[Bug tree-optimization/68559] Excessive peeling for gaps

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68559

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Nov 27 14:17:28 2015
New Revision: 231015

URL: https://gcc.gnu.org/viewcvs?rev=231015&root=gcc&view=rev
Log:
2015-11-27  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/68559
        * tree-vect-data-refs.c (vect_analyze_group_access_1): Move
        peeling for gap checks ...
        * tree-vect-stmts.c (vectorizable_load): ... here and relax
        for SLP.
        * tree-vect-loop.c (vect_analyze_loop_2): Re-set
        LOOP_VINFO_PEELING_FOR_GAPS before re-trying without SLP.

        * gcc.dg/vect/slp-perm-4.c: Adjust again.
        * gcc.dg/vect/pr45752.c: Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/vect/pr45752.c
    trunk/gcc/testsuite/gcc.dg/vect/slp-perm-4.c
    trunk/gcc/tree-vect-data-refs.c
    trunk/gcc/tree-vect-loop.c
    trunk/gcc/tree-vect-stmts.c