[Bug tree-optimization/80359] [7 Regression] DSE causes error: invalid reference prefix

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80359

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Apr 12 13:47:26 2017
New Revision: 246875

URL: https://gcc.gnu.org/viewcvs?rev=246875&root=gcc&view=rev
Log:
2017-04-12  Richard Biener  <rguent...@suse.de>
        Jeff Law  <l...@redhat.com>

        PR tree-optimization/80359
        * tree-ssa-dse.c (maybe_trim_partially_dead_store): Do not
        trim stores to TARGET_MEM_REFs.

        * gcc.dg/torture/pr80359.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr80359.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dse.c