r235203 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Tue Apr 19 13:22:19 2016
New Revision: 235203

URL: https://gcc.gnu.org/viewcvs?rev=235203&root=gcc&view=rev
Log:
2016-04-19  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/70724
	* tree-ssa-sccvn.c (scc_vn_restore_ssa_info): Split SSA info
	restoring out from ...
	(free_scc_vn): ... here.
	* tree-ssa-sccvn.h (scc_vn_restore_ssa_info): Declare.
	* tres-ssa-pre.c (pass_pre::execute): Restore SSA info before
	tail merging.
	(pass_fre::execute): Restore SSA info.

	* gcc.dg/torture/pr70724.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr70724.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c
    trunk/gcc/tree-ssa-sccvn.c
    trunk/gcc/tree-ssa-sccvn.h