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
|
# RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple powerpc64le-unknown-linux-gnu \
# RUN: -run-pass=shrink-wrap -o - %s | FileCheck %s
--- |
; ModuleID = 'test.ll'
source_filename = "test.ll"
target datalayout = "e-m:e-i64:64-n32:64"
define signext i32 @shrinkwrapme(i32 signext %a, i32 signext %lim) {
entry:
%cmp5 = icmp sgt i32 %lim, 0
br i1 %cmp5, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader: ; preds = %entry
%0 = add i32 %lim, -1
%1 = zext i32 %0 to i64
%2 = add nuw nsw i64 %1, 1
call void @llvm.set.loop.iterations.i64(i64 %2)
br label %for.body
for.cond.cleanup: ; preds = %for.body, %entry
%Ret.0.lcssa = phi i32 [ 0, %entry ], [ %3, %for.body ]
ret i32 %Ret.0.lcssa
for.body: ; preds = %for.body, %for.body.preheader
%Ret.06 = phi i32 [ %3, %for.body ], [ 0, %for.body.preheader ]
%3 = tail call i32 asm "add $0, $1, $2", "=r,r,r,~{r14},~{r15},~{r16},~{r17},~{r18},~{r19},~{r20},~{r21},~{r22},~{r23},~{r24},~{r25},~{r26},~{r27},~{r28},~{r29},~{r30},~{r31}"(i32 %a, i32 %Ret.06)
%4 = call i1 @llvm.loop.decrement.i64(i64 1)
br i1 %4, label %for.body, label %for.cond.cleanup
}
; Function Attrs: noduplicate nounwind
declare void @llvm.set.loop.iterations.i64(i64) #0
; Function Attrs: noduplicate nounwind
declare i1 @llvm.loop.decrement.i64(i64) #0
; Function Attrs: nounwind
declare void @llvm.stackprotector(i8*, i8**) #1
attributes #0 = { noduplicate nounwind }
attributes #1 = { nounwind }
...
---
name: shrinkwrapme
alignment: 16
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
registers: []
liveins:
- { reg: '$x3', virtual-reg: '' }
- { reg: '$x4', virtual-reg: '' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 0
adjustsStack: false
hasCalls: false
stackProtector: ''
maxCallFrameSize: 4294967295
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 0
savePoint: ''
restorePoint: ''
fixedStack: []
stack: []
callSites: []
constants: []
machineFunctionInfo: {}
body: |
bb.0.entry:
successors: %bb.2(0x50000000), %bb.1(0x30000000)
liveins: $x3, $x4
renamable $cr0 = CMPWI renamable $r4, 1
BCC 4, killed renamable $cr0, %bb.2
bb.1:
successors: %bb.3(0x80000000)
renamable $r4 = LI 0
B %bb.3
bb.2.for.body.preheader:
successors: %bb.4(0x80000000)
liveins: $x3, $x4
renamable $r4 = ADDI renamable $r4, -1, implicit killed $x4, implicit-def $x4
renamable $x4 = RLDICL killed renamable $x4, 0, 32
renamable $x4 = nuw nsw ADDI8 killed renamable $x4, 1
MTCTR8loop killed renamable $x4, implicit-def dead $ctr8
renamable $r4 = LI 0
B %bb.4
bb.3.for.cond.cleanup:
liveins: $r4
renamable $x3 = EXTSW_32_64 killed renamable $r4
BLR8 implicit $lr8, implicit $rm, implicit $x3
bb.4.for.body:
successors: %bb.4(0x7c000000), %bb.3(0x04000000)
liveins: $r4, $x3
INLINEASM &"add $0, $1, $2", 0, 131082, def renamable $r4, 131081, renamable $r3, 131081, killed renamable $r4, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15, 12, implicit-def dead early-clobber $r16, 12, implicit-def dead early-clobber $r17, 12, implicit-def dead early-clobber $r18, 12, implicit-def dead early-clobber $r19, 12, implicit-def dead early-clobber $r20, 12, implicit-def dead early-clobber $r21, 12, implicit-def dead early-clobber $r22, 12, implicit-def dead early-clobber $r23, 12, implicit-def dead early-clobber $r24, 12, implicit-def dead early-clobber $r25, 12, implicit-def dead early-clobber $r26, 12, implicit-def dead early-clobber $r27, 12, implicit-def dead early-clobber $r28, 12, implicit-def dead early-clobber $r29, 12, implicit-def dead early-clobber $r30, 12, implicit-def dead early-clobber $r31
BDNZ8 %bb.4, implicit-def dead $ctr8, implicit $ctr8
B %bb.3
; CHECK: savePoint: ''
; CHECK-NEXT: restorePoint: ''
; CHECK: bb.4.for.body:
; CHECK-NEXT: successors: %bb.4(0x7c000000), %bb.3(0x04000000)
; CHECK-NEXT: liveins: $r4, $x3
; CHECK: INLINEASM
; CHECK-NEXT: BDNZ8 %bb.4
; CHECK-NEXT: B %bb.3
...
|
