r235622 - in /trunk/gcc: ChangeLog match.pd tes...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Apr 29 08:36:49 2016
New Revision: 235622

URL: https://gcc.gnu.org/viewcvs?rev=235622&root=gcc&view=rev
Log:
2016-04-29  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/13962
	PR tree-optimization/65686
	* tree-ssa-alias.h (ptrs_compare_unequal): Declare.
	* tree-ssa-alias.c (ptrs_compare_unequal): New function
	using PTA to compare pointers.
	* match.pd: Add pattern for pointer equality compare simplification
	using ptrs_compare_unequal.

	* gcc.dg/uninit-pr65686.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/uninit-pr65686.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-alias.c
    trunk/gcc/tree-ssa-alias.h