[Bug tree-optimization/59544] Vectorizing store with negative step

[meibf at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59544

--- Comment #1 from meibf at gcc dot gnu.org ---
Author: meibf
Date: Fri Dec 20 13:46:01 2013
New Revision: 206148

URL: http://gcc.gnu.org/viewcvs?rev=206148&root=gcc&view=rev
Log:
2013-12-20  Bingfeng Mei  <b...@broadcom.com>

    PR tree-optimization/59544
    * tree-vect-stmts.c (perm_mask_for_reverse): Move before
    vectorizable_store. 
    (vectorizable_store): Handle negative step.

    * gcc.target/i386/pr59544.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr59544.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-stmts.c