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re PR rtl-optimization/71634 (Invalid write with in mark_loops_for_removal (ira-build.c:2256) with --param ira-max-loops-num=0) 

Fix PR rtl-optimization/71634

	* ira-build.c (mark_loops_for_removal): Properly iterate
	loops.

From-SVN: r238247
This commit is contained in:
Martin Liska 2016-07-12 16:54:52 +02:00 committed by Martin Liska
parent 7cbadfdced
commit 5548d9cd19
2 changed files with 6 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2016-07-12 Martin Liska <mliska@suse.cz>
* ira-build.c (mark_loops_for_removal): Properly iterate
loops.
2016-07-12 Steven Bosscher <steven@gcc.gnu.org>
Richard Biener <rguenther@suse.de>

2
gcc/ira-build.c
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@ -2251,7 +2251,7 @@ mark_loops_for_removal (void)
);
}
qsort (sorted_loops, n, sizeof (ira_loop_tree_node_t), loop_compare_func);
for (i = 0; n - i + 1 > IRA_MAX_LOOPS_NUM; i++)
for (i = 0; i < n - IRA_MAX_LOOPS_NUM; i++)
{
sorted_loops[i]->to_remove_p = true;
if (internal_flag_ira_verbose > 1 && ira_dump_file != NULL)