diff options
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: |
