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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/fold-const.c | 11 |
2 files changed, 16 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1138a1a3d14..2e2fad3fbe6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2007-04-18 Jan Hubicka <jh@suse.cz> + + * fold-const.c (div_if_zero_remainder): Do signed divide for pointer + types. + 2007-04-18 Eric Christopher <echristo@apple.com> * config/rs6000/darwin.md (load_macho_picbase): Use link register diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 857065f1344..b0a2bb7d91e 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -890,6 +890,17 @@ div_if_zero_remainder (enum tree_code code, tree arg1, tree arg2) int1l = TREE_INT_CST_LOW (arg1); int1h = TREE_INT_CST_HIGH (arg1); + /* &obj[0] + -128 really should be compiled as &obj[-8] rahter than + &obj[some_exotic_number]. */ + if (POINTER_TYPE_P (type)) + { + uns = false; + type = signed_type_for (type); + fit_double_type (int1l, int1h, &int1l, &int1h, + type); + } + else + fit_double_type (int1l, int1h, &int1l, &int1h, type); int2l = TREE_INT_CST_LOW (arg2); int2h = TREE_INT_CST_HIGH (arg2); |
