[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 #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-03-15 
10:04:59 UTC ---
Author: rguenth
Date: Thu Mar 15 10:04:55 2012
New Revision: 185426

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=185426
Log:
2012-03-15  Richard Guenther  <rguent...@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:
    trunk/gcc/testsuite/gfortran.dg/vect/pr52580.f
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-data-ref.c