[Bug rtl-optimization/84003] FAIL: g++.dg/torture/pr77745.C with noinline foo

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84003

--- Comment #5 from Richard Biener <rguenth at gcc dot 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  <rguent...@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