r235408 - in /branches/gcc-6-branch/gcc: Change...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Mon Apr 25 10:50:46 2016
New Revision: 235408

URL: https://gcc.gnu.org/viewcvs?rev=235408&root=gcc&view=rev
Log:
2016-04-25  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/70780
	* tree-ssa-pre.c (compute_antic_aux): Also return true if the block
	wasn't visited yet.
	(compute_antic): Mark blocks with abnormal preds as visited as
	they have a final empty antic-in solution already.

	* gcc.dg/torture/pr70780.c: New testcase.

Added:
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr70780.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/testsuite/ChangeLog
    branches/gcc-6-branch/gcc/tree-ssa-pre.c