[Bug tree-optimization/81977] [5/6 Regression] Issue with inline memcpy with optimizations enabled

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81977

--- Comment #7 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Author: aldyh
Date: Wed Sep 13 17:32:20 2017
New Revision: 252587

URL: https://gcc.gnu.org/viewcvs?rev=252587&root=gcc&view=rev
Log:
2017-08-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/81977
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Fix look through
        memcpy.

        * g++.dg/torture/pr81977.C: New testcase.

Added:
    branches/range-gen2/gcc/testsuite/g++.dg/torture/pr81977.C
Modified:
    branches/range-gen2/gcc/ChangeLog
    branches/range-gen2/gcc/testsuite/ChangeLog
    branches/range-gen2/gcc/tree-ssa-sccvn.c