[Bug tree-optimization/78189] [5 Regression] movaps generated for unaligned store in aligned struct, when struct is referenced via unaligned member.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78189

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Dec  9 12:35:56 2016
New Revision: 243481

URL: https://gcc.gnu.org/viewcvs?rev=243481&root=gcc&view=rev
Log:
2016-12-09  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2016-11-09  Richard Biener  <rguenther@suse.de>

        * tree-vect-data-refs.c (vect_compute_data_ref_alignment):
        Look at the DR_BASE_ADDRESS object for forcing alignment.

        2016-11-07  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/78189
        * tree-vect-data-refs.c (vect_compute_data_ref_alignment): Fix
        alignment computation.

        * g++.dg/torture/pr78189.C: New testcase.

Added:
    branches/gcc-6-branch/gcc/testsuite/g++.dg/torture/pr78189.C
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/testsuite/ChangeLog
    branches/gcc-6-branch/gcc/tree-vect-data-refs.c