): Declare.

2004-02-20  Richard Henderson  <rth@redhat.com>

	PR opt/14194
	* tree-ssa-ccp.c (substitute_and_fold): Also mark new vars
	if fold_stmt was successful.

2004-02-20  Diego Novillo  <dnovillo@redhat.com>

	* doc/invoke.texi: Add documentation for parameters
	global-var-threshold and max-aliased-vops.
	* params.def (PARAM_GLOBAL_VAR_THRESHOLD): Reformat help message.
	(PARAM_MAX_ALIASED_VOPS): Rename from PARAM_MAX_ALIAS_SET_SIZE.
	* params.h (MAX_ALIASED_VOPS): Rename from MAX_ALIAS_SET_SIZE.
	Update all users.
	* tree-ssa-alias.c (struct alias_map_d): Document fields.
	Add fields total_alias_vops, grouped_p and may_aliases.
	(struct alias_info): Change fields addressable_vars and
	pointers to malloc'd arrays.  Update all users.
	Add fields num_references and total_alias_vops.
	(compute_may_aliases): Add more comments.
	(init_alias_info): Initialize new fields in struct alias_info.
	(delete_alias_info): Corresponding changes.
	(compute_points_to_and_addr_escape): Count references to
	potentially aliased variables and pointer dereferences.
	(compute_flow_insensitive_aliasing): Remove old grouping
	heuristic.
	Count the number of virtual operands induced by all the alias
	sets created and call group_aliases if the number exceeds the
	threshold set by --param max-aliased-vops.
	(total_alias_vops_cmp): New.
	(group_aliases_into): New.
	(group_aliases): New.
	* tree-ssa-operands.c (get_expr_operands): Change dump file
	message when no flow-sensitive alias information is available.
	(add_stmt_operand): Reformat comment.
	* tree-ssa.c (init_tree_ssa): Don't call bitmap_clear.

	* tree-simple.c (get_base_decl): Fix typo in comment.

	* tree-pretty-print.c (print_call_name): Handle matrices of
	function pointers.

2004-02-20  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (tree-ssa-loop.o): Add tree-inline.h dependency.
	* basic-block.h (struct reorder_block_def): Moved from cfglayout.h.
	(alloc_rbi_pool, initialize_bb_rbi, free_rbi_pool): New.
	* bb-reorder.c (copy_bb): Use cfghooks for bb duplication.
	* cfg.c (rbi_pool): New variable.
	(alloc_rbi_pool, free_rbi_pool, initialize_bb_rbi): New functions.
	* cfghooks.c (can_duplicate_block_p, duplicate_block): New functions.
	* cfghooks.h (struct cfg_hooks): Add can_duplicate_block_p and
	duplicate_block hooks.
	(can_duplicate_block_p, duplicate_block): Declare.
	* cfglayout.c (cfg_layout_pool, cfg_layout_initialize_rbi): Removed.
	(fixup_reorder_chain): Use initialize_bb_rbi.
	(cfg_layout_can_duplicate_bb_p, cfg_layout_duplicate_bb): Hookized.
	(cfg_layout_initialize): Use cfg.c rbi pool manipulation functions.
	(can_copy_bbs_p, copy_bbs): Use cfghooks for bb duplication.
	* cfglayout.h (typedef struct reorder_block_def): Moved to
	basic_block.h.
	(cfg_layout_can_duplicate_bb_p, cfg_layout_duplicate_bb): Declaration
	removed.
	* cfgrtl.c (cfg_layout_create_basic_block): Use initialize_bb_rbi.
	(rtl_cfg_hooks, cfg_layout_rtl_cfg_hook): Fill in can_duplicate_block_p
	and duplicate_block fields.
	* common.opt (ftree-ch): Add.
	* flags.h (flag_tree_ch): Declare.
	* jump.c (next_nonnote_insn_in_loop, duplicate_loop_exit_test,
	copy_loop_headers): Removed.
	* loop-unswitch.c (unswitch_loop): Use cfghooks for bb duplication.
	* opts.c (decode_options): Enable flag_tree_ch at -O1.
	(common_handle_option): Handle -ftree_ch.
	* rtl.h (copy_loop_headers): Declaration removed.
	* timevar.def (TV_TREE_CH): New.
	* toplev.c (flag_tree_ch): New.
	(rest_of_compilation): Do not call copy_loop_headers.
	* tracer.c (tail_duplicate): Use cfghooks for bb duplication.
	* tree-cfg.c (build_tree_cfg): Call alloc_rbi_pool.
	(create_bb): Call initialize_bb_rbi.
	(delete_tree_cfg): Call free_rbi_pool.
	(tree_duplicate_bb): Hookize.
	(tree_can_duplicate_bb_p): New.
	(tree_cfg_hooks): Fill in can_duplicate_block_p and duplicate_block
	fields.
	* tree-flow.h (tree_duplicate_bb): Declaration removed.
	* tree-optimize.c (init_tree_optimization_passes): Add pass_ch.
	* tree-pass.h (pass_ch): Declare.
	* tree-ssa-loop.c: Include tree-inline.h.
	(call_expr_p, should_duplicate_loop_header_p, mark_defs_for_rewrite,
	duplicate_blocks, copy_loop_headers, gate_ch): New functions.
	(pass_ch): New.
	* doc/invoke.texi (-fdump-tree-ch, -ftree-ch): Document.

2004-02-19  David Edelsohn  <edelsohn@gnu.org>

	* config/rs6000/aix.h (MFWRAP_SPEC): Define.
	(MFLIB_SPEC): Define.

2004-02-19  Jeff Law  <law@redhat.com>

	* tree-ssa-phiopt.c (tree_ssa_phiopt): TRUTH_NOT_EXPR is valid
	gimple code.

2004-02-19  Steven Bosscher  <stevenb@suse.de>

	* tree-cfg.c (cleanup_dead_labels): New function to remove
	redundant labels.

	Remove the RTL inliner.
	* calls.c (try_to_integrate): Remove.
	(expand_call): Do not try to expand calls inline.
	* dbxout.c (dbxout_symbol_location): Don't mention integrate.c
	in comments.
	* expmed.c (extract_fixed_bit_field): Always propagate the
	target for the shift if it is a REG.
	* expr.c (emit_move_insn_1): Don't generate inline warnings.
	(expand_expr_real_1): Don't look at inline_function_decl.
	Don't output inlined functions here.
	* expr.h (expand_inline_function): Remove prototype.
	* emit-rtl.c (copy_most_rtx): Don't copy the integrated flag.
	Copy the new return_val flag.
	* final.c (final): Don't look at RTX_INTEGRATED_P.
	* cfgrtl.c (create_basic_block_structure): Likewise.
	* haifa-sched.c (priority): Likewise.
	(restore_line_notes): Likewise.
	* function.c (inline_function_decl): Remove.
	(put_var_into_stack): Don't use it.
	(fix_lexical_addr): Likewise.
	* function.c (inline_function_decl): Remove extern declaration.
	* genattrtab.c (ATTR_PERMANENT_P): Use the return_val flag
	instead of the integrated flag.
	* integrate.c (INTEGRATE_THRESHOLD): Remove.
	(setup_initial_hard_reg_value_integration): Likewise.
	(initialize_for_inline): Likewise.
	(note_modified_parmregs): Likewise.
	(integrate_parm_decls): Likewise.
	(process_reg_param): Likewise.
	(save_parm_insns): Likewise.
	(copy_insn_list): Likewise.
	(copy_insn_notes): Likewise.
	(compare_blocks): Likewise.
	(find_block): Likewise.
	(inlining): Likewise.
	(function_cannot_inline_p): Likewise.
	(parmdecl_map): Likewise.
	(in_nonparam_insns): Likewise.
	(save_for_inline): Likewise.
	(FIXED_BASE_PLUS): Likewise.
	(expand_inline_function): Likewise.
	(copy_rtx_and_substitute): Don't look at map->integrating,
	map->inline_target, and inlining, since we are never copying
	for integrating.
	Don't abort on RTX_INTEGRATED_P.
	(old_fun): Remove.
	(output_inline_function): Remove.
	* integrate.h (struct inline_map): Remove fields integrating,
	block_map, leaf_reg_map, inline_target, and local_return_label.
	* print-rtl.c (print_rtx): Don't print the integrated flag.
	Print the return_val flag.
	* rtl.h (struct rtx_def): Replace the integrated flag with the
	return_val flag.
	(RTX_INTEGRATED_P): Remove.
	(notice_rtl_inlining_of_deferred_constant): Remove prototype.
	* stmt.c (force_label_rtx): Don't look at inline_function_decl.
	* toplev.c (rest_of_handle_inlining): Remove.
	(rest_of_compilation): Don't call it, and never jump to exit.
	Call convert_from_eh_region_ranges.
	(wrapup_global_declarations): Don't output nested inlined functions.
	* tree.h (function_cannot_inline_p): Remove prototype.
	(save_for_inline): Ditto.
	(output_inline_function): Ditto.
	* unroll.c (unroll_loop): Don't clear map->inline_target.
	* varasm.c (notice_rtl_inlining_of_deferred_constant): Remove.

	* system.h: Poison INTEGRATE_THRESHOLD.
	* config/avr/avr.h: Remove define.
	* config/ip2k/ip2k.h: Likewise.

	* unwind-sjlj.c (uw_install_context): Make a proper static inline
	function.

	* doc/rtl.texi: Remove references to the integrated flag.
	* doc/tm.texi: Remove documentation of INTEGRATE_THRESHOLD.

2004-02-17  Andrew Macleod  <amacleod@redhat.com>

	* tree-ssa-live.c (coalesce_tpa_members): Don't coalesce partitions
	which are not in the same TPA group.
	* tree-ssa.c (rewrite_out_of_ssa): Coalesce via list first.

2004-02-17  Brian Booth  <bbooth@redhat.com>

	* tree-ssa-ccp.c (substitute_and_fold): Update stmt after
	calling fold_stmt.

2004-02-16  Andrew Pinski  <pinskia@physics.uc.edu>

	* config/rs6000/rs6000.c (output_function_profiler): Check
	cfun->static_chain_decl instead of current_function_needs_context.

2004-02-16  Jeff Law  <law@redhat.com>

	* tree-ssa.dse.c (dse_optimize_stmt): Dump info when we delete
	stores.

	* tree-ssa-dse.c: Update comments.

	* Makefile.in (OBJS-common): Add tree-ssa-dse.o
	(tree-ssa-dse.o): Add dependencies.
	* common.opt (ftree-dse): New option.
	* flags.h (flag_tree_dse): New.
	(flag_tree_dom): Fix comments.
	* opts.c (decode_options): Turn on flag_tree_dse.
	(common_handle_option): Handle  OPT_ftree_dse.
	* timevar.def (TV_TREE_PHIOPT): Update text.
	(TV_TREE_DSE): New timevar.
	* toplev.c (flag_tree_dse): New.
	(flag_tree_dom): Fix comments.
	(lang_independent_options): Add -ftree-dse.
	* tree-dfa.c (redirect_immediate_use): New function.
	(redirect_immediate_uses): New function.
	* tree-flow.h (stmt_ann_d): Add UID field.
	(redirect_immediate_uses): Declare.
	* tree-optimize.c (init_tree_optimization_passes): Link in DSE pass.
	* tree-pass.h (pass_dse): Declare.
	* tree-ssa-dse.c: New file implementing DSE.
	* doc/invoke.texi: Document new option.

2004-02-16  Richard Henderson  <rth@redhat.com>

	* tree-nested.c: New file.
	* Makefile.in (OBJS-common, GTFILES, tree-nested.o): Add it.
	* builtin-types.def (BT_FN_VOID_PTR_PTR, BT_FN_VOID_PTR_PTR_PTR): New.
	* builtins.c (expand_builtin_nonlocal_goto): New.
	(expand_builtin_apply): Fix prepare_call_address args.
	(round_trampoline_addr): Move from function.c.
	(expand_builtin_init_trampoline): New.
	(expand_builtin_adjust_trampoline): New.
	(expand_builtin): Invoke them.
	(build_function_call_expr): Add CALL_EXPR chain operand.
	* builtins.def (BUILT_IN_INIT_TRAMPOLINE,
	BUILT_IN_ADJUST_TRAMPOLINE, BUILT_IN_NONLOCAL_GOTO): New.
	* c-decl.c (finish_function): Call lower_nested_functions.
	(c_expand_decl): Don't declare_nonlocal_label.
	* calls.c (prepare_call_address): Replace fndecl arg with a
	precomputed static chain value.
	(expand_call): Precompute the static chain value.  Use
	update_nonlocal_goto_save_area.
	* cgraph.c (cgraph_mark_reachable_node): Don't force nested
	functions to be reachable.
	(cgraph_clone_node): Don't abort cloning functions containing
	nested functions.
	* cgraphunit.c (cgraph_assemble_pending_functions): Don't do
	anything special for nested functions.
	(cgraph_mark_functions_to_output): Likewise.
	(cgraph_estimate_growth, cgraph_clone_inlined_nodes): Likewise.
	(cgraph_optimize): Likewise.
	(cgraph_finalize_function): Don't zap DECL_SAVED_INSNS.
	(cgraph_expand_function): Allow functions to not be emitted.
	* defaults.h (TRAMPOLINE_ALIGNMENT): Move from function.c.
	* dwarf2out.c (gen_subprogram_die): Generate DW_AT_static_link.
	* emit-rtl.c (maybe_set_first_label_num): New.
	* explow.c (update_nonlocal_goto_save_area): New.
	(allocate_dynamic_stack_space): Use it.
	* expr.c (expand_expr_real_1) <LABEL_DECL>: Don't force_label_rtx.
	<COND_EXPR>: Ignore the possibility of non-local labels.
	<ADDR_EXPR>: Don't do trampoline_address.
	* expr.h (lookup_static_chain): Remove.
	(prepare_call_address): Update 2nd arg.
	(update_nonlocal_goto_save_area): Declare.
	* final.c (profile_function): Update static chain test.
	* function.c (TRAMPOLINE_ALIGNMENT): Move to defaults.h.
	(trampolines_created): Move to varasm.c.
	(free_after_compilation): Update for removed fields.
	(allocate_struct_function): Likewise.
	(delete_handlers, lookup_static_chain): Remove.
	(fix_lexical_addr): Don't consider non-local variable refs.
	(trampoline_address): Remove.
	(round_trampoline_addr): Move to builtins.c.
	(adjust_trampoline_addr): Remove.
	(expand_function_start): Update for changes to static chain
	and nonlocal goto handling.
	(initial_trampoline): Move to varasm.c.
	(expand_function_end): Don't build trampolines or kill
	unreferenced nonlocal goto labels.
	* function.h (struct function): Remove x_nonlocal_labels,
	x_nonlocal_goto_handler_slots, x_nonlocal_goto_stack_level,
	x_context_display, x_trampoline_list, needs_context.
	Add static_chain_decl, nonlocal_goto_save_area.
	* gimple-low.c (record_vars): Don't record functions.
	* gimplify.c (declare_tmp_vars): Export.
	(create_artificial_label): Set type.
	(gimplify_expr): Don't consider nonlocal gotos.
	* integrate.c (expand_inline_function): Kill lookup_static_chain ref.
	* jump.c (any_uncondjump_p): Reject nonlocal goto.
	* rtl.h (maybe_set_first_label_num): Declare.
	* stmt.c (label_rtx): Set LABEL_PRESERVE_P appropriately.
	(expand_label): Handle DECL_NONLOCAL and FORCED_LABEL.
	(declare_nonlocal_label): Remove.
	(expand_goto): Don't handle nonlocal gotos.
	(expand_nl_handler_label): Remove.
	(expand_nl_goto_receivers): Remove.
	(expand_end_bindings): Don't expand_nl_goto_receivers.  Use
	update_nonlocal_goto_save_area.
	* tree-cfg.c (make_edges): Handle abnormal edges out of block
	falling through to EXIT.
	(make_ctrl_stmt_edges): Don't check GOTO_EXPR for nonlocal goto.
	Handle computed goto with no destinations.
	(tree_can_merge_blocks_p): Don't merge blocks with nonlocal labels.
	(remove_useless_stmts_label, stmt_starts_bb_p): Likewise.
	(tree_forwarder_block_p): Likewise.
	(nonlocal_goto_p): Remove.
	(tree_verify_flow_info): Update to match.
	* tree-dump.c (dump_files): Add tree-nested.
	* tree-flow.h (nonlocal_goto_p): Remove.
	* tree-inline.c (setup_one_parameter): Split out from ...
	(initialize_inlined_parameters): ... here.  Handle static chain.
	(inline_forbidden_p_1): Update nonlocal goto check.
	(expand_call_inline): Disable mysterious cgraph abort.
	* tree-optimize.c (tree_rest_of_compilation): Save DECL_SAVED_INSNS.
	* tree-pretty-print.c (dump_generic_node): Print static chain
	and nonlocal label.
	* tree-simple.h (declare_tmp_vars): Declare.
	(lower_nested_functions): Declare.
	* tree-ssa-dom.c (propagate_value): Avoid sharing problems.
	* tree-ssa-operands.c (get_expr_operands): Walk static chain
	field of call_expr.
	* tree.def (CALL_EXPR): Add static chain operand.
	* tree.h (NONLOCAL_LABEL): Remove.
	(TDI_nested): New.
	* varasm.c (TRAMPOLINE_ALIGNMENT): Remove.
	(initial_trampoline): Move from function.c.
	(assemble_trampoline_template): Set and return it.
	(trampolines_created): Move from function.c.

2004-02-16  Steven Bosscher  <stevenb@suse.de>

	* tree-flow.h (cleanup_control_expr_graph): Don't declare here.
	* tree-cfg.c (cleanup_control_expr_graph): Make static.
	(find_edge_taken_cond_expr): Return an edge if the true and false
	edges of a branch lead to the same basic block.

2004-02-13  Diego Novillo  <dnovillo@redhat.com>

	* tree-phinodes.c (resize_phi_node): Do not use ggc_realloc to
	allocate a new PHI node.

2004-02-12  Diego Novillo  <dnovillo@redhat.com>

	* tree-flow.h (kill_redundant_phi_nodes): Remove declaration.
	* tree-optimize.c (init_tree_optimization_passes): Add
	pass_redundant_phi after DOM and CCP.
	(execute_todo): Do not call kill_redundant_phi_nodes.
	* tree-pass.h (TODO_redundant_phi): Remove.
	Update all users.
	Adjust values for all the other TODO_* entries.
	(pass_redundant_phi): Declare.
	* tree-ssa.c (replace_immediate_uses): Call mark_new_vars_to_rename
	if a pointer was replaced.
	(kill_redundant_phi_nodes): Make static.
	(pass_redundant_phi): Define.

2004-02-12  Dale Johannesen  <dalej@apple.com>

	* Makefile.in (OBJS-common): Add rtl-profile.o, tree-profile.o.
	(profile.o): Add tree-flow.h dependency.
	(rtl-profile.o): New rule.
	(tree-profile.o): New rule.
	(GTFILES): Add tree-profile.c, rtl-profile.c.
	* basic-block.h (flow_call_edges_add): Remove.
	* cfganal.c (need_fake_edge_p): Move to cfgrtl.c.
	(flow_call_edges_add): Move to cfgrtl.c.
	* cfghooks.c: (block_ends_with_call_p): New.
	(block_ends_with_condjump_p): New.
	(flow_call_edges_add): New.
	* cfghooks.h: (struct cfg_hooks): add block_ends_with_call_p,
	block_ends_with_condjump_p, flow_call_edges_add.
	(block_ends_with_call_p): New declaration.
	(block_ends_with_condjump_p): New declaration.
	(flow_call_edges_add): New declaration.
	* cfgrtl.c (rtl_block_ends_with_call_p): New.
	(rtl_block_ends_with_condjump_p): New.
	(need_fake_edge_p): Moved from cfganal.c.
	(rtl_flow_call_edges_add): Moved from cfganal.c (flow_call_edges_add).
	(rtl_cfg_hooks): Add rtl_block_ends_with_call_p,
	rtl_block_ends_with_condjump_p, rtl_flow_call_edges_add.
	(cfg_layout_rtl_cfg_hooks): Ditto.
	* common.opt (ftree-based-profiling): New.
	* coverage.c (tree_ctr_tables): New.
	(coverage_counter_alloc): Use it.
	(build_ctr_info_value): Ditto.
	(coverage_counter_ref): Ditto.  Rename to rtl_coverage_counter_ref.
	(tree_coverage_counter_ref): New.
	* coverage.h (coverage_counter_ref): Remove declaration.
	(rtl_coverage_counter_ref): New declaration.
	(tree_coverage_counter_ref): New declaration.
	* opts.c (OPT_ftree_based_profiling): New.
	* profile.c: Include cfghooks.h, tree-flow.h.
	(profile_hooks): New.
	(profile_dump_file): New.
	(instrument_edges): Use hooks instead of RTL-specific code.
	(instrument_values): Ditto.
	(get_exec_counts): Ditto.
	(compute_branch_probabilities): Ditto.
	(compute_value_histograms): Ditto.
	(branch_prob): Ditto.
	(find_spanning_tree): Ditto.
	(end_branch_prob): Ditto.
	(gen_edge_profiler): Move to rtl-profile.c (rtl_gen_edge_profiler).
	(gen_interval_profiler): Ditto (rtl_gen_interval_profiler).
	(gen_pow2_profiler): Ditto (rtl_gen_pow2_profiler).
	(gen_one_value_profiler): Ditto (rtl_gen_one_value_profiler).
	(tree_register_profile_hooks): New.
	(rtl_register_profile_hooks): New.
	* rtl-profile.c: New file.
	* rtl.h (init_branch_prob): Move declaration to value-prof.h.
	(end_branch_prob): Ditto.
	(branch_prob): Ditto.
	* toplev.c (flag_tree_based_profiling): New.
	(f_options): Add -ftree-based-profiling.
	(compile_file): Register rtl-based CFG and profiling hooks.
	(rest_of_compilation): Do rtl-based profiling only when
	!flag_tree_based_profiling.  Register rtl-based profiling hooks.
	(process_options): Sorry for -ftree-based-profiling plus
	-ftest-coverage or -fprofile-values.
	* toplev.h (flag_tree_based_profiling): New.
	* tree-cfg.c (tree_block_ends_with_call_p): New.
	(tree_block_ends_with_condjump_p): New.
	(need_fake_edge_p): New.
	(tree_flow_call_edges_add): New (largely from flow_call_edges_add
	in cfganal.c).
	(tree_cfg_hooks): Add tree_block_ends_with_call_p,
	tree_block_ends_with_condjump_p, tree_flow_call_edges_add.
	* tree-optimize.c (init_tree_optimization_passes):
	Add pass_tree_profile.
	* tree-pass.h: Ditto.
	* tree-profile.c: New file.
	* value-prof.c (value_prof_hooks): New.
	(find_values_to_profile): Rename to rtl_find_values_to_profile.
	Move rtl-specific bits in from branch_prob.
	(value_profile_transformations): Rename to
	rtl_value_profile_transformations.
	(struct value_prof_hooks): New.
	(rtl_value_prof_hooks): New.
	(rtl_register_value_prof_hooks): New.
	(tree_find_values_to_profile): New stub.
	(tree_value_profile_transformations): New stub.
	(tree_value_prof_hooks): New stub.
	(tree_register_value_prof_hooks): New stub.
	(find_values_to_profile): New.
	(value_profile_transformations): New.
	* value-prof.h: Add multiple inclusion guard.
	(struct histogram_value): Change rtx fields to void *.
	(rtl_register_value_prof_hooks): New declaration.
	(tree_register_value_prof_hooks): New declaration.
	(find_values_to_profile): New declaration.
	(free_profiled_values): New declaration.
	(value_profile_transformations): New declaration.
	(struct profile_hooks): New declaration.
	(init_branch_prob): Declaration moved from rtl.h.
	(branch_prob): Declaration moved from rtl.h.
	(end_branch_prob): Declaration mooved from rtl.h.
	(tree_register_profile_hooks): New declaration.
	(rtl_register_profile_hooks): New declaration.
	(tree_profile_hooks): New declaration.
	(rtl_profile_hooks): New declaration.
	* doc/invoke.texi: Document -ftree-based-profiling.

2004-02-12  Jeff Law  <law@redhat.com>

	* domwalk.c (walk_dominator_tree): Move statement walking from
	clients into here.  Walk statements in forward or backward order
	as requested by the client.  Walk either the dominator tree or
	the post-dominator tree as requested by the client.
	* domwalk.h (dom_walk_data): Add two fields to control direction of
	statement walk and dominator vs post-dominator tree walk.  Add
	BSI argument to the per-statement callbacks.
	* tree-ssa-dom.c (optimize_stmt): Update prototype so that it can
	be directly used as a callback for the dominator tree walker.
	Update stmts_to_rescan here.
	(tree_ssa_dominator_optimize): Initialize new fields in the dominator
	walker structure.  Use optimize_stmt instead of dom_opt_walk_stmts
	for statement callback.
	(dom_opt_walk_stmts): Kill.  No longer used.
	* tree-ssa.c (mark_def_sites): Update prototype so that it can be
	called as the per-statement callback.  No longer walk statements here.
	(mark_def_sites_initialize_block): New.
	(rewrite_stmt): Update prototype so that it can be called as the
	per-statement callback.
	(rewrite_walk_stmts): Kill.  No longer used.
	(rewrite_into_ssa): Initialize new fields in the dominator walker
	structure.  Use rewrite_stmt instead of rewrite_walk_stmts.  Add
	mark_def_sites_initialize_block callback.

2004-02-12  Steven Bosscher  <stevenb@suse.de>

	* doc/cfg.texi: New file.
	* doc/ggcint.texi: Include it.  Add a new chapter.

2004-02-11  Jeff Law  <law@redhat.com>

	* Makefile.in (OBJS-common): Add tree-ssa-forwprop.o
	(tree-ssa-forwprop.o): Add dependencies.
	* timevar.def (TV_TREE_FORWPROP): New timevar.
	* tree-optimize.c (init_tree_optimization_passes): Link in
	the forward propagation pass.
	* tree-pass.h (pass_forwprop): Declare.
	* tree-ssa-forwprop.c: New file with forward propagation pass.
	* doc/invoke.texi: Document dump for forward propagation pass.

2004-02-11  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa.c (rewrite_out_of_ssa): Don't use coalesce list until new
	bug resolved.

2004-02-11  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.c (compare_pairs): New.  Coalesce list cost function.
	(sort_coalesce_list): Use qsort() to sort list by cost.
	(coalesce_tpa_members): Use correct partition representatives.  Add more
	debug information.  Allow coalesce by list, root_var, or both.
	(tpa_dump): Show partition index.
	* tree-ssa-live.h (SSANORM_COALESCE_PARTITIONS): New flag.
	(SSANORM_USE_COALESCE_LIST): New flag.
	* tree-ssa.c (create_temp): Don't mark as used when created.
	(coalesce_ssa_name): Create coalesce list if requested.  Add more
	debug output.
	(assign_vars): Add additional debug info.
	(remove_ssa_form): Perform TER after assign_vars().
	(rewrite_vars_out_of_ssa): Pass coalesce partitions flag to
	remove_ssa_form.
	(rewrite_out_of_ssa): Add coalesce list flag to remove_ssa_form call.

2004-02-10  Jeff Law  <law@redhat.com>

	* Makefile.in (OBJS-common): Add tree-ssa-phiopt.o
	(tree-ssa-phiopt.o): Add dependencies.
	* timevar.def (TV_TREE_PHIOPT): New timevar.
	* tree-cfg.c (extract_true_false_edges_from_block): Moved here from
	tree-ssa-dom.c.
	(tree_verify_flow_info): Use extract_true_false_edges_from_block.
	* tree-flow.h (extract_true_false_edges_from_block): Declare.
	* tree-ssa-dom.c (extract_true_false_edges_from_block): Moved into
	tree-cfg.c.
	(get_eq_expr_value): Improve type check.
	* tree-optimize.c (init_tree_optimization_passes): Link in
	phiopt pass.
	* tree-pass.h (pass_phiopt): Declare.
	* tree-ssa-phiopt.c: New file with PHI node optimization pass.
	* doc/invoke.texi: Document dump for PHI node optimization.

2004-02-10  Richard Henderson  <rth@redhat.com>

	* tree-sra.c (lookup_scalar): Handle unnamed fields.

2004-02-10  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (OBJS-common): Add tree-ssa-alias.o.
	(tree-ssa-alias.o): New rule.
	(tree-ssa-operands.o): Add dependency on $(TIMEVAR_H) and tree-pass.h
	(gt-tree-dfa.h): Remove.
	* timevar.def (TV_TREE_OPS): Rename from unused entry TV_TREE_DFA.
	* tree-ssa-alias.c: New file.
	* tree-dfa.c (struct alias_stats_d, alias_stats, dump_alias_stats,
	may_alias_p, add_may_alias, global_var, aliases_computed_p,
	compute_may_aliases): Move to tree-ssa-alias.c.
	(struct walk_state): Remove fields 'is_asm_expr' and 'num_calls'.
	Update all users.
	(compute_alias_sets, create_memory_tags, may_access_global_mem_p,
	get_memory_tag_for, promote_call_clobbered_vars,
	find_addressable_vars): Remove.
	(call_clobbered_vars): Move to tree-ssa-alias.c and convert to
	bitmap.
	(find_referenced_vars): Move logic to create .GLOBAL_VAR to
	tree-ssa-alias.c.
	(create_ssa_name_ann): New.
	(dump_variable): Rearrange.
	(dump_dfa_stats): Do not show the number of call clobbered
	variables.
	(find_vars_r): Do not try to determine if an assignment my access
	global memory.
	(add_referenced_var): Remove hacks to establish global memory
	dependencies.
	If the variable needs to live in memory mark it call-clobbered.
	* tree-flow-inline.h (ssa_name_ann): New.
	(get_ssa_name_ann): New.
	(set_may_alias_global_mem): Remove.
	(may_alias_global_mem_p): Remove.
	(set_may_point_to_global_mem): Remove.
	(may_point_to_global_mem_p): Remove.
	(is_call_clobbered): New
	(mark_call_clobbered): New
	(mark_non_addressable): New
	* tree-flow.h (enum tree_ann_type): Add SSA_NAME_ANN.
	(enum mem_tag_kind): Declare.
	(struct var_ann_d): Remove fields 'is_call_clobbered',
	'may_alias_global_mem' and 'may_point_to_global_mem'.
	Replace bitfield 'mem_tag' with enum bitfield 'mem_tag_kind'.
	Rename field 'mem_tag' to 'type_mem_tag'.
	(struct stmt_ann_d): Change type of field 'addresses_taken' to a
	bitmap.  Update all users.
	(struct ssa_name_ann_d): Declare.
	(union tree_ann_d): Add field 'ssa_name'.
	(ssa_name_ann_t): New type.
	(struct bb_ann_d): Add field 'has_escape_site'.
	(num_call_clobbered_vars): Remove.
	(call_clobbered_var): Remove.
	(call_clobbered_vars): Change to bitmap.
	(dump_points_to_info): Declare.
	(debug_points_to_info): Declare.
	(walk_use_def_chains_fn): New type.
	(walk_use_def_chains): Declare.
	(is_call_clobbered): Declare.
	(mark_call_clobbered): Declare.
	* tree-simple.c (needs_to_live_in_memory): Move to tree.c.
	(is_gimple_non_addressable): Update comment.
	(is_gimple_call_clobbered): Remove.
	(get_call_expr_in): New.
	(get_base_var): Rename from get_base_symbol.  Update all callers.
	Don't strip SSA_NAME wrappers.
	(get_base_decl): New.
	(get_base_address): New.
	* tree-simple.h (is_gimple_call_clobbered): Remove.
	(needs_to_live_in_memory): Remove.
	(get_base_decl): Declare.
	(get_base_var): Declare.
	(get_base_address): Declare.
	* tree-ssa-dce.c (need_to_preserve_store): Reduce to calling
	needs_to_live_in_memory.
	* tree-ssa-operands.c: Include tree-pass.h and timevar.h
	(get_stmt_operands): Push/pop TV_TREE_OPS time var.
	Call mark_call_clobbered for asms that store to memory.
	(get_expr_operands): When adding operands for INDIRECT_REF
	expressions, use flow-sensitive aliasing, if available.
	Assume that malloc-like function calls won't clobber.
	(add_call_clobber_ops):
	(add_call_read_ops):
	* tree-ssa.c (rewrite_into_ssa): If any variable in vars_to_rename
	is a pointer, invalidate all name memory tags.
	(create_temp): Call is_call_clobbered and mark_call_clobbered.
	(walk_use_def_chains_1): New.
	(walk_use_def_chains): New.

	* tree.c (needs_to_live_in_memory): New.
	* tree.h (DECL_NEEDS_TO_LIVE_IN_MEMORY_INTERNAL): Define.
	(struct tree_decl): Add bitfield 'needs_to_live_in_memory'.
	Update unused bits comment.
	(needs_to_live_in_memory): Declare.

	* tree-simple.h (get_call_expr_in): Declare.
	* tree-sra.c (scalarize_stmt): Call get_call_expr_in when handling
	function calls.
	* tree-ssa-ccp.c (likely_value): Likewise.

	* params.def (PARAM_MAX_CLOBBERED_VARS_GLOBAL_VAR): Remove.
	(PARAM_MAX_CALLS_GLOBAL_VAR): Remove.
	(PARAM_GLOBAL_VAR_THRESHOLD): Define.
	(PARAM_MAX_ALIAS_SET_SIZE): Define.
	Update all users.
	* params.h (MAX_CALLS_FOR_GLOBAL_VAR): Remove.
	(MAX_CLOBBERED_VARS_FOR_GLOBAL_VAR): Remove.
	(GLOBAL_VAR_THRESHOLD): Define.
	(MAX_ALIAS_SET_SIZE): Define.

2004-02-09  Richard Henderson  <rth@redhat.com>

	* langhooks.h (lang_hooks_for_functions): Add missing_noreturn_ok_p.
	* langhooks-def.h, c-lang.c, objc/objc-lang.c
	(LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P): New.
	* c-objc-common.c (c_missing_noreturn_ok_p): Return bool.
	(c_objc_common_init): Don't set lang_missing_noreturn_ok_p.
	* c-tree.h (c_missing_noreturn_ok_p): Update decl.
	* flow.c (lang_missing_noreturn_ok_p): Remove.

	* flow.c (check_function_return_warnings): Move to tree-cfg.c.
	* toplev.c (rest_of_compilation): Don't call it.
	* tree-cfg.c (execute_warn_function_return): Move from flow.c,
	rename, update for tree vs rtl.
	(pass_warn_function_return): New.
	* tree-pass.h (pass_warn_function_return): Declare it.
	* tree-optimize.c (init_tree_optimization_passes): Run it.

	* function.h (struct function): Remove x_clobber_return_insn.
	* function.c (free_after_compilation): Don't set it.
	(expand_function_end): Likewise.

2004-02-09  Richard Henderson  <rth@redhat.com>

	Revert:
	2004-02-06  Richard Henderson  <rth@redhat.com>
	* tree-ssa-dom.c (record_equivalences_from_phis): Use
	record_const_or_copy.
	(record_equivalences_from_stmt): Likewise.  Replace
	block_avail_exprs_p and block_nonzero_vars_p args with bd.

2004-02-09  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (get_eq_expr_value): Improve handling of boolean
	conditions.

	* domwalk.c (walk_dominator_tree): Completely lose PARENT argument.
	Callers updated.  No longer pass PARENT to callbacks.
	* domwalk.h (struct dom_walk_data): Corresponding changes.
	* tree-ssa-dom.c: Likewise.
	* tree-ssa.c: Likewise.

	* domwalk.c (walk_dominator_tree): Change last argument to be the
	parent block in the dominator tree rather than the last statement
	in the parent block in the dominator tree.  Similarly in all the
	callbacks.
	* domwalk.h (struct dom_walk_data): Update callback prototypes.
	* tree-ssa-dom.c: Corresponding changes.
	* tree-ssa.c: Likewise.

	* tree-ssa-dom.c (redirect_edges_and_update_ssa_graph): Break out
	of tree_ssa_dominator_optimize.  If the out-of-ssa pass creates
	new variables, then invalidate some requested jump threads.

2004-02-08  Richard Henderson  <rth@redhat.com>

	* flow.c (regno_uninitialized): Remove.
	* output.h (regno_uninitialized): Remove.
	* function.c (setjmp_vars_warning): Rename from
	uninitialized_vars_warning, remove uninitialized vars warning.
	* toplev.c (rest_of_handle_life): Update to match.
	* tree.h (setjmp_vars_warning): Likewise.

	* tree-sra.c (lookup_scalar): Set DECL_NAME to something descriptive.

	* tree-ssa.c (warn_uninit): New.
	(warn_uninitialized_var, warn_uninitialized_phi): New.
	(execute_early_warn_uninitialized): New.
	(execute_late_warn_uninitialized): New.
	(gate_warn_uninitialized): New.
	(pass_early_warn_uninitialized): New.
	(pass_late_warn_uninitialized): New.
	* tree-pass.h (pass_early_warn_uninitialized): New.
	(pass_late_warn_uninitialized): New.
	* tree-optimize.c (init_tree_optimization_passes): Add them.

2004-02-08  Richard Henderson  <rth@redhat.com>

	* cppexp.c (append_digit): Rearrange unsignedp/overflow setting.
	(eval_token, num_binary_op, num_part_mul, num_div_op): Likewise.
	* ra-rewrite.c (rewrite_program2): Zero info.
	* reload.c (decompose): Zero val.
	* tree-ssa-ccp.c (visit_phi_node): Zero phi_val.const_val.

2004-02-07  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (save_body): Clone the parm decl correctly.

	* cgraph.c: Add introductionary comment.
	(cgraph_remove_node): Release DECL_SAVED_INSNS too.
	* cgraphunit.c: Likewise.
	(cgraph_finalize_function): Release DECL_SAVED_INSNS of external function.
	(decl_expand_function): Release DECL_SAVED_INSNS/body/tree.
	(cgraph_remove_unreachable_nodes): Likewise; guard cgraph verification.

2004-02-06  Richard Henderson  <rth@redhat.com>

	* common.opt (fdisable-tree-ssa): Remove.
	* flags.h (flag_disable_tree_ssa): Remove.
	* toplev.c (flag_disable_tree_ssa): Remove.
	(f_options): Don't set it.
	* opts.c (common_handle_option): Likewise.
	* doc/invoke.texi (fdisable-tree-ssa): Remove.

2004-02-06  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (record_equivalences_from_phis): Use
	record_const_or_copy.
	(record_equivalences_from_stmt): Likewise.  Replace
	block_avail_exprs_p and block_nonzero_vars_p args with bd.

2004-02-06  Andrew Pinski  <pinskia@physics.uc.edu>

	PR middle-end/13127
	* tree-inline.c (declare_return_variable): Set the no warning bit
	on the variable created for the return value.

2004-02-06  Richard Henderson  <rth@redhat.com>

	* tree-pretty-print.c (dump_generic_node): Render NON_LVALUE_EXPR.

	* tree-ssa-dom.c (local_fold): New.
	(thread_across_edge, simplify_rhs_and_lookup_avail_expr,
	find_equivalent_equality_comparison): Use it.

2004-02-06  Andrew Pinski  <pinskia@physics.uc.edu>

	PR c/13863
	* c-common.c (c_decl_uninit_1): Remove.
	(c_decl_uninit): Remove.
	* c-common.h (c_decl_uninit): Remove prototype.
	* c-lang.c (LANG_HOOKS_DECL_UNINIT): Delete.
	* objc/objc-lang.c (LANG_HOOKS_DECL_UNINIT): Delete.
	* c-simplify.c (gimplify_decl_stmt): Set TREE_NO_WARNING
	on the decl where the initial is itself.
	* function.c (uninitialized_vars_warning): Remove old comment
	and check for DECL_INITIAL, replace with a check of TREE_NO_WARNING
	and do not call the langhook.
	* langhooks-def.h (LANG_HOOKS_DECL_UNINIT): Remove.
	(LANG_HOOKS_INITIALIZER): Remove usage of LANG_HOOKS_DECL_UNINIT.
	* langhooks.c (lhd_decl_uninit): Remove.
	* langhooks.h (lhd_decl_uninit): Remove prototype.

2004-02-05  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (record_const_or_copy_1): New.
	(record_const_or_copy): New.
	(thread_across_edge): Use it.
	(dom_opt_finalize_block): Likewise.  Tidy.
	(record_equality): Split out from ...
	(record_equivalences_from_incoming_edge): ... here.

2004-02-05  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Allow
	mixing PLUS and MINUS when folding operations.

2004-02-05  Andrew Macleod  <amacleod@redhat.com>

	* tree-pretty-print.c (dump_bb_header):  Allow TDF_SLIM printing.
	(dump_bb_end):  Allow TDF_SLIM printing.
	(dump_generic_bb_buff):  Add flags parameter to dump_bb_end.

2004-02-05  Jan Hubicka  <jh@suse.cz>

	* alias.c (find_base_term, get_addr):  Do not dereference NULL
	pointer when all VALUE's locations has been invalidated.
	(rtx_equal_for_memref_p): Simplify checking of VALUEs.

2004-02-04  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c (andersen_init): Reorder/Redo code so that we
	actually free the memory in intraprocedural mode.
	(andersen_cleanup): Ditto.

2004-02-04  Richard Henderson  <rth@redhat.com>

	* tree-ssa-ccp.c (get_value, visit_phi_node,
	visit_assignment, dump_lattice_value): Tidy.
	(evaluate_stmt): Don't do debug dump here.
	(def_to_undefined): Merge into set_lattice_value.
	(def_to_varying): Likewise, but retain as a wrapper.
	(set_lattice_value): Tidy.  Emit correct debug info.
	(replace_uses_in): Remove strlen hacks.
	(execute_fold_all_builtins): Fix DECL_BUILT_IN comparison.
	Force folding of BUILT_IN_CONSTANT_P.

2004-02-04  Richard Henderson  <rth@redhat.com>

	* builtins.c (fold_builtin_expect): New.
	(fold_builtin_1): Call it.

2004-02-04  Jeff Law  <law@redhat.com>

	* jump.c (duplicate_loop_exit_test): Allow copying of the loop
	exit test even if we do not find the LOOP_END note.

	* domwalk.c: Update comments.

2004-02-04  Brian Booth  <bbooth@redhat.com>

	PR opt/13755
	* tree-dfa.c (compute_alias_sets): set rename flag for variables
	aliased by GLOBAL_VAR.

2004-02-04  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (simplify_switch_and_lookup_avail_expr): New.
	(eliminate_redundant_computations): Call it.

2004-02-03  Richard Henderson  <rth@redhat.com>

	PR opt/13869
	* tree-cfg.c (cfg_remove_useless_stmts_bb): Correct handling of
	boolean variables in COND_EXPR_COND.

2004-02-03  Richard Henderson  <rth@redhat.com>

	PR middle-end/13325
	* builtins.c (fold_builtin_1): Rename from fold_builtin.
	(fold_builtin): New.
	* c-simplify.c (gimplify_expr_stmt): Check TREE_NO_WARNING.
	* stmt.c (expand_expr_stmt_value): Likewise.
	* tree.h (struct tree_common): Add nowarning_flag.
	(TREE_NO_WARNING): New.
	(TREE_NO_UNUSED_WARNING): Remove.
	* c-typeck.c (build_unary_op): Use TREE_NO_WARNING instead.
	* stmt.c (warn_if_unused_value): Likewise.

2004-02-03  Steven Bosscher  <stevenb@suse.de>

	* tree-ssa-dce.c: Partial rewrite.  The old DCE is now called
	`conservative'.  The more aggressive algorithm uses control
	dependence and is called `aggressive' or cd-dce.
	* timevar.def (TV_TREE_DCE): Rename.
	(TV_TREE_CD_DCE, TV_CONTROL_DEPENDENCES): New timevars.
	* tree-pass.h: Declare extern pass_cd_dce.
	* tree-optimize.c (init_tree_optimization_passes): Replace
	the final DCE pass with a CD-DCE pass.

2004-02-01  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_mark_inline_edge): Fix insertion to
	cgraph_inline_hash.

2004-01-30  Frank Ch. Eigler  <fche@redhat.com>

	* common.opt: Add support for -fmudflapth, -fmudflapir.
	* invoke.texi: Document them.
	* opts.c: Ditto.
	* flags.h: Add new flags flag_mudflap_threads, _ignore_reads.
	* toplev.c: Initialize new flags.  Remove redundant code from
	lang_independent_options[].
	* tree-mudflap.c (*): Support new flag_mudflap_threads encoding.
	(mf_xform_derefs_1): Support flag_mudflap_ignore_reads option.
	* c-mudflap.c (mflang_flush_calls): Mark static ctor TREE_USED.

2004-01-30  Ian Lance Taylor  <ian@wasabisystems.com>

	* gengtype-yacc.y (bitfieldlen): Add empty action.

2004-01-30  Diego Novillo  <dnovillo@redhat.com>

	* configure.ac: Move configuration for libbanshee and
	libgmp from configure.in.

2004-01-30  Richard Henderson  <rth@redhat.com>

	PR opt/13524
	* gengtype-yacc.y (struct_fields): Accept unnamed bitfields.
	(bitfieldlen): Split from ...
	(bitfieldopt): ... here.
	* gimplify.c (mark_not_gimple): Remove.
	(gimplify_call_expr): Don't ignore BUILT_IN_MD.
	* tree-dfa.c (struct walk_state): Remove is_not_gimple.
	(find_referenced_vars): Don't look for TREE_NOT_GIMPLE.
	(find_vars_r, add_referenced_var): Likewise.
	* tree-ssa-operands.c (get_stmt_operands, get_expr_operands): Likewise.
	* tree-simple.h (mark_not_gimple): Remove.
	* tree.h (struct tree_common): Remove not_gimple_flag.
	(TREE_NOT_GIMPLE): Remove.

2004-01-29  Jason Merrill  <jason@redhat.com>

	PR c++/13865
	* c-simplify.c (gimplify_for_stmt): Reorganize to fix cleanups.

2004-01-29  Richard Henderson  <rth@redhat.com>

	PR c++/13543
	* tree-inline.c (initialize_inlined_parameters): Register the
	substitute reference also.

2004-01-29  Richard Henderson  <rth@redhat.com>

	* tree-inline.c (gimple_expand_calls_inline): Look inside
	RETURN_EXPR.

	* tree-pretty-print.c (dump_generic_node): If TDF_DETAILS, dump
	both name and uid.

2004-01-29  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* cfg.c (unlink_block): Reset prev_bb and next_bb.

2004-01-29  Jeff Law <law@redhat.com>
	    Andrew MacLeod <amacleod@redhat.com>

	* tree-ssa-live.h (tpa_next_partition): Correctly handle compressed
	elements.
	* tree-ssa.c (coalesce_ssa_name): New argument, flags.  Callers
	updated.  Test SSANORM_COMBINE_TEMPS in flags rather than
	flag_tree_combine_temps.
	(coalesce_vars): Either operand of a copy might not have a
	partition when rewriting a subset of the variables out of SSA form.
	(rewrite_vars_out_of_ssa): Honor -ftree-combine-temps by passing
	in SSANORM_COMBINE_TEMPS in flags argument to remove_sas_form..

2004-01-29  Dale Johannesen  <dalej@apple.com>

	* Makefile.in (OBJS-common):  Move tree-nomudflap.o...
	(OBJS-archive): ...to here, and remove duplicate tree-optimize.o.

2004-01-28  Richard Henderson  <rth@redhat.com>

	PR middle-end/13898
	* gimplify.c (gimplify_init_constructor): Invoke
	lhd_set_decl_assembler_name on the now-static variable.

2004-01-28  Richard Henderson  <rth@redhat.com>

	PR opt/13798
	* expr.c (is_zeros_p): Remove.  Change all callers to use
	initializer_zerop.
	(categorize_ctor_elements_1, categorize_ctor_elements): New.
	(count_type_elements): New.
	(mostly_zeros_p): Use them.
	* gimplify.c (tmp_var_id_num): Split out from create_tmp_var_raw.
	(create_tmp_var_name): Likewise.
	(gimplify_init_constructor): Drop constructors to readonly memory
	as indicated by categorize_ctor_elements and can_move_by_pieces.
	* tree.c (initializer_zerop): Handle VECTOR_CST.  Don't check
	AGGREGATE_TYPE_P for CONSTRUCTOR.
	* tree.h (categorize_ctor_elements): Declare.
	(count_type_elements): Declare.
	* Makefile.in (gimplify.o): Update dependencies.
	(GTFILES): Add gimplify.c.

2004-01-27  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mx_register_decls): Support VLAs.
	(mf_xform_derefs_1): Disable checking shortcut for VLAs.
	* c-simplify.c (gimplify_decl_stmt): Add mudflap xref comment.
	* gimplify.c (gimplify_bind_expr): Ditto.

2004-01-27  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c:  Add more comments describing SSAPRE and
	the various functions.
	(generate_expr_as_of_bb): Use PRED, a basic block argument, instead of
	j, the index of that bb.
	(generate_vops_as_of_bb): Ditto.
	(insert_occ_in_preorder_dt_order): Rename to
	create_and_insert_occ_in_preorder_dt_order.

2004-01-27  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (rename_1): Add some more comments.

2004-01-25  Andrew Pinski  <pinskia@physics.uc.edu>

	PR c/13748
	* c-decl.c (finish_function): Do not pass
	the function on to optimizers if there was an error.

2004-01-23  Richard Henderson  <rth@redhat.com>

	PR opt/12941
	* combine.c (SHIFT_COUNT_TRUNCATED): Provide default value.
	(simplify_comparison): Don't simplify (eq (zero_extract c 1 r) 0)
	if SHIFT_COUNT_TRUNCATED is set.

2004-01-21  Richard Henderson  <rth@redhat.com>

	PR c/11267
	* c-decl.c (c_finalize): New.
	(finish_function): Use it.  Genericize and finalize only non-nested
	functions.  Register nested functions with cgraph.
	* c-simplify.c: Include cgraph.h.
	(c_genericize): Genericize nested functions.
	* gimplify.c (gimplify_expr): Use DECL_SAVED_INSNS to access
	the struct function for the context.
	* Makefile.in (c-simplify.o): Update dependencies.

2004-01-21  Steven Bosscher  <stevenb@suse.de>

	PR opt/13767
	* tree-cfg.c (simple_goto_p): Remove NONLOCAL_LABEL check.

2004-01-21  Dale Johannesen  <dalej@apple.com>

	* tree-dfa.c: Fix comment.

2004-01-21  Richard Henderson  <rth@redhat.com>

	PR opt/13681
	* tree-ssa-operands.c (get_expr_operands): Handle (&x + c).

	* tree-ssa-ccp.c (maybe_fold_offset_to_component_ref): Handle
	flexible array members and lookalikes.

2004-01-21  Dale Johannesen  <dalej@apple.com>

	* tree-ssa-dom.c (cprop_into_stmt):  Add convert call
	to prevent type mismatches.

2004-01-21  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (load_modified_phi_result): PARM_DECL is okay
	to not have a defbb.
	(rename_1): Add a comment.

2004-01-21  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (find_equivalent_equality_comparison): Treat
	CONVERT_EXPRs just like NOP_EXPRs.
	(record_equivalences_from_stmt): Similarly.
	(thread_across_edge): Fix formatting goof.

	* tree-ssa-dom.c (thread_across_edge): Remove bogus restriction
	which prevents threading around to the top of a loop.

	* tree-ssa-dom.c (thread_across_edge): Handle SWITCH_EXPRs in the
	target block in addition to COND_EXPRs.

	* tree-ssa-dom.c (thread_across_edge): Create equivalences for
	PHIs before looking at the statements in the destination
	block.

2004-01-20  Roger Sayle  <roger@eyesopen.com>

	* fold-const.c (fold_convert): Rename to fold_convert_const.
	(fold_convert_const): Change arguments to take a tree_code,
	a type and the operand/expression to be converted.  Return
	NULL_TREE if no simplification is possible.  Add support for
	FIX_CEIL_EXPR and FIX_FLOOR_EXPR in addition to FIX_TRUNC_EXPR.
	(fold): Handle FIX_CEIL_EXPR and FIX_FLOOR_EXPR.
	Adjust call to fold_convert to match new fold_convert_const.
	Avoid modifying the tree passed to fold in-place.
	(nondestructive_fold_unary_to_constant): Likewise, simplify
	call to fold_convert to match new fold_convert_const.

2004-01-20  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c (andersen_op_assign): Update
	prototype. Make this handle &x in the operands using
	the addrargs parameter.
	(andersen_init): Turn off ip_partial until variables
	aliasing variables in other functions is resolved.
	(andersen_add_var): Use newly renamed alias_var_new_with_aterm.
	Fix comment.
	(andersen_add_var_same): Ditto.
	(andersen_function_call): Use ip_partial, not flag_unit_at_a_time.
	* tree-alias-common.c (get_values_from_constructor): Add bitmap
	and int * arguments. Used to mark operands that we are taking
	address of.
	(get_alias_var_decl): We should never see FIELD_DECL's right now.
	(intra_function_call): Reverse ordering for slightly faster
	projection merging.
	(find_op_of_decl): New function.
	(find_func_aliases): Use it.
	Comment x = foo.y case.
	Move get_alias_var_decl of arguments so we only call it if
	necessary.
	Handle address of arguments in operations.
	(create_fun_alias_var): tvar->var.
	Set context of fakeargs.
	Set context of fakedecls.
	Set DECL_PTA_ALIASVAR of RETURN_DECL's.
	(create_fun_alias_var_ptf): tvar->var.
	Set context of fakedecls.
	(create_alias_vars): Only create alias vars for globals
	with DECL_INITIAL's.
	* tree-alias-common.h (struct tree_alias_ops):
	Update op_assign arguments.
	(may_alias): Fix comment.
	(same_points_to_set): Ditto.
	(empty_points_to_set): Ditto.
	* tree-alias-type.h: Rename alias_tvar_new_with_aterm
	-> alias_var_new_with_aterm.
	* tree-alias-type.c: Ditto.

2004-01-20  Richard Henderson  <rth@redhat.com>

	* tree-sra.c (get_scalar_for_field): Validate field.
	(create_scalar_copies): Iterate over rhs fields too.

2004-01-19  Dale Johannesen  <dalej@apple.com>

	* params.def:  Add PARAM_MAX_CALLS_GLOBAL_VAR and
	PARAM_MAX_CLOBBERED_VARS_GLOBAL_VAR.
	params.h:  Ditto.
	tree-dfa.c:  Use them.
	doc/invoke.texi:  Document them.

2004-01-19  Jeff Law  <law@redhat.com>

	* tree-ssa.c (insert_phi_nodes_for): Always use fully pruned
	SSA form.

	* tree-flow.h: Update copyright dates.
	(register_new_def): Declare.
	* tree-ssa-dom.c: Update copyright dates.
	Add tracking of current definition of each program variable just
	like we do when rewriting into SSA form.
	(get_value_for, set_value_for): Handle either an SSA_NAME or
	regular variable.
	(tree_ssa_dominator_optimize): Initialize and update CURRDEFS.
	If we thread through a block with real statements, the destination
	of those statements must be rewritten too.
	(thread_across_edge): Skip nop statements at the start of a
	block.
	(dom_opt_initialize_block_local_data): Clear block_defs
	appropriately.
	(record_equivalences_from_phis): Accept walk_data structure.
	Call register_new_def appropriately.
	(optimize_stmt): Call register_new_defs_for_stmt.
	(dom_opt_finalize_block): Restore CURRDEFS appropriately.
	(register_new_definitions_for_stmt): New.
	* tree-ssa.c: Update copyright dates.
	(register_new_def): No longer static.  Accept additional argument
	for the table to hold the new definition.  Callers updated.

	* gimplify.c: Update copyright dates.
	* tree-cfg.c: Likewise.
	* tree.h: Likewise.

	* tree-iterator.c, tree-iterator.c: Use GCC rather than GNU CC.
	* tree-ssa-pre.c, tree-ssa-live.h: Likewise.

2004-01-19  Daniel Berlin  <dberlin@dberlin.org>

	* timevar.def (TV_TREE_SPLIT_EDGES): New timevar.
	* tree-ssa-pre.c (split_critical_edges): Move from here
	(pass_pre): Add PROP_no_crit_edges as required.
	* tree-cfg.c (split_critical_edges): to here.
	(pass_split_crit_edges): New pass.
	* tree-optimize.c (tree_optimization_passes): Add NEXT_PASS
	(split_crit_edges).
	* tree-pass.h: Add PROP_no_crit_edges.
	(pass_split_crit_edges): Declared.

2004-01-19  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_build_check_statement_for): Tolerate
	incoming locus NULL pointer.

2004-01-18  Richard Henderson  <rth@redhat.com>

	* builtins.c (simplify_builtin_strcpy): Export.  Take strlen argument.
	(simplify_builtin_strncpy, simplify_builtin_strcmp): Similarly.
	(simplify_builtin_strncmp): Similarly.
	(simplify_builtin): Update to match.
	* expr.h (simplify_builtin_strcmp, simplify_builtin_strncmp,
	simplify_builtin_strcpy, simplify_builtin_strncpy): Declare.
	* tree-pass.h (pass_fold_builtins): New.
	* tree-optimize.c (init_tree_optimization_passes): Add it.
	* tree-ssa-ccp.c (ccp_fold_builtin): Handle BUILT_IN_STRCPY,
	BUILT_IN_STRNCPY, BUILT_IN_STRCMP, BUILT_IN_STRNCMP.
	(get_strlen): Don't cast to size_t.
	(execute_fold_all_builtins, pass_fold_builtins): New.

2004-01-19  Jan Hubicka  <jh@suse.cz>

	PR opt/13729
	* cgraphunit.c (cgraph_finalize_compilation_unit): Fix memory leak.
	(cgraph_remove_unreachable_nodes):  Do not mix analyzed and
	DECL_SAVED_TREE flags.

2004-01-18  Richard Henderson  <rth@redhat.com>

	* tree-sra.c (REALPART_INDEX, IMAGPART_INDEX): Remove.
	(sra_candidates, needs_copy_in): Use a bitmap.  Update all users.
	(struct sra_elt, sra_elt_hash, sra_elt_eq): New.
	(sra_map_size): Remove.
	(sra_map): Use a htab_t.
	(lookup_scalar): Update to match.
	(get_scalar_for_field, get_scalar_for_complex_part): Likewise.
	(scalarize_structure_assignment): Use annotate_all_with_locus.
	(csc_build_component_ref): Remove index argument.
	(csc_build_complex_part): Take tree_code, not index.
	(create_scalar_copies): Don't collect indicies.
	(emit_scalar_copies): New.
	(scalarize_modify_expr, scalarize_tree_list): Use it.
	(scalarize_return_expr): Likewise.
	(scalarize_structures): Simplify needs_copy_in iteration.
	(scalarize_call_expr): Use annotate_all_with_locus.
	(dump_sra_map_trav): Split from ...
	(dump_sra_map): ... here.  Update for hash table.
	(tree_sra): Update for new datastructures.

2004-01-18  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (dump_function_to_file): Move ";; Function" header ...
	* tree-optimize.c (execute_one_pass): ... here.

2004-01-17  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c: s@_typevar@_var@g, s@_TVAR@_VAR@g,
	s@_TYPEVAR@_VAR@g
	* tree-alias-common.h: Ditto
	* tree.h: Ditto
	* tree-alias-ander.c: Ditto
	* tree-alias-type.c: Ditto
	* tree-alias-type.h: Ditto

2004-01-17  Richard Henderson  <rth@redhat.com>

	* tree-complex.c (gimplify_val): Copy TREE_BLOCK.

	* tree-complex.c (gimplify_val): New.
	(extract_component, do_binop, do_unop): Use it.

2004-01-17  Richard Henderson  <rth@redhat.com>

	* tree-complex.c (expand_complex_operations_1): Fix RETURN_EXPR
	thinko in last change.

2004-01-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* cfghooks.c (split_block): Don't redirect edges.
	* cfgrtl.c (rtl_split_block): Do it here.
	* tree-cfg.c (tree_split_block): Ditto.

2004-01-17  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (verify_expr): Tidy.  Check COND_EXPR for boolean
	condition.

2004-01-17  Jan Hubicka  <jh@suse.cz>

	PR optimization/11761
	* Makefile.in: Remove tree-simple.c from GTYized files.
	* tree-dfa.c (find_addressable_vars): Parse nontrivial ADDR_EXPRs.
	(discover_nonconstant_array_refs_r): New static function.
	(discover_nonconstant_array_refs): New global function.
	* tree-flow.h (discover_nonconstant_array_refs): Declare.
	* tree-simple.c (types_checked, types_in_memory): Kill.
	(struct_needs_to_live_in_memory): Kill.
	(needs_to_live_in_memory): aggregates are safe.
	* tree-ssa.c (rewrite_out_of_ssa): Call the new function.

2004-01-17  Richard Henderson  <rth@redhat.com>

	PR opt/13718
	* tree-complex.c (expand_complex_comparison): Handle COND_EXPR.
	(expand_complex_operations_1): Likewise.

2004-01-17  Richard Henderson  <rth@redhat.com>

	* tree-sra.c (scalarize_tree_list): Take bitmap argument to
	avoid emitting duplicates.  Update all callers.

2004-01-17  Richard Henderson  <rth@redhat.com>

	PR opt/13718
	* tree-complex.c (expand_complex_comparison): New.
	(expand_complex_operations_1): Handle EQ_EXPR and NE_EXPR.

2004-01-16  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c (get_alias_var): Handle BIT_FIELD_REF.
	(find_func_aliases): Ditto.
	Update for fact that basic component_refs are no longer
	is_gimple_variable.
	(create_fun_alias_var): Set DECL_CONTEXT on our faked declarations.
	(pass_del_pta): PTA dumps info on delete, so it needs a name.

2004-01-16  Steven Bosscher  <stevenb@suse.de>

	* tree-optimize.c (init_tree_optimization_passes): Run DCE
	before the first dominator optimization pass.

2004-01-15  Brian Booth <bbooth@redhat.com>
	    Richard Henderson  <rth@redhat.com>

	* tree-sra.c (REALPART_INDEX, IMAGPART_INDEX): New.
	(sra_map_size): New.
	(make_temp): New.
	(mark_all_vdefs): New.
	(is_sra_candidate_decl): New.
	(is_sra_candidate_ref): New.
	(lookup_scalar): Use sra_map_size, make_temp.
	(get_scalar_for_field): Rename from get_scalar_for.
	(get_scalar_for_complex_part): New.
	(can_be_scalarized_p): Handle COMPLEX_TYPE.
	(scalarize_component_ref): Handle REAL/IMAGPART_EXPR.
	(scalarize_structure_assignment): Tidy.
	(find_candidates_for_sra): Handle COMPLEX_TYPE, return bool.
	(csc_assign, csc_build_component_ref): Split out from ...
	(create_scalar_copies): ... here.  Handle COMPLEX_TYPE.
	(csc_build_complex_part): New.
	(scalarize_modify_expr): Use is_sra_candidate_foo.
	(scalarize_tree_list): Likewise.
	(scalarize_return_expr): Likewise.
	(dump_sra_map): Split out from ...
	(tree_sra): ... here.  Tidy.

2004-01-15  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_xform_derefs): Accept void return statements.

2004-01-15  Andrew MacLeod  <amacleod@redhat.com>
	    Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (remove_local_expressions_from_table): New function
	extracted from dom_opt_finalize_block.
	(restore_vars_to_originalvalue): Likewise.
	(extract_true_false_edges_from_block): Likewise.
	(thread_across_edge): Handle if (cond) too.
	(dom_opt_finalize_block): Use new functions.  Handle if (cond).

	* tree-ssa-dom.c (thread_across_edge): Accept dom_walk argument.
	Record temporary equivalences created by PHIs and temporarily
	const/copy propagate into conditionals.
	(dom_opt_finalize_block): Thread across an edge to a dominated block
	if the dominated block has PHIs.  Remove temporary equivalenecs
	created by PHIs in thread_across_edge.  Update code to restore the
	various hash tables to use the actual varray rather than a local
	copy of the varray.
	(simplify_rhs_and_lookup_avail_expr): Set the condition's code
	before settings its operands.

	* tree-ssa.c (create_temp): Use add_referenced_var rather than
	an incomplete inline of its behavior.  Also make sure to
	set is_dereferenced_{load,store}, is_call_clobbered and is_stored.

	* tree-ssa-live.c (build_tree_conflict_graph): Correctly handle
	case where the result of a PHI is unused.

2004-01-15  Diego Novillo  <dnovillo@redhat.com>

	* cfghooks.c (predicted_by_p): Add missing return.

2004-01-15  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Dump new statement if
	folding succeeded.

2004-01-15  Kazu Hirata  <kazu@cs.umass.edu>

	* tree-cfg.c: Fix comment typos.
	* tree-eh.c: Likewise.
	* tree-inline.c: Likewise.
	* tree-optimize.c: Likewise.
	* tree-ssa.c: Likewise.
	* tree-ssa-dom.c: Likewise.
	* tree-ssa-operands.c: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-tailcall.c: Likewise.

2004-01-14  Jan Hubicka  <jh@suse.cz>

	* basic-block.h: Include predict.h
	(tree_predicted_by_p, rtl_predicted_by_p,  rtl_predict_edge,
	predict_edge_def): Declare.
	* cfghooks.h (cfg_hooks): add predict_edge and predicted_by_p
	(predict_edge, predicted_by_p): Declare.
	* cfghooks.c (predict_edge, predicted_by_p): Declare.
	* cfgrtl (rtl_cfg_hooks, cfg_layout_rtl_cfg_hook): Add new hooks.
	* cse.c (struct cse_basic_block_data): Rename enum values to not
	conflict with profile.h; update all uses.
	* predict.c:  Include tree-flow.h, ggc.h, tree-dump.h
	(predicted_by_p): Rename to ...
	(rtl_predicted_by_p): .. this one; make global
	(tree_predicted_by_p): New.
	(dump_prediction): Add FILE argument.
	(predict_edge): Rename to ...
	(rtl_predict_edge): .. this one.
	(tree_predict_edge): New.
	(combine_predictions_for_insn): Update calls of predict_edge.
	(predict_loops): Break out from ...
	(estimate_probability): ... here; update comments; move updating
	of unknown probabilities from ...
	(estimate_bb_frequencies): ... here.
	(combine_predictions_for_bb): New.
	(tree_predict_by_opcode): New.
	(tree_estimate_probability): New.
	* predict.def (PRED_TREE_POINTER, PRED_TREE_OPCODE_POSITIVE,
	PRED_TREE_OPCODE_NONEQUAL, PRED_TREE_FPOPCODE): New predictors.
	* predict.h: Add include guard.
	(predict_edge, predict_edge_def): Move prototypes to basic_block.h
	* tree-cfg.c (tree_cfg_hooks): Add prediction hooks.
	* tree-dump.c (dump_files): Add profile.
	* tree-flow.h (struct edge_prediction): New structure.
	(struct bb_ann_d): Add field predictions.
	(tree_estimate_probability): Declare.
	* tree-optimize.c (optimize_function_tree): Call tree_estimate_probability.
	* tree.h (tree_dump_index): Add TDI_profile.
	* tree-pass.h (pass_profile): Declare.

2004-01-14  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* basic-block.h (find_basic_blocks, cleanup_cfg,
	delete_unreachable_blocks, merge_seq_blocks): Declare.
	* cfgcleanup.c (merge_seq_blocks): New.
	* output.h (find_basic_blocks, cleanup_cfg, delete_unreachable_blocks):
	Declarations moved to basic-block.h.
	* tree-cfg.c (tree_merge_blocks, tree_can_merge_blocks_p): New.
	(cleanup_tree_cfg): Call merge_seq_blocks.
	(tree_cfg_hooks): Add tree_can_merge_blocks_p and tree_merge_blocks.

2004-01-14  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (tree_make_forwarder_block): Fix.

2004-01-14  Richard Henderson  <rth@redhat.com>

	* tree-complex.c: New file.
	* Makefile.in (OBJS-common): Add it.
	* tree-pass.h (pass_lower_complex): New.
	* tree-optimize.c (init_tree_optimization_passes): Add it.

2004-01-14  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (tree-ssa-loop.o): Add cfgloop.h dependency.
	(cfghooks.o): Add TIMEVAR_H and toplev.h dependency.
	* basic-block.h (struct edge_def): Use ir_type instead testing of
	cfg_hooks directly.
	(tidy_fallthru_edge, tidy_fallthru_edges, dump_bb, verify_flow_info):
	Declaration removed.
	* cfg.c (verify_flow_info, dump_bb): Moved to cfghooks.c.
	* cfgcleanup.c (try_simplify_condjump): Changed due to change of
	tidy_fallthru_edge.
	* cfghooks.c: Include timevar.h and toplev.h.
	(cfg_hooks): Made static.
	(tree_register_cfg_hooks, ir_type): New.
	(verify_flow_info, dump_bb): Moved from cfg.c.
	(redirect_edge_and_branch, redirect_edge_and_branch_force,
	split_block, split_block_after_labels, move_block_after,
	delete_basic_block, split_edge, create_basic_block,
	create_empty_bb, can_merge_blocks_p, merge_blocks,
	make_forwarder_block, tidy_fallthru_edge, tidy_fallthru_edges): New.
	* cfghooks.h (struct cfg_hooks): Modified.
	(redirect_edge_and_branch, redirect_edge_and_branch_force, split_block,
	delete_basic_block, split_edge, create_basic_block, can_merge_blocks_p,
	merge_blocks, make_forwarder_block): Changed into functions.
	(loop_optimizer_init, loop_optimizer_finalize): Removed.
	(HEADER_BLOCK, LATCH_EDGE): Moved into cfgloop.c.
	(tidy_fallthru_edge, tidy_fallthru_edges, create_empty_bb,
	verify_flow_info, dump_bb, ir_type): Declare.
	(cfg_layout_rtl_cfg_hooks): Declare.
	* cfglayout.c (copy_bbs): Don't call add_to_dominance_info.
	* cfgloop.c (HEADER_BLOCK, LATCH_EDGE): Moved from cfghooks.h.
	(update_latch_info, mfb_keep_just, mfb_keep_nonlatch): New functions.
	(canonicalize_loop_headers): Use new semantics of make_forwarder_block.
	* cfgloop.h (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
	Removed.
	(loop_optimizer_init, loop_optimizer_finalize): Declare.
	* cfgloopmanip.c (split_loop_bb): Don't update dominators.
	(remove_bbs): Don't call remove_bbs.
	(create_preheader): Use make_forwarder_block.
	(mfb_keep_just, mfb_update_loops): New static functions.
	* cfgrtl.c (cfg_layout_split_block, rtl_split_block,
	rtl_make_forwarder_block, rtl_create_basic_block,
	rtl_delete_block, rtl_split_block, rtl_merge_blocks,
	tidy_fallthru_edge, rtl_split_edge, cfg_layout_merge_blocks,
	cfg_layout_split_edge): Parts not specific to rtl moved to cfghooks.c
	(tidy_fallthru_edges): Moved to cfghooks.c.
	(rtl_move_block_after): New.
	(redirect_edge_with_latch_update, update_cfg_after_block_merging):
	Removed.
	(rtl_cfg_hooks, cfg_layout_rtl_cfg_hooks): Modified.
	* ifcvt.c (merge_if_block, find_cond_trap, find_if_case_1,
	find_if_case_2): Don't update dominators.
	* loop-init.c (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
	Replaced by rtl_loop_optimizer_init and rtl_loop_optimizer_finalize.
	* loop-unswitch.c (unswitch_loop): Don't call add_to_dominance_info.
	* toplev.c (rest_of_handle_loop2): Enter cfglayout mode here.
	* tree-cfg.c (create_bb): Modified to suit create_basic_block hook.
	(tree_redirect_edge_and_branch_1): Merged into
	tree_redirect_edge_and_branch.
	(create_blocks_annotations): Removed.
	(tree_loop_optimizer_init, tree_loop_optimizer_finalize): Removed.
	(tree_make_forwarder_block, remove_bb, tree_split_edge,
	tree_redirect_edge_and_branch, tree_split_block,
	tree_move_block_after): Partially moved to cfghooks.c.
	(tree_duplicate_bb): New.
	(PENDING_STMT): Moved to tree-flow.h.
	(tree_register_cfg_hooks): Moved to cfghooks.c.
	(build_tree_cfg): Don't call create_blocks_annotations.
	(factor_computed_gotos, make_blocks): Use create_empty_bb.
	(cleanup_tree_cfg): Use delete_unreachable_blocks.
	(remove_unreachable_blocks, insert_bb_before): Removed.
	(remove_phi_nodes_and_edges_for_unreachable_block): Modified.
	(tree_find_edge_insert_loc, thread_jumps): Use cfg hooks.
	(bsi_commit_edge_inserts): Update_annotations argument removed.
	(tree_cfg_hooks): Modified.
	* tree-flow.h (PENDING_STMT): Moved from tree-cfg.c.
	(insert_bb_before, remove_unreachable_blocks,
	remove_phi_nodes_and_edges_for_unreachable_block, tree_split_edge):
	Declaration removed.
	(bsi_commit_edge_inserts): Declaration changed.
	(tree_duplicate_bb): Declare.
	* tree-sra.c (scalarize_structures): Changed due to
	bsi_commit_edge_inserts change.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Use
	delete_unreachable_blocks.
	* tree-ssa-loop.c: Include cfgloop.h.
	* tree-ssa-pre.c (split_critical_edges, tree_perform_ssapre): Use cfg
	hooks.
	* tree-ssa.c (rewrite_trees, rewrite_vars_out_of_ssa): Changed due to
	bsi_commit_edge_inserts change.
	(ssa_redirect_edge): Record the phi arguments on the redirected edge.
	* tree-tailcall.c (eliminate_tail_call): Clean stored phi arguments.

2004-01-13  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_lhs_complex_part_expr): Remove.
	(gimplify_modify_expr): Don't call it.

	* tree-alias-common.c (HAVE_BANSHEE): Make sure it's defined.
	(pass_build_pta): Set name.

2004-01-13  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-tailcall.c (eliminate_tail_call): Add phi nodes for the call
	vdefs.
	(find_tail_calls): Ignore returns with virtual operands.

2004-01-12  Richard Henderson  <rth@redhat.com>

	* tree-pass.h: New file.
	* gimple-low.c: Include tree-pass.h.
	(lower_function_body): Make static, take no arguments.  Set
	dont_emit_block_notes and call reset_block_changes here.
	(pass_lower_cf): New.
	* toplev.c (general_init): Call init_tree_optimization_passes.
	* toplev.h (init_tree_optimization_passes): Declare.
	* tree-alias-ander.c: Include tree-pass.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(andersen_init): Don't dump_begin.
	(andersen_cleanup): Don't dump_end.
	* tree-alias-common.c: Include tree-pass.h, timevar.h.
	(currptadecl): Remove.
	(create_alias_vars): Make static, take no args.  Tidy ifdefs.
	(delete_alias_vars): Likewise.  Protect vs PTA_ANDERSEN.
	(pass_build_pta, pass_del_pta): New.
	* tree-alias-common.h (create_alias_vars): Delete decl.
	(delete_alias_vars): Likewise.
	* tree-cfg.c: Include tree-pass.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(build_tree_cfg): Don't timevar, do init_flow.  Ensure one bb.
	Don't dump the function here.
	(execute_build_cfg, pass_build_cfg): New.
	(remove_useless_stmts): Make static, take no arguments.
	(pass_remove_useless_stmts): New.
	(remove_bb): Don't open the dump file.
	* tree-dfa.c: Include tree-pass.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(find_referenced_vars): Make static, take no args.  Do init_tree_ssa.
	(compute_may_aliases): Similarly.  Don't timevar or open dump file.
	Don't delete_alias_vars here.
	(pass_referenced_vars, pass_may_alias): New.
	* tree-dump.c (dump_files): Remove optimization dumps.
	(extra_dump_files, extra_dump_files_in_use): New.
	(extra_dump_files_alloced): New.
	(dump_register): New.
	(get_dump_file_info): New.
	(dump_begin, dump_enabled_p, dump_flag_name): Use it.
	(dump_enable_all): Handle extra_dump_files.
	(dump_switch_p_1): Split out from dump_switch_p.
	(dump_switch_p): Handle extra_dump_files.
	* tree-dump.h (dump_register): Declare.
	* tree-eh.c: Include tree-pass.h
	(lower_eh_constructs): Make static, take no args.  Don't timevar,
	don't dump function.
	(pass_lower_eh): New.
	* tree-flow.h (remove_useless_stmts, find_referenced_vars,
	compute_may_aliases, lower_function_body, rewrite_out_of_ssa,
	tree_ssa_ccp, tree_ssa_dominator_optimize, tree_ssa_dce,
	tree_ssa_loop_opt, lower_eh_constructs, tree_sra): Remove.
	(rewrite_into_ssa): Update decl.
	* tree-mudflap.c: Include tree-pass.h.
	(mudflap_function_decls): Make static, take no args, don't process
	functions with mf_marked_p.
	(mudflap_function_ops): Likewise.
	(gate_mudflap, pass_mudflap_1, pass_mudflap_2): New.
	(mudflap_enqueue_decl): Don't open dump file.
	(mudflap_enqueue_constant): Likewise.
	* tree-nomudflap.c: Include tree-pass.h.
	(mudflap_c_function_decls, mudflap_c_function_ops): Remove.
	(pass_mudflap_1, pass_mudflap_2): New.
	* tree-optimize.c: Include tree-pass.h.
	(optimize_function_tree): Remove.
	(tree_dump_file, tree_dump_flags, vars_to_rename): New.
	(all_passes): New.
	(execute_gimple, pass_gimple): New.
	(execute_rebuild_bind, pass_rebuild_bind): New.
	(gate_all_optimizations, pass_all_optimizations): New.
	(execute_del_cfg, pass_del_cfg): New.
	(register_one_dump_file, register_dump_files): New.
	(dup_pass_1, init_tree_optimization_passes): New.
	(current_properties, last_verified): New.
	(execute_todo, execute_one_pass, execute_pass_list): New.
	(tree_rest_of_compilation): Remove -O0 passes.
	* tree-sra.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
	(tree_sra): Make static, take no args.  Don't timevar or dump file.
	(gate_sra, pass_sra): New.
	* tree-ssa-ccp.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags): New.
	(tree_ssa_ccp): Make static, take no args.  Don't timevar or dump file.
	(gate_ccp, pass_ccp): New.
	(substitute_and_fold): Take no args.
	* tree-ssa-dce.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags): New.
	(tree_ssa_dce): Make static, take no args.  Don't open dump file.
	(gate_dce, pass_dce): New.
	* tree-ssa-dom.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
	(tree_ssa_dominator_optimize): Make static, take no args, don't
	timevar, don't dump file.
	(gate_dominator, pass_dominator): New.
	* tree-ssa-loop.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(tree_ssa_loop_opt): Make static, take no args, don't open dump file.
	(gate_loop, pass_loop): New.
	* tree-ssa-pre.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(execute_pre): Rename from tree_perform_ssapre, make static,
	take no args, don't timevar, don't open dump file, don't allocate
	vars_to_rename.
	(gate_pre, pass_pre): New.
	* tree-ssa.c: Include tree-pass.h.
	(tree_dump_file, tree_dump_flags, vars_to_rename): Remove.
	(rewrite_into_ssa): Take no arguments, don't open dump file.
	(rewrite_out_of_ssa): Make static, take no args, don't timevar,
	don't open dump file.  Disable TER if mudflap.
	(pass_build_ssa, pass_del_ssa): New.
	* tree-tailcall.c: Include tree-pass.h, flags.h.
	(tree_dump_file, tree_dump_flags): Remove.
	(tree_optimize_tail_calls_1): Rename from tree_optimize_tail_calls.
	Make static, take only opt_tailcalls, don't dump file.
	(execute_tail_recursion, gate_tail_calls, execute_tail_calls): New.
	(pass_tail_recursion, pass_tail_calls): New.
	* tree.h (enum tree_dump_index): Remove optimization dumps.
	* Makefile.in (tree-alias-ander.o, tree-alias-common.o, tree-ssa.o,
	tree-ssa-dom.o, tree-ssa-pre.o, tree-cfg.o, tree-tailcall.o,
	tree-dfa.o, tree-eh.o, tree-ssa-loop.o, tree-optimize.o, gimple-low.o,
	tree-mudflap.o, tree-ssa-dce.o, tree-ssa-ccp.o, tree-sra.o: Update
	dependencies.

2004-01-12  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_xform_derefs): Restore instrumentation of
	RETURN_EXPRs.

2004-01-11  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (remove_usless_stmts_cond):  Fold statement.
	(remove_useless_stmts_1):  Fold trees we know how to fold.

2004-01-09  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_constructor): Merge into ...
	(gimplify_init_constructor): ... here.  Handle COMPLEX_TYPE and
	VECTOR_TYPE.
	(gimplify_lhs_complex_part_expr): New.
	(gimplify_modify_expr): Call it.
	* tree-simple.c (is_gimple_rhs): Accept COMPLEX_EXPR.
	* c-pretty-print.c (pp_c_initializer): Accept any type CONSTRUCTOR.
	(pp_c_initializer_list): Fix code expectations for VECTOR_TYPE and
	COMPLEX_TYPE.

2004-01-09  Steven Bosscher  <stevenb@suse.de>

	PR optimization/13599
	* tree-cfg.c (remove_useless_stmts_cond): Clear last-goto
	before returning.

2004-01-09  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_asm_expr): Fix ordering of ASM_INPUTS.

2004-01-09  Jan Hubicka  <jh@suse.cz>

	* cgraph.h (cgraph_clone_inlined_nodes): Declare.
	* cgraphunit.c (cgrpah_clone_inlined_nodes): Make global.
	(cgraph_mark_inline_edge): Sanity check that size is positive.
	(cgraph_decide_inlining): Fix typo.
	* tree-optimize.c (tree_rest_of_compilation): Fix node duplication
	code.

2004-01-09  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (estimate_num_insns_1): Fix.

2004-01-09  Richard Henderson  <rth@redhat.com>

	* tree-alias-ander.c, tree-cfg.c, tree-dfa.c, tree-mudflap.c,
	tree-sra.c, tree-ssa-ccp.c, tree-ssa-dce.c, tree-ssa-dom.c,
	tree-ssa-loop.c, tree-ssa-pre.c, tree-ssa.c, tree-tailcall.c: Rename
	dump_file and dump_flags to tree_dump_file/flags.

2004-01-08  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_build_string): Properly mf_mark string.
	(mf_varname_tree): Remove redundant marking.
	* tree-optimize.c (tree_rest_of_compilation): Skip mudflap processing
	of mf_marked functions.
	* c-mudflap.c (mflang_flush_calls): mf_mark synthetic function.

2004-01-07  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (OBJS-common): Remove tree-must-alias.o
	(tree-must-alias.o): Remove.
	* common.opt (ftree-must-alias): Remove.
	* flags.h (flag_tree_must_alias): Remove.  Update all users.
	* timevar.def (TV_TREE_MUST_ALIAS): Remove.
	* toplev.c (f_options): Remove entry for -ftree-must-alias.
	* tree-alias-common.c (local_alias_vars): Add GTY marker.
	(local_alias_varnums): Likewise.
	* tree-dfa.c (aliases_computed_p): Declare.
	(dump_variable): Show variable UID and dereferenced bits.
	(compute_may_aliases): Add arguments 'vars_to_rename' and 'phase'.
	Do not call create_alias_vars.
	Call promote_call_clobbered_vars
	Do debugging dumps.
	Set 'aliases_computed_p' to true before returning.
	(create_memory_tags): Call may_be_aliased.
	Mark new memory tags for renaming.
	(compute_alias_sets): Don't do debugging dumps.
	(find_variable_in): Move from tree-must-alias.c
	(remove_element_from): Likewise.
	(find_addressable_vars): Likewise
	(promote_call_clobbered_vars): New.
	(get_memory_tag_for): Mark the tag volatile if the pointed-to type
	is volatile.
	* tree-dump.c (dump_files): Remove entry for tree-mustalias.
	Add entries for tree-ssa7, tree-dom3 and tree-dce3.
	* tree-flow-inline.h (may_be_aliased): New.
	* tree-flow.h (may_be_aliased): Declare.
	(aliases_computed_p): Declare.
	(tree_compute_must_alias): Remove.
	* tree-must-alias.c: Remove.
	* tree-optimize.c: Include tree-alias-common.h.
	(optimize_function_tree): Call create_alias_vars before going into
	SSA form.
	Do not compute aliases until after the first DOM and DCE passes.
	Run DOM and DCE once more after computing may-aliases.
	* tree-ssa-dom.c (propagate_copy): Merge the dereferenced bit flags
	when copy propagating pointers.
	* tree-ssa-operands.c (get_stmt_operands): Assume that the
	statement has no volatile operands.
	(get_expr_operands): When processing an INDIRECT_REF expressions,
	mark the statement as having volatile operands if aliases have not
	been computed.
	(add_stmt_operand): If the variable may be aliased and aliasing has
	not been computed yet, mark the statement as having volatile
	operands.
	* tree-ssa.c (init_tree_ssa): Set aliases_computed_p to false.
	(delete_tree_ssa): Likewise.
	* tree.h (tree_dump_index): Remove TDI_mustalias.
	Add TDI_dom_3, TDI_ssa_7 and TDI_dce_3.
	* doc/invoke.texi: Remove must-alias documentation.

2004-01-07  Jeff Law  <law@redhat.com>

	* tree-ssa-dce.c (find_useful_stmts): Do not consider PHIs for
	virtual operands inherently necessary.

2004-01-07  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-dfa.c (free_df_for_stmt, free_df): New functions.
	(compute_immediate_uses_for_stmt): Record uses in VDEFs.
	* tree-flow.h (free_df, kill_redundant_phi_nodes): Declare.
	* tree-optimize.c (optimize_function_tree): Call
	kill_redundant_phi_nodes.
	* tree-ssa-ccp.c (finalize): Call free_df.
	* tree-ssa.c (replace_immediate_uses, raise_value,
	kill_redundant_phi_nodes): New functions.

2004-01-06  Jeff Law  <law@redhat.com>

	* tree.h (FUNCTION_RECEIVES_NONLOCAL_GOTO): Kill.
	* tree-cfg.c (make_exit_edges, is_ctrl_altering_stmt):  Use
	current_function_has_nonlocal_label instead of
	FUNCTION_RECEIVES_NONLOCAL_GOTO.
	* gimplify.c (gimplify_expr): Set has_nonlocal_label in the
	appropriate function's struct function rather than setting
	a bit in the FUNCTION_DECL.

2004-01-06  Jan Hubicka  <jh@suse.cz>

	* expr.c (string_constant): Recognize array_ref.

2004-01-06  Richard Henderson  <rth@redhat.com>

	* builtins.c (builtin_save_expr): New.
	(expand_builtin_mathfn, expand_builtin_mathfn_2,
	expand_builtin_strcmp, expand_builtin_strncmp,
	expand_builtin_strcat, fold_builtin_cabs): Use it.

2004-01-06  Jan Hubicka  <jh@suse.cz>

	* fold-const.c (fold): Do not rebuild comparison when nothing
	changed.

2004-01-05  Jan Hubicka  <jh@suse.cz>

	* tree-ssa-ccp.c (ccp_fold_builtin): Return early for builtins
	taking no arugment.

2004-01-05  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-ssa-dce.c: Clean up whitespace.

	* tree-cfg.c (tree_verify_flow_info): Fix complaint about
	missing or wrong labels in the targets of a conditional branch.

2004-01-05  Richard Henderson  <rth@redhat.com>

	* tree-ssa-dom.c (record_equivalences_from_incoming_edge): Check
	for signed zeros before recording value.
	* Makefile.in (tree-ssa-dom.o): Depend on real.h.

2004-01-05  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (cprop_into_stmt): Remove hack which prevented
	copy propagation into statements with virtual operands, but no
	real operands.

	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Correctly handle
	the case where an edge we wish to redirect is split by the out of SSA
	code.

2004-01-05  Richard Henderson  <rth@redhat.com>

	* c-tree.h (struct lang_type): Add enum_min, enum_max.
	* c-decl.c (finish_enum): Set them.  Set TYPE_MIN/MAX_VALUE to
	the limits of the compatible type, not to the enumerators.
	(check_bitfield_type_and_width): Use them.
	(finish_struct): Clear allocated struct lang_type.
	* gimplify.c (gimplify_switch_expr): Remove special handling of
	outer cast in a switch.
	* tree-ssa-dom.c (record_equivalences_from_incoming_edge): Likewise.

2004-01-05  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (added_phis): Removed.
	Remove gt-tree-ssa-pre.h.
	(process_left_occs_and_kills): ASM_EXPR's block load pre.

	* Makefile.in (GTFILES): Don't process tree-ssa-pre.c.
	gt-tree-ssa-pre.h isn't a gtfile anymore.

2004-01-05  Andrew Pinski  <pinskia@physics.uc.edu>

	* config.gcc (powerpc-*-darwin*): Make libbanshee rebuild
	on PPC darwin.

2004-01-05  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_expr): Move check for error_mark inside
	the main loop.

2004-01-04  Jan Hubicka  <jh@suse.cz>

	* Makefile.in (cgraph.o, cgraphunit.o): Add intl.h dependency.
	* cgraph.c (create_edge, dump_cgraph): Update to use inline_failed
	* cgraph.h (cgraph_edge): Replace inline_call by inline_failed
	(cgraph_inline_p): Add extra argument reason.
	* cgraphunit.c: Minor formating fixes.
	cgraph_first_inlined_callee): New functions.
	(record_call_1): Record builtins too.
	(cgraph_analyze_function): Update inline_failed messages.
	(cgraph_mark_functions_to_output, cgraph_expand_function, cgraph_inlined_into,
	cgraph_inlined_callees, cgraph_estimate_growth): Update to use inline_failed.
	(cgraph_check_inline_limits): Likewise; Add argument reason.
	(cgraph_set_inline_failed): New static function.
	(cgraph_decide_inlining_of_small_function, cgraph_decide_inlining): Set
	reasons.
	(cgraph_inline_p): Add new argument reason.
	* tree-inline.c (expand_call_inline):  Update warning.

2004-01-04  Andreas Jaeger  <aj@suse.de>

	* common.opt: Re-order some options in ASCII collating orders.

2004-01-03  Richard Henderson  <rth@redhat.com>

	* toplev.c (rest_of_compilation): Fixup merge error wrt
	check_function_return_warnings.

	* tree.h (FUNCTION_RECEIVES_NONLOCAL_GOTO): Use unsigned_flag.

2004-01-02  Jan Hubicka  <jh@suse.cz>

	* c-decl.c (duplicate_decls):  Output DIE of extern inline function
	only when it can be inlined.
	* c-objc-common.c (c_disregard_inline_limits):  When not inlining
	extern inline functions do not disregard.
	* cgraphunit.c (cgraph_analyze_function): When not inlining do not set
	inline.
	(cgraph_decide_inlining): Limit work done when not inlining.
	(cgrpah_decide_inlining_incrementally): Likewise.
	* tree-optimize.c (tree_rest_of_compilation): Do not call
	optimize_inline_calls
	when there is nothing to inline.

2004-01-01  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_expand_expr): Don't handle STMT_EXPR.
	* c-objc-common.c (c_objc_common_finish_file): Use expand_expr.
	* c-semantics.c (lang_expand_stmt, lang_expand_decl_stmt,
	expand_cond, genrtl_do_pushlevel, genrtl_goto_stmt, genrtl_expr_stmt,
	genrtl_expr_stmt_value, genrtl_decl_stmt, genrtl_if_stmt,
	genrtl_while_stmt, genrtl_do_stmt_1, genrtl_do_stmt,
	genrtl_return_stmt, genrtl_for_stmt, genrtl_break_stmt,
	genrtl_continue_stmt, genrtl_scope_stmt, genrtl_switch_stmt,
	genrtl_case_label, genrtl_compound_stmt, genrtl_asm_stmt,
	genrtl_cleanup_stmt, expand_stmt, find_reachable_label,
	find_reachable_label_1, expand_unreachable_if_stmt,
	expand_unreachable_stmt): Remove.
	* c-common.h: Update.

2003-12-31  Richard Henderson  <rth@redhat.com>

	* c-mudflap.c (mflang_register_call): Remove.
	(mflang_flush_calls): Use start_function/finish_function.
	* tree-mudflap.c (mf_init_extern_trees): Tidy.
	(mf_decl_cache_locals): Fix chaining for empty body.
	(deferred_static_decl_labels): Remove.
	(deferred_static_decls_init): Remove.
	(mudflap_register_call): New.
	(mudflap_enqueue_decl): Use it.  Remove label argument.
	(mudflap_enqueue_constant): Likewise.
	(mudflap_finish_file): Update to match.
	* tree-mudflap.h (mudflap_enqueue_decl): Remove label argument.
	(mudflap_enqueue_constant): Likewise.
	(mflang_register_call): Remove.
	* tree-nomudflap.c (mudflap_enqueue_decl): Remove label argument.
	(mudflap_enqueue_constant): Likewise.
	* tree-optimize.c (tree_ssa_finish): Don't create NULL bodies.
	* varasm.c (make_decl_rtl): Update mudflap_enqueue_decl call.
	(output_constant_def_contents): Similarly for mudflap_enqueue_constant.

2003-12-26  Sebastian Pop  <s.pop@laposte.net>

	* tree-cfg.c (print_loop, print_pred_bbs, print_succ_bbs,
	debug_loop_ir, print_loop_ir): New.
	* tree-flow.h (debug_loop_ir, print_loop_ir): Declare.

2003-12-23  Jeff Law  <law@redhat.com>

	* tree-cfg.c (tree_find_edge_insert_loc): Do not use the target
	block as an insertion location if the target block has PHI nodes.

2003-12-23  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_mark_inline): Accept argument edge; return
	next edge not redirected.
	(cgraph_recursive_inlining_p): Simplify.
	(cgraph_decide_inlining*): Update calls of cgraph_mark_inline.

2003-12-22  Toon Moene  <toon@moene.indiv.nluug.nl>

	* tree-alias-common.c (find_func_aliases): Do not call
	intra_function_call for languages assuring no aliasing between
	arguments (by themselves) and global memory.

2003-12-21  Jan Hubicka  <jh@suse.cz>

	* tree-ssa-ccp.c (fold_stmt): Return when there is no RHS
	(get_rhs): Return for RETURN_EXPR with no operand.

2003-12-21  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (tree_make_forwarder_block): Use split_block.
	(tree_split_block): New.
	(tree_cfg_hooks): Add tree_split_block.
	(tree_loop_optimizer_init):  Enable force_single_succ_latches.
	* cfgloopmanip.c (loop_split_edge_with): Don't update dominators.
	* cfgrtl.c (rtl_split_edge, cfg_layout_split_edge): Update dominators.

2003-12-19  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (alias_stats_d): New structure.
	(alias_stats): New variable.
	(create_memory_tags): Zero out alias_stats.
	(dump_alias_stats): New function.
	(compute_alias_sets): Call it if TDF_STATS is set.
	(may_alias_p): Collect the various statistics.

2003-12-19  Diego Novillo  <dnovillo@redhat.com>

	* gimple-low.c (expand_var_p): Always expand volatiles.
	* tree-dfa.c (find_referenced_vars): Move up in the file.
	(create_memory_tags): New local function.
	(compute_may_aliases): Call it.
	(add_referenced_var): Move code to create memory tags and create
	aliasing arrays to create_memory_tags.
	(get_memory_tag_for): Don't mark memory tags volatile.  Mark them
	addressable.
	* tree-flow.h (var_ann_d): Add bitfields is_dereferenced_store and
	is_dereferenced_load.
	(add_call_clobbered_var): Remove.
	* tree-ssa-operands.c (check_optype_freelist): Mark arguments
	unused.
	(add_optype_freelist): Likewise.
	(add_stmt_operand): Don't add operands for volatile variables.

2003-12-19  Kazu Hirata  <kazu@cs.umass.edu>

	* dominance.c: Fix comment typos.
	* et-forest.c: Likewise.
	* et-forest.h: Likewise.
	* tree-cfg.c: Likewise.
	* tree-eh.c: Likewise.
	* tree-mudflap.c: Likewise.
	* tree-optimize.c: Likewise.
	* tree-pretty-print.c: Likewise.
	* tree-ssa-ccp.c: Likewise.
	* tree-ssa-dom.c: Likewise.
	* tree-ssa.c: Likewise.
	* tree-tailcall.c: Likewise.
	* tree.def: Likewise.
	* tree.h: Likewise.

2003-12-18  Jason Merrill  <jason@redhat.com>

	PR c++/12453
	* c-simplify.c (stmt_expr_last_stmt): Split out from...
	(gimplify_stmt_expr): Here.
	* c-common.h: Declare it.

2003-12-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* et-forest.h (et_forest_create, et_forest_delete,
	et_forest_add_node, et_forest_add_edge, et_forest_remove_node,
	et_forest_remove_edge, et_forest_parent,
	et_forest_common_ancestor, et_forest_node_value,
	et_forest_enumerate_sons): Declarations removed.
	(struct et_node): New.
	(et_new_tree, et_free_tree, et_set_father, et_split, et_nca,
	et_below): Declare.
	* et-forest.c (struct et_forest_occurrence, struct et_forest,
	struct et_forest_node): Removed.
	(et_forest_create, et_forest_delete,
	et_forest_add_node, et_forest_add_edge, et_forest_remove_node,
	et_forest_remove_edge, et_forest_parent,
	et_forest_common_ancestor, et_forest_node_value,
	et_forest_enumerate_sons, splay, remove_all_occurrences,
	find_leftmost_node, find_rightmost_node, calculate_value): Removed.
	(struct et_occ): New.
	(et_nodes, et_occurences): New.
	(set_depth, set_depth_add, set_prev, set_next, et_recomp_min,
	et_check_occ_sanity, et_check_sanity, et_check_tree_sanity,
	record_path_before_1, record_path_before, check_path_after_1,
	check_path_after, et_splay, et_new_occ, et_new_tree,
	et_free_tree, et_set_father, et_split, et_nca, et_below): New.
	* basic-block.h (struct basic_block_def): New field dom.
	(struct dominance_info): Type removed.
	(calculate_dominance_info, free_dominance_info,
	nearest_common_dominator, set_immediate_dominator,
	get_immediate_dominator, dominated_by_p, get_dominated_by,
	add_to_dominance_info, delete_from_dominance_info,
	recount_dominator, redirect_immediate_dominators,
	iterate_fix_dominators, verify_dominators): Declarations
	changed.
	(enum dom_state): New.
	(dom_computed): New variable.
	(first_dom_son, next_dom_son): Declare.
	* dominance.c (struct dominance_info): Removed.
	(BB_NODE, SET_BB_NODE): Removed.
	(calculate_dominance_info, free_dominance_info,
	nearest_common_dominator, set_immediate_dominator,
	get_immediate_dominator, dominated_by_p, get_dominated_by,
	add_to_dominance_info, delete_from_dominance_info,
	recount_dominator, redirect_immediate_dominators,
	iterate_fix_dominators, verify_dominators,
	debug_dominance_info): Work over new datastructure.  Access
	dominance datastructures through CFG.
	(assign_dfs_numbers, compute_dom_fast_query, first_dom_son,
	next_dom_son): New.
	* tree-cfg.c (pdom_info): Variable removed.
	(create_bb): Add the block to the dominance information.
	(cleanup_tree_cfg): Let updating of the dominance on the
	individual passes.
	(remove_bb): Don't handle pdom.
	(cleanup_control_expr_graph, tree_make_forwarder_block,
	thread_jumps): Invalidate the dominators.
	(tree_split_edge): Update the dominators.
	(compute_dominance_frontiers_1, compute_dominance_frontiers,
	tree_verify_flow_info, tree_loop_optimizer_init): Use the new
	interface to dominators.
	* domwalk.c (walk_dominator_tree): Do not use dom_children.
	* tree-flow-inline.h (add_dom_child, remove_dom_child,
	clear_dom_children, dom_children): Removed.
	* tree-flow.h (struct bb_ann_d): Dom_children field removed.
	(add_dom_child, dom_children, build_dominator_tree): Declaration
	removed.
	(compute_dominance_frontiers): Declaration changed.
	* tree-optimize.c (optimize_function_tree): Free dominance
	information in the end.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize,
	dom_opt_finalize_block): Do not use dom_children.
	* tree-ssa-pre.c (fast_a_dominates_b, build_dfs_id_array_1,
	build_dfs_id_array): Removed.
	(pre_idom, dfs_id, dfs_id_last): Variables removed.
	(build_dfn_array): Do not use dom_children.
	(eref_compare, load_modified_phi_result, rename_1, reaching_def,
	finalize_1, collect_expressions, tree_perform_ssapre): Use the
	new interface to the dominance information.
	* tree-ssa.c (struct mark_def_sites_global_data): Idom field
	removed.
	(set_livein_block, verify_use, verify_phi_args,
	rewrite_into_ssa, mark_def_sites, verify_ssa): Use the new
	interface to the dominance information.
	(build_dominator_tree): Removed.
	* tree-tailcall.c (tree_optimize_tail_calls): Invalidate
	dominance information.
	* bt-load.c (dom): Variable removed.
	(augment_live_range, combine_btr_defs, migrate_btr_def,
	migrate_btr_defs, branch_target_load_optimize): Updated for the
	new interface for dominance information.
	* cfglayout.c (copy_bbs): Removed loops argument. Updated for
	the new interface for dominance information.
	* cfglayout.h (copy_bbs): Declaration changed.
	* cfgloop.c (flow_loop_pre_header_find, flow_loops_cfg_dump,
	flow_loop_scan, canonicalize_loop_headers, flow_loops_find): Updated
	for the new interface for dominance information.
	(flow_loop_scan): Loops argument removed.
	(flow_loops_free): Don't release dominators.
	* cfgloop.h (struct cfg): Dom field removed.
	(flow_loop_scan, loop_split_edge_with, simple_loop_p,
	just_once_each_iteration_p, split_loop_bb): Declaration changed.
	* cfgloopanal.c (simple_loop_exit_p, simple_increment,
	just_once_each_iteration_p, simple_loop_p): Remove loops argument.
	Updated for the new interface for dominance information.
	* cfgloopmanip.c (remove_bbs, find_path, create_preheader,
	split_loop_bb, loopify, duplicate_loop_to_header_edge,
	force_single_succ_latches, loop_split_edge_with): Ditto.
	(create_loop_notes): Free the dominators.
	* gcse.c (dominators): Variable removed.
	(free_code_hoist_mem, compute_code_hoist_data, hoist_code):
	Updated for the new interface for dominance information.
	* ifcvt.c (post_dominators): Variable removed.
	(mark_loop_exit_edges, merge_if_block, find_if_header,
	find_cond_trap, find_if_case_1, find_if_case_2, if_convert):
	Updated for the new interface for dominance information.
	* loop-init.c (rtl_loop_optimizer_init,
	rtl_loop_optimizer_finalize): Ditto.
	* loop-unroll.c (decide_peel_simple, decide_peel_once_rolling,
	decide_peel_completely, decide_unroll_stupid,
	decide_unroll_constant_iterations,
	decide_unroll_runtime_iterations): Loops argument removed.
	Updated for the new interface for dominance information.
	(unroll_and_peel_loops, peel_loops_completely,
	unroll_loop_runtime_iterations): Updated for the new interface for
	dominance information.
	* loop-unswitch.c (may_unswitch_on_p, unswitch_loops,
	unswitch_single_loop, unswitch_loop): Updated for the new
	interface for dominance information.
	* predict.c (process_note_predictions, process_note_prediction,
	estimate_probability, note_prediction_to_br_prob): Ditto.
	* sched-rgn.c (find_rgns, init_regions): Ditto.
	* toplev.c (rest_of_handle_branch_prob): Free the dominators.

2003-12-18  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (edges_to_redirect, redirection_targets): Merged
	into a single varray "redirection_edges".
	(tree_ssa_dominator_optimize): Twiddle initialization, finalization
	and accessors to redirection information based on combining varrays.
	Get the threading destination from the saved edge rather than from a
	saved block.  Mark variables appearing in PHIs at the jump thread
	destination to be taken out of SSA form.
	(thread_across_edge): Save the edge into the destination block
	rather than the destination block itself.  Twiddle based on
	combining varrays of jump threading information.
	* tree-flow.h (tree_block_forwards_to): Returns an edge rather than
	a block.
	* tree-cfg.c (tree_block_forwards_to): Return the edge leading to
	the target block rather than the target block itself.

2003-12-18  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (get_memory_tag_for): Don't put things with different
	points-to sets in the same memory tag.

2003-12-18  Jan Hubicka  <jh@suse.cz>

	* c-common.c (handle_nonnull_attribute, check_function_nonnull):
	Initialize arg_num.
	* c-format.c (handle_format_attribute): Initialize format_num.
	* rtlanal.c (get_related_value): Initialize get_jump_table_offset

2003-12-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* stmt.c (expand_start_loop, expand_loop_continue_here,
	expand_end_loop): Don't create loop notes.

2003-12-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
	    Jeff Law  <law@redhat.com>

	* tree-cfg.c (tree_node_shared_p): Explicitly allow sharing of
	CST nodes.
	* tree-simple.c (is_gimple_rhs): Allow CST nodes.
	(is_gimple_min_invariant): Reject constants with TREE_OVERFLOW set.
	* tree-ssa-ccp (visit_assignment): Test is_gimple_min_invariant
	after munging bitfields.
	* tree-ssa-dom.c (record_equivalences_from_stmt): Similarly.

2003-12-17  Jan Hubicka  <jh@suse.cz>

	Based on patch by Dale Johannesen
	* expr.c (MOVE_RATIO, CLEAR_RATIO): Move to ...
	* expr.h (MOVE_RATIO, CLEAR_RATIO): ... here

2003-12-17  Jan Hubicka  <jh@suse.cz>

	* Makefile.in (sibcall.o): Kill.
	(tree-tailcall.o): Add except.h dependency
	* sibcall.c: Kill.
	(purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
	* calls.c (purge_reg_equiv_notes, purge_mem_unchanging_flag) ... here.
	(expand_call): Do not produce placeholders; do not deal with tail
	recursion; set tail_call_emit.
	(fixup_tail_calls): New.
	* expr.h (fixup_tail_calls): Declare.
	* toplev.c (rest_of_handle_sibling_calls): Kill.
	(rest_of_compialtion): Do not use rest_of_handle_sibling_calls;
	call fixup_tail_calls.
	* tree-dump.c (dump_files): Add tail2
	* tree-flow.h (tree_optimize_tail_calls): Update prototype.
	* tree-optimize.c (optimize_function_tree): Do tail optimization twice.
	* tree-tailcall.c: Inlucde except.h
	(suitable_for_tail_call_opt_p): New.
	(optimize_tail_call): Add opt_tailcalls argument; optimize tailcalls.
	(tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
	* tree.h (CALL_EXPR_TAILCALL): New.
	(tree_dump_index): Add tail2
	* function.h (struct function): Add tail_call_emit field.

2003-12-17  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (estimate_num_insns_1):  Check that all nodes are
	known; add missing nodes; fix MODIFY_EXPR

2003-12-16  Jason Merrill  <jason@redhat.com>

	PR middle-end/12920
	* stor-layout.c (layout_type): Just return if type is
	error_mark_node.
	* c-decl.c (grokdeclarator): Immediately layout an
	ARRAY_TYPE used in a pointer-to-array declarator.

2003-12-16  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (may_alias_p): If VAR and PTR are pointers with the
	same alias set, return false.
	(get_memory_tag_for): Group based on alias set classes, not on
	conflicting alias sets.
	* tree-must-alias.c (promote_var): Don't bring aliases over when
	all the may-aliases of a non-promotable variable are promoted.

2003-12-16  Andrew MacLeod  <amacleod@redhat.com>

	* tree-flow-inline.h (free_vuse, free_vdefs): Moved to
	tree-ssa-operands.c
	(get_def_ops, get_use_ops, get_vdef_ops, get_vuse_ops): Use the new
	more direct structure pointer.
	(get_use_op_ptr, get_def_op_ptr): Cast is no longer necessary.
	* tree-flow.h (struct stmt_ann_d): Replace operands and voperands
	pointers with pointers directly to the operand types.
	* tree-ssa-dom.c (cprop_into_stmt): Use new stmt based interface to
	free virtual operands.  Check virtual bases of both VUSE and VDEF.
	* tree-ssa-operands.c (struct voperands_d): Declare here, used only
	for previous_vops during stmt operand construction.
	(struct vecmanage_d, vecmanage_add_segmen, vecmanage_add_special,
	vecmanage_init, vecmanage_tree_ptr_init, vecmanage_fini, check_free,
	vecmanage_new_vector, vecmanage_new_tree_ptr_vector,
	vecmanage_free_vector): Remove.
	(allocate_ssa_op_vec, free_ssa_op_vec, allocate_ssa_virtual_op_vec,
	allocate_operands_t, allocate_voperands_t): Remove.
	(finalize_new_ssa_operands, inalize_new_ssa_virtual_operand): Remove.
	(struct freelist_d): New. List of free operand structures.
	(check_optype_freelist): New. Choose memory from freelist, if available.
	(add_optype_freelist): New. Add structure to freelist, if appropriate.
	(allocate_def_optype): New. Allocate a def operand list from GC.
	(allocate_use_optype): New. Allocate a useoperand list from GC.
	(allocate_vdef_optype): New. Allocate a vdef operand list from GC.
	(allocate_vuse_optype): New. Allocate a vuse operand list from GC.
	(free_uses, free_defs, free_vuses, free_vdefs): Use GC and the freelist.
	(remove_vuses, remove_vdefs): New.  External interface to remove virtual
	operands.
	(init_ssa_operands, fini_ssa_operands): Ensure the free list is empty.
	(finalize_ssa_defs, finalize_ssa_use, finalize_ssa_vdefs,
	finalize_ssa_vuses): Use new direct pointers from the stmt annotation.
	(append_vdef, append_vuse): No need to hack prev_vops pointer now.
	(get_stmt_operands): use new freeing interface, keep previous vops in
	their own local structure for now, passing its address around.
	* tree-ssa-operands.h (struct def_optype_d, struct use_optype_d,
	struct vdef_optype_d, struct vuse_optype_d): Implement as a single
	dynamically allocated structure.
	(struct operands_d, struct operands_d): Remove.
	* tree-ssa-pre.c (subst_phis): Remove virtual operands using new funcs.

2003-12-16  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (verify_addr_expr): Rename to ....
	(verify_expr):  ... this one; check that no SSA names are on
	freelist.
	(verify_stmt, verify_stmts): Update calls of verify_addr_expr.

	Revert until initializers are made language independent:
	* cgraphunit.c (record_call_1): Do not call analyze_expr hook
	* langhooks-def.h (LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR): Kill.
	(LANG_HOOKS_CALLGRAPH_INITIALIZER): Update.
	* longhooks.h (lang_hooks_for_callgraph): Kill analyze_expr.

2003-12-16  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-pretty-print.c (dump_bb_header): Show block number when
	there is no label.
	(pp_cfg_jump): Show labels in addition to block numbers.
	(dump_generic_bb_buff): Always call dump_bb_header.

2003-12-16  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_remove_unreachable_nodes): Fix typo;
	improve comments; cleanup linked list mantenance.

2003-12-15  Diego Novillo  <dnovillo@redhat.com>

	* tree-sra.c (can_be_scalarized_p): Reject volatile variables.

	* sibcall.c (skip_copy_to_return_value): Initialize 'hardret' and
	'softret'.

2003-12-16  Jan Hubicka  <jh@suse.cz>

	* cgraph.c (cgraph_remove_node): Ignore DECL_EXTERNAL clones.
	* cgraphunit.c (verify_cgraph_node): Do not insist on unemmited extern
	inline functions to be valid.
	(cgraph_finalize_compilation_unit):  Fix ordering.
	(cgraph_mark_functions_to_output): Do not insist on DECL_EXTERNAL
	nodes to be reclaimed.
	(cgraph_remove_unreachable_nodes): New function.
	(cgraph_decide_inlining): use it.

2003-12-15  Andrew MacLeod  <amacleod@redhat.com>

	* Makefile.in (TREE_FLOW_H): Add dependence on tree-ssa-operands.h
	(OBJS-common): Add tree-ssa-operands.o
	(tree-ssa-operands.o): Add dependencies.
	(GTFILES): Add tree-ssa-operands.[ch].
	* tree-dfa.c (get_stmt_operands, get_expr_operands, add_stmt_operand,
	note_addressable, add_def, add_use, add_vde, add_vuse,
	add_call_clobber_ops, add_call_read_ops): Moved to tree-ssa-operands.c.
	(compute_immediate_uses_for_stmt): Use new optypes interface.
	(cleanup_operand_arrays): Delete.
	(collect_dfa_stats_r): Use new optypes interface.
	(get_call_flags): Moved to tree-ssa-operands.c.
	(vdefs_disappeared_p, mark_new_vars_to_rename): Use optypes interface.
	* tree-flow-inline.h (def_ops, use_ops, vdef_ops, vuse_ops): Use new
	optypes.
	(free_vuses): New. Clear and release vuses.
	(free_vdefs): New. Clear and release vdefs.
	(get_use_ops_ptr): New. Get address of a use op.
	(get_def_ops_ptr): New. Get address of a use op.
	(get_vdef_result_ptr): New. Get address of a use op.
	(get_vdef_op_ptr): New. Get address of a use op.
	(get_vuse_op_ptr): New. Get address of a use op.
	(start_ssa_stmt_operands): New. Entry point to start processing stmt
	operands.
	* tree-flow.h (struct operands_d, struct voperands_d): Move to
	tree-ssa-operands.h
	(struct stmt_ann_d): Add GTY markers to operands.
	* tree-pretty-print.c (dump_vops): Use optypes interface.
	* tree-sra.c (create_scalar_copies): Use optypes interface.
	(scalarize_structures, scalarize_modify_exp): Use optypes interface.
	* tree-ssa-ccp.c (visit_stmt, ccp_fold, initialize, replace_uses_in,
	likely_value, set_rhs): Use optypes interface.
	* tree-ssa-dce.c (find_useful_stmts, stmt_useful_p, process_worklist):
	Use optypes interface.
	* tree-ssa-dom.c (thread_across_edge, thread_jumps_walk_stmts): Use
	optypes interface.
	(cprop_into_stmt): Rewrite using new interface.
	(eliminate_redundant_computations, record_equivalences_from_stmt,
	optimize_stmt, avail_expr_hash, avail_expr_eq): Use optypes interface.
	* tree-ssa-live.c (create_ssa_var_map, calculate_live_on_entry,
	build_tree_conflict_graph,register_ssa_partitions_for_vars): Use
	optypes interface.
	* tree-ssa-pre.c (names_match_p, maybe_find_rhs_use_for_var,
	expr_phi_insertion, same_e_version_real_occ_real_occ, opnum_of_phi,
	generate_expr_as_of_bb, generate_vops_as_of_bb, subst_phis,
	load_modified_real_occ_real_occ, same_e_version_phi_result, can_insert,
	get_default_def, reaching_def, process_left_occs_and_kills,
	collect_expressions): Use optypes interface.
	* tree-ssa.c (mark_def_sites, check_replaceable, find_replaceable_in_bb,
	dump_replaceable_exprs, rewrite_trees, verify_ssa, rewrite_stmt): Use
	optypes interface.
	(init_tree_ssa): Initialize new operand data structures.
	(delete_tree_ssa): Free new operand structures.
	* tree.h (VDEF_RESULT, VDEF_OP, NUM_VDEFS): Move to tree-ssa-operands.h.

	* tree-ssa-operands.h: New file.
	(struct def_optype_d): New. Structure for stmt defs.
	(struct use_optype_d): New. Structure for stmt uses.
	(struct vdef_optype_d): New. Structure for stmt vdefs.
	(struct vuse_optype_d): New. Structure for stmt vuses.
	(USE_OPS, STMT_USE_OPS, NUM_USES, USE_OP_PTR, USE_OP): Macros to
	access stmt uses.
	(DEF_OPS, STMT_DEF_OPS, NUM_DEFS, DEF_OP_PTR, DEF_OP): Macros to
	access stmt defs.
	(VDEF_OPS, STMT_VDEF_OPS, NUM_VDEFS, VDEF_RESULT_PTR, VDEF_RESULT,
	VDEF_OP_PTR, VDEF_OP): Macros to access stmt vdefs.
	(VUSE_OPS, STMT_VUSE_OPS, NUM_VUSES, VUSE_OP_PTR, VUSE_OP): Macros to
	access stmt vuses.
	(struct operands_d, struct voperands_d): moved from tree-dfa.c.
	* tree-ssa-operands.c: New file.
	(build_defs, build_uses, build_vdefs, build_vuses): New static varrays.
	(struct vecmanage_d): New. Struct to manage non-GC vectors.
	(vecmanage_add_segment): New. Add a new segment to a vector manager.
	(vecmanage_add_special): New. Add a large vector to the special list.
	(vecmanage_init): Initialize a vector manager.
	(vecmanage_tree_ptr_init): New. Initialize a vector manager for tree *.
	(vecmanage_fini): New. Release vector manager memory.
	(check_free): New. Look for free memory in the vector maanger.
	(vecmanage_new_vector): New. Allocate a vector.
	(vecmanage_new_tree_ptr_vector): New. Allocate a vector of 'tree *'.
	(vecmanage_free_vector): New. Free a vector.
	(free_ssa_op_vec): New. Free an ssa operand's memory.
	(allocate_ssa_op_vec): New. Allocate a vector for use/defs.
	(allocate_ssa_virtual_op_vec): New. Allocate a vector for vuse/vdefs.
	(allocate_operands_t): New. Allocate an operand structure.
	(allocate_voperands_t): New. Allocate a virtual operand structure.
	(free_uses): New. Clear and release uses.
	(free_defs): New. Clear and release defs.
	(init_ssa_operands): New. Initialize ssa operand management.
	(fini_ssa_operands): New. Cleanup ssa operand management.
	(finalize_new_ssa_operands): New. Commit current operands.
	(finalize_new_ssa_virtual_operands): New. Commit current virtual ops.
	(finalize_ssa_defs): New. Commit and verify stmt definitions.
	(finalize_ssa_uses): New. Commit and verify stmt uses.
	(finalize_ssa_vdefs): New. Commit and verify stmt virtual definitions.
	(finalize_ssa_vuses): New. Commit and verify stmt virtual uses.
	(finalize_ssa_stmt_operands): New. Commit all stmt operands.
	(verify_start_operands): New. Verify build mechanism is ready for a new
	stmt.
	(append_def): Renamed from add_def, and moved from tree-dfa.c.
	(append_use): Renamed from add_def, and moved from tree-dfa.c.
	(append_vdef): Renamed from add_def, and moved from tree-dfa.c.
	(append_vuse): Renamed from add_def, and moved from tree-dfa.c.
	(add_vuse): New. Entry point to add a vuse to a stmt.
	(get_call_flags): Moved from tree-dfa.c
	(get_stmt_operands, get_expr_operands, add_stmt_operand): Moved from
	tree-dfa.c, and use new optype interface.
	(note_addressabe, add_call_clobber_ops, add_call_read_ops): Moved from
	tree-dfa.c

2003-12-15  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (optimize_function_tree): Call BITMAP_XFREE.

2003-12-15  Diego Novillo  <dnovillo@redhat.com>

	PR optimization/12747

	* tree-cfg.c (verify_addr_expr): Simplify predicates.
	* tree-must-alias.c (addresses_needed): Declare as file local.
	(can_be_promoted): New.
	(tree_compute_must_alias): Call it.
	Remove promoted variables from call_clobbered_vars.
	(find_addressable_vars): Update comment.
	Remove argument.  Update callers.
	(promote_var): Always clear TREE_ADDRESSABLE.
	Don't remove promoted variables from call_clobbered_vars.
	If the promoted variable is in the may-alias set of a
	non-promotable variable, copy its alias set into the alias set of
	the non-promotable variable.
	(find_variable_in): Update comment.
	* tree-sra.c (can_be_scalarized_p): Reject structures with
	__complex__ fields in them.

2003-12-15  Diego Novillo  <dnovillo@redhat.com>
	    Jason Merrill <jason@redhat.com>

	PR optimization/12747

	* Makefile.in (tree-simple.o): Add dependency on bitmap.h and
	$(GGC_H).
	(GTFILES): Add tree-simple.c.
	* tree-simple.c: Include ggc.h and bitmap.h.
	(is_gimple_non_addressable_1): Remove.  Update all callers.
	(types_checked): New local variable.
	(types_in_memory): New local variable.
	(struct_needs_to_live_in_memory): New.
	(needs_to_live_in_memory): New.
	(is_gimple_reg): Call it.
	(is_gimple_non_addressable): Call it.
	(is_gimple_call_clobbered): Call it.
	* tree-simple.h (needs_to_live_in_memory): Declare.

2003-12-14  Andreas Jaeger  <aj@suse.de>

	* config/rs6000/rs6000.c (rs6000_output_function_epilogue): Handle
	GNU F95.

2003-12-14  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_expand_function):  Release function body when no
	longer needed.
	(lookup_recursive_calls): New function.
	(cgraph_decide_recursive_inlining): Likewise.
	(cgraph_decide_inlining_of_small_functions): Do recursive inlining.
	* tree-inline.c: Include function.h
	(copy_body): Choose saved body for recursive inlining.
	(initialize_inlined_parameters): Likewise.
	(expand_call_inline): Do not verify nodes when recursivly inlining,
	insert ret_label into decl map.
	* params.def (PARAM_MAX_INLINE_INSNS_RECURSIVE,
	PARAM_MAX_INLINE_INSNS_RECURSIVE_AUTO,
	PARAM_MAX_INLINE_RECURSIVE_DEPTH,
	PARAM_MAX_INLINE_RECURSIVE_DEPTH_AUTO): New argument.
	* invoke.texi (max-inline-insns-recursive, max-inline-recursive-depth):
	Document.
	* Makefile.in (tree-inline.o): Include function.h.

2003-12-14  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (record_call_1): Do not call analyze_expr hook
	* langhooks-def.h (LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR): Kill.
	(LANG_HOOKS_CALLGRAPH_INITIALIZER): Update.
	* longhooks.h (lang_hooks_for_callgraph): Kill analyze_expr.

2003-12-13  Jan Hubicka  <jh@suse.cz>

	* timevar.def (TV_TREE_STMT_VERIFY, TV_CFG_VERIFY, TV_CGRAPH_VERIFY):
	New timers.
	* tree-cfg.c (verify_stmts):  Push/pop timevar.
	* cfg.c: Include timevar.h
	(verify_flow_info): Push/pop timevar.
	* Makefile.in (cfg.o): Add dependnecy on TIMEVARS

	* cgraph.c (cgraph_create_edge): Sanity check for duplicates;
	initialize aux.
	(cgraph_remove_node): Decrease cgraph_n_nodes; do not clear
	DECL_SAVED_TREE when dumping.
	(cgraph_dump_node): Break out from ...; print more information.
	(cgraph_dump): ... here.
	* cgraph.h (cgraph_node): Add aux field.
	(dump_cgraph_node, verify_cgraph, verify_cgraph_node): Declare.
	(cgraph_mark_inline_edge): Declare
	* cgraphunit.c (error_found): New static variable.
	(verify_cgraph_node_1): New static function.
	(verify_cgraph_node, verify_cgraph): New global function.
	(cgraph_expand_function): More sanity checks.
	(cgraph_clone_inline_nodes): Destructivly clone DECL_EXTERNAL nodes.
	(cgraph_mark_inline_edge): Make global.
	(cgraph_decide_inlining): Remove extern inline functions never inlined.
	(cgraph_decide_inlining_incrementally): Verify that function body is
	still present.
	(expand_all_functions): Verify that all nodes are reachable.
	(cgraph_optimize): Verify cgraph and memory management.
	* tree-inline.c (copy_body_r): All edges must be present.
	(expand_call_inline): Sanity check newly created edges and nodes
	being inlined.
	(optimize_inline_calls): Sanity check that we've inlined everything.
	* tree-optimize.c (tree_rest_of_compilation): Clone functions inlined
	into cloned node.

2003-12-13  Jan Hubicka  <jh@suse.cz>

	* tree-flow.h (tree_ssa_useless_type_conversion_1): Declare.
	* tree-flow.c (tree_ssa_useless_type_conversion_1): Break out from
	from...; allow complex types whose subtypes match.
	(tree_ssa_useless_type_conversion): ... here.

2003-12-12  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Don't call cleanup_control_expr
	here.  Instead just note that we need to cleanup the cfg (which
	will DTRT).

	* timevar.def (TV_TREE_SSA_THREAD_JUMPS): Kill.
	* tree-dump.c (dump_files): Kill .thread dump.
	* tree.h (TDI_thread_jumps): Kill.
	* tree-flow.h (tree_ssa_dominator_thread_jumps): Kill prototype.
	* tree-optimize.c (optimize_function_tree): Kill call to
	tree_ssa_dominator_thread_jumps.
	* tree-ssa-dom.c (thread_through_phis): Kill.  We no longer need
	to restrict threading through PHIs.
	(tree_ssa_dominator_thread_jumps): Kill.
	(tree_ssa_domiantor_optimize_1): Fold back into
	tree_ssa_dominator_optimize.
	(tree_ssa_dominator_optimize): Mark back edges in the flow graph.
	Kill code which conditionalized the walk_tree callbacks based
	on thread_through_phis.  When threading jumps, reorganize code
	so that we can take the affected variables out of SSA form.
	Mark new variables created by out-of-ssa code as needing to be
	rewritten.
	(thread_across_edge): Always allow threading through phis.
	(thread_jumps_walk_stmts): Kill.

	* tree-ssa.c (create_temp): When we create a new temporary, make
	sure to put it into referenced_vars, give it an ID number and
	a suitable mem_tag.
	(eliminate_build): If we encounter a PHI argument which is an
	SSA_VAR we are not rewriting out of SSA form, then just treat
	it like a constant.
	(rewrite_vars_out_of_ssa): New function.
	* tree-flow.h (rewrite_vars_out_of_ssa): Prototype.
	* tree-ssa-live.c (register_ssa_partitions_for_vars): New function.
	* tree-ssa-live.h (register_ssa_partitions_for_vars): Prototype.

2003-12-12  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (remap_decl): Avoid invalid sharing.
	* cp-tree.h (optimize_function): Kill.
	* optimize.c (optimize_function): Kill.
	* semantics.c (expand_body): Do not call optimize_function.

2003-12-12  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_optimize):  Do not decide inlining when not
	inlining

2003-12-11  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (initialize_inlined_parameters): Disable
	constant propagation for non-gimple-min-invariant when
	preserving gimple form.

2003-12-11  Jeff Law  <law@redhat.com>

	* tree-ssa-ccp.c (widen_bitfield): Clear out unwanted high bits
	even if the field's type is unsigned.
	* tree-ssa-dom.c (record_equivalences_from_stmt): When creating
	equivalences from stores, be more careful about non-constant
	stores to bitfields.

2003-12-11  Diego Novillo  <dnovillo@redhat.com>

	* opts.c (decode_options): Do not enable the tree loop optimizer by
	default.
	* tree-ssa-loop.c (tree_ssa_loop_opt): Remove ENABLE_CHECKING
	guards.

2003-12-10  Richard Henderson  <rth@redhat.com>

	* builtins.c (expand_builtin_profile_func): New.
	(expand_builtin): Use it.
	* builtins.def (BUILT_IN_PROFILE_FUNC_ENTER): New.
	(BUILT_IN_PROFILE_FUNC_EXIT): New.
	* function.c (expand_function_start, expand_function_end): Don't
	do function instrumentation here.
	* gimplify.c (gimplify_function_tree): Do it here.

	* c-opts.c (c_common_post_options): Don't ever use rtl inlining.

2003-12-10  Diego Novillo  <dnovillo@redhat.com>

	* ifcvt.c (dead_or_predicable): Initialize local variable
	'earliest'.
	* tree-cfg.c (verify_stmt): Fix typo.
	* tree-ssa-dom.c (propagate_value): New local function.
	(cprop_into_stmt): Call it.
	(cprop_into_phis): Call it.
	(eliminate_redundant_computations): Call it.

2003-12-10  Dale Johannesen  <dalej@apple.com>

	* tree-dfa.c (compute_alias_sets):  Don't try to make
	GLOBAL_VAR alias itself.

2003-12-08  Steven Bosscher  <stevenb@suse.de>

	* tree-must-alias.c (tree_compute_must_alias): Use
	num_call_clobbered_vars and call_clobbered_var() instead of
	poking in the call_clobbered_vars varray directly.

2003-12-11  Jan Hubicka  <jh@suse.cz>

	* cgraph.c (cgraph_function_possibly_inlined_p): Fix syntax error on
	gcc-2.95.

2003-12-10  Diego Novillo  <dnovillo@redhat.com>

	Revert

	2003-12-07  Richard Henderson  <rth@redhat.com>

		* c-common.c (c_address_looks_like_offsetof): New.
		* c-common.h (c_address_looks_like_offsetof): Declare.
		* c-typeck.c (build_unary_op) <ADDR_EXPR>: Use it.  Don't lower
		address references not destined for offsetof.
		(c_expand_return): Only look inside ARRAY_REF and COMPONENT_REF
		when looking for returning address of local variable.
		* expr.c (expand_expr_1): Don't dereference size
		of unbounded arrays.
		* gimplify.c (gimplify_addr_expr): Only fold
		address of variable size array elements.
		* tree-simple.c (is_gimple_min_invariant): Also check
		is_gimple_variable before disallowing offset address for type.
		* tree-ssa-ccp.c (maybe_fold_offset_to_aggregate_ref): New.
		(maybe_fold_offset_to_component_ref): Use it.
		(maybe_fold_stmt_indirect, maybe_fold_stmt_plus): Likewise.
		(maybe_fold_offset_to_array_ref): Likewise.
		Don't fail for division remainder non-zero.
		* varasm.c (initializer_constant_valid_p) <ADDR_EXPR>: Use
		handled_component_p and look inside references.
		<MINUS_EXPR>: Always look past widening casts.

2003-12-09  Jan Hubicka  <jh@suse.cz>

	* cgraph.c (cgraph_inline_hash): New global variable.
	(cgraph_create_node): Break out of ....
	(cgraph_node): ... this one.
	(cgraph_redirect_edge_callee):  New function.
	(cgraph_remove_node): Aggressively elliminate dead nodes;
	remove node out of clone list.
	(dump_cgraph): Dump inlined_to field; dump uid numbers.
	(cgraph_clone_edge): Return edge created.
	(cgraph_clone_node): New.
	(cgraph_function_possibly_inlined_p): Re-implement using hashtable.
	* cgraph.h: Include hashtab.h
	(struct cgraph_global_info): Kill inline_once, will be output and
	cloned_times fields.  Add inlined_to field.
	(cgraph_node): Add next_clone.
	(cgraph_inline_hash): Declare.
	(cgraph_clone_edge): Update prototype.
	(cgraph_clone_node, cgraph_redirect_callee): Declare.
	* cgraphunit.c (cgraph_optimize_function): Kill.
	(cgraph_assemble_function): Kill next_needed to avoid GGC corruption.
	(cgraph_analyze_function): Do not intialize cloned_times and
	will_be_output.
	(cgraph_finalize_compilation_unit):  Clear next_needed.
	(cgraph_optimize_function): Kill.
	(cgraph_expand_function): Do not use cgraph_optimize_function.
	(cgraph_estimate_growth, cgraph_mark_inline,
	cgraph_check_inline_limits, cgraph_recursive_inlining_p,
	cgraph_preserve_function_body_p): Update for explicit clones.
	(INLINED_TIMES, SET_INLINED_TIMES, cgraph_inlined_into,
	cgraph_inlined_callees, struct cgraph_inline_context,
	cgraph_create_inline_context, cgraph_free_inline_context,
	cgraph_inline_context_set_caller, cgraph_inline_context_clear_caller,
	cgraph_inline_context_set_callee, cgraph_inline_context_clear_callee,
	update_callee_keys): Kill.
	(cgraph_clone_inlined_nodes, cgraph_mark_inline_edge): New.
	(cgraph_decide_inlining_of_small_functions, (cgraph_decide_inlining,
	cgraph_decide_inlining_incrementally): Simplify.
	* tree-inline.c (typedef struct_inline_data): New field saving_p.
	(copy_body_r): Update all clones.
	(expand_call_inline): Remove inlined cgraph node.
	(save_body): Inicialize id.node and id.saving_p.
	* tree-optimize.c (tree_rest_of_compilation): Maintain clone up-to-date
	in no-unit-at-a-time mode.

2003-12-08  Steven Bosscher  <stevenb@suse.de>

	* tree-optimize.c (optimize_function_tree): Move verify_ssa calls
	into conditionals.

2003-12-08  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c (andersen_same_points_to_set): Fix memory leak.

2003-12-08  Jeff Law  <law@redhat.com>

	* tree-ssa-live.c (register_ssa_partition): Kill legacy code which
	recursively called register_ssa_partition on PHI arguments when
	SSA_VAR was defined by a PHI_NODE.

2003-12-08  Jan Hubicka  <jh@suse.cz>

	* tree-dump.c (dump_files): Fix ordering of tail call pass.
	* tree.h (tree_dump_index): Likewise.

2003-12-08  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (tree-cfg.o): Add gt-tree-cfg.h dependency.
	(GTFILES): Add tree-cfg.c.
	* tree-cfg.c: Include gt-tree-cfg.h.
	(factored_computed_goto_label, factored_computed_goto):
	Mark gc roots.

2003-12-08  Steven Bosscher  <stevenb@suse.de>
	    Jan Hubicka  <jh@suse.de>

	* gengtype-lex.l (IWOrD): Add HOST_WIDEST_INT
	* Makefile.in (function.o, reg-stack.o): Add missing dependency on
	basic-block.h.
	(GTFILES): Add basic-block.h and hwint.h.
	* basic-block.h (struct edge_def): Add GTY markers, make garbage
	collectable.  Make `insns' field GC safe depending on the setting
	of cfg_hooks.
	(struct basic_block_def): Add GTY markers, make garbage collectable.
	(tree_bb_root, tree_phi_root): Kill extern decls.
	(ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR): Change from macro to variable
	(entry_exit_blocks): Kill.
	* cfg.c: Include ggc.h
	(bb_pool, edge_pool, entry_exit_blocks): Kill.
	(ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR): Define.
	(init_flow): Do not create ppols; allocate entry/exit block.
	(free_edge, alloc_block, expunge_block, unchecked_make_edge): Use GGC.
	(compact_blocks): Don't update tree_bb_root and tree_phi_root.
	* cfgrtl.c (rtl_merge_blocks): Clear head pointer.
	* regs.h: Protect against multiple inclusion.
	* tree-cfg.c (obstack_tree_ann_obstack, first_block_tree_and_obj,
	tree_bb_root): Kill.
	(build_tree_cfg, create_bb, remove_bb, delete_tree_cfg): Don't
	touch tree_bb_root and tree_phi_root.
	(create_block_annotations): Do not initialize obstack.
	(free_block_annotations): Do not free obstack.
	(create_block_annotation): Use GGC.
	* tree-dfa.c (tree_phi_root): Kill.
	* tree-flow.h (bb_ann, bb_ann_d): Declare.  Add `phi_nodes' field.
	* tree-phinodes.c (create_phi_node, add_phi_arg, remove_phi_node,
	remove_all_phi_nodes_for): Use `phi_nodes' field in the bb
	annotation instead of tree_phi_root.
	* tree-flow-inline.h (phi_nodes, set_phi_nodes): Likewise.
	(add_dom_child, clear_dom_children): Use GGC.
	* tree-ssa-pre.c (code_motion): Use `phi_nodes' field in the bb
	annotation instead of tree_phi_root.
	* varray.h (union varray_data): Make basic_block_def and edge_def
	varrays garbage collectable.

2003-12-07  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_address_looks_like_offsetof): New.
	* c-common.h (c_address_looks_like_offsetof): Declare.
	* c-typeck.c (build_unary_op) <ADDR_EXPR>: Use it.  Don't lower
	address references not destined for offsetof.
	(c_expand_return): Only look inside ARRAY_REF and COMPONENT_REF
	when looking for returning address of local variable.
	* expr.c (expand_expr_1): Don't dereference size of unbounded arrays.
	* gimplify.c (gimplify_addr_expr): Only fold address of variable size
	array elements.
	* tree-simple.c (is_gimple_min_invariant): Also check
	is_gimple_variable before disallowing offset address for type.
	* tree-ssa-ccp.c (maybe_fold_offset_to_aggregate_ref): New.
	(maybe_fold_offset_to_component_ref): Use it.
	(maybe_fold_stmt_indirect, maybe_fold_stmt_plus): Likewise.
	(maybe_fold_offset_to_array_ref): Likewise.  Don't fail for division
	remainder non-zero.
	* varasm.c (initializer_constant_valid_p) <ADDR_EXPR>: Use
	handled_component_p and look inside references.
	<MINUS_EXPR>: Always look past widening casts.

2003-12-07  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (compute_dominance_frontiers): Don't assume that
	the first block has index 0.

2003-12-07  Jan Hubicka  <jh@suse.cz>

	* cgraph.c (create_edge): Rename to ...
	(cgraph_create_edge): ... this one; accept call_expr as operand.
	(cgraph_edge): New function
	(cgraph_remove_edge): Use edge as argument
	(cgraph_record_call, cgraph_remove_call): Kill.
	(clone_cgraphedge): New function.
	* cgraph.h (cgraph_edge): Add call_expr argument; add chain_next.
	(cgraph_record_call, cgraph_remove_call): Kill prototype.
	(cgraph_remove_call, cgraph_inline_p): Update prototype.
	(cgraph_clone_edge): Declare.
	* cgraphunit.c (cgraph_finalize_function): Update use of
	cgraph_remove_edge
	(record_call_1): Use cgraph_create_edge; record builtins too.
	(cgraph_create_edges): Accept node instead of decl.
	(cgraph_analyze_function): Update use cgraph_create_edges.
	(cgraph_inline_p): Accept edge.
	* tree-inline.c (inline_data): Replace decl and current_decl
	by node and current_node.
	(copy_body_r): Clone edges.
	(expand_call_inline): Do not create inlined edges.
	(optimize_inline_call): Set id->current_node, id->node.
	* tree-optimize.c (tree_rest_of_compilation): Update cgraph edges after
	compiling.

2003-12-07  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-loop.c (dump_file, dump_flags): Only declare with
	checking enabled.
	(tree_ssa_loop_opt): Mark arguments with ATTRIBUTE_UNUSED.

2003-12-07  Richard Henderson  <rth@redhat.com>

	* function.h (struct function): Add last_label_uid.
	* tree-cfg.c (set_bb_for_stmt): Use it.
	(delete_tree_cfg): Clear label_to_block_map.

	* gimple-low.c (lower_stmt_body): Export.
	(lower_stmt): Allow data to be null.
	* gimplify.c (declare_tmp_vars): Make static.
	(push_gimplify_context): Export.
	(pop_gimplify_context): Export.  Put the temps somewhere.
	(gimplify_body): Don't declare_tmp_vars here.
	* tree-flow.h, tree-simple.h: Update for new decls.

	* tree-mudflap.c (mf_build_string): New.
	(mudflap_c_function_decls): Push and pop gimplify context, don't
	gimplify here.  Dump pass 1.
	(mudflap_c_function_ops): Similarly.
	(mf_decl_cache_locals): Gimplify eveything as we go along.
	(mf_build_check_statement_for): Likewise.
	(mf_mostly_copy_tree_r): Remove.
	(mf_varname_tree): Use mf_build_string.
	(mf_file_function_line_tree): Rewrite.
	(mf_offset_expr_of_array_ref): Remove.
	(mx_xfn_indirect_ref): Remove.
	(mf_xform_derefs_1): New.
	(mf_xform_derefs): Rewrite to expect gimple.
	(mx_register_decls): Use build_function_call_expr.
	(mudflap_enqueue_constant): Use mf_build_string.
	* tree-optimize.c (tree_rest_of_compilation): Reorder mudflap bits.
	* tree-dump.c (dump_files): Split mudflap to parts 1 and 2.
	* tree.h (enum tree_dump_index): Likewise.

2003-12-06  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-loop.c: New.
	* Makefile.in (tree-ssa-loop.o): New.
	* common.opt (ftree-loop-optimize): Add.
	* flags.h (flag_tree_loop): Declare.
	* opts.c (decode_options): Enable flag_tree_loop at -O1.
	(common_handle_option): Handle OPT_ftree_loop_optimize.
	* timevar.def (TV_TREE_LOOP): New.
	* toplev.c (flag_tree_loop): New.
	(f_options): Add -ftree-loop-optimize.
	* tree-cfg.c (build_tree_cfg): Remove disabled loop optimizer
	initialization.
	(tree_make_forwarder_block): Update phi nodes.
	(tree_loop_optimizer_init): Don't call force_single_succ_latches.
	(tree_try_redirect_by_replacing_jump): Comment fix.
	* tree-dump.c (dump_files): Add .loop dump.
	* tree-flow.h (tree_ssa_loop_opt, set_phi_nodes): Declare.
	* tree-optimize.c (optimize_function_tree): Call tree_ssa_loop_opt.
	* tree.h (enum tree_dump_index): Add TDI_loop.
	* tree-flow-inline.h (set_phi_nodes): New.
	* doc/invoke.texi (-fdump-tree-loop, -ftree-loop-optimize): Document.

2003-12-05  Jeff Law  <law@redhat.com>

	* tree-dfa.c (mark_new_vars_to_rename): Change VARS_TO_RENAME to be
	a "bitmap" instead of an "sbitmap".  Callers updated.
	* tree-must-alias.c (promote_var): Likewise.
	(tree_compute_must_alias): Likewise.
	* tree-phinodes.c (remove_all_phi_nodes_for): Likewise.
	* tree-ssa-dom.c (tree_ssa_dominator_thread_jumps): Likewise.
	(tree_ssa_dominator_optimize): Likewise.
	(tree_ssa_dominator_optimize_1): Likewise.
	* tree-ssa-pre.c (pre_expression): Likewise.
	(tree_perform_ssapre): Likewise.
	* tree-ssa.c (rewrite_into_ssa): Likewise.
	(insert_phi_nodes): If VARS_TO_RENAME is zero, then examine
	each node to determine if we need to insert a PHI.
	(prepare_operand_for_rename): If VARS_TO_RENAME is zero, then
	assume the operand needs renaming.
	* tree-ssa-ccp.c (substitute_and_fold): Change VARS_TO_RENAME to
	be a "bitmap" instead of an "sbitmap".  Callers updated.
	(tree_ssa_ccp): Likewise.  Also make sure timevar_pop encloses
	entire function.
	(scalarize_modify_expr): Likewise.
	* tree-sra.c (create_scalar_copies): Change VARS_TO_RENAME to
	be a "bitmap" instead of an "sbitmap".  Callers updated.
	(tree_sra): Likewise.
	* tree-optimize.c (optimize_function_tree): Make VARS_TO_RENAME
	be a "bitmap" instead of an "sbitmap".
	* tree-flow.h: Update various prototypes.

2003-12-05  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (remove_useless_stmts_goto, remove_useless_stmts): Move
	handling of factored_computed_goto ...
	(disband_implicit_edges): ... here.

2003-12-05  Jan Hubicka  <jh@suse.cz>

	* tree-eh.c (tree_could_trap_p): Fix warning.
	* expr.c (expand_expr): Fix warning on uninitialized last.

2003-12-04  Jeff Law  <law@redhat.com>

	* tree-ssa.c (rewrite_trees): Do not unconditionally overwrite
	variables set by statements.  Let replace_variable do any
	required rewriting.

2003-12-04  Richard Henderson  <rth@redhat.com>

	* c-parse.in (primary): Use annotate_with_locus instead of
	STMT_LINENO for STMT_EXPR.
	* c-simplify.c (gimplify_stmt_expr): Likewise.

2003-12-04  Jan Hubicka  <jh@suse.cz>

	* tree-dump.c (dump_files): Reorder tailcall and mustalias
	* tree.h (tree_dump_index): Likewise.
	* tree-optimize.c (optimize_function_tree): Do tail call after mustalias.

2003-12-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (opf_none, opf_is_def, opf_no_vops): Change to #define.

2003-12-04  Canqun Yang  <canqun@nudt.edu.cn>

	* stor-layout.c (update_alignment_for_field): Export.
	* tree.h (update_alignment_for_field): Declare.

2003-12-03  Andrew Haley  <aph@redhat.com>

	* tree-eh.c (tree_could_trap_p): Add division instructions.
	* expr.c (expand_expr): Check the EH region of an expression and
	mark all the insns that result from its expansion with the
	appropriate REG_EH_REGION.

2003-12-03  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (verify_addr_expr, verify_stmt, tree_node_shared_p,
	verify_stmts):  New functions.
	(verify_flow_info): Remove PHI checking code.
	* tree-flow.h (verify_stmt, verify_stmts): Declare.
	* tree-inline.h (walk_tree, walk_tree_without_duplicates): Move
	prototypes ...
	* tree.h (walk_tree, walk_tree_without_duplicates): ... here.

2003-12-03  Jan Hubicka  <jh@suse.cz>
	    Diego Novillo <dnovillo@redhat.com>

	* tree-ssa.c (verify_def, verify_use, verify_phi_args): New static
	functions.
	(verify_ssa): New global function.
	* tree-flow.h (verify_ssa): Declare.
	* tree-optimize.c (optimize_function_tree): Call it.

2003-12-03  Diego Novillo  <dnovillo@redhat.com>

	* timevar.def (TV_TREE_SSA_VERIFY): New timer.
	* tree-sra.c (create_scalar_copies): Always mark the previous
	variables on the LHS for renaming.
	Do not emit unnecessary assignments from VA_ARG_EXPRs.
	(scalarize_modify_expr): Similarly, when scalarizing the LHS of a
	COMPONENT_REF assignment.
	* tree-must-alias.c (tree_compute_must_alias): Do not promote
	variables with hidden uses.
	* tree-ssa-ccp.c (set_rhs): When replacing the whole statement, reset
	SSA_NAME_DEF_STMT for all the SSA_NAMEs in vdef and def
	operands.

2003-12-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (opf_no_vops): New.
	(add_stmt_operand): Don't create virtual operands when opf_no_vops
	is passed in flags.
	(get_expr_operands): Set opf_no_vops flag before diving into the
	operand of an ADDR_EXPR node.

2003-12-03  Richard Henderson  <rth@redhat.com>

	* tree-simple.c (is_gimple_min_invariant): Disallow offset of
	address of a scalar.

	* c-parse.in (primary): Set STMT_LINENO on STMT_EXPR.
	* c-simplify.c (gimplify_stmt_expr): Be prepared for last_stmt
	to be null.

2003-12-03  Daniel Berlin  <dberlin@dberlin.org>

	Fix PR 13177
	* tree-ssa-pre.c (code_motion): Do phi nodes last, and rearrange
	how we decide what temporary to choose so that we get it right.

2003-12-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-dfa.c (get_expr_operands): Don't record VUSEs for invariant
	adresses.

2003-12-03  Brian Booth  <bbooth@redhat.com>

	* tree-pretty-print.c (dump_phi_nodes): Removed superfluous ampersand.

2003-12-03  Jeff Law  <law@redhat.com>

	* ggc-page.c: Resync with mainline sources.  Remove tree-ssa
	specific hack which disabled special GC pagesizes for 2 operand
	tree expressions.

	* tree-ssa.c (mark_def_sites): Call prepare_operand_for_rename
	on the VDEF_RESULT as well, providing a dummy uid argument.

	* tree-phinodes.c: Include rtl.h for ceil_log2.
	(ideal_phi_node_len): New function.
	(resize_phi_node): Make static.
	(make_phi_node): Use ideal_phi_node_len.
	(add_phi_arg): Likewise.
	* tree.h (resize_phi_node): Remove prototype.
	* Makefile.in (tree-phinodes.o): Depend on $(RTL_H).

2003-12-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c: (make_edges): Eliminate fallthru to exit.
	(make_ctrl_stmt_edges): Nonlocal goto handling moved to
	make_goto_expr_edges.
	(make_goto_expr_edges): Remove simple gotos.
	(cfg_remove_useless_stmts_bb): Goto removal cancelled.
	(cleanup_cond_expr_graph, cleanup_switch_expr_graph):
	Replaced by ...
	(cleanup_control_expr_graph): New.
	(cleanup_control_flow): Use it.
	(disband_implicit_edges): New.
	(tree_find_edge_insert_loc): Never insert before a control statement.
	(tree_split_edge, thread_jumps, tree_try_redirect_by_replacing_jump,
	tree_redirect_edge_and_branch): Work over no-gotos form.
	(tree_verify_flow_info): Check no-gotos form invariants.
	* tree-pretty-print.c (pp_cfg_jump, dump_implicit_edges): New.
	(dump_generic_bb_buff): Call dump_implicit_edges.
	* tree-flow.h (cleanup_cond_expr_graph, cleanup_switch_expr_graph):
	Declaration removed.
	(cleanup_control_expr_graph, delete_tree_ssa, disband_implicit_edges):
	Declare.
	* tree-optimize.c (tree_ssa_finish): New.
	(optimize_function_tree): Call it.
	* tree-ssa-dom.c (thread_jumps_walk_stmts, optimize_stmt): Use
	cleanup_control_expr_graph.
	* tree-ssa.c (delete_tree_ssa): Export, work even if there are no
	referenced_vars.
	(rewrite_out_of_ssa): Don't call it.

2003-12-03  Jan Hubicka  <jh@suse.cz>

	* tree-ssa.dom.c (tree_ssa_domionator_thread_jumps): Mark back edges.
	(thread_across_edge): Do not thread across loop headers.

	* Makefile.in (tree-optimize.o): Depend on cgraph.h
	* cgraph.h (cgraph_preserve_function_body_p): Declare.
	* cgraphunit.c (cgraph_preserve_function_body_p): New function.
	* tree-optimize.c: Include cgraph.h
	(clear_decl_rtl): Kill.
	(tree_rest_of_compilation): Use cgraph_preserve_function_body_p;
	do not clear DECL_RTL; do final ggc in the pushed context for nested
	functions;

2003-12-02  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Accept and pass down dominator
	walker structure instead of individual varrays.  Callers updated.
	(eliminate_redundant_computations): Likewise.
	(simplify_rhs_and_lookup_avail_expr): Likewise.  Cache and update
	a dummy COND_EXPR when querying the hash tables when transforming
	DIV/MOD into RSHIFT/BIT_AND or ABS_EXPR into NEG_EXPR.
	(dom_opt_walk_stmts): Don't reload the block data pointer each
	iteration of the loop.  Load it once outside the loop.

	* tree-dfa.c (cleanup_operand_arrays): Avoid creating a new
	varray for the vuse operands.

	* tree-ssa-dom.c (extract_range_from_cond): Use int_const_binop to
	avoid creating useless tree nodes.

	* tree-phinodes.c (add_phi_arg): If we receive a new node from
	resize_phi_node, then release the old node and update the PHI
	chain.

2003-12-02  Brian Booth  <bbooth@redhat.com>

	* tree-pretty-print.c (dump_phi_nodes): Added code to always show phi
	nodes of regular gimple scalars.
	(dump_generic_bb_buff): Removed condition upon which to show phi nodes.

2003-12-02  Jan Hubicka  <jh@suse.cz>

	* tree-optimize.c (optimize_function_tree): Invoke ggc_collect in
	between optimization passes.

2003-12-02  Daniel Berlin  <dberlin@dberlin.org>

	* tree-sra.c (can_be_scalarized_p): Print details about why something
	could not be scalarized to the dump file.

2003-12-01  Jeff Law  <law@redhat.com>

	* Makefile.in (OBJS-common): Add tree-phinodes.o.
	(tree-phinodes.o): Add dependencies.
	(GTFILES): Add tree-phinodes.c.
	* tree-phinodes.c: New file.
	* tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
	(add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
	(remove_phi_node, remove_all_phi_nodes_for): Similarly.
	* tree-ssa.c (init_tree_ssa): Initialize PHI node management.
	(delete_tree_ssa): Finalize PHI node management.
	* tree.c (dump_tree_statistics): Dump PHI node stats.
	(make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
	* tree.h (init_phinodes): Prototype.
	(fini_phinodes, release_phi_node): Likewise.
	(phinodes_print_statistics): Likewise.

2003-12-01  Richard Henderson  <rth@redhat.com>

	* tree-dfa.c (get_expr_operands): Don't handle PLUS_EXPR inside
	INDIRECT_REF.
	* tree-ssa-ccp.c (maybe_fold_offset_to_array_ref): Use int_const_binop.
	(maybe_fold_offset_to_component_ref): Likewise.
	(maybe_fold_stmt_indirect): Likewise.
	(maybe_fold_stmt_plus): Expand ARRAY_REF when seen with addend.
	* fold-const.c (int_const_binop): Export.
	* tree.h (int_const_binop): Declare.

2003-12-01  Jan Hubicka  <jh@suse.cz>

	* basic-block.h (tree_phi_root): New variable.
	* cfg.c: Include tree-flow.h.
	(compact_blocks): Compact tree_phi_root
	* tree-cfg.c (build_tree_cfg): Initialize tree_phi_root.
	(create_bb, remove_bb, delete_tree_cfg): Update tree_phi_root.
	* tree-dfa.c (tree_phi_root): Declare.
	(create_phi_node, add_phi_arg, remove_phi_node,
	remove_all_phi_nodes_for):  Always use accessor functions for
	getting, varray for setting phis.
	* tree-ssa-pre.c (code_motion): Likewsie.
	* tree-flow-inline.h (phi_nodes): Use varray.
	* tree-flow.h (bb_ann_d): Remove phi_nodes.

	* tree-ssanames.c (free_ssanames): Do not use deleteable GTY flag.

2003-11-30  Jan Hubicka  <jh@suse.cz>

	* tree-optimize.c (tree_rest_of_compilation): Move ggc_collect call to
	the end of function; keep clearing of DECL_SAVED_TREE to the cgraph
	code.

2003-11-30  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_inline_context): New structure.
	(cgrpah_mark_inline, cgraph_check_inline_limits): Use context
	instead of passing all arguments by hand.
	(cgraph_create_inline_context, cgraph_free_inline_context,
	cgraph_inline_context_set_caller, cgraph_inline_context_clear_caller,
	cgraph_inline_context_set_callee, cgrpah_inline_context_clear_callee,
	cgraph_recursive_inlining_p): New static function.
	(cgraph_decide_inline*):  Reorganize to use context.

2003-11-30  Paul Brook  <paul@nowt.org>

	* Makefile.in (GTFILES): Remove stray '\'.

2003-11-30  Daniel Berlin  <dberlin@dberlin.org>

	* c-config-lang.in: Move tree-alias-* from here
	* Makefile.in (GTFILES): To here.
	* tree-alias-ander.c: Include bitmap.h
	(andersen_function_call): Updated to take address of variables
	in an ADDR_EXPR in a CALL_EXPR.
	* tree-alias-common.h (struct tree_alias_ops): Update arguments to
	function_call.
	* tree-alias-type.h (struct alias_typevar_common): Add varnum.
	* tree-alias-common.c: Include bitmap.h, and function.h.
	s/global_var/pta_global_var/g.
	(addrargs): New static variable.
	(pta_global_var): Ditto.
	(find_func_decls): Remove.
	(find_func_aliases): Take one argument, update all callers.
	Handle (cast) [addr-expr] [var].
	Handle COMPONENT_REF of an  INDIRECT_REF.
	Pass info about ADDR_EXPR arguments to function_call function.
	(deal_with_call_aliasing): New function.
	(call_may_return): New function.
	(get_alias_var_decl): Call find_func_aliases on the DECL_INITIAL
	of a global var.
	Use ALIAS_TVAR_VARNUM, instead of VARRAY_ACTIVE_SIZE (alias_vars) - 1.
	(get_alias_var): Handle REALPART_EXPR and IMAGPART_EXPR.
	Return NULL in default case.
	(intra_function_call): Remove wrong code.
	(create_fun_alias_var): Use simple_assign, not addr_assign.
	Set up ALIAS_TVAR_VARNUM when creating an alias var.
	(create_fun_alis_var_ptf): Ditto on ALIAS_TVAR_VARNUM.
	(create_alias_var): Ditto.
	(create_alias_vars):  Build pta_global_var here.
	Walk unexpanded_var_list.
	Walk the statements in basic blocks.
	(delete_alias_vars): Correct ip_partial case.
	Free addrargs.
	(init_alias_vars): Create addrargs.

2003-11-29  Jan Hubicka  <jh@suse.cz>

	* Makefile.in (tree-ssanames.o): Depend on gt-tree-ssanames.h.
	(tree-eh.o): Depend on gt-tree-eh.h.
	(gr-tree-ssanames.h, gt-tree-eh.h): New targets.
	(GTFILES): Add tree-ssanames.c, tree-eh.c
	* tree-eh.c: Include ggc.h and gt-tree-eh.h
	(lower_eh_constructs): Allecate throw_stmt_table in ggc.
	* tree-ssanames.c: Include ggc.h and gt-tree-ssanames.h

	* function.h (struct function): Add saved_tree/saved_args.
	* toplev.c (rest_of_compilation): Move code to  clear cfun and
	DECL_SAVED_INSNS and call to ggc_collect to ...
	* tree-optimize.c (tree_rest_of_compilation): ... this function. Use
	cfun to save/restore function body.

2003-11-28  Richard Henderson  <rth@redhat.com>

	* gimplify.c (create_tmp_var_raw): Split out from create_tmp_var.
	(create_tmp_var): Use it.
	(create_tmp_alias_var): Remove.
	* tree-alias-common.c, tree-dfa.c: Use create_tmp_var_raw instead.
	* tree-simple.h: Update decls.

2003-11-28  Richard Henderson  <rth@redhat.com>

	* gimple-low.c (lower_function_body): Call lower_bind_expr
	to handle the outermost BIND_EXPR.

2003-11-28  Jan Hubicka  <jh@suse.cz>

	* tree-ssa.c (remove_annotations_r): Kill.
	(delete_tree_ssa): Remove annotations using statement walk;
	kill argument fndecl.
	(rewrite_out_of_ssa): Update call.

2003-11-27  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.c (register_ssa_partition): Abort if a virtual SSA
	version is registered.
	(create_ssa_var_map): Always process PHI nodes.
	* tree-ssa.c (Eliminate_virtual_phis): Rename from
	eliminate_extraneous_phis, and look specifically for virtuals.
	(rewrite_out_of_ssa): Eliminate virtual PHI nodes before building
	partitions.

2003-11-27  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-ccp.c (get_strlen): Mark the visited variables.
	(ccp_fold_builtin): Changed due to changed calling convention of
	get_strlen.

2003-11-26  Diego Novillo  <dnovillo@redhat.com>

	Revert

	2003-11-25  Jeff law  <law@redhat.com>

	    * Makefile.in (OBJS-common): Add tree-phinodes.o.
	    (tree-phinodes.o): Add dependencies.
	    * tree-phinodes.c: New file.
	    * tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
	    (add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
	    (remove_phi_node, remove_all_phi_nodes_for): Similarly.
	    * tree-ssa.c (init_tree_ssa): Initialize PHI node management.
	    (delete_tree_ssa): Finalize PHI node management.
	    * tree.c (dump_tree_statistics): Dump PHI node stats.
	    (make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
	    * tree.h (init_phinodes): Prototype.
	    (fini_phinodes, release_phi_node): Likewise.
	    (phinodes_print_statistics): Likewise.

2003-11-25  Jan Hubicka  <jh@suse.cz>

	* tree-mustalias.c (promote_var): Do not clear
	may_point_to_global_mem.

2003-11-25  Jeff law  <law@redhat.com>

	* domwalk.c (walk_dominator_tree): Indicate to the block local
	data initializer if the block local data is new or recycled.
	* domwalk.h (struct dom_walk_data): Corresponding changes.
	* tree-ssa-dom.c (dom_opt_initialize_block_local_data): Accept and use
	"recycled" argument.  For recycled structures, only clear varrays
	that have been initialized.  For new blocks, do not initialize
	varrays here.
	(dom_opt_finalize_block): When threading across edges, if the
	true/false varrays have not been initialized, then the limit is zero.
	Only clear block local varrays that have been initialized.
	(record_equivalences_from_incoming_edge): If necessary, initialize
	block local const_and_copies.
	(dom_opt_walk_stmts): If necessary, initialize block local
	stmts_to_rescan.
	(record_var_is_nonzero): If necessary, initialize block local
	nonzero_vars.
	(record_cond_is_true): If necessary, initialize block local
	true_exprs.
	(record_cond_is_false): If necessary, initialize block local
	false_exprs.
	(lookup_avail_expr): If necessary, initialize block local
	avail_exprs.
	(record_range): If necessary, initialize block local vrp_varaibles.
	* tree-ssa.c
	* tree-ssa.c (rewrite_initialize_block_local_data): Accept and use
	"recycled" argument.  For recycled structures, only clear varrays
	that have been initialized.  For new blocks, do not initialize
	varrays here.
	(rewrite_finalize_block): Only clear block local varrays that have
	been initialized.
	(register_new_def): If necessary, initialize block local defs.

	* tree-ssa-dom.c (get_eq_expr_value): Return a struct rather than
	a tree node.
	(record_equivalences_from_incoming_edge): Corresponding changes.
	(find_equivalent_equality_comparison): Use tree_int_cst_XXX rather
	then building and folding nodes.
	(simplify_cond_and_lookup_avail_expr): Likewise.

	* Makefile.in (OBJS-common): Add tree-phinodes.o.
	(tree-phinodes.o): Add dependencies.
	* tree-phinodes.c: New file.
	* tree-dfa.c (create_phi_node): Moved to tree-phinodes.o.
	(add_phi_arg, remove_phi_arg, remove_phi_arg_num): Similarly.
	(remove_phi_node, remove_all_phi_nodes_for): Similarly.
	* tree-ssa.c (init_tree_ssa): Initialize PHI node management.
	(delete_tree_ssa): Finalize PHI node management.
	* tree.c (dump_tree_statistics): Dump PHI node stats.
	(make_phi_node, resize_phi_node): Moved to tree-phinodes.o.
	* tree.h (init_phinodes): Prototype.
	(fini_phinodes, release_phi_node): Likewise.
	(phinodes_print_statistics): Likewise.

2003-11-25  Jan Hubicka  <jh@suse.cz>

	* tree-inline.c (save_body): New body
	* tree-inline.h (save_body): Declare.
	* tree-optimize.c (tree_rest_of_compilation): Save function tree
	properly.

2003-11-24  Richard Henderson  <rth@redhat.com>

	* gimplify.c (canonicalize_addr_expr): New.
	(gimplify_conversion): Use it.  Canonicalize after nop cast removal.
	* tree-simple.c (is_gimple_min_invariant): Remove STRING_CST cast
	special case.

2003-11-24  Jeff Law  <law@redhat.com>

	* flow.c (count_or_remove_death_notes_bb): New.  Extracted from
	count_or_remove_death_notes.
	(count_or_remove_death_notes): Use EXECUTE_IF_SET_IN_SBITMAP.

2003-11-24  Richard Henderson  <rth@redhat.com>

	PR 13174, PR 13143
	* gimplify.c (cpt_same_type): Allow different ARRAY_TYPEs with
	the same base type.

2003-11-24  Daniel Berlin  <dberlin@dberlin.org>

	Fix PR/13163
	* tree-ssa-pre.c (append_eref_to_block): Delete.
	(insert_euse_in_preorder_dt_order_1): Ditto.
	(insert_one_operand): Take an extra argument, because
	avdefs may need to be changed.
	(clear_all_eref_arrays): Use FOR_ALL_BB.
	(insert_occ_in_preorder_dt_order): Stop appending to bb eref arrays.
	Use FOR_ALL_BB.
	(insert_euse_in_preorder_dt_order): Rewrite to just build a new varray
	with only the EPHI's and EUSE's, and then sort it.
	(pre_expression): Don't use bb based erefs array when printing
	expressions.
	(split_critical_edges): Just use FOR_ALL_BB.
	(tree_perform_ssapre): Pre-split entry block successor edge if the
	successor block has multiple preds.

	* tree-flow.h (struct bb_ann_d): Remove erefs varray.

2003-11-24  Daniel Berlin  <dberlin@dberlin.org>

	* tree-cfg.c (cleanup_tree_cfg): FOR_EACH_BB -> FOR_ALL_BB when
	clearing dom children, because the entry block has dom_children
	too.
	* tree-ssa.c (build_dominator_tree): Ditto.

2003-11-24  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (compute_dominance_frontiers_1,
	compute_dominance_frontiers): Move from ssa.c.
	* tree-flow.h (compute_dominance_frontiers): Declare.
	* Makefile.in (tree-ssa.o, tree-ssa-live.o, tree-ssa-pre.o,
	tree-optimize.o): Don't depend on ssa.h.
	* tree-ssa.c: Don't include ssa.h.
	* tree-ssa-live.c: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-optimize.c: Likewise.

2003-11-24  Jan Hubicka  <jh@suse.cz>

	* fold-const.c (fold):  Do not return early when
	optimizing COMPONENT_REF and constant.

2003-11-24  Richard Henderson  <rth@redhat.com>

	* objc/objc-act.c (build_protocol_expr): Use convert instead of
	smashing TREE_TYPE.

2003-11-23  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.h (SSANORM_PERFORM_TER, SSANORM_COMBINE_TEMPS,
	SSANORM_REMOVE_ALL_PHIS): New flag macros.
	* tree-ssa.c (replace_variable): Return true if var was rewritten.
	(eliminate_extraneous_phis): Dump var map to file if checking triggers
	an abort.
	(rewrite_trees): Set modified_stmt if stmt was changed.
	(remove_ssa_form): Move more of rewrite_out_of_ssa to make it serve
	all the same functions based on new flags in tree-ssa-live.h.
	(rewrite_out_of_ssa): Call remove_ssa_form.

2003-11-23  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (tree_verify_flow_info): Check that ENTRY/EXIT block
	has no instructions associated with it.

2003-11-22  Jeff Law  <law@redhat.com>

	* tree-ssa-names.c (release_ssa_name): Use SSA_NAME_IN_FREE_LIST
	instead of checking SSA_NAME_DEF_STMT being null.
	* tree.h (SSA_NAME_DEF_STMT): Use chain field rather than the
	def_stmt field.
	(SSA_NAME_OCCURS_IN_ABNORMAL_PHI): Use existing flag from tree_common.
	(SSA_NAME_IN_FREE_LIST): Define.
	(struct tree_ssa_name): Kill DEF_STMT and OCCURS_IN_ABNORMAL_PHI fields.

2003-11-22  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-pretty-print.c (dump_generic_node): Remove superfluous ';'.

2003-11-22  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (simple-break-elim.o): Remove.
	(simple-goto-elim.o): Remove.
	(tree-dchain.o): Remove.
	* simple-break-elim.c: Remove.
	* simple-goto-elim.c: Remove.
	* tree-dchain.c: Remove.
	* tree-dchain.h: Remove.

2003-11-22  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (build_dfs_id_array_1): > should be >=
	(build_dfn_array): Ditto.

2003-11-21  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-dfa.o): Add dependency on $(TREE_DUMP_H)
	* tree-dfa.c: Include tree-dump.h
	(compute_alias_sets): Call dump_function_to_file.
	(may_access_global_mem_p): Check if the base address of _REF nodes
	may point to global memory.

	* cfgcleanup.c (try_crossjump_to_edge): Initialize newpos1 and
	newpos2.

2003-11-21  Jeff Law  <law@redhat.com>

	Revert:

	2003-11-21  Jan Hubicka  <jh@suse.cz>

		* tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
		* tree-must-alias.c (tree_compute_must_alias): promote pointers.
		(find_addressable_vars):  Deal with complex constant
		expressions; do not clear may_point_to_global_mem.

2003-11-21  Jeff Law  <law@redhat.com>

	* Makefile.in (domwalk.o): Depend on $(GGC_H).
	* domwalk.c: Include ggc.h.
	(walk_dominator_tree): Manage allocation/deallocation and
	pushing/popping of the toplevel block data pointer here.
	Use callback to initialize the block local data.
	(init_walk_dominator_tree): New function.
	(fini_walk_dominator_tree): Likewise.
	* domwalk.h (struct dom_walk_data): Add callback to initialize
	block local data.  Add field for sizeof block local data.
	Add "private" field free_block_data.
	(init_dominator_tree, fini_dominator_tree): Prototype.
	* tree-ssa-dom.c (dom_opt_initialize_local_data): New function.
	(tree_ssa_dominator_optimize_1): Initialize new fields in the
	dominator walker structure.  Initialize and finalize the dominator
	walker.  Slightly reorder code to make it more readable..
	(dom_opt_initialize_block): No longer deal with allocation and
	initialization of block local data.
	(dom_opt_finalize_block): Similarly for deallocation of block
	local data.
	* tree-ssa.c (rewrite_block_data): New structure.
	(rewrite_initialize_block_local_data): New function.
	(rewrite_initialize_block): No longer deal with allocation and
	initialization of block local data.
	(rewrite_into_ssa): Initialize new fields in the dominator walker
	structure.  Initialize and finalize the dominator walker.
	(rewrite_initialize_block): No longer deal with allocation and
	initialization of block local data.
	(rewrite_optimize_stmts): Deal with changes in the dominator
	walker structure.
	(rewrite_finalize_block): No longer with deallocation of block
	local data.

	* tree-dfa.c (add_vdef, cleanup_voperand_arrays): Use NUM_VDEFS.
	(mark_new_vars_to_rename, collect_dfa_status_r): Likewise.
	* tree-pretty-print.c (dump_vops): Likewise.
	* tree-sra.c (create_scalar_copies): Likewise.
	* tree-ssa-dce.c (stmt_useful_p, process_worklist): Likewise.
	* tree-ssa-live.c (create_ssa_var_map): Likewise.
	(calculate_live_on_entry): Likewise.
	* tree-ssa-pre.c (process_left_occs_and_kills): Likewise.
	* tree-ssa.c (mark_def_sites, rewrite_stmt): Likewise.
	* tree.h (NUM_VDEFS): Define.
	* tree-ssa-ccp.c (visit_stmt): Use NUM_VDEFS.  Fix thinko in last
	change.
	(initialize): Use NUM_VDEFS.

	* tree-dfa.c (add_vdef): Revamp to handle new method for
	recording vdefs.
	(cleanup_operand_arrays): Similarly.
	* tree-sra.c (create_scalar_copies): Similarly.
	* tree-ssa-ccp.c (visit_stmt, initialize): Similarly.
	* tree-ssa-dce.c (stmt_useful_p, process_worklist): Similarly.
	* tree-ssa-dom.c (cprop_into_stmt): Similarly.
	(record_equivalences_from_stmt): Similarly.
	* tree-ssa-live.c (create_ssa_var_map): Similarly.
	(calculate_live_on_entry): Similarly.
	* tree-ssa.c (mark_def_sites, rewrite_stmt): Similarly.
	* tree-ssa-pre.c (process_left_occr_and_kills): Similarly.
	* tree-inline.c (estimate_num_insns_1): Kill VDEF_EXPR.
	* tree-pretty-print.c (dump_generic_node) Kill VDEF_EXPR.
	(dump_vops): Dump VDEFs here.
	* tree.c (build_vdef_expr): Kill.
	* tree.h (build_vdef_expr): Kill prototype.
	(VDEF_RESULT, VDEF_OP): Revamp to handle new method for recording
	vdefs.
	* tree.def (VDEF_EXPR): Kill.

	* tree-cfg.c (cfg_remove_useless_stmts): Set both VAR and VAL to
	NULL anytime one of them is determined to be invalid.

2003-11-21  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.c (compact_var_map): Fix typo.  Clear correct field.
	(calculate_live_on_entry): Remove unneeded stmt.
	* tree-ssa-live.h (version_to_var): New.  Return variable associated
	with a specific SSA version.
	* tree-ssa.c (eliminate_build): Add check that ignored results don't
	have important arguments.  Allow ignored results.
	(coalesce_abnormal_edges): Allow non-relevant results to be ignored.
	(eliminate_extraneous_phis): Allow non-relevant results.  Check that
	no important arguments are being missed.
	(coalesce_vars): Non-partition variables are allowed now, just ignored.
	(rewrite_trees): New.  Split out from rewrite_out_of_ssa.  Perform tree
	rewriting step.
	(remove_ssa_form): New.  Allow rewriting of just specified variables.
	(rewrite_out_of_ssa): Use rewrite_trees and reorganize slightly to
	accommodate typechecking in eliminate_extraneous_phis.

2003-11-21  Jan Hubicka  <jh@suse.cz>

	* tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.
	* tree-must-alias.c (tree_compute_must_alias): promote pointers.
	(find_addressable_vars):  Deal with complex constant expressions;
	do not clear may_point_to_global_mem.

2003-11-21  Jan Hubicka  <jh@suse.cz>

	* parser.c (cp_parser_postfix_expression): Initialize 's' to
	NULL_TREE.

2003-11-20  Richard Henderson  <rth@redhat.com>

	* Makefile.in (bitmap.o-warn, caller-save.o-warn, combine.o-warn,
	cgraphunit.o-warn, c-semantics.o-warn, emit-rtl.o-warn, expr.o-warn,
	fold-const.o-warn, genattrtab.o-warn, regmove.o-warn, tree.o-warn,
	varasm.o-warn, f/expr.o-warn, profile.o-warn): Remove.
	* bitmap.c (bitmap_first_set_bit): Abort if no non-zero word found.
	(bitmap_last_set_bit): Likewise.
	* combine.c (get_pos_from_mask): Always set *plen.

2003-11-20  Richard Henderson  <rth@redhat.com>

	* tree-dfa.c (get_expr_operands): Remove handling of PLUS_EXPR
	inside INDIRECT_REF.

2003-11-20  Diego Novillo  <dnovillo@redhat.com>

	* tree-nomudflap.c (nogo): Fix prototype.

2003-11-20  Richard Henderson  <rth@redhat.com>

	* except.c (output_function_exception_table): Strip nops.
	* gimplify.c (gimplify_addr_expr): Kill missing cast workaround.
	(cpt_same_type, check_pointer_types_r): New.
	(gimplify_body): Call it.
	* tree-inline.c (insert_decl_map): New.
	(remap_decl, remap_type, remap_block, copy_body_r,
	initialize_inlined_parameters, declare_return_variable,
	remap_save_expr, mark_local_for_remap_r): Use it.

2003-11-20  Frank Ch. Eigler  <fche@redhat.com>

	libstdc++/11696
	* c-pragma.c (handle_pragma_redefine_extname): Define always.
	(init_pragma): Activate #pragma redefine_extname for mudflap.

	* tree-inline.c (copy_tree_r): Propagate mf_marked-ness.
	* tree-mudflap.c (mudflap_c_function): Break into new
	_decls and _ops functions.
	(mudflap_c_function_decls): Avoid unnecessary tree copying.
	(mudflap_c_function_ops): Ditto.  Gimplify explicitly only for
	tree dumping.
	* tree-nomudflap.c: Add new stub functions.  Simplify error
	message emission throughout.
	* tree-mudflap.h: Corresponding changes.
	* tree-optimize.c (tree_rest_of_compilation): Call the _decl
	instrumentation before gimplification and ssa optimizations;
	call the _ops instrumentation after ssa optimizations.

2003-11-20  Diego Novillo  <dnovillo@redhat.com>

	Initial fix for PR optimization/12747

	* Makefile.in (OBJS): Add tree-sra.o
	* common.opt (ftree-sra): Add.
	* flags.h (flag_tree_sra): Declare.
	* gimplify.c (gimplify_addr_expr): Set TREE_INVARIANT
	when producing and address expression for a DECL node.
	* opts.c (decode_options): Enable SRA at -O1.
	(common_handle_option): Handle -ftree-sra.
	* timevar.def (TV_TREE_SRA): New timer.
	* toplev.c (flag_tree_sra): Define.
	* tree-cfg.c (stmt_ends_bb_p): Declare extern.
	(bsi_replace): Add boolean argument to specify whether to
	preserve EH region information.  Update all callers.
	(bsi_commit_edge_inserts): Also check the edge from ENTRY_BLOCK_PTR
	to basic block 0.
	Move loop body ...
	(bsi_commit_edge_inserts_1): ... here.
	* tree-dump.c: Add dump for SRA pass.
	* tree.h (enum tree_dump_index): Modify accordingly.
	(STRIP_USELESS_TYPE_CONVERSION): Define.  Update all callers to
	tree_ssa_useless_type_conversion.
	* tree-eh.c (add_stmt_to_eh_region): New function.
	* tree-flow.h (stmt_ends_bb_p): Declare.
	(add_stmt_to_eh_region): Declare.
	(tree_sra): Declare.
	(enum bsi_iterator_update): Mirror entries in
	enum tsi_iterator_update.
	* tree-optimize.c (optimize_function_tree): Call SRA pass
	after must-alias.
	* tree-sra.c: New file.
	* doc/invoke.texi: Document -ftree-sra and -fdump-tree-sra.

2003-11-20  Andrew Macleod  <amacleod@redhat.com>

	* tree-ssa.c (check_replaceable): Return false if the LHS is a
	DECL_HARD_REGISTER.

2003-11-20  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (set_rhs): Replace with an empty statement when
	the replacement has no side effects.

2003-11-20  Jeff Law  <law@redhat.com>

	* Makefile.in (OBJS-common): Kill tree-ssa-copyprop.o.
	(tree-ssa-copyprop.o): Kill dependencies clause.
	* common.opt (tree-copyprop): Kill option.
	* flags.h (flag_tree_copyprop): Kill.
	* opts.c (decode_options): Don't set flag_tree_copyprop.
	(common_handle_option): Kill handling of -ftree-copyprop.
	* timevar.def (TV_TREE_COPYPROP): Kill.
	* toplev.c (flag_tree_copyprop): Kill.
	(lang_independent_options): Kill -ftree-copyprop.
	* tree-dump.c (dump_files): Kill .copyprop dump.
	* tree-flow.h (tree_ssa_copyprop): Kill prototype.
	(propagate_copy): Move prototype.
	* tree-optimize.c (optimize_function_tree): Kill -ftree-copyprop stuff.
	* tree.h (tree_dump_index): Kill TDI_copyprop.
	* tree-ssa-copyprop.c: Kill.
	* tree-ssa-dom.c (propagate_copy): Moved here from tree-ssa-copyprop.c.

	* tree-ssanames.c (free_ssanames): No longer a varray.
	(init_ssanames, make_ssa_name, release_ssa_name): Corresponding changes.

2003-11-20  Steven Bosscher  <stevenb@suse.de>

	* tree-ssanames.c (ssanames_print_statistics): Use ISO function
	declaration.  Print unsigned ints, not usinged longs.

2003-11-18  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (rename_1): This should be static.
	(append_eref_to_block): Don't gc allocate.
	(clear_all_eref_arrays): Free the array rather than
	clear them.
	(rename_1): Ditto on both counts.
	(free_expr_info): Free the arrays.
	(collect_expressions): Don't gc allocate the arrays.

2003-11-18  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (insert_one_operand): Handle self-referential
	ephi's properly.

2003-11-19  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (true_exprs, false_exprs): New hash tables.
	(nonzero_vars): New varray.
	(dom_walk_block_data): Add true_exprs, false_exprs and nonzero_vars.
	(get_value_for, set_value_for): Accept additional argument indicating
	which table to use.  Callers updated.
	(tree_ssa_dominator_optimize_1): Initialize and wipe our new hash
	tables and varray appropriately.
	(dom_opt_initialize_block): Initialize new block local varrays for
	true expressions, false expressions and nonzero vars.  Update call
	to record_equivalences_from_incoming_edge.
	(dom_opt_finalize_block): Put equivalences from taken edges
	into the true_exprs and false_exprs hash tables.  Restore global
	state for true_exprs, false_exprs and nonzero_vars  too.
	(record_equivalences_from_incoming_edge): Accept dom_walk structure
	instead of a gazillion varrays.  Pass down block local
	true_exprs, false_exprs and nonzero_vars varrays to various children.
	(optimize_stmt):  Accept block local nonzero_vars argument.  Pass
	new varrays down to record_equivalences_from_stmt.
	(thread_jumps_walk_stmt): Pass new varrays down to
	record_equivalences_from_stmt.
	(dom_opt_walk_stmt): Pass new varrays down to optimize_stmt.
	(dump_dominator_optimizer_statistics): Dump new hash tables.
	(record_cond_is_true, record_cond_is_false): Record info into
	the true/false hash tables/varrays instead of the main expression
	varrays.  Don't create useless tree nodes.
	(record_var_is_nonzero): New function.
	(record_equivalences_from_stmt): Don't generate useless tree nodes.
	(lookup_avail_expr): Consult nonzero_vars and the true/false
	expression tables as well.
	(get_eq_expr_value): Record local true/false expressions in the
	local true/false varrays rather than the main local expression
	varray.
	(true_false_expr_hash, true_false_expr_eq): New functions.

	* Makefile.in (OBJS-sommon): Add tree-ssanames.o.
	(tree-ssanames.o): Add dependencies.
	* tree-dfa.c (remove_phi_node): Release SSA_NAME expression when
	we remove the PHI node.
	(remove_all_phi_nodes_for): Similarly.
	* tree-ssa.c (prepare_operand_for_rename): Similarly when we
	strip away an SSA_NAME expression from an operand.
	(init_tree_ssa): Call the SSA_NAME initializer.
	(delete_tree_ssa): Call the SSA_NAME finalizer.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Clear the
	const_and_copies and vrp_data virtual arrays.
	* tree-ssanames.c: New file for management of SSA_NAME expressions.
	* tree.h: Prototypes for functions exported by tree-ssanames.c.
	* tree-flow.h, tree-ssa-ccp.c, tree-ssa-dce.c: Use highest_ssa_version
	rather than next_ssa_version.
	* tree-ssa-dom.c, tree-ssa-live.c, tree-ssa.c: Similarly.
	* tree.c (dump_tree_statistics): Call into tree-ssaname statistics
	dumper too.
	(make_ssa_name): Kill.  Now in tree-ssanames.c

2003-11-18  Richard Henderson  <rth@redhat.com>

	* tree.c (recompute_tree_invarant_for_addr_expr): Split out from ...
	(build1): ... here.
	* tree.h: Declare it.
	* gimplify.c (gimplify_addr_expr): Use it.
	* tree-ssa-ccp.c (maybe_fold_offset_to_array_ref): Split out
	from fold_indirect_refs_r.
	(maybe_fold_stmt_indirect): Likewise.
	(maybe_fold_offset_to_component_ref): New.
	(maybe_fold_stmt_plus): New.
	(fold_stmt_r): Rename from fold_indirect_refs_r.
	(fold_stmt): Strip more useless type conversions.

2003-11-18  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (dump_function_to_file): Mind when cfun is null.

2003-11-18  Diego Novillo  <dnovillo@redhat.com>

	Revert

	2003-11-18  Jan Hubicka  <jh@suse.cz>

		* tree-cfg.c (cfg_remove_useless_stmts_bb): Avoid crash.
		* tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.

	2003-11-18  Jan Hubicka  <jh@suse.cz>

		* Makefile.in (sibcall.o): Kill.
		(tree-tailcall.o): Add except.h dependency
		* sibcall.c: Kill.
		(purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
		* calls.c (purge_reg_equiv_notes,
		purge_mem_unchanging_flag) ... here.
		(expand_call): Do not produce placeholders; do
		not deal with tail recursion; update
		equivalencies after sibcall production.
		* toplev.c (rest_of_handle_sibling_calls): Kill.
		(rest_of_compialtion): Do not use rest_of_handle_sibling_calls.
		* tree-dump.c (dump_files): Add tail2
		* tree-flow.h (tree_optimize_tail_calls): Update prototype.
		* tree-optimize.c (optimize_function_tree): Do
		tail optimization twice.
		* tree-tailcall.c: Inlucde except.h
		(suitable_for_tail_call_opt_p): New.
		(optimize_tail_call): Add opt_tailcalls argument;
		optimize tailcalls.
		(tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
		* tree.h (CALL_EXPR_TAILCALL): New.
		(tree_dump_index): Add tail2

2003-11-18  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (cfg_remove_useless_stmts_bb): Avoid crash.
	* tree-dfa.c (get_expr_operands): Fix handling of CALL_EXPR.

2003-11-18  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (optimize_function_tree): Disable tail
	call optimizations.

2003-11-18  Jan Hubicka  <jh@suse.cz>

	* Makefile.in (sibcall.o): Kill.
	(tree-tailcall.o): Add except.h dependency
	* sibcall.c: Kill.
	(purge_reg_equiv_notes, purge_mem_unchanging_flag): Move to ...
	* calls.c (purge_reg_equiv_notes, purge_mem_unchanging_flag) ... here.
	(expand_call): Do not produce placeholders; do not deal with tail
	recursion; update equivalencies after sibcall production.
	* toplev.c (rest_of_handle_sibling_calls): Kill.
	(rest_of_compialtion): Do not use rest_of_handle_sibling_calls.
	* tree-dump.c (dump_files): Add tail2
	* tree-flow.h (tree_optimize_tail_calls): Update prototype.
	* tree-optimize.c (optimize_function_tree): Do tail optimization twice.
	* tree-tailcall.c: Inlucde except.h
	(suitable_for_tail_call_opt_p): New.
	(optimize_tail_call): Add opt_tailcalls argument; optimize tailcalls.
	(tree_optimize_tail_calls): Add opt_tailcalls/pass arguments.
	* tree.h (CALL_EXPR_TAILCALL): New.
	(tree_dump_index): Add tail2

2003-11-18  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (thread_across_edge): Lose block_avail_exprs argument.
	Callers updated.  Pass NULL for block_avail_exprs in call to
	lookup_avail_expr.  Record both the condition and the inverted
	condition when threading across an edge.

2003-11-18  Richard Henderson  <rth@redhat.com>

	* tree-ssa.c (tree_ssa_useless_type_conversion): Use TYPE_MAIN_VARIANT
	when compariing pointer types too.

2003-11-18  Jan Hubicka  <jh@suse.cz>

	* tree-dump.c (dump_files): Reorder tail calls.
	* tree-optimize.c (optimize_function_tree): Likewise
	* tree-tailcall.c (optimize_tail_call, eliminate_tail_call): Remove
	variable tmpvars; update SSA.
	(suitable_for_tail_opt_p): Do not give up because of static variables.
	(find_tail_calls):  Track return values in SSA graph.
	* tree.c (make-phi_node): Do not create new SSA name when operand
	already is.
	* tree.h (enum tree_dump_index): Reorder tail call.

2003-11-17  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_call_expr): Change gimple_test_f argument to
	return bool type.
	(mark_decls_volatile_r): New local function.
	(gimplify_expr): Make gimple_test_f return bool type.
	Call mark_decls_volatile_r when gimplifying VA_ARG_EXPR.
	* tree-dfa.c (struct walk_state): Remove field is_va_arg_expr.
	Update all callers.
	(opf_force_vop): Remove.  Update all users.
	(add_stmt_operand): Re-structure to add real operands only for
	GIMPLE register variables.
	(find_vars_r): Don't handle VA_ARG_EXPR nodes.
	(add_referenced_var): Also assign a UID to variables with hidden
	uses.
	Call is_gimple_call_clobbered to determine if a variable is call
	clobbered.
	(get_memory_tag_for): Mark memory tags volatile and static.
	* tree-flow.h (struct var_ann_d): Remove field is_in_va_arg_expr.
	Update all users.
	* tree-simple.c (is_gimple_*): Change return type to bool.  Update
	all users.
	(is_gimple_reg_type): Return true only for non aggregate types.
	(is_gimple_non_addressable_1): New local function.
	(is_gimple_reg): Call it.
	(is_gimple_non_addressable): New function.
	(is_gimple_call_clobbered): New function.
	* tree-simple.h (is_gimple_*): Change return type to bool.

2003-11-17  Jason Merrill  <jason@redhat.com>

	PR c++/11266
	* gimplify.c (gimple_add_tmp_var): Also make sure
	seen_in_bind_expr isn't set.
	(mostly_copy_tree_r): Don't copy a TARGET_EXPR.
	(gimplify_target_expr): Only expand a TARGET_EXPR the first time
	we see it.

2003-11-17  Richard Henderson  <rth@redhat.com>

	* tree-pretty-print.c (dump_generic_node): Use %u not %x for
	printing DECL_UID.

2003-11-16  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_add_case_label): Use create_artificial_label.
	* tree-simple.h (create_artificial_label): Move decl ...
	* tree.h: ... here.

2003-11-16  Richard Henderson  <rth@redhat.com>

	PR c++/12770
	* gimple-low.c (lower_stmt_body): Take a tree, not a tree*.
	(lower_stmt): Handle EH nodes.
	(lower_bind_expr): Remove fixme.
	(block_may_fallthru): Move from tree-eh.c.  Handle COND_EXPR,
	BIND_EXPR, and TRY_FINALLY_EXPR.
	(lower_cond_expr): Use it.
	* tree-eh.c (collect_finally_tree): Ignore COND_EXPR and BIND_EXPR.
	(replace_goto_queue_cond_clause): New.
	(replace_goto_queue_1): Use it.  Split out statement_list handling.
	(replace_goto_queue_stmt_list): New.
	(-block_may_fallthru): Move to gimple-low.c.
	(lower_eh_constructs_1): Ignore BIND_EXPR.
	* tree-flow.h (block_may_fallthru): Declare.

	* tree-dump.c (dump_files): Exchange .eh and .lower passes.
	* tree-optimize.c (tree_rest_of_compilation): Likewise.
	* tree.h (enum tree_dump_index): Likewise.

2003-11-16  Jason Merrill  <jason@redhat.com>

	* gimplify.c (mostly_copy_tree_r): Don't walk into a BLOCK.

	* tree-inline.c (walk_tree): Don't walk into the BIND_EXPR_VARS
	of a BIND_EXPR.
	* c-common.c (c_walk_subtrees): Don't walk into the decl of a
	DECL_STMT.

	PR optimization/11269
	* dwarf2out.c (gen_subprogram_die): Generate a DIE for a named
	return value.
	(loc_descriptor_from_tree): Treat RESULT_DECL like VAR_DECL.
	(add_location_or_const_value_attribute): Likewise.
	(add_bound_info): Likewise.
	(gen_decl_die): Likewise.

2003-11-16  Jason Merrill  <jason@redhat.com>

	* c-pretty-print.c (debug_c_tree): Restore removed fn.
	* diagnostic.h: Declare it.

	* tree-pretty-print.c (dump_generic_node): Use DECL_UID when
	dumping anonymous decls.

2003-11-16  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (last_and_only_stmt): New.
	* tree-flow.h (last_and_only_stmt): Declare.
	* tree-ssa-dom.c (thread_across_edge): Use it.

	* tree-cfg.c (tree_block_forwards_to): Don't check for empty stmts.
	(tree_forwarder_block_p): Likewise.
	* tree-dfa.c (get_stmt_operands): Likewise.
	* tree-ssa-ccp.c (set_rhs): Likewise.
	* tree-ssa-dom.c (optimize_stmt): Likewise.
	* tree-ssa.c (rewrite_stmt): Likewise.

2003-11-16  Richard Henderson  <rth@redhat.com>

	* tree.h (LABEL_DECL_UID): Rename from LABEL_DECL_INDEX.
	* tree-flow.h (bsi_remove): Declare.
	* tree-flow-inline.h (bsi_remove): Move ...
	* tree-cfg.c (set_bb_for_stmt): Don't re-set LABEL_DECL_UID.
	Verify that a label isn't already in a block before adding it.
	(bsi_remove): Move from tree-flow-inline.h, clear bb.
	* tree-pretty-print.c (dump_generic_node): Use LABEL_DECL_UID if set.

2003-11-15  Richard Henderson  <rth@redhat.com>

	* function.c (clear_block_marks): Rename from reorder_blocks_0, export.
	* function.h (clear_block_marks): Declare.
	* gimple-low.c (lower_function_body): Use it.
	(lower_bind_expr): Ensure we don't link blocks into the tree twice.
	* gimplify.c (gimplify_body): Keep old bind_expr at top level if
	possible.

2003-11-14  Richard Henderson  <rth@redhat.com>

	* tree-ssa-pre.c (split_critical_edges): Reimplement.  Call
	tree_split_edge directly.

2003-11-14  Jason Merrill  <jason@redhat.com>

	* tree-eh.c (do_return_redirection): Assign directly to the
	RESULT_DECL of a function which returns in memory.

2003-11-14  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (pre_stats): Add ephis_current member.
	(create_ephi_node): Use xmalloc, not ggc_alloc_tree.
	(clear_all_eref_arrays): Free the ephis here.
	(expr_phi_insertion): Don't append the ephis to the erefs array.
	(insert_occ_in_preorder_dt_order): Move building/freeing of dfn
	array so that it only occurs once per function..
	(rename_1): Ditto on the dfs_id array.
	(ephi_use_pool): New alloc pool.
	(add_ephi_use): Pool allocate these things, rather than
	ggc_alloc'ing them.
	(insert_euse_in_preorder_dt_order_1): Use ephi_at_block to put the
	ephi in the list.
	(pre_expression): Don't PRE when we only have 1 occurrence.
	(expr_lexically_eq): Make inline.
	(names_match_p): Move closer to first use.
	(tree_perform_ssapre): Alloc and free the ephi_use_pool.
	Make stat printing per-expression.
	Add checking that we freed all ephis.

2003-11-14  Andrew MacLeod  <amacleod@redhat.com>

	* common.opt (ftree-ter): Document new option.
	* flags.h (flag_tree_ter): Add new flag.
	* fold-const.c (invert_truthvalue): Don't ignore cast to BOOLEAN_TYPE.
	* opts.c (decode_options): Option -ftree-ter defaults to on.
	(common_handle_option): Add processing for flag_tree_ter.
	* toplev.c (flag_tree_ter): Initialize to 0.
	(lang_independent_options f_): Add -ftree-ter flag.
	* tree-ssa-live.c (init_var_map): Initialize ref_count to 0.
	(delete_var_map): Free ref count if allocated.
	(register_ssa_partition): Add "is_use" parameter for reference counting.
	(create_ssa_var_map): Add flag and code for calculating ref counts.
	* tree-ssa-live.h (struct _var_map): Add ref_count field.
	(SSA_VAR_MAP_REF_COUNT): Define flag.
	(version_ref_count): Function to retreive ref_count.
	* tree-ssa.c (replace_variable): If an expression vector is passed in,
	use replacement expression instead of mapped variable when available.
	(struct value_expr_d): New structure for value lists.
	(struct temp_expr_table_d): Structure used to build an expression
	replacement table.
	(new_temp_expr_table): New. Create a new TER (Temporary Expression
	Replacement) table.
	(free_temp_expr_table): New. Free a TER table.
	(new_value_expr): New. Allocate a value list element.
	(free_value_expr): New. Free a value list element.
	(find_value_in_list): New. Find a value in a list.
	(add_value_to_list): New. Add a value to a list if not already present.
	(remove_value_from_list): New. Remove a value from a list.
	(add_dependance): New. Add a dependency to an expression.
	(check_replaceable): New. Check if a stmt is a candidate for TER. Add
	to active list and create dependancies if so.
	(finish_expr): New. Remove an expression from TER consideration.
	(mark_replaceable): New. Finish a TER expression as a valid replacement.
	(kill_expr): New. Finish dependent TER expressions as not replaceable.
	(kill_virtual_exprs): New. Finish any TER expressions dependent on a
	virtual operand as not replaceable.
	(find_replaceable_in_bb): New. Process a basic block for TER expression.
	(find_replaceable_exprs): New. Entry point for TER expression finder.
	(dump_replaceable_exprs): New. output list of replaceable expressions.
	(rewrite_out_of_ssa): Build TER table if requested, and use it.

2003-11-14  Andreas Jaeger  <aj@suse.de>

	* c-semantics.c (find_reachable_label): Use C90 function
	declaration.

2003-11-14  Jason Merrill  <jason@redhat.com>

	PR middle-end/12526
	* tree-cfg.c (call_expr_flags): Move to calls.c.
	* tree-flow.h: Move prototype to tree.h.

	PR c++/13033
	* c-simplify.c (gimplify_c_loop): Wrap the increment in a
	CLEANUP_POINT_EXPR.

	* tree-dfa.c (get_stmt_operands) <ASM_EXPR>: A memory clobber
	clobbers all call-clobbered variables.   Clobber clobber.

	* gimplify.c (canonicalize_component_ref): Remove redundant call
	to recalculate_side_effects.

2003-11-14  Richard Henderson  <rth@redhat.com>

	PR c++/12751
	* tree-eh.c (struct leh_tf_state): Add outer.
	(lower_try_finally, lower_cleanup): Set it.
	(lower_try_finally_fallthru_label): New.
	(honor_protect_cleanup_actions): Use it.
	(lower_try_finally_copy, lower_try_finally_switch): Likewise.

	* tree-eh.c (collect_finally_tree): Complete manual tailrecurse
	transformation.

2003-11-14  Richard Henderson  <rth@redhat.com>

	* gimplify.c (voidify_wrapper_expr): Don't clobber TREE_TYPE of
	statements in a STATEMENT_LIST.  Be prepared for an empty list.

2003-11-14  Steven Bosscher  <stevenb@suse.de>

	* jump.c (never_reached_warning): Remove function.
	* rtl.h (never_reached_warning): Don't declare it.
	* cfgrtl.c (never_reached_warning): Don't call it.
	* cse.c (never_reached_warning): Ditto.

2003-11-13  Jeff Law  <law@redhat.com>

	* tree-cfg.c (bsi_replace): Restore accidentally removed code.

	* tree-cfg.c (cfg_remove_useless_stmts_bb): Also detect useless
	var->var copies created by the out-of-ssa translation.

2003-11-13  Steven Bosscher  <stevenb@suse.de>

	PR middle-end/11514
	* tree-inline.c (walk_tree): Handle PLACEHOLDER_EXPR.

2003-11-13  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (cfg_remove_useless_stmts_bb): Initialize stmt.

2003-11-13  Jan Hubicka  <jh@suse.cz>

	* calls.c (special_function_p): Do not check for ECF_MALLOC.
	(flags_from_decl_or_type):  Use special_function_p.
	(expand_call): Remove call to special_function_p.
	* tree-cfg.c (notice_special_calls, clear_special_calls): New functions.
	(remove_useless_stmts): Use clear_special_calls.
	(remove_useless_stmts_1): Use notice_special_calls.
	* tree-flow.h (notice_special_calls, clear_special_calls): New functions.
	* tree-ssa-dce.c (remove_dead_stmts): Use clear_special_calls and
	notice_special_calls..

	* gimplify.c (gimplify_expr): Check labels.

	* tree-cfg.c (tree_verify_flow_info): Check labels.

	* tree-cfg.c (make_exit_edges): Do not create edges for const
	functions.
	(update_call_expr_flags): Fix.

2003-11-12  Diego Novillo  <dnovillo@redhat.com>

	(declare_inlined_vars): New local function.
	(initialize_inlined_parameters): Call it.
	(expand_call_inline): Call it.

2003-11-13  Steven Bosscher  <stevenb@suse.de>

	PR optimization/12640
	* tree-ssa-ccp.c (get_strlen): Don't follow the UD chain
	of a PHI argument if the DEF stmt for the argument is
	the PHI itself.

2003-11-12  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
	    Jeff Law  <law@redhat.com>

	* tree-cfg.c (cfg_remove_useless_stmts): New function.
	(cfg_remove_useless_stmts_bb): Likewise.
	* tree-flow.h (cfg_remove_useless_stmts): Prototype.
	* tree-ssa.c (rewrite_out_of_ssa): Use cfg_remove_useless_stmts
	instead of remove_useless_stmts.

2003-11-12  Richard Henderson  <rth@redhat.com>

	* Makefile.in (OBJS-common): Add tree-iterator.o.
	(expr.o): Depend on tree-iterator.h.
	(GTFILES): Add tree-iterator.c.
	* basic-block.h (struct basic_block_def): Replace head_tree_p
	and end_tree_p with stmt_list.
	(tree_bb_root): New.
	(create_bb): Don't declare.
	* c-common.c (c_warn_unused_result): Handle STATEMENT_LIST.
	* c-simplify.c (c_gimplify_stmt): Don't rationalize_compound_expr.
	* cfg.c (entry_exit_blocks): Adjust for member changes.
	(compact_blocks): Manage tree_bb_root.
	* expr.c (expand_expr_1): Handle STATEMENT_LIST.
	* gimple-low.c: Update for tree_stmt_iterator changes.
	(lower_cond_expr): Use expr_only.  Notice empty conditionals.
	* gimplify.c (append_to_statement_list_1): Create and
	manage statement_list nodes.
	(foreach_stmt): Remove.
	(wfl_locus): Remove.
	(annotate_all_with_locus_1): Merge into...
	(annotate_all_with_locus): ... here.  Iterate over the
	statement list directly.
	(voidify_wrapper_expr): Handle STATEMENT_LIST.
	(gimplify_return_expr): Likewise.
	(gimplify_loop_expr): Likewise.
	(shortcut_cond_r, shortcut_cond_expr): Likewise.
	(gimplify_cleanup_point_expr): Likewise.
	(gimple_build_eh_filter): Create statement list bodies.
	(gimplify_bind_expr): Likewise.
	(gimplify_switch_expr): Likewise.
	(gimplify_cond_expr): Likewise.
	(gimplify_compound_expr): Handle void expressions as well.
	(gimplify_statement_list): New.
	(gimple_push_cleanup): Gimplify the WITH_CLEANUP_EXPR operand.
	(gimplify_stmt): Ensure non-null result.
	(gimplify_to_stmt_list): New.
	(gimplify_expr): Use gimplify_compound_expr, gimplify_statement_list,
	gimplify_to_stmt_list as appropriate.
	(gimplify_body): Fix creation of outer BIND_EXPR.
	* tree-cfg.c (tree_bb_root): New.
	(build_tree_cfg): Initialize it.  Update for make_blocks changes.
	(factor_computed_gotos): Use create_bb directly.
	(make_blocks): Rewrite to use statement lists.
	(append_stmt_to_bb, prepend_stmt_to_bb): Remove.
	(create_bb): Make static.  Add stmt_list argument.  Don't allow
	null after argument.  Set tree_bb_root.
	(make_edges): ENTRY block successor is FALLTHRU.
	(remove_useless_stmts_warn_notreached): Handle STATEMENT_LIST.
	(struct rus_data): Add last_goto.
	(remove_useless_stmts_cond): Clear it.  Zap empty conditionals.
	Use expr_only for simple statment elimination.
	(remove_useless_stmts_tf): Clear last_goto.  Use TREE_SIDE_EFFECTS
	instead of IS_EMPTY_STMT.  Use append_to_statement_list instead of
	munging to COMPOUND_EXPR.
	(remove_useless_stmts_tc): Clear last_goto.  Use TREE_SIDE_EFFECTS.
	(remove_useless_stmts_goto): Set last_goto.
	(remove_useless_stmts_label): New.  Kill goto-next-label.
	(remove_useless_stmts_1): Reorg to handle STATEMENT_LIST.
	(remove_bb): Simplify block removal.
	(remove_bsi_from_block): Kill.
	(tree_block_forwards_to): Tidy bsi loops.  Do not create
	block label here.
	(tree_cfg2dot): Update for bb->stmt_list.
	(delete_tree_cfg): Clear tree_bb_root.
	(set_bb_for_stmt): Handle STATEMENT_LISTs.
	(bsi_insert_before, bsi_insert_after): Re-implement on TSIs.
	(bsi_move_after, bsi_move_before, bsi_move_to_bb_end): Likewise.
	(bsi_replace): Likewise.
	(tree_find_edge_insert_loc): New, split from ...
	(bsi_insert_on_edge_immediate): ... here.
	(bsi_commit_edge_inserts): Use it.  Add all stmts at once.
	(bsi_insert_on_edge): Use statement lists.
	(tree_split_edge): Position new block correctly.  Deal with
	fallthrough to EXIT.
	(tree_verify_flow_info): Do not check block order vs statement chain.
	(tree_make_forwarder_block): Update create_bb call, fix edge flags.
	(thread_jumps): Call tree_redirect_edge_and_branch directly.
	(tree_block_label): Don't return a NONLOCAL_LABEL.
	(tree_redirect_edge_and_branch_1): Rename from s/_1//.  Take an
	argument to use ssa_redirect_edge or redirect_edge_succ.  Use
	tree_split_edge instead of bsi_insert_on_edge_immediate.
	(tree_redirect_edge_and_branch): New.
	(remove_stmt, first_exec_stmt, bsi_init, bsi_next_in_bb): Kill.
	(bsi_start, bsi_last, bsi_prev, bsi_from_tsi): Kill.
	(bsi_update_from_tsi, bsi_link_after): Kill.
	* tree-eh.c (collect_finally_tree): Handle STATEMENT_LIST.
	(replace_goto_queue_1): Likewise.
	(replace_goto_queue): Don't use walk_tree.
	(do_return_redirection): Create statement lists.
	(do_goto_redirection): Likewise.
	(block_may_fallthru_last): Fold into...
	(block_may_fallthru): ... here.
	(frob_into_branch_around): Use append_to_statement_list.
	(honor_protect_cleanup_actions): Likewise.
	(lower_try_finally_nofallthru): Likewise.
	(lower_try_finally_onedest): Likewise.
	(lower_try_finally_copy): Likewise.
	(lower_try_finally_switch): Likewise.
	(lower_try_finally): Likewise.
	(lower_catch): Likewise.
	(lower_eh_filter): Likewise.
	(lower_eh_constructs_1): Handle STATEMENT_LIST.
	* tree-flow-inline.h (BSI_NUM_ELEMENTS, bsi_list_p): Remove.
	(new_bsi_list, empty_bsi_stack, FOR_EACH_BSI_IN_REVERSE): Remove.
	(FOR_EACH_STMT_IN_REVERSE): Remove.
	(bsi_start, bsi_last, bsi_end_p): Re-implement based on TSIs.
	(bsi_next, bsi_prev, bsi_stmt, bsi_stmt_ptr, bsi_remove): Likewise.
	* tree-flow.h (block_stmt_iterator): Likewise.
	* tree-inline.c (copy_statement_list): New.
	(copy_body_r): Use it, and append_to_statement_list.
	(initialize_inlined_parameters): Use append_to_statement_list.
	(expand_call_inline): Likewise.
	(gimple_expand_calls_inline): New.
	(expand_calls_inline): Use it.
	(walk_tree, unsave_r): Handle STATEMENT_LIST.
	(add_stmt_to_compound): Remove.
	* tree-iterator.c: New file.
	* tree-iterator.h: Re-implement based on STATEMENT_LIST.
	* tree-mudflap.c (mf_decl_cache_locals): Don't
	rationalize_compound_expr.
	* tree-optimize.c (optimize_function_tree): Make static.
	Rechain statements from blocks before deleting the cfg.
	* tree-pretty-print.c (dump_generic_node): Handle STATEMENT_LIST,
	update for change in tree_stmt_iterator wrt COMPOUND_EXPR.
	(dump_generic_node): Dump lowered COND_EXPR on a single line.
	* tree-simple.c (is_gimple_stmt): Handle STATEMENT_LIST.
	* tree-simple.h (foreach_stmt_fn, foreach_stmt): Remove.
	(gimplify_to_stmt_list): Declare.
	(alloc_stmt_list, free_stmt_list): Declare.
	* tree-ssa-dce.c (should_remove_dead_stmt): Rename from
	remove_dead_stmt; return bool if statement should be removed.
	(remove_dead_stmts): Update to match.
	* tree-ssa-live.c (build_tree_conflict_graph): Don't use
	FOR_EACH_STMT_IN_REVERSE.
	* tree-ssa-pre.c (reaching_def): Tidy BSI usage.
	(insert_one_operand, collect_expressions): Likewise.
	* tree.c (tree_size): Handle STATEMENT_LIST.
	(copy_node): Abort on STATEMENT_LIST.
	(expr_first, expr_last): Move to tree-iterator.c.
	(expr_length): Remove.
	(tree_node_structure): Handle STATEMENT_LIST.
	(tsi_link_before, tsi_link_after, tsi_delink): Move to tree-iterator.c.
	(tsi_link_chain_before, tsi_link_chain_after): Merge into non-chain.
	(tsi_new_stmt_list, tsi_stmt_list_head, body_is_empty): Kill.
	* tree.def (STATEMENT_LIST): New.
	* tree.h (STATEMENT_LIST_HEAD, STATEMENT_LIST_TAIL): New.
	(struct tree_statement_list_node): New.
	(struct tree_statement_list): New.
	(enum tree_node_structure_enum): Add TS_STATEMENT_LIST.
	(union tree_node): Add stmt_list.
	(expr_length): Remove.
	(expr_only): New.
	(add_to_compound_expr, body_is_empty): Remove.
	(optimize_function_tree): Remove.

2003-11-12  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-flow.h (remove_useless_vars): Declare.
	(expand_var_p): Declaration removed.
	* tree-ssa.c (rewrite_out_of_ssa): Call remove_useless_vars.
	* tree-cfg.c (dump_function_to_file): Update dumping of variables.
	* gimple-low.c (expand_var_p): Made static.
	(remove_useless_vars): New.
	(expand_used_vars): Expand all variables in the
	cfun->unexpanded_var_list.

2003-11-11  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_gimplify_stmt): Fix botched removal of
	rationalize_compound_expr calls.

	* c-semantics.c (build_stmt): Set TREE_SIDE_EFFECTS.
	* c-simplify.c (c_gimplify_stmt): Return a gimplify_status;
	mind the status from subroutines to avoid re-gimplification.
	(c_build_bind_expr): Do not call gimplify_stmt.
	(gimplify_c_loop): Don't create a loop_expr; fully gimplify.
	(gimplify_block, gimplify_cleanup, gimplify_expr_stmt,
	gimplify_for_stmt, gimplify_while_stmt, gimplify_do_stmt,
	gimplify_if_stmt, gimplify_switch_stmt, gimplify_return_stmt,
	gimplify_decl_stmt, gimplify_compound_literal_expr,
	gimplify_stmt_expr): Return a gimplify_status.  In most cases,
	don't do local gimplification of sub-structures.
	(gimplify_decl_stmt): Use append_to_compound_expr when we care
	about the result value.
	(gimplify_stmt_expr): Use append_to_statement_list_force and
	re-gimplify so that voidify_wrapper_expr can work.
	(finish_bc_block): Don't append to a non-list.
	(c_gimplify_expr): Pass back the gimplify_status of subroutines.
	* c-common.h (c_gimplify_stmt): Update decl.
	* gimplify.c (append_to_statement_list_1): Make sure list_p is
	never null after call.
	(append_to_compound_expr): New.
	* tree-simple.h (append_to_compound_expr): Declare.

2003-11-11  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_addr_expr): Clear, not copy, TREE_SIDE_EFFECTS.

2003-11-11  Richard Henderson  <rth@redhat.com>

	PR c/13014
	* c-simplify.c (gimplify_if_stmt): Remove short circuit.
	* tree-cfg.c (struct rus_data): Add has_label.
	(remove_useless_stmts_warn_notreached): New.
	(remove_useless_stmts_cond): Warn for deleted conditionals.
	(remove_useless_stmts_tc): Warn for deleted catches.
	(remove_useless_stmts_1): Set has_label.

2003-11-11  Jan Hubicka  <jh@suse.cz>

	* gimplify.c (gimplify_call_expr):  Unset side effects for
	pure functions too.
	* tree-cfg.c (update-call_expr_flags): New function.
	(remove_useless_stmts_and_vars_1): Use it.
	(is_ctrl_altering_stmt):  Pure/const calls never alter the CFG.
	* tree-ssa-dce.c (stmt_useful_p): Check side effects flag
	on call exprs.

2003-11-11  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (has_label_p): New function.
	(tree_verify_flow_info): New checks.
	* tree-optimize.c (optimize_function_tree): Call verify_flow_info
	before de-SSA.

2003-11-11  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (struct rus_data): Rename from rusv_data.
	Remove remove_unused_vars.
	(remove_useless_stmts*): Rename from remove_useless_stmts_and_vars*.
	(remove_useless_stmts_bind): Do not remove dead variables.
	(remove_useless_stmts): Kill remove_unused_vars argument.
	* tree-flow.h (remove_useless_stmts): Update.
	* tree-optimize.c (tree_rest_of_compilation): Update call.
	* tree-ssa.c (rewrite_out_of_ssa): Likewise.

2003-11-11  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
	    Diego Novillo  <dnovillo@redhat.com>

	* basic-block.h (brief_dump_cfg): Declare.
	* cfg.c (dump_cfg_bb_info, brief_dump_cfg): New.
	* diagnostic.h (dump_generic_node): Declaration changed.
	(print_generic_stmt_indented): Declare.
	* gimple-low.c (expand_var_p): New.
	(expand_used_vars): Use it.
	* tree-cfg.c (struct cfg_stats_d): Remove num_failed_bind_expr_merges
	field.
	(remove_bb): Only dump whole block with TDF_DETAILS.
	(tree_dump_bb): Use dump_generic_bb.
	(dump_tree_cfg): Use brief_dump_cfg and dump_function_to_file.
	(dump_cfg_function_to_file): Merged into dump_function_to_file,
	removed.
	(dump_cfg_stats): Do not dump cfg_stats.num_failed_bind_expr_merges.
	(dump_function_to_file): Moved from tree-dump.c, merged with
	dump_cfg_function_to_file.
	* tree-dump.c (dump_function_to_file): Removed.
	* tree-flow.h (dump_cfg_function_to_file): Declaration removed.
	(dump_generic_bb, expand_var_p): Declare.
	* tree-must-alias.c (tree_compute_must_alias): Replace
	dump_cfg_function_to_file by dump_function_to_file.
	* tree-ssa-ccp.c (tree_ssa_ccp): Ditto.
	* tree-ssa-copyprop.c (tree_ssa_copyprop): Ditto.
	* tree-ssa-dce.c (tree_ssa_dce): Ditto.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Ditto.
	* tree-ssa-pre.c (tree_perform_ssapre): Ditto.
	* tree-ssa.c (rewrite_into_ssa, rewrite_out_of_ssa): Ditto.
	* tree-tailcall.c (tree_optimize_tail_calls): Ditto.
	* tree-pretty-print.c (print_declaration, print_generic_decl): Don't
	use flags argument, change spacing.
	(dump_block_info): Removed.
	(dump_generic_bb_buff, dump_generic_bb, print_generic_stmt_indented,
	dump_bb_header, dump_bb_end, dump_phi_nodes): New functions.
	(dump_vops): Change spacing, don't dump phi nodes.
	(do_niy, print_generic_stmt, print_generic_expr, print_declaration,
	print_struct_decl, print_call_name): Add argument to
	the dump_generic_node calls.
	(last_bb): Removed.
	(dump_generic_node): Print semicolons at end of statements correctly.
	Don't print bb related stuff.
	(maybe_init_pretty_print): Don't initialize last_bb.
	* tree-ssa.c (rewrite_out_of_ssa): Do not allow virtual operands to
	be shown in the .optimized dump.

2003-11-11  Daniel Berlin  <dberlin@dberlin.org>

	PR optimization/12936
	* tree-ssa-pre.c (expr_phi_insertion): Remove unused code that was
	causing ICE's for VA_ARG_EXPR.

2003-11-10  Richard Henderson  <rth@redhat.com>

	* gimple-low.c (lower_function_body): Lower bind_expr in place.
	(lower_stmt): Only incr for stmts we're skipping.
	(lower_cond_expr): Detect empty if.

2003-11-10  Steven Bosscher  <stevenb@suse.de>

	* toplev.c (rest_of_decl_compilation): Use the location of the
	declaration for error messages.

2003-11-10  Richard Henderson  <rth@redhat.com>

	* gimplify.c (add_stmt_to_compound, add_tree): Remove.
	(append_to_statement_list_1, append_to_statement_list): New.
	(append_to_statement_list_force): New.
	(gimplify_loop_expr): Take pre_p.
	(gimplify_expr): Provide it.
	* tree-simple.h: Update.

	* c-simplify.c: Replace add_tree with append_to_statement_list.
	* gimplify.c, tree-mudflap.c: Likewise.

2003-11-10  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_warn_unused_result): Restructure to use iterator
	on COMPOUND_EXPR only.

2003-11-09  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (tree_verify_flow_info): Fix checking of order of basic
	blocks over code.

2003-11-09  Richard Henderson  <rth@redhat.com>

	* basic-block.h (struct edge_def): Turn insns into a union.
	* cfgrtl.c (insert_insn_on_edge): Update to match.
	(commit_one_edge_insertion, commit_edge_insertions): Likewise.
	(commit_edge_insertions_watch_calls): Likewise.
	* gcse.c (reg_killed_on_edge, bypass_block): Likewise.
	* profile.c (instrument_edges): Likewise.
	* rtlanal.c (hoist_insn_to_edge): Likewise.
	* tree-cfg.c (PENDING_STMT): Likewise.
	(SET_PENDING_STMT): Remove.
	(bsi_commit_edge_inserts): Update to match.

2003-11-08  Jan Hubicka  <jh@suse.cz>

	* fold.c (nondestructive_fold_binary_to_constant): Fix typo.
	* fold-const.c (fold_relational_const): Check for side effects.

2003-11-07  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* basic-block.h (create_bb): Declaration changed.
	* tree-cfg.c (create_bb): Enable creating a block on specified place.
	(make_blocks, tree_split_edge, tree_make_forwarder_block): Use it.
	(tree_verify_flow_info): Check bbs are in the correct order.

	* tree-cfg.c (find_unreachable_blocks): Remove now incorrect comments.

	* tree-ssa.c (rewrite_out_of_ssa): Don't remove annotations from
	statements before the final dump.

2003-11-07  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-tailcall.c (struct tailcall): New.
	(bb_optimize_tail_calls, find_tail_call_p): Removed.
	(eliminate_tail_call): Get the tailcall from the struct tailcall.
	(optimize_tail_call, find_tail_calls): New.
	(tree_optimize_tail_calls): Use them.

2003-11-07  Jan Hubicka  <jh@suse.cz>

	* gimple-low.c (simple_goto_p): Move to...
	* tree-cfg.c: (simple_goto_p): ... here;
	(nonlocal_goto_p): New.
	(is_computed_goto): Rename to ...
	(computed_goto_p): ... this; make global.
	(factor_computed_gotos, make_blocks):  Update calls.
	(make_ctrl_stmt_edges): Add edge for nonlocal labels; use new functions.
	* tree-flow.h (is_coputed_goto): Kill.
	(nonlocal_goto_p, simple_goto_p, computed_goto_p): Declare.
	* tree-ssa-ccp (visit_stmt): Update.

2003-11-07  Jan Hubicka  <jh@suse.cz>

	* fold-const.c (tree_expr_nonzero_p): Fix typo.

	* fold-const.c (tree_expr_nonzero_p): New function.
	(fold_relational_const): Use it.
	(nondestructive_fold_binary_to_constant): Allow casts in address
	expressions.

2003-11-06  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (tree_block_label):  Cleanup.

2003-11-06  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (fast_a_dominates_b): New function.
	(build_dfs_id_array_1): Ditto.
	(build_dfs_id_array): Ditto.
	(load_modified_phi_result): Use fast_a_dominates_b.
	(rename_1): Ditto.
	Also use build_dfs_id_array, and remove some duplicate ephi_at_block
	calls.
	(insert_occ_in_preorder_dt_order): Remove some duplicate ephi_at_block
	calls.
	(pre_expression): Ditto.
	Also free dfs_id arrays here.
	(collect_expressions): Remove duplicate bsi_stmt calls.

2003-11-06  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (count_stmts_in_bb): Removed.
	(set_var_phis): Only call bb_for_stmt once.
	(insert_one_operand): Remove endtree, endtreep, a lot of special handling
	no longer needed.  Remove insert_done.
	(collect_expressions): Enable INDIRECT_REF and SSA_NAME handling.

2003-11-06  Steven Bosscher  <stevenb@suse.de>

	* tree-cfg.c (STRIP_CONTAINERS): Remove.

2003-11-06  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (cleanup_cond_expr_graph):  Clean edge flags.

2003-11-06  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-dump.c (dump_options): Remove TDF_LINENO from all setting.

2003-11-06  Jan Hubicka  <jh@suse.cz>

	* builtins.c (expand_builtin_strstr, expand_builtin_strchr,
	expand_builtin_strrchr, expand_builtin_strpbrk,
	simplify_builtin_strstr, simplify_builtin_strrchr,
	simplify_builtin_strpbrk): Add missing casts.

2003-11-05  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* diagnostic.h (print_generic_decl): Declare.
	* tree-cfg.c (dump_cfg_function_to_file): Dump variables in
	unexpanded_var_list.
	* tree-pretty-print.c (print_generic_decl): New function.

2003-11-05  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (gimplify.o): Add function.h dependency.
	* c-call-graph.c (construct_call_graph): Modify build_tree_cfg call.
	* gimple-low.c (record_vars): Export.
	(lower_function_body): Remove the topmost BIND_EXPR.
	* gimplify.c: Include function.h.
	(gimple_add_tmp_var): Record temporaries in the
	cfun->unexpanded_vars_list if available.
	* tree-cfg.c (build_tree_cfg): Work without the topmost BIND_EXPR.
	(dump_cfg_function_to_file): New.
	(dump_tree_cfg): Use dump_cfg_function_to_file.
	* tree-dump.c (dump_function_to_file): Work without the topmost
	BIND_EXPR.
	* tree-flow.h (build_tree_cfg): Declaration changed.
	(dump_cfg_function_to_file, record_vars): Declare.
	* tree-optimize.c (optimize_function_tree, tree_rest_of_compilation):
	Work without the topmost BIND_EXPR.
	* tree-must-alias.c (tree_compute_must_alias): Use
	dump_cfg_function_to_file.
	* tree-ssa-ccp.c (tree_ssa_ccp): Ditto.
	* tree-ssa-copyprop.c (tree_ssa_copyprop): Ditto.
	* tree-ssa-dce.c (tree_ssa_dce): Ditto.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Ditto.
	* tree-ssa-pre.c (tree_perform_ssapre): Ditto.
	* tree-ssa.c (rewrite_into_ssa, rewrite_out_of_ssa): Ditto.
	* tree-tailcall.c (tree_optimize_tail_calls): Ditto.
	* tree.h (optimize_function_tree): Declaration changed.

2003-11-03  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (handle_bb_creation): Removed.
	(redo_dominators): Removed.
	(insert_one_operand): Remove code to handle bb creation, since all
	critical edges are now pre-split.
	(finalize_2): Remove redo_dominators related code.
	(pre_expression): Return 1 if we exited early because nothing happened.
	(split_critical_edges): Do fake variable assignments instead, because
	it works. return true if we actually split an edge.
	(tree_perform_ssapre): Remove redo_dominators code.

2003-11-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* function.h (struct function): New field unexpanded_var_list.
	* gimple-low.c (unexpanded_var_list): Removed.
	(record_vars, expand_used_vars): Use cfun->unexpanded_var_list.
	* tree-flow.h (unexpanded_var_list): Declaration removed.

	* gimplify.c (should_carry_locus_p): New.
	(annotate_all_with_locus_1): Use it.  Do not annotate empty
	statements.

2003-11-03  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (tree_try_redirect_by_replacing_jump): Do not use
	succesor_block.

2003-11-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-pretty-print.c (dump_block_info): Add flags parameter.
	Only show line number when asked to.
	(dump_generic_node): Pass flags to dump_block_info.

2003-11-03  Jan Hubicka  <jh@suse.cz>

	* cfghooks.h (redirect_edge_and_branch hook): Make it return edge.
	* cfgrtl.c (cfg_layout_redirect_edge_and_branch,
	rtl_redirect_edge_and_branch, try_redirect_by_replacing_jump):
	Update to new interface.
	* tree-cfg.c (tree_cfg_hooks): Move to end of file; set
	redirect_edge_and_branch and redirect_edge_and_branch_force.
	(thread_jumps): Use redirect_edge_and_branch.
	(tree_block_label): new; break out of thread_edge.
	(tree_try_redirect_by_replacing_jump): New.
	(thread_edge): Rename to tree_redirect_edge_and_branch; deal sanely
	with unusual edges; preserve profile.
	(tree_redirect_edge_and_branch_force): New.
	* tree-flow.h (ssa_redirect_edge): Declare.
	* tree-ssa.dom.c (tree_ssa_dominator_optimize): Use redirect_edge_and_branch.
	* tree-ssa.c (ssa_redirect_edge): New.

2003-11-03  Jeff Law  <law@redhat.com>

	* domwalk.h (struct dom_walk_data): New field "global_data".
	* tree-ssa-dom.c (tree_ssa_dominator_optimize_1): Initialize new
	"global_data" field.
	* tree-flow.h (enum need_phi_state): New enumeration.
	(var_ann_d): Add bitfield for need_phi_state.
	* tree-ssa.c (mark_def_sites_global_data): New structure to hold
	global data for mark_def_sites dominator walk.
	(mark_def_sites): Revamp to be called via the dominator walker.
	(set_def_block): Update need_phi_state for the variable as needed.
	(set_livein_block): Similarly.
	(rewrite_into_ssa): Use dominator walker to call mark_def_sites.
	Delay freeing dominance info.  Kill "globals" bitmap.
	(insert_phi_nodes): No longer need "globals" bitmap.  Use
	need_phi_state in variable's annotation to determine if a PHI
	may be needed.

	* tree-ssa-dom.c (dom_opt_finalize_block): Try to thread across the
	edges leaving COND_EXPR nodes which are leafs in the dominator
	tree.
	(record_equivalences_from_incoming_edge): Do not set EQ_EXPR_VALUE
	unless the block's single predecessor contains parent_block_last_stmt.

2003-11-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-dump.c (dump_options): Add TDF_LINENO.
	* tree-pretty-print.c (dump_generic_node): Print line number for
	statements if asked to.
	* tree.h (TDF_LINENO): New.
	* doc/invoke.texi (lineno): Document.

2003-11-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* expr.c (expand_vars, expand_var): Split of ...
	(expand_expr_1): ... here.
	* expr.h (expand_var): Declare.
	* gimple-low.c (lower_function_body, lower_stmt, lower_bind_expr):
	Eliminate BIND_EXPRs.
	(expand_used_vars): New.
	* tree-alias-common.c (create_alias_vars): Walk variables in blocks.
	* tree-cfg.c (make_bind_expr_blocks): Removed.
	(make_blocks, build_tree_cfg, factor_computed_gotos): Don't handle
	BIND_EXPRs.
	(assign_vars_to_scope, successor_block, NEXT_BLOCK_LINK): Removed.
	(make_edges, make_exit_edges): Don't use successor_block.
	(remove_useless_stmts_and_vars_goto): Don't expect NEXT_BLOCK_LINK
	to be set.
	(bsi_init, bsi_next_in_bb, bsi_from_tsi): Don't handle BIND_EXPRs.
	(replace_stmt): Don't create BIND_EXPRs.
	* tree-flow.h (struct var_ann_d): Removed field scope.
	(struct stmt_ann_d): Removed fields scope and scope_level.
	(propagate_copy): Declaration changed.
	(fixup_var_scope): Removed.
	* tree-must-alias.c (tree_compute_must_alias): Consider DECL_NONLOCAL
	vars call clobbered.
	* tree-optimize.c (tree_rest_of_compilation): Call expand_used_vars.
	* tree-ssa-copyprop.c (move_var_to_scope, fixup_var_scope): Removed.
	(copyprop_stmt): Call to propagate_copy changed.
	(propagate_copy): Don't update scope.
	* tree-ssa-dom.c (cprop_into_stmt): Call to propagate_copy changed.
	(eliminate_redundant_computations): Don't call fixup_var_scope.
	* tree-ssa.c (insert_copy_on_edge): Don't update scope.

2003-11-02  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-inline.c (walk_tree): Tail recursion optimized for
	COMPOUND_EXPRs.
	* tree-eh.c (collect_finally_tree): Ditto.

2003-11-02  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-optimize.c (optimize_function_tree): Removed duplicate call of
	lower_function_body.  Moved call of reset_block_changes ...
	(tree_rest_of_compilation) ... here.  Reset the scope to top before
	expanding function end.

2003-11-01  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* basic-block.h (BB_CONTROL_STRUCTURE): Removed.
	* tree-cfg.c (struct cfg_stats_d): Field num_merged_cases removed.
	(make_blocks, make_bind_expr_blocks, append_stmt_to_bb, bsi_link_after,
	build_tree_cfg, factor_computed_gotos, prepend_stmt_to_bb,
	remove_stmt, replace_stmt): Don't set parent.
	(set_parent_stmt, add_stmt_to_bb, find_contained_blocks,
	blocks_unreachable_p, remove_blocks, remove_unreachable_block,
	move_outgoing_edges, merge_tree_blocks, remap_stmts): Removed.
	(REMOVE_ALL_STMTS, REMOVE_NO_STMTS, REMOVE_NON_CONTROL_STRUCTS,
	REMOVE_CONTROL_STRUCTS): Removed.
	(remove_bb): Code to handle control structures removed.
	(tree_block_forwards_to): Don't stop due to CASE_LABEL_EXPRs.
	(tree_dump_bb): Don't print parent.  Print only BIND_EXPRs in slim
	form.
	(dump_tree_cfg): Don't count merged case labels.
	(is_ctrl_structure): Removed.
	(stmt_starts_bb_p): Don't handle CASE_LABEL_EXPRs.
	(tree_verify_flow_info): Don't check BB_CONTROL_STRUCTURE.
	* tree-flow-inline.h (parent_block, parent_stmt): Removed.
	* tree-flow.h (struct stmt_ann_d): Remove parent_stmt field.
	(parent_stmt, parent_block, is_ctrl_structure): Declarations removed.
	* tree-pretty-print.c (dump_generic_node): Don't handle lowered
	COND_EXPRs specially.
	* tree-ssa-ccp.c (visit_stmt): Don't check is_ctrl_structure.

2003-10-31  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (record_equivalences_from_stmt): Restore lost code
	to create equivalences from BIT_IOR_EXPR.

	* tree-ssa-dom.c (thread_jumps_walk_stmts): Go ahead and optimize
	a COND_EXPR with a compile-time constant condition.

2003-10-31  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (optimize_function_tree): Fix comment
	describing SSA pass after DOM2.

2003-10-31  Diego Novillo  <dnovillo@redhat.com>

	Fix PR optimization/12825
	* tree-optimize.c (optimize_function_tree): Run SSA renamer after
	second DOM pass.

2003-10-30  Richard Henderson  <rth@redhat.com>

	* c-common.c (match_case_to_enum_1, match_case_to_enum): New.
	(c_do_switch_warnings): New.
	* c-common.h (c_do_switch_warnings): Declare.
	* c-typeck.c (c_finish_case): Call it.
	* stmt.c (all_cases_count, BITARRAY_TEST, BITARRAY_SET,
	mark_seen_cases, check_for_full_enumeration_handling): Remove.
	(expand_end_case_type): Don't do warn_switch handling.
	* expr.h, tree.h: Remove dead decls.

	* c-simplify.c (gimplify_switch_stmt): Force switch body non-null.

2003-10-30  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (thread_jumps): Allow SWITCH_EXPR.
	(thread_edge): Handle it.  Tidy surrounding code.

2003-10-30  Richard Henderson  <rth@redhat.com>

	* domwalk.c (walk_dominator_tree): Pass any final is_ctrl_stmt
	down the recursive walk.

2003-10-30  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (thread_across_edge): Renamed from
	thread_through_successor.  Revamp to thread the destination of an edge
	rather than the successors of a block.
	(dom_opt_finalize_block): Corresponding changes.  Do not bother calling
	thread_across_edge unless we are at a leaf in the dominator tree.

	* tree-cfg.c (thread_jumps): Now returns a bool.  Move some tests into
	tree_forwarder_block_p.  Improve comments.
	(cleanup_control_flow): Now returns a bool indicating if anything was
	changed.
	(thread_unconditional_jumps): Kill.
	(cleanup_tree_cfg): Repeat cascading cleanups until nothing changes.
	(tree_forwarder_block_p): Check forwardable bit in the block's
	annotation to avoid useless work.  Mark blocks as not forwardable as
	appropriate.  Verify destination is not the exit block here.  Do not
	consider successors of the entry block as forwarders.  Ignore empty
	statements when walking through the block's statements.  Verify target
	block is not the start of a case label and that we can safely insert
	a label at the target block.

2003-10-29  Richard Henderson  <rth@redhat.com>

	* c-common.c (c_warn_unused_result): Remove lowered containers.
	* c-semantics.c (genrtl_case_label): Update add_case_node call.
	* c-simplify.c (gimplify_switch_stmt): Build SWITCH_EXPR and
	gimplify it simultaneously with the body.
	* expr.c (expand_expr_1): Handle SWITCH_BODY clear and
	SWITCH_LABELS set.  Update add_case_node calls.
	* gimple-low.c (lower_stmt): Don't do anything for SWITCH_EXPR.
	(lower_switch_expr, lower_case_label_expr): Remove.
	* gimplify.c (gimplify_switch_expr): Zap SWITCH_BODY after
	gimplification.  Force default entry for SWITCH_LABELS.
	(gimplify_case_label_expr): Rename from gimple_add_case_label.
	Assert switch in scope; lower to LABEL_EXPR.
	* stmt.c (pushcase, pushcase_range) Update add_case_node calls.
	(add_case_node): Add dont_expand_label argument.
	(same_case_target_p): Don't search rtl.
	* tree-cfg.c (enum find_location_action): Remove.
	(make_switch_expr_blocks): Remove.
	(make_blocks): Update.
	(make_case_label_edges): Remove.
	(make_edges): Update.
	(find_contained_blocks): Remove lowered containers.
	(make_switch_expr_edges): New.
	(make_ctrl_stmt_edges): Call it.
	(make_cond_expr_edges): Use label_to_block.
	(remove_useless_stmts_and_vars_1): Don't go into SWITCH_BODY.
	(remove_unreachable_block): Remove SWITCH_EXPR special case.
	(cleanup_cond_expr_graph): Tidy.
	(cleanup_switch_expr_graph): Rewrite.
	(disconnect_unreachable_case_labels): Remove.
	(find_taken_edge_cond_expr): Use integer_zerop/integer_nonzerop.
	(find_taken_edge_switch_expr): Rewrite.
	(value_matches_some_label): Remove.
	(find_case_label_for_value): New.
	(is_ctrl_structure): Remove lowered containers.
	(is_ctrl_stmt): Add SWITCH_EXPR.
	(switch_parent): Remove.
	(handle_switch_fallthru): Remove.
	(handle_switch_split): Remove.
	(find_insert_location): Merge into ...
	(bsi_insert_on_edge_immediate): ... here.  Simplify.
	(tree_split_edge): Don't set EDGE_FALLTHRU.
	* tree-eh.c (collect_finally_tree): Remove lowered containers.
	(replace_goto_queue_1, block_may_fallthru_last): Likewise.
	(lower_eh_constructs_1): Likewise.
	(verify_norecord_switch_expr): New.
	(lower_try_finally_switch): Generate lowered switches.
	* tree-inline.c (expand_calls_inline): Don't search null SWITCH_BODY.
	* tree-pretty-print.c (dump_generic_node): Do something sensible
	with lowered switch_expr.
	* tree-ssa-dom.c (record_equivalences_from_incoming_edge): Update
	for lowered switch_expr.
	* tree.def (SWITCH_EXPR): Update docs.
	* tree.h (add_case_node): Update decl.

2003-10-29  Daniel Berlin <dberlin@dberlin.org>

	* tree-ssa-pre.c (n_phi_preds): New variable.
	(generate_vops_as_of_bb): New function
	(generate_expr_as_of_bb): Remove unused first argument. Update all
	callers.
	(subst_phis): Add boundary check for the phi_pred_cache array.
	(same_e_version_phi_result): Once modified, no point in continuing
	the loop.
	(finalize_2): ESSA Minimization can crash if we ended up with new
	BB's

2003-10-29  Richard Henderson  <rth@redhat.com>

	* tree-eh.c (do_return_redirection): Don't move copy to RESULT_DECL
	outside the RETURN_EXPR.  Introduce a new temporary as needed.

2003-10-26  Richard Henderson  <rth@redhat.com>

	* gimplify.c (keep_function_tree_in_gimple_form): Remove.
	(gimplify_function_tree): Return void.  Remove hack for
	language not supporting gimple.
	* tree.h: Update decls.
	* langhooks-def.h (LANG_HOOKS_GIMPLE_BEFORE_INLINING): New.
	* langhooks.h (struct lang_hooks): Add gimple_before_inlining.
	* tree-inline.c (copy_body_r): Check that instead of
	keep_function_tree_in_gimple_form.
	(initialize_inlined_parameters): Likewise.
	(expand_call_inline, expand_calls_inline): Likewise.

	* explow.c (probe_stack_range): Never emit loop notes.
	* expr.c (emit_block_move_via_loop): Likewise.
	* toplev.c (rest_of_compilation): Always synthesize loop notes.

2003-10-26  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (gimple-low.o): Add function.h dependency.
	* gimple-low.c (struct lower_data): New field block.
	(lower_function_body, lower_stmt, lower_bind_expr): Record
	the block at statements.
	* cfglayout.c (insn_locators_initialize): Use new info about
	blocks.
	* expr.c (expand_expr): Record block changes.
	* function.c (blocks_nreverse): Export.
	(uninitialized_vars_warning): Use DECL_RTL_SET_P to test for presence
	of rtl.
	(reset_block_changes, record_block_change, finalize_block_changes,
	check_block_change, free_block_changes): New functions.
	* function.h (struct function): New bitfield dont_emit_block_notes.
	New field ib_boundaries_block.
	(blocks_nreverse, reset_block_changes, record_block_change,
	finalize_block_changes, check_block_change, free_block_changes):
	Declare.
	* sibcall.c (optimize_sibling_and_tail_recursive_call): Don't call
	reorder_blocks when dont_emit_block_notes.
	* stmt.c (expand_start_bindings_and_block, expand_end_bindings):
	Don't emit block notes when dont_emit_block_notes.
	* toplev.c (rest_of_compilation): Don't call reorder_blocks when
	dont_emit_block_notes.
	* tree.c (build1): Initialize TREE_BLOCK field.
	* tree-flow.h (lower_function_body): Declare.
	* tree-optimize.c: Include function.h.
	(optimize_function_tree): Call lower_function_body.
	* tree.h (struct tree_exp): Add block field.
	(TREE_BLOCK): New macro.

2003-10-26  Richard Henderson  <rth@redhat.com>

	* tree.h (tree_dump_index): Add TDI_lower.
	* tree-dump.c (dump_files): Add .lower entry.
	* tree-optimize.c (optimize_function_tree): Move lower_function_body,
	(tree_rest_of_compilation): here.  Tidy .useless dump.

2003-10-25  Jan Hubicka  <jh@suse.cz>

	* c-common.c (c_estimate_num_insns_1): Kill.
	(c_estimate_num_insns): Kill.
	* c-common.h (c_estimate_num_insns): Kill.
	* c-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
	* cp-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
	* objc-lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
	* java/lang.c (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
	(java_estimate_num_insns_1, java_estimate_num_insns): Kill.
	* cgraphunit (cgraph_analyze_function): Use estimate_num_insns.
	* tree-eh.c (decide_copy_try_finally): Likewise.
	* tree-inline.c (limits_allow_inilining, optimize_inline_calls): Likewise.
	(estimate_num_insns_1, estimate_num_insns): New functions.
	* langhooks-def.h (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS): Kill.
	* langhooks.h (estimate_num_inssn): Kill.
	* tree-inline.h (estimate_num_insns): Declare.

2003-10-25  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* gimple-low.c: New.
	* Makefile.in (gimple-low.o): Add.
	* domwalk.c (walk_dominator_tree): Consider COND_EXPR a control
	structure.
	* tree-cfg.c (make_cond_expr_blocks, linearize_control_structures,
	linearize_cond_expr): Removed.
	(thread_jumps, tree_forwarder_block_p): New.
	(merge_tree_blocks): Unused now.
	(phi_alternatives_equal): Modified for use in jump threading.
	(enum find_location_action): Remove EDGE_INSERT_LOCATION_NEW_ELSE.
	(make_blocks): Don't call make_cond_expr_blocks.
	(set_parent_stmt): Ensure we don't set COND_EXPR as a parent
	statement.
	(find_contained_blocks): Remove COND_EXPR alternative.
	(make_cond_expr_edges): Handle lowered gotos.
	(cleanup_tree_cfg): Don't call linearize_control_structures,
	call thread_jumps and verify_flow_info and rerun cleanup_control_flow.
	(remove_unreachable_block): Remove handling of structured COND_EXPRs.
	(remove_bb): Fix warning for removed goto exprs.
	(cleanup_control_flow, cleanup_cond_expr_graph,
	cleanup_switch_expr_graph, find_taken_edge_cond_expr,
	bsi_insert_before, find_insert_location, bsi_insert_on_edge_immediate):
	Handle lowered COND_EXPRs.
	(is_ctrl_structure): Remove COND_EXPR.
	(is_ctrl_stmt): Add COND_EXPR.
	(tree_verify_flow_info): Check validity of COND_EXPRs.
	(thread_edge): Moved from tree-ssa-dom.c.
	* tree-flow.h (cleanup_cond_expr_graph, cleanup_switch_expr_graph):
	Declaration changed.
	(thread_edge, lower_function_body): Declare.
	* tree-optimize.c (optimize_function_tree): Call lower_function_body.
	* tree-pretty-print.c (dump_generic_node): Dump lowered cond_exprs in
	full.
	* tree-ssa-copyprop.c (fixup_var_scope): Handle non-SSA_NAMEs.
	* tree-ssa-dce.c (stmt_useful_p, process_worklist): Cleaned up when
	COND_EXPRs are lowered.
	* tree-ssa-dom.c (thread_edge): Moved to tree-cfg.c.
	(tree_ssa_dominator_optimize_1): Dumps and setting of vars_to_rename
	moved from thread_edge.
	(optimize_stmt): Pass block iterator to cleanup_cond_expr_graph and
	cleanup_switch_expr_graph.
	* tree-ssa.c (insert_copy_on_edge): Fixup scope for emitted variables.

	* dominance.c (BB_NODE): Use VARRAY_GENERIC_PTR_NOGC.
	(calculate_dominance_info): Use VARRAY_GENERIC_PTR_NOGC_INIT.
	* varray.c (element): Add GENERIC_PTR_NOGC entry.
	* varray.h (enum varray_data_enum): Add VARRAY_DATA_GENERIC_NOGC.
	(union varray_data_tag): Add generic_nogc.
	(VARRAY_GENERIC_PTR_NOGC_INIT,  VARRAY_GENERIC_PTR_NOGC,
	VARRAY_PUSH_GENERIC_PTR_NOGC, VARRAY_TOP_GENERIC_PTR_NOGC): New.

2003-10-25  Jan Hubicka  <jh@suse.cz>

	* cppcharset.c (one_utf8_to_utf32): Initialize 's' to silence warning.

2003-10-25  Jan Hubicka  <jh@suse.cz>

	* fold-const.c (nondestructive_fold_binary_to_constant): Realize that
	(plus (address) (const_int)) is a constant.

2003-10-25  Jan Hubicka  <jh@suse.cz>

	* opts.c (decode_options): Uncomment unit-at-a-time setting
	* params.def: Syncrhonize with manline.
	* tree-inline.c (initialize_inlined_parameters):  Set variable as
	gimplified.

2003-10-24  Steven Bosscher  <steven@gcc.gnu.org>

	* gimplify.c (create_artificial_label): New function.
	(build_and_jump): Use it.
	* c-simplify.c (c_gimplify_stmt): Likewise.
	(gimplify_condition): Likewise.
	* tree-cfg.c (factor_computed_gotos, tree_block_forwards_to,
	handle_switch_fallthru, handle_switch_split): Likewise.
	* tree-ssa-dom.c (thread_edge): Likewise.
	* tree-ssa-pre.c (split_critical_edges): Likewise.
	* tree-tailcall.c (eliminate_tail_call): Likewise.
	* tree-eh.c (frob_into_branch_around,
	honor_protect_cleanup_actions, lower_try_finally_nofallthru,
	lower_try_finally_onedest, lower_try_finally_copy,
	lower_try_finally_switch, lower_catch, lower_eh_filter,
	lower_cleanup): Likewise.
	(make_label): Remove.
	* tree-simple.h (create_artificial_label): Add prototype.
	* tree-inline.c (expand_call_inline): Make return label for
	inlined function artificial.

2003-10-23  Jeff Law  <law@redhat.com>

	* timevar.def (TV_TREE_SSA_THREAD_JUMPS): New timevar.
	* tree-dump.c (dump_files): Add dump file for jump threading.
	* tree.h (TDI_thread_jumps): New enum member.
	* tree-cfg.c (tree_block_forwards_to): No longer static.
	* tree-flow.h (tree_block_forwards_to): Prototype.
	(tree_ssa_dominator_thread_jumps): Likewise.
	* tree-optimize.c (optimize_function_tree): Call jump threader.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize_1): New function.
	Common code for redundancy elimination and jump threading on
	the dominator tree.  Slightly different callback initialization
	for redundancy elimination and jump threading.  Initialize
	block forwardable attribute.
	(tree_ssa_dominator_optimize): Call tree_ssa_dominator_optimize_1.
	(tree_ssa_dominator_thread_jumps): New function.
	(thread_edge): Mark results of PHI nodes as needing rewriting if
	we have threaded through a block with PHI nodes.
	(thread_through_successor): If thread_through_phis is nonzero,
	then allow jump threading through blocks with PHI nodes.  If the
	target block is a forwarder block, then forward the jump.
	(thread_jumps_walk_stmts): Statement walker for dominator thread
	jumping.

	* tree-ssa-dom.c (record_equivalence_from_incoming_edge): Fix
	comment typo.

2003-10-23  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_*): Return gimplify_status.
	(gimple_add_tmp_var): Set seen_in_bind_expr.
	(gimplify_bind_expr): Likewise.  Kill if 0 code.
	(gimplify_return_expr): Cope with error marks.
	(gimple_push_cleanup): Do nothing if errors seen.
	(gimplify_expr): Cope with error marks.  Use gimplify_status to
	decide when to exit the main loop.  Zap statements with errors.
	(gimplify_body): Return void.
	(keep_function_tree_in_gimple_form): Don't exit on errors.
	(gimplify_function_tree): Return bool.  Don't exit on errors.
	* langhooks.c (lhd_gimplify_expr): Return GS_UNHANDLED.
	* langhooks.h (struct lang_hooks): Update docs for gimplify_expr.
	* tree-optimize.c (optimize_function_tree): Don't exit on errors.
	Move delete_tree_cfg call outside optimization clause.
	(tree_rest_of_compilation): Don't exit on errors.
	* tree-simple.h (enum gimplify_status): New.
	(gimplify_expr, gimplify_stmt, gimplify_body): Update.
	* tree-ssa.c (rewrite_out_of_ssa): Move delete_tree_cfg call to
	optimize_function_tree.
	* tree.h (struct tree_decl): Add seen_in_bind_expr.
	(gimplify_function_tree): Update.
	* c-common.c (c_add_case_label): Unify three error exit paths.
	Create a normal label, not a case label to suppress unreachable
	code warning.
	* c-simplify.c (c_build_bind_expr): Don't create an empty bind
	body.  Pass entire bind_expr to gimplify_stmt.
	(gimplify_block): Don't abort on mismatches if errors seen.
	(gimplify_expr_stmt): Cope with error marks.
	(gimplify_decl_stmt): Likewise.
	(c_gimplify_expr): Return gimplify_status.

2003-10-22  Daniel Berlin  <dberlin@dberlin.org>

	* tree-pretty-print.c (dump_generic_node): Kill off ELEFT_NODE.
	Print out status of new EUSE_LVAL flag.

	* tree-ssa-pre.c: #include alloc-pool.h
	(append_eref_to_block): Inline.
	(names_match_p): Ditto.
	(pre_expression): Take sbitmap of variables to rename so we can
	mark our new variable if necessary.
	(insert_occ_in_preorder): Completely redo to be an O(n log n)
	algorithm worst case, instead O(n^2) all the time.
	(build_dfn_array): New function.
	(eref_compare): Ditto.
	(preorder_count): Remove no-longer used variable.
	(pre_stats): Add new stats about memory use.
	(struct expr_info): add loadpre_cand member.
	(euse_node_pool): New alloc-pool
	(eref_node_pool): Ditto
	(create_expr_ref): Use them.
	(expr_phi_insertion): Insert on PHI's of VUSES for loadpre cands.
	Not all expressions have uses (left occurrences don't).
	(load_modified_real_occ_real_occ): Return false, not abort.
	(process_delayed_rename): Remove useless fibheap, do proper LVAL
	handling.
	(insert_euse_in_preorder_dt_order_1): No more ELEFT_NODE's.
	(finalize_1): Ditto.
	(set_save): Ditto.
	(really_available_def): New function.
	(finalize_2): Use really_available_def, not EUSE_SAVE, during EPHI
	minimization.
	(names_match_p): Handle INDIRECT_REF properly.
	(call_modifies_slot): Removed.
	(add_call_to_ei): Removed.
	(process_left_occs_and_kills): Fix.
	(pre_expression): Zero out counts.
	(collect_expressions): Split out from tree_perform_ssapre. Do this
	in domtree order.
	(tree_perform_ssapre): Create and free alloc-pools.
	Rename new variables that need to be renamed.

	* tree.c (tree_size): Remove ELEFT_NODE.
	(tree_node_size): Ditto.
	(is_essa_node): Ditto.

	* tree.def (ELEFT_NODE): Gone.

	* tree.h (EREF_NODE_CHECK): No more ELEFT_NODE.
	(struct tree_eref_common): Add ID flag.
	(struct tree_euse_node): Add lval flag.
	(EREF_ID): New macro.
	(EUSE_LVAL): New macro.

2003-10-22  Daniel Berlin  <dberlin@dberlin.org>

	* tree-flow-inline.h (add_dom_child): XMALLOC, not GGC_ALLOC,
	the bitmap.
	(clear_dom_children): XFREE the bitmap.

2003-10-22  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.c (new_tree_live_info, (delete_tree_live_info,
	live_worklist, set_if_valid, add_livein_if_notdef,
	calculate_live_on_entry, calculate_live_on_exit,
	add_conflicts_if_valid, dump_live_info): Use bitmap instead of sbitmap.
	(build_tree_conflict_graph): Use bitmap, Change mechanism for
	adding conflicts between live-on-entry partitions.
	* tree-ssa-live.h (struct tree_live_info_d): Switch to bitmaps.
	(partition_is_global, live_entry_blocks, live_on_exit,
	live_merge_and_clear, make_live_on_entry): Switch to bitmaps.
	* tree-ssa.c (struct _elim_graph): Remove bitmaps, use varrays.
	(new_elim_graph, clear_elim_graph, delete_elim_graph): Switch from
	old bitmap implementation.
	(elim_graph_size): New. Number of elements in elimination graph.
	(elim_graph_add_node): New. Add an element to the elim-graph.
	(elim_graph_add_edge): New. Add an edge to the elim-graph.
	(elim_graph_remove_succ_edge): New. Remove an edge for which a node
	has a successor.
	(FOR_EACH_ELIM_GRAPH_SUCC): Find all successor nodes.
	(FOR_EACH_ELIM_GRAPH_PRED): Find all predeccesor nodes.
	(eliminate_name, eliminate_build, elim_forward,
	elim_unvisited_predecessor, elim_backward, elim_create, eliminate_phi):
	Use new elim-graph routines.
	(rewrite_out_of_ssa): Enable single-definition compaction when not
	combining temporaries.

2003-10-21  Richard Henderson  <rth@redhat.com>

	* gimplify.c: Sort functions into use order, and all gimplification
	functions to the end.

2003-10-22  Jeff Law  <law@redhat.com>

	* tree-cfg.c (thread_unconditional_jumps): New function.
	(tree_block_forwards_to): Likewise.
	(cleanup_tree_cfg): Call thread_unconditional_jumps.
	* tree-flow.h (bb_ann_t): Add forwardable status bit.

	* tree-dump.c (dump_files): Add entry for TDI_none.
	(dump_begin): Do nothing for TDI_none.
	(dump_enable_all, dump_switch_p): Start our scan at TDI_none + 1.
	* tree.h (tree_dump_index): Add.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize): If we have altered the
	CFG and we have variables to [re]rename, go ahead and rename them before
	starting the next iteration of the dominator optimizer.

2003-10-21  Jason Merrill  <jason@redhat.com>

	* gimplify.c (gimplify_modify_expr): Require a regvar on either
	the lhs or rhs if we're dealing with a renameable type.
	(canonicalize_component_ref): New fn.
	(gimplify_compound_lval): Use it.
	(gimplify_conversion): Use it.
	(gimplify_expr): Lose redundant STRIP_MAIN_TYPE_NOPS.
	Discard conversions in void context.

2003-10-21  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (pre_expression): Free and allocate the
	ephi_pindex_htab and phi_pred_cache in this function only.
	(phi_pred_cache): New array to store cached phi preds, to avoid
	recomputation and unnecessary copying.
	(subst_phis): Use it.
	(added_phis): array of added phis that is marked for GC.

	* Makefile.in: Add tree-ssa-pre.c to the gtype files, and
	gt-tree-ssa-pre.h to the list of generated files.

2003-10-21  Jason Merrill  <jason@redhat.com>

	PR optimization/12661
	* tree-dfa.c (get_expr_operands): Handle TRUTH_NOT_EXPR.
	* tree-simple.c (is_gimple_rhs): Allow TRUTH_NOT_EXPR.
	* gimplify.c (gimplify_expr) <TRUTH_NOT_EXPR>: Don't rewrite to an
	EQ_EXPR.

2003-10-21  Jan Hubicka  <jh@suse.cz>

	* haifa-sched.c (choose_ready): Initialize index.
	* tree-tailcall.c (bb_optimize_tail_calls): Initialize has_return.
	* f/lex.c (ffelex_cfelex_): Initialize d.

2003-10-20  Diego Novillo  <dnovillo@redhat.com>

	Fix PR optimization/12688
	* tree-dfa.c (get_stmt_operands): Don't return early when dealing
	with an empty statement.
	* tree-ssa-ccp.c (set_rhs): If the expression has no side effects,
	replace the statement with an empty statement.

2003-10-20  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-dce.c (processed): Change to an sbitmap.
	(mark_necessary): Test bits in 'processed'.
	(tree_ssa_dce): Initialize/free processed as an sbitmap.

2003-10-20  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (bsi_prev): Also copy the context from the previous
	iterator.

2003-10-18  Richard Henderson  <rth@redhat.com>

	* builtins.c (simplify_builtin): Handle BUILT_IN_CONSTANT_P.

2003-10-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-tailcall.c: New.
	* Makefile.in (tree-tailcall.o): Add.
	* function.c (assign_parms): Setting of current_function_stdarg
	moved ...
	(allocate_struct_function): ... here.
	* tree-dump.c (dump_files): Add .tail dump.
	* tree-flow.h (tree_optimize_tail_calls): Declare.
	* tree-optimize.c (optimize_function_tree): Call
	tree_optimize_tail_calls.
	* tree.h (enum tree_dump_index): Add TDI_tail.

2003-10-18  Jan Hubicka  <jh@suse.cz>

	* tree-ssa-copyprop.c (move_var_to_scope):  Do not clear abstract
	origin for static variables.

2003-10-18  Jan Hubicka  <jh@suse.cz>

	* integrate.c (copy_decl_for_inlinig): Fix copying of copies.

2003-10-18  Jan Hubicka  <jh@suse.cz>

	* cgraphunit.c (cgraph_analyze_function):  Fix call of estimate_num_insns.

2003-10-17  Kazu Hirata  <kazu@cs.umass.edu>

	* ChangeLog.tree-ssa: Fix typos.
	* tree-alias-common.c: Fix comment typos.
	* tree-cfg.c: Likewise.
	* tree-dfa.c: Likewise.
	* tree-eh.c: Likewise.
	* tree-flow.h: Likewise.
	* tree-iterator.h: Likewise.
	* tree-mudflap.c: Likewise.
	* tree-ssa-ccp.c: Likewise.
	* tree-ssa-dce.c: Likewise.
	* tree-ssa-dom.c: Likewise.
	* tree-ssa-live.c: Likewise.
	* tree-ssa-live.h: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-ssa.c: Likewise.

2003-10-17  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-dce.c (processed): New Global vector.
	(mark_necessary): Check if SSA_NAME has already been processed first.
	(find_useful_stmts, process_worklist): Change call to mark_necessary().
	(tree_ssa_dce): Initialize and free processed vector.
	* tree-cfg.c (handle_switch_fallthru): A new basic block can result
	from splitting edges of nested switch stmts.
	(handle_switch_split): If a new block is created, restart the loop for
	inserting GOTO's to handle the new block.

2003-10-17  Jan Hubicka  <jh@suse.cz>

	* tree-cfg.c (remove_useless_stmts_and_vars_bind): Fix handling of
	static variables.

2003-10-16  Richard Henderson  <rth@redhat.com>

	* common.opt (fdisable-gimple): Remove.
	* flags.h (flag_disable_gimple): Remove.
	* toplev.c (flag_disable_gimple): Remove.
	(process_options): Don't check it.
	(lang_independent_options): Don't set it.
	* opts.c (common_handle_option): Likewise.
	* gimplify.c (keep_function_tree_in_gimple_form): Don't check it.
	* c-semantics.c (expand_stmt_toplev): Likewise.
	* tree-optimize.c (tree_rest_of_compilation): Likewise.
	* doc/invoke.texi: Don't document it.

2003-10-16  Roger Sayle  <roger@eyesopen.com>

	* fold-const.c: Merge from mainline.
	* tree.c (associate_tree_code, commutative_tree_code): Use a
	switch statement instead of a sequence of comparisons.

2003-10-16  Richard Henderson  <rth@redhat.com>

	* gimplify.c (maybe_protect_cleanup): Remove.
	* tree-simple.h (maybe_protect_cleanup): Remove.
	* c-simplify.c (gimplify_cleanup): Don't call it.

2003-10-16  Jeff Law  <law@redhat.com>

	* tree-cfg.c (found_computed_goto): New global for computed goto
	factoring/unfactoring.
	(factored_computed_goto_label, factored_computed_goto): Likewise.
	(factor_computed_gotos): New function.
	(build_tree_cfg): Use it.
	(make_blocks): Record whether or not we find a computed goto.
	(remove_useless_stmts_and_vars): Un-factor computed gotos.
	(remove_useless_stmts_and_vars): Reset factored_computed_goto_label
	and factored_computed_goto.

	* tree-ssa-dom.c (get_value_for, set_value_for): Move to the start
	of the file.  Delete pointless sanity checking.

	* tree-ssa.c (currdefs): Now a varray instead of a hash table.
	(get_value_for, set_value_for): Corresponding changes.  Move to
	the start of the file and delete pointless sanity checking.
	(rewrite_into_ssa, dump_tree_ssa_stats): Corresponding changes.
	(var_value_hash, var_value_eq): Kill.

	* tree-ssa.c (rewrite_add_phi_arguments): Once we encounter a
	rewritten PHI break the inner loop.

	* tree-ssa.c (insert_phi_nodes_for): Use EXECUTE_IF_AND_COMPL_IN_BITMAP.

	* tree-dfa.c (create_phi_node):  Clear PHI_REWRITTEN on all new PHIs
	(remove_all_phi_nodes_for): Set PHI_REWRITTEN on any PHIs which are
	not removed.
	* tree-ssa.c (rewrite_add_phi_arguments): Check the PHI node itself
	to see if it has already been rewritten.
	* tree.h (PHI_REWRITTEN): New accessor macro.
	(struct phi_node): New field rewritten.

	* tree-flow.h (struct bb_ann_d): New field num_preds.
	* tree-dfa.c (create_phi_node): Get the number of predecessors from
	the block's annotation.
	* tree-ssa.c (rewrite_into_ssa): Compute number of preds for each
	block and store it into the block's annotation.
	(insert_phi_nodes_for): Get the number of preds for each block
	from the block's annotation.

	* tree-ssa.c: Remove parallel lifetime analysis code from April 2003.
	(def_blocks_d): Remove PHI_INSERTION_POINTS field.
	(compute_global_livein): Accept livein/def bitmaps to use for
	life analyis rather than a varray of variables.  Callers updated.
	Rewritten to compute life information for one variable at a
	time instead of several variables at once.
	(insert_phis_for_deferred_variables): Remove.
	(insert_phi_nodes_for): Lose varray argument.  Callers updated.
	No longer mess with deferring PHI insertions for variables.
	(insert_phi_nodes): No longer need to deal with deferred variables.
	Kill everything related to them.

2003-10-15  Jeff Law  <law@redhat.com>

	* domwalk.c, domwalk.h: New files.
	* Makefile.in (OBJS-common): Add domwalk.c.
	(tree-ssa-dom.o): Add dependency on $(BASIC_BLOCK_H) and domwalk.h.
	(tree-ssa.o): Add dependency on domwalk.h.
	(domwalk.o): Add dependencies.
	* tree-ssa-dom.c: Include domwalk.h.
	(cfg_altered, vars_to_rename): Now globals.
	(dom_walk_block_data): New structure for block data used by dominator
	walker.
	(optimize_block, record_equivalences_from_block_entry): Kill.
	(optimize_stmt): Lose "cfg_altered" argument.  Update callers.
	Initialize may_have_exposed_new_symbols.
	(get_value_for, set_value_for): Lose "table" argument.  Update
	callers.  Use const_and_copies table directly.
	(lookup_avail_expr): Lose "const_and_copies" argument.  Callers
	updated.
	(get_eq_expr_value): Similarly.  Also accept a pointer to the
	vrp_variables. Callers updated.
	(update_rhs_and_lookup_avail_expr): Similarly.
	(record_cond_is_true, record_cond_is_false): Similarly.
	(simplify_rhs_and_lookup_avail_expr): Similarly.
	(simplify_cond_and_lookup_avail_expr): Similarly.
	(record_equivalences_from_phis): Similarly.
	(record_equivalences_from_incoming_edge): Similarly.  Also accept
	a pointer to the block const_and_copies table and vrp_variables.
	Callers updated.
	(eliminate_redundant_computations): Similarly
	(record_equivalences_from_stmt, thread_through_successor): Similarly.
	(dom_opt_initialize_block): New function.  Perform block local
	initialization for the dominator optimizer.
	(dom_opt_finalize_block): Renamed from finalize_block.  Get
	block local varrays from walk_data.  Pop entry off block local
	data stack when complete.
	(dom_opt_walk_stmts): New function.
	(cprop_into_phis): Get block local varrays from walk_data.
	(record_range): Get vrp varray by reference than by value.
	(tree_ssa_dominator_optimize): Store incoming "vars" variable into
	global "vars_to_rename".  Initialize walk_data.  Use
	walk_dominator_tree.
	(cprop_into_stmt): Initialize may_have_exposed_new_symbols.
	* tree-ssa.c: Include domwalk.h
	(rewrite_finalize_block, rewrite_initialize_block): New functions
	extracted from rewrite_block.
	(rewrite_walk_stmts, rewrite_add_phi_arguments): Similarly.
	(rewrite_block): Kill.
	(rewrite_into_ssa): Initialize walk_data.  Use walk_dominator_tree.

2003-10-14  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_expr): Return bool.  Bail gracefully if
	fb_mayfail is set.
	(gimplify_asm_expr): Take pointer-to-expr.  Allow gimplify_expr
	to fail for lvalues, and issue appropriate error messages.  Zap
	the entire asm statement on failure.
	* tree-simple.h (enum fallback_t): Add fb_mayfail.

2003-10-14  Richard Henderson  <rth@redhat.com>

	* c-tree.h (C_LANG_TREE_NODE_CHAIN_NEXT): New.
	(union lang_tree_node): Use it for chain_next annotation.

2003-10-14  Richard Henderson  <rth@redhat.com>

	* c-common.c: Include tree-iterator.h.
	(c_expand_expr): Kill warn_unused_result checks.
	(c_warn_unused_result): New.
	* c-common.h (STMT_EXPR_WARN_UNUSED_RESULT): Remove.
	(c_warn_unused_result): Declare.
	* c-decl.c (finish_function): Always gimplify.  Call
	c_warn_unused_result.
	* calls.c (expand_call): Kill warn_unused_result checks.
	* Makefile.in (c-common.o): Update.

2003-10-15  Steven Bosscher  <steven@gcc.gnu.org>

	* cfghooks.c (dump_bb): Take extra `int indent' argument.
	* cfg.c (dump_bb): Take extra argument to match cfg hook.
	Write out all information about bb that is shared between the tree
	and rtl representations.
	* basic-block.c (dump_bb): Adjust prototype.
	* cfgrtl.c (rtl_dump_bb): Update prototype to match cfg hook.
	Use indent.
	* flow.c (verify_wide_reg, verify_local_live_at_start):
	Fixup dump_bb calls.
	* tree-cfg.c (dump_tree_bb): Rename to tree_dump_bb.  Remove unused
	 `prefix' argument.  Put in tree_cfg_hooks as cfg hook for dump_bb.
	(remove_bb, debug_tree_bb, dump_tree_cfg): Call dump_bb.
	* tree-ssa (dump_tree_ssa): Likewise.
	* tree-flow.h (dump_tree_bb): Replace with new tree_dump_bb
	prototype.
	* tree-pretty-print (dump_block_info): Match case of BLOCK, SUCC,
	PRED with dump_bb.

2003-10-14  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c (throwaway_global): Delete.
	(andersen_same_ponts_to_set): We handle all globals individually
	now.
	* tree-alias-common.c:  Remove doxygen markers.
	(get_alias_var_decl): Always create an alias var for globals now.
	Assign the global alias vars to GLOBAL_VAR, too.
	(intra_function_call): Fix logic, do a bit of pre-filtering to
	avoid useless global aliasing.
	(get_values_from_constructor): It's the same for field based and
	not field based.
	(create_alias_vars): Remove special global var handling.
	(same_points_to_set): Ditto.
	(ptr_may_alias_var): Ditto.

2003-10-14  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (cprop_into_phis): Avoid doing useless work if the
	edge we care about is abnormal.
	* tree-ssa-copyprop (cprop_phi): Avoid doing useless work if the
	destination of the PHI node occurs in an abnormal PHI.

	* tree-ssa-dom.c (record_equivalences_from_stmt): Renamed from
	record_equivalances.  Caller updated.
	(record_equivalences_from_phis): New function extracted from
	optimize_block.
	(record_equivalences_from_incoming_edge): Likewise.
	(record_equivalances_from_block_entry): Likewise.
	(cprop_into_phis): Likewise.
	(optimize_stmt): Lots of code moved into new functions.  Call
	record_equivlances_from_block_entry.

	* tree-ssa-dom.c (optimize_block): Simplify interface slightly.
	Use finalize_block.  Extract edge_flags from our block's
	incoming edge as necessary.  Simplify recursive call.
	(thread_through_successor): Extracted from optimize_block.
	(finalize_block): Similarly.

	* tree-ssa-dom.c (eliminate_redundant_computations): New function
	extracted from optimize_stmt.
	(record_equivalences): Similarly.
	(optimize_stmt): Use eliminate_redundant_computations and
	record_equivalences.  If fold_stmt changes stmt, then make sure
	to get a new annotation as well.

	* tree-cfg.c (cleanup_control_flow): Pass last statement down to
	cleanup_cond_expr_graph and cleanup_switch_expr_graph.
	(cleanup_cond_expr_graph): Accept statement from caller and
	use it.  Return nonzero if the predicate was constant.  No longer
	static.
	(cleanup_switch_expr_graph): Similarly.
	(disconnect_unreachable_case_labels): Similarly, except that it
	is still static.
	* tree-flow.h (cleanup_cond_expr_graph): Prototype.
	(cleanup_switch_expr_graph): Similarly.
	* tree-ssa-dom.c (optimize_stmt): Also optimize the condition
	in a SWITCH_EXPR.  Use COND_EXPR_COND and SWITCH_COND to get
	conditions instead of relying upon known operand positions.
	Use cleanup_cond_expr_graph and cleanup_switch_expr_graph rather
	than open coding equivalents.
	(lookup_avail_expr): Handle SWITCH_EXPRs.  Use COND_EXPR_COND and
	SWITCH_COND to get conditions instead of relying upon known
	operand positions.
	(avail_expr_hash, avail_expr_eq): Similarly.

2003-10-14  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_body): Save and restore input_location;
	initialize input_location to DECL_SOURCE_LOCATION.
	(gimplify_expr): Always save and restore input_location.

2003-10-14  Richard Henderson  <rth@redhat.com>

	* expr.c (expand_expr): Break out EXPR_LOCUS code from ...
	(expand_expr_1): ... here, renamed from expand_expr.

2003-10-13  Richard Henderson  <rth@redhat.com>

	* c-simplify.c (c_gimplify_stmt): Upreate on location_t and not
	fine and line individually.
	(gimplify_c_loop, gimplify_switch_stmt): Likewise.
	* gimplify.c (wfl_locus): Merge wfl_filename+wfl_lineno.
	(annotate_all_with_locus_1): Rename from annotate_stmt_with_file_line.
	(annotate_all_with_locus): Replace annotate_all_with_file_line;
	update all callers.
	* tree-simple.h: Update.
	* tree.c, tree.h (annotate_with_locus): New.

2003-10-13  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-flow-inline.h (def_ops): Take a stmt_ann_t as argument
	instead of a tree.
	(use_ops): Likewise.
	(vdef_ops): Likewise.
	(vuse_ops): Likewise.
	* tree-flow.h: Update prototypes.
	* tree-cfg.c (remove_stmt): Load the statement annotation.
	Adjust *_ops calls.
	* tree-dfa.c (compute_immediate_uses_for_stmt,
	mark_new_vars_to_rename): Likewise.
	* tree-pretty-print.c (dump_vops): Likewise.
	* tree-ssa-ccp.c (tree_ssa_ccp): Likewise.  Also remove now
	superfluous stmt_ann() calls.
	(visit_stmt, cpp_fold, add_var_to_ssa_edges_worklist,
	initialize, replace_uses_in, likely_value): Likewise.
	* tree-ssa-copyprop.c (copyprop_stmt): Likewise.
	* tree-ssa-dce.c (stmt_useful_p, process_worklist): Likewise.
	* tree-ssa-dom.c (cprop_into_stmt, optimize_stmt,
	avail_expr_hash, avail_expr_eq):
	Likewise.
	* tree-ssa-live.c (create_ssa_var_map, calculate_live_on_entry,
	build_tree_conflict_graph): Likewise.
	* tree-ssa-pre.c (maybe_find_rhs_use_for_var,
	expr_phi_insertion, same_e_version_real_occ_real_occ,
	generate_expr_as_of_bb, bool load_modified_real_occ_real_occ,
	bool same_e_version_phi_result, get_default_def,reaching_def,
	tree_perform_ssapre): Likewise.
	* tree-ssa.c (mark_def_sites, rewrite_out_of_ssa, rewrite_stmt):
	Likewise.

2003-10-12  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_array_ref_to_plus): Be prepared for
	null TYPE_DOMAIN or TYPE_MIN_VALUE for the array.
	* tree-ssa-ccp.c (fold_indirect_refs_r): Likewise.

2003-10-12  Richard Henderson  <rth@redhat.com>

	* tree.h (struct tree_common): Rename unused_1 to invariant_flag.
	(TREE_INVARIANT): New.
	* builtins.c (build_string_literal): Set TREE_INVARIANT.
	* c-common.c (fix_string_type): Likewise.
	* c-typeck.c (build_external_ref): Likewise.
	(build_c_cast, pop_init_level): Likewise.
	* fold-const.c (fold_convert, fold): Likewise.
	* tree.c (make_node, build_constructor): Likewise.
	(build, build1): Likewise.
	(staticp): Pass unknown component references to the language.
	(save_expr): Check TREE_INVARIANT instead of TREE_CONSTANT.
	(skip_simple_arithmetic): Likewise.
	(stabilize_reference_1): Likewise.
	* print-tree.c (print_node): Print TREE_INVARIANT.

	* c-common.c (pointer_int_sum): Rely on build to set TREE_CONSTANT.
	(finish_label_address_expr): Likewise.
	* c-typeck.c (default_function_array_conversion): Likewise.
	(parser_build_binary_op, pointer_diff): Likewise.
	(build_unary_op, build_binary_op): Likewise.
	* fold-const.c (non_lvalue): Likewise.

	* tree-pretty-print.c (dump_generic_node): Handle VIEW_CONVERT_EXPR.

2003-10-12  Richard Henderson  <rth@redhat.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_array_ref_to_plus): Subtract the array
	domain minimum index.
	(gimplify_addr_expr): Expand ARRAY_REFs.  Cope with Fortran
	missing cast wierdnesses.
	* tree-dfa.c (get_expr_operands): Handle (&v + c); abort on
	other address invariants that should have been folded.
	(vdefs_disappeared_p): New.
	(mark_new_vars_to_rename): Use it.  Move from ...
	* tree-ssa-dom.c: ... here.
	* tree-flow-inline.h (is_unchanging_value): Remove; use
	is_gimple_min_invariant everywhere instead.
	(phi_ssa_name_p): New.
	* tree-must-alias.c (find_addressable_vars): Process PHIs.
	* tree-simple.c (is_gimple_min_invariant): Rename from
	is_gimple_const; allow non-static variable addresses; update callers.
	(is_gimple_val): Remove ADDR_EXPR checks.
	* tree-simple.h: Update.
	* tree-ssa-ccp.c (replace_uses_in): Add replaced_address argument.
	(substitute_and_fold): Use that to mark_new_vars_to_rename.
	(fold_indirect_refs_r): New.
	(fold_stmt): Use it.
	* tree-ssa-copyprop.c (copyprop_stmt): Call fold_stmt.
	* tree-ssa-dce.c (NECESSARY): Use asm_written_flag.
	(mark_necessary): Reject DECLs.
	* tree-ssa-live.c (register_ssa_partition): Use phi_ssa_name_p.
	* tree-ssa-pre.c (generate_expr_as_of_bb): Call fold_stmt if we
	replaced with constants.
	* tree-ssa.c (insert_copy_on_edge): Unwrap ADDR_EXPRs to set_is_used.
	(eliminate_build, coalesce_abnormal_edges, coalesce_vars): Use
	phi_ssa_name_p.

2003-10-09  Frank Ch. Eigler  <fche@redhat.com>

	java/12211
	* gimplify.c (gimplify_save_expr): Tolerate void-typed saved
	expressions.

2003-10-09  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_call_clobber_ops): If a variable is read-only,
	add a VUSE operand instead of VDEF.

2003-10-08  Jason Merrill  <jason@redhat.com>

	PR optimization/12525
	* tree-dfa.c (note_addressable): New fn, split out from...
	(add_stmt_operands): Here.
	(get_stmt_operands) <ASM_EXPR>: Call it for mem ops.
	* gimplify.c (gimplify_asm_expr): Call parse_input_constraint
	directly.  It's only a mem op if allows_mem is set.

2003-10-08  Diego Novillo  <dnovillo@redhat.com>

	PR/12187
	* tree-dfa.c (add_stmt_operand): Test against current_function_decl
	when checking for global variables.
	(may_access_global_mem_p): Likewise.
	(add_referenced_var): Likewise.
	Consider DECL_NONLOCAL variables call clobbered and used.
	(find_hidden_use_vars): Do not test for DECL_NONLOCAL variables.
	* tree-optimize.c (tree_rest_of_compilation): Test against
	current_function_decl when checking for global variables.
	* tree-ssa-ccp.c (get_default_value): Likewise.
	* tree-ssa-dce.c (need_to_preserve_store): Likewise.

2003-10-07  Jason Merrill  <jason@redhat.com>

	PR optimization/12525
	* gimplify.c (gimplify_asm_expr): If the constraint doesn't allow
	a register, call mark_addressable.  Split an in/out operand that
	does allow a register into separate input and output operands.

2003-10-06  Richard Henderson  <rth@redhat.com>

	* fold-const.c (fold): Fold (T1)((T2)X op Y) into (T1)X op Y,
	for suitable values of T1 & T2.

2003-10-06  Andrew Macleod  <amacleod@redhat.com>

	* tree-dfa.c (compute_immediate_uses): Add optional callback.
	(compute_immediate_uses_for_phi): Remove unused parameter. Add optional
	callback to determine if usage info should be calculated for variable.
	(compute_immediate_uses_for_stmt): Add optional callback to determine
	if usage info should be calculated for variable.
	* tree-flow.h (compute_immediate_uses): Update prototype.
	* tree-ssa-ccp.c (need_imm_uses_for): New. Callback function passed to
	compute_immediate_uses.
	(initialize): Calculate defaults initially, then build reduced
	immediate use information.
	(get_default_value): Non empty stmt's which are not a PHI_NODE or
	a MODIFY_EXPR default to VARYING.

2003-10-06  Andrew Macleod  <amacleod@redhat.com>

	* tree-cfg.c (tree_split_edge): Mark edge as FALLTHRU when splitting.

2003-10-03  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa.c (rewrite_block): Test vars_to_rename instead of
	PHI_ARG_CAPACITY.
	* tree-dfa.c (remove_phi_arg_num): Don't update
	PHI_ARG_CAPACITY.

2003-10-01  Richard Henderson  <rth@redhat.com>

	* c-decl.c (set_decl_nonlocal): New.
	(store_parm_decls): Use it via walk_tree.

2003-10-01  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (cprop_into_stmt): New function extracted from
	optimize_stmt.
	(optimize_stmt): Use cprop_into_stmt.

2003-09-30  Richard Henderson  <rth@redhat.com>

	* function.h (struct function): Add function_end_locus.
	* c-decl.c (finish_function): Set it.
	* tree-optimize.c (tree_rest_of_compilation): Set input_location
	to function_end_locus before expand_function_end.

	* tree-optimize.c (optimize_function_tree): Move calls to
	remove_useless_stmts_and_vars and lower_eh_constructs ...
	(tree_rest_of_compilation): ... here.

	* c-simplify.c (gimplify_expr_stmt): Don't warn for any statement
	with void result type.

2003-09-30  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): Fix thinko
	in test for swapping ranges.

	* tree-ssa-dom.c (record_range): New function.
	(extract_range_from_cond): Likewise.
	(tree_ssa_dominator_optimize): Initialize the vrp_data varray.
	(optimize_block): Initialize the vrp_variables varray.  Wipe
	appropriate entries from the VRP varrays when done processing a block.
	(get_eq_expr_value): Accept new argument "bb".  Call record_range
	appropriately.  Refactor code to avoid useless work.
	(simplify_cond_and_lookup_avail_expr): Use value range records to
	simplify conditions.
	(simplify_rhs_and_lookup_avail_expr): When simplifying ABS_EXPR,
	DIV_EXPR and MOD_EXPR, use simplify_cond_and_lookup_avail_expr
	to determine the range of the given variable.

	* tree-ssa-dom.c (find_equivalent_equality_comparison): Do not
	look through a typecast which narrows a value.

2003-09-30  Paul Brook  <paul@nowt.org>

	* Makefile.in: Add rules for check-gfortran.

2003-09-29  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_cond_expr): Fix both arms dead return value.

2003-09-29  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): New function.
	(find_equivalent_equality_comparison): Likewise.
	(optimize_block): Remove code to build a == c equivalence after
	seeing a == b and b == c.  Remove code to walk backwards
	though typecasts to record equivalences and move relevant parts
	into find_equivalent_equality_comparison.
	(optimize_stmt): Call simplify_cond_and_lookup_avail_expr.

2003-09-28  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_call_expr): Annotate all call_exprs.
	* tree-inline.c (expand_call_inline): Set input_location based
	on EXPR_LOCUS; save and restore input_location around that.
	(walk_tree): Do not set input_location.

2003-09-27  Graham Stott  <graham.stott@btinternet.com>

	* expr.c (expand_expr)[CATCH_EXPR]: Fix bogus return value.

2003-09-26  Andrew MacLeod  <amacloeod@redhat.com>

	* tree-ssa-dom.c (struct var_value_d): Remove.
	(const_and_copies): Change to a varray_type.
	(tree_ssa_dominator_optimize): Initialize const_and_copies as a varray.
	(optimize_block): Simply set the value in const_and_copies.
	(dump_dominator_optimization_stats): No hash stats for const_and_copies.
	(record_cond_is_true, record_cond_is_false,
	simplify_rhs_and_lookup_avail_expr, update_rhs_and_lookup_avail_expr):
	Parameter const_and_copies is now a varray_type.
	(var_value_hash, var_value_eq): Remove.
	(get_value_for, set_value_for): Access varray elements.
	(get_eq_expr_value): Parameter const_and_copies is now a varray_type.

	* tree-cfg.c (handle_switch_split): Update container of previous stmt.

2003-09-25  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (split_critical_edges): New function, temporarily
	disabled until some edge splitting/insertion problems are fixed.
	(opnum_of_ephi): Take an edge argument, constify. Use hash table lookup.
	Update all callers.
	(ephi_pindex_eq): New function.
	(ephi_pindex_hash): New function.
	(ephi_pindex_htab): New variable.
	(add_ephi_pred): Update hash table.
	(expr_phi_insertion): Don't free the bitmap returned by compute_idfs
	anymore.
	(idfs_cache): New variable.
	(compute_idfs): Rewrite to use cache as much as possible, and not
	recompute when we can avoid it.

2003-09-25  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c:  Fixup comment spacing.
	(andersen_op_assign):  Handle >2 operands case.

2003-09-24  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-dfa.c (compute_immediate_uses_for): Split up in two
	separate functions, one for PHIs and one for normal statements.
	(compute_immediate_uses_for_phi): New.
	(compute_immediate_uses_for_stmt): New.

2003-09-25  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_block): When EQ_EXPR_VALUE has the
	form DEST = SRC where both DEST and SRC are SSA_NAMEs also
	record SRC = DEST into the const and copies table.

	* tree-ssa-dom.c (optimize_block): Change tests which checked
	for SSA_VAR_P to only allow SSA_NAMEs.
	(get_value_for, set_value_for): Likewise.
	(lookup_avail_expr, get_eq_expr_value): Likewise.

2003-09-25  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-dce.c (pdom_info, needed_stmts): Remove.
	(NECESSARY): Define.
	(necessary_p): Check bit instead of hash table lookup.
	(clear_necessary): New. Clear necessary bit.
	(mark_necessary): Use bit instead of hash table. No control lookup.
	(mark_tree_necessary): Remove.
	(find_useful_stmts): Clear necessary bit before checking it.
	(stmt_useful_p): Remove GOTO_EXPR case. Check arms of COND_EXPR for
	GOTO. All other control flow stmts are necessary.
	(process_worklist): Dont look for control parents.
	(remove_dead_stmts): No dominattor info is necessary.
	(remove_dead_stmt): Don't need BB any more. Remove COND_EXPR by changing
	the condition to 'if (0)'. Abort on other control flow.
	(tree_ssa_dce): No longer need the hash table.
	(remove_conditional): Remove.

2003-09-25  Andreas Schwab  <schwab@suse.de>

	* tree-flow.h: Declare next_ssa_version.
	* tree-ssa-ccp.c: Remove conflicting declaration.
	* tree-ssa-live.c: Likewise.
	* tree.c (make_ssa_name): Likewise.

2003-09-24  Jason Merrill  <jason@redhat.com>

	* tree.h (DECL_SOURCE_LOCATION): Resurrect.
	(DECL_SOURCE_FILE, DECL_SOURCE_LINE): Likewise.
	(EXPR_LOCUS): Renamed from TREE_LOCUS.  Null for non-exprs.
	(SET_EXPR_LOCUS): New macro.
	(EXPR_FILENAME): Renamed from TREE_FILENAME.
	(EXPR_LINENO): Renamed from TREE_LINENO.
	(struct tree_common): Remove locus field.
	(struct tree_decl): Re-add locus field.
	(struct tree_expr): Add locus field.
	* c-aux-info.c, c-decl.c, coverage.c, c-parse.in, dbxout.c,
	diagnostic.c, dwarf2out.c, expr.c, function.c, gimplify.c,
	integrate.c, print-tree.c, stmt.c, tree.c, tree-cfg.c,
	tree-dump.c, tree-flow-inline.h, config/alpha/alpha.c,
	config/mips/mips.c: Adjust.

2003-09-24  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-ccp.c (enum latticevalue): Add UNINITIALIZED.
	(const_values, struct value_map_d): Remove hash table structures.
	(value_vector): New array of values.
	(get_value): Use value_vector instead of hash table. Mark inline.
	(visit_phi_node): Ignore arguments if the PHI result is already VARYING.
	(initialize): Initialize value vector instead of hash table.
	(finalize): Free value vector instead of hash table.
	(add_var_to_ssa_edges_worklist): Don't add to worklist if
	DONT_SIMULATE_AGAIN flag is set.
	(value_map_hash, value_map_eq): Delete.

2003-09-24  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_block): Create infrastructure for
	tracking const_and_copies equivalences which disappear when
	we leave the current block.  Use it for equivalences created
	by EQ_EXPR_VALUE.  Follow use-def chains for EQ_EXPR_VALUE
	equivalences and see if certain NOP_EXPRs can be ignored
	to create a block-local equivalence for const_and_copies.
	(optimize_stmt): Do not get confused by a cast of the return
	value from alloca or the address of a non-weak decl.

	* fold-const.c (fold_read_from_constant_string): New function.
	* tree.h (fold_read_from_constant_string): Prototype.
	* expr.c (expand_expr, case INDIRECT_REF):  Use it.
	(expand_expr, case ARRAY_REF): Likewise.  Put checking code
	inside an ENABLE_CHECKING.
	* tree-ssa-ccp.c (fold_stmt): Use fold_read_from_constant_string.
	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Likewise.

2003-09-23  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_block): Ignore "useless" type
	conversions in SWITCH_COND when creating equivalenecs at
	case labels.

2003-09-22  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Addresses of non-weak symbols
	as well as dynamically allocated stack space are always nonzero.

	* tree-cfg.c (handle_switch_split): Properly mark the fallthru
	edge from SRC to DEST with EDGE_FALLTHRU.

2003-09-22  Daniel Berlin  <dberlin@dberlin.org>

	* tree-flow.h (struct bb_ann_d): Add erefs array.
	* tree-ssa-pre.c (handle_bb_creation): Remove ei parameter.
	Update caller.
	(struct expr_info): Remove erefs array.
	(append_eref_to_block): New function.
	(clear_all_eref_arrays): Ditto.
	(expr_phi_insertion): Use append_eref_to_block.
	(insert_occ_in_preorder_dt_order_1): Ditto.
	(subst_phis): Only copy expression, not the containing EUSE/EPHI.
	Update all callers to reflect this.
	(compute_will_be_avail): Update for per-block eref array.
	(handle_bb_creation): Ditto.
	(pre_expression): Ditto.
	(tree_perform_ssapre): Clear eref arrays when done with expression.

2003-09-22  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (dump_tree_bb): Remove superlfuous newlines.

2003-09-21  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (compute_alias_sets): Use TDI_alias instead of
	TDI_ssa.
	* tree-dump.c (dump_files): Add enties for TDI_alias, TDI_ssa1,
	TDI_dom1, TDI_ssa2, TDI_dce1, TDI_ssa3, TDI_dom2, TDI_ssa4,
	TDI_ssa5 and TDI_dce2.
	Remove entries for TDI_ssa, TDI_dom and TDI_dce.
	* tree.h (enum tree_dump_index): Similarly.
	(TDF_ALIAS): Remove.
	(TDF_VOPS): Change value.
	* doc/invoke.texi (-fdump-tree-alias): Document.
	* tree-flow.h (tree_warn_uninitialized): Remove unused variable.
	(rewrite_into_ssa): Add enum tree_dump_index argument.  Update all
	callers.
	(rewrite_out_of_ssa): Likewise.
	(tree_perform_ssa_pre): Likewise.
	(tree_ssa_dominator_optimize): Likewise.
	(tree_ssa_dce): Likewise.
	(tree_ssa_copyprop): Likewise.
	(tree_ssa_ccp): Likewise.
	Add sbitmap argument.
	(tree_compute_must_alias): Likewise.
	(mark_new_vars_to_rename): Declare.
	* tree-must-alias.c (tree_compute_must_alias): Do not call
	rewrite_into_ssa.
	Remove local vars_to_rename.  Use new argument instead.
	* tree-optimize.c (optimize_function_tree): Re-write optimization
	ordering to support passes that need the SSA form updated.
	Call tree_ssa_dominator_optimize.
	Re-arrange optimization ordering.
	* tree-ssa-ccp.c (substitute_and_fold): Take new argument
	vars_to_rename.
	Call mark_new_vars_to_rename.
	(visit_phi_node): Move variable 'val' into the right scope.
	(initialize): Move call dump_begin ...
	(tree_ssa_ccp): ... here.
	* tree-ssa-dom.c (mark_new_vars_to_rename): Declare extern.
	Make sure that variables in virtual operands aren't marked
	unnecessarily.
	* tree-ssa.c (rewrite_into_ssa): Do not call
	tree_ssa_dominator_optimize.

2003-09-21  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-dce.c (dom_info): Remove unused variable.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize): If the CFG has been
	altered, call cleanup_tree_cfg.
	Call cleanup_tree_cfg before returning.
	* tree-ssa-pre.c (tree_perform_ssapre): Call get_stmt_operands
	before processing the statement.
	* tree-ssa-dom.c (thread_edge): Remove attribute EDGE_FALLTHRU from
	edge.

2003-09-21  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Break out of
	optimize_stmt.  Follow the def-use chains back for certain expressions
	to see if we can simplify the RHS of the current expression based
	on earlier expressions.

	* tree-ssa-dom.c (optimize_block): Rework code to propagate values
	into PHI nodes to be more efficient.

2003-09-20  Andrew MacLeod  <amacleod@redhat.com>

	* tree-flow.h (struct dataflow_d): Remove reaching fields, add 2 element
	vector of trees.
	* tree-flow-inline.h (immediate_uses): Rename to get_immediate_uses,
	return a dataflow object.
	(reaching_defs): Remove until needed.
	(num_immediate_uses): New. Return number of immediate uses.
	(immediate_use): New. Return a specified immediate use.
	* tree-dfa.c (add_immediate_use): Use new fields.
	(dump_immediate_uses_for): Use new interface.
	(create_phi_node): Chain to start of list.
	* tree-ssa-ccp.c (add_var_to_ssa_edges_worklist): Use new interface.
	* tree-ssa.c (compute_global_livein): Loop interchange.

2003-09-18  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Allow optimizing the RHS of a
	MODIFY_EXPR even if we can't record any equivalences created by
	the MODIFY_EXPR.  Move code to simplify ABS_EXPR, TRUNC_DIV_EXPR
	and TRUNC_MOD_EXPR to an earlier position.

2003-09-19  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-ccp.c (cfg_edges): Rename to cfg_blocks.
	(cfg_blocks_num, cfg_blocks_head, cfg_blocks_tail): New. Queue markers.
	(bb_in_list): New. Vector indicating if a BB is in the cfg_blocks list.
	(tree_ssa_ccp): Use new routines.
	(add_control_edge): Add to cfg_blocks list.
	(initialize): Initialize new variables.
	(finalize): Free allocations.
	(cfg_blocks_empty): New. Is cfg_blocks queue list.
	(cfg_blocks_add): New. Add a basic block to cfg_blocks list.
	(cfg_blocks_pop): New. Get a basic_block from the list.

2003-09-18  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (struct rusv_data): Add may_throw, may_branch.
	(remove_useless_stmts_and_vars_1): Set them.
	(remove_useless_stmts_and_vars_goto): Likewise.
	(remove_useless_stmts_and_vars_tf): Transform to compound_expr
	if only fallthrough.
	(remove_useless_stmts_and_vars_tc): Kill region if nothrow.
	Detect catch regions that don't propagate exceptions.
	(remove_useless_stmts_and_vars): Zero entire data struct.

2003-09-18  Richard Henderson  <rth@redhat.com>

	* tree-eh.c (lower_try_finally_dup_block): New.
	(honor_protect_cleanup_actions, lower_try_finally_copy): Use it.

2003-09-18  Richard Henderson  <rth@redhat.com>

	* tree-cfg (remove_useless_stmts_and_vars_cond,
	remove_useless_stmts_and_vars_tf,
	remove_useless_stmts_and_vars_tc,
	remove_useless_stmts_and_vars_bind,
	remove_useless_stmts_and_vars_goto): Break out of ...
	(remove_useless_stmts_and_vars_1): ... here.  Rename to _1;
	take and use struct rusv_data.
	(remove_useless_stmts_and_vars): New.  Loop until no change.
	* tree-flow.h (remove_useless_stmts_and_vars): Update decl.
	* tree-ssa.c (rewrite_out_of_ssa): Don't loop here.

2003-09-18  Richard Henderson  <rth@redhat.com>

	* tree-pretty-print.c (dump_generic_node): Don't double indent asms.

2003-09-18  Richard Henderson  <rth@redhat.com>

	* tree-eh.c: Include langhooks.h, remove errors.h.
	(decide_copy_try_finally): Use estimate_num_insns to choose
	between copy and switch implementations.

	* c-common.c (c_estimate_num_insns): Take an expr, not a decl.
	* tree-inline.c (limits_allow_inlining): Pass it the body of the decl.

2003-09-18  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (lookup_avail_expr): New argument which indicates
	if the expression should be entered into the hash table.  All
	callers updated.
	(update_rhs_and_lookup_avail_expr): New function factored out
	of optimize_stmt.

	* tree.h (commutative_tree_code, associative_tree_code): Declare
	* tree.c (commutative_tree_code, associative_tree_code): New
	functions.
	(iterative_hash_expr): Use commutative_tree_code.
	* fold-const.c (operand_equal_p): Use commutative_tree_code
	rather than inlining the communitivy check.
	(fold, nondestructive_fold_binary_to_constant): Similarly.

2003-09-18  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-eh.o): Add dependency on errors.h
	* tree-eh.c: Include errors.h

2003-09-17  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (remove_useless_stmts_and_vars): Revert last change.
	* tree-flow.h, tree-ssa.c: Likewise.

2003-09-17  Richard Henderson  <rth@redhat.com>

	* tree-eh.c (decide_copy_try_finally): Remove forgotten debug code.

2003-09-17  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (pick_ssa_name): New function.
	(code_motion): Use it.

2003-09-17  Richard Henderson  <rth@redhat.com>

	* tree-eh.c: New file.
	* Makefile.in (OBJS-common): Add it.
	(tree-eh.o): New.
	* calls.c (emit_call_1): New argument for full call expr.
	Check with lookup_stmt_eh_region to set REG_EH_REGION.
	(expand_call): Likewise for tail-calls.
	* except.c (struct eh_region): Add tree_label.
	(gen_eh_region, gen_eh_region_cleanup, gen_eh_region_try,
	gen_eh_region_catch, gen_eh_region_allowed,
	gen_eh_region_must_not_throw, get_eh_region_number,
	get_eh_region_may_contain_throw, get_eh_region_tree_label,
	set_eh_region_tree_label, expand_resx_expr): New.
	(expand_eh_region_start, expand_start_catch): Use them.
	(expand_end_catch): Tidy.
	(note_eh_region_may_contain_throw): Take region argument.
	(note_current_region_may_contain_throw): New.
	(get_exception_filter): Export.
	(collect_eh_region_array): Export.
	(remove_unreachable_regions): Check ERT_TRY based on reachability
	of catches, not reachability of continue_label.  Never remove
	ERT_MUST_NOT_THROW regions.
	(collect_rtl_labels_from_trees): New.
	(convert_from_eh_region_ranges): Use it.
	(connect_post_landing_pads): Handle dying cleanups.
	(struct reachable_info): Add callback data.
	(add_reachable_handler): Invoke the callback.
	(foreach_reachable_handler): New.
	(reachable_handlers): Use it.
	(arh_to_landing_pad, arh_to_label): New.
	(can_throw_internal_1): Split out from can_throw_internal.
	(can_throw_external_1): Similarly.
	* except.h: Update.
	* expr.c (expand_expr): Handle RESX_EXPR, FILTER_EXPR.
	* gimplify.c (gimplify_modify_expr): Use tree_could_trap_p.
	* stmt.c (using_eh_for_cleanups_p): Export.
	(expand_return): Allow any typed rhs.
	* timevar.def (TV_TREE_EH): New.
	* tree-cfg.c (eh_stack): Kill.
	(build_tree_cfg): Don't set it.  Kill code to handle EH.
	(could_trap_p): Move to tree-eh.c as tree_could_trap_p.
	(get_eh_region_type, make_try_expr_blocks, make_catch_expr_blocks,
	make_eh_filter_expr_blocks, try_finallys): Kill.
	(make_edges): Kill code to handle EH.
	(make_ctrl_stmt_edges): Kill TRY_FINALLY_EXPR, CATCH_EXPR,
	EH_FILTER_EXPR.  Handle RESX_EXPR.
	(make_call_expr_edges): Kill.
	(make_exit_edges): Use make_eh_edges.
	(label_to_block): New.
	(make_goto_expr_edges): Use it.
	(is_ctrl_stmt): Add RESX_EXPR.
	(is_ctrl_altering_stmt): Restructure.  Use tree_can_throw_internal.
	(last_exec_block, compute_reachable_eh): Kill.
	* tree-dfa.c (get_stmt_operands): Add RESX_EXPR.
	(get_expr_operands): Add FILTER_EXPR.
	* tree-dump.c (dump_files): Add tree-eh.
	* tree-flow.h (struct stmt_ann_d): Kill reachable_exception_handlers.
	(label_to_block, lower_eh_constructs, make_eh_edges,
	tree_could_trap_p, tree_could_throw_p, tree_can_throw_internal,
	tree_can_throw_external): Declare.
	* tree-optimize.c (optimize_function_tree): Call lower_eh_constructs.
	(tree_rest_of_compilation): Save tree for inlining.
	* tree-pretty-print.c (dump_generic_node): Handle FILTER_EXPR,
	RESX_EXPR.
	* tree-simple.c (is_gimple_stmt): Add RESX_EXPR.
	(is_gimple_val): Add FILTER_EXPR.
	* tree-ssa-dce.c (stmt_useful_p): Restructure.  Add lhs of
	EXC_PTR_EXPR or FILTER_EXPR.
	* tree.def (FILTER_EXPR, RESX_EXPR): New.
	* tree.h (enum tree_dump_index): Add TDI_eh.

2003-09-17  Richard Henderson  <rth@redhat.com>

	* tree.c (tsi_link_before): Remove unnecessary parens.
	(tsi_link_chain_before, tsi_delink): Likewise.
	(tsi_link_after): Accept the case if the iterator points
	to a NULL node; treat it as an empty list.
	(tsi_link_chain_after): Likewise.  Update iterator properly
	for TSI_CHAIN_END.

2003-09-17  Richard Henderson  <rth@redhat.com>

	* tree-inline.c (debug_find_tree_1, debug_find_tree): New.

2003-09-17  Richard Henderson  <rth@redhat.com>

	* tree-cfg.c (struct rusv_data): New.
	(remove_useless_stmts_and_vars_1): Rename from
	remove_useless_stmts_and_vars.  Use rusv_data.  Handle goto-next
	via remembering the last goto seen, and zapping it when appropriate.
	(remove_useless_stmts_and_vars): New.  Loop until done.
	* tree-flow.h (remove_useless_stmts_and_vars): Update decl.
	* tree-optimize.c (optimize_function_tree): Don't cache fnbody.
	Dump data after remove_useless_stmts_and_vars.
	* tree-ssa.c (rewrite_out_of_ssa): Kill loop around
	remove_useless_stmts_and_vars.
	* tree-dump.c (dump_files): Add .useless.
	* tree.h (enum tree_dump_index): Add TDI_useless.

2003-09-17  Diego Novillo  <dnovillo@redhat.com>

	* pretty-print.c (pp_write_text_to_stream): Export.
	* pretty-print.h (pp_write_text_to_stream): Declare.
	* tree-pretty-print.c (print_generic_stmt): Flush to file.
	(dump_generic_node): Call pp_write_text_to_stream.
	(maybe_init_pretty_print): Take file argument; associate the
	stream with the buffer.

2003-09-17  Jeff Law  <law@redhat.com>

	* tree-ssa-ccp.c (ccp_fold): If the return value has the wrong
	type, try to convert it to the proper type rather than failing.

	* tree-ssa-dom.c (optimize_stmt): Note that the statement is
	modified, even if we just change the virtual operands.  If
	the statement was modified by const/copy propagation, then
	set may_have_exposed_new_symbols.

2003-09-17  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_vars_r): Do not consider 'void *' pointers as
	dereferenced when scanning function call arguments.
	* tree-flow-inline.h (may_propagate_copy): Block propagation of
	pointers when they have different memory tags.
	* tree-ssa-copyprop.c (propagate_copy): When copy propagating
	pointers, abort if the two pointers don't have identical memory
	tags.

2003-09-16  Jeff Law  <law@redhat.com>

	* tree-ssa-ccp.c (visit_stmt): Do not set DONT_SIMULATE_AGAIN
	just because a statement as virtual definitions.
	(likely_value): A CALL_EXPR is assumed to return a VARYING
	result, regardless of its operands.

2003-09-15  Jason Merrill  <jason@redhat.com>

	* tree-simple.c (is_gimple_val): Allow addresses of all decls.
	(is_gimple_const): Allow addresses of all non-weak statics.
	* tree-ssa-ccp.c (fold_stmt): Return bool.
	* tree-flow.h: Adjust prototype.
	* tree-ssa-dom.c (optimize_stmt): If folding changed stuff, we
	need to recalculate the vops.

2003-09-13  Diego Novillo  <dnovillo@redhat.com>

	Fix PR optimization/12268
	* tree-dfa.c (add_referenced_var): Call-clobbered pointers may
	point to global memory.

2003-09-13  Jason Merrill  <jason@redhat.com>

	* c-common.c (c_apply_type_quals_to_decl): Unset TREE_READONLY for
	types with constructors.
	Remove superfluous references to TREE_TYPE (decl).

2003-09-13  Diego Novillo  <dnovillo@redhat.com>

	* opts.c (decode_options): Enable must-alias optimization by default.
	* tree-dfa.c (get_expr_operands): Always call add_stmt_operand when
	dealing with ADDR_EXPR nodes.
	(add_stmt_operand): If the variable has an alias set
	of size zero, abort.
	Call get_base_symbol() to retrieve the variable from an ADDR_EXPR
	node.
	(compute_alias_sets): Deep copy the aliases array when triggering
	the alias grouping heuristic.
	Don't group aliases if -ftree-must-alias is given.
	* tree-must-alias.c (tree_compute_must_alias): Call
	dump_referenced_vars when doing detailed dumps.
	Rename promoted_vars to vars_to_rename.  Update all users.
	(find_addressable_vars): Always mark statements modified.
	(promote_var): Also mark aliases of promoted variable to be
	renamed.
	Call find_variable_in and remove_element_from to update varrays for
	call-clobbered variables and alias sets.
	(find_variable_in): New local function.
	(remove_element_from): New local function.
	* varray.c (varray_copy): New function.
	* varray.h (varray_copy): Declare.

2003-09-13  Diego Novillo  <dnovillo@redhat.com>

	* tree-flow-inline.h (is_optimizable_addr_expr): Remove.  Update
	all users.
	* tree-ssa-dom.c (optimize_stmt): Do not propagate SSA names from
	redundant expressions across abnormal edges.

2003-09-13  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (remove_unreachable_blocks): Clean up.
	(debug_tree_bb_n): New.
	(is_ctrl_structure): Remove LOOP_EXPR.
	* tree-flow.h (debug_tree_bb_n): Declare.

2003-09-12  Andrew Macleod  <amacleod@redhat.com>

	* tree-ssa-live.c (calculate_live_on_entry): Use default_def to add
	addition checks to live on entry calculations.
	* tree-ssa.c (print_exprs_edge): New debug output function.
	(coalesce_abnormal_edges): Add basic block information to output.
	(coalesce_ssa_name): Use default_def instead of trying to compute live
	on entry variables.

2003-09-12  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (tree_rest_of_compilation): Set TREE_ASM_WRITTEN
	for functions that have errors.

2003-09-12  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-pre.c (graph_dump_file, graph_dump_flags): Remove
	unused variables.

2003-09-11  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (reset_down_safe): Make test less conservative.
	(cba_search_start_from): Start from abnormal edge arguments, too.
	(cba_search_continue_from_to): Ditto here.

2003-09-11  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c: s/#if ENABLE_CHECKING/#ifdef ENABLE_CHECKING/g.
	Add more comments to DFS searching functions.
	(cba_search_reach_from_to): Remove empty function.
	(code_motion): Remove #if 0'd code.
	(pre_expression): Ditto.
	* tree.h (tree_dump_index): Remove TDI_predot.
	* tree-dump.c (dump_files): Ditto.

2003-09-11  Jason Merrill  <jason@redhat.com>

	Make EDGE_FALLTHRU meaningful for tree-cfg.
	* tree-cfg.c (make_edges): Set EDGE_FALLTHRU on fallthrough edge.
	(make_exit_edges): Likewise.
	(make_ctrl_stmt_edges): Don't set EDGE_FALLTHRU on edges into a
	control structure.
	(handle_switch_fallthru): Clear EDGE_FALLTHRU after inserting a goto.
	(find_insert_location): Only insert after a CALL_EXPR or MODIFY_EXPR.
	(bsi_insert_on_edge_immediate): Count outgoing abnormal edges.
	Insert before all control stmts.
	(bsi_link_after): Handle a block with nops after the last stmt.

	Rename some things to clarify difference between "control structures"
	(i.e. COND_EXPR) and "control statements" (also GOTO_EXPR).
	* basic-block.h (BB_CONTROL_STRUCTURE): Rename from BB_CONTROL_EXPR.
	* tree-cfg.c (REMOVE_NON_CONTROL_STRUCTS): Rename from
	REMOVE_NON_CONTROL_STMTS.
	(REMOVE_CONTROL_STRUCTS): Rename from REMOVE_CONTROL_STMTS.
	(make_ctrl_stmt_edges): Move GOTO_EXPR/RETURN_EXPR handling here...
	(make_exit_edges): ...from here.
	(is_ctrl_altering_stmt): Don't accept GOTO_EXPR/RETURN_EXPR.
	(is_ctrl_structure): Renamed from old is_ctrl_stmt.
	(is_ctrl_stmt): New fn.
	(bsi_move_to_bb_end): Use it.
	(stmt_starts_bb_p): Use is_ctrl_stmt and is_ctrl_altering_stmt.
	* tree-flow.h: Add prototype.
	* tree-ssa-ccp.c, tree-ssa-dom.c: Update for name changes.

2003-09-10  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (ephi_has_bottom): Remove dead function.
	(ephi_has_unsafe_arg): New function.
	(compute_down_safety): Use it.
	(reset_down_safe): Continue search on abnormal edges, too.

2003-09-10  Jason Merrill  <jason@redhat.com>

	* gimplify.c (gimplify_asm_expr): Add post_p parm.
	(get_initialized_tmp_var): Add post_p parm.
	(internal_get_tmp_var): Likewise.
	(gimplify_expr, get_formal_tmp_var): Pass it.
	* c-simplify.c (gimplify_decl_stmt): Pass it.
	* tree-simple.h: Adjust prototype.

	* tree-cfg.c (make_call_expr_edges): Break out from...
	(make_exit_edges): ...here.  Check TREE_NOTHROW.
	(is_ctrl_altering_stmt): Check TREE_NOTHROW.

2003-09-10  Paul Brook  <paul@nowt.org>

	* gimplify.c (gimplify_compound_lval): Treat REALPART_EXPR and
	IMAGPART_EXPR the same as COMPONENT_REF.
	* tree-simple.c (is_gimple_addr_expr_arg): Ditto.
	(is_gimple_lvalue): Remove REALPART_EXPR and IMAGPART_EXPR.

2003-09-10  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c (decl_name_str): New local function.
	(pp_c_direct_declarator): Call it.
	(pp_c_primary_expression): Call it.
	(pp_c_id_expression): Call it.
	(pp_c_statement): Call it.

2003-09-10  Diego Novillo  <dnovillo@redhat.com>

	* tree-pretty-print.c (dump_generic_node): Change string used to
	display _DECL nodes with no DECL_NAME.

2003-09-10  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_referenced_var): Handle cases when argument
	walk_state is NULL.
	(add_referenced_tmp_var): New function.
	* tree-flow.h (add_referenced_tmp_var): Declare it.
	* tree-ssa-pre.c (pre_expression): Call it.
	* tree-ssa-live.c (create_ssa_var_map): Add checking for variables
	being in real and virtual operands.

2003-09-01  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
	    Jeff Law  <law@redhat.com>

	* tree-flow.h (remove_unreachable_blocks): Declare.
	* tree-cfg.c (remove_unreachable_blocks): Export. Return true
	if blocks were removed.
	* tree-ssa-dom.c (optimize_block, optimize_stmt): Record whether
	the cfg has changed.  Schedule jump threading.  If a block
	has more than one pred, then do not record equivalences created
	by a controlling COND_EXPR.
	(edges_to_redirect, redirection_targets): New variables.
	(thread_edge): Split out of optimize_block.
	(tree_ssa_dominator_optimize); Remove unreachable blocks and
	recompute dominator tree when the cfg changes.

2003-09-07  Steven Bosscher  <steven@gcc.gnu.org>

	* c-tree.h: Don't declare c_genericize, it's already
	declared in c-common.h.

2003-09-07  Steven Bosscher  <steven@gcc.gnu.org>

	Fix PR optimization/12198
	* tree-cfg.c (value_matches_some_label): Handle integer
	case ranges.

2003-09-06  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-iterator.h (tsi_iterator_update): Added TSI_CHAIN_START,
	TSI_CHAIN_END, TSI_CONTINUE_LINKING and comments.
	(tsi_link_chain_before, tsi_link_chain_after): Declare.
	* tree.c (tsi_link_chain_before, tsi_link_chain_after): New.
	(tsi_link_before, tsi_link_after): Handle new TSI_...
	positions.

2003-09-06  Diego Novillo  <dnovillo@redhat.com>

	* varray.c (element): Add entry for 'tree *'.
	* varray.h (enum varray_data_enum): Add VARRAY_DATA_TREE_PTR.
	(union varray_data_tag): Add entry for 'tree *'.
	(VARRAY_TREE_PTR_INIT): Define.
	(VARRAY_TREE_PTR): Define.
	(VARRAY_PUSH_TREE_PTR): Define.
	(VARRAY_TOP_TREE_PTR): Define.
	* tree-cfg.c: Replace uses of VARRAY_GENERIC_PTR with
	VARRAY_TREE_PTR when accessing operand arrays.
	* tree-ssa-ccp.c: Likewise.
	* tree-ssa-copyprop.c: Likewise.
	* tree-ssa-dce.c: Likewise.
	* tree-ssa-dom.c: Likewise.
	* tree-ssa-live.c: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-dfa.c: Likewise.
	* tree-ssa.c: Likewise.
	* tree-flow.h (struct operands_d): Remove 'skip' GC markers from
	all fields.
	(struct dataflow_d): Likewise.

2003-09-05  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_referenced_vars): Re-enable .GLOBAL_VAR
	optimization.

2003-09-05  Daniel Berlin  <dberlin@dberlin.org>

	* tree.h (tree_eref_common): Make stmt a tree, not a tree *.
	* tree-ssa-pre.c: Transform all tree *'s to tree.

2003-09-05  Paul Brook  <paul@nowt.org>

	* tree.h (enum tree_index): Delete TI_SIGNED_SIZE_TYPE here.
	(signed_size_type_node): No longer a member of global_trees.
	* c-common.h (enum c_tree_index): New member CTI_SIGNED_SIZE_TYPE.
	(signed_size_type_node): Moved, now a member of c_global_trees.

2003-09-05  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_referenced_vars): Temporarily disable
	.GLOBAL_VAR optimization.

2003-09-04  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c:  Add overview.
	* tree-alias-ander.c: Add overview and more specific comments on what
	each function does.

2003-09-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (tree_rest_of_compilation): Return if errorcount
	or sorrycount are non-zero.

2003-09-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (cleanup_tree_cfg): Traverse basic blocks
	with FOR_EACH_BB.
	(remove_useless_stmts_and_vars): Likewise.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Likewise.
	* tree-ssa.c (rewrite_into_ssa): Likewise.
	* tree-dfa.c (remove_all_phi_nodes_for): Make sure that the new
	list of PHI nodes is NULL-terminated.
	Add sanity checks to make sure all the PHI nodes for variables to
	rename are gone.

2003-09-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (struct walk_state): Add field 'num_calls'.
	(add_call_clobber_ops): New local function.
	(add_call_read_ops): New local function.
	(get_expr_operands): Call them.
	(add_stmt_operand): Call-clobbered variables are always added to
	virtual operands.
	(find_referenced_vars): If the number of call-clobbered variables
	and number of call sites is larger than a certain threshold, group
	all call-clobbered variables under .GLOBAL_VAR.
	(find_vars_r): Count the number of call sites.
	Don't add .GLOBAL_VAR to the list of referenced variables.
	(add_referenced_var): If the addressable variable is an array,
	register alias set of the type of the elements, not the type of the
	array.
	* tree-ssa-dom.c (mark_new_vars_to_rename): Rename from
	find_new_vars_to_rename.  Update all users.
	Before scanning the statement for new operands, mark the existing
	virtual operands to be renamed again.
	(optimize_stmt): Also check for newly exposed variables when doing
	redundancy elimination.
	* tree-ssa.c (rewrite_into_ssa): Don't abort when rename_count is
	greater than 2.  Simply stop trying at 3.
	(prepare_operand_for_rename): New function.
	(mark_def_sites): Call it.
	(rewrite_stmt): Don't check if the operand is an SSA_NAME before
	calling rewrite_operand.
	(rewrite_operand): Don't abort if the operand was already an
	SSA_NAME.  Ignore it.

2003-09-03  Richard Henderson  <rth@redhat.com>

	* tree-optimize.c (set_save_expr_context, clear_decl_rtl,
	tree_rest_of_compilation): Merge from mainline new file.
	* Makefile.in (tree-optimize.o): Update.
	* c-semantics.c (expand_stmt_toplev): New.
	* c-common.h (expand_stmt_toplev): Declare.
	* c-lang.c, objc/objc-lang.c (LANG_HOOKS_RTL_EXPAND_STMT): Use it.

2003-09-03  Richard Henderson  <rth@redhat.com>

	* gimplify.c (gimplify_switch_expr): Leave the outermost cast
	as part of the switch condition.

2003-09-02  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree.o): Add dependency on $(BASIC_BLOCK_H) and
	$(TREE_FLOW_H)
	* tree.c: Include basic-block.h and tree-flow.h
	(tsi_link_after): Adjust basic block tree pointers when inserting a
	new COMPOUND_EXPR.

2003-09-02  Richard Henderson  <rth@redhat.com>

	* c-decl.c (finish_function): Fix misapplied patch.  Don't
	free_after_parsing or free_after_compilation.  For real this time.

2003-09-01  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (finalize_1):  Remove unnecessary call to
	insert_euse_in_preorder_dt_order.
	(code_motion): Ditto.
	(pre_expression): Ditto.

2003-09-01  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
	    Jeff Law  <law@redhat.com>

	* basic-block.h (BB_LOOP_CONTROL_EXPR): Remove.
	* c-simplify.c (gimplify_c_loop): Create loops in a better shape.
	* cfgloop.h (create_loop_notes): Declare.
	* cfgloopmanip.c (create_loop_notes): New.
	* explow.c (probe_stack_range): Don't produce loop notes when we
	recreate them.
	* expr.c (emit_block_move_via_loop): Ditto.
	* gimplify.c (build_and_jump): Export.
	(gimplify_loop_expr): Don't produce LOOP_EXPRs.
	* toplev.c (rest_of_compilation): Recreate loop notes if needed.
	* tree-cfg.c (make_loop_expr_edges, make_loop_expr_blocks): Removed.
	(find_contained_blocks, make_ctrl_stmt_edges,
	remove_useless_stmts_and_vars, stmt_ends_bb_p, bsi_insert_before,
	find_insert_location, bsi_insert_on_edge_immediate,
	merge_tree_blocks): Remove handling of LOOP_EXPRs.
	(remove_stmt): Remove handling of BB_LOOP_CONTROL_EXPR.
	(find_taken_edge): Remove comment on LOOP_EXPRs.
	(dump_tree_bb): Don't dump loop-related information.
	(is_loop_stmt, is_latch_block_for): Removed.
	(find_insert_location): Handle TRY_CATCH and TRY_FINALLY.
	* tree-flow.h (is_loop_stmt, loop_body, set_loop_body,
	is_latch_block_for): Removed.
	* tree-dfa.c (get_stmt_operands): Don't handle LOOP_EXPRs.
	* tree-simple.c (is_gimple_stmt): Remove handling of LOOP_EXPRs.
	* tree-simple.h: Remove LOOP_EXPRs from gimple grammar comment.
	(build_and_jump): Declare.
	* tree-ssa.c (remove_annotations_r): Don't handle LOOP_EXPRs.

2003-08-29  Daniel Berlin  <dberlin@dberlin.org>

	* opts.c (decode_options): Turn on SSAPRE by default.

2003-08-29  Jason Merrill  <jason@redhat.com>

	* builtins.c (simplify_builtin): Make sure that the replacement
	has the same type as the original expression.
	(simplify_builtin_strpbrk): Fix type of COMPOUND_EXPR.
	(simplify_builtin_strncpy, simplify_builtin_memcmp): Likewise.
	(simplify_builtin_strncmp, simplify_builtin_strncat): Likewise.
	(simplify_builtin_strspn, simplify_builtin_strcspn): Likewise.
	(simplify_builtin_fputs, simplify_builtin_sprintf): Likewise.

2003-08-28  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* builtins.c (expand_builtin): Expand BUILT_IN_STACK_SAVE and
	BUILT_IN_STACK_RESTORE.
	* builtins.def (BUILT_IN_STACK_SAVE, BUILT_IN_STACK_RESTORE): New.
	* gimplify.c (build_stack_save_restore): New functions.
	(struct gimplify_ctx): New field save_stack.
	(gimplify_bind_expr, gimplify_call_expr): Arrange save of stack on
	BIND_EXPR entry and restore on exits.
	* stmt.c (expand_stack_alloc): Saving of stack removed.
	(expand_stack_save, expand_stack_restore): New.
	* tree.h (expand_stack_save, expand_stack_restore): Declare.

2003-08-28  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_vdef): Check for duplicate voperands first.
	Handle SSA_NAME in voperands.
	(add_vuse): Likewise.

2003-08-27  Diego Novillo  <dnovillo@redhat.com>

	* tree-flow.h (var_ann_d): Convert is_in_va_arg_expr into a
	bitfield.

2003-08-27  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c: Update comments to reflect reality.
	(insert_one_operand): Remove #if'0d code.

2003-08-27  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* gcov.c (typedef struct arc_info): New field cs_count.
	(accumulate_line_counts): Find cycles correctly.

2003-08-27  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (compute_du_info): Move #if ENABLE_CHECKING up one
	line.

2003-08-27  Daniel Berlin  <dberlin@dberlin.org>

	* tree.h (struct ephi_arg_d): New structure.
	(struct eref_common): Remove non-used members, move some members
	elsewhere.
	(struct ephi_node): Ditto.

	* tree-optimize.c (optimize_function_tree): Move PRE before DCE.

	* tree.c (tree_size): use sizeof (struct ephi_arg_d) for ephi's.

	* tree-pretty-print.c (dump_generic_node): Re-teach to pretty
	print euses/ephis/etc given new structures, members, and
	relationships.

	* tree-ssa-pre.c (fixup_domchildren): Removed.
	(a_dom_b): Ditto.
	(calculate_preorder): Ditto.
	(defs_match_p): Ditto.
	(defs_y_dom_x): Ditto.
	(compute_can_be_avail): Ditto.
	(reset_can_be_avail): Ditto.
	(reset_later): Ditto.
	(compute_later): Ditto.
	(repair_*): Ditto.
	(set_replacement): Ditto.
	(remove_ephi): Ditto.
	(set_expruse_def): Ditto.
	(occ_compare): Ditto.
	(defs_hash_expr): Ditto.
	(compute_dt_preorder): Ditto
	(search_dt_preorder): Ditto.
	(ephi_operand_for_pred): Ditto.
	(injured_ephi_operand): Ditto.
	(compute_stops): New function.
	(occ_identical_to): Ditto.
	(require_phi): Ditto.
	(do_ephi_df_search_1): Ditto.
	(do_ephi_df_search): Ditto.
	(any_operand_injured): Ditto.
	(compute_du_info): Ditto.
	(add_ephi_use): Ditto.
	(insert_one_operand): Ditto.
	(add_ephi_pred): Ditto.
	(created_phi_preds): New bitmap.
	(dfn) Removed static variable.
	(idom_of_ephi): Ditto.
	(avdefs): Move into expr_info).
	(struct ephi_use_entry): New structure for EPHI uses.
	(struct ephi_df_search): New structure for depth first searchs.
	(cant_be_avail_search): Implementation of structure for
	cant_be_avail search.
	(stops_search): Ditto for stops.
	(replacing_search): Ditto for replacing_search.
	(do_proper_save): Arguments changed, callers updated.
	(create_ephi_node): Use sizeof (struct ephi_arg_d).
	(ephi_has_bottom): Rewrite for updated ephi-pred handling.
	(ephi_will_be_avail): Rewrite in terms of CANT_BE_AVAIL and STOPS.
	(expr_phi_insertion): Remove dead code.
	Update for new flags.
	(insert_occ_in_preorder_dt_order_1): Only insert one ephi-pred per
	block.
	Fix exit occurence handling.
	(rename_1): Remove occs stuff.
	Update for new ephi-pred handling.
	(reset_down_safe): Update for new ephi-pred handling.
	(compute_down_safe): Ditto.
	(can_insert): Ditto.
	(insert_one_operand): Split out from finalize_1.
	(finalize_1): Update for new ephi-pred handling.
	Only insert non-pointless, will-be-avail phis, rather than *all*
	ephis.
	(get_temp): New function. Hand us the right temporary for a given
	EPHI/EUSE.
	(code_motion): Use EREF_TEMP again, now that we can do it
	properly.

2003-08-26  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* builtins.c (expand_builtin): Handle STACK_ALLOC.
	* builtins.def (BUILT_IN_STACK_ALLOC): New.
	* c-simplify.c (gimplify_decl_stmt, c_gimplify_stmt,
	gimplify_compound_literal_expr): Arrange explicit stack allocation.
	* expr.c (expand_expr): Handle deferred variables.
	* stmt.c (expand_stack_alloc): New.
	* tree-simple.c (is_gimple_val): Prevent ADDR_EXPRs of vla's from
	being reduced.
	* tree.h (expand_stack_alloc): Declare.

2003-08-26  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa.c (build_dominator_tree): Use FOR_EACH_BB.

2003-08-26  Jason Merrill  <jason@redhat.com>

	* tree-simple.c (is_gimple_val): Also disallow memory vars.

2003-08-25  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* integrate.c (copy_decl_for_inlining): Reset DECL_TOO_LATE.

2003-08-25  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-dom.c (optimize_block): Handle empty source block.

	* tree-ssa-dom.c (optimize_block):  Handle case when dominance
	tree children have also other sucessors.  Add dump to jump
	threading.

2003-08-25  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (mark_labels_r): New fn.
	(gimplify_decl_stmt): Use it to mark labels in static initializers.
	* tree-simple.c (is_gimple_initializer): Remove.
	(is_gimple_reg_type): New fn.
	(is_gimple_reg): Use it.  Handle SSA_NAMEs properly.
	* tree-simple.h: Adjust.
	* gimplify.c (gimplify_expr) <CONSTRUCTOR>: Do nothing here.

	* gimplify.c (create_tmp_var): Set DECL_IGNORED_P.

	* tree-inline.c (initialize_inlined_parameters): Improve error
	recovery.

	* gimplify.c (gimplify_boolean_expr): Just replace with a COND_EXPR.

2003-08-25  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (get_expr_operands): Don't create shared operands when
	folding *&VAR expressions.

2003-08-24  Diego Novillo  <dnovillo@redhat.com>

	* tree-flow.h (struct var_ann_d): Add field default_def.
	(widen_bitfield): Declare.
	(set_default_def): Declare.
	(default_def): Declare.
	* tree-flow-inline.h (set_default_def): New inline function.
	(default_def): New inline function.
	* tree-dfa.c (dump_variable): Display default_def, if set.
	* tree-simple.c (is_gimple_reg): Check for DECL_P before checking
	for DECL_EXTERNAL.
	* tree-ssa-dom.c (add_expr_propagated_p): Remove.  Update all
	users.
	(find_new_vars_to_rename): New local function.
	(tree_ssa_dominator_optimize): Add new argument vars_to_rename.
	Change return type to void.  Update all users.
	(optimize_block): Add new argument vars_to_rename.  Update all
	users.
	If the call to optimize_stmt returns true, add the statement to the
	list of statements to re-scan for operands.
	After optimizing the block and its dominator children, call
	find_new_vars_to_rename for every statement that may have had new
	symbols exposed.
	(optimize_stmt): Change return type to bool.  Return true if the
	statement may have had new symbols exposed by optimization.
	Add a sanity check for the value returned by lookup_avail_expr.
	Create equivalences for more memory stores, not just the ones done
	via INDIRECT_REF expressions.
	Call widen_bitfield when optimizing stores to bitfields.
	(lookup_avail_expr): Reformat comment.
	* tree-ssa.c (rewrite_into_ssa): Remove local variable
	addr_expr_propagated_p.
	Clear out vars_to_rename before running dominator optimizations.
	(check_for_new_variables): Remove.
	(rewrite_stmt): Always register new definitions and virtual
	definitions.
	(register_new_def): Update comment.
	(get_reaching_def): Update the default_def field for the variable
	if it didn't have a reaching definition.
	* tree-ssa-ccp.c (widen_bitfield): Declare it extern.

2003-08-23  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (bsi_next_in_bb): Work correctly when the block ends
	with start of BIND_EXPR.

2003-08-23  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c (andersen_op_assign): Fix to join the operands,
	the assign to the lhs.

2003-08-23  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c (get_alias_var): Remove REFERENCE_EXPR.
	(find_func_aliases): Fix some not quite right predicates, add ARRAY_REF
	handling.

2003-08-22  Jeff Law  <law@redhat.com>

	* tree-dfa.c (compute_alias_sets): A memory tag used for stores can
	not conflict with objects marked TREE_READONLY.

	* tree-ssa-ccp.c (fold_stmt): Optimize reads from constant strings.

2003-08-22  Jason Merrill  <jason@redhat.com>

	* tree-simple.c: Total overhaul to only check forms and remove
	unnecessary predicates.
	(is_gimple_const): Accept function addresses here.
	Don't accept LABEL_DECL or RESULT_DECL.
	(is_gimple_val): Accept EXC_PTR_EXPR here.
	(is_gimple_lvalue): Rename from is_gimple_modify_expr_lhs.
	Accept BIT_FIELD_REF, REALPART_EXPR and IMAGPART_EXPR here.
	(is_gimple_addr_expr_arg): Replace with former is_gimple_varname.
	(is_gimple_constructor_elt): Just check for CONSTRUCTOR.
	(is_gimple_initializer): Just hand off to is_gimple_rhs.
	(is_gimple_rhs): Recognize most expressions here.
	(is_gimple_variable): New fn.
	(is_gimple_id): Use it.  Now static.
	(is_gimple_reg): New fn.
	(is_gimple_cast): Replace with former is_gimple_cast_op.
	(is_gimple_constructor, is_gimple_expr): Remove.
	(is_gimple_modify_expr, is_gimple_relop): Remove.
	(is_gimple_binary_expr, is_gimple_unary_expr): Remove.
	(is_gimple_call_expr, is_gimple_arglist): Remove.
	(is_gimple_compound_lval, is_gimple_arrayref): Remove.
	(is_gimple_compref, is_gimple_exprseq): Remove.
	(is_gimplifiable_builtin): Remove.
	* tree-simple.h: Adjust.
	* gimplify.c (gimplify_conversion): Break out from gimplify_expr.
	(gimplify_expr): Use is_gimple_reg predicate to force a temp.
	<COMPONENT_REF>: Use gimplify_compound_lval.
	<REALPART_EXPR, IMAGPART_EXPR>: Likewise.
	<INDIRECT_REF>: Use is_gimple_reg predicate.
	<MIN_EXPR, MAX_EXPR>: Use new gimplify_minimax_expr.
	<TREE_LIST>: Reject.
	(gimplify_tree_list, gimplify_component_ref): Remove.
	(gimplify_compound_lval): Include REALPART_EXPR and IMAGPART_EXPR.
	(gimplify_component_ref): Remove.
	(gimplify_call_expr): Handle non-gimplifiable builtins and walking
	the argument list here.
	(gimplify_tree_list): Remove.
	(gimplify_addr_expr): Use fb_either.
	* tree-simple.h: Adjust.
	* tree-alias-common.c (find_func_aliases): Update use of predicates.

2003-08-21  Andrew Pinski  <pinskia@physics.uc.edu>

	* tree-ssa.c (tree_ssa_useless_type_conversion): Check also the
	precision of the type to make sure they are really useless type
	conversions.

2003-08-21  Diego Novillo  <dnovillo@redhat.com>

	* tree-dump.c (dequeue_and_dump): Handle 'r' and 's' code classes.

2003-08-21  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* c-pretty-print.c (print_c_tree): Create new pp object.

2003-08-21  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Don't free hash tables
	before statistics are made from them.
	* tree-ssa.c (rewrite_into_ssa): Ditto.

2003-08-21  Jason Merrill  <jason@redhat.com>

	* tree-inline.c (copy_body_r): Don't convert when stripping &*.
	Fix thinko in stripping *&.

2003-08-21  Diego Novillo  <dnovillo@redhat.com>
	    Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-cfg.c (stmt_starts_bb_p): Nonlocal and computed GOTO targets
	always start a new block.

2003-08-20  Jason Merrill  <jason@redhat.com>

	* tree-pretty-print.c (dump_generic_node): Just print "<retval>"
	for the RESULT_DECL.

	* c-simplify.c (make_type_writable, mostly_copy_tree_r): Remove.
	(deep_copy_list, deep_copy_node): Remove.

	* expr.c (expand_expr): Don't check for 'r' or 's' if we're
	checking IS_EXPR_CODE_CLASS.
	* tree-dfa.c (may_access_global_mem_p): Likewise.
	* tree-browser.c (browse_tree): Likewise.
	* tree-ssa-pre.c (defs_hash_expr): Likewise.
	* gimplify.c (gimplify_expr): Likewise.
	(internal_get_tmp_var): Only copy TREE_LOCUS from an expr.
	(mostly_copy_tree_r): Ignore decls here.

2003-08-20  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c: Discard.  Replace with same file from
	mainline.  Update all users.
	(print_c_tree): New function.
	* c-pretty-print.h (print_c_tree): Declare.
	* tree-pretty-print.c: Update to use new pp_* primitives.
	* c-simplify.c: Include c-pretty-print.h.
	* Makefile.in (c-simplify.o): Add dependency on $(C_PRETTY_PRINT_H).

2003-08-20  Roger Sayle  <roger@eyesopen.com>

	* c-common.h (enum c_tree_index): Delete CTI_SIGNED_SIZE_TYPE.
	(signed_size_type_node): No longer a member of c_global_trees.
	* tree.h (enum tree_index): New member TI_SIGNED_SIZE_TYPE here.
	(signed_size_type_node): Moved, now a member of global_trees.

2003-08-20  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-dom.c (optimize_block): Thread jump into empty
	block correctly.

	* tree-cfg.c (linearize_cond_expr): Don't merge blocks if the
	later has other predecessors.

2003-08-19  Jason Merrill  <jason@redhat.com>

	* c-typeck.c (build_array_ref): Also build ARRAY_REFs from
	INDIRECT_REFs of ARRAY_TYPE.

	* tree-ssa.c (tree_ssa_useless_type_conversion): Also strip
	conversions between pointer and reference types.

	* tree-dfa.c (get_stmt_operands): Just mark non-GIMPLE statements
	as unmodified.
	(find_referenced_vars): So we don't need to mark them here.

	* tree-inline.c (inline_data): Add retvar field.
	(declare_return_variable): Set it.
	(remap_decls): Use it.
	(expand_call_inline): Tweak.

2003-08-19  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* cfg.c (dump_edge_info): Add name for EDGE_LOOP_EXIT flag.

2003-08-19  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-flow.h (struct var_ann_d): New field scope.
	(struct stmt_ann_d): New field scope.
	(propagate_copy): Declaration changed.
	(fixup_var_scope): Declare.
	* tree-cfg.c (make_blocks, make_cond_expr_blocks,
	make_catch_expr_blocks, make_eh_filter_expr_blocks,
	make_try_expr_blocks, make_loop_expr_blocks, make_switch_expr_blocks,
	make_bind_expr_blocks, build_tree_cfg): Assign variables and statements
	to scopes.
	(assign_vars_to_scope): New.
	* tree-ssa-copyprop.c (move_var_to_scope): New.
	(copyprop_stmt): Pass scope of statement to propagate_copy.
	(propagate_copy): Assign variable to the right bind_expr.
	(fixup_var_scope): New.
	* tree-ssa-dom.c (optimize_stmt): Pass scope of statement to
	propagate_copy.

2003-08-19  Daniel Berlin <dberlin@dberlin.org>

	* tree-cfg (bsi_move_after): New function.
	(bsi_move_before): New function.
	(bsi_move_to_bb_end): New function.
	* tree-flow.h: Prototype new functions.

2003-08-18  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c: Remove doxygen markers.
	(eq_to_var): remove.
	(simple_cmp): Add.
	(throwaway_global): Add.
	(andersen_same_points_to_set): Handle ignoring global var aliasing the
	right way here.
	(andersen_may_alias): Use list_member to avoid stupid hack.
	* tree-alias-common.c: Remove hacks for disabling global var aliasing.

2003-08-17  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree.c (resize_phi_node): Initialize new entries.

2003-08-17  Jeff Law  <law@redhat.com>

	* tree-pretty-print.c (last_bb): Actually record the basic block,
	not just its index.
	(maybe_init_pretty_print): Corresponding changes.
	(dump_generic_node, dump_vops): Test the actual block pointers, not
	their indices.

	* tree-ssa-dom.c (optimize_block): Use equivalences from the
	dominator tree walk to thread through conditional jumps at leafs in
	the dominator tree.

	* tree-cfg.c (blocks_unreachable_p, remove_blocks): Use a bitmap
	rather than a varray.
	(REMOVE_ALL_STMTS, REMOVE_NO_STMTS): New defines for remove_bb.
	(REMOVE_NON_CONTROL_STMTS, REMOVE_CONTROL_STMTS): Likewise.
	(remove_unreachable_block): Use find_contained_blocks rather
	than find_subblocks.  If we have a COND_EXPR or SWITCH_EXPR which
	is unreachable, but which has reachable children clear out the
	condition and request all non-control statements be removed
	from the block.
	(remove_bb): Allow better control over what (if any) statements
	are removed.  All callers updated.
	(find_subblocks): Remove.
	(find_contained_blocks): Handle statements with no associated
	basic block.

2003-08-15  Andrew Pinski <pinskia@physics.uc.edu>

	* objc/objc-lang.c (LANG_HOOKS_GIMPLIFY_EXPR): Define
	as the c gimplifier.

2003-08-15  Jeff Law  <law@redhat.com>

	* tree-cfg.c (cleanup_tree_cfg): Wipe out the dominator tree
	if the number of basic blocks changes as a result of cfg cleanups.
	* tree-flow.h (build_dominator_tree): Prototype.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Build the dominator
	tree if it is not already available.
	* tree-ssa.c (build_dominator_tree): New function.
	(rewrite_into_ssa): Use it.

	* gimplify.c (gimplify_expr, cases NOP_EXPR, CONVERT_EXPR): If a
	COMPONENT_REF is wrapped with a NOP_EXPR, then force the type of
	the COMPONENT_REF to match the accessed field.  Strip away
	unnecessary type conversions and handle the case where all type
	conversions were removed.
	(case ARRAY_REF, COMPONENT_REF): Indicate to gimplify_array_ref
	and gimplify_component_ref if we want an lvalue or not.
	(gimplify_array_ref, gimplify_component_ref): Pass new argument
	WANT_LVALUE through to gimplify_compound_lval.
	(gimplify_compound_lval): If we do not want an lvalue and the
	toplevel COMPONENT_REF's type does not match its field's type,
	then wrap the COMPONENT_REF in a NOP_EXPR and force the
	COMPONENT_REF's type to match its field's type.
	(gimplify_modify_expr): If the RHS is a CALL_EXPR and the LHS
	is not a gimple temporary, then force the RHS through a gimple
	temporary, even if the call can not throw.
	(create_tmp_var): Make sure not to lose the type's attributes
	for the new variable.
	* tree-ssa.c (tree_ssa_useless_type_conversion): New function.
	* tree-flow.h (tree_ssa_useless_type_conversion): Prototype.
	* tree-ssa-dom.c (optimize_stmt): Use tree_ssa_useless_type_conversion.

	* tree-cfg.c (remove_useless_stmts_and_vars): Catch more
	useless statements created during the out-of-ssa pass.

2003-08-14  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_block): Record equivalences created by
	SWITCH_EXPRs.

	* tree-ssa-dom.c (optimize_stmt): Allow optimizing the RHS of
	a RETURN_EXPR which contains an optimizable MODIFY_EXPR.
	(lookup_avail_expr): Corresponding changes.
	(avail_expr_hash, avail_expr_eq): Likewise.

	* tree-ssa-dom.c (optimize_stmt): Fix typo which prevented
	stores with more than one VDEF from creating useful equivalences.

	* tree-dfa.c (get_expr_operands): Do not special case *0;

	* fold-const.c (fold, case INDIRECT_REF): Revert last change.

2003-08-14  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (bsi_insert_on_edge_immediate): Only update the
	container for the head tree of the next block if the new statement
	needs to be linked to it.

2003-08-13  Jeff Law  <law@redhat.com>

	* fold-const.c (fold, case INDIRECT_REF): Optimize reads from
	constant strings.

	* tree-cfg.c (remove_useless_stmts_and_vars): For a COND_EXPR
	where the condition is a variable and the ELSE clause merely
	sets that variable to zero, remove the ELSE clause.

	* tree-ssa-dom.c (optimize_stmt): Do not check the type of the
	value returned by lookup_avail_expr.

2003-08-13  Daniel Berlin  <dberlin@dberlin.org>

	* tree-cfg.c (remove_stmt):  Add new argument saying whether to remove
	annotations and invalidate defs.  Update all callers
	(remove_bsi_from_block): Moved from bsi_remove, argument added.
	(bsi_remove): Made into wrapper for remove_bsi_from_block.

2003-08-13  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* tree-ssa-dom.c (optimize_stmt): Call get_stmt_operands.

2003-08-12  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Record equivalences created
	by memory stores.

2003-08-12  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (find_insert_location): Handle other control
	statements that may be at the end of the block.

2003-08-12  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (tree-pretty-print.o): Add tree-iterator.h dependency.
	* tree-pretty-print.c: Include tree-iterator.h.
	(dump_generic_node): Avoid recursing into COMPOUND_EXPRs.

2003-08-12  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Optimize ABS_EXPR when we know
	the sign of the source operand.

	* tree-ssa-dom.c (optimize_stmt): Rewrite TRUNC_DIV_EXPR and
	TRUNC_MOD_EXPR even if the LHS is not an SSA variable.  Do not
	enter the new expression in the hash tables if !may_optimize_p.
	Also try GE_EXPR to see if this transformation is safe.

	* tree-ssa-dom.c (optimize_stmt): Fix typo in last change which
	prevented recording equivalences created by IOR_EXPR.

	* tree-ssa-dom.c (optimize_stmt): Record that the destination of
	a MODIFY_EXPR nonzero if the RHS contains an IOR with a nonzero
	constant.  Turn DIV/MOD by a power of 2 into SHIFT/AND if we know
	dividend is positive.

2003-08-11  Jeff Law  <law@redhat.com>

	* fold-const.c (fold, cases NE_EXPR and EQ_EXPR): Fold equality
	comparisons of non-weak symbol addresses against zero.

	* tree-ssa-ccp.c (fold_stmt): Strip unnecessary NOP_EXPRs from
	the folded result.

	* gimplify.c (gimplify_expr, case INDIRECT_REF): Copy the base
	object into a temporary if it's in static memory or is addressable.

2003-08-11  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-alias-common.h (struct tree_alias_ops): Add a semicolon, fix
	bootstrap.

2003-08-10  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (compute_may_aliases): Move points-to initialization from
	here.
	(find_referenced_vars): To here.
	(get_memory_tag_for): Use new same_points_to_set function.

	* tree-alias-common.h (struct tree_alias_ops): Remove doxygen markers.
	Add same_points_to_set function to struct.
	(same_points_to_set): New function.

	* tree-alias-common.c (we_created_global_var): A bit of magic to ignore
	global var aliasing when we didn't create global var.  This will go
	away soon
	(same_points_to_set): New function.

	* tree-alias-andersen.c (struct andersen_alias_ops): Add
	andersen_same_points_to_set.
	(andersen_same_points_to_set): New function. Return true if the two
	variables have the same points-to set.

	* opts.c (common_handle_option): Add "none" as a points-to option.

2003-08-10  Paul Brook  <paul@nowt.org>

	* doc/install.texi: Mention --enable-languages=f95.

2003-08-09  Daniel Berlin  <dberlin@dberlin.org>

	* tree-pretty-print.c (dump_vops): check bb->tree_annotations, not
	bb->aux.

2003-08-08  Daniel Berlin  <dberlin@dberlin.org>

	* tree-cfg.c (bsi_insert_on_edge_immediate): If there's only
	one statement in the block, and it's an empty statement, replace it.

2003-08-08  Jason Merrill  <jason@redhat.com>

	* c-decl.c (c_expand_body_1): Restore support for
	!keep_function_tree_in_gimple_form.
	(finish_function, c_expand_deferred_function): Do TDI_inlined dump.

	* gimplify.c (voidify_wrapper_expr): Set TREE_SIDE_EFFECTS on the
	wrapper if we insert a MODIFY_EXPR.

2003-08-07  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (GTFILES): Add tree-ssa.c, tree-dfa.c and
	tree-ssa-ccp.c.
	(gt-tree-ssa.h, gt-tree-dfa.h, gt-tree-ssa-ccp.h): Depend on
	s-gtype.
	* tree-dfa.c (struct clobber_data_d): Remove.  Update all users.
	(struct alias_map_d): Mark for garbage collection.
	(struct walk_state): Add fields 'is_not_gimple' and
	'is_va_arg_expr'.
	(clobber_vars_r): Remove.  Update all users.
	(get_stmt_operands): Abort if attempting to get operands from a
	non-GIMPLE statement.
	(get_expr_operands): Likewise.
	Do not force a virtual operand when scanning VA_ARG_EXPR.
	(add_stmt_operand): If the variable has hidden uses, mark the
	statement as having volatile operands and return.
	If the variable occurs inside a VA_ARG_EXPR, add it as a virtual
	operand.
	(add_immediate_use): Call VARRAY_TREE_INIT instead of
	VARRAY_GENERIC_PTR_INIT.
	(dump_variable): Check is_in_va_arg_expr flag.
	(compute_may_aliases): Move code to find variables ...
	(find_referenced_vars): ... here.
	(find_vars_r): Abort if we find a non-GIMPLE expression
	unexpectedly.
	Mark variables found inside a VA_ARG_EXPR.
	Do not scan arguments for non-GIMPLE CALL_EXPRs.
	Remove local variable saved_is_store.
	Reformat some code for readability.
	(add_referenced_var): If the variable is already marked as having
	hidden uses, ignore it.
	If the variable is found inside a non-GIMPLE expression, mark it.
	If the variable is found inside a VA_ARG_EXPR, mark it.

	* tree-flow.h (struct var_ann_d): Add field is_in_va_arg_expr.
	(find_referenced_vars): Declare.
	* tree-optimize.c (optimize_function_tree): Call
	find_referenced_vars before computing may aliases.

	* tree-ssa-dce.c (need_to_preserve_store): Do not check if the
	variable has hidden uses.
	* tree-ssa-live.c (type_var_init): Likewise.

	* tree-ssa-ccp.c (ssa_edges): Mark for garbage collection.
	(tree_ssa_ccp): Use VARRAY_.*_EDGE calls to manipulate the varray
	of CFG edges.
	(add_control_edge): Likewise.
	(initialize): Likewise.
	* tree-ssa.c (struct def_blocks_d): Mark for garbage collection.
	(struct var_value_d): Likewise.
	(def_blocks_free): Remove.  Update all users.
	(rewrite_into_ssa): Do not specify free function when creating
	def_blocks and currdefs.
	Call sbitmap_free instead of free.
	(mark_def_sites): Call sbitmap_free instead of free.
	(set_def_block): Use GC allocation.
	(set_livein_block): Likewise.
	(insert_phi_nodes): Adjust name of varray def_maps when creating it.
	(insert_phis_for_deferred_variables): Remove call to BITMAP_XFREE.
	(insert_phi_nodes_for): Use GC allocation for phi_insertion_points.
	(init_tree_ssa): Remove typecast in call to memset.
	(set_value_for): Use GC allocation.
	(get_def_blocks_for): Remove typecast in call to htab_find.
	* varray.c (element): Add entry for struct edge_def *.
	* varray.h (enum varray_data_enum): Add VARRAY_DATA_EDGE.
	(union varray_data_tag): Add field of type struct edge_def *.
	(VARRAY_EDGE_INIT): Define.
	(VARRAY_EDGE): Define.
	(VARRAY_PUSH_EDGE): Define.
	(VARRAY_TOP_EDGE): Define.

2003-08-06  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (handle_switch_fallthru): Do not abort when the last
	statement of the case block needs to be the last statement of the
	block.
	(find_insert_location): Fix typo.

2003-08-06  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-dfa.c (remove_phi_arg):  When the PHI no longer has
	arguments, don't remove it here, but do so...
	(remove_phi_arg_num): ...from here.

2003-08-05  Jason Merrill  <jason@redhat.com>

	* gimplify.c (gimplify_cond_expr): Gimplify shortcut expansion in
	a conditional context.

	* tree-cfg.c (make_catch_expr_blocks): Don't change next_block_link.
	(make_eh_filter_expr_blocks): Likewise.

	* tree-dfa.c (add_referenced_var): Static locals are call
	clobbered.

2003-08-05  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-dfa.c (add_phi_arg): Allow PHI capacity to grow.
	* tree-flow.h  (add_phi_arg): Adjust prototype.
	* tree-ssa-pre.c (code_motion): Adjust call.
	* tree-ssa.c (rewrite_block): Likewise.
	* tree.c (resize_phi_node): New function.
	* tree.h (resize_phi_node): Add prototype.

2003-08-05  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_block): Be more aggressive about
	creating equivalences from PHI nodes.

	* tree-ssa-dom.c (optimize_stmt): Strip away certain NOP_EXPRs
	before determining if we have an equivalence to enter into
	the const_and_copies table.

	* tree-ssa-dce.c (remove_dead_stmts): Iterate backwards through the
	basic blocks removing dead statements.  Within each block iterate
	backwards through the statements removing those which are dead.

	* tree-ssa-optimize.c (optimize_function_tree): Call
	remove_useless_stmts_and_vars before building the flow graph.
	* tree-cfg.c (remove_useless_stmts_and_vars): Rename argument from
	first_iteration to remove_unused_vars.

	* tree-cfg.c (remove_unreachable_blocks): Remove blocks in reverse
	order.
	(remove_bb): Remove unwanted call to bsi_next.
	(bsi_remove): Refine code which removes useless COMPOUND_EXPRs to allow
	removal if one of the arms is not associated with a basic block.
	(remove_stmt): Improve check for testing when a basic block head/end
	pointer needs to be updated when removing a COMPOUND_EXPR.

	* tree-cfg.c (phi_alternatives_equal): New function.
	(linearize_cond_expr): Allow linearization if the PHI nodes at the
	target have equivalent arguments for the incoming edges from the THEN
	and ELSE clauses.

	* tree-ssa-dce.c (mark_tree_necessary): Empty statements may be
	necessary.
	(process_worklist): Handle any incoming abnormal edges the first
	time a statement in each block becomes executable.

	* tree-ssa-ccp.c (substitute_and_fold): Substitute known
	constants into PHI nodes.

2003-08-04  Sebastian Pop  <s.pop@laposte.net>

	* basic-block.h: Declare bb_ann_d.
	(basic_block_def): Add a field tree_annotations.
	* cfg.c (entry_exit_blocks): Initialize tree_annotations to NULL.
	* cfghooks.c: Remove the definition of cfg_level.
	(rtl_register_cfg_hooks): Remove the initiallization of cfg_level.
	* cfghooks.h (cfg_hooks): Add cfgh_loop_optimizer_init, and
	cfgh_loop_optimizer_finalize.
	(loop_optimizer_init, loop_optimizer_finalize): New macros.
	(cfg_level): Remove.
	* cfgloop.h (loop_optimizer_init, loop_optimizer_finalize): Rename
	to rtl_loop_optimizer_init and rtl_loop_optimizer_finalize.
	* cfgrtl.c (rtl_loop_optimizer_init, rtl_loop_optimizer_finalize):
	Declare, and register them in rtl_cfg_hooks and cfg_layout_rtl_cfg_hook.
	* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Rename
	to rtl_loop_optimizer_init and rtl_loop_optimizer_finalize.  Remove
	the checks to cfg_level.
	* tree-cfg.c (block_tree_ann_obstack, first_block_tree_ann_obj): New.
	(create_blocks_annotations, create_block_annotation,
	free_blocks_annotations, clear_blocks_annotations): New functions.
	(tree_loop_optimizer_init, tree_loop_optimizer_finalize): New
	functions.  Register them in tree_cfg_hooks.
	(build_tree_cfg, dump_tree_bb, delete_tree_cfg, tree_split_edge): Use
	create_blocks_annotations instead of alloc_aux_for_blocks,
	create_block_annotation instead of alloc_aux_for_block,
	.tree_annotations instead of .aux,
	free_blocks_annotations instead of free_aux_for_blocks.
	(tree_register_cfg_hooks): Remove initialization of cfg_level.
	* tree-flow-inline.h (bb_ann): Use .tree_annotations.
	* tree-flow.h: Update comment.

2003-08-04  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>

	* Makefile.in (c-pretty-print.o): Add TREE_H and C_TREE_H dependencies.

2003-08-01  Paul Brook  <paul@nowt.org>

	* Makefile.in (GMPINC): Set and use.
	(GMPLIBS): Set it.
	* configure.in: Add test and switches for the GMP library.
	(all_need_gmp): Set from config-lang.in.
	* sourcebuild.texi: Document need_gmp.
	* configure: regen

2003-08-01  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-inline.c (expand_calls_inline): Fix comments.

2003-07-31  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa-ccp.o): Depend on $(EXPR_H).
	* builtins.c (c_strlen): Remove static declaration.
	(simplify_builtin_fputs): Remove static declaration.
	(simplify_builtin_sprintf): New local function.
	(expand_builtin_sprintf): Remove by surrounding with #if 0.
	(expand_builtin): Add BUILT_IN_SPRINTF to the list of built-ins
	handed over to simplify_builtin.
	(validate_arglist): Do not allow arguments with TREE_SIDE_EFFECTS.
	(simplify_builtin_fputs): Add new argument KNOWN_LEN.  If it's set,
	use it instead of trying to compute the length of the string.
	Update all callers.
	* expr.h (simplify_builtin_fputs): Declare.
	* tree-flow.h (fold_stmt): Change argument type to tree *.  Update
	all users.
	* tree-ssa-ccp.c: Include expr.h.
	(replace_uses_in): If the statement makes a call to some selected
	built-ins, mark it for folding.
	(get_strlen): New local function.
	(ccp_fold_builtin): New local function.
	(fold_stmt): Call it.
	(set_rhs): Fix if-else-if chaining.  Handle cases where the whole
	statement needs to be replaced.
	* tree.h (c_strlen): Declare.

2003-07-31  Diego Novillo  <dnovillo@redhat.com>

	Fix PR optimization/11373
	* tree-ssa-dce.c (stmt_useful_p): Get statement operands before
	checking for volatile operands.
	* tree-dfa.c (get_expr_operands): If a constant is dereferenced as a
	pointer, mark the statement as having volatile operands.
	(may_access_global_mem_p): If a non-NULL constant is used as a
	pointer, consider it as pointing to global memory.
	* tree-ssa-dom.c (optimize_stmt): Set addr_expr_propagated_p when
	propagating pointers that are integer constants.

2003-07-31  Andrew MacLeod  <amacleod@redhat.com>

	* tree-dfa.c (add_stmt_operand): Don't treat complex types as scalars.
	* tree-ssa-live.c (var_union):  Change comment.
	(coalesce_tpa_members): Don't proceed if var_union fails.
	* tree-ssa.c (insert_copy_on_edge): Change comment.
	(coalesce_abnormal_edges): Handle var_union failing.
	(coalesce_vars): Skip constant PHI arguments.

2003-07-30  Jeff Law  <law@redhat.com>

	* tree-cfg.c (bsi_remove): Don't remove a COMPOUND_EXPR with empty
	arms if the arms are in different basic blocks.

	* tree-ssa-dom.c (record_cond_is_false): New function.
	(record_cond_is_true): Similarly.
	(get_eq_expr_value): Use record_cond_expr_is_{true,false}.
	(optimize_stmt): Fix minor formatting issue.  If we encounter an
	INDIRECT_REF, record that the dereferenced pointer can not be
	null.

2003-07-30  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dump.c (dump_option_value_in): "all" is now everything but
	TDF_RAW and TDF_SLIM.

2003-07-30  Diego Novillo  <dnovillo@redhat.com>

	* tree-simple.c (is_gimple_const): Accept CONST + CONST expressions
	as GIMPLE constants.

2003-07-30  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c: #include real.h
	(defs_match_p): Change arguments to something normal now that we use
	the new renaming algorithm. Update all callers.
	Use defs_hash_expr.
	(defs_y_dom_x): Ditto.
	(defs_hash_expr): New. Based on iterative_hash_expr.
	(generate_exr_as_of_bb): If there aren't any uses, return.
	(subst_phis): Call modify_stmt on the actually modified statement. :)
	(get_default_def): Only walk SSA_NAME arguments in PHI's.

2003-07-30  Jason Merrill  <jason@redhat.com>

	Don't modify code that is already GIMPLE.
	* gimplify.c (gimplify_expr): Don't return early if the predicate
	matches.
	Use a variable temp if the caller wants an lvalue.
	Don't call gimplify_constructor if we're on the rhs of a MODIFY_EXPR.
	(add_tree, add_stmt_to_compound): Do add an empty stmt if we
	previously had nothing at all.
	(gimplify_return_expr): Don't mess with iterators if it was already
	gimple.
	(gimplify_cond_expr): Remove a COND_EXPR with two empty arms.
	(gimplify_call_expr): Try to simplify a builtin again after
	gimplifying the args.
	(internal_get_tmp_var): Gimplify the new MODIFY_EXPR.
	(gimplify_expr, gimple_push_cleanup): Use boolean_false_node.
	(gimplify_init_constructor): New fn, broken out from...
	(gimplify_modify_expr): ...here.  Be smarter about zero-initialization.
	* tree-simple.c (is_gimple_rhs): Accept any CONSTRUCTOR.
	* tree-simple.h: Adjust add_tree prototype.

2003-07-29  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c (create_alias_vars):  If we created global_var,
	delete it when we are done.
	(ptr_may_alias_var): Handle case that global_var is now NULL_TREE.

2003-07-29  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Propagate copies into VUSEs and
	the RHS of VDEFs.

2003-07-29  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa.c (insert_copy_on_edge): Only set used bit on DECL nodes.

2003-07-29  Andrew MacLeod  <amacleod@redhat.com>

	* common.opt (ftree-combine-temps): Add new option.
	* flags.h (flag_tree_combine_temps): New flag.
	* opts.c (decode_options): Initialize flag_tree_combine_temps.
	(common_handle_option): Handle new flag.
	* toplev.c (flag_tree_combine_temps): Declare.
	(lang_independent_options f): Add tree-combine-temp.
	* tree-ssa-live.c (var_union): When combining 2 root variables, choose
	the user variable over a temporary as the new variable.
	(compact_var_map): Use renamed root_var routines.
	(calculate_live_on_exit): Reformatting.
	(tpa_init): Initialize a tpa object.
	(tpa_remove_partition): Remove a partition from a tpa list.
	(tpa_delete): Delete a tpa object.
	(tpa_compact): Hide single elemenet lists.
	(root_var_init): Split common part into tpa_init and rename.
	(remove_root_var_partition, delete_root_va, dump_root_var): Delete.
	(type_var_init): New. Initialize a type_var object.
	(create_coalesce_list): New. Create a coalesce_list object.
	(delete_coalesce_list): New. Free a coalesce list's memory.
	(find_partition_pair): New. Find a coalesce pair in a coalesce list.
	(add_coalesce): New. Add a coalesce between 2 partitions.
	(sort_coalesce_list): New. Sort coalesce pairs by importance.
	(pop_best_coalesce): New. Get best remaining pair to coalesce.
	(add_conflicts_if_valid): Move from tree-ssa.c.
	(build_tree_conflict_graph): Move from coalesce_ssa_name in tree-ssa.c.
	Genericize to use tpa_p instead of root_var object. Don't add
	interferences between copies. Update coalesce list.
	(coalesce_tpa_members): Move from coalesce_ssa_name in tree-ssa.c. Use
	tpa_p instead of root_var. Use coalesce list if provided.
	(dump_coalesce_list): New. Show debug info for a coalesce list.
	(tpa_dump): Rename from dump_root_var and genericize to use tpa_p.
	* tree-ssa-live.h (root_var_p): Rename structure type to tpa_p
	(tpa_num_trees, tpa_tree, tpa_first_partition, tpa_next_partition,
	tpa_find_tree): New. Generic versions of existing root_var routines.
	(tpa_decompact): New. Include single version lists.
	(root_var_p): Declare as type tpa_p.
	(root_var_num, root_var, root_var_first_partition,
	root_var_next_partition, root_var_dump, root_var_delete,
	root_var_remove_partition, root_var_find , root_var_compac,
	root_var_decompac): Rename and call generic versions.
	(type_var_p): New. Use tpa_p structure for a type based association.
	(type_var_num, type_var, type_var_first_partition,
	type_var_next_partition, type_var_dump, type_var_delete,
	type_var_remove_partition, type_var_find, type_var_compact,
	type_var_decompact): New. Call generic versions of the routine.
	(struct partition_pair_d): New. Represent a desired coalesce.
	(struct coalesce_list_d): New. Organize lists of desired coalesces.
	(NO_BEST_COALESCE): Define value.
	* tree-ssa.c (set_if_valid): Remove.
	(insert_copy_on_edge): Set variable as used when inserting a copy.
	(add_conflicts_if_valid): Remove. Move to tree-ssa-live.c.
	(print_exprs): New. Routine for commonly used output format.
	(coalesce_abnormal_edges): New. Split from coalece_ssa_name. Force
	partition coalesces across abnormal edges.
	(coalesce_ssa_name): Split out build_tree_conflict_graph,
	coalesce_abnormal_edges, and coalesce_tpa_members. Return live
	range info if required. Use renamed root_var routines.
	(assign_vars): Use renamed root_var routines.
	(replace_variable): Mark as inline.
	(coalesce_vars): Coalesce variable memory storage.
	(rewrite_out_of_ssa): Don't compact varmap anymore. Free live range
	info if required. Call coalesce_vars if combining temps.

2003-07-29  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (handle_switch_fallthru): Use bsi_link_after if stmt is
	in a basic block.

2003-07-28  Diego Novillo  <dnovillo@redhat.com>

	* opts.c (decode_options): Disable must-alias optimization.

2003-07-28  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa.c (struct _elim_graph): Add varray for constant copies.
	(new_elim_graph): Initialize constant copy array..
	(eliminate_build): Push constant copies onto stack instead of emitting.
	(eliminate_phi): Emit any pending constant copies.

2003-07-28  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_block): If a PHI has a single argument
	that is a constant, then that creates a useful equivalence.
	Propagate constant values into PHI nodes.

	* tree-flow-inline.h (may_propagate_copy): Allow RHS to be a
	constant.

	* tree-dfa.c (compute_immediate_uses_for): Do not assume that
	PHI arguments are SSA_NAMEs.
	* tree-ssa-dce.c (process_worklist): Likewise.
	* tree-ssa-copyprop.c (copyprop_phi): Likewise.  Use may_propagate_copy.
	* tree-ssa-ccp.c (visit_phi_node): Do not assume that PHI arguments
	are SSA_NAMEs.  Create a suitable value if a PHI argument is a
	constant.

	* tree-cfg.c (move_outgoing_edges): Correctly handle case where
	an edge already exists from BB1 to BB2's successor.

2003-07-27  Daniel Berlin  <dberlin@dberlin.org>

	* tree.h (EREF_TEMP): Rename to EPHI_TEMP.
	(tree_eref_common): Move temp to tree_ephi_node.
	* tree-ssa-pre.c: Remove #if 0'd code.
	Use EPHI_TEMP rather than EREF_TEMP, remove EREF_TEMP on EUSE nodes.
    (finalize_1): Handle empty blocks properly.

2003-07-27  Andreas Jaeger  <aj@suse.de>

	* tree.c: Convert remaining K&R prototypes to ISO C90.
	* tree-dump.c: Likewise.
	* tree-inline.c: Likewise.
	* stmt.c (expand_asm_expr): Likewise.

	* diagnostic.h: Remove PARAMS.

2003-07-26  Paul Brook  <paul@nowt.org>

	* Makefile.in: Rename check-g95 to check-gfortran.
	* gcc.c (default_compilers): Add entries for .f90 and .f95.
	* doc/frontends.texi: Document new F95 front end.
	* doc/install.texi: Ditto.
	* doc/invoke.texi: Ditto.
	* doc/sourcebuild.texi: Ditto.
	* fortran: New front end.

2003-07-25  Jeff law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_block): Use may_propagate_copy.

2003-07-25  Diego Novillo  <dnovillo@redhat.com>

	* opts.c (decode_options): Re-enable must-alias optimizations.

2003-07-25  Daniel Berlin  <dberlin@dberlin.org>

	* configure.in:  Update BANSHEEREBUILD for PWD change.
	* configure: regen

2003-07-25  Andreas Jaeger  <aj@suse.de>

	* c-call-graph.c: Convert to ISO C90.
	* c-common.c: Likewise.
	* c-mudflap.c: Likewise.
	* c-pretty-print.c: Likewise.
	* cfganal.c (find_edge): Likewise.
	* dependence.c: Likewise.
	* diagnostic.c (debug_output_buffer): Likewise.
	* except.c (expand_eh_handler): Likewise.
	* fold-const.c: Likewise.
	* langhooks.c: Likewise.
	* tree-cfg.c (last_exec_block): Likewise.
	* tree-ssa-pre.c: Likewise.
	* builtins.c: Likewise.

	* tree.h: Remove remaining PARAMS.
	* c-common.h: Likewise.
	* c-pretty-print.h: Likewise
	* c-tree.h: Likewise.
	* except.h: Likewise.
	* langhooks-def.h: Likewise.
	* langhooks.h: Likewise.

2003-07-24  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (cleanup_operand_arrays): New local function.  Remove
	superfluous VUSE operands.
	(get_stmt_operands): Call it.

2003-07-24  Jason Merrill  <jason@redhat.com>

	* gimplify.c (gimple_boolify): New fn.
	(gimplify_expr) <TRUTH_NOT_EXPR>: Boolify arg.
	(gimplify_cond_expr): Boolify condition.
	(gimplify_boolean_expr): Boolify args.
	(gimple_push_cleanup): Make flag boolean.

	* tree-simple.c (is_gimple_relop): TRUTH_{AND,OR,XOR}_EXPR
	are not comparisons.
	(is_gimple_binary_expr): They are binary ops.

	* tree-mudflap.c (mf_build_check_statement_for): Use TRUTH_OR_EXPR
	rather than BIT_IOR_EXPR.

2003-07-23  Jason Merrill  <jason@redhat.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* c-common.h (DECL_C_HARD_REGISTER): Replace ...
	* tree.h (DECL_HARD_REGISTER): ... with this.  Update all users.

2003-07-23  Diego Novillo  <dnovillo@redhat.com>

	* tree-flow-inline.h (may_propagate_copy): New function.
	* tree-flow.h (may_propagate_copy): Declare.
	* tree-ssa-copyprop.c (copyprop_stmt): Call it.
	(get_original): Likewise.
	* tree-ssa-dom.c (optimize_stmt): Likewise.

2003-07-23  Frank Ch. Eigler  <fche@redhat.com>

	* gcc.c (MFWRAP_SPEC): Also wrap pthread_join and pthread_exit.

2003-07-23  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-flow-inline.h (remove_dom_child): New function.
	(clear_dom_children): New function.
	* tree-cfg.c (bsi_insert_on_edge_immediate): Do not clear
	the annotation for the new bb, it is already memset to zero
	in alloc_aux_for_block().
	(move_outgoing_edges): Use dom_children() instead of looking
	at the dom_children field in the basic block annotation.
	* tree-ssa.c (rewrite_into_ssa): Use clear_dom_children().

	* tree-cfg.c (dump_tree_cfg): Dump to `file', not `dump_file'.

2003-07-23  Diego Novillo  <dnovillo@redhat.com>

	* tree.h (DECL_ESTIMATED_INSNS): Move from c-common.h.

2003-07-23  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Make
	found_unreachable a bool.  Create/delete hash tables for
	copies and available exprs outside the main loop.  Use
	htab_clean to wipe them after each iteration.

2003-07-22  Diego Novillo  <dnovillo@redhat.com>

	* opts.c (decode_options): Add temporary test for environment
	variable TREE_SSA_DO_PRE.
	Do not disable dominator optimizations when PRE is enabled.

2003-07-22  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (finalize_1): Change to not use bsi_last.

2003-07-22  Daniel Berlin  <dberlin@dberlin.org>

	* tree-cfg.c (remove_stmt): Revert 07-15 change. Turns out the bug is in
	the reverse iterator.

2003-07-22  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (visit_phi_node): Assume default value of CONSTANT
	if the PHI value was already constant.

2003-07-22  Andrew MacLeod  <amacleod@redhat.com>

	* c-pretty-print.c (print_call_name): Handle COND_EXPR correctly.
	* tree-pretty-print.c (print_call_name): Handle COND_EXPR correctly and
	handle SSA_NAME.
	* tree-dfa.c (add_phi_arg, remove_phi_arg_num): Remove references to
	SSA_NAME_HAS_REAL_REFS.
	* tree-ssa-ccp.c (visit_phi_node): Remove SSA_NAME_HAS_REAL_REFS.
	* tree-ssa-copyprop.c (copyprop_phi): Remove SSA_NAME_HAS_REAL_REFS.
	* tree-ssa-live.c (register_ssa_partition): Register the PHI and it's
	arguments if this variable is defined by a PHI.
	(create_ssa_var_map): Only register real uses and defs, and virtual
	operands of ASM_EXPR's. Remove SSA_NAME_HAS_REAL_REFS. Don't set
	used flag on variables here.
	(calculate_live_on_entry): Ignore constants in PHI arguments.
	(calculate_live_on_exit): Ignore constants in PHI arguments.
	(dump_live_info): New. Dump live range information.
	* tree-ssa-live.h (dump_live_info): New prototype and flags.
	* tree-ssa-pre.c (create_expr_ref, finalize_1, repair_use_injury,
	code_motion): Remove SSA_NAME_HAS_REAL_REFS.
	* tree-ssa.c (rewrite_operand, register_new_def): Remove real_ref
	parameter and SSA_NAME_HAS_REAL_REFS.
	(rewrite_block): Remove real_ref parameter from register_new_def call.
	(eliminate_build): Remove SSA_NAME_HAS_REAL_REFS. Insert copy if PHI
	argument is a constant. Handle irregular PHI argument ordering.
	(elim_create): Remove dead code to count PHI nodes.
	(assign_vars): Set used flag on variables when assigned.
	(replace_variable): Eliminate dead code.
	(coalesce_ssa_name): Remove SSA_NAME_HAS_REAL_REFS. Print error for
	constant argument across an abnormal edge.
	(eliminate_extraneous_phis): New. Remove PHI nodes which are not in
	the partition.
	(rewrite_out_of_ssa): Call eliminate_extraneous_phis.
	(rewrite_stmt): Remove real_ref parameter from rewrite_operand and
	register_new_def.
	* tree.h (SSA_NAME_HAS_REAL_REFS): Remove.
	(struct tree_ssa_name): Remove 'has_real_refs' field.

2003-07-22  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (factor_through_injuries): Take new argument specifying
	whether use was injured or not (needed for SR).   Update all callers.
	(maybe_find_rhs_use_for_var): Take new argument specifying which
	operand to start search with.   Update all callers.
	(phi_opnd_from_res): #if 0 out.
	(rename_2): Ditto.
	(rename_1): Ditto.
	(defs_match_p): Take new arguments specifying which defs were injured.
	Update all callers.
	(defs_y_dom_x): Ditto.
	(generate_expr_as_of_bb): Fix small memory overwrite.
	(process_delayed_rename): Propagate injured flag around.
	(new_rename_1): Ditto.
	(finalize_1): Get correct variable names for newly created statement if
	necessary due to PHI.
	(repair_use_injury): Note the repair in the stats. Insert repair
	in right place.
	(repair_euse_injury): Fix handling of PHI_NODE.
	(code_motion): Fix algorithm so it can handle using reaching_def all the
	time (needed for SR).
	Use reaching_def rather than EREF_TEMP.

2003-07-21  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (get_stmt_operands): Remove FIXME note
	regarding virtual operands for ASM_EXPRs.

2003-07-21  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_def): Renamed from set_def.  Update all users.
	(get_stmt_operands): Don't force ASM_EXPR operands to be virtual.
	(add_stmt_operand): Allow non-assignments to create new defs.
	* tree-dump.c (dump_function): Move header dump...
	(dump_function_to_file): ... here.
	* tree-flow-inline.h (def_ops): Renamed from def_op.  Return a
	varray with all the definitions made by the statement.
	Update all users.
	* tree-flow.h (struct operands_d): Rename field 'def_op' to
	'def_ops'.  Convert it into a varray.
	* tree-must-alias.c (tree_compute_must_alias): Call
	dump_function_to_file instead of dump_function.
	* tree-ssa-ccp.c (tree_ssa_ccp): Likewise.
	(visit_stmt): Only visit statements that make new definitions using
	MODIFY_EXPR.
	Definitions coming from other statements are considered VARYING.
	* tree-ssa-copyprop.c (tree_ssa_copyprop): Call
	dump_function_to_file instead of dump_function.
	* tree-ssa-dce.c (tree_ssa_dce): Likewise.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Likewise.
	(optimize_stmt): Don't abort if a statement makes more than one
	definition.
	Check for MODIFY_EXPR statements directly, instead of relying on
	the presence of a single definition.
	* tree-ssa-pre.c (tree_perform_ssapre): Call dump_function_to_file
	instead of dump_function.
	* tree-ssa.c (rewrite_into_ssa): Likewise.
	Dump the function before dominator optimizations if TDF_DETAILS is
	set.
	(rewrite_stmt): Don't abort if the statement makes more than one
	definition.

2003-07-21  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (tree_ssa_dominator_optimize): If we made any
	blocks unreachable, repeat the dominator optimizations.
	(optimize_block): Enter PHIs with a single source argument into
	the const_and_copies table.  When propagating into a PHI node,
	break the loop over the PHI arguments when a propagation is performed.
	If the PHI agument is not an SSA_VAR, then no propagation is possible.
	(optimize_stmt): If an operand is not an SSA_VAR, then no propagation
	is possible/needed.

2003-07-21  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa-dom.o): Add dependency on $(TREE_DUMP_H).
	* fold-const.c (fold): Remove unusued local variable 'invert'.
	* tree-dump.c (dump_files): Add entry for -fdump-tree-dom.
	* tree-flow.h (tree_ssa_dominator_optimize): Change declaration to
	accept a function decl.
	* tree-ssa-dom.c: Include timevar.h and tree-dump.h.
	(tree_ssa_dominator_optimize): Change to receive the function decl
	for the function to optimize.  Update callers.
	Use own dump file instead of dumping on the .ssa dump file.
	Dump function at the end.
	Push and pop TV_TREE_SSA_DOMINATOR_OPTS.
	* tree-ssa.c (rewrite_into_ssa): Restore check for number of times
	that the rename loop has been executed.  Abort if the loop executes
	more than twice.
	* tree.h (enum tree_dump_index): Add TDI_dom.
	* doc/invoke.texi: Document -fdump-tree-dom.

2003-07-21  Steven Bosscher  <steven@gcc.gnu.org>
	    Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (install-po): Check if $CATALOGS is empty to avoid
	buggy shells.
	* basic-block.h (rtl_verify_flow_info): Remove.
	(tree_verify_flow_info): Remove.
	(verify_flow_info): Declare.
	* builtins.c: Rearrange to simplify merges.  Add #if 0 around
	expand_ functions that are not used in the branch and move new code
	to the end of the file.
	* c-opts.c (c_common_handle_option): Move handling of -fdump- to
	opts.c.
	* cfgloopmanip.c (loop_split_edge_with_NULL): Remove.  Update all
	users.
	* common.opt: Add all the tree-ssa switches.
	* opts.c: Handle them.
	* flags.h (flag_tree_cp): Remove unused variable.
	(enum pta_type): Move from tree-must-alias.h
	(flag_tree_points_to): Likewise.
	* toplev.c (flag_tree_cp): Remove unused variable.
	* tree-cfg.c: Move cfg_hooks structures and functions for
	trees from cfghooks.c.
	* tree-mudflap.c (mudflap_enqueue_decl): Don't use %D to
	avoid warning about format specifiers.

2003-07-21  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (gimplify_function_tree): Move gimplification of the
	function body ...
	(gimplify_body): ... here.
	* tree-simple.h (gimplify_body): Declare.
	* tree-inline.c (initialize_inlined_parameters): If the
	emitted assignment is not in GIMPLE form, gimplify the
	body of assignments emitted.

2003-07-17  Jeff Law  <law@redhat.com>

	* tree-dfa.c (remove_phi_arg): Update PHI_ARG_CAPACITY.

	* tree-ssa.c (mark_def_sites): Do not build the dominator tree here.
	(rewrite_into_ssa): Do not depend on mark_def_sites to build the
	dominator tree.   Move computation of dominance frontiers out
	of main loop (even though it was only done once).  Free immediate
	dominator information as soon as we're done with it.

	* tree-flow.h (remove_phi_nodes_and_edges_for_unreachable_block):
	Prototype.
	* tree-cfg.c (remove_phi_nodes_and_edges_for_unreachable_block): New
	function extracted from remove_bb.
	(remove_bb): Call remove_phi_nodes_and_edges_for_unreachable_block.

	* tree-ssa-dom.c (optimize_block): Propagate values into PHI nodes.
	Do not optimize a block which has become unreachable.
	If a COND_EXPR has a compile-time constant condition, then remove
	outgoing from the COND_EXPR which can not execute.

2003-07-16  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mx_xfn_indirect_ref): Correct source locations
	for tracked expressions by ignoring incidental decl source loci.

2003-07-16  Jeff Law  <law@redhat.com>

	* tree-cfg.c (remove_bb): Remove statements in reverse order.
	Simplify code to issue warnings for unreachable code.

	* tree-ssa-dom.c (get_eq_expr_value): Also enter expressions
	into the available expression hash table.  Callers changed to
	pass in the block_avail_exprs varray and const_and_copies hash
	table.
	(optimize_stmt): Allow optimization of the condition in
	a COND_EXPR statement.
	(lookup_avail_expr): For COND_EXPRs, just see if their condition
	has been recorded into the hash table, do not enter them into
	the hash table.  Only do a lookup of the result in the
	const_and_copies table if it is an SSA_VAR.
	(avail_expr_hash): Handle COND_EXPRs, specifically we only care
	about their condition and virtual operands.
	(avail_expr_eq): Likewise.  If one statement has virtual operands
	and the other does not, then the expressions are not equal.

	* tree-ssa.c (rewrite_into_ssa): If we have done dominator
	optimizations, then call cleanup_tree_cfg after rewriting is
	complete.
	* tree-ssa-dom.c (optimize_block): Get eq_expr_value for the
	current block rather than having it passed in by the caller.
	Propagate eq_expr_value into the false arm of a COND_EXPR.
	(get_eq_expr_value): Return equivalences for the false
	arm of a COND_EXPR if requested.

2003-07-16  Daniel Berlin  <dberlin@dberlin.org>

	* c-decl.c (store_parm_decls): Also strip NON_LVALUE_EXPRs and
	CONVERT_EXPRs when setting DECL_NONLOCAL.

2003-07-15  Daniel Berlin  <dberlin@dberlin.org>

	* tree-cfg.c (remove_stmt): Update bb->end_tree_p properly when
	stmt_p is the end of the bb.

2003-07-15  Jeff Law  <law@redhat.com>

	* tree-ssa-dom.c (optimize_stmt): Consider two types equivalent if
	their TYPE_MAIN_VARIANT is equivalent.
	(avail_expr_eq): Likewise.

	* Makefile.in (OBJS): Add tree-ssa-dom.o
	(tree-ssa-dom.o): Add dependencies.
	(ssa.o, cfghooks.o): Use $(TREE_FLOW_H), not tree-flow.h.
	* timevar.def: Add new timevar for dominator optimizer.  Reorder
	slightly.
	* tree-dfa.c (add_stmt_operand): Do not consider references to
	static storage as volatile operands.
	(add_referenced_var): Static storage items reference global memory.
	* tree-ssa.c: Simplify by moving everything specific to the
	dominator optimizer into tree-ssa-dom.c.  Call into the dominator
	optimizer after rewriting all the basic blocks.
	* tree-ssa-dom.c: New file.  Mostly extracted from tree-ssa.c
	* tree-flow.h (tree_ssa_dominator_optimize): Prototype.
	(dump_dominator_optimization_stats): Likewise.
	(debug_dominator_optimization_stats): Likewise.

2003-07-15  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_stmt_operand): Move volatile handling...
	(find_vars_r): ... here.
	Mark when the walker is inside an ASM_EXPR.
	(struct walk_state): Add field 'is_asm_expr'.
	Change flag fields to bitfields.
	(add_referenced_var): If the variable is a pointer being stored by
	an ASM_EXPR, mark it as a global memory pointer.
	* tree-flow-inline.h (is_optimizable_addr_expr): New function.
	* tree-flow.h (is_optimizable_addr_expr): Declare it.
	* tree-ssa.c (rewrite_and_optimize_stmt): Use it.
	(lookup_avail_expr): Likewise.
	(get_eq_expr_value): Likewise.
	(avail_expr_eq): Return 'true' when comparing a statement against
	itself.
	* tree-ssa-dce.c (need_to_preserve_store): Move volatile checking...
	(stmt_useful_p): ...here.

2003-07-15  Andreas Jaeger  <aj@suse.de>

	* c-simplify.c: Convert prototypes to ISO C90.
	* gimplify.c: Likewise.
	* simple-break-elim.c: Likewise.
	* simple-goto-elim.c: Likewise.

	* tree-alias-ander.c: Convert prototypes to ISO C90.
	* tree-alias-common.c: Likewise.
	* tree-alias-type.c: Likewise.
	* tree-browser.c: Likewise.
	* tree-dchain.c: Likewise.
	* tree-mudflap.c: Likewise.
	* tree-nomudflap.c: Likewise.
	* tree-optimize.c: Likewise.
	* tree-pretty-print.c: Likewise.
	* tree-simple.c: Likewise.

	* tree-alias-common.h: Convert prototypes to ISO C90, remove extra
	whitespace.
	* tree-alias-type.h: Convert prototypes to ISO C90.
	* tree-dchain.h: Likewise.
	* tree-flow-inline.h: Likewise.
	* tree-flow.h: Likewise.
	* tree-iterator.h: Likewise.
	* tree-mudflap.h: Likewise.
	* tree-simple.h: Likewise.

2003-07-14  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (tree_perform_ssapre): Fix dom_children after DCE
	breaks them.

2003-07-14  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_vdef): Initialize variable 'vdef'.
	(add_vuse): Initialize variable 'vuse'.

2003-07-14  Diego Novillo  <dnovillo@redhat.com>

	Must alias analysis.  Allow the SSA rename pass to be done on a set
	of variables.

	* Makefile.in (OBJS): Add tree-must-alias.o.
	* flags.h (flag_tree_must_alias): Declare.
	* timevar.def (TV_TREE_MUST_ALIAS): Define.
	* toplev.c (flag_tree_must_alias): Declare.
	(f_options): Add entry for -ftree-must-alias.
	(parse_options_and_default_flags): Enable must-alias analysis at -O1.

	* tree-cfg.c (remove_useless_stmts_and_vars): Do not remove
	addressable variables.

	* tree-dfa.c (dump_file, dump_flags): New local variables to
	replace tree_ssa_dump_file and tree_ssa_dump_flags.  Update every
	user.
	(get_stmt_operands): Clear the array of virtual operands before
	scanning the statement.
	(get_expr_operands): Do not add an operand for ADDR_EXPR if the
	expression takes the address of a VAR_DECL or a PARM_DECL.  Instead
	add the variable to the list of variables whose address has been
	taken by the statement.
	Allow INDIRECT_REF expressions of the form *&VAR.  Convert them
	into an operand for VAR.
	When processing function calls, add a VUSE for .GLOBAL_VAR if the
	function is pure but not const.
	(add_stmt_operand): If the operand is an ADDR_EXPR, add the
	variable to the list of variables whose address has been taken by
	the statement.
	(add_vdef): If the statement had virtual definitions, try to find
	an existing VDEF for the variable, to preserve SSA information.  If
	none is found, create a new one.
	(add_vuse): Likewise.
	(remove_all_phi_nodes_for): New function.
	(get_call_flags): New function to replace call_may_clobber.  Update
	all callers.

	* tree-dump.c (dump_files): Add entry for -fdump-tree-mustalias.
	* tree-flow-inline.h (addresses_taken): New function.
	(is_unchanging_value): New function.

	* tree-flow.h (addresses_taken): Declare.
	(remove_all_phi_nodes): Declare.
	(init_tree_ssa): Declare.
	(propagate_copy): Declare.
	(is_unchanging_value): Declare.
	(tree_compute_must_alias): Declare.

	* tree-inline.c (copy_body_r): Fold instances of *&VAR.

	* tree-must-alias.c: New file.

	* tree-optimize.c (optimize_function_tree): Call init_tree_ssa and
	compute_may_aliases before calling rewrite_into_ssa.
	After the SSA pass, run dead code elimination and compute
	must-aliases.

	* tree-simple.c (is_gimple_call_expr): Add comment that
	is_gimple_* predicates should not have side effects.

	* tree-ssa-ccp.c: Replace calls to really_constant_p with
	is_unchanging_value everywhere.
	(fold_stmt): Don't fold if the RHS is already a constant.

	* tree-ssa-copyprop.c (copyprop_stmt): Remove unnecessary
	variable 'vuse'.
	Call propagate_copy to replace the operand with its new value.
	(copyprop_phi): Remove unnecessary variable 'vuse'.
	(get_original): Remove unused parameter 'vuse_p'.
	(propagate_copy): New function.

	* tree-ssa-dce.c (need_to_preserve_store): Update comments.

	* tree-ssa.c (dump_file, dump_flags): New local variables to
	replace globals tree_ssa_dump_file and tree_ssa_dump_flags.  Update
	all users.
	(addr_expr_propagated_p): New local variable.
	(vars_to_rename): New local variable.
	(check_for_new_variables): New local function.
	(rewrite_into_ssa): Add new argument VARS which is a bitmap
	representing all the variables that should be renamed into SSA.  If
	VARS is NULL, all the variables in the program are renamed.
	Don't call init_tree_ssa nor compute_may_aliases.
	Initialize all the local hash tables and bitmaps.
	Add support for repeating the SSA rename process more than once.
	If the dominator optimizations produced new symbols, repeat the
	process.
	(mark_def_sites): Ignore operands that are in SSA form already.
	(insert_phi_nodes): Only add PHI nodes for variables in the
	VARS_TO_RENAME bitmap.
	(rewrite_block): Ignore PHI nodes that have been renamed already.
	(rewrite_and_optimize_stmt): Ignore operands that are already in
	SSA form.
	When propagating ADDR_EXPR set addr_expr_propagated_p to 'true'.
	Call propagate_copy when doing copy propagation.
	Call is_unchanging_value to decide if the RHS of an assignment is a
	constant.
	(rewrite_stmt): Ignore operands that are already in SSA form.
	(init_tree_ssa): Make external.
	Move initialization of local hash tables and bitmaps to
	rewrite_into_ssa.
	(remove_annotations_r): Don't special case MODIFY_EXPR nodes.
	(lookup_avail_expr): Call is_unchanging_value.
	(get_eq_expr_value): Likewise.

	* tree.h (enum tree_dump_index): Add TDI_must_alias.

	* cp/optimize.c (optimize_function): Don't call the tree optimizers
	  if -fdisable-tree-ssa is given.

	* doc/invoke.texi: Add documentation for -ftree-must-alias.

2003-07-07  Jeff Law  <law@redhat.com>

	* fold-const.c (nondestructive_fold_unary_to_constant: For BIT_NOT_EXPR
	make sure OP0 is a suitable constant before trying to fold it.

	* tree-cfg.c (handle_switch_fallthru): Set DECL_CONTEXT for
	newly created labels.

	* tree-cfg.c (move_outgoing_edges): New function.
	(merge_tree_blocks): Use it.
	(remove_bb): Remove the block from the pdom_info structures
	as well if they exist.
	(linearize_cond_expr): Move important edges from the then and
	else arms to BB as appropriately

	* tree-cfg.c (remove_stmt): When removing a COMPOUND_EXPR, make
	sure that any basic block pointers to the arms of the COMPOUND_EXPR
	are updated.

	* tree-cfg.c (make_goto_expr_edges): Computed gotos create
	abnormal edges.

2003-07-05  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (defs_match_p): Check for copies of the same version.

2003-07-03  Frank Ch. Eigler  <fche@redhat.com>

	* tree-nomudflap.c (mf_marked_p, mf_mark): New dummy functions.

2003-07-03  Jeff Law  <law@redhat.com>

	* tree-ssa.c (lookup_avail_expr): Accept new argument containing the
	const_and_copies table.  All callers changed.  If we find the
	given expression in the availe expression hash table, then lookup
	the LHS of the hash table's entry in the const_and_copies_table.
	Do record type casts into the available expression table.

	* tree-nomudflap.c (mf_marked_p): Mark arguments as being unused.
	(mf_mark): Likewise.

	* c-decl.c (store_parm_decls): Strip away NOP_EXPRs when looking
	for hidden use variables.

2003-07-02  Frank Ch. Eigler  <fche@redhat.com>

	* varasm.c (build_constant_desc): Propagate mudflap marked-ness
	across constant copying.

2003-07-02  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (tree_perform_ssapre): Don't optimize things with
	volatile ops or making aliased loads right now.
	(create_expr_ref): Mark the phi result of the new phi as having
	real refs.
	(finalize_1): Mark the new temp as having real refs.
	(repair_use_injury): Ditto.
	(code_motion): Ditto.

2003-07-01  Daniel Berlin  <dberlin@dberlin.org>

	* tree.h (struct tree_eref_common): Add injured flag.
	Add EREF_INJURED macro.

2003-07-01  Daniel Berlin  <dberlin@dberlin.org>

	* tree-flow-inline.h (stmt_ann): We have stmt_ann on E*_NODE's as well,
	so use is_essa_node as well.
	* tree-dfa.c (create_stmt_ann): Ditto.
	* tree.h (is_essa_node): Declare.
	* tree.c (is_essa_node): Define.

2003-07-01  Jason Merrill  <jason@redhat.com>

	* tree-cfg.c (prepend_stmt_to_bb): New fn.
	(bsi_insert_after): Add to the beginning of an empty block.

2003-07-01  Jeff Law  <law@redhat.com>

	* expr.c (expand_expr, case COND_EXPR): Correctly (?) handle
	cases where a containing block has a stack level.  Handle
	cases where one arm is a GOTO_EXPR and the other arm has
	side effects.

	* stmt.c (containing_blocks_have_cleanups_or_stack_level): New
	function.
	(any_pending_cleanups): Further simplification.
	* tree.h (containing_blocks_have_cleanups_or_stack_level): Prototype.

2003-06-30  Diego Novillo  <dnovillo@redhat.com>

	* tree-flow.h (struct tree_ann_common_d): Remove 'stmt' field.
	Update all users.
	(struct var_ann_d): Remove field 'has_real_refs'.  Update all callers
	with calls to SSA_NAME_HAS_REAL_REFS.
	Remove field 'occurs_in_abnormal_phi'.  Update all callers with
	calls to SSA_NAME_OCCURS_IN_ABNORMAL_PHI.
	* tree-flow-inline.h (var_ann): Only accept _DECL nodes.
	(stmt_ann): Only accept GIMPLE statements.
	(tree_stmt): Remove.  Update all users.

	* tree-cfg.c (linearize_cond_expr): Handle cases where BB doesn't
	have a postdominator.
	(find_contained_blocks): Do not look inside COND_EXPR_COND nor
	SWITCH_COND expressions.

	* tree-dfa.c (get_stmt_operands): Force virtual operands on
	ASM_EXPRs.
	(get_expr_operands): Handle SSA names when adding operands for
	memory tags.
	(add_stmt_operand): Handle SSA names.
	Move checks for volatile operands earlier in the code.
	(add_vdef): Re-format for readability.
	(create_var_ann): Only allow _DECL nodes.
	(create_stmt_ann): Only allow GIMPLE statements.
	(dump_variable): Handle SSA names.
	(dump_may_aliases_for): Likewise.
	(may_access_global_mem_p): Handle SSA names.
	(remove_phi_arg): If the argument removed was the last one with
	real references, update the LHS of the PHI node.
	(add_phi_arg): If the argument added has real references, propagate
	the attribute into the LHS of the PHI node.

	* tree-pretty-print.c (dump_generic_node): Only retrieve basic
	block information from GIMPLE statements.
	Always output the THEN and ELSE clauses of COND_EXPR nodes.

	* tree-simple.c (is_gimple_stmt): Accept PHI_NODEs.
	(is_gimple_id): Accept SSA_NAMEs.

	* tree-ssa-copyprop.c (copyprop_phi): If an argument is used as a
	real operand, propagate the attribute into the LHS of the PHI.

	* tree-ssa-live.c (create_ssa_var_map): Don't set 'used' flag on
	both the operand and the result of VDEFs.
	Only register PHI results and arguments that have been used as real
	operands.
	(calculate_live_on_entry): Fix formatting in debugging message.

	* tree-ssa.c (register_new_def): Add new argument
	'is_real_operand'.  If it's set, set SSA_NAME_HAS_REAL_REFS for the
	new name.  Update all callers.
	(rewrite_operand): Add new argument 'is_real_operand'.  If it's
	set, set SSA_NAME_HAS_REAL_REFS to the operand.
	(eliminate_build): Ignore PHI arguments and PHI results that have
	not been used in real operands.
	(rewrite_vdefs): Remove.  Update all users.
	(set_is_used): Don't handle SSA names.
	(coalesce_ssa_name): Ignore PHI arguments that have not had real
	references in the program.

	* tree.c (make_ssa_name): Update documentation.
	* tree.h (IS_EMPTY_STMT): Call integer_zerop instead of comparing
	against size_zero_node.
	(SSA_NAME_HAS_REAL_REFS): Define.
	(SSA_NAME_OCCURS_IN_ABNORMAL_PHI): Define.
	(struct tree_ssa_name): Add bitfields 'has_real_refs' and
	'occurs_in_abnormal_phi'.

2003-06-30  Jeff Law  <law@redhat.com>

	* c-simplify.c (gimplify_c_loop): Don't return a LOOP_EXPR for
	a do ... while (0) loop.

	* expr.c (expand_expr, case COND_EXPR): Be smarter about expanding
	a COND_EXPR with only one useful arm, which happens to be a GOTO_EXPR.

	* tree-cfg.c (remove_useless_stmts_and_vars): Don't remove user
	variables unless we're at -O2 or higher.

2003-06-30  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (expr_phi_insertion): Stop optimizing the expression
	if we have > some very large number of ephi operands, as it will
	take an ungodly amount of memory and time.
	(pre_expression): Push/pop gc context so we can do gc collection
	in between expressions.
	Throw away expression info right after done optimizing it.

2003-06-30  Jason Merrill  <jason@redhat.com>

	* gimplify.c (gimplify_call_expr): Check PUSH_ARGS_REVERSED.

	* gimplify.c (gimplify_modify_expr): Also force a call with a
	possible nonlocal goto into a temporary.
	(gimplify_return_expr): Don't duplicate the MODIFY_EXPR.
	* tree-iterator.h (tsi_one_before_end_p): New fn.

2003-06-29  Jeff Sturm   <jsturm@one-point.com>

	* fold-const.c (fold): Don't save_expr unless TREE_SIDE_EFFECTS.

2003-06-26  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (gimplify_stmt_expr): Handle statement-expressions
	that don't end in a non-void expression.  Emit a warning in that
	case.

2003-06-26  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (fixup_domchildren): Rename from
	compute_domchildren, change to not use our own array.
	(domchildren): Remove variable.
	(insert_occ_in_preorder_dt_order_1): Use dom_children now.
	(insert_euse_in_preorder_dt_order_1): Ditto.
	(search_dt_preorder): Ditto.
	(handle_bb_creation): Fix to work properly.
	(tree_perform_ssapre): Remove remnants of domchildren.
	Redo dominator info if we have to due to a new block.

2003-06-26  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (handle_switch_split): Use a tree iterator to find the
	real split point rather than a block iterator.

2003-06-26  Jason Merrill  <jason@redhat.com>

	* tree-simple.c (is_gimple_stmt): Complete.

2003-06-24  Jeff Law  <law@redhat.com>

	* tree-cfg.c (remove_useless_stmts_and_vars): On the first
	iteration, remove unused variables from BIND_EXPRs.
	* tree-flow.h (var_ann_d): Add new field USED.
	(set_is_used): Prototype.
	(remove_useless_stmts_and_vars): Update prototype.
	* tree-ssa-live.c (create_ssa_var_map): Note which variables
	are used so that we can delete those which are not used.
	* tree-ssa.c (create_temp): Mark the new temporary as being used.
	(rewrite_out_of_ssa): Note if the call to remove_useless_stmts_and_vars
	is the first iteration or not.
	(set_is_used): New function.

	* c-decl.c (store_parm_decls): Variables and parameters on the
	pending_sizes chain have nonlocal uses.

2003-06-25  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c: Convert to ISO C.
	(handle_bb_creation): New function.
	(ephi_will_be_avail): Remove dead code.
	(finalize_1): Use handle_bb_creation, start to fix edge insertion
	related fun.
	(maybe_find_rhs_use_for_var): Stop using tree_stmt.
	(code_motion): Always get the temporary from the right place.

2003-06-24  Jason Merrill  <jason@redhat.com>

	* gimplify.c (gimplify_self_mod_expr): Add want_value parm.
	For postfix ops, make sure it returns an rvalue.
	(gimplify_expr): Copy a volatile reference into a temp.
	(create_tmp_var): Require a complete type.
	(create_tmp_alias_var): Use TYPE_VOLATILE on types.
	* tree-simple.c (is_gimple_stmt): Flesh out a bit.
	(is_gimple_val): Don't allow volatiles.

	* c-simplify.c (gimplify_expr_stmt): Don't insert a null pointer.

	* gimplify.c (gimplify_return_expr): Search through the gimple
	form for the interesting MODIFY_EXPR.
	(gimplify_modify_expr): Don't suppress posteffects if want_value.

2003-06-24  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (struct dfa_stats_d): Remove obsolete fields
	num_tree_refs and size_tree_refs.  Update all users.
	(dump_dfa_stats): Also dump information about VUSE and VDEF
	operands.
	* tree-ssa.c (rewrite_vdefs): Dump information about VDEF operators
	promoted to real copies if -fdump-tree-optimized-details is given.

2003-06-23  Jeff Law  <law@redhat.com>

	* tree-ssa.c (avail_expr_eq): Verify types are the same before
	handing expressions to operand_equal_p.

	* tree-cfg.c (make_edges): Remove fake edges before building
	extra edges for TRY_FINALLY_EXPRs.  Delete unnecessary edges
	leaving the TRY block in a TRY_FINALLY_EXPR.
	(find_contained_blocks): Don't consider statements in the CATCH
	clause of a TRY_CATCH_EXPR when noting the last statement in
	the block.
	* tree-dfa.c (remove_phi_arg): If we removed the last PHI argument,
	then remove the entire PHI node.
	* tree-ssa-dce.c (stmt_useful_p): Consider the other EH related
	nodes useful as well (TRY_FINALLY_EXPR, TRY_CATCH_EXPR, and
	EH_FILTER_EXPR).

	* tree-cfg.c (remove_useless_stmts_and_vars): If the body of a
	TRY_CATCH_EXPR is empty, then the entire TRY_CATCH_EXPR can
	be safely removed.

	* tree-cfg.c (find_contained_blocks): Renamed from
	find_contained_blocks_and_edge_targets.  Remove targets
	bitmap argument and no longer record targets of edges.
	All callers changed.
	(make_edges): No longer need TRY_TARGETS bitmap.  Kill it.
	Simplify code which creates additional edges out of the TRY
	block and the FINALLY block in a TRY_FINALLY_EXPR.

2003-06-23  Diego Novillo  <dnovillo@redhat.com>

	* tree-alias-common.c (ptr_may_alias_var): Don't handle memory
	tags.
	* tree-dfa.c (struct alias_set_d): Remove.  Update all users.
	(alias_sets): Remove.  Update all users.
	(struct walk_state): Remove field aliased_objects_found.
	(struct alias_map_d): New.
	(addressable_vars): New local variable.
	(pointers): New local variable.
	(add_stmt_operand): Do not force aliased variables to be in virtual
	operands.
	(register_alias_set): Remove.  Update all users.
	(find_alias_for): Remove.  Update all users.
	(get_memory_tag_for): New local function.
	(num_referenced_vars): Remove.
	(num_aliased_objects): Remove.  Update all users.
	(aliased_objects): Remove.  Update all users.
	(aliased_objects_alias_set): Remove.  Update all users.
	(num_call_clobbered_vars): Remove.  Update all users.
	(dump_variable): Move code to dump aliases ...
	(dump_may_aliases_for): ... here.
	(debug_may_aliases_for): New function.
	(compute_may_aliases): Initialize 'addressable_vars' and 'pointers'
	arrays.
	(compute_alias_sets): Re-implement matching pointers with
	addressable variables.  Limit the size of may-alias sets.
	(may_alias_p): Re-implement to compare pointers against variables,
	instead of memory tags.
	(dump_alias_info): Re-implement to display pointers and addresable
	variables arrays.
	(add_referenced_var): Collect addressable variables and pointers.
	Share memory tags among pointers that may alias each other.
	* tree-flow.h (num_referenced_vars): Change to macro.
	(referenced_var): Likewise.
	(num_call_clobbered_vars): Likewise.
	(call_clobbered_var): Likewise.
	(dump_may_aliases_for): Declare.
	(debug_may_aliases_for): Declare.
	* tree-ssa.c (rewrite_vdefs): New local function.
	(rewrite_out_of_ssa): Call it.

2003-06-23  Jeff Law  <law@redhat.com>

	* tree-cfg.c (make_edges): Walk TRY_FINALLYs inner to outer and
	simplify creation of special edges related to the TRY_FINALLY_EXPR.

	* tree-cfg.c (remove_useless_stmts_and_vars): More aggressively
	remove TRY_CATCH_EXPRs and TRY_FINALLY_EXPRs.

	* tree-cfg.c (make_edges): Remove fake edges.
	(make_exit_edges): Mark edges from nonreturning functions to the
	exit block as being fake edges.

	* gimplify.c (gimplify_modify_expr): Don't create a new MODIFY_EXPR,
	reuse the existing one.

2003-06-23  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (find_insert_location): Default case should insert after
	the last stmt in the block.

2003-06-22  Jeff Sturm  <jsturm@one-point.com>

	* Makefile.in (old-tree-inline.o): Remove rule.
	* old-tree-inline.c: Remove.

2003-06-19  Jeff Law  <law@redhat.com>

	* tree-cfg.c (make_ctrl_stmt_edges): Do not create bogus edges
	to the successor block of TRY_CATCH_EXPR, TRY_FINALLY_EXPR,
	CATCH_EXPR or EH_FILTER_EXPR nodes.

	* gimplify.c (gimplify_modify_expr): If the RHS of an MODIFY_EXPR
	might throw, then make sure its result goes into a temporary.

	* tree-cfg.c (handle_switch_split): Handle case where target
	block has only one statement (the case label itself).

2003-06-19  Diego Novillo  <dnovillo@redhat.com>

	* doc/invoke.texi: Add documentation for -ftree-dominator-opts
	that was missing from an earlier patch.

2003-06-19  Jeff Sturm  <jsturm@one-point.com>

	* gimplify.c (gimplify_expr): Handle LABELED_BLOCK_EXPR
	and EXIT_BLOCK_EXPR.
	(gimplify_labeled_block_expr): New function.
	(gimplify_exit_block_expr): New function.

2003-06-18  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (EDGE_INSERT_LOCATION_BSI_AFTER): New location code.
	(cleanup_switch_expr_graph): Find default case correctly.
	(bsi_insert_after): Get BB from stmt when its avialble.
	(bsi_insert_before): Get BB from stmt when its avialble.
	(handle_switch_fallthru): New. Handle edge from switch to the fallthru.
	(handle_switch_split): Re-implement using new scheme.
	(find_insert_location): Use handle_switch_fallthru ().
	(bsi_insert_on_edge_immediate): Handle EDGE_INSERT_LOCATION_BSI_AFTER.
	* tree-iterator.h (tsi_last): New. Find last stmt in a chain.

2003-06-17  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c (find_func_aliases): Guard cast op
	properly.
	(ptr_may_alias_var): Small optimization to avoid calling
	decl_function_context so often.
	* tree-alias-ander.c (ander_simple_assign): Ignore if lhs == rhs.

2003-06-17  Steven Bosscher  <steven@gcc.gnu.org>

	* timevar.def (TV_TREE_BUILD_FUD_CHAINS): Remove.

2003-06-16  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (DONT_SIMULATE_AGAIN): Define.
	(visit_phi_node): Don't do anything if the PHI node doesn't need to
	be simulated.
	If the PHI variable does not have real references, consider it
	VARYING.
	If the PHI node has a lattice value of VARYING, set
	DONT_SIMULATE_AGAIN.
	(visit_stmt): Don't do anything if the statement doesn't need to be
	simulated.
	Only visit conditional branches COND_EXPR and SWITCH_EXPR.
	If the statement doesn't produce a result mark it with
	DONT_SIMULATE_AGAIN.
	(visit_assignment): Remove unnecessary def_op() check.
	If the value is VARYING, mark the statement with
	DONT_SIMULATE_AGAIN.
	(visit_cond_stmt): Remove unnecessary is_ctrl_stmt() check.
	If the predicate is VARYING, mark the statement with
	DONT_SIMULATE_AGAIN.
	(initialize): Clear DONT_SIMULATE_AGAIN flag for every statement
	and PHI node.
	(likely_value): Get statement operands after checking if it makes
	aliased loads or has volatile operands.

2003-06-16  Jeff Law  <law@redhat.com>
	    Jason Merrill  <jason@redhat.com>

	* except.c (enum eh_region_type): Don't declare the enumeration
	members here.  Instead do it in except.h.
	(expand_eh_hander): Use expr_first instead of open-coding it.
	* except.h (enum eh_region_type): Define the enumeration memebers
	here.
	* tree-cfg.c (last_exec_block): Break out from make_edges.
	(could_trap_p): No longer static.
	(get_eh_region_type): New function.
	(make_try_expr_blocks): Keep the whole TRY_CATCH_EXPR or
	TRY_FINALLY_EXPR instead of just the handler part in the
	EH_STACK varray.  For a cleanup, record which cleanup higher
	in the EH_STACK it can reach.
	(make_edges): Use last_exec_block.
	(make_ctrl_stmt_edges): Thread cleanups as needed.
	(compute_reachable_eh):  Use get_eh_region_type.  Properly
	track when we can skip cleanups.  Skip cleanups when possible.
	* tree-flow.h (could_trap_p): Prototype.

2003-06-16  Andrew Macleod  <amacleod@redhat.com>

	* tree-cfg.c (find_insert_location): Check for control_altering stmts,
	and abort if its an unrecognized BB ending stmt.
	(bsi_commit_first_edge_insert): Rename to bsi_insert_on_edge_immediate,
	externalize, and change the interface to an on-demand inserter.
	(bsi_commit_edge_inserts): Call bsi_insert_on_edge_immediate().
	* tree-flow.h (bsi_insert_on_edge_immediate): Prototype.
	* tree-pretty-print.c (dump_block_info): Add 'ab' for abnormal edges.
	* tree-ssa-dce.c (process_worklist): Use sparse bitmaps.
	* tree-ssa-live.c (calculate_live_on_entry): Abort if ssa_name has a
	definition, but is also live on entry.
	* tree-ssa.c (coalesce_ssa_name): Call abort() instead of error(), and
	provide more detailed info.
	(rewrite_out_of_ssa): Provide CFG dumps before and after rewritting.

2003-06-16  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_mark): Use GC-compatible htab_create_ggc.

2003-06-15  Jeff Law  <law@redhat.com>

	* tree-ssa-ccp.c (visit_phi_node): If the PHI is already known
	to be varying, don't recompute its value.

2003-06-14  Jeff Law  <law@redhat.com>
	    Jason Merrill <jason@redhat.com>

	* tree-cfg.c (make_blocks): Do not return early if presented
	with an empty statement.
	(make_ctrl_stmt_edges):  Do not try to optimize an empty TRY
	block in a TRY_FINALLY_EXPR.  Simplify TRY_FINALLY_EXPR,
	TRY_CATCH_EXPR, CATCH_EXPR, and EH_FILTER_EXPR now that empty
	statements are no longer shared.

2003-06-14  Kazu Hirata  <kazu@cs.umass.edu>

	* tree-ssa-pre.c: Fix a comment typo.

2003-06-13  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (get_stmt_operands): Abort if the statement is a
	variable.
	(create_var_ann): Abort if the variable is not a _DECL node.

2003-06-13  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mudflap_c_function): Change calling conventions so
	as to return the instrumented function body rather than changing the
	given fndecl in place.  Gimplify at the very end, for cosmetic
	reasons.
	* tree-mudflap.h, tree-nomudflap.c: Corresponding changes.
	* c-decl.c (c_expand_body_1): Call mudflap_c_function just before
	rtl expansion of function body; don't interfere with inlining.

2003-06-13  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c: Fix typo in previous change.

2003-06-13  Diego Novillo  <dnovillo@redhat.com>

	* c-common.c, c-common.h, c-decl.c, c-lang.c, c-simplify.c,
	flags.h, gimplify.c, langhooks-def.h, langhooks.c, langhooks.h,
	simple-break-elim.c, simple-goto-elim.c, toplev.c,
	tree-alias-common.c, tree-cfg.c, tree-dfa.c, tree-dump.c,
	tree-inline.c, tree-mudflap.c, tree-simple.c, tree-simple.h,
	tree-ssa-ccp.c, tree-ssa-pre.c, tree-ssa.c, tree.h, doc/invoke.texi:
	Rename SIMPLE to GIMPLE everywhere.

2003-06-13  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (bsi_commit_first_edge_insert): Only consider non-abnormal
	edges when determining whether an edge needs to be split.

	* tree-ssa-dce.c (process_worklist): When checking for GOTO and
	COND_EXPR's that are necessary, check each BB's predecessors only once.

2003-06-12  Jeff Law  <law@redhat.com>

	* tree-ssa.c (avail_expr_eq): Add some checking code to
	detect when equal expressions have different hash values.

	* tree.c (iterative_hash_expr): Don't hash types associated
	with conversions.  Instead hash on the signedness of the
	toplevel object and the operand of the conversion.

	* Makefile.in (gimplify.o): Depend on $(RTL_H).  Ugh.
	* gimplify.c: Include "rtl.h".
	(simplify_call_expr): Use call_expr_flags and check for ECF_CONST
	rather than checking bits in the tree node directly.

	* fold-const.c (operand_equal_p): CALL_EXPRs with side effects
	are never equal.

2003-06-11  Frank Ch. Eigler  <fche@redhat.com>

	* gcc.c (MFWRAP_SPEC): Always wrap main().
	* tree-mudflap.c (mudflap_enqueue_decl): Mark enqueued decls
	to prevent their repeated processing.

2003-06-11  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c: add graph_dump_file, graph_dump_flags.
	(finalize_1): Modify to use temporary in expr_info structure,
	remove temporary from arguments.
	Use bsi_insert_on_edge for ephi insertions.
	Set EREF_TEMP on inserted euses.
	(repair_phi_injury): Note (to dump file)  injuries we have
	repaired already.
	(repair_use_injury): Ditto.
	(repair_euse_injury): Ditto.
	(count_stmts_in_bb): Count both forwards and backwards, and make
	sure the numbers agree. This makes sure both the head and end are
	updated properly.
	(code_motion): Use the EREF_TEMP, rather than calculating the
	reaching def, when possible, because it's faster.
	Add the phi we created when we insert the ephi.  We should always
	be able to get the reaching def of the ephi from EREF_TEMP (since
	the args should have already been inserted, or in the case of
	phi's, have a phi already allocated), so abort if we can't.
	(create_expr_ref): Take expr_info parameter.  Make a phi for the
	ephi's, but don't add to the bb yet. Update all callers.
	(get_default_def): New function.
	(get_reaching_def): Use it to find the default def when we hit the
	top of the dom tree.
	(struct expr_info): Add temp.
	(new_rename_1): Dump out occurrences after rename 1, but before
	rename 2.
	(requires_edge_placement): Now that we can insert on edges, we
	shouldn't need this, so make it always return false.
	Will remove unless something bad comes up.
	(pre_expression): Start working on dumping the redundancy graph.

	* tree.h (struct treeeref_common): Add the temp member.
	Add EREF_TEMP macro.
	(tree_dump_index): Reorder to match actual optimization order.
	Add TDI_predot.

	* tree-dump.c: Ditto.

2003-06-11  Jeff Law  <law@redhat.com>

	* gimplify.c (simplify_call_expr): Clear TREE_SIDE_EFFECTS for
	calls to "const" functions.

	* tree-inline.c (expand_call_inline): Recalculate TREE_SIDE_EFFECTS
	properly when inlining gimplified functions.

	* fold-const.c (operand_equal_p): Handle CALL_EXPRs.

	* tree-cfg.c (first_exec_block): Kill.
	(make_edges): Use bb_for_stmt rather than first_exec_block.
	(make_ctrl_stmt_edges, make_exit_edges): Likewise.
	(make_loop_expr_edges, make_cond_expr_edges): Likewise.
	(successor_block): Don't skip empty statements.

	* tree-ssa.c (rewrite_and_optimize_stmt): Do not special case
	CALL_EXPRs they're caught by the TREE_SIDE_EFFECTS test.

	* tree-ssa.c (rewrite_and_optimize_stmt): Improve/correct setting of
	may_optimize_p.  Simplify later code knowing may_optimize_p is
	correctly set.
	(avail_expr_hash): Do not use iterative_hash_object or deal with
	SSA names for real operands.  Instead use iterative_hash_expr
	which handles both.
	(avail_expr_eq): Use operand_equal_p to test for equality.

2003-06-11  Steven Bosscher  <steven@gcc.gnu.org>

	* tree-flow.h, tree-ssa-ccp.c, tree-ssa-copyprop.c,
	tree-ssa-dce.c, tree-ssa-live.c, tree-ssa-live.h:
	Convert function prototypes to ISO C.

2003-06-10  Jeff Law  <law@redhat.com>

	* toplev.c (parse_options_and_default_flags): Fix typo in last change.

	* gimplify.c (simplify_expr, case BIT_FIELD_REF): Make sure
	to call recalculate_side_effects after gimplifying the
	operands.

2003-06-10  Diego Novillo  <dnovillo@redhat.com>

	* toplev.c (flag_tree_dom): New variable.
	(f_options): Add new entry for -ftree-dominator-opts.
	(parse_options_and_default_flags): Enable flag_tree_dom for
	-O1 and higher.  At -O2 and higher, disable flag_tree_dom is
	SSA-PRE is also specified.
	* flags.h (flag_tree_dom): Declare.
	* doc/invoke.texi: Document -ftree-dominator-opts.
	* tree-ssa.c (rewrite_block): Disable tracking of available
	expressions when not doing dominator optimizations.
	Call rewrite_stmt when not doing dominator optimizations.
	Otherwise, call rewrite_and_optimize_stmt.
	(rewrite_stmt): Don't optimize the statement.  Just rename.
	(rewrite_and_optimize_stmt): Optimize the statement while rewriting
	its operands.
	(lookup_avail_expr): Update comments.

2003-06-10  Andrew Haley  <aph@redhat.com>

	* c-simplify.c (c_simplify_stmt): case ASM_STMT: Ensure qualifiers
	come from input statement.

2003-06-09  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (handle_switch_split): Update PHI nodes when splitting.
	(tree_split_edge): Update PHI nodes in destination block.

2003-06-09  Steven Bosscher  <steven@gcc.gnu.org>

	* basic-block.h, tree-dfa.c, tree-ssa.c, tree-cfg.c,
	tree-flow.h: Convert function prototypes to ISO C.

2003-06-09  Daniel Berlin  <dberlin@dberlin.org>

	* tree-cfg.c (bsi_commit_edge_inserts): Fix computation of
	new_blocks.

2003-06-08  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (handle_switch_split): Don't allocate basic block
	annotations more than once.
	(bsi_commit_first_edge_insert): Likewise.

2003-06-07  Jeff Sturm  <jsturm@one-point.com>

	* tree-cfg.c (could_trap_p): New function.
	(stmt_ends_bb_p): Handle flag_non_call_exceptions.
	(make_exit_edges): Handle flag_non_call_exceptions.
	(is_ctrl_altering_stmt): Handle flag_non_call_exceptions.
	* tree-inline.c (walk_tree): Add case for CHAR_TYPE.
	* tree-ssa-dce.c (stmt_useful_p): Keep all CATCH_EXPRs.

2003-06-05  Jason Merrill  <jason@redhat.com>

	* stmt.c (asm_op_is_mem_input): New fn.
	* tree.h: Declare it.
	* gimplify.c (simplify_asm_expr): Call resolve_asm_operand_names.
	Use is_simple_modify_expr_lhs for mem input ops.

2003-06-05  Frank Ch. Eigler  <fche@redhat.com>

	* c-mudflap.c (mflang_register_call): Give the synthetic decl
	undefined (not zero) size.

2003-06-05  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mx_flag): Remove.  Update callers to use mf_mark.
	(TREE_MUDFLAPPED_P): Remove.  Update callers to use mf_marked_p.
	(mf_mark, mf_marked_p): Replacement functions to replace old node
	marking based on tree flag-bits.
	(mf_mostly_copy_tree_r): Preserve markedness across copies.
	* tree-mudflap.h: Add new decls
	* c-mudflap.c (mx_flag): Remove.  Update callers to use mf_mark.

2003-06-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_stmt_operand): Always consider non-scalar types
	virtual operands.

2003-06-04  Andrew MacLeod  <amacleod@redhat.com>

	* toplev.c (parse_options_and_default_flags): Turn tree_copyprop on by
	default.
	* tree-cfg.c (linearize_control_structures, linearize_cond_expr,
	replace_stmt, merge_tree_blocks, remap_stmts): Fix PROTOS.
	(find_insert_location): Add additional basic block parameter. Handle
	switch stmts.
	(handle_switch_split): New. Split edges to switch labels.
	(bsi_commit_first_edge_insert): Add extra parameter to
	find_insert_location call. Fix split block chaining in THEN & ELSE.
	* tree-ssa-live.c (calculate_live_on_entry): Process all PHI def's
	after all the arguments have been processed.
	* tree-ssa.c (struct ssa_stats_d, struct loops *loops, var_is_live,
	rewrite_into_ssa): Remove old UNSSA code.
	(rewrite_block): Remove stmt is rewrite_stmt returns 1.
	(assign_vars): Remove abort and enable overlapping live ranges.
	(replace_variable): New. Replace SSA name with the partition variable.
	(rewrite_out_of_ssa): Use replace_variable().
	(dump_tree_ssa_stats): Remove old UNSSA code.
	(rewrite_stmt): Return 1 if stmt should be deleted. Remove old
	UNSSA code.

2003-06-03  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (simplify_call_expr): Move code to mark MD builtins
	non-simplifiable...
	* tree-simple.c (is_simple_call_expr): ... here.

2003-06-03  Diego Novillo  <dnovillo@redhat.com>

	* c-parse.in: Fix botched merge.

2003-06-03  Diego Novillo  <dnovillo@redhat.com>

	* tree-mudflap.c (MARK_TREE_MUDFLAPPED, TREE_MUDFLAPPED):
	Use TREE_VISITED instead of TREE_BOUNDED.
	* c-mudflap.c (TREE_MUDFLAPPED): Likewise.
	* tree-pretty-print.c (dump_generic_node): Remove
	references to TYPE_QUAL_BOUNDED.

2003-06-03  Jason Merrill  <jason@redhat.com>

	* gimplify.c (simplify_cond_expr): Call truthvalue_conversion
	before invert_truthvalue.

2003-06-02  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (compute_may_aliases): Call delete_alias_vars whenever we
	call create_alias_vars.

	* tree-alias-common (ptr_may_alias_var): Cleanup determination of
	global vars and whatnot.

2003-06-02  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa.o, tree-cfg.o): Add dependency on cfgloop.h
	(tree-optimize.o): Remove dependency on cfgloop.h.
	* basic-block.h (struct basic_block_def): Fix documentation for
	field 'loop_father'.
	* tree-dfa.c (add_referenced_var): Fix type of element
	pushed into aliased_objects_alias_set.
	* tree-optimize.c: Don't include cfgloop.h
	(optimize_function_tree): Move code to initialize loop optimizer...
	* tree-cfg.c (build_tree_cfg): ... here.
	* tree-ssa.c: Include cfgloop.h.
	(loops): New file local variable.
	(rewrite_into_ssa): Initialize/finalize loop optimizer.
	(rewrite_stmt): Call var_is_live when processing redundant
	assignments to the same LHS.
	(var_is_live): Add heuristic to discover overlapping definitions in
	loops that do not have PHI nodes for VAR at the loop header.

2003-06-02  Jason Merrill  <jason@redhat.com>

	* gimplify.c (simplify_expr): Only allow a cast from a 'val'.
	* tree-simple.c (is_simple_cast): Likewise.

2003-06-02  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (bsi_insert_before): Update end of block pointer if we
	inserted before the last stmt in a block. (The container changed).
	* tree-ssa.c (elim_backward): Inserting copy should be within
	conditional check.
	(elim_create): Only select one bit instead of the all.

2003-06-01  Jason Merrill  <jason@redhat.com>

	* Makefile.in: Remove lots of -Wno-error targets.

	* tree-simple.c (recalculate_side_effects): Check TREE_THIS_VOLATILE.

	* gimplify.c (simplify_compound_lval): Call
	recalculate_side_effects on each of the subexpressions.

	* expr.c (expand_expr) <COND_EXPR>: Use the if-statement code if
	it's void.

2003-06-01  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c: Remove setting of DECL_CONTEXT in temp vars,
	it's done in create_tmp_alias_var for us.
	(ptr_may_alias_var): Check if the variables are memory tags, and get
	the associated pointers if they are.

2003-05-30  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mudflap_c_function, enqueue_constant, enqueue_decl):
	Rework dumping logic.

2003-05-27  Jason Merrill  <jason@redhat.com>

	* tree-ssa.c (avail_expr_hash): Simplify by using iterative_hash_expr
	in more places.
	* tree.c (iterative_hash_expr): Handle SSA_NAME.

2003-05-29  Jeff Law  <law@redhat.com>

	* tree-ssa.c (rewrite_stmt): Detect and remove redundant
	memory loads.
	(avail_expr_hash): Use iterative_hash_expr, not iterative_hash_object
	as needed.

2003-05-27  Jason Merrill  <jason@redhat.com>

	* gimplify.c (shortcut_cond_expr): Avoid jumps to jumps.

2003-05-26  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (simplify_switch_stmt): A SWITCH_EXPR also gets the
	source location of its first line.

2003-05-24  Diego Novillo  <dnovillo@redhat.com>

	Do not consider INDIRECT_REF nodes to be variables.

	* gimplify.c (create_tmp_alias_var): Allow temporaries of
	ARRAY_TYPE to be created.
	Create new temporaries with function scope.
	Don't call build_type_variant.
	Mark the temporary volatile if its type is volatile.

	* tree-dfa.c: Change every function that received a variable and
	its base symbol to just receive the variable.  Update all callers.
	(struct alias_set_d): Remove field 'tag_sym'.
	Add documentation for fields.
	(struct walk_state): Add field 'is_indirect_ref'.
	Add documentation for fields.
	(opf_ignore_bp): Remove.  Update all users.
	(aliased_objects_base): Remove.  Update all users.
	(get_stmt_operands): If the statement had virtual operands, do not
	scan them again.
	(get_expr_operands): Handle INDIRECT_REF nodes by adding an operand
	for the memory tag represented and a use for the base pointer.
	Don't add VUSE operands for pointer arguments to functions.
	Force a virtual operand when processing ADDR_EXPR nodes.
	(add_stmt_operand): If the variable is an alias tag, always add it
	as a virtual operand.
	Remove code to handle INDIRECT_REF nodes.
	Move code to determine if a pointer may point to global memory to
	find_vars_r.
	Set has_volatile_ops flag in the statement when adding operands for
	globals and local statics.
	If the variable is an alias tag, mark the statement as making
	aliased loads or stores.
	(set_def): Mark the variable as having real references.
	(add_use): Likewise.
	(add_vdef): Remove code to re-add previous virtual operands.
	If PREV_VOPS is set, don't add a new virtual operand.
	(add_vuse): Likewise.
	(dump_variable): Show annotation bitfields 'mem_tag',
	'occurs_in_abnormal_phi', 'is_alias_tag' and 'is_stored'.
	(compute_may_aliases): Initialize walk_state.is_indirect_ref to 0.
	(compute_alias_sets): Don't remove alias sets with exactly one
	entry.
	(register_alias_set): Re-implement to support memory tags instead
	of INDIRECT_REF nodes.  Document algorithm.
	(find_alias_for): Likewise.
	(may_alias_p): Likewise.
	(add_may_alias): Likewise.
	(find_vars_r): If a pointer assignment is found and the RHS of the
	assignment may access global memory, mark the pointer as pointing
	to global memory.
	Handle INDIRECT_REF nodes by marking the base pointer as
	dereferenced.
	Do not share INDIRECT_REF nodes.
	(add_referenced_var): Don't handle INDIRECT_REF nodes.
	If called from a store operation, mark the variable as stored.
	By default mark the variable as not having real references.
	When processing a pointer that has been dereferenced, create a
	memory tag for the pointer.
	(add_indirect_ref_var): Remove.  Update all callers.
	(get_virtual_var): Don't handle INDIRECT_REF nodes.
	(find_hidden_use_vars_r):

	* tree-flow-inline.h (get_var_ann): New function.  Change all
	functions that called var_ann and create_var_ann to call
	get_var_ann.
	(get_stmt_ann): Likewise.
	(set_indirect_ref): Remove.  Update all callers.
	(indirect_ref): Remove.  Update all callers.
	(create_indirect_ref): Remove.  Update all callers.

	* tree-flow.h (struct var_ann_d): Remove fields 'is_loaded',
	'unused' and 'indirect_ref'.
	Add fields 'mem_tag', 'is_mem_tag', 'is_alias_tag' and
	'has_real_refs'.
	(get_var_ann, get_stmt_ann): Declare.
	(create_indirect_ref, set_indirect_ref, indirect_ref): Remove.

	* tree-pretty-print.c (dump_generic_node): Don't handle
	INDIRECT_REF nodes inside SSA_NAME nodes.

	* tree-simple.c (get_base_symbol): Don't handle INDIRECT_REF nodes.
	(is_simple_unary_expr): Don't call STRIP_NOPS.

	* tree-ssa-copyprop.c (get_original): Don't handle INDIRECT_REF
	nodes.  Allow pointers to be copy propagated.

	* tree-ssa-dce.c (need_to_preserve_store): Don't handle
	INDIRECT_REF nodes.

	* tree-ssa-live.c (create_ssa_var_map): Only process variables that
	have real references.

	* tree-ssa.c: Update documentation regarding INDIRECT_REF nodes.
	(update_indirect_ref_vuses): Remove.  Update all users.
	(update_pointer_vuses): Remove.  Update all users.
	(MAY_COPYPROP_P): Remove.  Update all users.
	(create_temp): Don't handle INDIRECT_REF nodes.
	(coalesce_ssa_name): Ignore variables that have no real references.
	(rewrite_stmt): Mark the statement modified if a new copy or
	constant was propagated into it.
	Don't special-case pointers.
	(rewrite_operand): Don't handle INDIRECT_REF nodes.
	* tree.h (SSA_VAR_P): Remove.  Update all users.
	(SSA_DECL_P): Rename to SSA_VAR_P.

2003-05-22  Jeff Law  <law@redhat.com>

	* gimplify.c (simplify_expr): Avoid gimplifying expressions which
	are already in gimple form.
	* tree-simple.c (is_simple_constructor): No longer treat TREE_STATIC
	constructors specially.
	(is_simple_addr_expr_arg): If we're taking the address of a label
	for the first time, then the ADDR_EXPR is not in gimple form.

2003-05-22  Jason Merrill  <jason@redhat.com>

	* tree-cfg.c (compute_reachable_eh): Don't skip cleanups.

	* tree-dfa.c (add_referenced_var): Read-only INDIRECT_REFs can
	also be clobbered by function calls.

2003-05-22  Jeff Law  <law@redhat.com>

	* expr.c (convert_move): Avoid making silly copies.
	(expand_expr, case BIND_EXPR): Correctly determine when the
	result of the BIND_EXPR will not be used.

2003-05-21  Jason Merrill  <jason@redhat.com>

	* tree-cfg.c (compute_reachable_eh): Handle multiple CATCH_EXPRs.

	* builtins.c (simplify_builtin_next_arg): Split out from...
	(expand_builtin_next_arg): ...here.
	(simplify_builtin_va_start): Split out from...
	(expand_builtin_va_start): ...here.
	(simplify_builtin): Call it.
	* gimplify.c (simplify_call_expr): If simplify_builtin worked,
	just return.

2003-05-20  Jason Merrill  <jason@redhat.com>

	* gimplify.c (shortcut_cond_expr, shortcut_cond_r): Rewrite.
	(simplify_cond_expr): Also invert ifs with no 'then'.
	(build_and_jump): New fn, split out from...
	(gimplify_exit_expr): ...here.  Don't bother gimplifying the
	condition.

	* gimplify.c (simplify_save_expr): Add post-effects to the
	postqueue.

	* gimplify.c (mostly_copy_tree_r): Don't unshare constants.

2003-05-20  Jeff Law  <law@redhat.com>

	* expr.c (expand_expr, case COND_EXPR): Avoid useless RTL generation
	when the THEN or ELSE arm is empty.

	* tree-cfg.c (make_loop_expr_blocks): Do not accept next_block_link
	as an argument, make it a local variable.  Callers changed.

	* tree-cfg.c (remove_useless_stmts_and_empty_vars): Eliminate
	GOTO_EXPRs which jump to the next statement occuring in an
	outer control/block structure nest.

2003-05-20  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (set_rhs): Fix typo in handling of
	RETURN_EXPR nodes.

2003-05-19  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c (alias_get_name): Handle unnamed variables once
	and for all.

2003-05-19  Jeff Law <law@redhat.com>

	* tree-ssa-dce.c (remove_conditional): If the conditional's block
	has no post dominator in the CFG, then wire it to the exit node.
	Avoid unnecessary check of bb->succ.

2003-05-17  Daniel Berlin  <dberlin@dberlin.org>

	* tree-pretty-print.c (MASK_POINTER): Parameter is P, not node.

2003-05-17  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c (get_alias_var): Handle REFERENCE_EXPR.
	(find_func_aliases): Ditto.
	(get_alias_var): Use POINTER_TYPE_P.

2003-05-16  Frank Ch. Eigler  <fche@redhat.com>

	* gcc.c (cc1_options): Correct "-fmudflapth" handling.
	* tree-mudflap.c (mudflap_c_function, mf_build_check_statement_for):
	Use locally cached mask/shift values only in single-threaded mode.

2003-05-16  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c (ptr_may_alias_var): Fix DECL_CONTEXT
	checking.

2003-05-16  Andrew MacLeod  <amacleod@redhat.com>

	* tree-flow.h (ssa_make_edge): Remove prototype.
	* tree-ssa-dce.c (remove_dead_stmt): Change comment about removing
	conditionals.
	(remove_conditional): Don't update PHI nodes or call ssa_make_edge.
	* tree-ssa.c (ssa_make_edge): Remove.

2003-05-16  Jeff Law  <law@redhat.com>

	* tree-cfg.c (remove_useless_stmts_and_vars): Handle case where
	both arms of an if-then-else simply jump to the same location.

	* tree-ssa-ccp.c (get_rhs): Correctly handle MODIFY_EXPR embedded in
	a RETURN_EXPR.
	(set_rhs): Likewise.

2003-05-15  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

	* Makefile.in (regmove.o-warn): Change to -Wno-error.

2003-05-15  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (enum find_location_action): Enum for find_insert_location.
	(bsi_insert_before): Handle insert at start of a BB and update pointers
	from parents if appropriate.
	(find_insert_location): Handle COND_EXPR properly. Return
	an enum type indicating what action to take on the returned value.
	(bsi_commit_first_edge_insert): Use new returned action.

2003-05-15  Jeff Law  <law@redhat.com>

	* tree-cfg.c (make_edges): Factor out loop invariants from
	code to insert edges from the TRY to the FINALLY block.
	Avoid creating unnecessary edges from the end of the
	FINALLY block back to the start of the FINALLY block.

2003-05-15  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa.c (rewrite_out_of_ssa): Undo previous patch.

2003-05-15  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa.c (rewrite_out_of_ssa): Don't dump the optimized
	function after the SSA->normal pass.

2003-05-14  Toon Moene  <toon@moene.indiv.nluug.nl>

	* Makefile.in: Add additional -Wno-error targets for Alpha.

2003-05-13  Jason Merrill  <jason@redhat.com>

	* gdbinit.in (pgs, pge): New macros.

	Implement expression temporary optimization.
	* gimplify.c (gimplify_ctx): Add temp_htab field.
	(push_gimplify_context): Initialize it.
	(pop_gimplify_context): Destroy it.
	(simplify_expr): If there's no internal postqueue, generate an
	expression temporary.
	(gimple_tree_hash, gimple_tree_eq): New fns.
	(create_tmp_from_val, lookup_tmp_var): New fns.
	(get_formal_tmp_var): New fn.
	(internal_get_tmp_var): New fn.
	(get_initialized_tmp_var): Use it.
	* tree-simple.h: Declare it.

	* gimplify.c (simplify_cond_expr): Reorganize.
	(shortcut_cond_expr, shortcut_cond_r): New fns.
	(build_and_jump): New fn.
	(gimplify_exit_expr): Use it.

	* gimplify.c (simplify_expr): Do better at stripping unnecessary
	NOPs.  Tidy GOTO_EXPR handling.  Don't allow NON_LVALUE_EXPR.
	* tree-simple.c (is_simple_modify_expr): Don't allow NON_LVALUE_EXPR.
	(is_simple_binary_expr, is_simple_condexpr): Likewise.
	(is_simple_unary_expr, is_simple_compound_lval): Likewise.
	(is_simple_id): Likewise.

	* tree-ssa.c (rewrite_stmt): Discard redundant assignments.
	(avail_expr_eq): Don't test ops1 == ops2.
	(avail_expr_hash): Use iterative_hash_object.

2003-05-13  Jeff Law  <law@redhat.com>

	* tree-cfg.c (cleanup_tree_cfg): Update comments.   Set repeat
	anytime we remove a control structure.

	* tree-flow.h (struct var_ann_d): New field occurs_in_abnormal_phi.
	* tree-ssa.c (MAY_COPYPROP_P): Do not allow copy propagations
	if either argument occurs in an abnormal phi.
	* tree-dfa.c (add_phi_arg): Set occurs_in_abrnomal_phi as needed.
	* tree-ssa-copyprop.c (copyprop_stmt): Do not allow copy
	propagations if either argument occurs in an abnormal phi.
	(copyprop_phi): Likewise.

2003-05-12  Diego Novillo  <dnovillo@redhat.com>

	* c-common.h (STATEMENT_CODE_P): Use size_t cast instead
	of int.
	(INIT_STATEMENT_CODES): Change type of local variable i to
	size_t.

2003-05-12  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c (dump_c_node): Call CONSTRUCTOR_ELTS
	to access the operand of a CONSTRUCTOR node.
	* tree-pretty-print.c (dump_generic_node): Likewise.

2003-05-11  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_if_stmt): Replace calls to
	warning_with_file_and_line with warning.

2003-05-12  Frank Ch. Eigler  <fche@redhat.com>

	* toplev.c (lang_independent_options): Add "-fmudflapth".
	* flags.h (flag_mudflap): Document meaning of >1 value.
	* gcc.c (MFWRAP_SPEC, MFLIB_SPEC): Add -fmudflapth support.
	(cpp_unique_options, cc1_options): Ditto.

2003-05-10  Sebastian Pop  <s.pop@laposte.net>

	* gimplify.c (simplify_expr): Replace CONST_DECL with its DECL_INITIAL.

2003-05-09  Sebastian Pop  <s.pop@laposte.net>

	* tree-optimize.c (optimize_function_tree): Clarify the use of the
	loop analyzer.

2003-05-09  Jeff Law  <law@redhat.com>

	* c-simplify.c (simplify_cleanup): Remove code which optimizes
	TRY_FINALLY and TRY_CATCH.  It doesn't trigger.

	* tree-cfg.c (remove_useless_stmts_and_vars): Optimize away
	TRY_CATCH and TRY_FINALLY blocks when possible.

2003-05-09  Diego Novillo  <dnovillo@redhat.com>

	* tree-pretty-print.c (dump_generic_node): CONSTRUCTOR
	nodes have only one operand now.

2003-05-08  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (pdom_info): New file level static.
	(cleanup_tree_cfg): Free dominance info, if it was used.
	(bsi_replace): New. Replace a stmt with a new one.
	(linearize_cond_expr): Use post dominator info to determine is a
	conditional can be safely removed.
	(find_insert_location): New. Determine where to insert a new stmt that
	is placed on a split edge.
	(bsi_commit_first_edge_insert): Use find_insert_location to determine
	where to link a stmt when splitting an edge.
	(merge_tree_blocks): When deleting a basic block, remove it from the
	dominance structure if it exists.
	* tree-dfa.c (add_stmt_operand): Don't rename local statics. Treat
	them just like globals.
	* tree-flow.h (struct var_ann_d): Add root_var_processed bit and
	root_index fields.
	* tree-ssa-dce.c (process_worklist): Mark conditions feeding PHI's as
	necessary as well.
	(remove_dead_phis): Add missing debug information.
	* tree-ssa-live.c (var_union): Handle combining partitions when one
	has a root_variable as a representative.
	(compact_var_map): Add comments and use flags.
	(init_root_var): Use new root_var fields in struct var_ann_d.
	(dump_root_var): Send output to specified file, not stderr.
	(dump_var_map): Remove dump_flag parameter & some grotesque debug info.
	* tree-ssa-live.h (VAR_ANN_ROOT_INDEX): Define.
	(VARMAP_NORMAL, VARMAP_NO_SINGLE_DEFS): Define flags for compact_var_map.
	(var_to_partition_to_var): Return NULL if not in a partition.
	(find_root_var): Use VAR_ANN_ROOT_INDEX.
	* tree-ssa.c (insert_copy_on_edge): Add listing info.
	(coalesce_ssa_name): Coalesce live-on-entry variables to their root.
	Coalesce partitions across abnormal edges.
	(assign_vars): Remove redundant initialization code. Handle root_vars
	which have already been coalesced to a partition.
	(rewrite_out_of_ssa): Add debug info & remove PHI nodes when processed.
	(rewrite_stmt): Don't redefine redundant expressions.

2003-05-08  Jeff Law  <law@redhat.com>

	* c-simplify.c (simplify_expr_stmt): Make sure to
	simplify the body of the EXPR_STMT.

	* tree-dfa.c (remove_decl): Accept new argument for the block
	to start the search.
	* tree-flow.h (remove_decl): Update prototype.
	* tree-cfg.c (remove_stmt): Pass the toplevel block to
	remove_decl.

	* tree-dfa.c (find_hidden_use_vars): No longer returns a value.
	Callers and prototype updated.  No longer need to look for
	nested functions, instead just mark any variables and
	parameters with DECL_NONLOCAL set as having hidden uses.

2003-05-08  Diego Novillo  <dnovillo@redhat.com>

	* version.c (version_string): Change format to show daily
	datestamp and merged date.

2003-05-07  Jeff Law  <law@redhat.com>

	* tree-cfg.c (remove_useless_stmts_and_vars): Do not remove
	the toplevel BIND_EXPR for an inlined function.

	* tree-dfa.c (find_hidden_use_vars): Look at the size of
	VAR_DECLs, not the size of ARRAY_TYPES.  Also make sure
	to reset *inside_vla to its original value when done
	processing any particular VAR_DECL.

2003-05-06  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_if_stmt): Warn if
	-Wunreachable-code is given and the conditional is always
	true or always false.

	* expr.c (expand_expr): Don't try to expand FUNCTION_DECL
	nodes when processing BIND_EXPR_VARS.

	* varasm.c (output_constant_def_contents): Re-use the
	label when emitting a label for mudflap.

	Disable the following patch:

	2003-04-30  Steven Bosscher  <steven@gcc.gnu.org>

		* ggc-page.c (TREE_EXP_SIZE): Define.
		(extra_order_size_table): New entry for expr trees with
		two operands.

2003-05-06  Jeff Law  <law@redhat.com>

	* tree-cfg.c (make_exit_edges): Fix handling of blocks which
	end with calls.

	* tree-cfg.c (remove_useless_stmts_and_vars): Remove GOTO_EXPRs
	to the immediately following tree node.

	* tree-cfg.c (make_goto_expr_edges): Fix typo in comment.
	(remove_useless_stmts_and_vars): New function.
	* tree-flow.h (remove_useless_stmts_and_vars): Prototype.
	* tree-ssa.c (rewrite_out_of_ssa): After returning to normal
	form, call remove_useless_stmts_and_vars.

2003-05-02  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c (alias_get_name): Given unnamed result decls
	a name.
	(create_fun_alias_var): Use DECL_RESULT if available.

2003-05-02  Jeff Law  <law@redhat.com>

	* tree-inline.c (expand_call_inline): Avoid creating naked
	_DECL nodes for inlined functions which had NRV optimizations
	applied.

2003-05-02  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (build_tree_cfg): Update comment.
	(make_blocks): Don't skip over empty statements.
	Move exception handling code ...
	(compute_reachable_eh): ... here.
	(set_parent_stmt): Don't skip over empty statements.
	(bsi_remove): Don't return early on empty statements.
	Don't call STRIP_NOPS.
	(remove_stmt): Don't call STRIP_NOPS.
	Always compute the block holding the statement.
	After replacing the statement with an empty statement, add the
	empty statement to the block.
	(successor_block): Don't call STRIP_NOPS.
	(first_exec_stmt): Likewise.
	(first_exec_block): Don't return early for empty statements.
	(first_stmt): Don't test for NULL blocks.
	Reformat to improve legibility.
	(bsi_next_in_bb): Don't call STRIP_NOPS.
	Reformat to improve legibility.
	(set_bb_for_stmt): Don't ignore empty statements.

	* tree-dfa.c (get_stmt_operands): Don't call STRIP_NOPS.
	(create_stmt_ann): Don't abort on emtpy statements.
	Don't call STRIP_NOPS.
	(copy_stmt): Remove unused function.
	* tree-flow.h (copy_stmt): Remove prototype.

	* tree-flow-inline.h: Don't call STRIP_NOPS.
	Remove local variable 't'.
	(bsi_stmt): Don't return NULL_TREE for empty statements.
	Ignore error_mark_node.

	* tree-iterator.h (tsi_next): Don't call STRIP_NOPS.
	(tsi_stmt_ptr): Likewise.
	(tsi_stmt): Likewise.
	Don't return NULL_TREE for empty statements.

	* tree-pretty-print.c (dump_generic_node): Don't ignore empty
	statements.

	* tree-ssa-ccp.c (fold_stmt): Don't call STRIP_NOPS.
	* tree-ssa-dce.c (find_useful_stmts): Likewise.
	(remove_dead_stmt): Likewise.
	* tree-ssa.c (mark_def_sites): Likewise.
	(rewrite_out_of_ssa): Likewise.
	(rewrite_stmt): Likewise.

	* tree.c (make_ssa_name): Don't ignore empty statements.
	(body_is_empty): Fix comment.

2003-05-01  Jeff Law  <law@redhat.com>

	* tree-dfa.c (find_hidden_use_vars): Renamed from find_vla_decls.
	Now returns a value indicating if nested function was found.
	When nested functions are found, mark suitable variables as
	having hidden uses.
	(find_hidden_use_vars_r): Renamed from find_vla_decls_r.
	(compute_may_alias): Corresponding changes.  Handle
	multiple BLOCKs at the toplevel of a function.

2003-04-30  Diego Novillo  <dnovillo@redhat.com>

	* tree.c (build_empty_stmt): New function.
	* tree.h (IS_EMPTY_STMT): Define.
	(TI_EMPTY_STMT): Remove.
	(empty_stmt_node): Remove.
	Replace 'X = empty_stmt_node' with 'X = build_empty_stmt ()',
	and 'X == empty_stmt_node' with 'IS_EMPTY_STMT (X)' everywhere.
	(build_empty_stmt): Declare.

	* cp/cp-simplify.c (cp_simplify_stmt): Use IS_EMPTY_STMT.

	* java/java-tree.h (build_java_empty_stmt): Declare.
	* java/expr.c (build_java_empty_stmt): New function.
	* java/decl.c (java_init_decl_processing): Don't build empty_stmt_node.
	Replace 'X = empty_stmt_node' with 'X = build_java_empty_stmt ()',
	and 'X == empty_stmt_node' with 'IS_EMPTY_STMT (X)' everwhere.

2003-04-30  Jeff Law  <law@redhat.com>

	* tree-dfa.c (get_expr_operands): Do not ignore operands of an
	an ADDR_EXPR if it is a PARM_DECL or VAR_DECL.

	* tree-dfa.c (get_expr_operands): Look inside operands in
	a TREE_LIST.

2003-04-29  Diego Novillo  <dnovillo@redhat.com>

	* builtins.def (BUILTIN_CONSTANT_P): Mark as constant.

	* tree-dfa.c (get_expr_operands): Do not add VDEF operands for
	dereferenced pointers at call sites.
	* tree-ssa.c (assign_vars): Abort if we couldn't coalesce all the
	versions together.

2003-04-29  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (bsi_start): If there are no stmts in a block, use the
	context pointer to represent the basic block.
	(bsi_insert_after): Handle inserting into empty blocks better.
	(bsi_insert_before): Call bsi_insert_after to handle empty blocks.
	* tree-ssa.c (elim_create): Clear bitmap after its been processed
	instead of during loop.

2003-04-27  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-mudflap.o): Add dependency on $(TREE_DUMP_H).
	* c-decl.c (c_expand_body_1): Don't call simplify_function_tree
	after mudflap_c_function.
	Move mudflap instrumentation after SSA optimizers.
	* tree-dump.c (dump_files): Add entry for -fdump-tree-mudflap.
	* tree.h (enum tree_dump_index): Add TDI_mudflap.
	* doc/invoke.texi: Document -fdump-tree-mudflap.
	* tree-mudflap.c: Include tree-dump.h.
	(dump_file): New local variable.
	(dump_flags): New local variable.
	(mudflap_c_function): Call dump_begin, dump_end and dump_function.
	(mf_decl_cache_locals): Set DECL_CONTEXT for __mf_lookup_shift_l
	and __mf_lookup_mask_l to current_function_decl.
	(mf_offset_expr_of_array_ref): Likewise for __mf_index_X.
	(mf_build_check_statement_for): Re-implement to emit a proper
	STMT_EXPR.
	(mx_xfn_indirect_ref): Emit detailed debugging info if
	-fdump-tree-mudflap-details is given.
	(mudflap_enqueue_decl): Likewise
	* tree-optimize.c (optimize_function_tree): Don't check for
	-fmudflap.

2003-04-26  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (build_bc_goto): If the target label couldn't be
	found, emit an error message.

2003-04-25  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-live.c (compact_var_map): Add parameter to exclude variables
	with a single SSA version.
	(init_root_var): Allow that a var_map might not be compacted yet.
	* tree-ssa-live.h (compact_var_map): Change Prototype.
	* tree-ssa.c (rewrite_out_of_ssa): When coalescing, don't include single
	reference variables during the compaction.

2003-04-25  Jeff Law  <law@redhat.com>

	* tree-optimize.c (optimize_function_tree): Simplify slightly.

2003-04-25  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa.c (struct _elim_graph): Change type of fields
	'pred' and 'succ' to be bitmaps instead of sbitmaps.
	Update all uses.

2003-04-25  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (linearize_cond_expr): Reformat.
	* tree-dfa.c (get_expr_operands): Check for read-only
	status the dereferenced argument pointer, not the pointer
	itself.
	(add_stmt_operand): Always consider global variables as
	virtual operands.

2003-04-24  Jason Merrill  <jason@redhat.com>

	* gimplify.c (simplify_cond_expr): Avoid redundant gimplification.

	Add TREE_VEC of case labels to the SWITCH_EXPR during gimplification.
	* tree.def (CASE_LABEL_EXPR): Add an operand for the LABEL_DECL.
	* tree.h (SWITCH_LABELS, CASE_LABEL): New macros.
	* c-simplify.c (c_simplify_stmt) <CASE_LABEL>: Create LABEL_DECL here.
	* expr.c (expand_expr) <CASE_LABEL_EXPR>: Not here.
	* gimplify.c (gimplify_ctx): Add case_labels field.
	(gimplify_switch_expr, gimple_add_case_label): New fns.
	(simplify_expr): Use them.

2003-04-24  Andrew MacLeod  <amacleod@redhat.com>

	* tree-flow.h (processed_out_of_ssa): Rename to out_of_ssa_tag.
	* tree-ssa-live.c (register_ssa_partition): Add variable to partition.
	(change_partition_var): Use out_of_ssa_tag.
	(create_ssa_var_map): Add all uses, defs and PHI elements to partition.
	(new_tree_live_info): Create a live range info structure.
	(delete_tree_live_info): Free storage.
	(live_worklist): Fill in the live range info for a variable for the
	blocks between the def and all the blocks containing uses.
	(set_if_valid): Set partition bit if variable is in a partition.
	(add_livein_if_notdef): Set live on entry bit for a var's partition
	if a definition has not been seen.
	(calculate_live_on_entry): Create partition live on entry bitmaps for
	all basic blocks .
	(calculate_live_on_exit): Calculate live on exit information for each
	basic block.
	(init_root_var): Initialize and fill in a root_var structure.
	(remove_root_var_partition): remove a partition from a root_var list.
	(delete_root_var): Free storage.
	(dump_root_var): Display root_var summary.
	(dump_var_map): Show extra info for ssa name versions.
	* tree-ssa-live.h (NO_PARTITION): Define.
	(register_ssa_partition): Remove.
	(partition_to_var): Use partition_find after decompressing.
	(var_to_partition): Return NO_PARTITION if var is not in a partition.
	(struct tree_live_info_d): Define live range info structure.
	(partition_is_global): Return 1 if used outside a basic block.
	(live_entry_blocks): Return bitmap over blocks that partition is live
	on entry to.
	(live_on_exit): Return bitmap of partitions live on exit from a block.
	(struct root_var_d): Define a root_var structure.
	(ROOT_VAR_NONE): Define.
	(num_root_vars): Number of variables in root_var object.
	(root_var): Return variable for a root_var index.
	(first_root_var_partition): Return first partition for a root_var.
	(next_root_var_partition): Get next partition for a root_var.
	(find_root_var): Find root_var index for a specific partition.
	* tree-ssa.c (eliminate_extraneous_phis): Remove.
	(set_if_valid): Set partition bit if variable is in a partition.
	(add_conflicts_if_valid): Add conflict between variable and all
	related partitions set in a bitvector.
	(coalesce_ssa_name): Create a conflict graph and coalesce all
	partitions which don't conflict and are related by the same root_var.
	(assign_vars): Use a root_var object, and assign different real
	variables to all partitions.
	(rewrite_out_of_ssa): Call compact_var_map() once, and don't call
	eliminate_extraneous_phis.

2003-04-23  Daniel Berlin  <dberlin@dberlin.org>

	* tree-flow.h (create_global_var): Add prototype.

	* tree-dfa.c (create_global_var): Externalize.

	* tree-alias-common.c: Set DECL_CONTEXT on our temp alias vars.
	(call_may_clobber): Make a copy of this function, since our version
	will be slightly different soon.
	(create_alias_vars): We need global_var, so create it if necessary.

2003-04-23  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (do_proper_save): Remove old code, since the new
	insertion code works okay.
	(pre_expression): Use new_rename_1, it removes a *lot* of useless
	saves.

2003-04-23  Jeff Law  <law@redhat.com>

	* gimplify.c (simplify_target_expr): Make sure to simplify
	the cleanup too.

	* tree-ssa.c (struct def_blocks_d): Add new field phi_insertion_points.
	(compute_global_livein): Accept varray rather than bitmaps.  Callers
	updated.  Rewrite to compute global life information for all the
	objects in the varray in parallel.
	(insert_phis_for_deferred_variables): New function.
	(insert_phi_nodes_for): New argument DEF_MAPs.  When an object
	crosses the threshold for using fully pruned PHI insertions,
	push it on the def_maps varray for deferred processing.
	(insert_phi_nodes): Initialize def_maps.  Pass it to
	insert_phi_nodes_for.  Drain the def_maps varray as it grows.
	Also drain any residual objects in def_maps.  Zero def_maps
	when complete.

2003-04-21  Jeff Law  <law@redhat.com>

	* tree-cfg.c (find_contained_blocks_and_edge_targets): New function.
	(try_finallys): New varray used during edge creation.
	(make_edges): Initialize try_finallys varray.  After creating
	all the "normal" edges, go back and create the special edges
	for the try-finally blocks.
	(make_ctrl_stmt_edges): Create edges for the EH nodes.  Also
	make sure to build the try-finally stack.
	(make_exit_edges): Create edges from calls which may throw
	to any directly reachable exception handlers.
	(is_ctrl_altering_stmt): Statements which may throw alter
	flow control.

	* tree-cfg.c: Include except.h.
	(eh_stack): New file-scoped varray.
	(build_tree_cfg): Initialize eh_stack.
	(make_catch_expr_blocks): New function.
	(make_try_expr_blocks, make_eh_filter_expr_blocks): Likewise.
	(make_blocks): Call new functions as needed.  When ending a block
	due to a statement that may throw, compute the reachable exception
	handlers and store it in the statement's annotation.
	(is_ctrl_stmt): Handle EH nodes.
	(stmt_ends_bb_p): Likewise.
	* tree-flow.h (stmt_ann_d): Add new field reachable_exception_handlers.

	* except.c (check_handled): No longer static.
	* except.h (check_handled): Prototype.

	* c-simplify.c (c_build_bind_expr): Revert change from earlier today.

	* c-common.h (find_reachable_label): Prototype.
	* c-semantics.c (find_reachable_label): No longer static.
	* c-simplify.c (c_build_bind_expr): Avoid creating unnecessary
	BIND_EXPRs.
	(simplify_cleanup): Avoid creating unnecessary TRY_CATCH_EXPRs
	or TRY_FINALLY_EXPRs.
	(simplify_if_stmt): If the condition is constant and the
	unexecuted arm has no reachable code, then just emit
	the executed arm.

2003-04-18  Sebastian Pop  <s.pop@laposte.net>

	* cfghooks.h, cfghooks.c: New files.
	* Makefile.in (BASIC_BLOCK_H): Depends on cfghooks.h.
	(OBJS): Add cfghooks.o.
	(tree-optimize.o): Depends on cfgloop.h.
	(cfghooks.o): New rule.
	* basic-block.h (split_edge): Rename to rtl_split_edge.
	(tree_split_edge): Declare.
	(create_bb): Declare extern here.
	(verify_flow_info): Rename to rtl_verify_flow_info.
	(tree_verify_flow_info): Declare.
	(cfghooks.h): Included here.
	* cfgloop.c (tree.h, tree-flow.h): Included.
	(make_forwarder_block): Renamed to rtl_make_forwarder_block.
	(tree_make_forwarder_block): New static function.
	(blocks_headers): Declared static.
	(HEADER_BLOCK): Use blocks_headers instead of bb's .aux field.
	(redirect_edge_with_latch_update, make_forwarder_block,
	canonicalize_loop_headers): Don't allocate .aux, but makes grow
	the blocks_headers array.
	(canonicalize_loop_headers): Register tree_make_forwarder_block
	into the tree_cfg_hooks and rtl_make_forwarder_block into the
	rtl_cfg_hooks structure.
	(canonicalize_loop_headers): Initialize/free the blocks_headers
	array rather than the bb's .aux field.
	* cfgloopmanip.c (loop_split_edge_with_NULL): New static function.
	(remove_path, force_single_succ_latches):
	Call loop_split_edge_with_NULL instead of loop_split_edge_with.
	* cfgrtl.c (split_block): Update the comment.
	(split_edge): Renamed rtl_split_edge.
	(verify_flow_info): Renamed rtl_verify_flow_info.
	* loop-init.c (loop_optimizer_init, loop_optimizer_finalize):
	Execute code following the value of cfg_level.
	* toplev.c (rest_of_compilation): Call rtl_register_cfg_hooks.
	* tree-cfg.c (create_bb): Declared extern.
	(build_tree_cfg): Call tree_register_cfg_hooks.
	(make_edges, make_exit_edges): Remove the use of EDGE_FALLTHRU.
	(bsi_commit_first_edge_insert): Use split_edge.
	(tree_split_edge, tree_verify_flow_info): New functions.
	* tree-optimize.c (cfgloop.h): Included.
	(optimize_function_tree): Add #if 0'ed calls to
	loop_optimizer_init and loop_optimizer_finalize.

2003-04-16  Jeff Law  <law@redhat.com>

	* Makefile.in (tree-ssa.o): Depend on langhooks.h.
	(tree-dfa.o, tree-cfg.o): Likewise.
	* tree-cfg.c: Include langhooks.h
	(dump_tree_cfg): Revamp how we get the current function's name
	to not rely on current_function_name (and implicitly cfun).
	(dump_cfg_stats, tree_cfg2dot): Likewise.
	* tree-dfa.c: Include langhooks.h
	(dump_immediate_uses): Revamp how we get the current function's name
	to not rely on current_function_name (and implicitly cfun).
	(dump_dfa_stats, dump_alias_info): Likewise.
	* tree-ssa.c: Include langhooks.h
	(dump_tree_ssa): Revamp how we get the current function's name
	to not rely on current_function_name (and implicitly cfun).

	* tree-cfg.c (make_loop_expr_blocks): When determining the value for
	NEXT_BLOCK_LINK, correctly handle empty statement nodes at the
	end of the tree.
	(make_cond_expr_blocks, make_switch_expr_blocks): Likewise.
	(make_bind_expr_blocks): Likewise.

	* gimplify.c (keep_function_tree_in_gimple_form): Move check of
	flag_disable_simple here.  Include flags.h.
	* Makefile.in (gimplify.o): Depends on flags.h
	* c-decl.c (c_expand_body_1): No longer check flag_disable_simple.
	* tree-inline.c (copy_body_r): Avoid creating non-gimple code
	when inlining a function where the RESULT_DECL's initialization
	is not on the RETURN_EXPR.

2003-04-15  Jeff Law  <law@redhat.com>

	* tree-flow.h (struct var_ann_d): Renamed is_vla_decl field to
	has_hidden_use.
	(has_hidden_use, set_has_hidden_use): Renamed from is_vla_decl
	and set_vla_decl.
	* tree-flow-inline.h (has_hidden_use): Renamed from is_vla_decl.
	Updated to use "has_hidden_use" instead of "is_vla_decl" field.
	(set_has_hidden_use): Renamed from set_vla_decl.
	Updated to use "has_hidden_use" instead of "is_vla_decl" field.
	* tree-dfa.c (dump_variable): Corresponding changes.
	(find_vla_decls_r): Likewise.
	* c-simplify.c (simplify_decl_stmt): Likewise.
	* tree-ssa-dce.c: Likewise.

2003-04-09  Jeff Law  <law@redhat.com>

	* tree-dfa.c (struct alias_set_d, field tag_sym_set): Remove
	unused field.
	(register_alias_set): Rework to avoid incorrect coalescing of
	entries.  Fix memory leak.  No longer set field tag_sym_set.
	(get_expr_operands): ADDR_EXPR expressions may have interesting
	operands in some cases.

2003-04-09  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (simplify_expr): Handle VECTOR_CST nodes.
	* tree-cfg.c (make_blocks): Ignore empty statement containers.
	Create a basic block before processing containers that only have
	empty statements.
	(make_loop_expr_blocks): Use the container instead of the statement
	when setting NEXT_BLOCK_LINK.
	(make_cond_expr_blocks): Likewise.
	(make_switch_expr_blocks): Likewise.
	(make_bind_expr_blocks): Likewise.
	(successor_block): If the last statement of the block is the empty
	statement, use its container to get NEXT_BLOCK_LINK.
	(stmt_starts_bb_p): Return false if the statement is NULL.
	* tree-pretty-print.c (dump_generic_node): Handle VECTOR_CST nodes.
	* tree-simple.c (is_simple_const): Accept VECTOR_CST as constants.
	* objc/objc-lang.c (LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P):
	Define.

2003-04-06  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (remove_bb): Call ssa_remove_edge.
	(cleanup_cond_expr_graph): Likewise.
	(cleanup_switch_expr_graph): Likewise.
	(disconnect_unreachable_case_labels): Likewise.
	(merge_tree_blocks): Likewise.
	Update PHI nodes at BB2's successor.
	(dump_tree_bb): Show PHI nodes in the block.
	* tree-dfa.c (add_phi_arg): Update comment.
	(remove_phi_arg_num): New function.
	(remove_phi_arg): Call it.
	Move from tree-ssa.c.
	(remove_phi_node): Move from tree-ssa.c.
	* tree-flow.h (ssa_make_edge): Declare.
	(ssa_remove_edge): Declare.
	* tree-pretty-print.c (dump_generic_node): Show block where PHI
	arguments are coming from.
	* tree-ssa-dce.c (pdom_info): New local variable.
	(remove_dead_stmts): Initialize it and free it at the end.
	(remove_conditional): New function.
	(remove_dead_stmt): Call it.
	* tree-ssa.c (eliminate_phi): If the edge index is -1, abort
	compilation.
	(ssa_remove_edge): New function.
	(ssa_make_edge): New function.

2003-04-06  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (push_bsi): New. Push a block_stmt_iterator onto a stack.
	(pop_bsi): New. Pop a block_stmt_iterator off a stack.
	* tree-flow-inline.h (struct bsi_list_d): Block iterator stack struct.
	(new_bsi_list): Start a new bsi stack.
	(empty_bsi_stack): Is stack empty.
	(FOR_EACH_BSI_IN_REVERSE): Macro for processing bsi's in reverse.
	(FOR_EACH_STMT_IN_REVERSE): Macro for processing stmt's in reverse.

2003-04-06  Andreas Jaeger  <aj@suse.de>

	* treelang/treetree.c (tree_code_create_function_initial): Replace
	calls to non-existent function annotate_with_file_line_column with
	calls to annotate_with_file_line.
	(tree_code_create_variable): Likewise.

2003-04-05  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (get_expr_operands): Do not clobber readonly operands
	in CALL_EXPRs.
	(find_vars_r): Likewise.
	(add_indirect_ref_var): When creating new INDIRECT_REF variables,
	copy the readonly attribute from the variable's type.

2003-04-05  Diego Novillo  <dnovillo@redhat.com>

	* tree.c (copy_node): Never copy tree annotations.

2003-04-05  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (visit_cond_stmt): Don't short circuit evaluation
	of UNDEFINED conditional expressions.

2003-04-04  Andrew MacLeod  <amacleod@redhat.com>

	* Makefile.in : Add tree-ssa-live.c and tree-ssa-live.h files.
	* tree-ssa.c (struct _var_map, create_var_map, delete_var_map,
	var_from_partition, get_var_partition, mapped_var_from_ref,
	compact_var_map, dump_tree_partition, set_partition_for_var,
	set_var_mapping, create_var_partition): Remove.
	(create_temp): Allow temps to be created from SSA_NAME vars as well.
	(eliminate_name, eliminate_build, elim_backward, elim_create,
	eliminate_phi): Use new var map interface.
	(coalesce_ssa_name): New. Coalesce ssa_name ranges together.
	(assign_vars): Assign real variables to ssa_name partitions.
	(rewrite_out_of_ssa): Use new varmap partition and routines.
	* tree-ssa-live.h: New file
	(var_map): Structure for variable map.
	(num_var_partitions): Number of partitions.
	(partition_to_var): Return variable for partition.
	(var_to_partition): Return partition variable is in.
	(var_to_partition_to_var): Return variable representing partition
	another variable is in.
	(register_ssa_partition): Initialize a partition element as used.
	* tree-ssa-live.c: New file.
	(init_var_map): Initialize a var_map.
	(delete_var_map): Free storage for a var_map.
	(var_union): Combine 2 partitions.
	(compact_var_map): Reduce the number of partitions in a var_map.
	(change_partition_var): Assign a specific var to a partition.
	(create_ssa_var_map): Initialize a var_map with referenced variables.
	(dump_var_map): Debug output for a var_map.

2003-04-03  Diego Novillo  <dnovillo@redhat.com>

	* fold-const.c (fold_relational_hi_lo): Add missing comparison when
	folding comparisons to signed_max+1.

2003-04-02  Jason Merrill  <jason@redhat.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-inline.c (initialize_inlined_parameters): Cast argument
	types appropriately when emitting initialization assignments.

2003-04-01  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (PENDING_STMT, SET_PENDING_STMT): New Macros.
	(bsi_insert_on_edge): Rename to bsi_commit_first_edge_insert. Add an
	empty annotation record to the new basic_block.
	(bsi_commit_edge_inserts): New. Commit all pending edge inserts.
	(bsi_insert_on_edge): New. Add stmt to edge's pending insert list.
	* tree-flow-inline.h (phi_arg_from_edge): Return PHI index for an edge.
	(phi_element_for_edge): Return PHI element for an edge.
	* tree-flow.h (struct var_ann_d): Add auxiallary field and new
	bit 'processed_out_of_ssa'.
	* tree-ssa.c (_var_map): Structure for variable parition map.
	(struct _elim_graph): Elimination graph for out-of-ssa pass.
	(create_var_map): Create a new var_map.
	(delete_var_map): Delete a var_map.
	(var_from_parition): Return var for a specified partition.
	(get_var_partition): Return partition a var belongs to.
	(mapped_var_from_ref): Get root var for a var's partition.
	(compact_var_map): Re-map the partitions to make the list dense.
	(dump_var_parition): Print var_map.
	(set_partition_for_var): Associate a real var with a partition.
	(set_var_mapping): Associate an SSA version var with a real var.
	(create_var_partition): Create a partition for processing.
	(create_temp): Create a new temp variable for a partition.
	(insert_copy_on_edge): Insert a copy between variables on an edge.
	(new_elim_graph): Create a new elimination graph.
	(clear_elim_graph): clear an elimination graph.
	(delete_elim_graph): Delete an elimination graph.
	(eliminate_name, eliminate_build, elim_forward,
	elim_unvisited_predecessor, elim_backward, elim_create,
	eliminate_phi): Routines to implement Morgans PHI elimination algorithm.
	(eliminate_extraneous_phis): Eliminate PHI nodes which will never
	generate code.
	(rewrite_out_of_ssa): Use partitions and PHI elimination algorithm.

2003-04-01  Jeff Law  <law@redhat.com>

	* tree-cfg.c (make_blocks): Make sure the BIND_EXPR's subgraph
	actually ended in a statement before seeing of the statement should
	end a basic block.

	* tree-cfg.c (dump_tree_cfg): Avoid crashing when cfun is NULL.
	(tree_cfg2dot): Likewise.
	* tree-dfa.c (dump_immediate_uses): Likewise.
	* tree-pretty-print.c (dump_generic_node): Dump the EH_FILTER_FAILURE
	nodes attached to an EH_FILTER_EXPR.

	* tree-dfa.c (get_stmt_operands): Add cases for TRY_FINALLY_EXPR,
	TRY_CATCH_EXPR, CATCH_EXPR and EH_FILTER_EXPR.
	(get_expr_operands): Add case for EXC_PTR_EXPR.

	* tree-dfa.c (compute_may_aliases): Accept FNDECL as an argument.
	Use FNDECL instead of relying on CURRENT_FUNCTION_DECL.
	* tree-flow.h (compute_may_aliases): Update prototype.
	* tree-ssa.c (rewrite_into_ssa): Corresponding changes.

	* tree-inline.c (expand_calls_inline): Correctly handle EH_FILTER_EXPR.

2003-03-31  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (STRICT_WARN, STRICT2_WARN): Remove -Wtraditional.
	* timevar.def (TV_TREE_CLEANUP_CFG): Define.
	* tree-cfg.c (set_parent_stmt): Add documentation.
	(replace_stmt): New function.
	(merge_tree_blocks): New function.
	(remap_stmts): New function.
	(linearize_cond_expr): New function.
	(linearize_control_structures): New function.
	(cleanup_tree_cfg): Call it.
	Use new timevar TV_TREE_CLEANUP_CFG.
	(remove_bb): Update debugging message.
	Make sure that bb->head_tree_p and bb->end_tree_p exist before
	resetting their basic blocks.
	(remove_stmt): When removing a control flow expression, update
	basic block flags.
	(cleanup_control_flow): Make sure that the block contains
	statements.
	(last_stmt): Reformat for readability.
	(last_stmt_ptr): Return NULL if the block has no statements.
	* tree-flow-inline.h (parent_block): Check that the block is not
	empty.
	* tree-flow.h (bb_empty_p): Remove.
	* tree-inline.c (copy_tree_r): Do not copy empty_stmt_node.
	* tree-ssa-dce.c (tree_ssa_dce): Call cleanup_tree_cfg.
	* tree.c (body_is_empty): New function.
	* tree.h (body_is_empty): Declare.

2003-03-31  Jeff Law  <law@redhat.com>

	* tree-ssa-ccp.c (simulate_block): Add abnormal edges out of a
	block to the edge worklist after simulating a block for the
	first time.  If the block has a single outgoing normal edge,
	add that edge to the worklist after simulating the block for
	the first time.

2003-03-31  Frank Ch. Eigler  <fche@redhat.com>

	* gcc.c (MFLIB_SPEC): Remove -ld.
	(MFWRAP_SPEC): Remove dlopen wrapping.

2003-03-28  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa.c (rewrite_block): Add new argument 'eq_expr_value'.
	Update all users.
	If 'eq_expr_value' is given, use it to register a new
	value for the variable given on the LHS.
	If the block ends in a conditional expression of the form 'X == Y',
	propagate 'X = Y' into the THEN_CLAUSE.
	(MAY_COPYPROP_P): Define.
	(rewrite_stmt): Call it.
	(register_new_def): Fix comment.
	(get_eq_expr_value): New function.

2003-03-28  Diego Novillo  <dnovillo@redhat.com>

	* basic-block.h (BB_COMPOUND_ENTRY): Remove.  Update all users
	everywhere.
	* tree-cfg.c: Minor fixes to various comments.
	* tree-optimize.c (optimize_function_tree): Dump optimized function
	after SSA->normal conversion.

2003-03-26  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c:  Implement open64 renaming algorithm.
	(subst_phis): New function.
	(generate_expr_as_of_bb): Ditto.
	(new_rename_1): Ditto.
	(process_delayed_rename): Ditto.
	(do_proper_save): Use bsi_* functions for insertion, don't remove
	old code quite yet, haven't fully tested.
	Also add argument that says whether to insert before use or after use.
	(defs_y_dom_x): Factor through injuries properly.
	(defs_match_p): Ditto.
	(phi_opnd_from_res): Attempt to fix, and remove useless argument.
	(reset_can_be_avail): Fix broken condition that would cause infinite
	loop.
	(update_old_new): #if 0 updating of bb heads.
	(finalize_1): We occasionally get 5 + a rather than a + 5, so we
	need to make sure 5 is a DECL before trying to get a reaching def.
	(repair_use_injury): If we couldn't find a reaching def, we don't need
	to repair it.
	(assign_new_class): Only push to stack2 if it exists (so we can
	share this function in both rename implementations).
	(create_ephi_node): Add argument that says whether to add ephi
	to block or not (we create them sometimes for validation only).
	(tree_perform_ssapre): Skip expressions without any uses.

	* tree.h: Add EREF_DELAYED_RENAME.
	(struct tree_eref_common): Add delayed_rename bit.

2003-03-25  Diego Novillo  <dnovillo@redhat.com>

	* tree-simple.c: Use tree codes to document grammar for relational
	operators &&, || and ^.

2003-03-25  Diego Novillo  <dnovillo@redhat.com>

	* cfg.c (dump_edge_info): Add labels for EDGE_TRUE_VALUE,
	EDGE_FALSE_VALUE and EDGE_EXECUTABLE.
	* tree-cfg.c (dump_tree_bb): Change formatting.  Show all
	statements in the block.
	* tree-simple.c: Update documentation for GIMPLE conditional
	expressions.

2003-03-24  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (get_expr_operands): If there are no call clobbered
	variables, don't create a VDEF for GLOBAL_VAR at clobbering
	CALL_EXPRS.
	* tree-flow.h (fold_stmt): Declare.
	* tree-ssa-ccp.c (fold_stmt): Change to extern declaration.
	* tree-ssa.c (rewrite_stmt): Call it.

2003-03-22  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (gtype-desc.o): Add dependency on $(TREE_FLOW_H).

	* tree-dfa.c (struct alias_set_d): Add field 'num_elements'.
	(struct walk_state): Move declaration earlier in the file.
	(create_global_var): New local function.
	(num_referenced_vars, num_aliased_objects): Change type to
	'size_t'.  Update all users.
	(aliased_objects, aliased_objects_base, aliased_objects_aliase_set):
	Mark for garbage collection.
	(num_call_clobbered_vars, call_clobbered_vars): New global
	variable.
	(get_expr_operands): For CALL_EXPRs, add a VUSE or VDEF reference
	for every pointer argument.  If the call may clobber, add a VDEF,
	otherwise add a VUSE.
	If the call may clobber, add VDEF for GLOBAL_VAR.
	(dump_variable): Show whether the variable is call clobbered.
	(dump_dfa_stats): Show call clobbered variables.
	(compute_may_aliases): Minor formatting changes.
	(compute_alias_sets): If the function makes clobbering calls, add
	GLOBAL_VAR as an alias to every call-clobbered variable.
	Remove alias sets that have exactly one element.
	(register_alias_set): Set 'num_elements' to zero for every newly
	created alias set.
	(find_alias_for): Don't make a second call to add_may_alias to make
	alias tags alias themselves.  It's redundant.
	Increment 'num_elements' when adding a new alias to an alias set.
	(may_alias_p): Don't handle GLOBAL_VAR.
	Check for structure aliasing when either PTR or VAR are a
	structure.  Don't do it only when both are structures.
	(dump_alias_info): Show all aliases of each variable.
	(find_vars_r): When processing a CALL_EXPR node, set
	walk_state->is_store if the function may clobber and create a
	reference to GLOBAL_VAR.
	(add_indirect_ref_var): Change type of second argument from 'void *'
	to 'struct walk_state *'.  Update all users.
	(add_referenced_var): Likewise.  If a potentially aliased variabe
	is not declared 'const', add it to the list of call clobbered
	variables.

	* tree-flow.h (struct var_ann_d): Add field 'is_call_clobbered'.
	Change type of field 'uid' to size_t.  Update all users.
	(stmt_ann_d): Add field 'makes_clobbering_call'.
	(next_tree_ref_id): Remove unused variable.
	(call_clobbered_vars): Declare.
	(num_call_clobbered_vars): Declare.
	(call_clobbered_var): New inline function.

	* tree-ssa-ccp.c (visit_phi_node): If the LHS of a PHI node is
	volatile, mark the PHI node VARYING without checking its arguments.
	(visit_assignment): Likewise.
	(set_value): Remove.  Update all users.
	(likely_value): If the statement makes aliased loads or has
	volatile operands, consider it VARYING.
	(get_default_value): If a variable is volatile, consider it
	VARYING.

	* tree-ssa.c (init_tree_ssa): Initialize num_call_clobbered_vars
	and call_clobbered_vars.
	Do not create GLOBAL_VAR.  Set it to NULL_TREE.
	Increase initial size for various hash tables.
	(delete_tree_ssa): Reset num_call_clobbered_vars and
	call_clobbered_vars.
	(get_reaching_def): Rename from currdef_for.  Update all users.
	Always create default definitions for variables that need them.
	Callers that use to call currdef_for with the second argument set
	to false now call get_value_for.
	(htab_statistics): New function.
	(dump_tree_ssa): Call it.
	(avail_expr_eq): Also compare VUSE operands.

2003-03-21  Jeff Law  <law@redhat.com>

	* tree-dfa.c: Revert vla changes from yesterday.
	(find_vla_decls_r): Do not look inside TYPE_DECLs.

2003-03-20  Jeff Law  <law@redhat.com>

	* gimplify.c (simplify_return_expr): Tighten condition for
	converting the RHS of a MODIFY_EXPR in a RETURN_EXPR to a
	simple_val.  Allow returning a RESULT_DECL directly.
	* tree-dfa.c (get_expr_operands): A RESULT_DECL can have
	interesting operands.
	(clobber_vars_r): Handle RESULT_DECLs.
	(compute_may_aliases): Initialize and free vla_htab.
	(find_vla_decls): Pass vla_htab to walk_tree.
	(find_vla_decls_r): Likewise.
	* tree.h (SSA_DECL_P): Accept RESULT_DECLs.

2003-03-19  Jeff Law  <law@redhat.com>

	* gimplify.c (simplify_return_expr): Only allow simple values
	on the RHS of a MODIFY_EXPR appearing in a RETURN_EXPR.
	* tree-cfg.c (make_exit_edges): We no longer need to look for
	CALL_EXPRs on the RHS of a MODIFY_EXPR inside RETURN_EXPRs.

2003-03-18  Andrew Macleod  <amacleod@redhat.com>

	* tree-cfg.c (make_blocks): Use append_stmt_to_bb. Check for NULL
	tsi_stmt when deciding whether to start a new block.
	(add_stmt_to_bb): Don't update the basic block end pointer.
	(append_stmt_to_bb): New. Add stmt and update the BB end pointer.
	(first_stmt): Use only 1 return.
	(last_stmt): Modified to use bsi_last().
	(last_stmt_ptr): Modified to use bsi_last().
	(bsi_last): New. Return an iterator to the last stmt in a block.
	(bsi_from_tsi): Fix bug which wouldn't set the context properly when
	within a nested BIND_EXPR.
	(bsi_update_from_tsi): Insert helper which is more efficient than
	bsi_from_tsi().
	(bsi_link_after): link in a new stmt and update the basic block
	data structures.
	(bsi_insert_after): Insert a new stmt into a block.
	(bsi_insert_before): Insert a new stmt into a block.
	(bsi_insert_on_edge): Insert a new stmt on an edge.
	* tree-flow-inline.h (is_label_stmt): Return true if stmt can be a
	target of a control transfer.
	* tree-flow.h (is_label_stmt, bsi_last): New prototypes.

2003-03-12  Jeff Law  <law@redhat.com>

	* c-simplify.c (simplify_switch_stmt): Save the type of the original
	condition in TREE_TYPE (SWITCH_EXPR (...)).  Annotate the SWITCH_EXPR
	with file/line information.
	* expr.c (expand_expr, case SWITCH_EXPR): Use expand_end_case_type.
	* tree.def (SWITCH_EXPR): Document meaning of TREE_TYPE field of
	the SWITCH_EXPR.

	* c-simplify.c (simplify_block): Set the current line number to
	the line associated with the end of the block.

	* c-decl.c (finish_function): No longer save/restore the
	current filename or linenumber around simplification.  Instead
	save/restore it around inlining.
	(c_expand_body_1): Save/restore current filename and linenumber
	around expansion of trees into RTL.
	* gimplify.c (simplify_function_tree): Make the current file/line
	number match the non-gimple code at the end of a function.

	* tree-cfg.c: Include toplev.h.
	(remove_bb): Warn about unreachable code.

	* cfgrtl.c (verify_flow_info): Ignore EDGE_EXECUTABLE, it's for
	the CCP optimizer only.

	* ssa.c (convert_to_ssa): Use last_basic_block, not n_basic_blocks.

2003-03-11  Jeff Law  <law@redhat.com>

	* builtins.c: Fix minor comment typo.
	(expand_builtin_strcmp, expand_builtin_strncmp): Remove.
	(expand_builtin_strcat, expand_builtin_strncat): Likewise.
	(expand_builtin_strspn, expand_builtin_strcspn): Likewise.
	(expand_builtin_strcopy, expand_builtin_strstr): Likewise.
	(expand_builtin_strpbrk, expand_builtin_strchr): Likewise.
	(expand_builtin_strrchr, expand_builtin_fputs): Likewise.
	(simplify_builtin_memcmp, simplify_builtin_strcmp): New functions.
	(simplify_builtin_strpbrk, simplify_builtin_strstr): Likewise
	(simplify_builtin_strchr, simplify_builtin_strrchr): Likewise
	(simplify_builtin_strcpy, simplify_builtin_strncpy): Likewise
	(simplify_builtin_strncmp, simplify_builtin_strcat): Likewise
	(simplify_builtin_strncat, simplify_builtin_strspn): Likewise
	(simplify_builtin_strcspn, simplify_builtin_fputs): Likewise
	(expand_builtin_memcmp): Use simplify_builtin_memcmp.
	(simplify_builtin): New function
	(expand_builtin): Use simpify_builtin to collapse several common
	cases together.
	* gimplify.c (simplify_call_expr): Accept new argument.  All
	callers updated.  Call simplify_builtin to try and simplify builtin
	function calls before we simplify their arguments.
	* tree.h (simplify_builtin): Prototype.

2003-03-11  Jeff Law  <law@redhat.com>

	* timevar.def (TV_TREE_SSA_TO_NORMAL): New timevar.
	* tree-cfg.c (remove_stmt): Also remove special annotations
	on RHS of MODIFY_EXPR statements.
	* tree-dfa.c (create_stmt_ann): Update comments.  Fix formatting.
	(compute_may_aliases): Make sure timevar encloses entire routine.
	* tree-ssa.c (rewrite_out_of_ssa): Enclose with a timevar.
	(remove_annotations_r): Avoid walking into subtrees of anything
	except container nodes.  Remove the special annotation on the
	RHS of MODIFY_EXPRs.

2003-03-10  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mx_xfn_indirect_ref): Allow unfolded "& ptr->field"
	constructs to pass uninstrumented.  Remove TREE_ADDRESSABLE settings.
	Keep array accesses to non-ADDRESSABLE objects uninstrumented.  Update
	__MF_TYPE_* constants for __mf_register calls.

2003-03-10  Jeff Law  <law@redhat.com>

	* c-decl.c (c_expand_body_1): Update comments relating to
	re-simplification after mudflap instrumentation.  Avoid
	unnecessary simplification of the function tree.
	* gimplify.c (keep_function_tree_in_gimple_form): New function.
	* tree-inline.c: Include tree-iterator.h and tree-simple.h
	(struct inline_data): Add new TSI field.
	(copy_body_r): Keep tree in gimple form when transforming a
	RETURN_EXPR into a MODIFY_EXPR and GOTO_EXPR.
	(initialize_inlined_parameters): Use MODIFY_EXPR, not INIT_EXPR
	for initialization of inlined parameters.
	(expand_call_inline): Save and restore the TSI around the
	call to expand_calls_inline.  Keep the tree in gimple form
	when replacing a CALL_EXPR with a BIND_EXPR for the inlined
	body.
	(expand_calls_inline): Revamp to provide the current TSI to
	expand_call_inline when we're working with gimple form.
	* Makefile.in (tree-inline.o): Update dependencies.
	* tree.h (keep_function_tree_in_gimple_form): Prototype.

2003-03-10  Andrew MacLeod  <amacleod@redhat.com>

	* Makefile.in (tree.o): Add tree-iterator.h dependancy.
	* sbitmap.c (sbitmap_realloc): Grow a sbitmap structure.
	* sbitmap.h (sbitmap_realloc): New Prototype.
	* tree-cfg.c (remove_bb): Use new format for bsi_remove.
	(bsi_remove): Update iterator to refer to the next stmt.
	(bsi_prev): Implement previous stmt routine.
	(bsi_from_tsi): Create a block iterator from a tree iterator.
	* tree-flow-inline.h (bsi_prev): Remove.
	(tsi_from_bsi): Create a tree iterator from a block iterator.
	* tree-flow.h (bsi_prev,bsi_remove): Update prototypes.
	(bsi_from_tsi, tsi_from_bsi, bsi_insert_*): New prototypes.
	(bsi_iterator_update): New enum type.
	* tree-iterator.h (tree_stmt_anchor, tsi_iterator_update): New type.
	(tsi_link_before, tsi_link_after, tsi_delink, tsi_new_stmt_list,
	tsi_stmt_list_head): New prototypes.
	* tree-ssa-dce.c (remove_dead_stmts): Update removal loop to allow
	that remove_dead_stmt update's the iterator.
	(remove_dead_stmt): Use a pointer to the iterator since bsi_remove
	requires it.
	* tree.c (tsi_link_before): New function to link a stmt before an
	iterator.
	(tsi_link_after): New function links stmt after an iterator.
	(tsi_delink): Removes a stmt from a list.
	(tsi_new_stmt_list): New function to begin a new stmt list.
	(tsi_stmt_list_head): New function to get the first stmt in a list.

2003-03-07  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (remove_stmt): Don't assume that the statement is in
	SSA form.

	* tree-flow.h (dump_tree_ssa_stats): Declare.
	(debug_tree_ssa_stats): Declare.
	(stmt_ann_d): Add new statement flags 'makes_aliased_loads',
	'makes_aliased_stores', and 'has_volatile_ops'.
	* tree-dfa.c (add_stmt_operand): Set new statement flags accordingly.

	* tree-pretty-print.c (dump_generic_node): Various cosmetic changes
	to the rendering of some expressions.

	* tree-ssa.c (struct var_value_d): Rename from struct currdef_d.
	Rename field 'currdef' to 'value'.  Update all users.
	(avail_exprs): New local hash table.
	(const_and_copies): New local hash table.
	(struct ssa_stats_d): Declare.
	(ssa_stats): New local variable.
	(rewrite_into_ssa): Deallocate avail_exprs and const_and_copies
	after renaming.
	Call dump_tree_ssa_stats() if -fdump-tree-ssa-stats is given.
	(rewrite_block): Document the renaming process.
	Add new local stack block_avail_exprs to keep track of expressions
	made available in this block and its children.
	(rewrite_stmts): Move body inside rewrite_block.
	(dump_tree_ssa_stats): New function.
	(debug_tree_ssa_stats): New function.
	(get_def_blocks): New function.
	(insert_phi_nodes_for): Call it.
	(rewrite_stmt): Add support for keeping track of copies, constants
	and globally redundant expressions.
	(rewrite_operand): If a pointer has been copy propagated into
	another one, rewrite INDIRECT_REF nodes of the original pointer to
	refer to the new one.
	(register_new_def): Add new argument 'var' indicating which
	variable is this new definition for.  Update all users.
	(update_indirect_ref_vuses): New function.
	(update_pointer_vuses): New function.
	(init_tree_ssa): Set variable 'ssa_stats' to zero.
	Allocate memory for 'avail_exprs' and 'const_and_copies'.
	(currdef_for): Don't mark inline.
	Call get_value_for and set_value_for.
	(set_currdef_for): Remove.  Update all users.
	(var_value_hash): Rename from currdef_hash.  Update all users.
	(var_value_eq): Rename from currdef_eq.  Update all users.
	(get_value_for): New function.
	(set_value_for): New function.
	(lookup_avail_expr): New function.
	(avail_expr_hash): New function.
	(avail_expr_eq): New function.
	(get_def_blocks_for): New function.
	(var_is_live): New function.

2003-03-06  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (likely_value): Don't assume CONSTANT if the
	statement has virtual uses.

2003-03-05  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (opf_none, opf_is_def, opf_force_vop, opf_ignore_bp):
	New flags to alter the behavior of add_stmt_operand.
	(get_expr_operands): Change operand IS_DEF with FLAGS.  Update all
	users.
	When adding a VUSE for pointer dereferences in function arguments,
	don't add a superfluous VUSE for the base pointer.
	(add_stmt_operand): Remove operands IS_DEF and FORCE_VOP.  Add
	operand FLAGS.  Update all users.

2003-03-05  Jason Merrill  <jason@redhat.com>

	* c-pretty-print.c (do_niy): Only print operands of expressions.
	* tree-pretty-print.c: Likewise.

	* c-simplify.c (simplify_decl_stmt): Only simplify DECL_SIZE_UNIT.
	* gimplify.c (simplify_array_ref_to_plus): New fn.
	(simplify_array_ref): Use it.
	(build_addr_expr_with_type): Split out from build_addr_expr.
	(simplify_compound_lval): Break out an ARRAY_REF with non-constant
	element size.

2003-03-05  Frank Ch. Eigler  <fche@redhat.com>

	* gcc.c (MFWRAP_SPEC): Remove most --wrap entries.

2003-03-03  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (is_strred_cand): Temporarily disable strength
	reduction while working on bootstrapping.
	(requires_edge_placement): Reenable for now, until an insertion
	infrastructure exists that can handle critical edges.
	(count_stmts_in_bb): New function, used for verifying we do
	insertions properly.
	(update_old_new): Fix up bb heads as well.
	(do_proper_save): Handle single statement bb properly.
	Handle BB's contained in BIND_EXPRS.
	(code_motion): Count number of statements in bb before and after
	to make sure we don't screw up boundaries.
	(finalize_1): Ditto.
	(rename_2): Fix subtle rename bug.
	(phi_opnd_from_res): Do this the right way, by cloning the
	occurrence and modifying it, as every other PRE implementation
	does.
	(tree_perform_ssapre): Handle comparisons too (unary exprs
	currently disabled till load PRE is reimplemented).
	(reset_can_be_avail): Fix can_be_avail test.

2003-03-01  Diego Novillo  <dnovillo@redhat.com>

	* doc/invoke.texi: Fix typo.

2003-02-28  Aldy Hernandez  <aldyh@redhat.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (OBJS): Add tree-ssa-copyprop.o.
	(tree-ssa-copyprop.o): New rule.
	(tree-ssa-ccp.o): Add dependency on $(TREE_SIMPLE_H).

	* timevar.def (TV_TREE_COPYPROP): New timevar.
	* flags.h (flag_tree_copyprop): Declare.
	* toplev.c (flag_tree_copyprop): Define.
	(f_options): Add -ftree-copyprop.
	* tree.h (tree_dump_index): Add TDI_copyprop.
	* tree-dump.c (dump_files): Add entry for -fdump-tree-copyprop.
	* doc/invoke.texi: Document -ftree-copyprop and -fdump-tree-copyprop.

	* tree-ssa-copyprop.c: New file.
	* tree-flow.h (tree_ssa_copyprop): Declare.
	* tree-optimize.c (optimize_function_tree): Call it.
	* tree-dfa.c (add_vuse): Make extern.  Update all users.

	* tree-ssa.c (mark_def_sites): VUSEs are stored in a varray of trees.

2003-02-28  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mudflap_enqueue_decl): Ignore extern artificial
	variable declarations.

2003-02-27  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (get_stmt_operands): INIT_EXPR nodes cannot
	appear in GIMPLE form.  Don't handle them.
	(get_expr_operands): Likewise.
	(find_vars_r): Likewise.
	* tree-ssa-ccp.c (get_rhs): Likewise.
	(set_rhs): Likewise.
	* tree-ssa-pre.c (tree_perform_ssapre): Likewise.

2003-02-27  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (ccp_fold): Fold builtins by replacing and
	restoring their arguments.

2003-02-27  Jeff Law  <law@redhat.com>

	* tree-dfa.c (find_vars_r): Clear *walk_subtrees appropriately
	to avoid useless walking of subtrees.

	* fold-const.c (nondestructive_fold_binary_to_constant): Renamed
	from nondestructive_fold_binary.  Update comments slightly.
	(nondestructive_fold_unary_to_constant): Similarly.
	(fold_relational_hi_lo): Corresponding changes.
	* tree-ssa-ccp.c (ccp_fold): Corresponding changes.
	* tree.h: Corresponding changes.

2003-02-26  Jeff Law  <law@redhat.com>

	* tree-ssa-ccp.c (ccp_fold): Also handle folding of calls to
	builtin functions.

	* fold-const.c (nondestructive_fold_binary): Handle truth ops
	when both arguments are constant (duh!).  Handle CONJ_EXPR.

2003-02-26  Daniel Berlin  <dberlin@dberlin.org>

	* flags.h: Remove flag_ip.
	* toplev.c: Ditto.
	* tree-alias-ander.c: s/flag_ip/flag_unit_at_a_time/g.
	(andersen_cleanup): Set region to null when done.
	(andersen_function_call): Check DECL_PTA_TYPEVAR, not
	DECL_SAVED_TREE.
	* tree-alias-common.c: s/SSA_DECL_P/DECL_P/g.
	(get_alias_var_decl): Remove dead code, fix bug in what is a
	local alias var.
	(find_func_aliases): Use get_alias_var, not create_fun_alias_var.
	(create_fun_alias_var): Fix to use DECL_PTA_TYPEVAR.
	Use get_alias_var rather than create_alias_var.
	(create_fun_alias_var_ptf): Ditto.
	(create_alias_vars): Ditto.
	* tree-dfa.c (compute_may_aliases): Fix check for
	create_alias_vars.
	Move deletion of alias vars back to here, from tree-ssa.c
	* tree-ssa.c (delete_tree_ssa): Remove delete_alias_vars call.

2003-02-25  Jeff Law  <law@redhat.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (likely_value): If the statement has no
	use operands, then return CONSTANT.

	* fold-const.c (nondestructive_fold_binary): Handle TRUTH_AND_EXPR
	and TRUTH_OR_EXPR.  Placeholder for TRUTH_XOR_EXPR.
	* tree-ssa-ccp.c (ccp_fold): Handle TRUTH_{AND,OR,XOR}_EXPR.
	(def_to_undefined): Re-enable VARYING->UNDEFINED state transition
	sanity check.

	* tree-ssa-ccp.c (likely_value): Renamed from may_fold_p.  Now
	returns a latticevalue indicating the likely value for the
	the RHS of the statement.
	(evaluate_stmt): Update to use likely_value instead of may_fold_p.
	Statements with UNDEFINED operands produce an UNDEFINED result.
	(set_lattice_value): Reenable VARYING->CONSTANT sanity check.

2003-02-25  Andrew MacLeod  <amacleod@redhat.com>

	* tree-cfg.c (bsi_init): Handle BIND_EXPR nodes inside a basic block.
	(bsi_next_in_bb): Likewise.

2003-02-25  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (parent_array): Remove.  Update all users.
	(struct cfg_stats_d): Add field 'num_failed_bind_expr_merges'.
	(NEXT_BLOCK_LINK): Define.
	(build_tree_cfg): Call alloc_aux_for_blocks instead of
	create_block_annotations.
	(make_blocks): Rewrite to support basic blocks that can span whole
	BIND_EXPR bodies and put control statements at the end of blocks.
	Add arguments 'next_block_link' and 'bb'.  Replace 'parent_block'
	with 'parent_stmt'.  Update all users.
	(make_loop_expr_blocks): Replace argument 'parent_block' with 'entry'.
	Add argument 'next_block_link'.  Update all users.
	Don't create an empty latch block.
	(make_cond_expr_blocks): Add argument 'next_block_link'.  Update
	all users.
	(make_switch_expr_blocks): Likewise.
	(make_bind_expr_blocks): Replace 'parent_block' with 'parent_stmt'.
	Add argument 'next_block_link' and 'entry'.
	Don't create a new block for the BIND_EXPR node.  Extend the
	existing block.
	(add_stmt_to_bb): New function.
	(create_bb): Remove argument 'parent_block'.  Update all users.
	(create_block_annotations): Remove.  Update all users.
	(make_edges): Don't handle BIND_EXPR nodes.
	(make_ctrl_stmt_edges): Don't create an extra edge to the body of
	the switch.
	(make_loop_expr_edges): Only create an edge to the body of the
	loop.
	(remove_unreachable_block): Add more documentation for the special
	case where a control statement entry is unreachable but its body
	isn't.
	Remove the basic block annotation from the head and end containers
	in the block.
	(disconnect_unreachable_case_labels): Don't keep the edge that goes
	to the BIND_EXPR at the start of the switch body.
	(dump_tree_bb): Call is_latch_block_for.
	(dump_cfg_stats): Show stats about basic blocks that could not span
	beyond the end of a BIND_EXPR body.
	(successor_block): Use NEXT_BLOCK_LINK if the block is the last
	inside a control structure.
	(is_ctrl_stmt): Update documentation.
	(stmt_starts_bb_p): Add new argument 'prev_t'.  Update all users.
	Only labels may start a new basic block.
	(stmt_ends_bb_p): Add LOOP_EXPR, TRY_FINALLY_EXPR and
	TRY_CATCH_EXPR to the list.
	(latch_block): Remove.
	(is_latch_block_for): New function.
	(set_bb_for_stmt): Reformat some code.

	* tree-flow-inline.h (set_parent_block): Remove.  Update all users.
	(parent_stmt): New function.
	(parent_block): Call it.

	* tree-flow.h (struct stmt_ann_d): Add field 'parent_stmt'.
	(struct bb_ann_d): Remove block parent_block.

	* tree-pretty-print.c (dump_generic_node): Don't handle empty latch
	nodes.

	* tree-ssa-ccp.c (def_to_undefined): Temporarily disable check for
	VARYING->UNDEFINED transitions.
	(set_lattice_value): Likewise for VARYING->CONSTANT transitions.

	* tree-ssa-dce.c (mark_necessary): Use parent_stmt() to traverse
	all the control statements that contain the current
	statement.
	(makr_control_parent_necessary): Remove.  Update all users.
	(stmt_useful_p): Add BIND_EXPR to the list of useful
	statements.
	(process_worklist): Check that the statement is
	associated to a basic block.
	(remove_dead_stmt): Don't assume that the block has a
	postdominator.

2002-02-20  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c: Store cached ptsets in the typevar, not
	a seperate hash table.
	(ptset_map): Removed;
	(ptset_map_eq): Ditto.
	(ptset_map_hash): Ditto.
	(andersen_init): Remove ptset_map.
	(andersen_cleanup): Ditto.
	(andersen_add_var): Ditto.
	(andersen_add_var_asm): Ditto.
	(andersen_may_alias): Ditto.
	* tree-alias-common.c: Store typevars for DECL nodes in the tree_decl
	structure.
	(get_alias_var_decl): Use DECL_PTA_TYPEVAR for DECL's.
	(create_alias_var): Ditto.
	(find_func_aliases): CONST functions don't affect aliasing either.
	(ptr_may_alias_var): Don't call get_base_symbol.
	Remove decl_function_context, use DECL_CONTEXT instead.
	For DECL's, use DECL_PTA_TYPEVAR.
	* tree-alias-type.c (struct alias_typevar_aterm): Add ptset member.
	(ALIAS_TVAR_PTSET): New macro.
	* tree.h (DECL_PTA_TYPEVAR): New macro.
	(struct tree_decl): Add typevar member.

2003-02-20  Jeff Law  <law@redhat.com>

	* c-simplify.c (simplify_decl_stmt): Call set_vla_decl on the
	temporary holding the size and unit size for a VLA.  Minor
	formatting fixes.

	* ssa.c: Revert caching of immediate dominators change made on
	Jan 28, 2003.

	* tree-dfa.c: Fix comment.

2003-02-20  Jeff Law  <law@redhat.com>

	* tree-cfg.c (remove_bb): Update PHI nodes as edges are removed.
	(cleanup_cond_expr_graph): Likewise.
	(cleanup_switch_expr_graph): Likewise.
	(disconnect_unreachable_case_labels): Likewise.

	* tree-ssa-dce.c (mark_control_parent_necessary): Be much more
	selective about what statements in the control parents are marked
	as necessary.

	* tree-dfa.c (INDIRECT_REFs and ADDRESSABLE_VARs varrays): Replace
	with a single ALIASED_OBJECTs set of varrays.
	(dump_dfa_stats): Corresponding changes.
	(compute_may_aliases, dump_alias_info): Likewise.
	(compute_alias_sets): Likesise.  Update comments.    Register
	alias sets for all potentially aliased objects which are stored.
	Check each potentially aliased object with the registered alias
	sets.
	(register_alias_set): If DEREF aliases a single registered _DECL,
	then replace the _DECL's entry with DEREF.
	(find_alias_for): Update comments.  Do not stop the search when
	an alias is found.  There may be multiple entries with conflicting
	alias sets.
	(struct walk_state): New structure for statement walker callbacks.
	(find_vars_r): Add logic to track loads and stores of potentially
	aliased objects separately.  Various changes related to
	using a single set of varrays for all aliased objects.
	(add_referenced_var): Record in the var's annotation if the
	var is read or written.  Various changes related to using a
	single set of varrays for all the aliased objects.
	(add_stmt_operand): Only set may_point_to_global_mem for INDIRECT_REFs.
	* tree-flow.h (struct var_ann_d): Add new fields indicating if
	the var is loaded or stored.  Explicitly note unused bitfield
	entries.

2003-02-19  Jeff Law  <law@redhat.com>

	* fold-const.c (fold_negate_const): New function.  Broken out of
	the generic fold code.
	(fold_abs_const, fold_relational_const): Likewise.
	(fold_relational_hi_lo): Likewise.
	(nondestructive_fold_unary, nondestructive_fold_binary): Likewise.
	(fold): Use fold_negate_const, fold_abs_const, fold_relational_const,
	and fold_relational_hi_lo.
	* tree.h (nondestructive_fold_unary): Declare.
	(nondestructive_fold_binary): Declare.
	* tree-ssa-ccp.c (ccp_fold): New function.
	(add_control_edge): Fix trivial formatting bug.
	(evaluate_stmt): Rework to use ccp_fold instead of copying
	statements.

2003-02-18  Jeff Law  <law@redhat.com>

	* tree-ssa-ccp.c (visit_assignment): For simple copies, copy the
	lattice values.
	(defs_to_undefined): Add missing abort.
	(replace_uses_in): Do not do a replacement if it would create
	non GIMPLE trees.

2002-02-14  Jeff Law  <law@redhat.com>

	* tree-ssa-ccp.c (def_to_undefined): Improve sanity checking code
	so that it can detect invalid VARYING->UNDEFINED transitions.
	(set_lattice_value): Improve sanity checking code so that it
	does not trip on valid VARYING->CONSTANT transitions.

	* tree-flow.h (struct stmt_ann_d): Add new field in_ccp_worklist.
	* tree-ssa-ccp.c (simulate_stmt): Renamed from simulate_def_use_edges.
	(add_var_to_ssa_edges_worklist): New function.  Only add statements
	to the ssa_edges worklist if they are not already on the worklist.
	(def_to_undefined, def_to_varying, set_lattice_value)
	(tree_ssa_ccp): Only reevaluate the statement if in_ccp_worklist
	is set for the element popped off the ssa_edges worklist.
	(simulate_statement): Simplify now that ssa_edges is a worklist
	of statements to reevaluate rather than a worklist of defs
	that need their immediate uses reevaluated.
	(visit_stmt): Clear in_ccp_worklist.

	* tree-ssa-ccp.c (def_to_undefined): Directly store the new
	lattice values rather than call set_value.
	(def_to_varying): Likewise.
	(set_lattice_value): Likewise.

	* tree-ssa-ccp.c (def_to_undefined): Add some state transition
	sanity checking.  Avoid calling set_value if nothing changed.
	(def_to_varying): Avoid calling set_value if nothing changed.
	(set_lattice_value): Add some state transition sanity checking
	for transitions into the CONSTANT state.  If the object's
	"constant" value has changed to a new constant value, then the
	object has a VARYING value.

	* tree-ssa-ccp.c (tree_ssa_ccp): Work through the entire
	ssa_edges worklist each iteration through the main loop.

2002-02-13  Jeff Law  <law@redhat.com>

	* tree-ssa-ccp.c: Fix comment formatting glitches.

	* tree-ssa-ccp.c (may_fold_p): New function.  Returns nonzero if
	the given statement may fold after replacement of operands with
	constants.
	(evaluate_stmt): Only create a copy of the statement if there is
	a reasonable chance the statement will fold.

2002-02-13  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (OBJS): Add tree-ssa-pre.o.

2003-02-13  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (create_stmt_ann): Do stmt part of common annotation.
	* tree-flow-inline.h (tree_stmt): Return statement tree is part of.
	* tree-flow.h (struct bb_ann_d): Add ephi_nodes.
	* tree-optimize.c (optimize_tree): Activate SSAPRE again.
	* tree-pretty-print.c (debug_generic_expr): New function.
	(debug_generic_stmt): Ditto.
	(dump_generic_node): Pretty print EUSE's, EREF's,  and EPHI's.

	* tree-ssa-pre.c: Rewrite almost entirely. Now performs more
	strength reduction, EPHI minimization, and keeps SSA up to date.
	* tree.c (tree_size): Handle EUSE, EPHI, EREF nodes.
	(tree_node_structure): Ditto.
	(ephi_node_elt_check_failed): New function.
	* tree.def: Add EUSE_NODE, ELEFT_NODE, EKILL_NODE, EPHI_NODE,
	EEXIT_NODE.
	* tree.h (EREF_NODE_CHECK): New.
	(EPHI_NODE_ELT_CHECK): New.
	(struct tree_eref_common): New.
	(struct tree_euse_node): New.
	(struct tree_ephi_node): New.
	(union tree_node): Add euse, eref, ephi members.
	(enum tree_node_structure): Add TS_EPHI_NODE, TS_EUSE_NODE,
	TS_EREF_NODE.

2003-02-13  Daniel Berlin <dberlin@dberlin.org>
	    Andreas Jaeger  <aj@suse.de>

	* tree-flow.h: Add some garbage collector marks.

2003-02-12  Jeff Law  <law@redhat.com>

	* Makefile.in (ssa.o): Depends on $(TREE_H) and tree-flow.h
	* ssa.c: Include tree.h and tree-flow.h.
	(compute_dominance_frontiers_1): Use the sparse bitmap
	of dominator children from the basic block's annotation
	if it's available.  Otherwise build the sparse bitmap
	using the result of get_dominated_by.
	* tree-ssa.c (rewrite_into_ssa): Reorder things slightly so
	that we can use the cached dominator children computed
	by mark_def_sites in compute_dominance_frontiers.

2003-02-12  Andreas Jaeger  <aj@suse.de>

	* tree-dfa.c (dump_alias_info): Cast variable of size_t properly.

2003-02-12  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (find_may_aliases_for): Remove
	(compute_may_aliases): Always call compute_alias_sets.

2003-02-10  Jeff Law <law@redhat.com>

	* ssa.c (compute_dominance_frontiers_1): Use a sparse bitmap
	for the frontiers.
	(compute_dominance_frontiers): Corresponding changes.
	(convert_to_ssa): Similarly.  Convert the sparse bitmap to
	a simple bitmap to avoid lots of collateral damage.
	* ssa.h (compute_dominance_frontiers): Update prototype.
	* tree-ssa.c (added, in_work): Kill, no longer needed.
	(struct def_blocks_d): Add new bitmap (livein_blocks).
	(rewrite_into_ssa): Make dominance frontiers be a sparse
	bitmap instead of a simple bitmap.  Rename the "nonlocals"
	simple bitmap to "globals".  Pass it into mark_def_sites.
	(compute_global_livein): New function.
	(mark_def_sites): Also keep track of variables which are
	used before they are set.  Allow caller to allocate and
	pass in a simple bitmap for global variables.  Process
	items defined in the statement last.
	(set_def_block): Also allocate bitmap for globals.
	(set_livein_block): New function.
	(def_blocks_free): Free def_blocks correctly.  Also free
	livein_blocks.
	(debug_def_blocks_r): Also dump the livein_blocks.
	(insert_phi_nodes): Simplify now that we don't need the
	added and in_work varrays.  Accept DFS as a sparse bitmap
	instead of a simple bitmap.
	(insert_phi_nodes_for): Rework significantly.  Pre-compute all
	the insertion points for semi-pruned form.  While computing those
	insertion points keep track of how many phi vector entries
	would be needed at those insertion points.  When the number of
	entries gets large (32), compute global life information and
	use that to further pruned the number of PHI insertion points
	necessary.

2003-02-09  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_vars_r): Assume that the RHS of an INDIRECT_REF,
	that is also an SSA variable, is a VAR_DECL.
	(get_virtual_var): Handle INDIRECT_REF nodes that are not valid SSA
	variables.

	* tree-ssa-dce.c (stmt_useful_p): Revert kludge in previous commit.
	VA_ARG_EXPR nodes are not inherently live.

	* tree-ssa.c (mark_def_sites): Don't process the LHS of assignments
	twice.
	The operand of a virtual definition constitutes a use of the
	variable which should be considered a non-local if it had not been
	killed inside the block.

	* tree.h (SSA_VAR_P): Only return true for INDIRECT_REFs if their
	operand is a _DECL node.

2003-02-09  Diego Novillo  <dnovillo@redhat.com>

	* config/rs6000/t-rs6000 (simplify-rtx.o): Compile with -Wno-error.

2003-02-08  Diego Novillo  <dnovillo@redhat.com>

	* toplev.c (parse_options_and_default_flags): Enable SSA DCE by
	default.

	* tree-dfa.c (get_expr_operands): Recurse into LHS of an ARRAY_REF
	when it's not a regular variable.  Always recurse into the RHS.
	(add_stmt_operand): Set may_point_to_global_mem for pointers that
	are assigned expressions that may reference global memory.  Also
	set its dereference variable to be an alias of global memory.
	(dump_variable): Show may_point_to_global_mem flag.
	(compute_alias_sets): Also dump all referenced variables when
	dumping alias information.
	(add_may_alias): Check for global memory aliasing.
	(may_access_global_mem_p): Rename from may_access_global_mem.
	Return true if the expression is a variable that may point to or
	alias global memory.
	(add_referenced_var): Pointer arguments and global pointers may
	point to global memory.
	(set_may_alias_global_mem): Move ...
	* tree-flow-inline.h (set_may_alias_global_mem): ... here.
	(set_may_point_to_global_mem): New function.
	(may_point_to_global_mem_p): New function.

	* tree-ssa-dce.c (stmt_useful_p): VA_ARG_EXPRs are inherently live.
	* tree-ssa.c (rewrite_into_ssa): Don't call dump_referenced_vars.

2003-02-06  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (struct alias_tags, alias_tags, num_alias_tags):
	Remove.  Update all users.
	(struct alias_set_d): New.
	(alias_sets): New file local variable.
	(compute_alias_sets): New function.
	(compute_may_aliases): Call it when not doing points-to analysis.
	(register_alias_set): New function.
	(find_alias_for): New function.
	(may_alias_p): Declare static.
	Don't assume that VAR may not be aliased if it's a non-addressable
	_DECL.
	If VAR and PTR are aggregate types, check if they can have a field
	that points to the other one.
	(find_may_aliases_for): Move handling of global memory aliasing ...
	(add_may_alias): ... here.
	Also accept the base symbols for the variable and its alias.
	(register_new_alias): Remove.  Update all users.
	(find_alias_tag): Remove.  Update all users.
	(find_vars_r): Update VAR after re-writing *TP when sharing
	INDIRECT_REF nodes.
	* tree-flow.h (may_alias_p): Remove declaration.

	* tree-ssa.c (rewrite_into_ssa): Include referenced variables in
	default debug dumps.

	Support for VLAs.

	* tree-dfa.c (find_vla_decls): New function.
	(compute_may_aliases): Call it.
	(find_vla_decls_r): New function.
	(dump_variable): Show whether the variable is used in a VLA
	declaration.
	* tree-flow-inline.h (is_vla_decl): New function.
	(set_vla_decl): New function.
	* tree-flow.h (struct var_ann_d): Add bitfield 'is_vla_decl'.
	* tree-ssa-dce.c (need_to_preserve_store): Return true if SYM is
	used inside a VLA declaration.

2003-02-05  Andrew MacLeod  <amacleod@redhat.com>

	* Makefile.in : Include new file tree-iterator.h in tree-simple.h
	* gimplify.c (simplify_cleanup_point_expr): Use tsi_ rather than gsi_.
	* tree-cfg.c (make_blocks, remove_bb): Use tsi_ not gsi_ routines.
	(bsi_remove): Renamed from gsi_remove, use bsi_ routines.
	(successor_block, first_exec_stmt): Use tsi_ not gsi_ routines.
	(first_stmt, last_stmt, last_stmt_ptr): Use bsi_ not gsi_ routines.
	(bsi_init): Split out from bsi_start.
	(bsi_start): Renamed from gsi_start_bb, use bsi_ routines.
	(bsi_next_in_bb): Moved from tree-flow-inline.h and renamed from
	gsi_step_in_bb. Also verify BB of new stmt.
	* tree-dfa.c (compute_immediate_uses, dump_immediate_uses,
	collect_dfa_stats, compute_may_aliases): Use block_stmt_iterator.
	* tree-flow-inline.h (gsi_step_in_bb): Moved to tree-cfg.c
	(bsi_end_p): Renamed from gsi_end_bb_p.
	(bsi_next): renamed from gsi_step_bb
	(bsi_prev): New function.
	(bsi_stmt_ptr): Block version of gsi_stmt_ptr.
	(bsi_stmt): Block version of gsi_stmt.
	(bsi_container): Block version of gsi_container.
	* tree-flow.h (block_stmt_iterator): New iterator type.
	* tree-iterator.h: New include file for tree_iterator.
	* tree-simple.h : Include tree-iterator.h
	(gimple_stmt_iterator, gsi_start, gsi_end_p, gsi_stmt_ptr,
	gsi_stmt, gsi_container): Move to tree-iterator.h and rename to tsi_.
	(gsi_step): Move to tree-iterator.h and renamed to tsi_next.
	* tree-ssa-ccp.c (simulate_block, substitute_and_fold): Use block
	iterators instead of gimple_stmt_iterator.
	* tree-ssa-dce.c (mark_control_parent_necessary, find_useful_stmts,
	remove_dead_stmts, remove_dead_stmt): Use block_stmt_iterator.
	* tree-ssa.c (mark_def_sites, rewrite_out_of_ssa, rewrite_stmts): Use
	block_stmt_iterator.

2003-02-04  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.c (get_alias_var_decl): If it's a global var,
	make sure it doesn't get added to local_alias_vars.
	(get_name): Return the right name for FUNCTION_DECL's.

2003-02-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_stmt_operand): Do not add a VUSE for a pointer
	when clobbering its associated INDIRECT_REF variable.

2003-02-04  Diego Novillo  <dnovillo@redhat.com>

	* config/rs6000/t-rs6000 (jump.o, regmove.o, c-typeck.o, cfgrtl.o,
	combine.o, fold-const.o, ifcvt.o, reload1.o, rtlanal.o,
	cp/decl2.o, cp/pt.o, f/where.o, java/expr.o, objc/objc-act.o,
	rs6000.o, insn-emit.o): Compile with -Wno-error.

2003-02-03  Diego Novillo  <dnovillo@redhat.com>
	    Jeff Law  <law@redhat.com>

	* tree-cfg.c (make_blocks): Don't always start a new block with
	COND_EXPR and SWITCH_EXPR statements.
	Call stmt_ends_bb_p to determine if the current statement should be
	the last in the block.
	(make_cond_expr_blocks): Second argument is now the entry block
	to the conditional.
	(make_switch_expr_blocks): Second argument is now the entry block
	to the switch.
	(make_edges, make_ctrl_stmt_edges, make_loop_expr_edges,
	cleanup_control_flow, cleanup_cond_expr_graph,
	cleanup_switch_expr_graph, disconnect_unreachable_case_labels,
	find_taken_edge, successor_block, latch_block, is_latch_block,
	switch_parent): Work with the last statement of the block, not the
	first.
	(is_ctrl_altering_stmt): Pre-compute the code of the statement.
	(stmt_starts_bb_p): Declare file local.
	Don't call is_ctrl_stmt.  Check if T is a LOOP_EXPR instead.
	(stmt_ends_bb_p): New function.

	* tree-flow.h (stmt_starts_bb_p): Remove declaration.

2003-02-03  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_vars_r): Share INDIRECT_REF nodes whose operand
	is a VAR_DECL.
	(add_referenced_var): Add additional argument 'sym'.  Update all users.
	Don't call get_base_symbol.
	(add_indirect_ref_var): Rename argument 'var' to 'ptr'.
	(htab_hash_var): Remove.  Update all users to use htab_hash_pointer.
	(htab_var_eq): Remove.  Update all users to use htab_eq_pointer.

	* tree-flow-inline.h (var_ann): Don't retrieve the annotation of
	the base pointer for INDIRECT_REF variables.
	(is_aliased): Remove.  Update all users.
	(is_dereferenced): Remove.  Update all users.
	(same_var_p): Remove.  Update all users to use pointer equality.

	* tree-simple.c (get_base_symbol): Convert tail recursion into
	iteration.

	* tree-ssa.c (rewrite_out_of_ssa): Add FIXME note about overlapping
	live ranges for different versions of the same variable.

2003-02-03  Jeff Law  <law@redhat.com>

	* tree-dfa.c (add_referenced_var): Annotate each item in the
	REFERENCED_VARS varray with a unique id.
	* tree-flow.h (struct var_ann_d): Add new uid field.
	* tree-ssa.c (mark_def_sites): Compute the set of variables
	live across basic blocks and return them in an sbitmap.
	(insert_phi_nodes): Use the set of nonlocal variables computed
	by mark_def_sites to reduce the number of PHI nodes inserted.
	(rewrite_into_ssa): Updated to deal with changes in
	insert_phi_nodes and mark_def_sites.  Free the sbitmap returned
	by mark_def_sites.

2003-02-03  Diego Novillo  <dnovillo@redhat.com>

	* c-common.h (GOTO_DESTINATION): Remove.  Fix botched
	merge.

2003-02-03  Diego Novillo  <dnovillo@redhat.com>

	Fix warnings to allow bootstrapping with -Werror.

	* Makefile.in (c-semantics.o-warn): Add -Wno-error.
	(emit-rtl.o-warn): Likewise.
	(profile.o-warn): Likewise.
	(tree.o-warn): Likewise.
	(OBJS): Remove simple-break-elim.o and simple-goto-elim.o.
	* c-pretty-print.c (print_function_decl): Remove unused function.
	* bitmap.c (bitmap_last_set_bit): Initialize variable 'word'.
	* c-typeck.c (build_binary_op): Initialize variable 'type'.
	* combine.c (combine_simplify_rtx): Initialize variable 'reversed'.
	(make_compound_operation): Initialize variable 'i'.
	* dwarf2out.c (dwarf2out_finish): Initialize variable 'context'.
	* expr.c (store_constructor): Initialize variables 'lo', 'hi',
	'startb' and 'endb'.
	(expand_expr): Initialize variable 'op0'.
	* fold-const.c (fold): Initialize variable 'tem'.
	* profile.c (branch_prob): Initialize variable 'prev_file_name'.
	* reload.c (find_equiv_reg): Initialize variables 'valtry and
	'valueno'.
	* rtlanal.c (get_jump_table_offset): Initialize variable 'set'.
	* ssa-ccp.c (ssa_const_prop): Fix sign mismatch warning.
	* varasm.c (output_constant_def): Initialize variable 'defstr'.
	* gimplify.c (simplify_expr): Initialize variables
	'saved_input_filename' and 'saved_lineno'.
	(simplify_compound_lval): Initialize variable 'code'.
	* tree-alias-ander.c (pta_bottom): De-ansify.
	(andersen_cleanup): Remove unused variables.
	(andersen_heap_assign): Mark argument lhs ATTRIBUTE_UNUSED.
	(pta_bottom): Remove unused function.
	(pta_get_ptsize): Remove unused function.

2003-02-02  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (get_expr_operands): Add a VUSE for the dereference of
	every pointer passed in a function call.
	Move code to add an operand for the base pointer of an
	INDIRECT_REF ...
	(add_stmt_operand): ... here.
	Add a VUSE for the base pointer of every INDIRECT_REF variable.
	(find_may_aliases_for): Fix starting index for the loop that scans
	INDIRECT_REFs for aliasing.
	Factor code that marks two variables aliased into
	register_new_alias.
	(register_new_alias): New function.
	(may_alias_p): Handle aliasing of structure fields.
	(add_may_alias): Fix documentation.
	(find_vars_r): Factor code that adds a new referenced variable into
	add_referenced_var.
	(add_referenced_var): New function.
	(add_indirect_ref_var): New function.
	(get_virtual_var): Handle variables wrapped in SSA_NAMEs.
	(set_may_alias_global_mem): Move from ...
	* tree-flow-inline.h: ... here.

	* tree-ssa-dce.c (need_to_preserve_store): CALL_EXPRs are
	implicitly live.  VA_ARG_EXPRs are not.
	(stmt_useful_p):

	* tree.h (SSA_NAME_VAR): Rename from SSA_NAME_DECL.  Update all
	users.
	(struct tree_ssa_name): Rename field 'decl' to 'var'.  Update all
	users.
	(SSA_DECL_P): Accept only VAR_DECLs and PARM_DECLs possibly wrapped
	inside an SSA_NAME node.
	(SSA_VAR_P): Also accept SSA_NAME nodes.

2003-02-01  Daniel Berlin  <dberlin@dberlin.org>

	* Makefile.in (tree-ssa-pre2.o): Remove accidental addition.

2003-01-31  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (find_taken_edge_cond_expr): New function.
	(find_taken_edge_switch_expr): New function.
	(value_matches_some_label): New function.
	(find_taken_edge): Re-structure to use the three new functions.

2003-01-30  Jason Merrill  <jason@redhat.com>

	* gimplify.c (simplify_function_tree): Set TREE_SIDE_EFFECTS on
	the BIND_EXPR wrapper.

2003-01-30  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (call_may_clobber): New function.
	(get_expr_operands): Call it.
	(find_vars_r): Call it.

2003-01-30  Jeff Law <law@redhat.com>

	* tree-dfa.c (struct alias_tags): New.  Collector for key information
	regarding alias tags.
	(indirect_refs_base, indirect_refs_alias_set): New varrays.
	(addressable_vars_base, addressable_vars_alias_set): Likewise.
	(compute_may_aliases): Initialize and finalize the new varrays.
	Update allocation of alias tags information.
	(find_may_aliases_for): Extract base symbols and alias set
	information for V1 and V2 from the virtual arrays and store
	them into local variables.  Pass them as necessary to
	may_alias_p, may_access_global_mem, find_alias_tag.  Add base
	symbol and alias set when creating a new alias tag.
	(find_vars_r): Fill in new varrays as needed.
	(may_alias_p): Add new arguments for base and alias set of the
	two origianl incoming arguments.  No longer call get_base_symbol
	or get_alias_set.
	(find_alias_tag,  may_access_global_mem): Similarly.
	(add_stmt_operand): Update to pass additional argument to
	may_access_global_mem.
	(dump_alias_info): Update to deal with new alias tag structure.
	* tree-flow.h (may_alias_p): Update prototype with new arguments.
	* tree-ssa-pre.c (process_left_occs_and_kills): Update to pass
	new arguments to may_alias_p.

2003-01-30  Daniel Berlin  <dberlin@dberlin.org>

	Remove all traces of steensgaard's algorithm.
	* tree-alias-steen.c: Removed.
	* tree-alias-steen.h: Ditto.
	* tree-alias-ecr.c: Ditto.
	* tree-alias-ecr.h: Ditto.
	* disjoint-set.c: Ditto.
	* disjoint-set.h: Ditto.
	* Makefile.in: Remove removed files.
	* c-config-lang.in: Ditto.
	* gengtype.c: Ditto.
	* tree-alias-common.c: Don't use steen_alias_ops anymore.
	* toplev.c: Remove help text and steen option.
	* tree-alias-common.h: Remove PTA_STEEN.
	* tree-alias-type.c: Remove all steensgaard related types and
	functions.
	* tree-alias-type.h: Ditto.

2003-01-30  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (struct cfg_stats_d): New.
	(cfg_stats): New file local.
	(build_tree_cfg): Start TV_TREE_CFG timer before allocating memory.
	Initialize cfg_stats.
	(make_blocks): Count coalesced label blocks.
	(dump_tree_cfg): Call dump_cfg_stats if TDF_STATS is enabled.
	(dump_cfg_stats): New.
	(debug_cfg_stats): New.

	* tree-dfa.c (SCALE, LABEL, PERCENT): Move ...
	* tree-flow.h: ... here

2003-01-29  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (make_blocks): Do not start a new block if the
	previous statement and the current statement are labels of the same
	kind.

2003-01-29  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (parent_array): Make file local.
	(label_to_block_map): New file local variable.
	(build_tree_cfg): Initialize label_to_block_map.
	(make_edges): Don't pre-scan all the blocks looking for blocks with
	labels.
	(make_exit_edges): Remove argument label_to_block_map.  Update all
	callers.
	(make_goto_expr_edges): Likewise.
	(dump_tree_bb): Check that the block has a valid annotation.
	(set_bb_for_stmt): If the statement is a label, add the label to
	the label_to_block_map.

	* tree-pretty-print.c (dump_vops): Check that the block has a valid
	annotation.

2003-01-29  Jeff Law <law@redhat.com>

	* tree-dfa.c (find_may_aliases_for): Just accept the index of
	the current indirect_ref.  Caller updated.
	(num_indirect_refs, num_addressable_vars): New variables.
	(indirect_refs, addressable_vars): New varrays.
	(dump_dfa_status): Dump info on the indirect refs and
	addressable vars.
	(dump_alias_info): Similarly.
	(compute_may_aliases): Initialize and finalize the new virtual
	arrays and hash tables for indirect refs and addressable vars.
	Include setup/teardown in the cost for alias analysis.
	(find_may_aliases_for):  Split main loop into two.  The first
	walks over the indirect refs and takes advantage of the
	symmetric properties of the aliasing relationship to avoid
	useless work.  The second loop iterates over the addressable
	variables.
	(find_vars_r): Rework to build all three arrays we need.

2003-01-29  Andreas Jaeger  <aj@suse.de>

	* tree-alias-common.c (find_func_aliases): Remove unused variable.
	(display_points_to_set_helper): #if 0 function to avoid warning
	about unused function.

	* tree-alias-ecr.c (ECR_new): Remove ISO C style function
	definition.
	* disjoint-set.c (disjoint_set_new): Likewise.

2003-01-29  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mx_xfn_indirect_ref): Use a stack of flags for
	tracking pointer dereference reads vs writes.
	(mf_build_check_statement_for): Pass access-type value to __mf_check.
	* c-mudflap.c (mflang_register_call): Adapt to mf-runtime.h API change.

2003-01-29  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (ssa.o): Add dependency on $(TIMEVAR_H).
	* timevar.def (TV_DOM_FRONTIERS): Define.
	* ssa.c (compute_dominance_frontiers): Use.

2003-01-29  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-dce.c (remove_dead_stmt): Fix uninitialized use
	warning.

2003-01-28  Diego Novillo  <dnovillo@redhat.com>

	* timevar.def (TV_TREE_SSA_REWRITE_BLOCKS): Adjust legend.
	* tree-ssa.c (rewrite_into_ssa): Use TV_TREE_SSA_REWRITE_BLOCKS.
	(mark_def_sites): Add comment.

2003-01-28  Jeff Law <law@redhat.com>

	* ssa.c (compute_dominance_frontiers_1): Use get_dominated_by
	to avoid useless walks over all the basic blocks.  Use cache
	of immediate dominators to avoid silly calls to get_immediate_dominator.
	Do not clear elements of the frontiers bitmap.
	(compute_dominance_frontiers): Compute cache of immediate
	dominators and pass it to compute_dominance_frontiers_1.  Clear
	the entire vector of frontiers bitmaps.

	* timevar.def (TV_TREE_SSA_REWRITE_BLOCKS): Renamed from
	TV_TREE_BUILD_SSA.
	(TV_TREE_SSA_OTHER): New timevar.
	* tree-ssa.c (rewrite_into_ssa): Updated.  Use new TV_TREE_SSA_OTHER
	timevar.

	* tree.h (LABEL_DECL_INDEX): Define for use by CFG builder.
	* tree-cfg.c (make_exit_edges): Accept and pass though label to
	block mapping array.
	(make_goto_expr_edges): For simple gotos, lookup the destination
	in the label to block mapping array.  Zap old slow code to
	handle simple gotos.
	(make_edges): Build the label to block mapping array.

	* tree.h (PHI_NODE_ELT_CHECK): Provide version when ENABLE_CHECKING
	is not defined.

2003-01-28  Diego Novillo  <dnovillo@redhat.com>

	* tree-flow-inline.h (parent_block, set_parent_block, phi_nodes):
	Assume that blocks always have valid annotations.
	(add_dom_child): New function.
	(dominator_children): New function.

	* tree-flow.h (struct bb_ann_d): Add field 'dom_children'.

	* tree-ssa.c (mark_def_sites): Add parameter 'idom'.
	Add each block BB to the set of dominator children of BB's
	immediate dominator.
	(rewrite_block): Remove 'idom' parameter.
	Recurse into blocks set in the dominator children bitmap.

2003-01-28  Diego Novillo  <dnovillo@redhat.com>

	* flags.h (flag_disable_tree_ssa): New flag.
	* c-decl.c (c_expand_body): Use it.
	* toplev.c: Declare it.
	(f_options): Add help text for -fdisable-tree-ssa.
	* doc/invoke.texi: Add documentation for -fdisable-tree-ssa.

2003-01-28  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (TREE_FLOW_H): Add dependency on $(HASHTAB_H)
	(OBJS): Temporarily remove tree-ssa-pre.o.
	(tree-ssa.o, c-decl.o): Add dependency on $(TREE_DUMP_H).

	* c-decl.c: Include tree-dump.h

	* c-pretty-print.c (dump_c_node): Fix rendering of GOTO_STMTs to
	computed locations.
	(op_prio): Don't abort on unknown operators.

	* c-simplify.c (mostly_copy_tree_r): Don't copy statement
	annotations.

	* gimplify.c (simplify_addr_expr): Mark the RHS of the simplified
	ADDR_EXPR addressable.
	(mostly_copy_tree_r): Don't copy statement annotations.

	* old-tree-inline.c (walk_tree): Handle SSA_NAME nodes.

	* timevar.def (TV_TREE_RDEFS): Remove.
	(TV_TREE_BUILD_SSA): Define.
	(TV_TREE_DFA): Define.

	* tree-cfg.c: Update copyright notices.
	Remove doxygen markers everywhere.
	(remove_unreachable_block): New local function
	(remove_unreachable_blocks): Call it.
	(remove_bb): Rename from remove_tree_bb.  Update all callers.
	(validate_loops): Remove unused function.
	(block_invalidates_loop): Remove unused function.
	(remove_stmt): Invalidate the defining statement of all the
	definitions made by the statement.
	Remove the annotation before replacing the statement with
	empty_stmt_node.

	* tree-dfa.c: Update copyright notices.
	Remove doxygen markers everywhere.
	(struct clobber_data_d): Remove existing fields.  Add fields 'stmt'
	and 'prev_vops'.  Update all users.
	(alias_tags): Rename from alias_leaders.
	(num_alias_tags): Rename from num_alias_leaders.
	(struct dfa_stats_d): Declare.
	(struct dfa_counts_d): Remove.  Update all users.
	(TRM_*): Remove.  Update all users.
	(find_tree_refs): Remove.  Update all users.
	(get_stmt_operands): Rename from find_refs_in_stmt.  Update all users.
	(get_expr_operands): Rename from find_refs_in_expr.  Update all users.
	(add_stmt_operand): New function.
	(set_def): New function.
	(add_use): New function.
	(add_vdef): New function.
	(add_vuse): New function.
	(create_phi_node): New function.
	(copy_stmt): New function.
	(compute_immediate_uses): New function.
	(compute_immediate_uses_for): New function.
	(compute_reached_uses): New function.
	(compute_reaching_defs): New function.
	(add_immediate_use): New function.
	(create_var_ann): New function.
	(create_stmt_ann): New function.
	(dump_immediate_uses): New function.
	(debug_immediate_uses): New function.
	(dump_immediate_uses_for): New function.
	(debug_immediate_uses_for): New function.
	(create_ref_list, empty_ref_list, add_ref_to_list_begin,
	add_ref_to_list_end, add_list_to_list_begin, add_list_to_list_end,
	find_list_node, rli_start, rli_start_last, rli_start_at,
	rli_delete, add_ref_to_list_after, tree_ref_size, create_ref,
	add_ephi_arg, add_referenced_var, replace_ref_with,
	try_replace_ref_with, replace_ref_r, replace_ref_stmt_with,
	remove_ref, remove_def, reset_def_def_links, replace_phi_arg_with,
	create_tree_ann, function_may_recurse_p, dump_ref, debug_ref,
	dump_ref_list, dump_ref_array, debug_ref_list, debug_ref_array,
	dump_phi_args, dump_if_different, count_tree_refs, ref_type_name,
	ref_defines, is_killing_def, tree_ref_structure, output_ref):
	Remove.  Update all users.
	(dump_referenced_vars): Remove parameter 'details'.  Update all
	users.
	(dump_variable): Don't abort if the variable is nil.  Display all
	the aliases for the variable.
	(dump_dfa_stats): Handle new counters.
	(collect_dfa_stats): Likewise.
	(collect_dfa_stats_r): Likewise.
	(find_vars_r): New function.
	(compute_may_aliases): Call it via walk_tree before computing aliases.
	Only use alias tags if -ftree-points-to is not given.
	Call add_may_alias.
	(find_may_aliases_for): Only use alias tags if -ftree-points-to is
	not given.
	(add_may_alias): New function.
	(find_alias_tag): Rename from find_alias_leader.
	(dump_alias_info): New function.
	(debug_alias_info): New function.
	(htab_hash_var): New function.
	(htab_var_eq): New function.
	(get_virtual_var): New function.

	* tree-dump.c (struct dump_option_value_info): Rename -block to
	-blocks.  Add new option -vops.
	(dump_function): Don't display which pass enabled the dump.

	* tree-flow-inline.h: Update copyright notices.
	(var_ann): New function.
	(stmt_ann): New function.
	(ann_type): New function.
	(bb_ann): Rename from bb_annotation.
	(may_aliases): New function.
	(set_may_alias_global_mem): New function.
	(may_alias_global_mem_p): New function.
	(set_indirect_ref): New function.
	(indirect_ref): New function.
	(is_dereferenced): New function.
	(modify_stmt): New function.
	(unmodify_stmt): New function.
	(stmt_modified_p): New function.
	(def_op): New function.
	(use_ops): New function.
	(vdef_ops): New function.
	(vuse_ops): New function.
	(immediate_uses): New function.
	(reaching_defs): New function.
	(phi_nodes): New function.
	(same_var_p): New function.
	(gsi_step_in_bb): Re-implement.  Check if the iterator stepped out
	of the block by calling bb_for_stmt.
	(gsi_end_bb_p): Rename from gsi_end_bb.  Update all users.
	Call gsi_stmt to determine if the iterator has reached the end of
	the block.
	(ref_id, ref_type, ref_bb, ref_stmt, ref_var, imm_uses,
	reached_uses, imm_reaching_def, set_imm_reaching_def,
	set_phi_arg_def, phi_arg_def, set_phi_arg_edge, phi_arg_edge,
	reaching_defs, phi_args, num_phi_args, phi_arg, set_phi_arg,
	tree_annotation, tree_refs, add_tree_ref, remove_tree_ref,
	alias_leader, set_alias_leader, set_tree_flag, clear_tree_flag,
	reset_tree_flags, tree_flags, indirect_var, set_indirect_var,
	bb_refs, remove_bb_ref, set_exprref_class, exprref_class,
	set_exprref_inserted, exprref_inserted, set_exprref_save,
	exprref_save, set_exprref_reload, exprref_reload,
	set_exprref_processed, set_exprref_processed2, exprref_processed2i,
	exprref_uses, set_exprref_uses, set_expruse_def, expruse_def,
	set_expruse_phiop, expruse_phiop, set_expruse_phi, expruse_phi,
	set_expruse_has_real_use, expruse_has_real_use,
	set_exprphi_phi_args, exprphi_phi_args, num_ephi_args, ephi_arg,
	set_ephi_arg, set_exprphi_downsafe, exprphi_downsafe,
	set_exprphi_canbeavail, exprphi_canbeavail, set_exprphi_later,
	exprphi_later, set_exprphi_extraneous, exprphi_extraneous,
	exprphi_willbeavail, is_assignment_stmt, is_may_ref, is_may_def,
	is_may_use, is_partial_ref, is_partial_use, is_volatile_ref,
	is_volatile_def, is_volatile_use, is_clobbering_def,
	is_relocating_def, is_addressof_use, is_pure_use, is_pure_def,
	rli_after_end, rli_step, rli_step_rev, rli_ref, get_last_ref,
	get_first_ref, ref_list_is_empty): Remove.  Update all users.

	* tree-flow.h: Update copyright notices.
	Remove doxygen markers.
	Include hashtab.h.
	(enum tree_ann_type): New.
	(struct tree_ann_common_d): New.
	(struct var_ann_d): New.
	(struct operands_d): New.
	(struct voperands_d): New.
	(operands_t): New type.
	(voperands_t): New type.
	(struct dataflow_d): New.
	(dataflow_t): New type.
	(struct stmt_ann_d): New.
	(tree_ann): New type.
	(var_ann_t): New type.
	(stmt_ann_t): New type.
	(bb_ann_t): Rename from bb_ann.
	(enum tree_ref_type, TRM_*, struct ref_list_node, struct
	ref_list_priv, ref_list, struct tree_ref_common, struct var_ref_d,
	struct var_def_d, struct var_phi_d, struct var_use_d, struct
	phi_node_arg_d, phi_node_arg, struct expr_ref_common, struct
	expr_phi_d, struct expr_use_d, enum tree_ref_structure_enum, union
	tree_ref_d, tree_ref, struct tree_ann_d, tree_ann, enum tree_flags,
	struct dfa_counts_d, ref_list_iterator): Remove.  Update all users.
	(TDFA_USE_OPS): Define.
	(TDFA_USE_VOPS): Define.

	* tree-inline.c (walk_tree): Handle SSA_NAME nodes.

	* tree-optimize.c: Update copyright notices.
	Remove doxygen markers.
	(optimize_function_tree): Temporarily disable call to
	tree_perform_ssapre.
	Remove #if0 code.

	* tree-pretty-print.c (MASK_POINTER): Define.
	(dump_vops): New function.
	(dump_generic_node): Shorten made-up names for unnamed objects.
	Hanlde PHI_NODE, VDEF_EXPR and SSA_NAME nodes.
	Keep track of basic block transitions.
	Call dump_vops if -vops dump option is given.
	(op_prio): Don't abort if the operand is nil.
	(dump_block_info): Don't keep track of basic block transitions.

	* tree-simple.c: Update copyright notices.
	(get_base_symbol): Call STRIP_NOPS.
	Handle SSA_NAME nodes.

	* tree-simple.h: Update copyright notices.
	(gsi_end_p): Rename from gsi_end.  Update all callers.

	* tree-ssa-ccp.c: Update copyright notices.
	Update code to use the new SSA infrastructure.
	(const_values): New hash table to keep track of constants.
	(struct value_map_d): New.
	(cfg_edges): Rename from edges.  Update all users.
	(set_value): New function.
	(get_value): New function.
	(get_default_value): New function.
	(value_map_hash): New function.
	(value_map_eq): New function.

	* tree-ssa-dce.c: Update copyright notice.
	Update code to use new SSA infrastructure.  Factor some code into
	new functions.
	(dom_info): Declare with file scope.
	(struct stmt_stats): Add fields 'total_phis' and 'removed_phis'.
	(needed_stmts): New hash table to keep track of needed statements.
	(stmt_useful_p): New function.
	(find_useful_stmts): Call it.
	(remove_dead_stmt, remove_dead_phis): New functions.
	(remove_dead_stmts): Call them.
	(need_to_preserve_store): Preserve stores to volatile variables.
	(tree_ssa_dce): Rename from tree_ssa_eliminate_dead_code.  Update
	all users.

	* tree-ssa.c: Update copyright notice.
	Change basic algorithm to rewrite the function into SSA form
	instead of building factored use-def chains.
	Include hashtab.h and tree-dump.h
	(next_ssa_version): New global variable.
	(def_blocks): New file local variable.
	(struct def_blocks_d): New.
	(currdefs): New file local variable.
	(struct currdef_d): New.
	(rewrite_into_ssa): Rename from build_tree_ssa.  Update all users.
	Call compute_may_aliases, mark_def_sites and rewrite_block.
	(rewrite_block): Rename from search_fud_chains.  Call
	rewrite_stmts.
	(mark_def_sites): New function.
	(set_def_block): New function.
	(rewrite_stmts): New function.
	(rewrite_stmt): New function.
	(rewrite_operand): New function.
	(rewrite_out_of_ssa): New function.
	(remove_phi_node): New function.
	(register_new_def): New function.
	(def_blocks_free): New function.
	(def_blocks_hash): New function.
	(def_blocks_eq): New function.
	(currdef_hash): New function.
	(currdef_eq): New function.
	(debug_def_blocks): New function.
	(debug_def_blocks_r): New function.
	(build_fud_chains, compute_reaching_defs, follow_chain,
	dump_reaching_defs, debug_reaching_defs, set_ssa_links): Remove.
	(remove_phi_arg): Rename from tree_ssa_remove_phi_alternative.
	Update all users.
	(init_tree_ssa): Set next_ssa_version to 1.
	Create hash tables def_blocks and currdefs.
	(delete_tree_ssa): Accept a FUNCTION_DECL tree as argument.  Update
	all users.
	(currdef_for): Add new parameter 'create_default'.  If nonzero,
	create a new SSA name if none is found for the variable.
	(set_currdef_for): Search in the currdefs hash table.

	* tree.c (tree_node_kind): Add new values phi_kind and
	ssa_name_kind.
	(tree_node_kind_names): Likewise.
	(tree_size): Handle PHI_NODE and SSA_NAME nodes.
	(make_node): Likewise.
	(tree_node_structure): Likewise.
	(phi_node_elt_check_failed): New function.
	(make_phi_node): New function.
	(make_ssa_name): New function.
	(build_vdef_expr): New function.

	* tree.def (SSA_NAME): New code.
	(VDEF_EXPR): New code.
	(PHI_NODE): New code.

	* tree.h (union tree_ann_d): Forward declare.
	(struct tree_common): Change type of field 'ann'.
	(PHI_NODE_ELT_CHECK): Define.
	(phi_node_elt_check_failed): Declare.
	(VDEF_RESULT): Define.
	(VDEF_OP): Define.
	(SSA_NAME_DECL): Define.
	(SSA_NAME_DEF_STMT): Define.
	(SSA_NAME_VERSION): Define.
	(struct tree_ssa_name): New.
	(PHI_RESULT): Define.
	(PHI_NUM_ARGS): Define.
	(PHI_ARG_CAPACITY): Define.
	(PHI_ARG_ELT): Define.
	(PHI_ARG_EDGE): Define.
	(PHI_ARG_DEF): Define.
	(struct phi_arg_d): New.
	(struct tree_phi_node): New.
	(SSA_DECL_P): Define.
	(SSA_VAR_P): Define.
	(enum tree_node_structure_enum): Add values TS_SSA_NAME and
	TS_PHI_NODE.
	(union tree_node): Add fields 'ssa_name' and 'phi'.
	(make_phi_node): Declare.
	(make_ssa_name): Declare.
	(build_vdef_expr): Declare.
	(TDF_BLOCKS): Rename from TDF_BLOCK.
	(TDF_VOPS): Define.

	* doc/invoke.texi: Document new tree dump option -vops.  Update
	documentation for switch -blocks.

2003-01-27  Jeff Law <law@redhat.com>

	* gimplify.c (simplify_return_expr): Correctly handle return
	expressions with side effects in functions returning void.

	* tree-ssa-ccp.c (widen_bitfield): Do not try to widen anything
	except constant integers.

2003-01-26  Jeff Law <law@redhat.com>

	* c-simplify.c (simplify_decl_stmt): Fix comment typo.
	Use correct predicate when "simplifying" a static initializer.

2003-01-26  Andreas Jaeger  <aj@suse.de>

	* Makefile.in (gt-dependence.h): New rule.

2003-01-23  Jeff Law <law@redhat.com>

	* c-simplify.c (simplify_decl_stmt): Arrange to examine initializers
	for static variables.
	* gimplify.c (simplify_constructor): Kill initial is_simple_constructor
	check.
	(simplify_modify_expr): Get the type from the destination rather than
	the toplevel expression.  Handle case where type is ARRAY_TYPE.  Ignore
	TREE_STATIC for the RHS.

2003-01-24  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_varname_tree): Check for non-NULL DECL_NAME
	before trying to cplus_demangle it.

2003-01-23  Jeff Law <law@redhat.com>

	* tree-cfg.c (make_exit_edges): Fix thinkos.

2003-01-22  Jeff Law <law@redhat.com>

	* tree-cfg.c (make_goto_expr_edges): Check the underlying
	LABEL_DECL, not the LABEL_EXPR for FORCED_LABEL and NONLOCAL_LABEL.

	* gimplify.c (simplify_expr, case GOTO_EXPR): Identify and mark
	labels which are targets of nonlocal gotos and mark functions which
	have labels which are targets of nonlocal gotos.
	(simplify_expr, case LABEL_DECL): New case.  Mark labels which
	have their address taken.
	* tree-cfg.c (is_nonlocal_label_block): Remove.  All callers
	updated.
	(make_exit_edges, case GOTO_EXPR): Handle computed gotos sanely.
	(make_exit_edges, case CALL_EXPR): Handle abnormal edges from
	nonlocal gotos at call sites.
	(make_exit_edges, case RETURN_EXPR): Likewise.
	(make_exit_edges, case MODIFY_EXPR): New case to handle abnormal
	edges from nonlocal gotos as call sites.
	(make_goto_expr_edges): Handle computed gotos and nonlocal gotos.
	(is_ctrl_altering_stmt): Handle abnormal edges in CALL_EXPRs
	functions which receive nonlocal gotos.  Similarly for CALL_EXPRs
	which occur on the RHS of a MODIFY_EXPR.
	* tree.h (FORCED_LABEL, NONLOCAL_LABEL): New defines.
	(FUNCTION_RECEIVES_NONLOCAL_GOTO): Likewise.

2003-01-22  Frank Ch. Eigler  <fche@redhat.com>

	* doc/invoke.texi: Provide some information about -fmudflap.

	* tree-mudflap.c (mf_varname_tree): Conditionally invoke the C++
	demangler in libiberty.  Reduce function printing verbosity.
	(mf_file_function_line_tree):  Reduce function printing verbosity.
	(mudflap_enqueue_decl): Use COMPLETE_TYPE_P to avoid trying to
	register (get size of) void-typed objects.

2003-01-21  Jose Renau  <renau@uiuc.edu>

	* tree-flow-inline.h (get_lineno): Return -1 for nodes without
	locus information.
	(get_filename): Return "???" for nodes without locus information.

2003-01-21  Jeff Law <law@redhat.com>

	* tree-cfg.c (cleanup_switch_expr_graph): Wrap declaration of
	switch_expr with ENABLE_CHECKING block.

	* c-simplify.c (is_last_stmt_of_scope): Wrap definition and
	declaration inside and ENABLE_CHECKING block.

2003-01-20  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mx_xfn_indirect_ref): Use new TREE_LOCUS field
	as a predicate for finding TREE_FILENAME etc.

2003-01-16  Daniel Berlin  <dan@dberlin.org>

	* Remove dead PRE code.
	* tree-ssa-pre.c (tree_perform_ssapre): Collect left occurrences and
	kills *after* finishing collecting all expressions.

2003-01-15  Jeff Law <law@redhat.com>

	* Death to WFL nodes.
	* c-aux-info.c: Replace DECL_SOURCE_FILE and DECL_SOURCE_LINE with
	TREE_FILENAME and TREE_LINENO respectively when retrieving file
	and line information.  Use TREE_LOCUS to copy existing information
	from one node to another.  Use annotate_with_file_line to add or
	replace location information on a node.  Remove support for
	EXPR_WITH_FILE_LOCATION nodes.  Remove STRIP_WFL statements.
	* c-common.c, c-parse.in, c-pretty-print.c, dbxout.c: Likewise.
	* diagnostic.c, dwarf2out.c, dwarfout.c: Likewise.
	* except.c, integrate.c, stmt.c, tree-alias-common.c: Likewise.
	* tree-cfg.c, tree-dfa.c, tree-dump.c, tree-flow-inline.h: Likewise.
	* tree-mudflap.c, tree-pretty-print.c, tree-simple.c: Likewise.
	* tree-ssa-ccp.c, tree-ssa-dce.c, tree-ssa-pre.c: Likewise.
	* varasm.c, xcoffout.c: Likewise.
	* config/alpha/alpha.c: Likewise.
	* config/mips/mips.c: Likewise.
	* c-decl.c: Likewise.
	(duplicate_decls): Also copy TREE_LOCUS from olddecl to newdecl.
	(finish_function): Save and restore the current filename and
	linenumber around genericizing of the function tree.
	* c-simplify.c (c_simplify_stmt): Use annotate_all_with_file_line
	instead of wrap_all_with_wfl.  Remove STRIP_WFL statements.
	* expr.c (expand_expr): Emit line number notes for expressions
	with attached file/line information.  Remove EXPR_WITH_FILE_LOCATION
	support.
	* gimplify.c: Kill STRIP_WFL statements.  Remove EXPR_WITH_FILE_LOCATION
	support.
	(simplify_expr_wfl): Kill.
	(annotate_stmt_with_file_line): Renamed from wrap_with_wfl.
	(annotate_all_with_file_line): Renamed from wrap_all_with_wfl.
	(simplify_expr): Save and restore the current file/line around
	simplification of the given expression.  Add annotation to more
	nodes created during simplification.
	(simplify_self_mod_expr): Add file/line location to nodes we create.
	(get_initialized_tmp_var): Similarly.
	* old-tree-inline.c (expand_call_inline): Use annotate_with_file_line
	to add file/line information to nodes instead of wrapping them
	with EXPR_WITH_FILE_LOCATION nodes.
	* print-tree.c: Use TREE_FILENAME and TREE_LINENO instead of
	DECL_SOURCE_FILE and DECL_SOURCE_LINE respectively.  Remove
	support for EXPR_WITH_FILE_LOCATION nodes.
	(print_node): Dump any file/line information that is attached to
	the given node.
	* tree-inline.c (walk_tree): Set lineno appropriately.
	* tree-simple.h (annotate_all_with_file_line): Renamed from
	wrap_all_with_wfl.  Remove STRIP_WFL statements.
	* tree.c (build_expr_wfl): Kill.
	(make_node): Use annotate_with_file_line.
	(annotate_with_file_line): New function.
	* tree.def: Remove EXPR_WITH_FILE_LOCATION.
	* tree.h (tree_common): Add locus field.  Remove references to
	EXPR_WITH_FILE_LOCATION.
	(tree_decl): Remove locus field.
	(STRIP_WFL, EXPR_WFL_*): Kill.
	(DECL_SOURCE_LOCATION, DECL_SOURCE_FILE, DECL_SOURCE_LINE): Kill.
	(TREE_LOCUS, TREE_FILENAME, TREE_LINENO): new.
	(annotate_with_file_line): Renamed from build_expr_wfl.

	* objc/objc-act.c: Use TREE_FILENAME and TREE_LINENO to
	extract file/line information from tree nodes.

2003-01-14  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mx_xfn_indirect_ref): Handle ARRAY_REF of
	a COMPONENT_REF specially to avoid unnecessary checks.

2003-01-13  Frank Ch. Eigler  <fche@redhat.com>

	Front-end generalization.
	* Makefile.in (C_AND_OBJC_OBJS): Add c-mudflap.o and dependencies.
	* tree-mudflap.c: Don't include "c-tree.h" any more.
	(mf_init_extern_trees): Divert to mflang_lookup_decl().
	(mf_enqueue_register_call, mf_flush_enqueued_calls): Move and rename
	these functions.
	* tree-mudflap.h: Declare new mflang_* routines.
	* c-mudflap.c: New file with C front-end mflang_* routines.
	* tree-nomudflap.c (*): Call internal_error instead of abort.

2003-01-07  Steven Bosscher  <s.bosscher@student.tudelft.nl>

	* Makefile.in (check-g95): New test target.
	(check-f95): Alias for check-g95.

2003-01-07  Diego Novillo  <dnovillo@redhat.com>

	* tree-dump.c (dump_function_to_file): New function.
	(dump_function): Call it.
	Convert argument declaration to K&R format.
	* tree-dump.h: Include splay-tree.h.
	(dump_function_to_file): Declare.

	* tree-optimize.c (optimize_function_tree): Remove unused variables
	dump_file and dump_flags.
	(dump_current_function): Remove.  Update all users by calling
	dump_function instead.
	* tree.h (dump_current_function): Remove declaration.

	* Makefile.in (TREE_DUMP_H): Define.
	Update targets depending on tree-dump.h to depend on $(TREE_DUMP_H).
	(tree-ssa-cp.o): Remove unused target.
	(tree-cfg.o): Add dependency on $(TREE_DUMP_H).
	(tree-optimize.o): Likewise.
	(tree-ssa-dce.o): Likewise.
	(tree-ssa-ccp.o): Likewise.
	(tree-ssa-pre.o): Likewise.

2003-01-02  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (rename_2): Fix a false matching condition.
	This is actually fallout from is_default_def change.

2003-01-02  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (c_genericize): Dump more info about the function.
	Use dump_function.
	* tree-dump.c (dump_function): Move from cp/optimize.c.
	* tree-dump.h: Declare it.

	* gimplify.c (mostly_copy_tree_r): Remove unnecessary cases.
	(unshare_expr): New fn.
	* tree-inline.c (mark_local_for_remap_r, unsave_r): New fns, adapted
	from C++ versions.
	(lhd_unsave_expr_now): Likewise.
	* tree.c (unsave_expr_now): Remove.
	(unsafe_for_reeval): Labels and BIND_EXPRs are only somewhat unsafe.

	* gimplify.c (simplify_function_tree): Add an outer BIND_EXPR if
	needed.
	(voidify_wrapper_expr): Not static.  Abort if we try to voidify an
	expression with TREE_ADDRESSABLE type.  Be clever with INDIRECT_REFs.
	(foreach_stmt): Avoid redundant work.
	(create_tmp_var): Abort if we try to create a temp of ADDRESSABLE type.
	(simplify_expr): Simplify VTABLE_REF.
	* c-simplify.c (simplify_decl_stmt): Ignore DECL_EXTERNAL decls.
	(simplify_stmt_expr): Fix thinko.
	(simplify_block): Don't ignore partial scopes.
	(simplify_condition): New fn.
	(simplify_c_loop, simplify_if_stmt, simplify_switch_stmt): Call it.
	* expr.c (expand_expr) [BIND_EXPR]: Handle statics better.
	* tree-inline.c (remap_decl): Remap all decls.
	(declare_return_variable): Be clever with INDIRECT_REFs.
	(expand_call_inline): If we have an explicit return slot, the inlined
	body is void.
	(walk_tree): Fix type handling.
	(copy_tree_r): Don't walk into decls.
	* tree-simple.c (is_simple_unary_expr): Handle VTABLE_REF.
	(is_simple_id): Allow RESULT_DECL.
	* tree-simple.h (gsi_stmt): Strip WFLs and NOPs.

	* gimplify.c (simplify_cond_expr): Handle void arms.  Add target parm.
	(simplify_modify_expr): Pass it.  Add special handling for COND_EXPR
	and CONSTRUCTOR (from Daniel Berlin).  Add want_value parm.
	(simplify_expr): Pass new args. Loop sooner if language-specific
	simplification happened.
	(simplify_return_expr): Pass the whole MODIFY_EXPR to simplify_expr.
	(simplify_target_expr): Simplify.

	* tree.def (CATCH_EXPR, EH_FILTER_EXPR): New tree codes.
	* except.c (expand_eh_handler): New fn.
	(expand_eh_region_end_allowed): If no types are allowed, hand off to
	expand_eh_region_end_must_not_throw.
	* except.h: Declare expand_eh_handler.
	* expr.c (expand_expr) [TRY_CATCH_EXPR]: Use it.
	[CATCH_EXPR, EH_FILTER_EXPR]: New cases.
	* gimplify.c (simplify_expr) [EXC_PTR_EXPR, CATCH_EXPR,
	EH_FILTER_EXPR]: New cases.
	(gimple_build_eh_filter): New fn.
	(maybe_protect_cleanup): New fn.
	(gimple_push_cleanup): Call it.
	(simplify_cleanup_point_expr): Fix thinko.
	* c-simplify.c (simplify_cleanup): Call it.
	* tree-simple.h: Declare it.
	* Makefile.in (gimplify.o): Depend on except.h.
	* tree.h (CATCH_TYPES, CATCH_BODY): New macros.
	(EH_FILTER_TYPES, EH_FILTER_FAILURE): New macros.
	* tree-simple.c (is_simple_id): Allow EXC_PTR_EXPR.
	* c-pretty-print.c (dump_c_node) [CLEANUP_POINT_EXPR]: Support.
	* tree-pretty-print.c (dump_generic_node): Likewise.
	[CATCH_EXPR, EH_FILTER_EXPR, EXC_PTR_EXPR]: Support.

	* c-pretty-print.c (NIY): Print operands.
	(dump_c_tree): Don't look at TREE_CHAIN if it doesn't matter.
	(dump_c_node) [ARRAY_TYPE]: Handle non-constant array bounds.
	[CALL_EXPR]: Pass spc down.
	[VTABLE_REF]: Support.
	(op_prio) [TARGET_EXPR]: Support.
	(print_call_name): Handle function pointers.
	* tree-pretty-print.c: Likewise.

2002-12-31  Steven Bosscher  <s.bosscher@student.tudelft.nl>

	* gimplify.c (create_tmp_var_noc): Remove unused function.
	* tree-simple.h: Kill prototype.

2002-12-30  Diego Novillo  <dnovillo@redhat.com>

	* tree-flow.h (tree_find_loops): Remove unused declaration.

2002-12-29  Daniel Berlin  <dberlin@dberlin.org>

	* toplev.c: Add flag_ip, enable by default at -O4+ (This is not
	set in stone, and thus, not documented).
	(decode_f_option): Add warning if andersen's PTA is selected but
	not compiled in.

	* flags.h: Add flag_ip.

	* tree-alias-ander.c: Fix todo.
	(andersen_function_call): Return 1 if we don't need to process
	the function.
	(ptset_map): New map, cache points-to sets.
	(andersen_op): We can do IP on all statics without help.
	(andersen_init): Only init once if we are doing ip analysis.
	(andersen_cleanup): Don't cleanup if we need the info for ip.
	(andersen_add_var): Clear points-to set if it exists already.
	(andersen_add_var_same): Ditto.
	(andersen_function_call): We can do interprocedural analysis on
	statics.
	(andersen_may_alias): Cache points-to sets.

	* c-decl.c (c_expand_body): Don't throw away tree if flag_ip is
	on, even if they are uninlinable, they may be wanted for ip
	optimizations.

	* tree-alias-common.c (get_values_from_constructor): New
	function to collect alias_typevars from constructors.
	(alias_annot): Fix where the GTY is so gengtype picks it up.
	(intra_function_call): Ignore non-pointers for global var
	assignment. What arguments point to can now point to a global var
	as well.
	(find_func_aliases): We need to handle decl's with initials as
	well.
	Only call intra_function_call if we have to.
	Handle constructors.
	(create_fun_alias_var): Incoming pointer arguments could be
	pointing to a global var, unless this is a static function and we
	are doing interprocedural analysis.
	(create_alias_vars): Take an fndecl argument, and use it.
	(init_alias_vars): Handle ip_partial as well.
	(ptr_may_alias_var): Simplify, fix.

	* tree-alias-common.h (tree_alias_ops): function_call now returns
	an int, and we have an extra member named ip_partial.

	* tree-alias-steen.c (steen_ops): We can't do ip_partial.
	(steen_function_call): Update definition and return 1.

	* tree-dfa.c (compute_may_aliases): Call create_alias_vars with
	current_function_decl.

	* tree-flow.h (create_alias_vars): Remove proto from here, it's
	in tree-alias-common.h.
	(tree_perform_ssapre): Take a tree, like the other optimizers.

	* tree-optimize.c (optimize_function_tree): Call
	tree_perform_ssapre with a tree.

	* tree-ssa-pre.c: Remove dead, #if 0'd code.
	(tree_perform_ssapre): Use passed in tree.

2002-12-23  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_decl_cache_locals, mf_decl_clear_locals): New
	functions.
	(mudflap_c_function): Call them before/after basic transforms.
	(mf_cache_shift_decl_l, ..._mask_l): New variables to track local
	VAR_DECL shadows of cache parameters.
	(mf_build_check_statement_for): Use and update them.

2002-12-23  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mx_register_decls): Trust incoming TREE_ADDRESSABLE
	instead of own timetaking analysis.
	(mf_find_addrof, mx_xfn_find_addrof): Removed functions.

2002-12-23  Steven Bosscher <s.bosscher@student.tudelft.nl>

	* tree-dfa.c: Add doxygen markers in comments.

2002-12-22  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c: Undo the following change:
	    2002-12-11  Diego Novillo  <dnovillo@redhat.com>
		* gimplify.c (simplify_return_expr): return statements should
		  only have a GIMPLE value as argument.

	* tree-simple.c: Fix grammar for return statements.

2002-12-20  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_init_extern_trees): Rewrite last change
	without using statement-expressions.

2002-12-19  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (build_tree_cfg): Make sure that TV_TREE_CFG
	is popped properly.

2002-12-19  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_init_extern_trees): Abort gracefully if
	<mf-runtime.h> was not included.
	(*): Correct some minor compiler warnings elsewhere.

2002-12-18  Diego Novillo  <dnovillo@redhat.com>

	* configure: Regenerate with autoconf 2.13.

2002-12-17  Ben Elliston  <bje@redhat.com>

	* tree-optimize.c (optimize_function_tree): Temporarily
	disable SSA optimizations if -fmudflap is present.

2002-12-16  Ben Elliston  <bje@redhat.com>

	* tree-mudflap.c (mx_flag): Assert that the tree node is valid.

2002-12-14  Jason Merrill  <jason@redhat.com>

	* tree-dump.c (dump_files): Add .generic.  Move .inlined after it.
	* tree.h (tree_dump_index): Likewise.
	* c-simplify.c (c_genericize): Emit original and generic dumps here.
	* c-decl.c (c_expand_body): Not here.

2002-12-13  Ben Elliston  <bje@redhat.com>

	* tree-dfa.c (find_refs_in_expr): Terminate comment.

2002-12-12  Steven Bosscher <s.bosscher@student.tudelft.nl>

	* tree-cfg.c: Update doxygen documentation.
	* tree-dfa.c: Add doxygen documentation.

2002-12-11  Steven Bosscher <s.bosscher@student.tudelft.nl>

	* tree-cfg.c: Add doxygen markers in comments.
	* tree-optimize.c: Likewise.
	* tree-ssa.c: Likewise.

2002-12-11  Diego Novillo  <dnovillo@redhat.com>

	* gimplify.c (simplify_return_expr): return statements should only
	have a GIMPLE value as argument.
	* tree-cfg.c (call_expr_flags): New function.
	(is_ctrl_altering_stmt): Call it.
	* tree-flow.h (extern): Declare it.

2002-12-06  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (make_goto_expr_edges): Temporary hack to prevent
	removing blocks with nonlocal labels.
	(is_nonlocal_label_block): Return true if DECL_NONLOCAL is set for
	the label.

	* tree-dfa.c (alias_leaders): New local array.
	(num_alias_leaders): New local variable.
	(find_alias_leader): New local function.
	(may_access_global_mem): New local function.
	(find_may_aliases_for): Call them.
	(compute_may_aliases): Allocate and deallocate alias_leaders.
	Show alias information if -fdump-tree-...-alias flag is given.
	(may_alias_p): Return true if both variables are the same.
	(find_refs_in_expr): Strip WFL and NOPs from the parent statement.
	If a pointer relocation is due to a function call, assignment from
	a global or a function argument, mark the pointer as a may-alias
	for global storage.
	(dump_referenced_vars): Reformat output.
	(dump_variable): Likewise.

	* tree-dump.c (dump_option_value_info): Add entry for TDF_ALIAS.
	* tree.h (TDF_ALIAS): Define.
	* doc/invoke.texi: Document new flag.

	* tree-flow-inline.h (may_alias_global_mem_p): New function.
	* tree-flow.h (enum tree_flags): Add value TF_MAY_ALIAS_GLOBAL_MEM.
	(may_alias_global_mem_p): Declare.

	* tree-simple.c (get_base_symbol): Return NULL_TREE, not NULL.
	* tree-ssa-ccp.c (tree_ssa_ccp): Remove unused variable.
	* tree-ssa-dce.c (need_to_preserve_store): Call
	decl_function_context instead of DECL_CONTEXT.
	If the symbol may alias global memory, return nonzero.

	* tree-ssa.c (dump_reaching_defs): Reformat output.
	(set_currdef_for): Walk the alias leader chain, setting CURRDEF for
	all the alias sets that may be affected by the definition.

2002-12-06  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (may_alias_p): Fix global variables and points-to.

2002-12-03  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa.c (delete_tree_ssa):  Move call to delete_alias_vars
	above resetting num_referenced_vars.

2002-12-03  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in: Add dependencies on $(TM_H) and coretypes.h for the
	files mentioned below.
	* old-tree-inline.c: Include tm.h and coretypes.h.
	* c-pretty-print.c: Likewise.
	* disjoint-set.c: Likewise.
	* tree-alias-ecr.c: Likewise.
	* tree-alias-type.c: Likewise.
	* tree-alias-ander.c: Likewise.
	* tree-alias-steen.c: Likewise.
	* tree-alias-common.c: Likewise.
	* tree-ssa.c: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-cfg.c: Likewise.
	* tree-dfa.c: Likewise.
	* tree-optimize.c: Likewise.
	* c-simplify.c: Likewise.
	* gimplify.c: Likewise.
	* tree-browser.c: Likewise.
	* simple-break-elim.c: Likewise.
	* simple-goto-elim.c: Likewise.
	* tree-dchain.c: Likewise.
	* c-call-graph.c: Likewise.
	* tree-simple.c: Likewise.
	* tree-nomudflap.c: Likewise.
	* tree-pretty-print.c: Likewise.
	* tree-ssa-dce.c: Likewise.
	* tree-ssa-ccp.c: Likewise.
	* dependence.c: Likewise.
	* tree-mudflap.c: Likewise
	(mx_xfn_indirect_ref): Use size_type_node instead of c_size_type_node.

2002-12-03  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c: Undo this change that causes bootstrap
	failures:

	2002-12-02  Diego Novillo  <dnovillo@redhat.com>

		* tree-dfa.c (may_alias_p): Artificial variables
		can also be aliased.

2002-12-03  Andreas Jaeger  <aj@suse.de>

	* tree-simple.c (right_assocify_expr): Remove unused variable.

2002-12-02  Andrew MacLeod  <amacleod@redhat.com>

	* gimplify.c (simplify_cleanup_point_expr): gsi_stmt can return NULL,
	use gsi_end.
	* tree-cfg.c (make_blocks): Use gsi_end, gsi_stmt can return NULL. Set
	basic_block for empty_stmt_node containers.
	(make_edges): Stmt's can be NULL.
	(make_ctrl_stmt_edges, make_exit_edges, make_loop_expr_edges,
	make_cond_expr_edges, make_goto_expr_edges, is_nonlocal_label_block,
	block_invalidates_loop, cleanup_control_flow, cleanup_cond_expr_graph,
	cleanup_switch_expr_graph, disconnect_unreachable_case_labels,
	find_taken_edge, tree_cfg2dot, successor_block, is_latch_block,
	switch_parent, first_stmt, last_stmt): Check for first_stmt() or
	last_stmt() returning NULL.
	(remove_tree_bb, first_exec_stmt): Use gsi_end.
	(last_stmt_ptr): Iterate to find last execuatbel stmt_ptr in a block.
	(gsi_start_bb): Return first non-empty stmt, if there is one.
	(set_bb_for_stmt): Don't decend into an empty_stmt_node.
	* tree-dfa.c (find_tree_refs): Use gsi_end.
	(collect_dfa_stats): Use gsi_end_bb.
	* tree-flow-inline.h (gsi_step_bb): split.
	(gsi_step_in_bb): gsi_step with explicit bb specified. Never return
	empty_stmt_node.
	(gsi_start_bb): Move to tree-cfg.c.
	(gsi_end_bb): New. Have we reached the end of a basic block.
	* tree-flow.h (gsi_start_bb): Make external.
	(gsi_end_bb, gsi_step_in_bb): New prototypes.
	* tree-simple.h (gsi_end): renamed from gsi_after_end.
	(gsi_stmt): Return NULL if stmt is an empty_stmt_node or error mark.
	* tree-ssa-ccp.c (simulate_block, substitute_and_fold): Use gsi_end.
	* tree-ssa-dce.c (mark_control_parent_necessary, find_useful_stmts,
	remove_dead_stmts): Use gsi_end_bb.
	(process_worklist): Check for NULL last_stmt.
	* tree-ssa-pre.c (finalize_1): Use gsi_end_bb, gsi_stmt can be NULL.

2002-12-02  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (dump_ref): Display '<nil>' for NULL references.
	(dump_phi_args): Handle NULL arguments.
	(may_alias_p): Artificial variables can also be aliased.

2002-12-02  Daniel Berlin <dberlin@dberlin.org>

	* tree-ssa-pre.c (okay_injuring_def): inj could be null.
	(get_operand):  Use instead of special casing INDIRECT_REF and
	COMPONENT_REF everywhere.
	(names_match_p): Fix.
	(defs_match_p): Ignore partial uses.
	(rename_2): Fix non-matching condition.
	(update_old_new): Update the kills and lefts arrays.
	(finalize_1): Set the bb for the new statement.
	(update_ssa_for_new_use): Ditto.
	(code_motion): Ditto.
	(call_modifies_slot): Handle function pointers (where we end up
	with a _DECL as our argument).
	(pre_part_1_trav): Update the kills and lefts arrays.
	Just use TREE_TYPE (ei->expr) for type of expression.
	(add_left_occ): New helper function.
	(process_left_occs_and_kills): Add other cases we need to handle.
	(tree_perform_ssapre): Add new processed array, since for left
	occurrences and kills, we need to process *all* statements, not
	just ones we might consider candiates for PRE.

2002-12-02  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_refs_in_expr): Look for references in
	VA_ARG_EXPR nodes.

2002-12-01  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (optimize_function_tree): Undo
	inadvertent change in previous commit.

2002-12-01  Diego Novillo  <dnovillo@redhat.com>

	* fold-const.c (operand_equal_p): Check for NULL TREE_TYPEs.

	* tree-cfg.c (remove_stmt): Call remove_ref.
	(disconnect_unreachable_case_labels): Do not disconnect the edge
	going to the block holding the BIND_EXPR node for the switch()
	body.
	(dump_tree_cfg): Call dump_current_function.

	* Makefile.in (tree-dfa.o): Depend on convert.h.
	* tree-dfa.c: Include convert.h.
	(remove_def): New local function.
	(reset_def_def_links): New local function.
	(replace_phi_arg_with): New local function.
	(replace_ref_with): New function.
	(try_replace_ref_with): Rename from replace_ref_in.
	Also look for V_USE references on the LHS of assignments.
	When replacing the callee of a CALL_EXPR, make sure that the type
	of the new callee is compatible with the old one.
	(replace_ref_r): Call operand_equal_p.
	(remove_ref): New function.
	(same_var_p): New function.
	(dump_referenced_vars): Add new flag DETAILS.  Update all users.
	(debug_referenced_vars): Likewise.

	* tree-ssa.c (dump_reaching_defs): Change output format.
	(set_ssa_links): Don't set def-def links for PHI nodes.

	* tree-ssa-ccp.c (replace_uses_in): Add new argument COMMIT.
	Update all users.

	* tree-optimize.c (dump_current_function): New function.
	(optimize_function_tree): Call it.
	* tree.h (dump_current_function): Declare.
	* c-decl.c (c_expand_body): Call dump_current_function.
	* tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Likewise.
	* tree-ssa-pre.c (tree_perform_ssapre): Likewise.
	* tree-ssa.c (build_tree_ssa): Likewise.
	* tree-ssa-ccp.c (tree_ssa_ccp): Likewise.
	Dump variables and reaching definitions if TDF_DETAILS is set.

	* tree-pretty-print.c (print_call_name): Call dump_generic_node for
	NOP_EXPR operands.

	* tree-ssa-pre.c: Don't include c-common.h nor c-tree.h
	Replace calls to build_modify_expr with build everywhere.
	Replace calls to deep_copy_node with copy_node_r everywhere.

2002-11-29  Andreas Jaeger  <aj@suse.de>

	* c-call-graph.c (construct_call_graph): Fix format.

	* tree-alias-ander.c: Declare print_out_result.

	* tree-ssa-pre.c: Declare is_on_lhs and call_modifies_slot.

	* tree.h: Declare expand_asm_expr and add_var_to_bind_expr.

	* tree-inline.c: Declare remap_decls.

2002-11-28  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.h: Start adding doxygen docs.

	* tree-alias-common.c: Ditto

2002-11-28  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ander.c: Convert debug defines and ifdefs into
	dump_file use.

	* tree.h: Add TDI_pta.

	* tree-dump.c: Add dump-tree-pta and TDI_pta.

2002-11-28  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa-pre.o, tree-cfg.o, gimplify.o, tree-ssa-dce.o,
	tree-ssa-ccp.o): Add dependency on $(TIMEVAR_H).
	* timevar.def (TV_TREE_GIMPLIFY, TV_TREE_MAY_ALIAS,
	TV_TREE_INSERT_PHI_NODES, TV_TREE_BUILD_FUD_CHAINS, TV_TREE_RDEFS):
	New timers.
	(TV_TREE_SSA): Remove.
	(TV_INTEGRATION, TV_EXPAND): Switch order.
	* c-decl.c (c_expand_body): Pop TV_EXPAND before running the tree
	optimizers.
	* gimplify.c (simplify_function_tree): Push/pop TV_TREE_GIMPLIFY.
	* tree-cfg.c (build_tree_cfg): Push/pop TV_TREE_CFG.
	* tree-dfa.c (compute_may_aliases): Push/pop TV_TREE_MAY_ALIAS.
	* tree-ssa-ccp.c (tree_ssa_ccp): Push/pop TV_TREE_CCP.
	* tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Push/pop
	TV_TREE_DCE.
	Call compute_reaching_defs.
	Remove debugging dumps before DCE.
	* tree-ssa-pre.c (tree_perform_ssapre): Push/pop TV_TREE_PRE.
	* tree-ssa.c (build_tree_ssa): Don't call compute_reaching_defs.
	Don't call dump_reaching_defs.
	(insert_phi_nodes): Push/pop TV_TREE_INSERT_PHI_NODES.
	(build_fud_chains): Push/pop TV_TREE_BUILD_FUD_CHAINS.
	(compute_reaching_defs): Push/pop TV_TREE_RDEFS.
	Call dump_reaching_defs.
	* tree-optimize.c (optimize_function_tree): Remove calls to
	timevar_push and timevar_pop.

2002-11-28  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa.o): Add dependency on $(TIMEVAR_H) and
	tree-alias-common.h.
	(tree-dfa.o): Likewise.
	(tree-optimize.o): Add dependency on $(TIMEVAR_H).
	* tree-dfa.c (compute_may_aliases): Move call to delete_alias_vars
	* tree-ssa.c (delete_tree_ssa): ... here.

2002-11-27  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_may_alias): Remove.  Update all users.
	(get_alias_index): Remove.  Update all users.
	(dfa_stats_d): Remove fields num_may_alias, max_num_may_alias,
	num_alias_imm_rdefs and max_num_alias_imm_rdefs.  Update all users.
	(may_alias_p): Make extern.  Move declaration to tree-flow.h.
	(TRM_DEFAULT): Remove.  Update all users.  Update values of the
	other TRM_* constants.
	(create_ref): Don't initialize the PHI argument array with the
	number of incoming edges.
	(collect_dfa_stats): Do not traverse the function body with
	walk_tree.
	Free temporary hash table before returning.
	(compute_may_aliases): Update comment.
	(may_alias_p): Switch arguments if the first argument is not an
	INDIRECT_PTR or the artificial global_var.
	(find_may_aliases_for): If a pointer aliases a variable, set the
	pointer to be the alias leader for the variable.
	(ref_defines): Call may_alias_p.
	(is_killing_def): Return false if the reaching definition is NULL.
	Don't check for volatile definitions.
	Change second argument to be a tree.  Update all users.

	* tree-flow-inline.h (alias_imm_reaching_def): Remove.  Update all
	users.
	(may_alias): Remove.  Update all users.
	(set_imm_reaching_def): Check for circularity.
	(alias_leader): New function.
	(set_alias_leader): New function.
	(is_aliased): New function.
	(is_default_def): Remove.  Update all users.

	* tree-flow.h (struct var_ref_d): Remove field alias_imm_rdefs.
	Update all users.
	(struct var_def_d): Remove field m_default.  Update all users.
	(struct tree_ann_d): Remove field may_aliases.  Update all users.
	Add field alias_leader.
	(struct dfa_counts_d): Remove fields num_may_alias and
	num_may_alias_imm_rdefs.  Update all users.

	* tree-ssa.c: Update documentation on may-alias processing.
	(set_ssa_links): Remove third argument.  Update all users.
	(set_alias_imm_reaching_def): Remove.  Update all users.
	(create_default_def): Likewise.
	(analyze_rdefs): Likewise.
	(currdef_for): Move from tree-flow-inline.h
	(set_currdef_for): Likewise.
	(compute_reaching_defs): Rename from compute_tree_rdefs.  Update
	all users.
	(follow_chain): Call is_killing_def instead of is_partial_def.
	(tree_ssa_remove_phi_alternative): Remove unused variable ref.
	(set_ssa_links): When processing V_USE references, make sure that
	CURRDEF is a definition for the variable or one of its aliases.

2002-11-26  Sebastian Pop  <s.pop@laposte.net>

	* Makefile.in (OBJS): Add tree-browser.o.
	(tree-browser.o): New dependency.
	* tree-browser.c: New file.
	* tree-browser.def: New file.

2002-11-26  Jason Merrill  <jason@redhat.com>

	Gimplify C++ cleanups.
	* gimplify.c (voidify_wrapper_expr): Split out from...
	(simplify_bind_expr): ...here.
	(simplify_cleanup_point_expr): New fn.
	(simplify_target_expr): New fn.
	(gimple_conditional_context): New fn.
	(gimple_push_condition, gimple_pop_condition): New fns.
	(simplify_expr) [TRY_CATCH_EXPR]: Handle like TRY_FINALLY_EXPR.
	* c-simplify.c (simplify_cleanup): New fn.
	(c_simplify_stmt): Call it and lang_simplify_stmt.
	(simplify_expr_stmt): Wrap the expr in a CLEANUP_POINT_EXPR.
	(simplify_return_stmt, simplify_decl_stmt): Likewise.
	(simplify_stmt_expr): Handle the STMT_EXPR_NO_SCOPE case.
	(is_last_stmt_of_scope): Likewise.
	* c-common.h: Declare c_genericize, c_simplify_stmt and
	lang_simplify_stmt.
	* c-common.c (lang_simplify_stmt): Define.

	Gimplify EXIT_EXPRs.
	* gimplify.c (gimplify_loop_expr, gimplify_exit_expr): New fns.
	(simplify_expr): Call them.
	* expr.c (expand_expr) [LOOP_EXPR]: Pass 1 again for exit_flag.

	* tree-simple.c (right_assocify_expr): Also set TREE_SIDE_EFFECTS.

	* gimplify.c (simplify_expr): Call STRIP_TYPE_NOPS.
	[REALPART_EXPR]: Don't just return.

	* tree-pretty-print.c (dump_c_node): Handle REFERENCE_TYPE.
	* c-pretty-print.c (dump_c_node): Likewise.  Handle null FOR_INIT_STMT.

2002-11-25  Daniel Berlin <dberlin@dberlin.org>

	* config.gcc: Try committing the correct version.
	* tree-alias-ander.c (andersen_may_alias): Add "!= NULL" to make
	return a bool.

2002-11-24  Daniel Berlin  <dberlin@dberlin.org>

	* configure.in: Add --with-libbanshee, passed to us by toplevel if
	libbanshee was configured. Substitute appropriate definitions for
	Makefile (IE disabling tree-alias-ander building) if it wasn't.
	* config.in: Regenerated.
	* config.gcc: Rebuild libbanshee with stage1 on darwin to work
	around system compiler problem.
	* configure: Regenerated.
	* Makefile.in: Add banshee stuff.
	* tree-alias-ander.c: New file.
	* tree-alias-ander.h: New file.
	* tree-alias-common.c (get_alias_var): Fix field based stuff.
	(find_func_aliases): Don't walk subtrees if we processed the tree.
	(ptr_may_alias_var): Fix both field-based and non-field-based lookup.

2002-11-22  Andrew MacLeod  <amacleod@redhat.com>

	* tree-ssa-dce.c (mark_necessary): Split out mark_tree_necessary. Don't
	mark if tree is already marked.
	(mark_tree_necessary): New. Mark tree without processing control parent.
	(mark_control_parent_necessary): Remove recursion, mark trees directly.
	(need_to_preserve_store): Can expression/symbol affect external values.
	(tree_ssa_eliminate_dead_code): Split.
	(find_useful_stmts): Find initial set of needed statements.
	(process_worklist): Find statements which calculate needed statements.
	(remove_dead_stmts): Delete statements which are dead.

2002-11-16  Jason Merrill  <jason@redhat.com>

	Improve tree dumps.
	* c-pretty-print.c, tree-pretty-print.c (dump_c_node): Handle
	integers larger than a host word.
	(op_prio): Handle INIT_EXPR.
	* gimplify.c (simplify_bind_expr): Set TREE_SIDE_EFFECTS and type
	of void_type_node on the COMPOUND_EXPRs as we walk.
	* tree-simple.c (right_assocify_expr): Propagate the type from cur
	rather than rhs.

	* c-decl.c (finish_function): Call c_genericize instead of
	simplify_function_tree.
	* c-simplify.c (c_genericize): New function.
	(simplify_stmt_expr): Just genericize.
	(simplify_compound_literal_expr): Likewise.
	(c_build_bind_expr): Don't build a block for an artificial decl.
	(simplify_decl_stmt): Add the variable to the temps list iff it's
	artificial.
	(c_simplify_expr): Don't call push/pop_context.
	* c-decl.c (build_compound_literal): Set DECL_ARTIFICIAL.
	* c-tree.h: Declare c_genericize.

	* c-simplify.c (tree_build_scope): Remove.

	Remove INIT_EXPR from GIMPLE.
	* c-simplify.c (simplify_decl_stmt): Use MODIFY_EXPR.
	* gimplify.c (simplify_bind_expr): Likewise.
	(simplify_modify_expr): Convert INIT_EXPR to MODIFY_EXPR.

	* c-simplify.c (create_tmp_var_1): Drop; change all users to call
	create_tmp_var.
	(gimple_add_tmp_var): Now adds to the external temps list if
	available, or directly to the function otherwise.

	Avoid gratuitous unused warnings.
	* c-simplify.c (simplify_expr_stmt): Check TREE_SIDE_EFFECTS
	directly.  Also check for explicit conversions to void.
	(expr_has_effect): Remove.

	* Makefile.in (OBJS): Remove tree-dchain.o.

	* stor-layout.c (variable_size): We don't care about
	global_bindings_p if the frontend doesn't want a list of the
	expressions.

2002-11-13  Diego Novillo  <dnovillo@redhat.com>

	* toplev.c (parse_options_and_default_flags): Enable SSA-CCP by
	default with optimization >= 1.
	* tree-dfa.c (find_refs_in_expr): Clobber '*.GLOBAL_VAR', not
	'GLOBAL_VAR'.
	(collect_dfa_stats): Collect statistics on '*.GLOBAL_VAR'.
	(compute_may_aliases): Make sure that variable is an INDIRECT_REF.
	(may_alias_p): GLOBAL_VAR should alias INDIRECT_REFs.
	Only check addressability on VAR_DECLs.
	(find_may_aliases_for): Make sure argument is an INDIRECT_REF.
	* tree-flow-inline.h (indirect_var): Call DECL_P.
	(set_indirect_var): Call DECL_P.
	Create annotation if it doesn't exist.
	(create_indirect_ref): Move from tree-dfa.c.
	* tree-flow.h (create_indirect_ref): Declare.
	* tree-ssa-ccp.c (visit_phi_node): Avoid debugging dump from
	accessing uninitialized data.
	* tree-ssa.c (init_tree_ssa): Create an INDIRECT_REF node for
	.GLOBAL_VAR.

2002-11-12  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (delete_tree_cfg): Call free_aux_for_blocks.
	Call free_basic_block_vars.

	* gimplify.c (simplify_expr): VA_ARG_EXPR nodes are in GIMPLE form
	already.
	Gimplify BIT_FIELD_REF nodes.
	(simplify_call_expr): Update comment.
	* tree-dfa.c (find_refs_in_expr): VA_ARG_EXPR nodes make no
	data references.
	Handle BIT_FIELD_REF nodes.
	* tree-pretty-print.c (op_prio): Don't write an error message if
	the operand is not recognized.
	* tree-simple.c (is_simple_unary_expr): Handle BIT_FIELD_REFs.
	(is_simplifiable_builtin): Only return false for MD builtins.

2002-11-08  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (cleanup_switch_expr_graph): Handle edges going to
	EXIT_BLOCK_PTR.
	(first_stmt): Return NULL for ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR and
	INVALID_BLOCK.
	* tree-dfa.c (find_refs_in_expr): Call mark_not_simple.

2002-11-07  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa.o, tree-cfg.o, tree-dfa.o): Add dependency
	on function.h
	* tree-cfg.c: Include function.h.
	(build_tree_cfg): Set dump_file to NULL after closing the file.
	(remove_tree_bb): Don't dump warnings about statements being
	removed.
	(dump_tree_cfg): Use current_function_name.
	Check that the flowgraph is not empty before dumping the function
	body.
	(tree_cfg2dot): Use current_function_name.
	* tree-dfa.c: Include function.h
	(dump_dfa_stats): Use current_function_name.
	* tree-optimize.c (optimize_function_tree): Set dump_file to NULL
	after closing the file.
	* tree-pretty-print.c (dump_generic_node): Make sure that the
	flowgraph exists before displaying block boundaries.
	* tree-ssa-ccp.c (tree_ssa_ccp): Set dump_file to NULL after
	closing the file.
	* tree-ssa.c: Include function.h.
	(build_tree_ssa): Set tree_ssa_dump_file to NULL after closing the
	file.
	(dump_reaching_defs): Use current_function_name.
	(dump_tree_ssa): Likewise.

2002-11-07  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (successor_block): Return EXIT_BLOCK_PTR if no
	successor can be found while walking the nesting chain.

2002-11-07  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c: Fix some formatting in code and comments.
	(set_bb_for_stmt): Move from tree-flow-inline.h
	* tree-dfa.c: Fix some formatting in code and comments.
	* tree-flow-inline.h: Likewise.
	* tree-flow.h: Likewise.
	* tree-ssa.c: Likewise.

2002-11-06  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa-ccp.o): Add dependency on tree-inline.h
	* tree-cfg.c (find_taken_edge): New function.
	(cleanup_cond_expr_graph): Call it.
	(disconnect_unreachable_case_labels): Call it.

	* tree-dfa.c (struct clobber_data_d): Remove field
	parent_expr_p.  Update all users.
	(find_refs_in_expr): Remove argument parent_expr_p.  Update all users.
	(create_ref): Remove arguments parent_expr_p and operand_p.  Update
	all users.
	(replace_ref_in): Rename from replace_ref_operand_with.  Update all
	users.  Find the operand in the statement and replace it with a new
	operand.
	(replace_ref_r): New local function.
	(is_killing_def): Also handle V_PHI references.
	(output_ref): Move from tree-flow-inline.h

	* tree-flow-inline.h (ref_expr): Remove.  Update all users.
	(restore_ref_operand): Remove.  Update all users.
	(set_output_ref): Remove.  Update all users.
	(is_assignment_stmt): New function.
	(is_may_def, is_may_use, is_partial_def, is_partial_use,
	is_volatile_def, is_volatile_use, is_default_def,
	is_clobbering_def, is_initializing_def, is_relocating_def,
	is_addressof_use, is_pure_use): Check reference type first.
	(is_pure_def): New function.

	* tree-flow.h (struct tree_ref_common): Remove fields expr_p,
	operand_p and orig_operand.  Update all users.
	(struct tree_ann_d): Remove field output_ref.  Update all users.

	* tree-ssa-ccp.c: Include tree-inline.h.
	(simulate_block): Simulate every statement in the block, not its
	references
	(simulate_def_use_chains): Simulate statements containing uses
	reached by the definition.
	(substitute_and_fold): Traverse statements, not references.
	Call fold_stmt.
	(visit_phi_node): If PHI node is marked volatile, assume varying.
	(visit_stmt): Rename from visit_expression_for.  Work on a
	statement, not a reference.
	(visit_assignment): Rename from visit_assignment_for.  Work on a
	statement, not a reference.
	(visit_cond_stmt): Rename from visit_condexpr_for.  Work on a
	statement, not a reference.
	(evaluate_stmt): Rename from evaluate_expr.  Work on a statement,
	not a reference.
	(initialize): Initialize special definitions to varying.
	(replace_uses_in): Work on a statement, not an expression.
	(fold_stmt): Rename from ccp_fold.  Work on a statement, not an
	expression.
	(get_rhs): New local function.
	(set_rhs): New local function.

2002-11-06  Daniel Berlin  <dberlin@dberlin.org>

	* tree-flow.h: Prototype set_bb_for_stmt, last_stmt_ptr,
	add_ephi_arg, num_ephi_args, set_ephi_arg, ephi_arg.
	(enum tree_ref_type): Add E_LEFT, E_KILL, E_EXIT.

	* tree-cfg.c (set_bb_for_stmt): Move to tree-flow-inline.h.
	(last_stmt_ptr): New function, gives pointer to last statement in
	bb.

	* tree-flow-inline.h: Add exprref_processed, exprref_processed2,
	expruse_phi, num_ephi_args, set_ephi_arg, ephi_arg, add_ephi_arg.

	* tree-dfa.c (tree_ref_structure): Handle E_{LEFT,KILL,EXIT}.
	(ref_type_name): Ditto.
	(tree_ref_size): Ditto.
	(dump_ref): E_PHI's phi_args is now a varray of phi_arg structs.
	(add_ephi_arg): New function.
	(remove_ref_from_list): Fix crash when node not found.
	(compute_may_aliases): Add timing for points-to analysis.

	* timevar.def: Add TV_TREE_PTA.

	* tree-ssa-pre.c: Start of massive cleanup and rewriting (in
	preparation for load/store PRE). No more uses of ref_expr, proper
	call handling. Started removing unnecessary structures and lists,
	started removing redundant and inefficient operations (IE O(n^2)
	loops to process all phi operands, etc).  Basic load PRE implemented.
	Code may look ugly due to large pieces commented out waiting for DFA
	updating of refs to redo.

2002-11-05  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (create_block_annotations): New local function.
	(create_bb_ann): Remove.  Update all users.
	(parent_array): New local variable.
	(build_tree_cfg): Initialize it.
	Call create_block_annotations.
	(create_bb): Call alloc_block instead of ggc_alloc to allocate
	memory for basic blocks.
	Don't call set_parent_block.
	Grow array parent_array.
	(dump_tree_cfg): Change meaning of second argument.  Make it accept
	any of the TDF_* flags defined in tree.h.
	(delete_tree_cfg): Call free_aux_for_blocks.
	Free array parent_array.
	* tree-flow-inline.h (get_filename): New function.
	(is_exec_stmt): return false if T is error_mark_node.
	* tree-flow.h (struct var_ref_d): Mark alias_imm_rdefs field for
	garbage collection.
	(get_filename): Declare.
	(struct bb_ann_d): Rename from bb_ann_def.
	Remove garbage collection markers.
	(referenced_vars): Mark for garbage collection.
	(global_var): Likewise.
	(create_bb_ann): Remove.
	* tree-optimize.c (optimize_function_tree): Remove CFG and SSA
	after debugging dumps.

	* diagnostic.h (print_generic_stmt): Rename from print_generic_tree.
	Update all users.
	(print_generic_expr): Rename from print_generic_node.  Update all
	users.
	(PPF_BRIEF): Remove.  Update all users.
	(PPF_BLOCK): Remove.  Update all users.
	(PPF_LINENO): Remove.  Update all users.
	(PPF_IS_STMT): Remove.  Update all users.
	* flags.h (flag_dump_tree_all_ssa): Remove.  Update all users.
	* toplev.c (f_options): Remove entry for -fdump-tree-all-ssa.
	Update all users.
	* tree-dump.c (dump_enable_all): Rename from dump_enable_all_ssa.
	Update all users.
	(dump_files): Add entry for -fdump-tree-all.
	(dump_option_value_info): Remove entries for TDF_REFS and
	TDF_RDEFS.
	Add entry for TDF_BLOCK.
	(dump_switch_p): If -fdump-tree-all was given, call dump_enable_all.
	* tree-pretty-print.c (PPF_BRIEF): Remove.  Update all users.
	(PPF_BLOCK): Remove.  Update all users.
	(PPF_LINENO): Remove.  Update all users.
	(PPF_IS_STMT): Remove.  Update all users.
	(dumping_stmts): New local variable.
	(print_generic_stmt): Rename from print_generic_tree.  Update all
	users.
	Set dumping_stmts to true.
	(print_generic_expr): Rename from print_generic_node.  Update all
	users.
	Set dumping_stmts to false.
	(maybe_init_pretty_print): Set last_bb to -1.
	(dump_block_info): If available, dump file and line number
	information for the first statement in the basic block.
	* tree-ssa.c (build_tree_ssa): Dump referenced variables and
	reaching definition information if -details is given.
	* tree.h (enum tree_dump_index): Rename TDI_all to TDI_tu.  Update
	all users.
	Add new index TDI_all.
	(TDF_DETAILS): Change value.
	(TDF_REFS): Remove.  Update all users.
	(TDF_RDEFS): Remove.  Update all users.
	(TDF_BLOCK): Define.
	* doc/invoke.texi: Update documentation for -fdump-tree-... flags.

2002-11-05  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mudflap_enqueue_decl, _constant): Use
	size_in_bytes, not c_size_in_bytes.
	(mf_init_extern_trees): Import uintptr_t typedef node from
	mf-runtime.h.

2002-11-01  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (remove_tree_bb): Add new argument remove_stmts.
	Update all callers.
	(make_ctrl_stmt_edges): Add an edge to the body of a SWITCH_EXPR.
	(make_cond_expr_edges): Don't try to linearize the if() subgraph.
	(make_case_label_edges): Don't remove the fallthru edge from the
	entry block to the switch() subgraph.
	(cleanup_tree_cfg): Call cleanup_control_flow.
	(remove_unreachable_blocks): Remove blocks of compound structures
	before removing the entry block.
	(remove_blocks): New local function.
	(blocks_unreachable_p): New local function.
	(is_nonlocal_label_block): New local function.
	(find_subblocks): New local function.
	(is_parent): New local function.
	(gsi_remove): New function.
	(remove_stmt): New local function.
	(cleanup_control_flow): New local function.
	(cleanup_cond_expr_graph): New local function.
	(cleanup_switch_expr_graph): New local function.
	(disconnect_unreachable_case_labels): New local function.

	* tree-dfa.c (remove_decl): New function.
	(find_decl_location): New function.

	* tree-flow.h (gsi_remove): Declare.
	(remove_decl): Declare.
	(find_decl_location): Declare.

	* tree-ssa-ccp.c (optimize_unexecutable_edges): Remove.  Update all
	users.
	(ssa_ccp_df_delete_unreachable_insns): Remove.  Update all users.
	(tree_ssa_ccp): Call print_generic_tree with PPF_BLOCK.

2002-10-31  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (create_indirect_ref): New local function.
	(find_refs_in_expr): Call it.
	(create_ref): Check E_* reference types with == instead of &.
	(dump_ref): Likewise.
	(count_tree_refs): Likewise.
	* tree-ssa.c (set_ssa_links): Update documentation comment for
	save_chain.

2002-10-31  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (remove_tree_bb): Don't walk beyond the end of the
	basic block.

2002-10-26  Daniel Berlin  <dberlin@dberlin.org>

	* flags.h: Remove flag_tree_points_to from here.
	* toplev.c: Include tree-alias-common.h.
	(flag_tree_points_to): Now of type enum pta_type, rather than
	int.
	(lang_independent_options): Remove flag_tree_points_to.
	(display_help): Display help for tree-points-to here.
	(decode_f_option): Allow selecting of points-to algorithm.
	* tree-alias-common.c (varmap): Removed.
	(alias_annot): Changed to a hash table.  Update all functions
	appropriately.
	(FIELD_BASED): New macro, switches between field-based analysis,
	and field-independent analysis (field-based isn't quite done yet).
	(alias_annot_entry): New, used in hash table.
	(annot_eq): New function.
	(annot_hash): New function.
	(find_func_aliases): Handle casts, fix indendation.
	(splaycount): Removed.
	(splay_tree_count): Removed.
	(display_points_to_set): Removed.
	(splay_tree_size): Removed.
	(alias_get_name): New function.
	(ptr_may_alias_var): Globals are a bit funky to handle.
	* tree-alias-steen.c: Use alias_get_name, rather than
	print_generic_node.
	(steen_simple_assign): Handle assignment of PTF's.
	(test_assign): Remove.
	* tree-alias-common.h (enum pta_type): New.
	(alias_get_name): New.
	(flag_tree_points_to): New.

2002-10-26  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (cleanup_tree_cfg): Uncomment call to
	compact_blocks.

2002-10-26  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-pretty-print.o): Depend on $(TREE_FLOW_H)
	* basic-block.h (BB_COMPOUND_ENTRY): Rename from BB_CONTROL_ENTRY.
	* diagnostic.h (dump_generic_tree): Remove extern declaration.
	(print_generic_node_brief): Remove.  Update all users.
	(PPF_BRIEF): Declare.
	(PPF_BLOCK): Declare.
	(PPF_LINENO): Declare.
	(PPF_IS_STMT): Declare.
	* tree-pretty-print.c (PPF_BRIEF): New constant.
	(PPF_BLOCK): New constant.
	(PPF_LINENO): New constant.
	(PPF_IS_STMT): New constant.
	(dump_block_info): New local function.
	(last_bb): New local variable.
	(dump_generic_tree): Remove unused function.
	(print_generic_tree): Add third argument 'flags'.  Update all
	users.
	(print_generic_node_brief): Remove.  Update all users.
	(print_generic_node): Add third argument 'flags'.  Update all
	users.
	(dump_generic_node): Add third argument 'flags'.  Update all users.
	If PPF_BLOCK is set, display basic block information at basic block
	boundaries.
	If PPF_IS_STMT is set, change the way COMPOUND_EXPR nodes are
	rendered.
	If PPF_BRIEF is set, don't show the bodies of control statements.
	(print_declaration):

	* toplev.c (process_options): Update comment for -fdisable-simple.

	* tree-cfg.c (remove_tree_bb): Rename from tree_delete_bb.
	(latch_block): Move declaration to tree-flow.h.  Declare extern.
	(make_blocks): Start a new block after finding a control flow
	altering statement.
	(make_loop_expr_blocks): Set the loop entry block to be the parent
	block for the loop latch block.
	(cleanup_tree_cfg): Rename from tree_cleanup_cfg.
	Call compact_blocks.
	(remove_tree_bb): Rename from tree_delete_bb.  Update all users.
	(dump_tree_bb): Rename from dump_tree_bb.  Update all users.
	Dump information about loop latch blocks.
	(debug_tree_bb): Rename from tree_debug_bb.  Update all users.
	(debug_tree_cfg): Rename from tree_debug_cfg.  Update all users.
	(dump_tree_cfg): Rename from tree_dump_cfg.  Update all users.
	By default, dump the function with markers for basic block
	boundaries.
	(successor_block): If we can't find a successor following the
	parent chain, return the next block in the linked list of blocks.
	Update documentation comments.
	(stmt_starts_bb_p): Don't let RETURN_EXPR start a new block.
	(is_latch_block): New function.
	(first_exec_stmt): Don't treat BIND_EXPR nodes as a special case.
	(first_stmt): Return NULL_TREE if the block does not exist.
	(last_stmt): Likewise.

	* tree-dfa.c (find_tree_refs): Rename from tree_find_refs.  Update
	all users.
	(find_refs_in_stmt): Handle BIND_EXPR nodes.
	(rli_start): Move from tree-flow-inline.h
	(rli_start_last): Likewise.
	(rli_start_at): Likewise.
	(rli_delete): Likewise.

	* tree-flow-inline.h (gsi_start_bb): Handle NULL blocks.
	(ref_list_is_empty): New function.
	* tree-flow.h (rli_start): Change declaration to extern.
	(rli_start_last): Likewise.
	(rli_start_at): Likewise.
	(rli_delete): Declare.
	(latch_block): Declare.
	(is_latch_block): Declare.
	(get_last_ref): Change to inline declaration.
	(get_first_ref): Likewise.
	(ref_list_empty): Declare.

	* tree-optimize.c (delete_tree_ssa): Remove declaration.

	* tree-ssa-dce.c (mark_control_parent_necessary): Call gsi_step_bb
	instead of gsi_step.
	(tree_ssa_eliminate_dead_code): Likewise.

	* tree-ssa.c (compute_tree_rdefs): Rename from compute_tree_rdefs.
	Update all users.

2002-10-22  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (struct dfa_stats_d): Add field size_tree_refs.
	(tree_ref_size): New function.
	(create_ref): Call it.
	(dump_dfa_stats): Get total size from dfa_stats.size_tree_refs.
	(count_tree_refs): Call tree_ref_size.
	* tree-flow-inline.h (get_last_ref): New function.
	(get_first_ref): New function.
	* tree-flow.h (struct var_ref_d): Rename from var_ref.
	(struct var_def_d): Rename from var_def.
	(struct var_phi_d): Rename from var_phi.
	(struct var_use_d): Rename from var_use.
	(struct expr_phi_d): Rename from expr_phi.
	(struct expr_use_d): Rename from expr_use.
	* tree-ssa-ccp.c (tree_ssa_ccp): Call get_last_ref.

2002-10-21  Daniel Berlin  <dberlin@dberlin.org>

	* timevar.def: Add TV_TREE_{PRE,CCP,DCE,CFG,SSA}} timevars.

	* tree-optimize.c (optimize_function_tree): Push and pop timevars
	for the tree optimizers.

2002-10-21  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (OBJS): Move tree-mudflap.o ...
	(C_AND_OBJC_OBJS): ... here.

2002-10-21  Diego Novillo  <dnovillo@redhat.com>

	* tree-flow-inline.h (rli_start): New function.
	(rli_start_rev): New function.
	(rli_start_at): New function.
	(rli_after_end): New function.
	(rli_step): New function.
	(rli_step_rev): New function.
	(rli_ref): New function.
	* tree-flow.h (struct ref_list_iterator): Declare.
	(FOR_REF_BETWEEN, FOR_EACH_REF, FOR_EACH_REF_REV): Replace with new
	rli_* iterator functions.  Update all users.

2002-10-21  Frank Ch. Eigler  <fche@redhat.com>

	* tree-cfg.c (make_blocks): Ignore TRY_FINALLY_EXPR and
	TRY_CATCH_EXPR.
	* tree-mudflap.c (mx_register_decls): Ignore local decls
	of extern variables of unknown size.

2002-10-20  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (repair_injury): DTRT, rather than abort.

	* tree-dfa.c (ref_type_name): E_* don't have these modifier
	fields, but may have the same bits set, so don't print the
	modifiers on them.

	* gimplify.c (create_tmp_var): New function, wraps calls to
	create_tmp_var_1 with pushing/popping of right context.
	All internal gimplify.c now use create_tmp_var_1.
	(create_tmp_var_noc): New function, create the var without
	pushing/popping, and without exposing internals of create_tmp_var_1.
	Only one use of this.

	* tree-simple.h (create_tmp_var_noc): New prototype.

	* c-simplify.c (simplify_stmt_expr): create_tmp_var changed to
	create_tmp_var_noc.

	* tree-ssa-pre.c: Add WAITING_FOR_DFA_UPDATE around code waiting for DFA
	functions to keep refs up to date.
	(add_call_to_ei): occurs and occurstmts is now an
	array of tree pointers, not trees. Update approriately.
	(insert_occ_in_preorder_dt_order_1): Ditto.
	(tree_perform_ssapre): Ditto.
	(find_use_for_var): Removed function.
	(orig_expr_map): Removed global, removed uses.
	(struct ei): Added injfixups member.
	(is_strred_cand): STRIP_WFL the expression.
	(calculate_increment): Ditto.
	(is_injuring_def): Ditto.
	(defs_y_dom_x): Ditto. Also account for fact that y is now a full
	expression, not just an RHS.
	(defs_match_p): Ditto (t2 is no longer just an RHS).
	(finalize_1): Do insertion by replacement.
	(repair_injury): Clean up, do insertion by replacement.
	(find_reaching_def_of_var): Do backwards search in a cleaner way.
	(update_ssa_for_new_use): Change how we do replacement.
	(code_motion): Insertion by replacement. Print EXPR_WFL_LINENO, not
	STMT_LINENO.
	(pre_part_1_trav): Just create_tmp_var will now suffice.

2002-10-18  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_refs_in_expr): Change type of second argument to
	enum tree_ref_type.  Add third argument ref_mod.  Update all users.
	(create_ref): Add third argument ref_mod.  Decode bitmask to set
	the individual bitfields in the new reference.
	* tree-flow-inline.h (is_may_ref): New function.
	(is_may_def): New function.
	(is_may_use): New function.
	(is_partial_ref): New function.
	(is_partial_def): New function.
	(is_partial_use): New function.
	(is_volatile_ref): New function.
	(is_volatile_def): New function.
	(is_volatile_use): New function.
	(is_default_def): New function.
	(is_clobbering_def): New function.
	(is_initializing_def): New function.
	(is_relocating_def): New function.
	(is_addressof_use): New function.
	(is_pure_use): New function.
	* tree-flow.h (V_DEF, V_USE, V_PHI, E_PHI, E_USE, E_KILL): Redefine
	inside enum tree_ref_type.  Update all users.
	(enum tree_ref_type): Define.
	(TRM_DEFAULT, TRM_CLOBBER, TRM_MAY, TRM_PARTIAL, TRM_INITIAL,
	TRM_VOLATILE, TRM_RELOCATE): Rename from M_*.  Update all users.
	(struct tree_ref_common): Change type of field 'type' to enum
	tree_ref_type.  Update all users.
	(struct var_ref): Add bitfields 'm_may', 'm_partial' and 'm_volatile'.
	(struct var_def): Add bitfield 'm_default', 'm_clobber', 'm_initial'
	and 'm_relocate'.
	(struct var_use): Add bitfield 'm_addressof'.
	(ref_type): Change return type to enum tree_ref_type.  Update all
	users.
	(create_ref): Add new argument ref_mod.  Update all users.
	(function_may_recurse_p): Change return type to bool.  Update all
	users.
	(ref_type_name): Change argument type to tree_ref.  Update all
	users.
	(validate_ref_type): Remove.

2002-10-18  Diego Novillo  <dnovillo@redhat.com>

	* cp/Make-lang.in (CXX_C_OBJS): Remove tree-cfg.o, tree-dfa.o,
	tree-optimize.o, tree-ssa.o, tree-ssa-pre.o, gimplify.o, tree-simple.o,
	tree-alias-steen.o, tree-alias-ecr.o, tree-alias-type.o,
	disjoint-set.o, tree-ssa-ccp.o, tree-dchain.o, tree-alias-common.o,
	and tree-ssa-dce.o.

2002-10-17  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (TREE_FLOW_H): Add bitmap.h, basic-block.h,
	hard-reg-set.h and tree-simple.h.  Update all users.
	(C_AND_OBJC_OBJS): Move tree-cfg.o, tree-dfa.o,
	tree-ssa.o, tree-optimize.o, c-simplify.o, c-call-graph.o,
	tree-simple.o, simple-break-elim.o, simple-goto-elim.o, tree-dchain.o,
	tree-ssa-pre.o, tree-alias-type.o, tree-mudflap.o, gimplify.o,
	tree-alias-ecr.o, tree-alias-common.o, tree-alias-steen.o,
	disjoint-set.o, tree-ssa-ccp.o and tree-ssa-dce.o ...
	(OBJS): ... here.
	(gimplify.o): Add dependency on $(TREE_FLOW_H).
	(tree-pretty-print.o): New rule.
	(GTFILES): Add tree-flow.h
	* c-config-lang.in (gtfiles): Remove tree-flow.h
	* c-simplify.c (copy_if_shared_r, unmark_visited_r,
	unshare_all_trees, mark_not_simple): Move ...
	* gimplify.c: ... here.
	Include tree-flow.h
	* tree-flow.h: Include hard-reg-set.h.

	* c-common.h (print_c_tree, print_c_node, print_c_node_brief,
	debug_c_tree, debug_c_node, debug_c_node_brief): Move declarations
	from diagnostic.h.
	* c-call-graph.c (construct_call_graph): Call get_name.
	(print_callee): Likewise.
	* c-pretty-print.c (print_declaration): Declare static.
	(print_function_decl): Likewise.
	(print_struct_decl): Likewise.
	(dump_c_tree): Likewise.
	(dump_c_node): Likewise.
	* diagnostic.h (dump_generic_tree, dump_generic_node,
	print_generic_tree, print_generic_node, print_generic_node_brief):
	Declare.
	* tree-pretty-print.c: New file.
	* c-decl.c: Replace calls to print_c_node with print_generic_node.
	* tree-alias-common.c: Likewise.
	* tree-alias-steen.c: Likewise.
	* tree-cfg.c: Likewise.
	* tree-dfa.c: Likewise.
	* tree-mudflap.c: Likewise.
	* tree-optimize.c: Likewise.
	* tree-ssa-ccp.c: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-ssa-dce.c: Likewise.
	Don't include c-common.h nor c-tree.h
	(tree_ssa_eliminate_dead_code): Don't call COMPOUND_BODY.
	Replace ASM_STMT with ASM_EXPR.  Don't check for EXPR_STMT.

2002-10-17  Daniel Berlin  <dberlin@dberlin.org>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (remove_bb_ann): Remove.  Update all users.
	(delete_tree_cfg): Set bb->aux to NULL in all basic blocks.
	* tree-dfa.c: Remove extern declaration for tree_find_refs.
	(create_ref_list): Allocate new list with ggc_alloc.
	(empty_ref_list): Just set first and last element to NULL.
	(delete_ref_list): Remove.  Update all users.
	(remove_ref_from_list): Don't call free.
	(add_ref_to_list_begin): Allocate new node with ggc_alloc.
	(add_ref_to_list_end): Likewise.
	(add_ref_to_list_after): Likewise.
	(create_ref): Call BITMAP_GGC_ALLOC.
	(remove_tree_ann): Remove.  Update all users.
	(tree_ref_structure): New function.
	* tree-flow.h (edge, basic_block): Forward declare if necessary.
	(struct ref_list_node): Mark for garbage collection.
	(struct ref_list_priv): Likewise.
	(struct tree_ref_common): Likewise.
	(struct var_ref): Likewise.
	(struct var_def): Likewise.
	(struct var_phi): Likewise.
	(struct var_use): Likewise.
	(struct phi_node_arg_d): Likewise.
	(struct expr_ref_common): Likewise.
	(struct expr_phi): Likewise.
	(struct expr_use): Likewise.
	(union tree_ref_d): Likewise.
	(struct tree_ann_d): Likewise.
	(struct bb_ann_def): Likewise.
	(referenced_vars): Likewise.
	(global_var): Likewise.
	(enum tree_ref_structure_enum): New.
	(call_sites): Remove unused function.
	* tree-inline.c (copy_tree_r): Copy the 'ann' field from tree_common.
	* old-tree-inline.c (copy_tree_r): Likewise.
	* tree-ssa.c (added): Mark for garbage collection.
	(in_work): Likewise.
	(work_stack): Likewise.
	(delete_tree_ssa): Set global_var to NULL_TREE.
	* tree.h (struct tree_ann_d): Forward declare.
	(struct tree_common): Rename field 'aux' to 'ann'.  Update all
	users.  Don't mark it 'skip' for garbage collection.

2002-10-16  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (compute_may_aliases): Call create/delete_alias_vars
	if flag_tree_points_to is on.
	(may_alias_p): Use points-to info if user asked us to generate it.

	* tree-optimize.c (optimize_function_tree): Don't call
	create_alias_vars here.

2002-10-16  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (make_cond_expr_edges): If the conditional has known
	value, only make the edge to the corresponding branch.
	(tree_delete_bb): Write a warning to the dump file when removing
	blocks with executable statements.
	(first_exec_stmt): Skip over empty BIND_EXPR blocks.

	* tree-dfa.c (find_refs_in_expr): Don't look for references in non
	GIMPLE statements.
	(remove_tree_ann): Clear the annotation with memset.
	(collect_dfa_stats_r): Don't call tree_annotation.
	(find_may_aliases_for): Avoid adding the same alias more than once.
	(may_alias_p): Fix comment grammar.

	* tree-flow-inline.h (is_exec_stmt): New function.
	* tree-flow.h (FOR_EACH_REF): Guard against NULL lists.
	(FOR_EACH_REF_REV): Likewise.
	(is_exec_stmt): Declare.

	* tree-ssa-ccp.c (visit_phi_node): Reformat debug dumping output.
	(visit_expression_for): Move check for clobbering definitions
	before check for NULL expressions.
	(visit_condexpr_for): Reformat debug dumping output.
	(set_lattice_value): Remove stale comments.
	(replace_uses_in): Don't clear TF_FOLDED flag from expression.

	* tree-ssa.c (add_phi_node): If possible, associate the PHI node to
	a statement.
	(create_default_def): Create initial declarations for static
	variables with DECL_INITIAL set.
	(delete_tree_ssa): Remove annotations from variables.

2002-10-16  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-type.c (alias_tvar_new_with_aterm): New function.
	Update all allocations to allocate right type, rather than the union.
	Update to use macros to access members of alias_typevar.

	* tree-alias-type.h: Split alias_typevar into a common, an ECR, and
	an aterm, update all users.
	Add macros to access members of union.

	* tree-alias-common.c (create_alias_var): Handle function_decl's
	properly (needed for proper handling of function pointers).
	Updates for macros to access typevars.
	Fix some indentation.

	* tree-alias-steen.c: Updates for macros to access typevars.

2002-10-16  Frank Ch. Eigler  <fche@redhat.com>

	* c-decl.c (c_expand_body): Enable mudflap, only for gimple.
	* c-pretty-print.c (dump_c_node): Render try/catch/finally exprs.
	(op_prio): Accept BIND_EXPRs.
	* gcc.c (cpp_unique_options): Make -fmudflap -include mf-runtime.h.
	* toplev.c (process_options): Complain on -fmudflap -fdisable-simple.
	* tree-mudflap.c (*): Reorganize for generic/gimple operation.
	(mf_init_extern_trees): Extract decl nodes from -include'd file.
	(mf_external_ref, mf_decl_extern_trees): Removed; updated callers.
	(mf_offset_expr_of_array_ref): Don't bother store index type as
	TREE_PURPOSE.
	(mf_build_check_statement_for): Use GIMPLE tree types and builders.
	(mx_register_decls): New function, replacing mx_register_decl.
	(mx_xfn_xform_decls): Support only GIMPLE input tree types.
	(mf_flush_enqueued_calls): Clean up enqueued call statements.

2002-10-14  Diego Novillo  <dnovillo@redhat.com>

	* toplev.c (parse_options_and_default_flags): Undo local
	hack that slipped in the previous commit.

2002-10-14  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (c-decl.o): Add dependency on diagnostic.h.
	* c-decl.c: Include diagnostic.h
	(c_expand_body): Call get_name.

	* basic-block.h (struct basic_block_def): Rename head_tree to
	head_tree_p and end_tree to end_tree_p.  Change type to tree *.
	Update all users.
	(BLOCK_HEAD_TREE): Remove.  Update all users.
	(BLOCK_END_TREE): Remove.  Update all users.
	* tree-cfg.c (build_tree_cfg): Return if function body is empty.
	(make_blocks): Change first argument to tree *.  Update all users.
	(make_bind_expr_blocks): Likewise.
	(make_loop_expr_blocks): Likewise.
	(make_cond_expr_blocks): Likewise.
	(make_switch_expr_blocks): Likewise.
	(create_bb): Likewise.
	(first_exec_block): Likewise.
	(first_exec_stmt): Likewise.
	(tree_delete_bb): Use a gimple statement iterator to unmap
	statements.
	(insert_stmt_before): Remove empty function.
	(replace_expr_in_tree): Remove.  Update all users.
	(find_expr_in_tree_helper): Likewise.
	(find_expr_in_tree): Likewise.
	(first_stmt): Call STRIP_NOPS.
	(last_stmt): Call STRIP_NOPS.

	* tree-dfa.c (struct clobber_data_d): Rename parent_stmt to
	parent_stmt_p and parent_expr to parent_expr_p.  Change types to
	tree *.  Update all users.
	(find_refs_in_stmt): Change first argument type to tree *.  Update
	all users.
	(find_refs_in_expr): Chnage arguments parent_stmt and parent_expr
	to tree *.  Update all users.
	(create_ref): Don't add the same reference twice on the same list
	when parent_stmt and parent_expr are the same node.
	Don't set output_ref when the parent statement is not in GIMPLE
	form.
	(replace_ref_operand_with): Move from tree-flow-inline.h
	(replace_ref_expr_with): New function.
	(replace_ref_stmt_with): New function.
	(create_tree_ann): Abort if trying to annotate certain nodes.
	Don't create an empty ref list.
	In the presence of WFL or NOPS wrappers, add the annotation to the
	inner node.
	(dump_ref): Don't call tree_annotation to access the tree
	annotation.

	* tree-flow.h (struct tree_ref_common): Rename field stmt to stmt_p
	and field expr to expr_p.  Change types to tree *.  Update all
	users.
	(replace_ref_expr_with): Declare.
	(replace_ref_stmt_with): Declare.
	(insert_stmt_before, insert_stmt_after, replace_expr_in_tree,
	find_expr_in_tree): Remove.
	* tree-flow-inline.h (ref_expr): Return NULL_TREE if expr_p is
	NULL.
	(ref_stmt): Return NULL_TREE if stmt_p is NULL.
	(tree_annotation): Call STRIP_WFL and STRIP_NOPS before returning
	the annotation.
	(add_tree_ref): Remove consistency checks.  Create an empty list
	the first time.
	(get_lineno): Return -1 on NULL_TREE.
	(set_output_ref): Remove consistency.
	(set_tree_flag): Likewise.
	(clear_tree_flag): Likewise.
	(reset_tree_flags): Likewise.
	* tree-simple.h (gimple_stmt_iterator): Rename ptr to tp.  Change
	type to tree *.  Update all users.
	(gsi_start): Change argument type to tree *.  Update all users.
	(gsi_stmt_ptr): New function.
	(gsi_container): New function.

	* tree-optimize.c (optimize_function_tree): Don't test fnbody for
	NULL.
	Re-enable optimizers.
	* tree-ssa-ccp.c: Update documentation comments.
	Don't include c-common.h and c-tree.h.
	(tree_ssa_ccp): Don't call COMPOUND_BODY.
	(ccp_fold): New private function.
	(substitute_and_fold): Call it.
	Call replace_ref_expr_with.
	Set TF_FOLDED flag on the statement, not the expression.
	(visit_assignment_for): Call STRIP_NOPS and STRIP_WFL.
	(evaluate_expr): Call ccp_fold.  Only use the RHS of the simplified
	value in the case of MODIFY_EXPR or INIT_EXPR.
	(restore_expr):
	* tree-ssa-dce.c (mark_control_parent_necessary): Use a gimple
	iterator.
	(tree_ssa_eliminate_dead_code): Likewise.
	* tree-ssa-pre.c: Disable and add warning comments for out-of-date
	calls to create_ref, find_refs_in_stmt and replace_expr_in_tree.

2002-10-12  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-type.h  (alias_typevar_def): Add struct aterm
	as a temporary hack for andersen's analysis.
	* tree-alias-common.c (current_alias_ops): New, use it
	instead of referring to steen_alias_ops everywhere.
	(get_alias_var): Use STRIP_WFL.
	(find_func_aliases): Ditto.
	(create_alias_vars): Call init function, move deletion to
	delete_alias_vars.
	(delete_alias_vars): New function, move deletion code to here.
	(get_virtual_var): Removed.
	(ptr_may_alias_var): New function.
	* tree-alias-common.h (struct tree_alias_ops): Add may_alias
	function.
	* tree-alias-steen.c (steen_may_alias): New function.

2002-10-10  Falk Hueffner  <falk.hueffner@student.uni-tuebingen.de>

	* diagnostic.h (dump_c_tree, dump_c_node,
	print_declaration, print_function_decl,
	print_struct_decl): Fix argument types.

2002-10-10  Diego Novillo  <dnovillo@redhat.com>

	* tree.h (struct tree_common): Rename field unused_0 to
	not_gimple_flag.
	(TREE_NOT_GIMPLE): Define.
	* c-simplify.c (mark_not_simple_r): Remove.  Update all users.
	(mark_not_simple): Set TREE_NOT_GIMPLE.
	* gimplify.c (simplify_call_expr): Enable call to mark_not_simple.
	* tree-flow.h (TF_NOT_SIMPLE): Remove.  Update all users.

	* tree-cfg.c (build_tree_cfg): Rename from tree_find_basic_blocks.
	Update all users.
	Find the first executable statement before starting basic block 0.
	(make_blocks): Do not accept TRY_FINALLY_EXPR and TRY_CATCH_EXPR
	nodes.
	(make_edges): Always create an edge from entry to basic block 0.
	(delete_tree_cfg): Rename from delete_cfg.  Update all uses.
	(first_exec_stmt): Return the container for the first statement,
	not the statement itself.

	* tree-dfa.c (tree_find_refs): Re-implement using a GIMPLE
	iterator.
	(find_refs_in_stmt): Handle GIMPLE statements.
	(find_refs_in_expr): Call flags_from_decl_or_type when handling
	CALL_EXPR expressions.
	(create_ref): Call DECL_P.
	(remove_tree_ann): Call tree_annotation.

	* tree-flow-inline.h (gsi_step_bb): Stop if statement is not inside
	a basic block.

	* tree-flow.h (build_tree_cfg): Rename from tree_find_basic_blocks.
	Update all users.
	(delete_tree_cfg): Rename from delete_cfg.
	(tree_find_refs): Declare.
	(build_tree_ssa): Rename from tree_build_ssa.
	(is_upward_exposed): Remove unused function.
	* tree-optimize.c (delete_tree_ssa): Remove declaration.
	(optimize_function_tree): Re-enable SSA builder.
	* tree-simple.h (gsi_container): New function.

	* Makefile.in (tree-ssa.o): Remove dependencies on c-common.h and
	c-tree.h.
	* tree-ssa.c: Don't include c-common.h nor c-tree.h.
	(tree_find_refs): Remove declaration.
	(remove_annotations_r): New local function.
	(build_tree_ssa): Rename from tree_build_ssa.  Update all users.
	(analyze_rdefs): Don't call prep_stmt.
	(is_upward_exposed): Remove unused function.
	(add_phi_node): Don't associate the PHI node to a statement.
	(delete_tree_ssa): Receive the function body as argument.
	Walk the function body removing annotations from every tree.

2002-10-10  Steven Bosscher  <s.bosscher@student.tudelft.nl>

	* tree-ssa-dce (tree_ssa_eliminate_dead_code): Initialize prev to
	NULL_TREE.
	Don't close dump_file until end of function.
	Dump the tree after DCE for -fdump-tree-dce.

2002-10-08  Richard Henderson  <rth@redhat.com>
	    Jason Merrill  <jason@redhat.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-simple.h (gimple_stmt_iterator): New type.
	(gsi_start): New function.
	(gsi_after_end): New function.
	(gsi_step): New function.
	(gsi_stmt): New function.

2002-10-08  Diego Novillo  <dnovillo@redhat.com>

	* calls.c (flags_from_decl_or_type): Make extern.
	(ECF_*): Move ...
	* rtl.h (ECF_*): ... here.
	(flags_from_decl_or_type): Declare.

	* tree.h (COND_EXPR_COND): Define.
	(COND_EXPR_THEN): Define.
	(COND_EXPR_ELSE): Define.
	(LABEL_EXPR_LABEL): Define.
	(optimize_function_tree): Declare.

2002-10-08  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (TREE_FLOW_H): Define.
	(c-decl.o): Remove dependency on tree-optimize.h.
	(tree-alias-steen.o, tree-alias-common.o, tree-ssa.o, tree-ssa-pre.o,
	 tree-cfg.o, tree-dfa.o, tree-optimize.o, c-simplify.o, c-call-graph.o,
	 tree-ssa-dce.o, tree-ssa-ccp.o): Depend on $(TREE_FLOW_H).
	(tree-cfg.o): Remove dependencies on c-tree.h and c-common.h.
	* c-call-graph.c (construct_call_graph): Disable calls to removed
	functions.
	* c-decl.c: Don't include tree-optimize.h.
	(c_expand_body): Enable calls to optimize_function_tree.

	* c-pretty-print.c (dump_c_node): Fix printf warnings.
	Only dump the first node of a COMPOUND_EXPR when brief_dump is set.
	Use COND_EXPR_COND, COND_EXPR_THEN and COND_EXPR_ELSE accessors.
	Only dump the opening brace of a BIND_EXPR when brief_dump is set.

	* tree-cfg.c: Don't include tree-optimize.h, c-common.h and c-tree.h.
	(binding_stack, make_for_stmt_blocks, make_if_stmt_blocks,
	 make_while_stmt_blocks, make_switch_stmt_blocks,
	 make_do_stmt_blocks, create_maximal_bb, make_for_stmt_edges,
	 make_while_stmt_edges, make_do_stmt_edges, make_if_stmt_edges,
	 make_break_stmt_edges, make_continue_stmt_edges, create_loop_hdr,
	 insert_before_ctrl_stmt, insert_before_normal_stmt,
	 insert_after_ctrl_stmt, insert_after_normal_stmt,
	 insert_after_loop_body, tree_split_bb, stmt_ends_bb_p): Remove.
	Update all users.
	(STRIP_CONTAINERS): Define.
	(make_bind_expr_blocks): New local function.
	(make_cond_expr_blocks): New local function.
	(make_loop_expr_blocks): New local function.
	(make_switch_expr_blocks): New local function.
	(make_loop_expr_edges): New local function.
	(make_cond_expr_edges): New local function.
	(make_case_label_edges): New local function.
	(first_exec_block): New local function.
	(make_goto_expr_edges): Rename from make_goto_stmt_edges.
	(make_blocks): Remove arguments COMPOUND_STMT and PREV_CHAIN_P.
	Use gimple_stmt_iterator to iterate over the statements in the
	function.  Create maximal basic blocks during traversal.
	(create_bb): Remove arguments end, prev_chain_p and binding_scope.
	Rename control_parent to parent_block.
	(set_bb_for_stmt): Move from tree-flow.h.
	(make_edges): Don't assume that basic block 0 contains executable
	statements.
	Handle BIND_EXPR nodes.
	(make_ctrl_stmt_edges): Handle LOOP_EXPR, COND_EXPR and
	SWITCH_EXPR.
	(make_exit_edges): Handle GOTO_EXPR, CALL_EXPR and RETURN_EXPR.
	(tree_delete_bb): Call first_stmt and last_stmt.
	(block_invalidates_loop): Call last_stmt.
	(replace_expr_in_tree): Don't dump line number information.
	(find_expr_in_tree_helper): Don't call statement_code_p.
	(tree_dump_bb): Call get_lineno.
	(tree_cfg2dot): Ditto.
	(successor_block): Use a gimple_stmt_iterator to find the first
	executable block after the current one.
	(is_ctrl_stmt): Handle COND_EXPR, LOOP_EXPR and SWITCH_EXPR.
	(is_ctrl_altering_stmt): Call flags_from_decl_or_type to discover
	non-return functions.
	(is_loop_stmt): Handle LOOP_EXPR.
	(is_computed_goto): Handle GOTO_EXPR.
	(stmt_starts_bb_p): Handle CASE_LABEL_EXPR, LABEL_EXPR, RETURN_EXPR
	and BIND_EXPR.
	(first_exec_stmt): Use a gimple_stmt_iterator to traverse the
	statements.
	(first_stmt): New function.
	(last_stmt): New function.

	* tree-dfa.c: Don't include c-common.h, c-tree.h and
	tree-optimize.h.  Include diagnostic.h.
	(tree_find_refs): Disable.
	(find_refs_in_stmt): Disable.
	(find_refs_in_expr): Don't call prep_stmt.
	(tree_ann): Don't annotate empty_stmt_node.
	(find_declaration): Remove.  Update all users.
	(dump_ref): Call get_lineno.
	(is_visible_to): Always return true.

	* tree-flow.h: Include tree-flow-inline.h, basic-block.h and
	tree-simple.h.
	(tree_ann_d): Remove compound_parent field.
	(set_bb_for_stmt): Declare extern.
	(compound_parent, set_compound_parent, struct for_header_blocks,
	union header_blocks, prev_chain_p, set_prev_chain_p, binding_scope,
	set_binding_scope, loop_hdr, for_init_bb, set_for_init_bb,
	for_cond_bb, set_for_cond_bb, for_expr_bb, set_for_expr_bb,
	end_while_bb, set_end_while_bb, do_cond_bb, set_cond_bb,
	stmt_ends_bb_p, loop_parent, latch_block, switch_parent,
	first_exec_stmt, last_exec_stmt, is_exec_stmt,
	is_statement_expression, first_non_decl_stmt, first_decl_stmt,
	first_non_label_in_bb, tree_split_bb, find_declaration): Remove.
	Update all users.
	(get_lineno): New function.
	(struct bb_ann_def): Rename field parent to parent_block.  Update
	all users.
	Remove fields prev_chain_p, loop_hdr and binding_scope.  Update all
	users.
	(parent_block): Rename from bb_parent.
	(set_parent_block): Rename from set_bb_parent.
	(prev_chain_p): Remove
	(bb_empty_p): Return true if block only contains empty_stmt_node.
	(gsi_step_bb): New function.
	(gsi_start_bb): New function.
	(gsi_insert_before, gsi_insert_after, gsi_delete, gsi_replace):
	Declare.
	(insert_stmt_before): Rename from insert_stmt_tree_before.
	(insert_stmt_after): Rename from insert_stmt_tree_after.
	(first_stmt): Declare.
	(last_stmt): Declare.
	(tree_perform_ssapre, tree_ssa_ccp,
	tree_ssa_eliminate_dead_code): Move declaration from tree-optimize.h.
	* tree-flow-inline.h: New file for all the inline functions
	declared in tree-flow.h

	* tree-optimize.c: Don't include tree-optimize.h, c-common.h and
	c-tree.h.
	(optimize_function_tree): Disable call to double_chain_stmts.
	Call init_flow.
	Call tree_find_basic_blocks.
	Disable calls to tree_build_ssa and optimizers.
	(build_tree_ssa): Remove.  Update all users.
	* tree-optimize.h: Remove.
	* tree-ssa-ccp.c: Don't include tree-optimize.h
	* tree-ssa-dce.c: Don't include tree-optimize.h.
	Include diagnostic.h
	* tree-ssa-pre.c: Don't include tree-optimize.h.
	(requires_edge_placement): Disable unused function.
	(set_need_repair): Disable unused function.
	(finalize_1): Disable calls to insert_stmt_tree_before and
	insert_stmt_tree_after.
	(repair_injury): Ditto.
	(code_motion): Ditto.
	* tree-ssa.c: Don't include tree-optimize.h.
	(insert_phi_nodes_for): Remove unused variable.
	(add_phi_node): Don't call statement_code_p.
	* cp/optimize.c: Don't include tree-optimize.h
	* tree-alias-common.c: Don't include tree-optimize.h.
	(find_func_decls): Disable.
	(display_points_to_set): Disable.
	* tree-alias-steen.c: Don't include tree-optimize.h.

2002-10-04  Jason Merrill  <jason@redhat.com>

	* gimplify.c (declare_tmp_vars): Don't add temps to block vars.
	* tree-inline.c (remap_decls): Split out from remap_block.
	(copy_bind_expr): Remap BIND_EXPR_VARS separately from block vars.

	* c-simplify.c (simplify_expr_stmt): Call set_file_and_line_for_stmt.

	* gimplify.c: New file.
	(push_gimplify_context, pop_gimplify_context): New fns.
	(gimple_push_bind_expr, gimple_pop_bind_expr): New fns.
	(simplify_bind_expr): Use them.
	(gimple_current_bind_expr, gimple_add_tmp_var): New fn.
	(foreach_stmt): Recurse if necessary.
	(various): Use generic interfaces instead of c-specific ones.
	* c-simplify.c: Move language-independent code to gimplify.c.
	(simplify_c_loop): Use add_tree instead of add_stmt_to_compound.
	(various): Use new *_bind_expr interfaces.
	* Makefile.in (C_AND_OBJC_OBJS): Add gimplify.o.
	(gimplify.o): New rule.

	* c-decl.c (c_expand_body): Dump trees here.
	* c-simplify.c (simplify_function_body): Not here.

2002-10-03  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_offset_expr_of_array_ref): Don't emit
	intermediate variables for constant index values.
	(mx_xfn_indirect_ref): For constant valid index values and
	known valid array sizes, omit bounds checks.

2002-10-03  Jason Merrill  <jason@ariel.home>

	* c-simplify.c (simplify_bind_expr): Don't clear TREE_SIDE_EFFECTS
	if we have a block.

	* c-simplify.c (simplify_expr) [TRY_FINALLY_EXPR]: New case.

	* tree-inline.c (copy_body_r) [RETURN_EXPR]: Don't make an extra
	copy of the MODIFY_EXPR.  Mark the return label used.
	(expand_call_inline): Don't push/pop_srcloc.  Only emit the return
	label if it was used.

	* tree-simple.c (right_assocify_expr): Split out from
	rationalize_compound_expr.  Don't move non-matching op0's.
	* tree-simple.h: Declare it.
	* c-simplify.c (simplify_boolean_expr): Call it.
	(simplify_cond_expr): Reorganize.  Optimize if (a&&b).

	* c-simplify.c (wrap_with_wfl): Drop special loop handling.
	(simplify_c_loop): Wrap loop contents in wfls.

	* c-simplify.c (STRIP_WFL): Move...
	* tree.h: ...here.

	* c-common.c (c_walk_subtrees): Don't walk TREE_CHAIN.
	* tree-inline.c (walk_tree): Call langhook walk_subtrees first.
	For expressions, walk TREE_CHAIN if it matters.

2002-10-01  Frank Ch. Eigler  <fche@redhat.com>

	* builtins.c (expand_builtin_alloca): Disable if -fmudflap.
	* tree-mudflap.c (mudflap_enqueue_decl): Tweak logic to include
	more globals.
	(mx_xfn_indirect_ref): Handle bitfield COMPONENT_REFs; instrument
	BIT_FIELD_REF/INDIRECT_REFs.

2002-10-01  Jason Merrill  <jason@redhat.com>

	* c-decl.c (poplevel): Only add undeclared labels to the toplevel
	block.
	* c-parse.in (label_decl): Push the declared label.

	* c-decl.c (c_expand_body): If we've been simplified, use
	expand_expr_stmt_value instead.

	* c-decl.c (c_expand_decl): Rename from c_expand_decl_stmt.
	Handle all C-specific expansion semantics.
	* c-tree.h: Change prototype.
	* langhooks.h (struct lang_hooks): Add expand_decl hook.
	* langhooks.c (lhd_expand_decl): Default version.
	* langhooks-def.h (LANG_HOOKS_EXPAND_DECL): Provide default.
	* c-lang.c (LANG_HOOKS_EXPAND_DECL): Define.
	* c-semantics.c (lang_expand_decl_stmt): Remove.
	(genrtl_decl_stmt): Use lang_hooks.expand_decl.
	* Makefile.in (c-semantics.o): Depend on langhooks.h.
	* c-objc-common.c (c_objc_common_init): Don't set
	lang_expand_decl_stmt.

	* c-common.def (ASM_STMT): Only 4 operands.
	* c-common.h (ASM_CV_QUAL): Remove.
	(genrtl_asm_stmt): Adjust prototype.
	* c-typeck.c (build_asm_stmt): Adjust.
	* c-semantics.c (genrtl_asm_stmt): Change cv_qualifier parm to
	volatile_p.
	(expand_stmt): Adjust.

	* c-common.h (SWITCH_COND, SWITCH_BODY, CASE_LOW, CASE_HIGH,
	CASE_LABEL_DECL, GOTO_DESTINATION, ASM_STRING, ASM_OUTPUTS,
	ASM_INPUTS, ASM_CLOBBERS, ASM_VOLATILE_P, ASM_INPUT_P): Move to tree.h.

	* c-pretty-print.c (newline_and_indent): New fn.
	(dump_c_tree, dump_c_node): Make spc a plain int.
	(dump_c_node): Use output_add_identifier.
	Reorganize for bnw-simple; indent in the enclosing node rather
	than the subexpression.
	[FUNCTION_DECL]: Just print the name for now.
	[COMPOUND_EXPR, COND_EXPR]: Handle use as statements.
	[BIND_EXPR, GOTO_EXPR, EXIT_EXPR, LOOP_EXPR, LABELED_BLOCK_EXPR,
	EXIT_BLOCK_EXPR, RETURN_EXPR, SWITCH_EXPR, ASM_EXPR,
	CASE_LABEL_EXPR]: Implement.
	(print_declaration): Print 'static'.
	* c-tree.h: Move c-pretty-print decls to diagnostic.h.

	* expr.c (store_field): Don't always pass want_value==0 to store_expr.

	* expr.c (expand_expr) [EXIT_EXPR]: Handle EXIT_EXPR_IS_LOOP_COND.

	* expr.c (expand_expr) [LOOP_EXPR]: Pass exit_flag==0 to
	exand_start_loop.
	[BIND_EXPR]: Adjust for functions-as-trees mode.
	[COMPOUND_EXPR]: Avoid recursion if possible.
	[SWITCH_EXPR, LABEL_EXPR]: Move handling from java/expr.c.
	[CASE_LABEL_EXPR, ASM_EXPR]: New handling.

	* tree.h (struct tree_common): Add visited flag.
	(TREE_VISITED): New macro.
	* tree.c (copy_node): Clear TREE_VISITED.
	* print-tree.c (print_node): Print visted.

	* stmt.c (expand_asm_expr): New fn.

	* tree.c (build1): Always set TREE_SIDE_EFFECTS for 's' codes.

	* tree.h (enum tree_index): Add TI_EMPTY_STMT.
	(empty_stmt_node): New macro.
	* tree.c (build_common_tree_nodes_2): Initialize it.

	* tree.def: Change some codes from 'e' to 's'.
	(CASE_LABEL_EXPR, ASM_EXPR): New codes.

	* tree.def (SWITCH_EXPR): Now has three operands.

	* tree-inline.c: Retarget to generic trees.  FIXME FIXME.
	* old-tree-inline.c: Old C/Java-specific inliner.
	* Makefile.in (old-tree-inline.o): New rule.
	* c-common.c (c_walk_subtrees): New fn.
	(c_tree_chain_matters_p): New fn.
	* c-lang.c: Use them for LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
	and LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P.
	* c-common.h: Declare them.
	(DECL_NUM_STMTS): Move to tree.h.
	* c-decl.c (finish_function): Simplify the function trees.
	* c-objc-common.c (inline_forbidden_p): Look inside BIND_EXPRs
	for nested functions.  Don't inline a function with _STMT trees.

	* basic-block.h: Include hard-reg-set.h.

	* c-decl.c (start_function): Don't call make_decl_rtl.
	(c_expand_body): Call it here instead.

	* Makefile.in (explow.o): Depend on langhooks.h.

	* unroll.c (copy_loop_body): Don't copy NOTE_INSN_DELETED_LABELs
	between copy_notes_from and loop_end, either.

2002-09-30  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (repair_injury): Start work on updating SSA
	representation for strength reduction injuries.
	Print a new line after outputting tree node in debug statements.
	Fix strength reduction of a candidate with two variables (IE a *
	c).
	Put the repair after the injuring statement, not at the end of the
	block.
	Break the RHS use lookup if it's defined by a phi.
	(calculate_increment): Ditto on node printing.
	(code_motion): Ditto on updating SSA rep for strength reduction
	injuries.
	(find_rhs_use_for_var): Rewrite to use maybe_find_rhs_use_for_var.
	(maybe_find_rhs_use_for_var): Rename from find_rhs_use_for_var,
	don't abort, return NULL.
	(set_var_phis): Simplify break condition.
	Make sure RHS *has* a use before we go and get it.
	(rename2): Ditto on RHS checking.
	When looking up injuring defs, break on phis.
	(phi_opnd_from_res): Ditto.
	(defs_y_dom_x): Ditto.
	(TODO List): Add new TODO to fix the remapping crud.

2002-09-27  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (tree_perform_ssapre): Move insertion into
	splay tree inside the is_simple_modify_expr block, to prevent
	tree check failure.

2002-09-26  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (update_phis_in_list): New function.
	(update_ssa_for_new_use): New function.
	(code_motion): Start working on code to update SSA representation.
	(find_reaching_def_of_var): New function.

2002-09-25  Steven Bosscher  <s.bosscher@student.tudelft.nl>

	* Makefile.in (tree): Add dependency on c-tree.h
	* tree-optimize.c: Include c-tree.h
	(optimize_function_tree): React to -fdump-tree-optimized.

2002-09-25  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (add_list_to_ref_list_end): New function.
	(add_list_to_ref_list_begin): Ditto.
	(find_list_node): Handle searching in empty lists.
	(find_refs_in_stmt): De-staticify.

	* tree-flow.h (add_list_to_ref_list_end): New declaration.
	(add_list_to_ref_list_begin): Ditto.
	(find_refs_in_stmt): Add prototype.

2002-09-25  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-dfa.o): Depend on flags.h
	* tree-cfg.c (tree_dump_cfg): Alter output format slightly.
	(block_invalidates_loop): Look for clobbering definitions of
	GLOBAL_VARIABLE.
	* tree-simple.c (get_base_symbol): Handle EXPR_WITH_FILE_LOCATION
	nodes.
	* tree-optimize.c (init_tree_flow): Remove.  Update all users.
	(build_tree_ssa): Don't call tree_find_refs.
	Don't call tree_compute_rdefs.

	* tree-dfa.c: Include flags.h
	(dump_file): Remove.
	(dump_flags): Remove.
	(pointer_refs): Remove.
	(struct dfa_stats_d): Add fields max_num_phi_args, num_may_alias,
	max_num_may_alias, num_alias_imm_rdefs and max_num_alias_imm_rdefs.
	Remove field num_fcalls.
	(dfa_counts): Declare.
	(tree_find_refs): Declare.
	(tree_ssa_dump_file): Declare.
	(tree_ssa_dump_flags): Declare.
	(dump_if_different): New function.
	(add_default_defs): Remove.  Update all users.
	(add_call_site_clobbers): Remove.  Update all users.
	(add_ptr_may_refs): Remove.  Update all users.
	(compute_may_aliases): New function.
	(find_may_aliases_for): New function.
	(add_may_alias): New function.
	(may_alias_p): New function.
	(is_visible_to): New function.
	(get_alias_index): New function.
	(call_sites): Remove.  Update all users.
	(global_var): Declare.
	(E_FCALL): Remove.  Adjust other constants.
	(M_INDIRECT): Remove.  Update all users.
	(M_RELOCATE): Declare.
	(tree_find_refs): Move debugging dumps to tree_build_ssa.
	Move initialization code to init_tree_ssa.
	Call compute_may_aliases.
	(find_refs_in_expr): For INDIRECT_REF nodes create a reference to
	the canonical INDIRECT_REF node associated with the pointer symbol.
	Given a pointer p, clobber the canonical INDIRECT_REF of p after
	creating a V_DEF for p.
	For CALL_EXPR nodes, if the called function is not pure nor
	const, create a use and a clobbering definition to GLOBAL_VAR.
	(create_ref): Allow INDIRECT_REF variables.
	(add_phi_arg): Keep track of number of PHI arguments created.
	(function_may_recurse_p): Look for clobbering definitions to
	GLOBAL_VAR.
	(get_fcalls): Remove unused function.
	(is_pure_fcall): Remove unused function.
	(fcall_takes_ref_args): Remove unused function.
	(find_declaration): Stop iterating at ENTRY_BLOCK_PTR.
	(debug_variable): New function.
	(dump_variable): New function.
	(dump_referenced_vars): Call it.
	(dump_phi_args): Don't dump NULL arguments.
	(PERCENT): Define.
	(dump_dfa_stats): Re-format output.
	Add new counters.
	Call dump_if_different.
	(collect_dfa_stats): Also recurse into GLOBAL_VAR.
	(collect_dfa_stats_r): Collect may-alias information.
	(count_tree_refs): Collect information about def-def links for
	aliases.
	Keep track of maximum values for number of PHI arguments, aliases
	and def-def links.
	(ref_type_name): Handle M_RELOCATE.
	(validate_ref_type): Ditto.

	* tree-ssa.c: Add more documentation.
	(tree_ssa_dump_file): Rename from dump_file.  Declare extern.
	(tree_ssa_dump_flags): Rename from dump_flags.  Declare extern.
	(added): New local varray.
	(in_work): New local varray.
	(work_stack): New local varray.
	(dfa_counts): Declare.
	(insert_phi_nodes_for): New local function.
	(add_phi_node): New local function.
	(set_ssa_links): New local function.
	(set_alias_imm_reaching_def): New local function.
	(create_default_def): New local function.
	(init_tree_ssa): New local function.
	(tree_find_refs): Relocate declaration from tree-flow.h
	(tree_build_ssa): Call init_tree_ssa.
	Call tree_find_refs.
	Process all SSA-related dump options.
	(insert_phi_nodes): Rename from insert_phi_terms.  Update all
	users.
	Call insert_phi_nodes_for.
	(build_fud_chains): Add more documentation.
	Initialize save_chain to 0.
	(search_fud_chains): Add more documentation.
	Call set_ssa_links.
	Call create_default_def.
	(tree_compute_rdefs): Initialize array marked to 0.
	(follow_chain): Follow def-def chains for non-killing definitions
	for aliases.
	(dump_reaching_defs): Call dump_variable.

	* tree-flow.h (E_FCALL): Remove.  Update all users.
	(M_INDIRECT): Remove.  Update all users.
	(M_RELOCATE): Declare.
	(struct var_ref): Add field alias_imm_rdefs.
	(alias_imm_reaching_def): New inline function.
	(struct tree_ann_d): Add field indirect_var.
	Add field may_aliases.
	(enum tree_flags): Relocate.
	(indirect_var): New inline function.
	(set_indirect_var): New inline function.
	(may_alias): New inline function.
	(num_may_alias): New inline function.
	(struct dfa_counts_d): Declare.
	(global_var): Declare.
	(FCALL_NON_PURE, FCALL_PURE, FCALL_BUILT_IN): Remove.
	(tree_find_refs): Move to tree-ssa.c.
	(dump_variable): Declare.
	(debug_variable): Declare.
	(get_fcalls): Remove.
	(is_pure_fcall): Remove.
	(fcall_takes_ref_args): Remove.
	(ref_defines): Declare.
	(is_killing_def): Declare.
	(get_alias_index): Declare.
	(delete_tree_ssa): Rename from delete_ssa.  Update all users.
	(set_currdef_for): Allow INDIRECT_REF nodes.
	(bb_annotation): Don't create a new one if the block didn't have an
	annotation already.

	* tree-ssa-ccp.c (substitute_and_fold): Rename from
	ssa_ccp_substitute_constants.  Update all users.
	Call replace_uses_in.
	(replace_uses_in): New local function.
	(evaluate_expr): Call it.
	(initialize): Call get_base_symbol.

	* tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Don't handle
	E_FCALL.

2002-09-22  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-dfa.o): Depend on hashtab.h.
	* c-simplify.c (get_name): Declare extern.
	* tree-cfg.c (tree_dump_cfg): Call it.
	(tree_cfg2dot): Call it.
	* tree-ssa-ccp.c (tree_ssa_ccp): Call get_name.
	* tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Call get_name.
	* tree-ssa-pre.c (tree_perform_ssapre): Call get_name.
	* tree-ssa.c (analyze_rdefs): Call get_name.
	(dump_reaching_defs): Call get_name.
	(dump_tree_ssa): Call get_name.
	* tree.h (get_name): Declare.

	* tree-dfa.c: Include "hashtab.h"
	(struct dfa_stats_d): New.
	(collect_dfa_stats): New local function.
	(collect_dfa_stats_r): New local function.
	(count_tree_refs): New local function.
	(count_ref_list_nodes): New local function.
	(tree_find_refs): Call dump_begin on entry to the function.
	(dump_referenced_vars): Call get_name.
	(SCALE): Declare.
	(LABEL): Declare.
	(dump_dfa_stats): New function.
	(debug_dfa_stats): New function.
	* tree-dump.c (struct dump_option_value_info): Add entry for TDF_STATS.
	* tree-flow.h (has_annotation): Remove.  Update all users.
	(dump_dfa_stats): Declare.
	(debug_dfa_stats): Declare.
	(tree_annotation): Don't create one if the tree doesn't have one
	already.  Update all users to new semantics.
	* tree-ssa-dce.c (print_stats): Dump if dump_flags has TDF_STATS bit
	set.
	* tree-ssa.c (tree_build_ssa): Open dump file on entry.
	Call dump_dfa_stats if dump_flags has TDF_STATS bit set.
	Call dump_tree_ssa if dump_flags has TDF_DETAILS bit set.
	* tree.h (TDF_STATS): Define.
	* doc/invoke.texi: Document 'stats' flag for -fdump-tree.

	* tree-dfa.c (next_tree_ref_id): Change type to unsigned long.
	Update all users.
	tree-flow.h (tree_ref_common): Change type of field 'id' to
	unsigned long.  Update all users.
	(ref_id): Change return type to unsigned long.  Update all users.

2002-09-21  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (struct expr_info): Add repaired member.
	(repair_injury): Track which injuries we repaired, so we don't
	repair them > 1 time.

2002-09-20  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c (dump_c_node): Fix call to REAL_VALUE_TO_DECIMAL.

2002-09-20  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_refs_in_stmt): Fix botched call to
	clobber_vars_r with CLEANUP_STMT nodes.

2002-09-20  Diego Novillo  <dnovillo@redhat.com>

	* toplev.c (flag_tree_ssa): Remove.  Update all users.

2002-09-20  Frank Ch. Eigler  <fche@redhat.com>

	* gcc.c (cc1_options): Make -fmudflap imply -fno-merge-constants.
	* varasm.c (categorize_decl_for_section): Likewise, for strings.
	* tree-mudflap.c (mudflap_enqueue_decl): Don't be interested
	in !TREE_USED decls.  Fix minor type warning.
	(mf_offset_expr_of_array_ref): Create explicit temporary variables
	for array index expressions instead of SAVE_EXPRs.  Update callers.
	(mf_build_check_statement_for): Insert temp variables.
	(mx_xfn_indirect_ref): Correct recursion-protection checking
	sequence.  Tweak array check-base calculation back to "&array[0]".
	(*): Use build_function_type_list instead of build_function_type.
	(mx_external_ref): Remove unused parameter.  Update callers.

2002-09-19  Diego Novillo  <dnovillo@redhat.com>

	* c-decl.c (c_expand_body): Invoke tree optimizers with -O1 and
	above.
	* flags.h (flag_tree_ssa): Remove.
	* tree-cfg.c (find_expr_in_tree_helper): Change last argument type
	to int.
	* tree-dfa.c (create_ref): Ditto.
	* tree-flow.h (num_referenced_vars): Change type to unsigned long.
	* doc/invoke.texi (-ftree-ssa): Remove.
	(-fdump-tree-{pre,ccp,dce}): Add to the summary section.
	(-fdump-tree-xxx-details): Update documentation.
	(-fdump-tree-ccp): Document.
	(-fdump-tree-simple): Move elsewhere.

2002-09-19  Richard Henderson  <rth@redhat.com>

	* function.c (insns_for_mem_hash): Cast to size_t first.
	* tree-dfa.c (num_referenced_vars): Unsigned long, not size_t.
	(dump_referenced_vars): Use %lu for it.
	(dump_ref): Use HOST_WIDE_INT_PRINT_DEC.
	* tree-nomudflap.c (mudflap_c_function): Use ATTRIBUTE_UNUSED.
	(mudflap_enqueue_decl, mudflap_enqueue_constant): Likewise.
	* tree-ssa-pre.c (compute_idfs): Cast to size_t first.

	* tree-optimize.c (optimize_function_tree): Fix missed renamings.
	* tree-ssa-pre.c (tree_perform_ssapre): Likewise.

2002-09-19  Jeff Law <law@redhat.com>

	* tree-dfa.c (find_refs_in_stmt): Search for references in the call
	address of a CALL_EXPR.

2002-09-19  Daniel Berlin <dberlin@dberlin.org>

	* toplev.c: tree-ssa-* -> tree-*.

	* doc/invoke.texi: Ditto.

2002-09-19  Daniel Berlin <dberlin@dberlin.org>

	* flags.h: flag_tree_ssa_* -> flag_tree_*.

	* toplev.c: Ditto.

	* tree-optimize.c: Ditto.

	* tree-dump.c: dump-tree-ssa-* -> dump-tree-*.
	TDI_ssa_* -> TDI_*.

	* tree.h: Ditto

	* tree-ssa-dce.c (tree_ssa_eliminate_dead_code): Fix dump handling.

2002-09-18  Daniel Berlin <dberlin@dberlin.org>

	* tree-dump.c (dump_files): Use dump-tree-ssa-??? for the option names
	and "ssa-???" for the dump files.

	* tree.h: TDI_ccp and TDI_dce -> TDI_ssa_ccp and TDI_ssa_dce.

	* tree-ssa-ccp.c: TDI_ccp->TDI_ssa_ccp.

2002-09-18  Daniel Berlin <dberlin@dberlin.org>

	* tree-dump.c: Fix order of dump files

2002-09-17  Daniel Berlin <dberlin@dberlin.org>

	* tree-ssa-pre.c: Remove a lot of finding refs in statements junk.
	Start on strength reduction.
	Only generate simple statements.
	Remove EXPR* macros in favor of inline functions.
	Update comparisons and sets to 1 and 0 to true and false where
	approriate.
	(toplevel): Add DEBUGGING_STRRED define (temporary, for
	implementation debugging, *not* useful as a dump option).
	Add TODO notes.
	Add global avdefs, orig_expr_map, need_repair_map,
	strred_candidate.
	(set_var_phis): Add struct expr_info * argument.
	Update to handle injuring definitions.
	(defs_y_dom_x): Ditto.
	(phi_opnd_from_res): Ditto.
	(phi_for_operand): Remove extra \.
	(find_tree_ref_for_var): Renamed to find_use_for_var. Update all
	callers.
	Use orig_expr_map to lookup original expression, remove statement
	searching gunk.
	(find_rhs_use_for_var): New function.
	(is_strred_cand): New function.
	(is_injuring_def): New function.
	(calculate_increment): New function.
	(repair_injury): New function.
	(set_need_repair): New function.
	(struct expr_info): Add strred_cand member.
	(rename_2): Update to handle injuring definitions.
	(expr_phi_insertion): Ditto.
	(code_motion): Update to repair injuries.
	Only insert SIMPLE statements.
	Free avdefs here now.
	(finalize_1): Don't free avdefs anymore here.
	(tree_perform_ssapre): Record original expresion for
	find_use_for_var's benefit.
	Determine strength reduction candidates.

	* tree-flow.h: Remove EXPR* macros in favor of inline functions.
	Remove E_INJ.

	* tree-dfa.c: Change EXPR* macros to the new functions.
	Remove E_INJ.

2002-09-18  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (M_ADDRESSOF): Define.
	(find_refs_in_expr): Create addressof-use references for ADDR_EXPR
	nodes.
	Don't create references for FUNCTION_DECL nodes.
	(ref_type_name): Handle M_ADDRESSOF.
	(validate_ref_type): Ditto.
	(clobber_vars_r): Don't clobber FUNCTION_DECL nodes.
	* tree-flow.h (M_ADDRESSOF): Declare.

2002-09-17  Diego Novillo  <dnovillo@redhat.com>

	* doc/invoke.texi: Document -ftree-ssa-dce and -fdump-tree-dce.
	* cp/Make-lang.in (CXX_C_OBJS): Add tree-ssa-dce.o.

2002-09-17  Ben Elliston  <bje@redhat.com>

	* Makefile.in (C_AND_OBJC_OBJS): Add tree-ssa-dce.o.
	tree-ssa-dce.o): New target.
	* tree-ssa-dce.c: New file.
	* flags.h (flag_tree_ssa_dce): Declare flag.
	* tree.h (tree_dump_index): Add TDI_dce.
	* toplev.c (flag_tree_ssa_dce): New flag.
	(f_options): Add "dump-tree-all-ssa" option.
	* tree-flow.h (enum tree_flags): Add TF_NECESSARY.
	* tree-dump.c (dump_files): Add dump-tree-dce option.
	(dump_enable_all_ssa): Enable it when dumping all.
	* tree-optimize.h (tree_ssa_eliminate_dead_code): Declare.
	* tree-optimize.c (optimize_function_tree): Invoke the
	optimisation pass if flag_tree_ssa_dce is set.

2002-09-17  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa.o): Add dependency on c-tree.h
	* c-simplify.c (mark_not_simple_r): Don't mark IDENTIFIER_NODEs.
	* tree-dfa.c (function_may_recurse_p): Fix comment.
	(dump_ref): Don't dump immediate uses for PHI nodes more than once.
	(dump_referenced_vars): Unparse the name of the variable.
	* tree-flow.h (dump_tree_ssa): Declare.
	(debug_tree_ssa): Declare.
	(replace_ref_operand_with): Check if OPERAND_P is NULL.
	(restore_ref_operand): Ditto.
	(tree_annotation): Check that constants, types and IDENTIFIER_NODEs
	are not being annotated.
	* tree-ssa.c: Include c-tree.h.
	(dump_reaching_defs): Unparse the variable name.
	(dump_tree_ssa): New function.
	(tree_build_ssa): Call it.
	(debug_tree_ssa): New function.

2002-09-14  Steven Bosscher <s.bosscher@student.tudelft.nl>

	* dwarf2out.c (is_fortran): Return true for
	DW_LANG_Fortran95.
	(gen_compile_unit_die): Return DW_LANG_Fortran95 if
	language is "GNU F95".

2002-09-13  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dump.c (dump_switch_p): Get longest match, not first one.

	* tree.h: Put TDI_* back in order, now that we do longest match
	matching.

2002-09-13  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (add_call_site_clobbers): Call decl_function_context
	instead of DECL_CONTEXT.
	* tree-ssa-ccp.c (initialize): Ditto.
	* tree-ssa.c (analyze_rdefs): Ditto.

2002-09-11  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_refs_in_stmt): Call clobber_vars_r to clobber
	CLEANUP_STMT nodes.
	(create_ref): Only add _DECL nodes to the list of referenced
	variables.
	(clobber_vars_r): Create a may-use reference prior to clobbering
	the variable.
	(add_call_site_clobbers): Ditto.
	(add_ptr_may_refs): Move call to find_list_node where it's actually
	needed.
	* tree-flow.h: Update documentation on M_CLOBBER.

2002-09-10  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (defs_match_p): Fix typo ( | -> || ).

2002-09-10  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (V_PHI_ARG): Remove.  Adjust related constants.
	Update all users.
	(add_ref_to_list_after): Don't allocate memory for the
	node when adding to the beginning or the end of the list.
	(add_phi_arg): Don't call create_ref to add a new argument.
	(debug_phi_args): New function.
	(dump_phi_args): New function.
	(dump_ref): Call it.
	(dump_referenced_vars): Use 'file' instead of 'dump_file'.

	* tree-flow.h (V_PHI_ARG): Remove.  Update all users.
	(struct var_ref): Move fields used in distinct
	reference types to other structures.  Update all users.
	(struct var_def): New.
	(struct var_phi): New.
	(struct var_use): New.
	(union tree_ref_d): Add members vdef, vphi, vuse and vphi_arg.
	Update all users.
	(save_chain): Remove.  Update all users.
	(set_save_chain): Remove.  Update all users.
	(marked_with): Remove.  Update all users.
	(mark_def_with): Remove.  Update all users.
	(dump_reaching_defs): Declare.
	(debug_reaching_defs): Declare.

	(struct phi_node_arg_d): New structure.
	(phi_node_arg): New type.
	(phi_arg): Change return type to phi_node_arg.
	(imm_reaching_def_edge): Rename to phi_arg_edge.
	(set_imm_reaching_def_edge): Rename to set_phi_arg_edge.
	(phi_arg_def): New inline function.
	(set_phi_arg_def): New inline function.
	(debug_phi_args): Declare.
	(dump_phi_args): Declare.

	* tree-ssa-ccp.c: Use new phi_node_arg type when examining PHI node
	arguments.

	* tree-ssa-pre.c: Ditto.

	* tree-ssa.c (save_chain): New local variable.
	(build_fud_chains, search_fud_chains): Use it.
	(marked): New local variable.
	(tree_compute_rdefs, follow_chain): Use it.
	(dump_reaching_defs): New function.
	(debug_reaching_defs): New function.

2002-09-09  Daniel Berlin <dberlin@dberlin.org>

	* Makefile.in (tree-alias-steen.o): Remove gt-tree-alias-steen.h
	(tree-alias-common.o): Add dependency on c-common.h

	* tree-ssa-pre.c: Fix PRE now that V_USE's expr's are the entire
	assignment, rather than just the right hand side.
	Stop generating our own call clobbers

	* tree-dfa.c (create_ref): Make sure var is not null before checking
	TREE_THIS_VOLATILE.

	* tree.h: Reorder TDI_* so ssapre comes before ssa.

	* tree-dump.c: dump-tree-ssapre has to come before dump-tree-ssa
	in the table, or else it'll never match.

2002-09-09  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_offset_expr_of_array_ref): Fold constants along
	the way.
	(mf_build_check_statement_for): Ditto.  Flag new COMPONENT_REFs.
	(mx_xfn_indirect_ref): Instrument COMPONENT_REFs specially.  Tweak
	ARRAY_REF instrumentation to reduce need of copying and recursion.

2002-09-09  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa.c (analyze_rdefs): Disable uninitialized variable warnings.

2002-09-09  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa.o): Add dependency on tree-simple.h.
	(tree-dfa.o): Add dependency on tree-simple.h and tree-inline.h.
	(tree-alias-steen.o): Add dependency on c-common.h.
	(tree-optimize.o): Add dependency on c-common.h.

	* c-simplify.c (deep_copy_node): Call walk_tree with mostly_copy_tree_r.
	(mostly_copy_tree_r): Also copy flags from original tree.
	(mark_not_simple_r): Call set_tree_flag.

	* tree-alias-steen.c: Include c-common.h.

	* tree-cfg.c (map_stmt_to_bb): Remove.
	(block_invalidates_loop): Change return type to bool.
	(create_loop_hdr): New function.
	(create_bb): Call it.
	(create_bb_ann): Return newly created annotation object.
	(remove_bb_ann): Nullify loop_hdr annotation, if there is one.
	(tree_delete_bb): Only remove basic block annotation from
	executables statements.
	(is_computed_goto): New function.

	* tree-dfa.c (pointer_refs): New file local variable.
	(call_sites): New global variable.
	(V_DEF, V_USE, V_PHI, V_PHI_ARG, E_FCALL, E_PHI, E_USE, E_KILL,
	E_INJ): New global constants.
	(M_DEFAULT, M_CLOBBER, M_MAY, M_PARTIAL, M_INITIAL, M_INDIRECT,
	M_VOLATILE): New global constants.
	(num_referenced_vars): New global variable.
	(referenced_vars): Rename from referenced_symbols.  Update all
	users.
	(clobber_vars_r): New function.
	(add_default_defs): New function.
	(add_call_site_clobbers): New function.
	(add_ptr_may_refs): New function.
	(add_phi_arg): New function.
	(find_list_node): New function.
	(remove_ref_from_list): Call it.
	(add_ref_to_list_after): New function.
	(is_pure_fcall): New function.
	(fcall_takes_ref_args): New function.
	(dump_referenced_vars): New function.
	(debug_referenced_vars): New function.
	(ref_type_name): New function.
	(validate_ref_type): New function.
	(debug_phi_args): Remove.
	(dump_phi_args): Remove.
	(add_referenced_var): Rename from add_ref_symbol.  Update all
	users.
	(dump_ref): Rename from dump_varref.  Update all users.
	(debug_ref): Rename from debug_varref.  Update all users.
	(dump_ref_list): Rename from dump_varref_list.  Update all users.
	(dump_ref_array): Rename from dump_varref_array.  Update all users.
	(next_tree_ref_id): Rename from next_varref_id.  Update all users.

	(tree_find_refs): Rename from tree_find_varrefs.  Update all users.
	Call add_default_defs.
	Call add_call_site_clobbers.
	Call add_ptr_may_refs.
	Call dump_referenced_vars.
	Create and destroy pointer_refs list.

	(find_refs_in_stmt): Set reference type to clobbering definition
	for the ASM_OUTPUTS and ASM_CLOBBERS expressions of an ASM_STMT.
	Set reference type to initial definition for the DECL_INITIAL node
	of a DECL_STMT.
	Clobber everything in CLEANUP_STMT nodes.

	(find_refs_in_expr): Re-write.
	Recursively clobber every VAR_DECL contained in non SIMPLE nodes.
	Mark indirect pointer references with M_INDIRECT flag.
	Add pointer references to pointer_refs list.
	Glob references to arrays and structures.
	Add function call expressions to call_sites list.

	(empty_ref_list): Do nothing if the list is empty already.
	(delete_ref_list): Ditto.
	(create_ref): Add new argument ADD_TO_BB.
	Set M_VOLATILE modifier if this is a reference to a volatile
	variable.
	Count number of incoming edges for V_PHI references before
	initializing the V_PHI_ARG array.
	Only add reference to basic block if ADD_TO_BB is true.
	Set output reference for the parent expression for V_DEF
	references.
	(remove_tree_ann): Do nothing if the tree didn't have an
	annotation.

	* tree-flow.h (enum treeref_type): Remove.  Update all users.
	(union varref_def): Ditto.
	(tree_ref): Rename from varref.  Update all users.
	(V_DEF): Declare.
	(V_USE): Declare.
	(V_PHI): Declare.
	(V_PHI_ARG): Declare.
	(E_FCALL): Declare.
	(E_PHI): Declare.
	(E_USE): Declare.
	(E_KILL): Declare.
	(E_INJ): Declare.
	(M_DEFAULT): Declare.
	(M_CLOBBER): Declare.
	(M_MAY): Declare.
	(M_PARTIAL): Declare.
	(M_INITIAL): Declare.
	(M_INDIRECT): Declare.
	(M_VOLATILE): Declare.
	(struct tree_ref_common): Rename from treeref_common.  Update all
	users.
	Change type of field 'type' to HOST_WIDE_INT.
	Rename field 'sym' to 'var'.
	(struct var_ref): Rename from varref.  Update all users.
	Join the structures varuse
	and vardef into a single structure.
	(struct expr_ref_common): Rename from exprref_common.  Update all
	users.
	(struct expr_use): Rename from expruse.  Update all users.
	(struct expr_phi): Rename from exprphi.  Update all users.
	(union tree_ref_d): Rename from varref_def.  Update all users.
	(EXPRPHI_PHI_ARGS): Rename from EXPRPHI_PHI_CHAIN.  Update all
	users.
	(struct tree_ann_d): Rename field 'compound_stmt' to
	'compound_parent'.
	Add field 'output_ref'.
	(enum tree_flags): New enum.
	(TF_REFERENCED): New flag.
	(phi_arg): Remove.
	(get_num_phi_args): Remove.
	(get_phi_arg): Remove.

	(struct vardef): Remove.  Update all users.
	(VARDEF_IMM_USES): Ditto.
	(VARDEF_SAVE_CHAIN): Ditto.
	(VARDEF_RUSES): Ditto.
	(VARDEF_MARKED): Ditto.
	(VARDEF_PHI_ARGS): Ditto.
	(struct varuse): Ditto.
	(VARUSE_IMM_RDEF): Ditto.
	(VARUSE_RDEFS): Ditto.
	(VARREF_ID): Ditto.
	(VARREF_TYPE): Ditto.
	(VARREF_BB): Ditto.
	(VARREF_EXPR): Ditto.
	(VARREF_OPERAND_P): Ditto.
	(VARREF_STMT): Ditto.
	(VARREF_SYM): Ditto.
	(IS_DEFAULT_DEF): Ditto.
	(IS_ARTIFICIAL_REF): Ditto.
	(TREE_ANN): Ditto.
	(BB_FOR_STMT): Ditto.
	(TREE_CURRDEF): Ditto.
	(TREE_REFS): Ditto.
	(TREE_COMPOUND_STMT): Ditto.
	(TREE_FLAGS): Ditto.
	(BB_ANN): Ditto.
	(BB_PARENT): Ditto.
	(BB_REFS): Ditto.
	(BB_PREV_CHAIN_P): Ditto.
	(BB_BINDING_SCOPE): Ditto.
	(BB_LOOP_HDR): Ditto.
	(FOR_INIT_STMT_BB): Ditto.
	(FOR_COND_BB): Ditto.
	(FOR_EXPR_BB): Ditto.
	(END_WHILE_BB): Ditto.
	(DO_COND_BB): Ditto.
	(BB_EMPTY_P): Ditto.

	(ref_type): New inline function.
	(ref_var): New inline function.
	(ref_stmt): New inline function.
	(ref_expr): New inline function.
	(ref_bb): New inline function.
	(ref_id): New inline function.
	(replace_ref_operand_with): New inline function.
	(restore_ref_operand): New inline function.
	(imm_uses): New inline function.
	(save_chain): New inline function.
	(set_save_chain): New inline function.
	(reached_uses): New inline function.
	(marked_with): New inline function.
	(mark_def_with): New inline function.
	(phi_args): New inline function.
	(num_phi_args): New inline function.
	(phi_arg): New inline function.
	(imm_reaching_def): New inline function.
	(set_imm_reaching_def): New inline function.
	(imm_reaching_def_edge): New inline function.
	(set_imm_reaching_def_edge): New inline function.
	(reaching_defs): New inline function.
	(tree_annotation): New inline function.
	(has_annotation): New inline function.
	(bb_for_stmt): New inline function.
	(set_bb_for_stmt): New inline function.
	(currdef_for): New inline function.
	(set_currdef_for): New inline function.
	(tree_refs): New inline function.
	(add_tree_ref): New inline function.
	(remove_tree_ref): New inline function.
	(compound_parent): New inline function.
	(set_compound_parent): New inline function.
	(set_tree_flag): New inline function.
	(clear_tree_flag): New inline function.
	(tree_flags): New inline function.
	(reset_tree_flags): New inline function.
	(output_ref): New inline function.
	(set_output_ref): New inline function.
	(bb_annotation): New inline function.
	(bb_parent): New inline function.
	(set_bb_parent): New inline function.
	(bb_refs): New inline function.
	(remove_bb_ref): New inline function.
	(prev_chain_p): New inline function.
	(set_prev_chain_p): New inline function.
	(binding_scope): New inline function.
	(set_binding_scope): New inline function.
	(header_blocks): New inline function.
	(for_init_bb): New inline function.
	(set_for_init_bb): New inline function.
	(for_cond_bb): New inline function.
	(set_for_cond_bb): New inline function.
	(for_expr_bb): New inline function.
	(set_for_expr_bb): New inline function.
	(end_while_bb): New inline function.
	(set_end_while_bb): New inline function.
	(do_cond_bb): New inline function.
	(set_do_cond_bb): New inline function.
	(bb_empty_p): New inline function.

	(referenced_vars): Rename from referenced_symbols.  Update all
	users.
	(num_referenced_vars): Declare.
	(NREF_SYMBOLS): Remove.  Update all users.
	(REF_SYMBOL): Ditto.
	(ADD_REF_SYMBOL): Ditto.
	(referenced_var): New inline function.
	(call_sites): Declare.
	(next_tree_ref_id): Rename from next_varref_id.  Update all users.
	(is_computed_goto): Declare.
	(is_pure_fcall): Declare.
	(fcall_takes_ref_args): Declare.
	(add_ref_to_list_after): Declare.
	(find_list_node): Declare.
	(ref_type_name): Declare.
	(validate_ref_type): Declare.

	* tree-optimize.c: Include c-common.h.
	(optimize_function_tree): Store DECL_SAVED_TREE in a local
	variable.

	* tree-ssa-ccp.c (cp_lattice_meet): New function.
	(visit_phi_node): Call it.
	(add_outgoing_control_edges): New function.
	(visit_expression_for): Call it.
	Don't handle static initializers.
	Handle computed gotos.
	(add_control_edge): New function.
	(visit_condexpr_for, simulate_block, add_outgoing_control_edges): Call
	it.
	(simulate_def_use_chains): Only look at unmodified V_USE references.
	(ssa_ccp_substitute_constants): Ditto.
	(evaluate_expr): Ditto.
	(initialize): Set initial value for incoming parameters and globals
	to VARYING.
	Set initial value for initialized static variables to VARYING,
	unless the variable is read-only.
	(set_lattice_value): Don't special case globals, volatiles and
	variables with their address taken.

	* tree-ssa.c: Include tree-simple.h.
	(tree_build_ssa): Don't add default definitions.
	(insert_phi_terms): Add new PHI nodes at the beginning of the list
	of references for the basic block.
	(search_fud_chains): Add def-def chains for non-killing
	definitions.
	(delete_ssa): Remove list call_sites.
	Set num_referenced_vars to 0.
	Set referenced_vars to NULL.
	(follow_chain): Follow def-def chains for non-killing definitions.
	(is_upward_exposed): Change return type to bool.
	(add_phi_arg): Remove.

2002-09-06  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (deferred_static_decl*): Correct GTY markup.
	(mudflap_enqueue_decl): Correct iteration bounds.
	(mf_init_extern_trees): Add more constness to mf_cache_structptr_type.
	(mf_offset_expr_of_array_ref): Remove excess mx_flagging.  save_expr
	array subscripts.
	(mf_build_check_statement_for): Reorganize to take explicit
	check-base/size arguments, in addition to value argument.  save_expr
	array subscripts.  Copy value/base/size subtrees.
	(mx_xfn_indirect_ref): Support marking of subtrees for nontraversal.
	Track source line numbers more aggressively.  For arrays, check bounds
	from base through indexed element, not just the indexed element.
	Use nontraversal flagging to eliminate some excess instrumentation.
	(mf_xform_derefs): Support nontraversal by a hash table.
	(*): Remove "{{{"/"}}}" folding marks.

2002-09-02  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-common.[ch]: New files.
	* tree-alias-steen.[ch]: Split out common stuff into
	tree-alias-common.[ch].
	* c-config-lang.in: Modify to use tree-alias-common.[ch] instead of
	tree-alias-steen, since this is where the GTY'd stuff is now.
	* Makefile.in: Add dependencies for tree-alias-common.[ch].

2002-09-03  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_goto_stmt): New function.
	(simplify_stmt): Call it.
	* tree-simple.c: Document grammar for GOTO_STMT nodes.
	(rationalize_compound_expr): Wrap it with #if 0/#endif.
	(get_base_symbol): Minor comment fixup.

2002-09-03  Frank Ch. Eigler  <fche@redhat.com>

	* gcc.c (MFWRAP_SPEC): Add --wrap=alloca.

2002-09-01  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_stmt): Mark CLEANUP_STMTs and ASM_STMTs
	not SIMPLE.
	(simplify_for_stmt): Do not allow expression sequences in
	FOR_INIT_STMT and FOR_EXPR nodes.
	* tree-simple.c: Document difference with original SIMPLE grammar.

2002-08-31  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mf_build_check_statement_for): Tolerate dereference
	of void pointers.
	(mx_register_decl): Correct typo in below patch.

2002-08-30  Graydon Hoare  <graydon@redhat.com>

	* tree-mudflap.c (mx_register_decl): Mark declarations as
	TREE_ADDRESSABLE when mudflap decides to register them.

2002-08-29  Graydon Hoare  <graydon@redhat.com>

	* tree-mudflap.c (mx_xfn_indirect_ref): Rewrite array references as
	pointer dereferences.
	(struct mf_xform_decls_data): New member: param_decls.
	(mx_register_decl): New function.
	(mx_xfn_xform_decls): Factor code out into mx_register_decl.
	Register live parameters with mudflap.
	(mx_xfn_find_addrof): Notice references to fields of structures
	and function parameters.

2002-08-29  Frank Ch. Eigler  <fche@redhat.com>

	* c-pretty-print.c (dump_c_tree): Detect loops in statement chains
	using a hash table to track visited status.
	* Makefile.in: Add hashtab.h dependency.

2002-08-28  Frank Ch. Eigler  <fche@redhat.com>

	* tree-mudflap.c (mudflap_enqueue_constant): Register non-string
	constants also.
	(mf_build_check_statement_for): Include pushlevel/pushdecl/poplevel
	for local variables.

2002-08-27  Frank Ch. Eigler  <fche@redhat.com>

	Better static registration:
	* varasm.c (make_decl_rtl): Handle DECL_RTL_SET_P case for
	mudflap static registration.
	* tree-mudflap.c (mudflap_enqueue_decl): Rewrite to handle
	deferred statics.
	(mudflap_finish_file): Call above fn back for deferred statics.

	Cleanup:
	* tree-mudflap.c (mf_varname_tree, mf_file_function_line_tree):
	Reorganize output_buffer reuse mechanism.
	(mf_build_check_statement_for): Set TREE_SIDE_EFFECTS.
	(mx_xfn_indirect_ref): Correct file/line collection tests.

	Dynamic linking support:
	* gcc.c (MFWRAP_SPEC): Make conditional on -static.  Add the
	newer wrapped functions dlopen/mmap/munmap.
	(MFLIB_SPEC): Be sensitive to -static.  Partial support for
	dynamic linking.

2002-08-26  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa.o): Add dependency on ggc.h
	(c-simplify.o): Add dependency on langhooks-def.h
	* c-simplify.c: Include langhooks-def.h
	(simplify_function_tree): Do nothing if the front end does not
	support simplification.

	* tree-flow.h (struct vardef): Remove fields 'phi_chain' and
	'phi_chain_bb'.
	Add field 'phi_args'.
	(VARDEF_PHI_CHAIN): Remove.  Update all users.
	(VARDEF_PHI_CHAIN_BB): Remove.  Update all users.
	(VARDEF_PHI_ARGS): Define.
	(struct varuse): Rename field 'chain' to 'imm_rdef'.  Update all
	users.
	(VARUSE_IMM_RDEF):  Rename from VARUSE_CHAIN.  Update all users.
	(phi_arg): New structure.
	(get_num_phi_args): New function.
	(get_phi_arg): New function.
	(set_phi_arg): New function.
	(add_phi_arg): New function.
	(debug_phi_args): Declare.
	(dump_phi_args): Declare.
	* tree-dfa.c (create_ref): Remove initialization of
	VARDEF_PHI_CHAIN and VARDEF_PHI_CHAIN_BB.
	Initialize array VARDEF_PHI_ARGS.
	(dump_varref): Call dump_phi_args.
	(dump_phi_args): New function.
	(debug_phi_args): New function.
	* tree-ssa-ccp.c (PHI_PARMS): Remove.
	(EIE): Remove.
	(visit_phi_node): Get the argument's edge directly from the
	argument instead of calling find_edge.
	(initialize): Cast call to NUM_EDGES to unsigned.
	* tree-ssa-pre.c: Update uses of VARDEF_PHI_CHAIN,
	VARDEF_PHI_CHAIN_BB and VARUSE_CHAIN everywhere.
	* tree-ssa.c: Ditto.
	Include ggc.h.
	(search_fud_chains): Call add_phi_arg to add arguments to each PHI
	node.
	(tree_ssa_remove_phi_alternative): Call set_phi_arg to switch the
	last element with the element being removed.

2002-08-26  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (mostly_copy_tree_r): Unshare STMT_EXPR
	nodes.

2002-08-25  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_refs_in_stmt): Replace calls to
	RETURN_EXPR with RETURN_STMT_EXPR.
	* c-simplify.c (simplify_return_stmt): Ditto.
	(deep_copy_node): Ditto.
	* c-pretty-print.c (dump_c_node): Ditto.

2002-08-24  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c: Add `break' after calls to NIY in
	switch statements.

2002-08-23  Jeffrey A Law  (law@redhat.com)

	* tree-ssa-ccp.c (tree_ssa_ccp): Remove #if 0 that accidentally
	got checked in.  Cleanup the cfg to remove unreachable blocks
	discovered by CCP.

	* basic-block.h (EDGE_EXECUTABLE): New edge flag.

	* cfganal.c (find_edge): New function.

	* ssa-ccp.c: Convert to use EDGE_EXECUTABLE bit in the
	edge flags rather than a bitmap.  Convert edge worklist
	into a varray.  Avoids expensive find_index_edge calls.
	* tree-ssa-ccp.c: Likewise.

	* tree-flow.h (tree_ssa_remove_phi_alternative): Declare.
	* tree-ssa.c (tree_ssa_remove_phi_alternative): New function.
	* tree-ssa-ccp.c (optimize_unexecutable_edges): Remove
	PHI alternatives for unexecutable edges.  Also remove
	unexecutable edges from the CFG.

2002-08-22  Jeffrey A Law  (law@redhat.com)

	* Makefile.in (tree-optimize.o): Depend on tree-dchain.o
	* tree-optimize.c: Include tree-dchain.h.
	(optimize_function_tree): Unconditionally build and tear down
	the backpointers for the statement chain.

2002-08-22  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_refs_in_stmt): Look for VARUSE references in
	initialization expressions.
	(find_refs_in_expr): Reformat.
	(remove_ref_from_list): Optimize for the common case of removing
	the head or the tail of the list.
	(add_ref_to_list_end): Reformat comment.
	(create_ref): Store the reference to LHS of assignment expressions.
	(dump_varref): Also dump immediate uses of PHI nodes.
	* tree-flow.h (IS_GHOST_DEF): Rename to IS_DEFAULT_DEF.  Update all
	callers everywhere.
	(struct tree_ann_def): Update comments for field 'currdef'.
	* tree-ssa-ccp.c (ssa_edges): Change type to ref_list.
	(SSA_NAME): Remove.
	(initialize): New function
	(finalize): New function.
	(visit_expression): Rename to visit_expression_for.  Update all
	callers.
	(visit_condexpr_for): New function.
	(visit_assignment): Rename to visit_assignment_for.  Update all
	callers.
	(examine_flow_edges): Rename to simulate_block.  Update all
	callers.
	(follow_def_use_chains): Rename to simulate_def_use_chains.  Update
	all callers.
	(evaluate_expr_for): Rename to evaluate_expr.  Change argument to
	'tree'.
	(set_lattice_value): New function.
	(tree_ssa_ccp): Change main loop to visit flow_edges and ssa_edges
	alternately.
	(visit_phi_node): Do not set the lattice value to UNDEFINED when we
	find a non-executable edge.
	(visit_expression_for): Default definitions for PARM_DECLs are
	assigned a VARYING value.
	Default definitions for any other local variables are assigned an
	UNDEFINED value.
	Clobber VARDEFs that are not the LHS of an assignment.
	Clobber VARDEFs that initialize non-const static variables.
	* tree-ssa.c (search_fud_chains): Set up def-use edges for PHI
	nodes and regular definitions.

	* tree.c (simple_cst_equal): Call simple_cst_list_equal to compare
	CONSTRUCTOR_ELTS pointers.

2002-08-22  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c (buffer): New file local variable.
	(initialized): New file local variable.
	(print_c_tree): Don't call init_output_buffer.  Call
	maybe_init_pretty_print.
	(print_c_node): Ditto.
	(print_c_node_brief): Ditto.
	(maybe_init_pretty_print): New function.
	* tree-mudflap.c (mf_varname_tree): Only call init_output_buffer
	once.  Call output_clear_message_text before returning.

2002-08-21  Frank Ch. Eigler  <fche@redhat.com>

	Support source-file/line coordinates in check/violation messages.
	* tree-mudflap.c (mf_init_extern_trees): Add new "location" formal
	arg to __mf_check.
	(mf_file_function_line_tree): New function to build an actual location
	string.
	(build_check_statement_for): Call it / pass it.
	(mx_xfn_indirect_ref): Track source file/line location via
	STMT_LINENO, FILE_STMT, EXPR_WITH_FILE_LOCATION traversal memos.

2002-08-21  Daniel Berlin  <dberlin@dberlin.org>

	* dominance.c: Cache immediate dominators.

2002-08-20  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-steen.h (struct tree_alias_ops): Add flag for
	interprocedural.

	* tree-alias-steen.c (steen_alias_ops): Set interprocedural to 0
	for now.
	(intra_function_call): New function to handle intraprocedural calling.
	(finc_func_aliases): Use it.
	Handle *x = *y, *x = &y, and *x = (cast) y.
	(display_points_to_set_helper): New function, split from ...
	(display_points_to_set): Here.
	(create_alias_vars): Try to print all alias vars we find in the
	alias_vars array, rather than just those that are linked directly to
	trees.
	Clear arrays when we finish if we aren't interprocedural.

2002-08-20  Frank Ch. Eigler  <fche@redhat.com>

	static object registration support:
	* tree-mudflap.c (mudflap_enqueue_decl, mudflap_enqueue_constant):
	Replace stubs with real code.
	(mf_enqueue_register_call): New function to generate asm-object
	call to __mf_register.
	(mf_flush_enqueued_calls): New function to emit global ctor function
	with enqueued __mf_register calls.
	(mf_varname_tree): Tolerate being called from non-function context.
	* c-objc-common.c: #include <tree-mudflap.h>.

	gengtypes support for mudflap:
	* Makefile.in (GTFILES): Include tree-mudflap.c.
	(gt-tree-mudflap.h): New target.
	* tree-mudflap.c: Annotate global tree nodes with GTY(()).
	* tree-nomudflap.c: Add dummy ggc root table.

2002-08-19  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_refs_in_expr): If the current sub-expression is
	not SIMPLE, mark its parent.
	(create_ref): If the parent expression is not SIMPLE, create
	VARDEFs regardless of the original reference type.

	* tree-ssa-ccp.c (widen_bitfield): New function.
	(evaluate_expr_for): Call it.

2002-08-18  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (evaluate_expr_for): Fix thinko in
	2002-08-17 patch.

2002-08-17  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa-ccp.c (evaluate_expr_for): keep VARREF_SYM in a local
	variable.

2002-08-16  Diego Novillo  <dnovillo@redhat.com>

	* basic-block.h (BB_CONTROL_EXPR): Update value.
	(BB_LOOP_CONTROL_EXPR): Define.
	(BB_CONTROL_ENTRY): Update value.
	* tree-cfg.c (make_for_stmt_blocks): Flag header blocks withh
	BB_LOOP_CONTROL_EXPR.
	(make_while_stmt_blocks): Ditto.
	(make_do_stmt_blocks): Ditto.
	(tree_delete_bb): Update annotations in the loop entry block when
	removing one of the loop expression blocks.

	* tree-dfa.c (tree_find_varrefs): Disregard empty blocks.
	(find_refs_in_stmt): Handle all the loop expression blocks in
	FOR_STMT and DO_STMT nodes.
	(find_refs_in_expr): Change first argument to tree *.  Update all
	callers.
	Force all references to be definitions when the expression is not
	in SIMPLE form.
	Also create references for compound variables and array references.
	Not just their individual components.
	Always use the original parent expression when making recursive
	calls.
	(create_ref): Add new argument operand_p.  Update all callers.
	(remove_tree_ann): New function.
	(dump_varref): Don't assume that the referenced symbol is a _DECL
	node.
	* tree-flow.h (treeref_common): Add field operand_p.
	(VARREF_OPERAND_P): Define.
	(BB_EMPTY_P): Define.
	(remove_tree_ann): Declare.
	(create_ref): Add new argument operand_p.
	* tree-simple.c (get_base_symbol): New function.
	* tree-simple.h (get_base_symbol): Declare.
	* tree-ssa-ccp.c (visit_assignment): Call it.
	(ssa_ccp_substitute_constants): Use VARREF_OPERAND_P to replace
	values into the expression.
	(evaluate_expr_for): Ditto.
	Do not try to evaluate the expression if the reference is not of
	the same type as the expression.
	After evaluation, restore the expression to its original form.
	* tree-ssa-pre.c (insert_occ_in_preorder_dt_order_): Update calls
	to create_ref.
	(finalize_): Ditto.
	(expr_phi_insertion): Ditto.
	* tree-ssa.c (tree_build_ssa): Ditto.
	(insert_phi_terms): Ditto.
	(delete_ssa): Call remove_tree_ann.

2002-08-15  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c: Move extern definitions to diagnostic.h.
	(print_c_node_brief): New function.
	(debug_c_node_brief): New function.
	(debug_c_node): Add option for showing brief versions of statement
	nodes.  Update all callers.
	(print_declaration): Ditto.
	* c-simplify.c (simplify_function_tree): Add newline to debug
	output.
	* c-tree.h (print_c_node_brief): Declare.
	(debug_c_node_brief): Declare.
	* tree-cfg.c: Call print_c_node_brief in debugging otuput.
	* tree-mudflap.c (dump_c_node): Remove extern declaration.
	(mf_varname_tree): Update call to dump_c_node.

2002-08-15  Daniel Berlin  <dberlin@dberlin.org>

	* tree-cfg.c (find_expr_in_tree_helper): Renamed from find_expr_in_tree.
	(find_expr_in_tree): Redone.

2002-08-15  Daniel Berlin  <dberlin@dberlin.org>

	* tree-cfg.c (insert_before_ctrl_stmt): Fix insertion for various
	parts of for loop.

	* tree-ssa-pre.c (finalize_1): Set EXPR_STMT type to type of
	expression in it.

2002-08-14  Frank Ch. Eigler  <fche@redhat.com>

	* gcc.c (LINK_COMMAND_SPEC): Tweak placement of %(mflib).

2002-08-14  Diego Novillo  <dnovillo@redhat.com>

	* tree-simple.h (is_simple_decl_stmt): Declare.

2002-08-13  Frank Ch. Eigler  <fche@redhat.com>

	* gcc.c (MFWRAP_SPEC, MFLIB_SPEC): New macros, splitting MFLIB_SPEC.
	(mfwrap_spec, mflib_spec): Define corresponding vars.
	(static_specs): Define correponding spec aliases.
	(LINK_COMMAND_SPEC): Include -fmudflap refs to new spec aliases.
	(cpp_unique_options): Move -fmudflap MFCPP_SPEC clause here.
	(cc1_options): Move -fmudflap MFCC1_SPEC clause here.
	(MFCC1_SPEC, MFCPP_SPEC, MFLIB_SPEC): Remove macros and uses.

2002-08-13  Graydon Hoare  <graydon@redhat.com>

	* tree-mudflap.c (mf_build_check_statement_for): Factor code out of
	mx_xfn_indirect_ref for use in ARRAY_REF case.
	(mf_build_check_statement_for): Check size of underlying object
	rather than size of pointer.
	(mx_xfn_indirect_ref): Check ARRAY_REF expressions.
	(mf_offset_expr_of_array_ref): New function to calculate array ref
	offsets.

2002-08-13  Diego Novillo  <dnovillo@redhat.com>

	* tree-simple.c (is_simple_condexpr): Update comment.
	* tree-ssa-ccp.c (ssa_ccp_substitute_constants): Add debugging code.

2002-08-12  Jason Merrill  <jason@redhat.com>

	* c-typeck.c (build_component_ref): Don't add a NON_LVALUE_EXPR
	in C99 mode.

	* c-simplify.c (simplify_expr): Always simplify.  Loop if *expr_p
	changed.
	(simplify_addr_expr): Just replace *expr_p if we have a '&*'.
	* tree-simple.c (is_simplifiable_builtin): Add more tree codes.

2002-08-11  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c: Fix typo.  Substitute CHECKING with ENABLE_CHECKING.
	* tree-cfg.c: Ditto.
	* tree-dfa.c: Ditto.
	* tree-ssa-ccp.c: Ditto.
	* tree-ssa.c: Ditto.

2002-08-11  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_refs_in_expr): Use the given ref_type for some unary
	expressions.
	(create_ref): Insert ghost definitions at the beginning of the
	basic block.
	(find_expr_in_tree): Ignore IDENTIFIER_NODE.
	* tree-flow.h (treeref_common): Move the id field to the end of the
	structure.
	(IS_GHOST_DEF): Redefine to return non zero for definitions
	without an associated expression in basic block 0.
	* tree-ssa-ccp.c (tree_ssa_ccp): Use last_basic_block to allocate
	executable_blocks.
	(visit_expression): Set the lattice value for ghost definitions to
	VARYING.
	(examine_flow_edges): Update comments.
	* tree-ssa.c (tree_build_ssa): Create ghost definitions in basic
	block 0.
	(insert_phi_terms): Don't ignore ghost definitions.

	* c-simplify.c (simplify_function_tree): Return 0 if the function's
	body is not a COMPOUND_STMT.
	Return 0 if simplification failed.
	(simplify_expr): Change to return int.  Return non zero if
	simplification was successful.
	(c_simplify_expr): Add default case to avoid compile time warnings.
	(create_tmp_alias_var): Reformat comment.
	* tree-simple.h (simplify_expr): Change return type to int.

	* c-simplify.c: Guard consistency checks with #if defined CHECKING
	everywhere.
	* tree-cfg.c: Ditto.
	* tree-dfa.c: Ditto.
	* tree-ssa-ccp.c: Ditto.
	* tree-ssa.c: Ditto.

	* c-simplify.c: Include hard-reg-set.h, basic-block.h and
	tree-flow.h.
	(mark_not_simple_r): New function.
	(simplify_expr): Temporarily mark VA_ARG_EXPR and BIT_FIELD_REF
	trees as not simplifiable.
	(simplify_call_expr): If the builtin cannot be simplified, flag it.
	* Makefile.in (c-simplify.o): Update dependencies.
	* tree-dfa.c (create_ref): Variable references inside
	non-simplifiable expressions are always considered definitions.
	* tree-flow.h (TF_NOT_SIMPLE): New flag.
	* tree-simple.c (is_simplifiable_builtin): Update comments.

	* c-pretty-print.c (dump_c_node): Unparse anonymous structures and
	unions.
	Change rendering for SAVE_EXPR and BIT_FIELD_REF.

	* Makefile.in (tree-mudflap.o, tree-nomudflap.o): Add.

2002-08-11  Frank Ch. Eigler  <fche@redhat.com>

	Prototype -fmudflap support.
	* Makefile.in (C_AND_OBJC_OBJS): Add tree-mudflap.o.
	(OBJS): Add tree-nomudflap.o.
	* flags.h (flag_mudflap): New flag.
	* toplev.c: Map "-fmudflap" to that flag.
	* c-decl.c (c_expand_body): Call mudflap_c_function if flag_mudflap.
	* c-objc-common.c (c_objc_common_finish_file): Add mudflap hook.
	* varasm.c (make_decl_rtl): Add mudflap hook.
	(output_constant_def_contents): Ditto.
	* tree-mudflap.c: New file: implement mudflap instrumentation.
	* tree-nomudflap.c: New file: stub functions for non-C frontends.
	* tree-mudflap.h: New file: define exported functions.
	* gcc.c (MFLIB_SPEC, MFCC1_SPEC, MFCPP_SPEC): Add general
	-fmudflap spec mappings.
	* c-simplify.c (simplify_stmt): Stub: handle CLEANUP_STMT nodes.
	* tree-dfa.c (find_refs_in_stmt): Ditto.
	* c-pretty-print.c (dump_c_node): Ditto.
	(print_declaration): Handle "extern" decls.  Handle arrays with
	indefinite sizes.
	* tree-simple.h (is_simple_stmt, is_simple_compstmt): Remove decls.

2002-08-11  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (simplify_self_mod_expr): Unshare the lhs before
	using it again.
	(simplify_compound_lval): Don't unshare.

	* c-simplify.c (c_simplify_expr): Check statement_code_p.

	* c-simplify.c (maybe_fixup_loop_cond): Move to cp/cp-simplify.c.
	(simplify_for_stmt): Don't call it.
	(simplify_while_stmt): Don't call it.

2002-08-11  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_compound_lval): Use mostly_copy_tree_r.

2002-08-09  Jason Merrill  <jason@redhat.com>

	* langhooks-def.h: Replace the simplify_function_tree hook
	with a simplify_expr hook.
	* langhooks.h: Likewise.
	* langhooks.c: Replace lhd_simplify_function_tree with
	lhd_simplify_expr.
	* c-lang.c (LANG_HOOKS_SIMPLIFY_FUNCTION_TREE): Don't define.
	(LANG_HOOKS_SIMPLIFY_EXPR): Define.
	* c-decl.c (c_expand_body): De-hook simplify_function_tree.
	* c-common.h: Declare c_simplify_expr.
	* c-simplify.c (simplify_function_tree): Rename from
	c_simplify_function_tree.  Call simplify_expr instead of
	simplify_stmt.
	(c_simplify_expr): Split out from...
	(simplify_expr): ...here.  No longer static.  Call langhook.
	(is_simple_decl_stmt): Move here from tree-simple.c.
	* tree-simple.c: Don't include c-tree.h.
	(is_simple_stmt, is_simple_compstmt): Remove.
	(is_simple_decl_stmt): Move to c-simplify.c.
	* tree.h: Declare simplify_function_tree.
	* tree-simple.h: Declare simplify_expr, add_tree.

	* tree-simple.c (rationalize_compound_expr): New fn.

2002-08-07  Diego Novillo  <dnovillo@redhat.com>

	* basic-block.h (EDGE_TRUE_VALUE): Define.
	(EDGE_FALSE_VALUE): Define.
	* tree-cfg.c: Include c-tree.h.
	(make_for_stmt_edges): Call simple_cst_equal to determine infinite
	and zero iteration loops.
	Set EDGE_TRUE_VALUE and EDGE_FALSE_VALUE to edges coming out of
	predicate block.
	(make_while_stmt_edges): Ditto.
	(make_do_stmt_edges): Ditto.
	(make_if_stmt_edges): Set EDGE_TRUE_VALUE and EDGE_FALSE_VALUE to
	edges coming out of predicate block.

	* c-simplify.c (simplify_compound_lval): Unshare the compound
	reference before simplification.

	* tree-cfg.c (insert_before_ctrl_stmt): Call print_c_node instead of
	print_node_brief.
	(insert_before_normal_stmt): Ditto.
	(insert_after_ctrl_stmt): Ditto.
	(insert_after_normal_stmt): Ditto.
	(insert_after_loop_body): Ditto.
	(replace_expr_in_tree): Ditto.
	(tree_dump_bb): Ditto.

	* tree-dfa.c: Include c-tree.h
	(next_varref_id): New global variable.
	(tree_find_varrefs): Initialize it to 0.
	(create_ref): Increment it after creating a new reference.  Store
	it in ref.common.id.
	Add the new reference to the list of references for the containing
	expression.
	(dump_varref): Show the reference ID.
	* tree-flow.h (treeref_common): Add field 'id'.
	(VARREF_ID): Define.

	* tree-dump.c (dump_files): Re-order dump files.
	* tree.h (tree_dump_index): Ditto.

	* tree-optimize.c (optimize_function_tree): Remove blank lines.

	* tree-simple.c: Remove unary operator '!' from grammar.

	* tree-flow.h (tree_ann_def): Add field 'flags'.
	(TF_FOLD): Define.
	(TREE_ANN): Re-define into an lvalue.
	(BB_FOR_STMT): Ditto.
	(TREE_CURRDEF): Ditto.
	(next_varref_id): Declare.
	* tree-ssa-ccp.c: Include tree-simple.h
	(ssa_edges): Convert sbitmap into varray_type.  Update all uses.
	(decl_map): Remove.
	(SSA_NAME): Use VARREF_ID instead of DECL_UID.
	(visit_assignment): New function.
	(evaluate_expr_for): New function.
	(dump_lattice_value): New function.
	(tree_ssa_ccp): Add debugging dumps.
	Remove #if 0 code everywhere.
	(visit_phi_node): Add debugging dumps.
	Also visit PHI arguments.
	Remove basic block argument
	(visit_expression): Re-implement.
	(examine_flow_edges): Add debugging dumps.
	(ssa_ccp_substitute_constants): Add debugging dumps.
	Update comments.
	Mark and fold expressions with substituted constants.
	* tree-ssa.c (search_fud_chains): Don't check if BB_REFS(bb) is
	empty before iterating.
	Add comment explaining how we chain PHI node arguments to their
	originating basic block.

	* Makefile.in (tree-cfg.o, tree-dfa.o, tree-ssa-ccp.o): Update
	dependencies.

2002-07-29  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (tree_perform_ssapre): Ben forgot to add a
	dump_begin call when he removed the before dump.

2002-07-24  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ecr.c (ECR_new_with_type): Use correct number in mapping.

2002-07-23  Daniel Berlin  <dberlin@dberlin.org>

	* c-simplify.c (simplify_for_stmt): Deep copy the result of the
	tail_expression, so it's unshared.

2002-07-23  Daniel Berlin  <dberlin@dberlin.org>

	* tree-flow.h: Add prototype for create_alias_vars.

	* tree-alias-steen.c (display_points_to_set): New function.
	(init_alias_vars): Display points to sets when we are done.

	* disjoint-set.h (disjoint_set_def): ptr_alias to ECR_def so that
	we mark parent properly.

2002-07-24  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (GTFILES): Move tree-alias-type.[ch],
	tree-alias-ecr.[ch], tree-alias-steen.[ch] from ...
	* c-config-lang.in (gtfiles): ... here.

	* tree-simple.c (is_simplifiable_builtin): Replace
	BUILT_IN_VARARGS_START with BUILT_IN_VA_START.

2002-07-23  Andreas Jaeger  <aj@suse.de>

	* tree-ssa-pre.c (hash_expr_tree): Remove.

	* c-call-graph.c (write_dtd): Remove.

	* tree-ssa.c (delete_refs): Remove.

2002-07-23  Andreas Jaeger  <aj@suse.de>

	* gengtype.c (open_base_files): Add tree.h.

	* tree-alias-type.h: Remove inclusion of tree.h.

	* tree-alias-steen.c: Include tree.h.
	Add prototype for create_fun_alias_var_ptf.

	* tree-alias-ecr.c: Add prototype for ECR_add_pending.

	* tree-ssa-pre.c (calculate_preorder): Remove unused variables.

	* tree-simple.c: Include expr.h and rtl.h for prototypes.

	* tree-optimize.c: Include tree-alias-steen.h for prototypes.

	* Makefile.in (tree-optimize.o): Add tree-alias-steen.h.
	(tree-simple.o): Add expr.h and rtl.h.
	(tree-alias-steen.o): Add tree.h.

	* diagnostic.h: Add declaration of debug_output_buffer.

	* c-call-graph.c (construct_call_graph): Make static to follow
	declaration.
	(construct_call_graph): Use #if 0 instead of C++ comments to
	disable code.

2002-07-20  Andreas Jaeger  <aj@suse.de>

	* doc/invoke.texi (Option Summary): Fix syntax.

2002-07-19  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (simplify_return_stmt): Do simplify a returned
	expression in a void function.

	* c-simplify.c (simplify_stmt_expr): Handle C++ return semantics.

2002-07-19  Jason Merrill  <jason@redhat.com>

	* c-pretty-print.c (dump_c_node) [TARGET_EXPR]: Handle.
	[COND_EXPR]: Print a returned expression in a void function.

2002-07-19  Ben Elliston  <bje@redhat.com>

	* tree-ssa-pre.c (tree_perform_ssapre): Don't dump the original
	tree before applying this optimisation.

	* flags.h (flag_dump_tree_all_ssa): New flag.
	* toplev.c (flag_dump_tree_all_ssa): New flag.
	(f_options): Add "dump-tree-all-ssa" option.
	(process_options): Process flag_dump_tree_all_ssa.
	* tree.h (dump_enable_all_ssa): Declare.
	* tree-dump.c (dump_enable_all_ssa): New function.
	* doc/invoke.texi (Option Summary): Add -fdump-tree-all-ssa and
	-fdump-tree-ssapre options.
	(Debugging Options): Describe in more detail.
	* c-simplify.c (c_simplify_function_tree): Dump the original tree
	only if a TDI_original dump is requested, rather than TDI_simple.

	* tree-dump.c (dump_begin): Include phase number in dump filename.

2002-07-18  Ben Elliston  <bje@redhat.com>

	* tree-dump.c (dump_files): Rename "unparse" to "raw".
	* tree.h (TDF_UNPARSE): Rename from this ..
	(TDF_RAW): .. to this.
	* tree-ssa-pre.c (tree_perform_ssapre): Use TDF_RAW and invert the
	logical sense of this flag.
	* tree-ssa-ccp.c (tree_ssa_ccp): Likewise.
	* c-simplify.c (c_simplify_function_tree): Likewise.

2002-07-18  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c (calculate_preorder): New function.
	(tree_perform_ssapre): Use it, rather than
	flow_compute_preorder_tranversal, which seems to not do
	what we want.

2002-07-18  Daniel Berlin <dberlin@dberlin.org>

	* tree-alias-type.c: Move gt-tree-alias-type include to end of file.

	* tree-alias-steen.c: Move gt-tree-alias-steen include to end of file.

2002-07-18  Daniel Berlin  <dberlin@dberlin.org>

	* gengtype.c (get_base_file_bitmap): Mark tree-alias-* and
	disjoint-set* as c/c++/objc files only.

	* Makefile.in (gt-tree-alias-type.h): Add.
	(tree-alias-type.o): Add dependency on gt-tree-alias-type.h.

	* tree-alias-type.c: Include gt-tree-alias-type.h.
	(alias_bottom): Add a GTY marked version of alias_bottom here.

	* tree-alias-type.h: Remove the GTY marker from alias_bottom.

2002-07-17  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ecr.c (ECR_union_pending_sets): Only clear bitmap if
	it's not NULL.

2002-07-16  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (add_tree): Build an EXPR_STMT immediately.
	(convert_to_stmt_chain): Remove.
	(simplify_stmt, simplify_for_stmt, simplify_while_stmt,
	simplify_do_stmt, simplify_expr_wfl, tail_expression): Adjust.

2002-07-17  Daniel Berlin  <dberlin@dberlin.org>

	* tree-alias-ecr.c: New file. Equivalence Class Representation.

	* tree-alias-steen.c: New file. Steengaard Alias Analysis.

	* disjoint-set.c: New file. Disjoint set data structure.

	* tree-alias-type.c: New file. Alias types.

	* c-simplify.c (create_tmp_alias_var): New function, like
	create_tmp_var, but doesn't add it to the current binding.

	* tree-simple.h: Prototype for create_tmp_alias_var.

	* tree-optimize.c (build_tree_ssa): Create alias variables, if
	requested.

	* flags.h: Add flag_tree_points_to.

	* toplev.c: Ditto.

	* gengtype.c (open_base_files): Add disjoint-set.h,
	tree-alias-ecr.h, tree-alias-type.h, tree-flow.h.

	* Makefile.in (C_AND_OBJC_OBJS): Add disjoint-set.o,
	tree-alias-ecr.o, tree-alias-type.o, tree-alias-steen.o.
	(tree-alias-steen.o): Add dependencies.
	(tree-alias-ecr.o): Ditto.
	(tree-alias-type.o): Ditto.
	(disjoint-set.o): Ditto.

2002-07-10  Daniel Berlin  <dberlin@dberlin.org>
	    Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (C_AND_OBJC_OBJS): Add tree-ssa-ccp.o
	* flags.h (flag_tree_ssa_ccp): Declare.
	* fold-const.c (eval_subst): Make extern.
	* toplev.c (flag_tree_ssa_ccp): Define.
	(f_options): Document -ftree-ssa-ccp.
	* tree-dump.c (dump_files): Add -fdump-tree-ccp.
	* tree-flow.h (tree_perform_ssapre): Move declaration ...
	* tree-optimize.h: ... here.
	(tree_ssa_ccp): Declare.
	* tree-optimize.c (optimize_function_tree): Call tree_ssa_ccp.
	* tree-ssa-ccp.c: New file.
	* tree.c (next_decl_uid): Remove static declaration.
	* tree.h (next_decl_uid): Declare.
	(tree_dump_index): Add TDI_ccp.
	* cp/Make-lang.in (CXX_C_OBJS): Add tree-ssa-ccp.o.
	* doc/invoke.texi: Document -ftree-ssa-pre and -ftree-ssa-ccp.

2002-07-09  Daniel Berlin  <dberlin@dberlin.org>

	s/varrays of refs/ref_list of refs/g

	* tree-flow.h: Add ref_list structure.
	Add prototypes for ref_list functions.
	(FOR_EACH_REF, FOR_EACH_REF_REV): New macros to iterate through
	ref lists.
	* tree-cfg.c, tree-ssa.c, tree-ssa-pre.c: Update all uses.

	* tree-dfa.c (create_ref_list): New function.
	(delete_ref_list): Ditto.
	(empty_ref_list): Ditto.
	(add_ref_to_list_end): Ditto.
	(add_ref_to_list_begin): Ditto.
	(remove_ref_from_list): Ditto.

2002-07-04  Diego Novillo  <dnovillo@redhat.com>

	* tree-simple.c (is_simplifiable_builtin): Don't simplify target
	builtins.

2002-07-03  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_decl_stmt): Unshare the
	initializer nodes before simplification.

2002-06-29  Aldy Hernandez  <aldyh@quesejoda.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_call_expr): Do not bail on all builtins.
	(is_simple_call_expr): Same.
	(simplify_addr_expr): New function.
	(simplify_expr): Call it.

	* tree-simple.c (is_simplifiable_builtin): New.
	(is_simple_compound_lval): Do not bail on INDIRECT_REF.

	* tree-simple.h: New prototype for is_simplifiable_builtin.

2002-06-26  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa.c (tree_build_ssa): Call free_dominance_info, not
	free, on idom.

	* tree-ssa-pre.c (compute_domchildren): Update to use new
	dominance_info structure, rather than idom array.
	(tree_perform_ssapre): Don't forget to free the dominance info.

	s/VARRAY_FREE/VARRAY_CLEAR/g now that VARRAY's are ggc allocated.

2002-06-24  Diego Novillo  <dnovillo@redhat.com>

	* tree-ssa.c (build_fud_chains): Use dominance_info instead of int *.
	(search_fud_chains): Ditto.
	Call get_immediate_dominator.
	* tree-ssa-pre.c (a_dom_b): Call dominated_by_p.
	(pre_idom): Change type to dominance_info.  Update all uses.
	(pre_doms): Remove.  Update all uses.

2002-06-20  Jason Merrill  <jason@redhat.com>

	Simplify DECL_STMT, CONSTRUCTOR and COMPOUND_LITERAL_EXPR.
	* tree-simple.c (is_simple_decl_stmt): New fn.
	(is_simple_constructor, is_simple_constructor_elt): New fns.
	(is_simple_stmt, is_simple_unary_expr): Use them.
	(is_simple_modify_expr): Accept an INIT_EXPR.
	(is_simple_id): Don't allow a COMPOUND_LITERAL_EXPR.
	(is_simple_unary_expr): Here either.
	* c-simplify.c (simplify_decl_stmt, simplify_constructor): New fns.
	(simplify_compound_literal_expr): New fn.
	(simplify_stmt, simplify_expr): Use them.
	(get_initialized_tmp_var): Use an INIT_EXPR.
	(simplify_modify_expr): Accept an INIT_EXPR.
	(simplify_for_stmt): Call simplify_decl_stmt.
	(get_name): Don't crash if the decl is anonymous.
	(tail_expression): New fn.
	* tree-simple.h: Declare new fns.
	* c-pretty-print.c (dump_c_node) [INIT_EXPR]: Print like MODIFY_EXPR.
	(dump_c_node, op_prio): Handle COMPOUND_LITERAL_EXPR.
	* c-simplify.c (simplify_expr_wfl): Only wrap pre and post stuff
	that came from our subexpression.
	(simplify_stmt): Restore stmts_are_full_exprs_p.

	* c-simplify.c (simplify_expr_wfl): Bracket substatements with
	FILE_STMTs rather than wrapping them in EXPR_WITH_FILE_LOCATION.
	(simplify_stmt): Update lineno and input_filename from stmts.
	(simplify_expr et al): Don't copy lineno between stmts.  Don't pass
	enclosing stmt down.
	(update_line_number): Remove.

	* c-simplify.c (simplify_expr_stmt): Don't check
	is_last_stmt_of_scope.
	(simplify_stmt_expr): Check it here.  Set *expr_p to void_zero_node
	instead of NULL_TREE.
	(expr_has_effect): No need to deal with NULL exprs now.
	(simplify_expr_wfl): Likewise.

2002-06-18  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (strip_off_ending): Rename to remove_suffix.
	Update callers.
	(is_last_stmt_of_scope): New function.
	(simplify_expr_stmt): Call it.
	(stmt_has_effect): Ditto.
	(c_simplify_function_tree): Update comment.

2002-06-18  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (maybe_fixup_loop_cond): New fn for C++ conditions.
	(simplify_for_stmt, simplify_while_stmt): Use it.

	* c-pretty-print.c (dump_c_node) [COMPONENT_REF]: Print "->" if
	appropriate.

2002-06-19  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (simplify_stmt_expr): New fn.
	(simplify_expr): Call it.
	(stmt_expr_level): Remove.
	(stmt_has_effect, c_simplify_function_tree): Remove refs.
	(expr_has_effect): Deal with null expression.
	(simplify_expr_wfl): If the subexpression is simplified away, drop
	this one, too.  Don't wrap statements.
	* tree-simple.c (is_simple_unary_expr): Don't allow a STMT_EXPR.
	* tree-inline.c (copy_tree_r): Clear the aux field in the copies.

2002-06-17  Frank Ch. Eigler  <fche@redhat.com>

	* c-pretty-print.c (dump_c_node): Print pointer-type
	integer constants as raw numbers with a "B" (bytes) suffix.

2002-06-17  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (simplify_stmt): Take a tree *.
	(various): Adjust.

2002-06-16  Daniel Berlin  <dberlin@dberlin.org>

	* c-simplify.c (get_name): New function.
	(get_initialized_tmp_var): Use it to try to get a prefix for
	create_tmp_var from the value we are initializing to.
	(simplify_cond_expr): Add prefix for create_tmp_var.
	(create_tmp_var): Add prefix argument.

	* tree-simple.h: Change create_tmp_var prototype to match.

	* tree-ssa-pre.c: Change create_tmp_var call.

2002-06-15  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (c-decl.o): Add dependency on langhooks.h
	(c-simplify.o): Add dependency on flags.h, langhooks.h, toplev.h
	and rtl.h.
	* c-decl.c: Include langhooks.h.
	(c_expand_body): Simplify the function.  If it succeeds and
	-ftree-ssa is enabled, call optimize_function_tree.
	* c-simplify.c: Include flags.h, rtl.h and toplev.h.
	(simplify_expr_stmt): New function.
	(simplify_stmt): Call it.
	* tree-optimize.c: Don't include langhooks.h.
	(optimize_function_tree): Don't call lang_hooks.simplify_function_tree.

	* c-decl.c (c_expand_body): Do not simplify nor optimize the
	function if -fdisable-simple is given.
	* c-simplify.c (simplify_expr): Use is_simple_addr_expr_arg when
	simplifying ADDR_EXPR nodes.
	* flags.h (flag_disable_simple): Declare.
	* toplev.c (flag_disable_simple): Define.
	(f_options): Document -fdisable-simple.
	(process_options): Warn if -fdisable-simple is used with
	optimization enabled.
	* tree-simple.c (is_simple_addr_expr_arg): New function.
	(is_simple_unary_expr): Call it.
	* tree-simple.h (is_simple_addr_expr_arg): Declare.
	* doc/invoke.texi: Document -fdisable-simple.

	* c-pretty-print.c (dump_c_node): Handle DECL_STMT nodes inside
	FOR_INIT_STMT.
	* c-simplify.c (c_simplify_function_tree): Don't do anything if the
	program had errors.
	(simplify_stmt): Skip DECL_STMTs.
	(simplify_for_stmt): Handle DECL_STMT nodes inside FOR_INIT_STMT.
	(simplify_save_expr): New function.
	(simplify_expr): Call it.
	(tree_last_decl): Handle cases where DECL_STMTs are found before
	the body of the function.
	* tree-simple.c (is_simple_stmt): Handle DECL_STMT nodes inside
	FOR_INIT_STMT.
	(is_simple_compound_lval): Handle nodes wrapped in NON_LVALUE_EXPR.

2002-06-14  Frank Ch. Eigler  <fche@redhat.com>

	* c-pretty-print.c (dump_c_node): Print more type qualifiers,
	especially for pointers.

2002-06-11  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c: Remove folding markers.
	(insert_before_first): Remove unused function.
	* tree-cfg.c: Remove folding markers.
	* tree-dfa.c: Ditto.
	* tree-flow.h: Ditto.
	* tree-optimize.c: Ditto.
	* tree-optimize.h: Ditto.
	* tree-simple.c: Ditto.
	* tree-ssa.c: Ditto.

2002-06-11  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (add_tree): Don't deep-copy expressions.
	(simplify_for_stmt): Only deep-copy pre_cond_s the first time.
	Don't deep copy expr_chain.

2002-06-10  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (remove_bb_ann): Don't call VARRAY_FREE.
	* tree-dfa.c (create_ref): Use sizeof (ref) instead of
	refs->element_size.
	* tree.h (struct tree_common): Skip field 'aux' from GC type
	information.
	* tree-optimize.c (optimize_function_tree): Don't call
	VARRAY_REF.
	* tree-ssa.c (insert_phi_terms): Ditto.
	(delete_refs): Ditto.
	* c-simplify.c (simplify_array_ref): Ditto.
	* simple-break-elim.c: Disable whole file.
	* simple-goto-elim.c: Disable whole file.

2002-06-10  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (simplify_switch_stmt): Let simplify_expr handle
	post-effects.  Reorder.
	(simplify_if_stmt): Likewise.  Don't build redundant comparison.
	(simplify_do_stmt, simplify_while_stmt): Likewise.
	(simplify_for_stmt): Likewise.  Remove POST_P parm.
	(simplify_stmt): Adjust.
	(insert_before_first): #if 0, no longer used.

	* c-pretty-print.c (dump_c_node): Print FIX_TRUNC_EXPR, FLOAT_EXPR
	et al as casts.  Add parens as needed.

	* tree-simple.c (is_union_based_ref): New fn.
	(is_simple_min_lval): Use it.  Rename from is_simple_arraybase.
	(is_simple_arrayref): Adjust.  Use loop instead of recursion.
	(is_simple_compref): Likewise.
	(is_simple_compref_lhs): Remove.
	* tree-simple.h: Adjust.
	* c-simplify.c (simplify_array_ref): Adjust.
	(simplify_component_ref): Adjust.

	* c-simplify.c (simplify_expr_common): Tweak ordering.
	(get_initialized_tmp_var): Let simplify_expr handle post-effects.
	* tree-simple.c (is_simple_stmt): Accept an rhs for a return expr.

	* c-simplify.c (simplify_boolean_expr): Avoid redundant tests.
	Give the temp the appropriate type for a boolean value, and
	reconvert at the end.

	* c-simplify.c (simplify_self_mod_expr): Don't duplicate side-effects.

	* c-simplify.c (simplify_return_stmt): Accept a SIMPLE rhs.
	Just hand off to simplify_expr.

	* c-simplify.c (get_initialized_tmp_var): New fn.
	(simplify_expr_common): Use it.  Handle post-effects internally if
	POST_P is NULL.
	(is_simple_tmp_var): Rename from simple_tmp_var_p.
	* tree-simple.h: Adjust.

2002-06-09  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_return_stmt): Update folding markers.
	(build_addr_expr): Ditto.
	* langhooks.h (struct langhooks): Document simplify_function_tree
	hook.

2002-06-09  Jason Merrill  <jason@redhat.com>

	* c-simplify.c (simplify_expr_common): Handle creating both lvalue
	and rvalue temps.  Add new parameter to specify which.
	(simplify_expr): Now just a wrapper.
	(simplify_lvalue_expr): Likewise.
	(simplify_expr_either): New wrapper.
	(simplify_component_ref): Use it instead of simplify_lvalue_expr.

	* c-pretty-print.c (debug_c_tree): Add a trailing newline.
	(debug_c_node): Likewise.
	* gdbinit.in (pct): New macro, calls debug_c_tree.

2002-06-08  Jason Merrill  <jason@redhat.com>

	* tree-simple.c (is_simple_unary_expr): Only allow the address of
	a varname.
	(is_simple_id): Allow STRING_CST.
	* c-simplify.c (simplify_expr_common): Split out from simplify_expr.
	Do simplify ADDR_EXPR.
	(simplify_lvalue_expr): Use it and build_addr_expr.  Take
	simple_test_f.
	(simplify_modify_expr): Adjust.
	(build_addr_expr): New fn.
	(simplify_array_ref): Use simplify_lvalue_expr.
	(simplify_component_ref): Likewise.

	* tree-simple.c (is_simple_rhs): Remove condexpr rule.
	(is_simple_compref_lhs): Remove &ID.idlist rule.
	(is_simple_relop): New fn.
	(is_simple_binary_expr, is_simple_condexpr): Use it.
	* tree-simple.h: Declare it.

	* c-simplify.c (create_tmp_var): Refuse to create an array temp.
	(simple_tmp_var_p): New fn.
	(simplify_lvalue_expr): Use it; make sure we don't return a temp.
	* tree-simple.h: Declare it.

	* c-pretty-print.c (dump_c_node) [ARRAY_REF]: Wrap array in parens
	as needed.
	[COMPONENT_REF]: Likewise.
	[POINTER_TYPE]: Fix pointer-to-function handling.
	[ARRAY_TYPE]: Don't try to print an unknown dimension.

	* tree-simple.c (is_simple_arraybase): New function.
	(is_simple_arrayref): Use it to check the array base again.
	* tree-simple.h: Add declaration.
	* c-simplify.c (simplify_array_ref): Do simplify the base.
	* expr.c (expand_expr): First make sure the type has a size.

2002-06-07  Jason Merrill  <jason@redhat.com>

	* cppexp.c (num_equality_op): Use a temporary variable to work
	around gcc 3.0.4 bug.

2002-06-05  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (BOOT_CFLAGS): Remove -ftree-ssa.
	* c-decl.c (c_expand_body): Call optimize_function_tree if tree SSA
	is enabled.
	* c-lang.c (LANG_HOOKS_SIMPLIFY_FUNCTION_TREE): Define.
	* c-simplify.c (simplify_tree): Rename to c_simplify_function_tree.
	Update all callers.
	Dump function body before and after simplification if
	-fdump-tree-simple is used.
	(simplify_expr): Document FIXME for simplification of BIT_FIELD_REF
	nodes.
	* c-tree.h (simplify_tree): Rename to c_simplify_function_tree.
	* langhooks-def.h (LANG_HOOKS_SIMPLIFY_FUNCTION_TREE): Define
	(LANGHOOKS_INITIALIZER): Add LANG_HOOKS_SIMPLIFY_FUNCTION_TREE.
	(lhd_simplify_function_tree): Declare.
	* langhooks.c (lhd_simplify_function_tree): New function.
	* langhooks.h (lang_hooks): Add simplify_function_tree function
	pointer.
	* toplev.c (parse_options_and_default_flags): Set flag_tree_ssa to
	1 at optimization levels >= 1.
	Revert to default warning when -Wuninitialized is used without -O.
	* tree-cfg.c (tree_find_basic_blocks): Rename argument 't' to
	'fnbody'.
	* tree-optimize.c: Include langhooks.h.
	(optimize_tree): Rename to optimize_function_tree.  Update all
	users.
	Rename argument 't' to 'fndecl'.
	Call simplify langhook before building SSA.
	(build_tree_ssa): Rename argument 't' to 'fndecl'.
	Adjust call to tree_find_basic_blocks to pass body of the function.
	* tree-optimize.h (optimize_tree): Rename to
	optimize_function_tree.
	* tree-simple.c (is_simple_unary_expr): Document FIXME on
	BIT_FIELD_REF nodes.
	* tree-ssa.c: Add whitespace.
	* testsuite/lib/c-torture.exp: Remove -ftree-ssa flag.

2002-06-03  Daniel Berlin  <dberlin@dberlin.org>

	* tree-cfg.c (insert_before_*):  For insertion into FOR_INIT's, if
	we have an expression statement, transform into a compound
	expression.
	Pick the right place to insert a statement by iterating until we
	have a first_exec_stmt (first_non_decl_stmt) that is really the
	first executable non decl statement.
	(insert_after_*): Ditto.

2002-06-03  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-pre.c: Update BB stuff to new basic block structure.
	Add some comments throughout (more coming, particularly describing
	the algorithm, rather than the implementation).
	(free_expr_info): Free refs as well.
	(defs_y_dom_x): Handle unary expressions as well.
	(insert_euse_in_preorder_dt_order_1): Use block of ref, not block
	of statement.
	Don't insert exit blocks if we hit them before hitting an
	occurrence (it's pointless).
	(rename_2): Return set of phi operands we touched, don't forget to
	free VARRAY's we allocated.
	(rename_1): Correct downsafety computation. Now get exact same
	results as Open64.
	Correct setting of has_real_use.
	(finalize_1): Fix up insertion.
	(code_motion): Fix up insertion.

	* tree-dfa.c (dump_varref):  Improve dumping of expression
	references.

2002-06-03  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (delete_bb): Rename to tree_delete_bb.  Update callers.
	(tree_find_basic_blocks): Initializer last_basic_block.
	(create_bb): Update last_basic_block after creating a new block.
	(tree_cleanup_cfg): Delete unreachable blocks by traversing the
	linked list, not the array.  Update comments.
	(delete_bb): Update comments.
	(tree_dump_cfg): Also show last_basic_block.
	* tree-ssa.c (tree_build_ssa): Use last_basic_block instead of
	n_basic_blocks to allocate dominator arrays.
	(insert_phi_terms): Ditto.
	(search_fud_chains): User FOR_EACH_BB to look for dominator
	children.

2002-05-29  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (tree_find_basic_blocks): Set next_bb and prev_bb for
	ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR.
	(create_bb): Set flag BB_NEW for every newly created block.
	Call link_block to add the new block to the linked list.
	(tree_split_bb): Traverse basic blocks using FOR_EACH_BB.
	(make_goto_stmt_edges): Ditto.
	(remove_unreachable_blocks): Add reminder comment to stop
	compacting the basic block array every time a block is deleted.
	(delete_cfg): Traverse basic blocks using FOR_EACH_BB.
	(tree_dump_bb): Ditto.
	(tree_dump_cfg): Ditto.
	(tree_cfg2dot): Ditto.
	* tree-dfa.c (tree_find_varrefs): Ditto.
	(create_tree_ann): Ditto.
	(get_fcalls): Ditto.
	(find_declaration): Ditto.
	* tree-ssa.c (tree_build_ssa): Ditto.

2002-05-28  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in: Add -ftree-ssa to BOOT_CFLAGS.

2002-05-27  Diego Novillo  <dnovillo@redhat.com>

	* c-decl.c (c_expand_body): Close dump file before simplifying the
	function.
	* c-pretty-print.c (dump_c_node): Handle COMPLEX_CST,
	BIT_FIELD_REF, COMPLEX_EXPR, CONJ_EXPR, REALPART_EXPR,
	IMAGPART_EXPR and VA_ARG_EXPR nodes.
	Display all type casts, not just pointer casts.
	(op_prio): Handle LROTATE_EXPR, RROTATE_EXPR, REALPART_EXPR and
	IMAGPART_EXPR.
	* c-simplify.c: Include "tree-inline.h"
	(dump_file): New local variable.
	(dump_flags): New local variable.
	(stmt_expr_level): New local variable.
	(simplify_tree): Open and close dump file if
	-fdump-tree-simple-details is given.
	Initialize stmt_expr_level.
	(simplify_stmt): Dump statement before and after simplification if
	-fdump-tree-simple-detail is given.
	Unshare the expression of an EXPR_STMT before simplifying it.
	Call simplify_return_stmt to handle RETURN_STMT nodes.
	Do not simplify DECL_STMT nodes.
	Call stmt_has_effect before re-chaining side effects.
	(simplify_for_stmt): Do not return the simplified statement.
	Update all callers.
	Simplify FOR_BODY after the headers.
	Unshare loop header expressions before simplification.
	(simplify_while_stmt): Do not return the simplified statement.
	Update all callers.
	Simplify WHILE_BODY after the headers.
	Unshare the loop header expression before simplification.
	(simplify_do_stmt): Do not return the simplified statement.  Update
	all callers.
	Unshare the loop header expression before simplification.
	(simplify_if_stmt): Do not return the simplified statement.  Update
	all callers.
	Simplify the condition expression before the clauses.
	Unshare the condition expression before simplification.
	(simplify_switch_stmt): Do not return the simplified statement.
	Update all callers.
	Simplify the switch expression before the body.
	Unshare the switch expression before simplification.
	(simplify_decl_stmt): Remove.
	(simplify_expr): Remove argument 'needs_lvalue'.
	Add argument 'stmt'.
	Replace first argument 'expr' with a pointer to the
	expression 'expr_p'.
	Do not return the simplified expression.
	Update all callers and uses.
	Handle TRUTH_NOT_EXPR nodes.  Simplify SAVE_EXPR nodes into a
	SIMPLE id and remove the SAVE_EXPR node.
	Do not simplify BIT_FIELD_REF nodes.
	Remove code that tried to create new lvalues.
	(simplify_array_ref): Replace first argument 'expr' with a pointer
	to the expression 'expr_p'.
	Do not return the simplified expression.
	Add argument 'stmt'.
	Update all callers and uses.
	(simplify_self_mod_expr): Replace first argument 'expr' with a
	pointer to the expression 'expr_p'.
	Do not return the simplified expression.
	Add argument 'stmt'.
	Update all callers and uses.
	Call simplify_lvalue_expr to simplify a copy of the LHS into an
	lvalue for the new assignment.
	Simplify the new binary expression.
	(simplify_component_ref): Replace first argument 'expr' with a
	pointer to the expression 'expr_p'.
	Do not return the simplified expression.
	Add argument 'stmt'.
	Update all callers and uses.
	(simplify_call_expr): Ditto.
	(simplify_tree_list): Ditto.
	(simplify_cond_expr): Ditto.
	Build a replacement IF_STMT and call simplify_if_stmt() to process
	it.  Set the line number of the new statement from the statement
	containing the original expression.
	(simplify_modify_expr): Replace first argument 'expr' with a
	pointer to the expression 'expr_p'.
	Do not return the simplified expression.
	Add argument 'stmt'.
	Update all callers.
	Call simplify_lvalue_expr to simplify the LHS of the assignment.
	(simplify_boolean_expr): Replace first argument 'expr' with a
	pointer to the expression 'expr_p'.
	Do not return the simplified expression.
	Add argument 'stmt'.
	Update all callers.
	Build a new IF_STMT and simplify it all at once by calling
	simplify_if_stmt.
	(simplify_compound_expr): Replace first argument 'expr' with a
	pointer to the expression 'expr_p'.
	Do not return the simplified expression.
	Add argument 'stmt'.
	Update all callers.
	(simplify_expr_wfl): Ditto.
	(simplify_lvalue_expr): New function.
	(add_tree): Create a copy of each expression before adding it to
	the list.
	(deep_copy_node): Call copy_tree_r to copy expression nodes.
	(stmt_has_effect): Return nonzero if the statement may be the last
	statement of a statement expression body.
	(mostly_copy_tree_r): New function.
	* tree-dump.c (dump_options): Add 'details'.
	* tree-simple.c: Update documentation about ADDRESSOF expressions.
	(is_simple_stmt): Test for SIMPLE values when checking return
	statements.
	Accept all DECL_STMT nodes.
	(is_simple_compstmt): Return nonzero if T is NULL.  Do not test
	DECL_STMT nodes
	(is_simple_expr): Return nonzero if T is NULL.
	(is_simple_rhs): Ditto.
	(is_simple_modify_expr): Ditto.
	(is_simple_modify_expr_lhs): Ditto.
	(is_simple_binary_expr): Ditto.
	(is_simple_cond_expr): Ditto.
	(is_simple_unary_expr): Call STRIP_NOPS before testing T.
	Always accept ADDR_EXPR nodes.
	Always accept BIT_FIELD_REF nodes.
	(is_simple_call_expr): Return nonzero if T is NULL.
	(is_simple_const): Ditto.
	(is_simple_val): Ditto.
	(is_simple_compref): Ditto.
	(is_simple_compref_lhs): Ditto.
	(is_simple_cast): Ditto.
	(is_simple_cast_op): Ditto.
	(is_simple_id): Return nonzero if T is NULL.  Allow identifiers
	wrapped inside NON_LVALUE_EXPR and EXPR_WITH_FILE_LOCATION nodes.
	Allow real and imaginary parts of a complex variable.
	Allow compound literals.
	(is_simple_arrayref): Allow arrays of complex types.
	* tree.h (TDF_DETAILS): Define.
	* cp/pt.c (tsubst_template_parms): Check that 'parms' is non-NULL
	before calling TMPL_PARMS_DEPTH.
	* doc/invoke.texi: Document -fdump-tree-simple-details.

2002-05-10  Daniel Berlin  <dberlin@dberlin.org>

	* c-pretty-print.c (dump_c_node): Print "<unnamed whatever>" for
	types, variables, etc that have no name, rather than printing
	nothing.
	Handle PMF's properly.
	Print out structure initializers in a somewhat sensible way.
	Print SAVE_EXPR () around SAVE_EXPRs.
	(print_call_name): Handle EXPR_WITH_FILE_LOCATION.

2002-05-09  Daniel Berlin  <dberlin@dberlin.org>

	* tree-dfa.c (dump_varref): Tree inlining generates variables with
	no name. Don't crash on dumping varref's of them.

	* tree-inline.c (expand_call_inline): Generate a proper STMT_EXPR
	(it was missing COMPOUND_STMT).

2002-05-08  Daniel Berlin  <dberlin@dberlin.org>

	s/varref_type/treeref_type/g
	s/create_varref/create_ref/g

	* tree-flow.h: Add EXPRPHI, EXPRUSE, EXPRKILL, EXPRINJ.
	Add structures and macros for each.
	Add tree_perform_ssapre prototype.

	* Makefile.in (C_AND_OBJC_OBJS): Add tree-ssa-pre.o
	(tree-ssa-pre.o): Add dependencies for tree-ssa-pre.o

	* cp/Make-lang.in: Add tree-ssa-pre.o

	* flags.h: Add flag_tree_ssa_pre.

	* tree-ssa-pre.c: New file, SSA-PRE.

	* toplev.c: Add flag_tree_ssa_pre.
	(lang_independent_options): Add tree-ssa-pre.

	* tree-dump.c (dump_files): Add ssapre dump.

	* tree-optimize.c (optimize_tree): Do SSAPRE if requested.

	* tree.h (dump_index): Add TDI_ssa_pre.

	* tree-dfa.c (create_ref): Add support for creating the EXPR*'s refs.
	(dump_varref): Add support for dumping EXPR* refs.

	* tree-ssa.c (search_fud_chains): Add BB to VARDEF_PHI_CHAIN_BB.

2002-05-07  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c (op_prio): Handle ABS_EXPR.
	Don't abort when the operand is not recognized.
	(op_symbol): Don't abort when the operand is not recognized.
	* c-simplify.c (simplify_expr): Remove 'const' qualifier from first
	argument.
	Do not copy incoming expression.
	Exclude handling of MODIFY_EXPR, INIT_EXPR, SAVE_EXPR and binary
	expression nodes.
	(simplify_array_ref): Remove 'const' qualifier from first argument.
	Do not copy the incoming expression.
	(simplify_self_mod_expr): Ditto.
	Do not simplify the first operand twice.
	(simplify_component_ref): Remove 'const' qualifier from first
	argument.  Do not copy the incoming expression.
	(simplify_call_expr): Ditto.
	(simplify_tree_list): Ditto.
	(simplify_cond_expr): Ditto.
	(simplify_modify_expr): Ditto.
	(simplify_boolean_expr): Ditto.
	(simplify_compound_expr): Ditto.
	(simplify_save_expr): Ditto.
	(simplify_expr_wfl): Ditto.
	(tree_build_scope): Re-write.  Do nothing if block already contains
	a scope.  Use chainon to chain the body with the scope closing
	node.
	(deep_copy_node): Do not check for NULL nodes.  Do not deep copy
	declarations, types and constants.

2002-05-06  Daniel Berlin  <dberlin@dberlin.org>

	* c-simplify.c (deep_copy_node): Don't copy DECL_STMT_DECL's.

2002-05-06  Daniel Berlin  <dberlin@dberlin.org>

	* tree-simple.c (is_simple_compstmt): Don't post-initialize
	statics or aggregate initializers.

	* c-simplify.c (simplify_decl_stmt): Ditto.

2002-05-06  Sebastian Pop  <s.pop@laposte.net>

	* Makefile.in (simple-break-elim.o, simple-goto-elim.o, tree-dchain.o):
	Added.
	* c-decl.c: Include tree-dchain.h
	(c_expand_body): Add entry point to the goto, break elimination
	after the simplification pass.
	* simple-break-elim.c: New file.
	* simple-goto-elim.c: New file.
	* tree-dchain.h: New file.
	* tree-dchain.c: New file.

2002-05-02  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_expr): Constify first argument.
	Always work on a copy of the input expression.
	Do not simplify COMPOUND_LITERAL_EXPR nor CONSTRUCTOR nodes.
	(simplify_array_ref): Constify first argument.  Always work on a
	copy of the input expression.
	(simplify_self_mod_expr): Ditto.
	(simplify_component_ref): Ditto.
	(simplify_call_expr): Ditto.
	(simplify_tree_list): Ditto.
	(simplify_cond_expr): Ditto.
	When building the THEN_CLAUSE and ELSE_CLAUSE for the new IF_STMT,
	create a scope for them and simplify the scope, not the expression.
	(simplify_modify_expr): Constify first argument.  Always work on a
	copy of the input expression.
	(simplify_boolean_expr): Ditto.
	(simplify_compound_expr): Ditto.
	(simplify_save_expr): Ditto.
	(simplify_expr_wfl): Ditto.
	* tree-cfg.c (tree_find_basic_blocks): Update comments for
	-fdump-tree-dot.
	(tree_dump_cfg): Ditto.
	* tree-dump.c (dump_files): Rename -fdump-tree-graphviz to
	-fdump-tree-dot.
	* tree-simple.c (is_simple_unary_expr): Do not handle &CONST
	expressions.
	Handle COMPOUND_LITERAL_EXPR and CONSTRUCTOR nodes.
	(is_simple_const): Strip NOPS and handle &CONST expressions.
	* tree.h (enum tree_dump_index): Remove references to GraphViz.
	* doc/invoke.texi: Update documentation for -fdump-tree-dot.

2002-05-02  Sebastian Pop  <s.pop@laposte.net>

	* c-pretty-print.c (dump_c_node): Don't print declarations
	from the SCOPE_STMT_BLOCK, use the DECL_STMT instead.

2002-04-30  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c (NIY): Display an error string instead of aborting.
	(op_prio): Add support for COMPOUND_EXPR, TRUTH_XOR_EXPR, MIN_EXPR,
	MAX_EXPR and NON_LVALUE_EXPR.
	For EXPR_WITH_FILE_LOCATION nodes, return the priority of
	the internal node.
	(op_symbol): Add support for TRUTH_XOR_EXPR.
	* c-simplify.c (simplify_stmt): Only remove null statements that
	have been nullified by simplification.
	Call debug_tree() dump unhandled tree nodes.
	(simplify_for_stmt): Always deep-copy PRE_COND_S before adding it
	to PRE_P.
	(simplify_expr): When simplifying a MODIFY_EXPR node into an
	rvalue, return operand 0.
	Handle VA_ARG_EXPR, BIT_FIELD_REF and NON_LVALUE_EXPR nodes.
	Treat TRUTH_AND_EXPR, TRUTH_OR_EXPR and TRUTH_XOR_EXPR nodes as
	regular binary expressions.
	Call debug_tree() to dump an unhandled expression.
	(simplify_array_ref): Do not simplify the base of an array.
	(simplify_call_expr): Do not simplify calls to builtins.
	(simplify_cond_expr): Handle conditional expressions of type void.
	(simplify_boolean_expr): Return 'T != 0' instead of 'T'.
	(simplify_save_expr): Do not wrap statement trees inside SAVE_EXPR
	nodes.
	(tree_last_decl): Ignore FILE_STMT nodes preceding a SCOPE_STMT.
	* tree-simple.c: Update grammar to accept any valid C array as the
	array base.
	(is_simple_compstmt): Accept DECL_INITIAL expressions for read-only
	variables.
	(is_simple_expr): Do not abort if the incoming tree is NULL.
	(is_simple_modify_expr): Allow SAVE_EXPR, EXPR_WITH_FILE_LOCATION
	and NON_LVALUE_EXPR wrappers.
	(is_simple_binary_expr): Ditto.
	(is_simple_condexpr): Ditto.
	Accept TRUTH_AND_EXPR, TRUTH_OR_EXPR and TRUTH_XOR_EXPR.
	(is_simple_unary_expr): Do not abort it the incoming tree is NULL.
	Allow SAVE_EXPR, EXPR_WITH_FILE_LOCATION and NON_LVALUE_EXPR
	wrappers.
	Handle BIT_FIELD_REF and VA_ARG_EXPR nodes.
	(is_simple_call_expr): Always return 1 for builtin calls.
	(is_simple_arrayref): Do not check the array base.

2002-04-30  Daniel Berlin  <dberlin@dberlin.org>

	* c-simplify.c (simplify_call_expr): Don't try to simplify
	call_expr arglist if it's not there.

2002-04-27  Diego Novillo  <dnovillo@redhat.com>

	* c-decl.c (c_expand_body): Call simplify_tree to simplify a
	FUNCTION_DECL node.
	* c-simplify.c (simplify_tree): New function.
	(simplify_stmt): Remove variable 'new_vars'.  Update all called
	functions.
	Remove argument 'scope'.  Update all callers.
	Do not keep track of new scope statements as they are entered.
	Do not call declare_tmp_vars().
	(simplify_for_stmt): Remove argument new_vars_p.  Update all callers.
	(simplify_while_stmt): Ditto.
	(simplify_do_stmt): Ditto.
	(simplify_if_stmt): Ditto.
	(simplify_switch_stmt): Ditto.
	(simplify_decl_stmt): Reformat comments.
	(simplify_expr): Remove argument new_vars_p.  Update all callers.
	Call simplify_save_expr() to simplify SAVE_EXPR nodes.
	Call simplify_expr_wfl() to simplify EXPR_WITH_FILE_LOCATION nodes.
	Do not call is_unop() and is_binop() when checking for unary and
	binary operators.
	Do not return early after simplify statement-expressions.
	Do not call add_modify_stmt() to create assignment expressions.
	(simplify_array_ref): Remove argument new_vars_p.  Update all callers.
	(simplify_self_mod_expr): Ditto.
	(simplify_component_ref): Ditto.
	(simplify_call_expr): Ditto.
	(simplify_tree_list): Ditto.
	(simplify_cond_expr): Ditto.
	(simplify_modify_expr): Ditto.
	(simplify_boolean_expr): Ditto.
	(simplify_compound_expr): Ditto.
	(simplify_save_expr): New function.
	(simplify_expr_wfl): New function.
	(tree_build_scope): Reformat.
	(add_tree): Call stmt_has_effect() and expr_has_effect() to decide
	whether or not to add a new tree to the list.
	(add_modify_stmt): Remove.
	(create_tmp_var): Remove 'new_vars_p' argument.
	Call pushdecl() to insert the newly created variable in the current
	binding scope.
	(declare_tmp_vars): Do not create a BLOCK_VARS for the scope.
	(is_binop): Remove.
	(is_unop): Remove.
	(expr_has_effect): New function.
	* c-tree.h (simplify_tree): Remove second argument.
	* stmt.c (warn_if_unused_value): Check operand 0 of SAVE_EXPR
	nodes.
	* tree-dfa.c (find_refs_in_expr): Call find_refs_in_expr() to look
	inside an EXPR_WITH_FILE_LOCATION node.
	* tree-simple.c (is_simple_stmt): Add a case for SCOPE_STMT nodes.
	(is_simple_compstmt): Assume that T is the first tree in the
	compound statement's body.
	Stop when a scope ending SCOPE_STMT node is found.
	(is_simple_binary_expr): Don't call is_simple_binop().
	(is_simple_condexpr): Don't call is_simple_relop().
	(is_simple_binop): Remove.
	(is_simple_relop): Remove.
	(is_simple_unary_expr): Accept any operator with tree code class
	'1' followed by a simple value.
	Accept simple unary expressions wrapped inside SAVE_EXPR,
	EXPR_WITH_FILE_LOCATION and NON_LVALUE_EXPR nodes.
	(is_simple_id): Accept simple identifiers wrapped inside SAVE_EXPR,
	EXPR_WITH_FILE_LOCATION and NON_LVALUE_EXPR nodes.
	* tree-simple.h (create_tmp_var): Remove second argument.
	(is_simple_binop): Remove.
	(is_simple_relop): Remove.

2002-04-22  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (stmt_has_effect): New function.
	(simplify_stmt): Fix example code in comment.
	Use EXPR_STMT_EXPR to access the expression in an expression
	statement.
	Call debug_c_node to display unhandled statements.
	Call stmt_has_effect to determine whether the statement has been
	nullified by the simplification process.
	(simplify_for_stmt): Do not simplify the initialization expression
	if it's NULL.
	Do not convert post_cond_s into a statement chain.
	Do not simplify the expression if it's NULL.
	(simplify_switch_stmt): initialize post_cond_s to NULL before
	simplifying the expression.
	(simplify_expr): Rename argument IS_LHS to NEEDS_LVALUE.  Update
	all uses.
	When simplifying assignments, return the LHS of the assignment if
	the caller wants to use the assignment as an rvalue.
	Do not simplify ADDR_EXPR nodes.
	Handle NOP_EXPR, CONVERT_EXPR, FIX_TRUNC_EXPR, FIX_CEIL_EXPR,
	FIX_ROUND_EXPR, INDIRECT_REF, NEGATE_EXPR, INTEGER_CST, STRING_CST,
	COMPLEX_CST.
	Abort if the expression has not been simplified and cannot be used
	as an rvalue to assign it to a temporary.
	When creating a new temporary to hold an lvalue, if the expression
	is an indirect reference, use the address of the referenced object.
	When creating an indirect reference, use the pointed-to type as the
	type of the reference.
	(simplify_self_mod_expr): If the LHS operand needs to be
	simplified, simplify twice.  Once to produce an lvalue and another
	to produce a simple value.
	(simplify_modify_expr): Break assignment chains (a = b = c = ...)
	into individual assignments.
	(simplify_compound_expr):
	(create_tmp_var): If the type is an array, use TYPE_POINTER_TO as
	the pointer type.
	(update_line_number): Fix typo in comment.
	(is_unop): Ditto.
	(convert_to_stmt_chain): Only add statements that comply with
	stmt_has_effect().
	* tree-dfa.c (find_declaration): Fix typo in comment.
	(debug_varref): Ditto.
	* tree-flow.h: Ditto.
	* tree-simple.c (is_simple_stmt): New function.
	(is_simple_compstmt): New function.
	(is_simple_expr): Fix typo in comment.
	(is_simple_rhs): Allow conditional expressions.
	(is_simple_modify_expr): Fix typo in comment.
	(is_simple_modify_expr_lhs): Ditto.
	(is_simple_binary_expr): Ditto.
	(is_simple_condexpr): Ditto.
	(is_simple_relop): Ditto.
	(is_simple_unary_expr): Ditto.
	Allow taking the address of a constant (for strings).
	(is_simple_call_expr): Fix typo in comment.
	Call is_simple_id to determine if the first operand is a SIMPLE
	function identifier.
	(is_simple_arglist): Fix typo in comment.
	(is_simple_varname): Ditto.
	(is_simple_const): Don't accept casts of SIMPLE constants.
	(is_simple_id): Don't accept casts of SIMPLE identifiers.
	(is_simple_val): Fix typo in comment.
	(is_simple_arrayref): Ditto.
	(is_simple_compref): Ditto.
	(is_simple_compref_lhs): Ditto.
	(is_simple_cast_op): Ditto.
	(is_simple_exprseq): Allow NULL expression sequences.
	* tree-simple.h (is_simple_stmt): Declare
	(is_simple_compstmt): Declare.
	* tree-ssa.c (follow_chain): Fix typo in comment.

2002-04-22  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c (dump_c_node): Don't print function
	bodies of FUNCTION_DECL nodes.

2002-04-19  Andreas Jaeger  <aj@suse.de>

	* Makefile.in (c-call-graph.o): New.

2002-04-18  Sebastian Pop  <s.pop@laposte.net>

	* c-pretty-print.c (PRINT_FUNCTION_NAME): Define.
	(dump_c_node): Call pretty_print_string to print string.
	Call print_call_name to print function names.
	(pretty_print_string): New function.
	(print_call_name): New function.

2002-04-17  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_do_stmt): Call is_simple_condexpr to test
	if the conditional is in SIMPLE form.
	(simplify_if_stmt): Ditto.

2002-04-17  Diego Novillo  <dnovillo@redhat.com>

	* c-pretty-print.c (dump_c_node): Handle escape sequences in strings.
	(op_symbol): Handle TRUTH_NOT_EXPR.
	* c-simplify.c: Rename 'after' with 'post' and 'before' with 'pre'
	everywhere.
	Re-group some functions and add comments.
	(simplify_stmt): Update calls to simplify_for_stmt,
	simplify_while_stmt, simplify_do_stmt and simplify_switch_stmt.
	Call simplify_if_stmt.
	Do not test if expression is in SIMPLE form before calling
	simplify_expr.
	Call convert_to_stmt_chain to emit statement trees for side effects
	found while simplifying.
	(simplify_for_stmt): Re-implement.  Do not change structure of the
	statement.  Simplify each header expression and emit side effects
	at sequence points.
	(simplify_while_stmt): Ditto.
	(simplify_do_stmt): Ditto.
	(simplify_switch_stmt): Ditto.
	(new_simplified_if): Rename to simplify_if_stmt.
	Call simplify_expr to simplify the conditional.
	(simplify_if_stmt): New name for new_simplified_if.
	(simplify_expr): Do not default simple_test_f to is_simple_expr.
	If simple_test_f is not set, abort.
	Handle COMPOUND_EXPR, MODIFY_EXPR, TRUTH_ANDIF_EXPR,
	TRUTH_ORIF_EXPR, SAVE_EXPR and EXPR_WITH_FILE_LOCATION.
	(simplify_arglist): Rename to simplify_tree_list.
	(simplify_tree_list): New name for simplify_arglist.
	(simplify_boolean_expr): New function.
	(simplify_compound_expr): New function.
	(tree_build_scope): Use SCOPE_BEGIN_P instead of TREE_LANG_FLAG_0
	to access scope operands.  Use COMPOUND_BODY instead of
	TREE_OPERAND to access the body of the compound statement.
	(add_tree): Use a TREE_LIST container instead of directly chaining the
	trees.
	(add_assignment_tree): Rename to add_modify_stmt.  Update all
	callers.
	(add_modify_stmt): New name for add_assignment_tree.
	(insert_before_continue_end): Do nothing it the tree to insert is
	NULL.
	(copy_stmt_chain): Rename to deep_copy_list.  Update all callers.
	(deep_copy_list): New name for copy_stmt_chain.
	(copy_stmt): Rename to deep_copy_node.  Update all callers.
	(deep_copy_node): New name for copy_stmt.  Handle TREE_LIST
	trees.
	(insert_before_first): New function.
	(is_binop): Add COMPOUND_EXPR.
	(convert_to_stmt_chain): New function.
	* tree-cfg.c (make_for_stmt_blocks): Fix comment.
	* tree-simple.c (is_simple_condexpr): New function.
	(is_simple_const): Allow casts of SIMPLE constants.
	(is_simple_id): Allow casts of SIMPLE identifiers.
	(is_simple_cast): Call is_simple_cast_op.
	(is_simple_cast_op): New function.
	(is_simple_exprseq): New function.
	* tree-simple.h (deep_copy_list): Declare.
	(deep_copy_node): Declare.
	(is_simple_cast_op): Declare.
	(is_simple_exprseq): Declare.

2002-04-03  Diego Novillo  <dnovillo@redhat.com>

	* c-simplify.c (simplify_expr): Add arguments simple_tree_f and
	is_lhs.  Update all callers.
	Call simplify_call_expr, simplify_cond_expr, simplify_arglist and
	simplify_modify_expr.
	Call is_unop and is_binop to check for unary and binary operators.
	(simplify_binary_expr): Remove.
	(simplify_call_expr): New function.
	(simplify_arglist): New function.
	(simplify_cond_expr): New function.
	(simplify_modify_expr): New function.
	(keep_stmt_p): Remove.
	(is_binop): New function.
	(is_unop): New function.
	(simplify_stmt): Don't call keep_stmt_p.
	(simplify_decl_stmt): Call add_assignment_tree.
	* tree-simple.c: Include c-tree.h
	Add expression-statements to the SIMPLE grammar.
	(is_simple_modify_expr_lhs): New function.
	(is_simple_modify_expr): Call it.
	(is_simple_relop): Update comment.
	(is_simple_unary_expr): Allow expression-statements.
	(is_simple_arglist): New function.
	(is_simple_call_expr): Call it.
	(is_simple_id): Accept expressions taking the address of a
	function.
	* tree-simple.h (is_simple_modify_expr_lhs): Declare.
	(is_simple_arglist): Declare.

2002-03-21  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (c-simplify.o): Add dependency on varray.h.
	* c-simplify.c: Include varray.h.
	Remove comments with SIMPLE grammar.
	(simplify_array_ref): New.
	(simplify_self_mod_expr): New.
	(simplify_component_ref): New.
	(add_assignment_tree): New.
	(simplify_expr): Call simplify_array_ref to simplify array
	references.
	Call simplify_self_mod_expr to simplify ++, --, += and -=
	expressions.
	Call simplify_component_ref to simplify references to structures.
	(simplify_binary_expr): Do not check whether the expression is
	already in SIMPLE form.
	* tree-simple.c: Document changes from original SIMPLE grammar.
	(is_simple_unary_expr): Add check for *ID.
	(is_simple_call_expr): Update comments.
	(is_simple_const): Ditto.
	(is_simple_id): Do not accept *ID expressions.
	(is_simple_val): Update comments.
	(is_simple_arrayref): Accept any variable name as the base address.
	(is_simple_compref_lhs): New.
	(is_simple_compref): Call it.
	* tree-simple.h (is_simple_compref_lhs): Declare.

2002-03-18  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (C_AND_OBJC_OBJS): Add tree-simple.o
	(tree-simple.o): New rule.
	* c-simplify.c (simplified_p): Remove.
	(simplified_rec_p): Remove.
	(simplified_condition_p): Remove.
	(simplify_for_stmt): Call is_simple_expr instead of
	simplified_condition_p.
	(simplify_while_stmt): Ditto.
	(simplify_do_stmt): Call is_simple_expr instead of simplified_p.
	(new_simplified_if): Call is_simple_expr instead of
	simplified_rec_p.
	(simplify_decl_stmt): Update comment.
	(simplify_expr): Return the original expression if it's already
	in SIMPLE form.
	Do not special case most binary and unary expressions.
	When simplifying array references, create temporary variables to
	hold the base address for the array.
	Simplify COMPONENT_REF expressions separately.
	Call simplify_binary_expr to handle most binary expressions.
	(simplify_binary_expr): New function.
	(keep_stmt_p): Call is_simple_unary_expr to determine whether the
	statement should be kept or not.
	* tree-simple.c: New file.
	* tree-simple.h (is_simple_expr): Declare.
	(is_simple_rhs): Declare.
	(is_simple_modify_expr): Declare.
	(is_simple_binary_expr): Declare.
	(is_simple_binop): Declare.
	(is_simple_relop): Declare.
	(is_simple_unary_expr): Declare.
	(is_simple_call_expr): Declare.
	(is_simple_const): Declare.
	(is_simple_id): Declare.
	(is_simple_varname): Declare.
	(is_simple_val): Declare.
	(is_simple_arrayref): Declare.
	(is_simple_compref): Declare.
	(is_simple_cast): Declare.
	* cp/Make-lang.in (CXX_C_OBJS): Add tree-simple.o

2002-03-18  Diego Novillo  <dnovillo@redhat.com>

	* tree-simple.h: New file.
	* Makefile.in (c-simplify.o): Add dependency on tree-simple.h
	* c-simplify.c: Reformat some comments.
	(tree_last_decl): Declare.

2002-03-18  Sebastian Pop  <s.pop@laposte.net>

	* c-simplify.c (insert_stmt_chain): Delete.
	(simplified_condition_p, insert_after_case_labels): New.
	(simplify_stmt, simplify_for_stmt, simplify_while_stmt,
	simplify_do_stmt, new_simplified_if, simplify_switch_stmt):
	Returns a single node, generate a chain of statements to be executed
	before the if, and a list of new variables.
	(new_simplified_if): Simplify clauses.
	(simplify_expr): Remove unused parameter scope.

2002-03-14  Sebastian Pop  <s.pop@laposte.net>

	* c-simplify.c (simplify_switch_stmt, simplify_expr): Add scope
	parameter.
	(simplify_while_stmt, simplify_do_stmt, simplify_for_stmt): Avoid
	negating loop condition during simplification.
	(new_simplified_if): Don't simplify the IF_BODY.
	(copy_stmt_chain): Use copy_stmt.
	(copy_stmt): New function.

2002-02-28  Sebastian Pop  <s.pop@laposte.net>

	* tree-dfa.c (find_refs_in_stmt): Changed if/else statements in
	a switch.

2002-02-28  Sebastian Pop  <s.pop@laposte.net>

	* c-simplify.c (simplify_if_stmt): Deleted.
	(new_simplified_if): New function.
	(make_type_writable): New function.
	(insert_before_continue_end): New function.
	(insert_before_continue): New function.
	(copy_stmt_chain): New function.
	(insert_stmt_chain): New function.
	(update_line_number): New function.
	(simplified_p): New function.
	(simplified_rec_p) New function.
	(simplify_stmt): Modify the way to call simplification
	of COMPOUND_STMT, FOR_STMT, WHILE_STMT, DO_STMT, IF_STMT,
	and SCOPE_STMT in order to avoid to execute the code after
	the switch.  Add FILE_STMT, LABEL_STMT, GOTO_STMT, ASM_STMT cases.
	Simplified a little the code after the switch.
	(simplify_for_stmt): Change functions parameters.
	Add code to simplify the FOR_INIT_STMT, FOR_COND, FOR_EXPR.
	(simplify_while_stmt): Change functions parameters.
	Add code to simplify the WHILE_COND.
	(simplify_do_stmt): Change functions parameters.
	Add code to simplify the DO_COND.
	(simplify_switch_stmt): Change functions parameters.
	(simplify_expr): Remove scope parameter.
	Avoid to introduce a new temporary variable for an expression
	that is already simplified.
	([ARRAY|COMPONENT]_REF, COND_EXPR): Handle them apart.
	(TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR): Avoid to evaluate the second
	operand if the value can be deduced from the first one.
	(keep_stmt_p): Add some other cases in which we don't need to keep
	a statement after its simplification.

2002-02-28  Sebastian Pop  <s.pop@laposte.net>

	* Makefile.in: Add c-call-graph.o dependence.
	* c-call-graph.c: New file.
	* c-decl.c (c_expand_body): Add an entry point for call-graph.
	* tree-dump.c (dump_files): Add the flag dump-call-graph.
	* tree.h (tree_dump_index): Add TDI_xml.

2002-02-28  Sebastian Pop  <s.pop@laposte.net>

	* c-pretty-print.c (dump_c_tree): Declare it extern.
	(dump_c_node): Declare it extern.
	(dump_c_scope_vars): Deleted, some code moved in print_declaration ().
	(print_declaration): New function.
	(print_function_decl): New function.
	(print_struct_decl): New function.
	(INDENT_PRINT_C_NODE): Deleted.
	(INDENT): New macro.
	(NIY): Define the macro body in a block.
	(dump_c_node): Add dumping for TREE_PURPOSE operand in TREE_LIST.
	[VOID|INTEGER|REAL|COMPLEX|VECTOR|ENUMERAL|BOOLEAN|CHAR]_TYPE nodes:
	insert some code from print-tree.c:print_node_brief () in order to
	stabilise the type printing.
	[RECORD|UNION]_TYPE nodes: Don't print their contents by default,
	move the existing code in print_struct_decl ().
	[POSTDECREMENT|POSTINCREMENT]_EXPR: Print the operand in post postion.
	[MIN|MAX|ABS]_EXPR: New code for printing these nodes.
	FOR_STMT: Don't print the FOR_BODY if it is not present.
	RETURN_STMT: Don't print the return expression for a void function.
	ASM_STMT: New code for printing this node.
	SCOPE_STMT: Use print_declaration instead of dump_c_scope_vars.
	COMPOUND_LITERAL_EXPR: Add the node as not implemented yet.
	(op_prio): Fix switch indent.
	Add node EXPR_WITH_FILE_LOCATION with priority 16.
	(op_symbol): Fix switch indent.

2002-01-25  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (c-pretty-print.o): Add dependency on errors.h.
	* c-decl.c (c_expand_body): React to -ftree-dump-simple.
	* c-pretty-print.c: Fix typo in header comment.
	(NYI): Flush output buffer, dump the tree and abort.
	(dump_c_node): Add unparsing code for ERROR_MARK, IDENTIFIER_NODE,
	ARRAY_TYPE, UNION_TYPE, STRING_CST, CEIL_DIV_EXPR, FLOOR_DIV_EXPR,
	ROUND_DIV_EXPR, TRUNC_MOD_EXPR, FLOOR_MOD_EXPR, ROUND_MOD_EXPR,
	RDIV_EXPR, EXACT_DIV_EXPR, LROTATE_EXPR, RROTATE_EXPR,
	BIT_ANDTC_EXPR, BIT_NOT_EXPR, UNORDERED_EXPR, SAVE_EXPR and
	EXPR_WITH_FILE_LOCATION.
	Unify unparsing code for common binary and unary expressions.
	Handle indirect references like any other unary expression.
	(dump_c_scope_vars): Remove unused variable 'context'.
	Call dump_c_node to print the type.
	(dump_c_indirect_ref): Remove.
	(op_prio): New function.
	(op_symbol): New function.
	* c-simplify.c (simplify_stmt): Do not simplify a return
	expression, only its second operand.
	Fix capitalization in error message.
	(simplify_expr): Add documentation.
	Fix capitalization in error message.
	* tree-dump.c (dump_files): Add entry for -fdump-tree-simple.
	(dump_options): Add entry for -unparse.
	* tree.h (TDI_simple): Define.
	(TDF_UNPARSE): Define.
	* doc/invoke.texi: Document -fdump-tree-simple.

2002-01-23  Sebastian Pop  <s.pop@laposte.net>

	* c-pretty-print.c: Clean C++ comments.
	(debug_output_buffer): Remove declaration and definition.
	* diagnostic.h (debug_output_buffer): Add declaration.
	* diagnostic.c (debug_output_buffer): Add definition.

2002-01-21  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (find_refs_in_stmt): Fix capitalization in error
	message.
	(find_refs_in_expr): Ditto.

2002-01-20  Diego Novillo  <dnovillo@redhat.com>
	    Sebastian Pop  <s.pop@laposte.net>

	* Makefile.in: Add c-simplify.o.
	* cp/Make-lang.in: Ditto.
	* c-decl.c (c_expand_body): Call simplify_stmt() before
	calling optimize_tree().
	* c-simplify.c: New file.
	* c-tree.h (simplify_stmt): Declare.
	(print_c_tree)
	* tree-dfa.c (find_refs_in_stmt): Fix error message for unhandled
	statement codes.

2002-01-20  Sebastian Pop  <s.pop@laposte.net>

	* Makefile.in: Add c-pretty-print.o.
	* cp/Make-lang.in: Ditto.
	* c-pretty-print.c: New file.
	* c-tree.h (print_c_tree): Declare.
	(print_c_node): Declare.
	(debug_c_tree): Declare.
	(debug_c_node): Declare.

2001-12-29  Diego Novillo  <dnovillo@redhat.com>

	* c-lang.c (c_post_options): Move code to enable tree-ssa
	if -Wuninitialized is used ...
	* c-common.c (c_common_post_options): ... here.

2001-12-29  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-optimize.o): Don't depend on c-common.h
	* tree-cfg.c: Don't include c-tree.h.  Explain why we need to
	include c-common.h.
	* tree-dfa.c: Explain why we need to include c-common.h.
	* tree-ssa.c: Ditto.
	* tree-optimize.c: Don't include c-common.h

2001-12-21  Nathan Sidwell  <nathan@codesourcery.com>

	Revert my patch of 2001-07-23 for the moment.

2001-10-15  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (create_varref): If the new reference is inside a
	statement, add it to the list of references for that statement.

2001-10-14  Diego Novillo  <dnovillo@redhat.com>

	* Merge from mainline:

	Tue Sep 11 11:37:52 CEST 2001  Jan Hubicka  <jh@suse.cz>

		* basic-block.h (cached_make_edge): New.
		(make_edge): Remove first parameter.
		* flow.c (cached_make_edge): Rename from make_edge; return
		newly created edge; use obstack allocation.
		(make_edge): New.
		(flow_call_edges_add): Updaet make_edge call.
		(add_noreturn_fake_exit_edges): Likewise.
		(connect_infinite_loops_to_exit): Liekwise.
		(make_label_edge, make_edges, find_sub_basic_blocks): Use
		cached_make_edge.
		* profile.c (branch_prob): Update make_edge call.
		* ssa-dce.c (ssa_eliminate_dead_code): Likewise.

2001-10-14  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa.o): Remove dependency on flags.h.
	(tree-optimize.o): Add dependency on flags.h.
	* bb-reorder.c (fixup_reorder_chain): Update call to make_edge.
	* c-lang.c (c_post_options): Set flag_tree_ssa if -Wuninitialized
	is given.
	* ifcvt.c (find_if_case_1): Update call to make_edge.
	* toplev.c (toplev_main): Do not warn about -Wuninitialized without
	-O if -ftree-ssa is used.
	* tree-cfg.c (dot_dump_file): Remove.
	(dot_dump_flags): Remove.
	(cfg_dump_file): Rename to dump_file.
	(cfg_dump_flags): Rename to dump_flags.
	(remove_bb_ann): New function.
	(tree_find_basic_blocks): Do not open dump files at the beginning
	of the function.
	Do not call delete_cfg.
	Create annotations for ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR.
	(make_for_stmt_blocks): Update FOR_INIT_STMT_BB and FOR_COND_BB
	when creating the header blocks.
	Create the blocks for the loop body before the expression block.
	(make_while_stmt_blocks): Update END_WHILE_BB when creating the
	header blocks.
	Create the blocks for the loop body before the end-while block.
	(make_do_stmt_blocks): Update DO_COND_BB when creating header
	blocks.
	Create the blocks for the loop body before the block for DO_COND.
	(create_bb): When creating loop header blocks, allocate space for
	the header_blocks union.
	Call create_bb_ann to create a new annotation.
	(remove_bb_ann): New function.
	(tree_split_bb): New function.
	(make_edges): Remove first argument from call to make_edge,
	make_ctrl_stmt_edges, make_exit_edges, make_for_stmt_edges,
	make_while_stmt_edges, make_do_stmt_edges, make_if_stmt_edges,
	make_goto_stmt_edges, make_break_stmt_edges and
	make_continue_stmt_edges.
	When creating edges for the default label, remove the fallthru edge
	that was created for the associated SWITCH_STMT entry block.
	Do not call delete_unreachable_blocks.
	Call tree_cleanup_cfg.
	(make_ctrl_stmt_edges): Remove first argument.
	(make_exit_edges): Remove first argument.
	If the last element of the block is an EXPR_STMT, assume that it is
	the call to a non-returning function and make an edge to the exit
	block.
	Do not call make_return_stmt_edges.  Call make_edge directly.
	(make_for_stmt_edges): Remove first argument.
	Simplify the graph for infinite and zero-iteration loops.
	(make_while_stmt_edges): Remove first argument.
	Simplify the graph for infinite and zero-iteration loops.
	(make_do_stmt_edges): Remove first argument.
	Simplify the graph for infinite and one-iteration loops.
	(make_if_stmt_edges): Remove first argument.
	Simplify the graph for always-true and always-false conditionals.
	(make_goto_stmt_edges): Remove first argument.
	(make_break_stmt_edges): Remove first argument.
	(make_continue_stmt_edges): Remove first argument.
	(make_return_stmt_edges): Remove.
	(tree_cleanup_cfg): New function.
	(delete_unreachable_blocks): Do not react to -Wunreachable-code.
	Write to dump file blocks that have been removed.
	Call remove_edge.
	(is_ctrl_altering_stmt): If the statement contains a call to a
	non-returning function, return 1.
	(delete_cfg): Call remove_bb_ann.  Also remove annotations for
	ENTRY_BLOCK_PTR and EXIT_BLOCK_PTR.
	(latch_block): Use WHILE_COND_BB instead of END_WHILE_BB.
	(insert_stmt_tree_before): Use cfg_dump_file instead of dump_file.
	(insert_before_ctrl_stmt): Ditto.
	(insert_before_normal_stmt): Ditto.
	(insert_stmt_tree_after): Ditto.
	(insert_after_ctrl_stmt): Ditto.
	(insert_after_normal_stmt): Ditto.
	(replace_expr_in_tree): Ditto.
	(insert_bb_before): Ditto.
	* tree-dfa.c (tree_find_varrefs): Call find_refs_in_expr when the
	tree is not a statement.
	(find_refs_in_stmt): Update comments.
	Do not deal with FOR_STMT and DO_STMT trees separately.
	When processing VAR_DECLs, call find_refs_in_expr with the
	declaration, not its initial value.
	(find_refs_in_expr): When processing COMPONENT_REFs and ARRAY_REFs,
	recurse using the same reference type that was given by the
	original caller.
	(create_varref): Insert new PHI terms at the beginning of the
	BB_REFS array, not the end.
	* tree-flow.h (struct for_header_blocks): Declare.
	(union header_blocks): Declare.
	(struct bb_ann_def): Add new field 'loop_hdr'.
	(BB_ANN): Re-define so that it can be used as an lvalue.
	(BB_PARENT): Ditto.
	(BB_REFS): Ditto.
	(BB_PREV_CHAIN): Ditto.
	(BB_BINDING_SCOPE): Ditto.
	(BB_LOOP_HDR): Define.
	(FOR_INIT_STMT_BB): Redefine using BB_LOOP_HDR.
	(FOR_COND_BB): Ditto.
	(FOR_EXPR_BB): Ditto.
	(DO_COND_BB): Ditto.
	(END_WHILE_BB): New name for WHILE_COND_BB.
	(tree_warn_uninitialized): Declare.
	(tree_cleanup_cfg): Declare.
	(tree_split_bb): Declare.
	* tree-optimize.c: Include flags.h.
	(init_tree_flow): New function.
	(optimize_tree): Call build_tree_ssa instead of building SSA
	in-place.
	(build_tree_ssa): New function.
	* tree-optimize.h (build_tree_ssa): Declare.
	* tree-ssa.c: Don't include toplev.h
	(tree_warn_uninitialized): Define.
	(tree_compute_rdefs): Do not call is_upward_exposed.  Instead
	traverse all the uses of each variable and warn if the use is
	reached by the ghost definition.

2001-10-10  Graham Stott  <grahams@redhat.com>

	* tree-cfg.c (create_bb): Add new binding_scope parameter which allows
	the binding scope either to be explicitly specified if non-zero.
	(make_blocks): Update call to create_bb.
	(make_for_stmt_blocks): Ditto.
	(make_while_stmt_blocks): Ditto.
	(make_do_stmt_blocks): Ditto.
	(make_if_stmt_blocks): Ditto.
	(make_switch_stmt_blocks): Ditto.
	(create_maximal_bb): Ditto.
	(make_edges): If a statement expression is in the last basic
	block create an edge to EXIT_BLOCK_PTR and not the next block.
	(insert_before_normal_stmt): Pass the appropriate binding scope to
	create_bb.

2001-10-01  Graham Stott  <grahams@redhat.com>
	    Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (optimize_tree): Early return if the program has
	errors.

2001-09-30  Diego Novillo  <dnovillo@redhat.com>

	* tree-optimize.c (optimize_tree): Compute reaching definitions
	after building SSA.

2001-09-30  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (insert_after_ctrl_stmt): Remove unused argument.
	(make_blocks): Pop top element from scope binding stack when an end
	of scope statement is found.
	(create_bb): Remove code for popping top element from scope binding
	stack.
	Do not push basic block 0 to initialize scope binding stack.
	(insert_stmt_tree_after): Remove unused argument from call to
	insert_after_ctrl_stmt.
	(tree_dump_bb): Dump BB_BINDING_SCOPE if defined.
	* doc/invoke.texi: Document debugging option -ftree-dump-ssa-rdefs.

2001-09-29  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa.o): Update dependencies.
	(tree-cfg.o): Ditto.
	(tree-optimize.o): Ditto.
	* basic-block.h (BB_CONTROL_EXPR): Define.
	(BB_CONTROL_ENTRY): Define.
	* c-common.h (TDF_RDEFS): Define.
	* c-dump.c (dump_option_value_in): Add entry for TDF_RDEFS.
	* tree-cfg.c: Include flags.h and c-tree.h
	(binding_stack): New local variable.
	(delete_block): Rename to delete_bb.
	(tree_find_basic_blocks): Initialize varray 'binding_stack'.
	Call make_blocks with an additional argument.
	Adjust size of varray 'basic_block_info' after building CFG.
	(make_blocks): Add new argument prev_chain_p.
	Update all callers and callees.
	Create sub-graphs for statement-expressions.
	Update prev_chain_p when accessing the next tree in the chain.
	(make_for_stmt_blocks): Add new argument prev_chain_p.
	Update all callers and callees.
	Update flags for control header blocks with BB_CONTROL_ENTRY and/or
	BB_CONTROL_EXPR.
	(make_while_stmt_blocks): Ditto.
	(make_do_stmt_blocks): Ditto.
	(make_if_stmt_blocks): Ditto.
	(make_switch_stmt_blocks): Ditto.
	(create_maximal_bb): Add new argument prev_chain_p.
	Update all callers and callees.
	(create_bb): Add new argument prev_chain_p.
	Push basic block 0 the first time into the binding scope stack.
	Associate the new basic block to the binding scope at the top of
	the binding stack.
	Push new binding scopes when a SCOPE_BEGIN statement is found.
	Pop the top binding scope when a SCOPE_END statement is found.
	(make_edges): Handle statement expressions.
	Handle case labels preceded by scope statements in switch
	statements.
	(make_for_stmt_edges): Use FOR_INIT_STMT_BB, FOR_COND_BB and
	FOR_EXPR_BB to access the header basic blocks.
	(delete_unreachable_blocks): Call delete_bb instead of
	delete_block.
	(delete_block): Rename to delete_bb.
	(block_invalidates_loop): Use data references to find calls to
	non-pure functions.
	(is_ctrl_stmt): Reformat.
	(loop_body): New function.
	(set_loop_body): New function.
	(stmt_starts_bb_p): Statement expression trees also start a new
	basic block.
	(delete_cfg): Call VARRAY_FREE to delete all the references in each
	basic block.
	(latch_block): Use FOR_EXPR_BB, WHILE_COND_BB and DO_COND_BB to
	find out the latch block for the loop.
	(last_exec_stmt): New function.
	(is_exec_stmt): Scope statements that begin a scope are also
	considered executables.
	(is_statement_expression): New function.
	(first_non_decl_stmt): New function.
	(first_decl_stmt): New function.
	(first_non_label_in_bb): New function.
	(insert_stmt_tree_before): New function.
	(insert_before_ctrl_stmt): New function.
	(insert_before_normal_stmt): New function.
	(insert_stmt_tree_after): New function.
	(insert_after_ctrl_stmt): New function.
	(insert_after_normal_stmt): New function.
	(insert_after_loop_body): New function.
	(replace_expr_in_tree): New function.
	(find_expr_in_tree): New function.
	(insert_bb_before): New function.
	(tree_dump_bb): Display the contents of BB_PREV_CHAIN_P.
	* tree-dfa.c (tree_find_varrefs): Use accessor macros for array
	'referenced_symbols'.
	(find_refs_in_stmt): Do not process error_mark_node trees.
	Handle statement-expression nodes as any other statement tree.
	Do not call find_refs_in_stmt_expr.
	(find_refs_in_stmt_expr): Remove.
	(add_ref_to_sym): Remove.
	(add_ref_to_bb): Remove.
	(find_refs_in_expr): Do not process error_mark_node trees.
	ADDR_EXPR trees are not variable references except if used in a
	CALL_EXPR node.
	Handle EXPR_WITH_FILE_LOCATION nodes.
	(create_varref): Remove variable 'is_new'.
	Initialize data-flow arrays VARDEF_IMM_USES, VARDEF_RUSES,
	VARDEF_PHI_CHAIN and VARUSE_RDEFS.
	Do not call add_ref_to_sym and add_ref_to_bb.
	(add_ref_symbol): Use accessor macros for varray
	'referenced_symbols'.
	(function_may_recurse_p): New function.
	(get_fcalls): New function.
	(find_declaration): New function.
	(dump_varref): Handle NULL values of VARREF_EXPR.
	Use VARDEF_PHI_CHAIN instead of VARPHI_CHAIN.
	(dump_varref_list): Check if the list is NULL before traversing it.
	* tree-flow.h (struct vardef): Add fields 'ruses', 'marked' and
	'phi_chain'.
	(VARDEF_RUSES): Define.
	(VARDEF_MARKED): Define.
	(VARDEF_PHI_CHAIN): Define.
	(VARPHI_CHAIN): Remove.
	(struct varphi): Remove.
	(struct varuse): Add field 'rdefs'.
	(VARUSE_RDEFS): Define.
	(union varref_def): Remove field 'phi'.
	(IS_GHOST_DEF): Define.
	(IS_ARTIFICIAL_REF): Define.
	(struct bb_ann_def): Add fields 'prev_chain_p' and 'binding_scope'.
	(BB_PREV_CHAIN_P): Define.
	(BB_BINDING_SCOPE): Define.
	(FOR_INIT_STMT_BB): Define.
	(FOR_COND_BB): Define.
	(FOR_EXPR_BB): Define.
	(WHILE_COND_BB): Define.
	(DO_COND_BB): Define.
	(IF_COND_BB): Define.
	(CASE_COND_BB): Define.
	(NREF_SYMBOLS): Define.
	(REF_SYMBOL): Define.
	(ADD_REF_SYMBOL): Define.
	(FCALL_NON_PURE): Define.
	(FCALL_PURE): Define.
	(FCALL_BUILT_IN): Define.
	(loop_body): Declare.
	(set_loop_body): Declare.
	(last_exec_stmt): Declare.
	(is_statement_expression): Declare.
	(first_non_decl_stmt): Declare.
	(first_decl_stmt): Declare.
	(first_non_label_in_bb): Declare.
	(insert_stmt_tree_before): Declare.
	(insert_stmt_tree_after): Declare.
	(replace_expr_in_tree): Declare.
	(find_expr_in_tree): Declare.
	(insert_bb_before): Declare.
	(function_may_recurse_p): Declare.
	(get_fcalls): Declare.
	(find_declaration): Declare.
	(tree_compute_rdefs): Declare.
	(analyze_rdefs): Declare.
	(is_upward_exposed): Declare.
	* tree-optimize.c (optimize_tree): Update name for varray
	referenced_symbols.
	Free varray referenced_symbols and call delete_ssa on exit.
	* tree-ssa.c: Include flags.h, diagnostic.h and toplev.h.
	(tree_build_ssa): Create ghost definitions before building FUD
	chains.
	(insert_phi_terms): Use accessor macros for 'referenced_symbols'.
	Ignore ghost definitions when placing PHI terms.
	(build_fud_chains): Call get_tree_ann to create an annotation for
	the symbol if it doesn't already have one.
	(search_fud_chains): Reformat comments.
	Do not initialize varray VARDEF_IMM_USES.
	If a successor basic block does not have references, continue on to
	the next one, do not stop.
	Do not initialize varray VARDEF_PHI_CHAIN.
	(delete_ssa): New function.
	(delete_refs): New function.
	(tree_compute_rdefs): New function.
	(analyze_rdefs): New function.
	(follow_chain): New function.
	(is_upward_exposed): New function.

2001-09-14  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (tree_find_basic_blocks): Remove call to
	mark_critical_edges.
	(create_maximal_bb): Do not create annotations for non-executable
	statements.
	(map_stmt_to_bb): Rename basic_block_ann with bb_ann.
	(delete_cfg): Ditto.
	(is_exec_stmt): Reformat.
	(create_bb_ann): New function.
	* tree-dfa.c (create_node): Remove.
	(ref_symbols_list): Remove.
	(create_tree_ann): Declare.
	(referenced_symbols): Declare.
	(tree_find_varrefs): Replace usage of linked lists with variable
	arrays.
	(create_varref): Remove second argument from call to
	add_ref_symbol.
	Update comments.
	(add_ref_to_sym): Replace usage of linked lists with variable
	arrays.
	Declare static.
	(add_ref_to_bb): Ditto.
	(add_ref_symbol): Ditto.
	(dump_varref_list): Ditto.
	(debug_varref_list): Ditto.
	(create_varref_list): Remove.
	(push_ref): Remove.
	(create_node): Remove.
	(delete_varref_list): Remove.
	(get_tree_ann): Call create_tree_ann if the tree doesn't have an
	annotation already.
	(create_tree_ann): New function.
	* tree-flow.h (varref_list_def): Remove.
	(vardef): Change type of field 'imm_uses' to 'varray_type'.
	(varphi): Change type of field 'phi_chain' to 'varray_type'.
	(varref_node_def): Remove.
	(varref_node): Remove.
	(VARREF_NODE_ELEM): Remove.
	(VARREF_NODE_NEXT): Remove.
	(VARREF_NODE_PREV): Remove.
	(varref_list_def): Remove.
	(varref_list): Remove.
	(VARREF_LIST_FIRST): Remove.
	(VARREF_LIST_LAST): Remove.
	(tree_ann_def): Change type of field 'refs' to 'varray_type'.
	(basic_block_ann_def): Rename to 'bb_ann_def'.
	Change type of field 'refs' to 'varray_type'.
	(basic_block_ann): Rename to 'bb_ann'.
	(ref_symbols_list): Remove.
	(referenced_symbols): Declare.
	(add_ref_to_sym): Remove.
	(add_ref_to_bb): Remove.
	(add_ref_symbol): Remove.
	(remove_ann_from_sym): Remove.
	(create_varref_list): Remove.
	(push_ref): Remove.
	(delete_varref_list): Remove.
	(debug_varref_list): Update argument type to be 'varray_type'.
	(dump_varref_list): Ditto.
	* tree-optimize.c: Include 'basic-block.h'.
	(optimize_tree): Replace references to 'ref_symbols_list' with
	'referenced_symbols'.
	Remove call to delete_varref_list.
	* tree-ssa.c (insert_phi_terms): Rename 'work_list' to
	'work_stack'.
	Use VARRAY_PUSH and VARRAY_TOP to access 'work_stack' instead of
	maintaining the stack pointer in 'work_list_top'.
	Remove code to grow 'work_stack'.
	Remove references to 'work_list_top'.
	Replace references to 'ref_symbols_list' with 'referenced_symbols'.
	(build_fud_chains): Replace references to 'ref_symbols_list' with
	'referenced_symbols'.
	(search_fud_chains): If there are no variable references in the
	basic block, return early.
	Change usage of linked lists with variable arrays.

2001-09-07  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (tree_find_basic_blocks): Document how to traverse
	trees inside a basic block.
	(make_for_stmt_blocks): Make sure that there is always a block for
	FOR_EXPR, even if the loop does not have an expression.
	Create a separate block for FOR_INIT_STMT.
	(make_while_stmt_blocks): Always create an "end_while" block.
	(make_if_stmt_blocks): Do not store IF_COND in the header block of
	an IF statement.
	(make_for_stmt_edges): Create an edge from the block header to the
	block for FOR_INIT_STMT.
	Determine the first block of the loop body calling BB_FOR_STMT on
	the first executable statement in the body.
	Remove the special case for missing FOR_EXPR trees.
	(make_while_stmt_edges): Create a back edge from the end_while
	block to the header block.
	Determine the first block of the loop body calling BB_FOR_STMT on
	the first executable statement in the body.
	(make_do_stmt_edges): Determine the first block of the loop body
	calling BB_FOR_STMT on the first executable statement in the body.
	(condition_block): Rename to latch_block.  Return the latch
	block for the given loop header.
	(make_continue_stmt_edges): Rename condition_block to
	latch_block.
	(successor_block): Ditto.
	* tree-flow.h (condition_block): Rename to latch_block.

2001-09-06  Diego Novillo  <dnovillo@redhat.com>

	* tree-dfa.c (tree_find_varrefs): Use TDF_REFS instead of TDF_VARREF.
	* tree-flow.h (TDF_VARREF): Remove.

2001-09-04  Nathan Sidwell  <nathan@codesourcery.com>

	* c-common.h (tree_dump_index): Add more comments.
	(TDF_REFS): New dump flag.
	* c-dump.c (dump_files): Name flags `tree' rather than `ast'.
	(dump_option_value_info): New struct.
	(dump_options): New array.
	(dump_switch_p): Parse switch options symbolically.
	* doc/invoke.texi (-fdump-ast): Rename to ...
	(-fdump-tree): ... here. Document options are symbolic, and
	not all are applicable. Combine ssa related flags into the other
	tree dump flags.

2001-08-27  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (tree-ssa.o): Update dependencies.
	(tree-cfg.o): Ditto.
	(tree-dfa.o): Ditto.
	(tree-optimize.o): Ditto.

2001-08-26  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (C_AND_OBJC_OBJS): Replace tree-opt.o with
	tree-optimize.o.
	(c-decl.o): Ditto.
	(tree-ssa.o): Ditto.
	(tree-cfg.o): Ditto.
	(tree-dfa.o): Ditto.
	(tree-opt.o): Ditto.
	* c-decl.c: Replace tree-opt.h with tree-optimize.h.
	(c_expand_body): Remove call to init_tree_opt.
	* flow.c (flow_loop_dump): Do not display insn UIDs if this is not
	an RTL basic block.
	* tree-cfg.c: Replace tree-opt.h with tree-optimize.h.
	(block_invalidates_loop): New local function.
	(validate_loops): New function.
	(tree_dump_bb): Display the loop depth of the block.
	* tree-dfa.c: Replace tree-opt.h with tree-optimize.h.
	* tree-flow.h (validate_loops): Declare.
	* tree-opt.c: Rename to tree-optimize.c.
	* tree-opt.h: Rename to tree-optimize.h.
	* tree-optimize.c: Rename from tree-opt.c.
	* tree-optimize.h: Rename from tree-opt.h.
	* tree-ssa.c: Replace tree-opt.h with tree-optimize.h.
	(tree_build_ssa): Call tree_dump_bb instead of tree_debug_bb.
	* cp/Make-lang.in: Replace tree-opt.h with tree-optimize.h.

2001-08-20  Diego Novillo  <dnovillo@redhat.com>

	* basic-block.h (basic_block): Remove field 'reachable'.
	Add new field 'flags'.
	(BB_REACHABLE): Define.
	* c-common.h (tree_dump_index): Add TDI_cfg, TDI_dot, TDI_ssa.
	* c-decl.c (c_decode_option): Skip '-f' prefix before calling
	dump_switch_p.
	* c-dump.c (dump_file_info): Add entries for -fdump-tree-cfg,
	-fdump-tree-graphviz and -fdump-tree-ssa.
	* flow.c (find_unreachable_blocks): Use BB_REACHABLE bit in bb->flags
	instead of bb->reachable.
	(delete_unreachable_blocks): Ditto.
	* tree-cfg.c: Minor formatting changes throughout the file.
	(DEBUG_TREE_FLOW): Remove.
	(debug_tree_flow): Remove.
	(cfg_dump_file): New local variable.
	(dot_dump_file): New local variable.
	(cfg_dump_flags): New local variable.
	(dot_dump_flags): New local variable.
	(tree_find_basic_blocks): Remove unused arguments.
	Add code to react to -fdump-tree-cfg and -fdump-tree-graphviz.
	Remove uses of DEBUG_TREE_FLOW.
	(delete_unreachable_blocks): Use BB_REACHABLE bit in bb->flags
	instead of bb->reachable.
	(tree_dump_cfg): New.
	(tree_debug_cfg): Call tree_dump_cfg().
	(tree_cfg2dot): Accept a FILE pointer instead of a file name as
	argument.
	Name the graph with the current function name.
	* tree-dfa.c: Minor formatting changes throughout the file.
	(DEBUG_TREE_DFA): Remove.
	(debug_tree_dfa): Remove.
	(dump_file): New local variable.
	(dump_flags): New local variable.
	(tree_find_varrefs): Add code to react to -fdump-tree-ssa.
	Remove uses of DEBUG_TREE_DFA.
	(find_refs_in_expr): Remove uses of DEBUG_TREE_DFA.
	(create_varref): Replace VARREF_BLOCK with VARREF_BB.
	* tree-flow.h: Minor formatting changes throughout the file.
	(VARREF_BLOCK): Rename to VARREF_BB.
	(VARREF_NEXT): Remove.
	(VARREF_PREV): Remove.
	(TDF_VARREF): Define.
	(tree_find_basic_blocks): Remove unused arguments.
	(tree_dump_cfg): Declare.
	(tree_cfg2dot): Change argument to FILE *.
	* tree-opt.c: Minor formatting changes throughout the file.
	(optimize_tree): Remove unused arguments in call to
	tree_find_basic_blocks().
	* tree-opt.h: Ditto.
	* tree-ssa.c: Minor formatting changes throughout the file.
	(DEBUG_TREE_SSA): Remove.
	(debug_tree_ssa): Remove.
	(dump_file): New local variable.
	(dump_flags): New local variable.
	(tree_build_ssa): Add code to react to -fdump-tree-ssa.
	Remove uses of DEBUG_TREE_SSA.
	(insert_phi_terms): Remove uses of DEBUG_TREE_SSA.
	* doc/invoke.texi: Add documentation for -fdump-tree-cfg,
	-fdump-tree-graphviz and -fdump-tree-ssa.
	Replace existing references to -fdump-tree with -fdump-ast.

2001-08-10  Diego Novillo  <dnovillo@redhat.com>

	* basic-block.h (basic_block): Add new field 'reachable'.
	(expunge_block): Declare.
	* flow.c (ENTRY_BLOCK_PTR): Initialize field 'reachable'.
	(EXIT_BLOCK_PTR): Ditto.
	(expunge_block): Remove static declaration.
	(cleanup_cfg): Clear bb->aux on every basic block.
	(find_unreachable_blocks): Use field 'reachable' when computing
	reachability.
	(delete_unreachable_blocks): Use field 'reachable'.

	* tree-cfg.c: Rename all instance of 'node' with 'block.
	(get_successor_block): Rename to successor_block.
	(make_compound_stmt_edges): Remove.
	(make_switch_stmt_edges): Remove.
	(delete_unreachable_blocks): New.
	(delete_block): New.
	(make_blocks): Add new argument 'compound_stmt'.  Do not include
	COMPOUND_STMT trees in the flowgraph.
	(make_for_stmt_blocks): Include FOR_INIT_STMT in the entry block of
	the loop.
	If FOR_COND does not exist, create a tree holding the constant 1.
	Add new argument 'compound_stmt'.
	(make_while_stmt_blocks): Include WHILE_COND in the entry block of
	the loop.
	Add new argument 'compound_stmt'.
	(make_do_stmt_blocks): Add new argument 'compound_stmt'.
	(make_if_stmt_blocks): Add new argument 'compound_stmt'.
	Include IF_COND in the IF header block.
	(make_switch_stmt_blocks): Add new argument 'compound_stmt'.
	Include SWITCH_COND in the SWITCH header block.
	(create_maximal_bb): Remove argument 'is_loop_header'.
	Add new argument 'compound_stmt'.
	Update all callers.
	Return the newly created basic block instead of its last statement.
	Update comments.
	Do not store control flow altering statements in bb->exit_stmt.
	Only add executable statements to the block.
	Annotate with 'compound_stmt' each tree added to the block.
	(create_bb): Do not update annotation 'is_loop_header'.
	(make_edges): Remove naive reachability analysis.
	When a label node is found, add an edge from the immediately
	enclosing switch statement.
	Call delete_unreachable_blocks() after adding all the edges.
	(make_ctrl_stmt_edges): Do not consider COMPOUND_STMT trees.
	Do nothing for SWITCH_STMT trees.
	(make_exit_edges): Use bb->end_tree instead of BB_EXIT_STMT.
	(make_for_stmt_edges): Remove code that added edges for the block
	holding FOR_INIT_STMT.
	Update comments.
	Do not consider the case where FOR_COND is NULL.
	Call first_exec_stmt() to determine if FOR_BODY is empty.
	Only create an edge from expr_bb to cond_bb if FOR_EXPR is
	non-null.
	(make_while_stmt_edges): Remove code that added edges for the block
	holding WHILE_COND.
	Update comments.
	Call first_exec_stmt() to determine if WHILE_BODY is empty.
	(make_do_stmt_edges): Call first_exec_stmt() to determine if
	DO_BODY is empty.
	(make_if_stmt_edges): Remove code that added edges for the block
	holding IF_COND.
	Call first_exec_stmt() to determine if THEN_CLAUSE or ELSE_CLAUSE
	are empty.
	(make_switch_stmt_edges): Remove.
	(make_goto_stmt_edges): Use bb->end_tree instead of BB_EXIT_STMT.
	(make_break_stmt_edges): Use bb->end_tree instead of BB_EXIT_STMT.
	Call switch_parent() and loop_parent() to determine if the
	statement is inside an appropriate control structure.
	(make_continue_stmt_edges): Use bb->end_tree instead of
	BB_EXIT_STMT.
	(make_return_stmt_edges): Ditto.
	(get_successor_block): Rename to successor_block.
	Call first_exec_stmt() to find the first executable statement in
	TREE_CHAIN.
	(is_ctrl_stmt): Do not consider COMPOUND_STMT trees.
	(stmt_starts_bb_p): Ditto.
	(stmt_ends_bb_p): Reformat comments.
	(delete_cfg): Reformat comments.
	(find_loop_parent): Rename to loop_parent.
	(get_condition_block): Rename to condition_block.
	Update to use new index numbers for control structure header
	blocks.
	(switch_parent): New.
	(first_exec_stmt): New.
	(is_exec_stmt): New.
	(tree_cfg2dot): Reformat comments.
	* tree-dfa.c (find_refs): Remove.
	(find_refs_in_stmt): New
	(find_refs_in_stmt_expr): New.
	(tree_find_varrefs): Look for variables doing a CFG traversal
	instead of the trees.  Remove both arguments.
	(find_refs_in_expr): Add new argument 'bb'.
	Update all recursive calls.
	(create_varref): Abort if the basic block 'bb' is NULL.
	(add_ref_to_sym): Reformat comments.
	(add_ref_symbol): Ditto.
	(delete_varref_list): Ditto.
	* tree-flow.h (struct tree_ann_def): Add 'compound_stmt'.
	(TREE_COMPOUND_STMT): New macro.
	(struct basic_block_ann_def): Remove 'exit_stmt' and
	'is_loop_header'.
	(BB_EXIT_STMT): Remove.
	(BB_IS_LOOP_HEADER): Remove.
	* tree-opt.c (optimize_tree): Call tree_find_varrefs() with no
	arguments.
	Only build DFA and SSA information if n_basic_blocks is greater
	than zero.
	* tree-ssa.c: Rename all instances of 'node' with 'block'.
	(tree_build_ssa): Reformat comments.
	(insert_phi_terms): Ditto.

2001-08-01  Diego Novillo  <dnovillo@redhat.com>

	* tree-cfg.c (USE_TREE_IL): Remove.
	(make_back_edges): Remove.
	(make_fallthru_edge): Remove.
	(get_outermost_scope_block): Remove.
	(is_last_block_of_loop): Remove.
	(tree_find_basic_blocks): Do not return early if 'errorcount' is set.
	(make_edges): Do not treat back edges as a separate case.
	Do not call make_fallthru_edge to create fall-through edges.
	Do not emit a warning for unreachable blocks containing a single
	closing brace.
	(make_do_stmt_edges): Update comment.
	(make_goto_stmt_edges): Do not call get_outermost_scope_block().
	(make_break_stmt_edges): Do not call get_outermost_scope_block().
	Do not call make_back_edges().
	(make_continue_stmt_edges): Call find_loop_parent().  Emit an error
	if the 'continue' statement is not inside a loop.  Call
	get_condition_block() to find the target node.
	(make_return_stmt_edges): Do not call get_outermost_scope_block().
	(get_successor_block): Return EXIT_BLOCK_PTR if 'bb' is the last
	block in the graph.
	Return the condition node of the loop if 'bb' doesn't have a
	natural successor and its parent is a loop header.
	(tree_cfg2dot): Output fake edges with dotted lines.
	* tree-dfa.c (USE_TREE_IL): Remove.
	* tree-opt.c (USE_TREE_IL): Remove.
	* tree-ssa.c (USE_TREE_IL): Remove.
	* tree-flow.h (is_last_block_of_loop): Remove.

2001-07-23  Diego Novillo  <dnovillo@redhat.com>

	* Makefile.in (C_AND_OBJC_OBJS): Add tree-cfg.o, tree-dfa.o,
	tree-ssa.o and tree-opt.o.
	(c-decl.o): Add dependency on tree-opt.h
	(tree-ssa.o): New rule.
	(tree-cfg.o): New rule.
	(tree-dfa.o): New rule.
	(tree-opt.o): New rule.
	* c-decl.c: Include tree-opt.h.
	(c_expand_body): Call optimize_tree() when the -ftree-ssa flag is
	given.
	* flags.h (flag_tree_ssa): Declare.
	* toplev.c (flag_tree_ssa): Define.
	(lang_independent_options): Add -ftree-ssa.
	* tree-cfg.c: New file.
	* tree-dfa.c: New file.
	* tree-flow.h: New file.
	* tree-opt.c: New file.
	* tree-opt.h: New file.
	* tree-ssa.c: New file.
	* cp/Make-lang.in (CXX_C_OBJS): Add tree-cfg.o, tree-dfa.o,
	tree-opt.o and tree-ssa.o.
	* doc/invoke.texi: Add documentation for -ftree-ssa.

2001-07-23  Nathan Sidwell  <nathan@codesourcery.com>

	* Makefile.in (calls.o): Depend on intl.h.
	* calls.c: Include intl.h.
	(ECF_NEED_STACK_FRAME, ECF_NEED_ARG_FRAME): New flags.
	(special_function_p): Detect when we need a stack or arg
	frame. Don't optimize on length.
	(setjmp_call_p): Remove.
	(uninlinable_call_p): New function.
	* tree.h (setjmp_call_p): Remove.
	(uninlinable_call_p): Declare.

2001-07-22  Nathan Sidwell  <nathan@codesourcery.com>

	* params.def (PARAM_MAX_INLINE_AST): New parameter.
	(PARAM_ARG_INLINE_AST): New parameter.
	* doc/invoke.texi (max-inline-ast, arg-inline-ast): Document
	parameters.

Local Variables:
mode: change-log
change-log-default-name: "ChangeLog.tree-ssa"
End:


Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
OpenPOWER on IntegriCloud