[Bug tree-optimization/66772] [6 Regression] ICE at -O2 and -O3 on x86_64-linux-gnu

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66772

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Jul  6 14:41:22 2015
New Revision: 225459

URL: https://gcc.gnu.org/viewcvs?rev=225459&root=gcc&view=rev
Log:
2015-07-06  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/66772
        * tree-ssa-ccp.c (ccp_visit_phi_node): Make sure that copy
        values are available in the PHI node BB when there are
        still unexecutable edges.

        * gcc.dg/torture/pr66772-1.c: New testcase.
        * gcc.dg/torture/pr66772-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr66733-1.c
    trunk/gcc/testsuite/gcc.dg/torture/pr66733-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c