[Bug tree-optimization/65310] vectorizer uses wrong alignment

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65310

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Mar  5 09:14:01 2015
New Revision: 221206

URL: https://gcc.gnu.org/viewcvs?rev=221206&root=gcc&view=rev
Log:
2015-03-05  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/65310
    * tree-vect-data-refs.c (vect_compute_data_ref_alignment):
    Properly preserve alignment of the base of the access.

    * gcc.dg/vect/pr65310.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr65310.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-data-refs.c