[Bug tree-optimization/70138] [6 Regression] wrong code at -O3 on x86_64-linux-gnu

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70138

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Mar  9 16:41:19 2016
New Revision: 234086

URL: https://gcc.gnu.org/viewcvs?rev=234086&root=gcc&view=rev
Log:
2016-03-09  Richard Biener  <rguent...@suse.de>
        Jakub Jelinek  <ja...@redhat.com>

        PR tree-optimization/70138
        * tree-vect-loop-manip.c (vect_update_ivs_after_vectorizer):
        Also skip vect_double_reduction_def.

        * gcc.dg/vect/pr70138-1.c: New testcase.
        * gcc.dg/vect/pr70138-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr70138-1.c
    trunk/gcc/testsuite/gcc.dg/vect/pr70138-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-loop-manip.c