r246534 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Tue Mar 28 13:57:43 2017
New Revision: 246534

URL: https://gcc.gnu.org/viewcvs?rev=246534&root=gcc&view=rev
Log:
2017-03-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/78644
	* tree-ssa-ccp.c (evaluate_stmt): When we may not use the value
	of a simplification result we may not use it at all.

	* gcc.dg/pr78644-1.c: New testcase.
	* gcc.dg/pr78644-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/pr78644-1.c
    trunk/gcc/testsuite/gcc.dg/pr78644-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c