r251226 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Mon Aug 21 13:18:35 2017
New Revision: 251226

URL: https://gcc.gnu.org/viewcvs?rev=251226&root=gcc&view=rev
Log:
2017-08-21  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/81900
	* tree-ssa-pre.c (compute_antic_aux): Properly compute changed
	for blocks with abnormal predecessors.
	(compute_antic): Do not set visited flag prematurely.

	* gcc.dg/torture/pr81900.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr81900.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c