[Bug tree-optimization/60382] [4.8 Regression] ICE on valid code at -O3 on x86_64-linux-gnu (in vect_create_epilog_for_reduction, at tree-vect-loop.c:4352)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60382

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue May 13 13:21:47 2014
New Revision: 210371

URL: http://gcc.gnu.org/viewcvs?rev=210371&root=gcc&view=rev
Log:
2014-05-13  Richard Biener  <rguent...@suse.de>

    Backport from mainline
    2014-03-04  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/60382
    * tree-vect-loop.c (vect_is_simple_reduction_1): Do not consider
    dead PHIs a reduction.

    * gcc.dg/vect/pr60382.c: New testcase.

Added:
    branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/vect/pr60382.c
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_7-branch/gcc/tree-vect-loop.c