[Bug tree-optimization/85834] [9 regression] ice in set_ssa_val_to, at tree-ssa-sccvn.c:3396

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85834

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue May 22 11:25:14 2018
New Revision: 260503

URL: https://gcc.gnu.org/viewcvs?rev=260503&root=gcc&view=rev
Log:
2018-05-22  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/85834
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Properly handle
        non-constant and non-zero memset arguments.

        * g++.dg/torture/pr85834.C: New testcase.
        * gcc.dg/tree-ssa/ssa-fre-64.c: Likewise.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr85834.C
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-64.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-sccvn.c