[Bug tree-optimization/66510] [6 Regression] gcc.target/arm/pr53636.c FAILs after r224221

["rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66510

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jun 18 09:39:13 2015
New Revision: 224598

URL: https://gcc.gnu.org/viewcvs?rev=224598&root=gcc&view=rev
Log:
2015-06-18  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/66510
        * tree-vect-stmts.c (vectorizable_load): Properly compute the
        number of vector loads for SLP permuted loads.
        * tree-vect-data-refs.c (vect_compute_data_ref_alignment): Also
        check the stride for loop vectorization.
        (vect_enhance_data_refs_alignment): Deal with SLP adjusted
        vectorization factor.
        (vect_analyze_group_access): If the group size is not a power
        of two require a epilogue loop.
        * tree-vect-loop.c (vect_analyze_loop_2): Move alignment
        compute and optimizing and alias test pruning after final
        vectorization factor computation.
        * tree-vect-slp.c (vect_build_slp_tree_1): Remove check on
        vector alignment.
        (vect_transform_slp_perm_load): Properly compute the original
        number of vector load stmts.

        * gcc.dg/vect/slp-perm-12.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/slp-perm-12.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-data-refs.c
    trunk/gcc/tree-vect-loop.c
    trunk/gcc/tree-vect-slp.c
    trunk/gcc/tree-vect-stmts.c