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* fold-const.c (operand_equal_p): Pay attention to side effects. 

From-SVN: r29483
This commit is contained in:
Gavin Romig-Koch 1999-09-17 19:06:50 +00:00 committed by Gavin Romig-Koch
parent 3f94eee685
commit 05ca599071
2 changed files with 10 additions and 0 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
Fri Sep 17 15:05:27 1999 Gavin Romig-Koch <gavin@cygnus.com>
* fold-const.c (operand_equal_p): Pay attention to side effects.
Fri Sep 17 11:14:17 1999 Jason Merrill <jason@yorick.cygnus.com>
* libgcc2.c (L_exit): Check for ON_EXIT, not HAVE_ON_EXIT.

6
gcc/fold-const.c
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@ -2183,6 +2183,12 @@ 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: