[Bug tree-optimization/80181] [7 Regression] ICE in set_lattice_value, at tree-ssa-ccp.c:505

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80181

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar 27 12:52:13 2017
New Revision: 246500

URL: https://gcc.gnu.org/viewcvs?rev=246500&root=gcc&view=rev
Log:
2017-03-27  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/80181
        * tree-ssa-ccp.c (likely_value): UNDEFINED ^ X is UNDEFINED.

        * gcc.dg/torture/pr80181.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr80181.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c