r173859 - in /branches/gcc-4_6-branch/gcc: Chan...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Wed May 18 13:24:05 2011
New Revision: 173859

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173859
Log:
2011-05-18  Richard Guenther  <rguenther@suse.de>

        Backport from mainline
        2011-05-12  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/48172
        * tree-vect-loop-manip.c (vect_vfa_segment_size): Do not exclude
        the number of iterations from the segment size calculation.
        (vect_create_cond_for_alias_checks): Adjust.

        2011-05-13  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/48172
        * tree-vect-loop-manip.c (vect_vfa_segment_size): Avoid
        multiplying by number of iterations for equal step.
        (vect_create_cond_for_alias_checks): Likewise.

        * gcc.dg/vect/pr48172.c: New testcase.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/vect/pr48172.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_6-branch/gcc/tree-vect-loop-manip.c