[Bug tree-optimization/65450] [4.9 Regression]: Unaligned access with -O3 -mtune=k8

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65450

--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Jun  3 15:27:43 2015
New Revision: 224087

URL: https://gcc.gnu.org/viewcvs?rev=224087&root=gcc&view=rev
Log:
        Backported from mainline
        2015-03-18  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/65450
        * tree-vect-data-refs.c (vect_duplicate_ssa_name_ptr_info): New
        function.
        (vect_create_addr_base_for_vector_ref, vect_create_data_ref_ptr): Use
        it instead of duplicate_ssa_name_ptr_info.

        * gfortran.dg/pr65450.f90: New test.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/gfortran.dg/pr65450.f90
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_9-branch/gcc/tree-vect-data-refs.c