[Bug middle-end/52580] [4.8 Regression] 171. swim performance drop on x86 – vectorization doesn’t happen anymore

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52580

--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-04-03 13:06:03 UTC ---
Author: rguenth
Date: Tue Apr  3 13:05:58 2012
New Revision: 186107

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186107
Log:
2012-04-03  Richard Guenther  <rguenther@suse.de>

    Backport from mainline
    2012-03-15  Richard Guenther  <rguenther@suse.de>

    PR middle-end/52580
    * tree-data-ref.c (subscript_dependence_tester_1): Check
    all dimensions for non-conflicting access functions.

    * gfortran.dg/vect/pr52580.f: New testcase.

Added:
    branches/gcc-4_7-branch/gcc/testsuite/gfortran.dg/vect/pr52580.f
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_7-branch/gcc/tree-data-ref.c