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re PR tree-optimization/41728 (error: SSA name in freelist but still referenced)

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2009-10-16  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/41728
	* tree-ssa-dom.c (optimize_stmt): Mark the stmt modified
	if fold_stmt did anything.

	* gcc.c-torture/compile/pr41728.c: New testcase.

From-SVN: r152910
This commit is contained in:
Richard Guenther 2009-10-16 16:57:31 +00:00 • committed by Richard Biener
parent 33662270d5
commit 076ba15715
4 changed files with 24 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2009-10-16 Richard Guenther <rguenther@suse.de>
PR tree-optimization/41728
* tree-ssa-dom.c (optimize_stmt): Mark the stmt modified
if fold_stmt did anything.
2009-10-16 Richard Guenther <rguenther@suse.de>
PR lto/41715

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2009-10-16 Richard Guenther <rguenther@suse.de>
PR tree-optimization/41728
* gcc.c-torture/compile/pr41728.c: New testcase.
2009-10-16 Richard Guenther <rguenther@suse.de>
PR lto/41598

12
gcc/testsuite/gcc.c-torture/compile/pr41728.c Normal file
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@ -0,0 +1,12 @@
int a[8];
int s244(void)
{
int lrc, j;
lrc = 0;
for (j=0; j<7; j++)
if(a[j] != a[j+1])
lrc = 1;
if (lrc != 0)
return 0;
return 1;
}

1
gcc/tree-ssa-dom.c
View file

@ -2099,6 +2099,7 @@ optimize_stmt (basic_block bb, gimple_stmt_iterator si)
if (fold_stmt (&si))
{
stmt = gsi_stmt (si);
gimple_set_modified (stmt, true);
if (dump_file && (dump_flags & TDF_DETAILS))
{