[Bug tree-optimization/59651] [4.9 Regression] Vectorizer failing to spot dependence causes incorrect code generation.

[meibf at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59651

--- Comment #8 from meibf at gcc dot gnu.org ---
Author: meibf
Date: Fri Jan  3 15:40:57 2014
New Revision: 206319

URL: http://gcc.gnu.org/viewcvs?rev=206319&root=gcc&view=rev
Log:
2014-01-03  Bingfeng Mei <bmei@broadcom.com>

    PR tree-optimization/59651
    * tree-vect-loop-manip.c (vect_create_cond_for_alias_checks): 
    Address    range for negative step should be added by TYPE_SIZE_UNIT.

    PR tree-optimization/59651
    * gcc.dg/torture/pr59651.c: New test.
    * gcc.dg/vect/pr59651.c: Ditto.


Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr59651.c
    trunk/gcc/testsuite/gcc.dg/vect/pr59651.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-loop-manip.c