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| author | obrien <obrien@FreeBSD.org> | 1999-11-01 08:28:22 +0000 |
|---|---|---|
| committer | obrien <obrien@FreeBSD.org> | 1999-11-01 08:28:22 +0000 |
| commit | 4b66dfb9030fa6d9912fcf3dfbe3fa8a4fa0a3fc (patch) | |
| tree | 0e33a2f257e9df8e4af5c0ecf0304ce5239fa3bf /contrib/gcc/fold-const.c | |
| parent | 1d061a7b0a9151a14d61c129611f720697c28e76 (diff) | |
| download | FreeBSD-src-4b66dfb9030fa6d9912fcf3dfbe3fa8a4fa0a3fc.zip FreeBSD-src-4b66dfb9030fa6d9912fcf3dfbe3fa8a4fa0a3fc.tar.gz | |
Virgin import of the GCC 2.95.2 compilers
Diffstat (limited to 'contrib/gcc/fold-const.c')
| -rw-r--r-- | contrib/gcc/fold-const.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/contrib/gcc/fold-const.c b/contrib/gcc/fold-const.c index dc9ca93..55dcf9b 100644 --- a/contrib/gcc/fold-const.c +++ b/contrib/gcc/fold-const.c @@ -2177,6 +2177,12 @@ operand_equal_p (arg0, arg1, only_const) TREE_OPERAND (arg1, 0), 0)); case 'r': + /* If either of the pointer (or reference) expressions we are dereferencing + contain a side effect, these cannot be equal. */ + if (TREE_SIDE_EFFECTS (arg0) + || TREE_SIDE_EFFECTS (arg1)) + return 0; + switch (TREE_CODE (arg0)) { case INDIRECT_REF: |
