[Bug tree-optimization/69907] [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=69907

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 24 08:27:25 2016
New Revision: 233655

URL: https://gcc.gnu.org/viewcvs?rev=233655&root=gcc&view=rev
Log:
2016-02-24  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/69907
        * tree-vect-stmts.c (vectorizable_load): Check for gaps at the
        end of permutations for BB vectorization.

        * gcc.dg/vect/bb-slp-pr69907.c: New testcase.
        * gcc.dg/vect/bb-slp-34.c: XFAIL.
        * gcc.dg/vect/bb-slp-pr68892.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/bb-slp-pr69907.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/vect/bb-slp-34.c
    trunk/gcc/testsuite/gcc.dg/vect/bb-slp-pr68892.c
    trunk/gcc/tree-vect-stmts.c