r257091 - in /trunk/gcc: ChangeLog dse.c testsu...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Jan 26 14:50:25 2018
New Revision: 257091

URL: https://gcc.gnu.org/viewcvs?rev=257091&root=gcc&view=rev
Log:
2018-01-26  Richard Biener  <rguenther@suse.de>

	PR rtl-optimization/84003
	* dse.c (record_store): Only record redundant stores when
	the earlier store aliases at least all accesses the later one does.

	* g++.dg/torture/pr77745.C: Mark foo noinline to trigger
	latent bug in DSE if NOINLINE is appropriately defined.
	* g++.dg/torture/pr77745-2.C: New testcase including pr77745.C
	and defining NOINLINE.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr77745-2.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dse.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/torture/pr77745.C