[Bug tree-optimization/81303] [8 Regression] 410.bwaves regression caused by r249919

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81303

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Dec  8 08:06:31 2017
New Revision: 255497

URL: https://gcc.gnu.org/viewcvs?rev=255497&root=gcc&view=rev
Log:
2017-12-08  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/81303
        * tree-vect-stmts.c (vect_is_simple_cond): For invariant
        conditions try to create a comparison vector type matching
        the data vector type.
        (vectorizable_condition): Adjust.
        * tree-vect-patterns.c (vect_recog_mask_conversion_pattern):
        Leave invariant conditions alone in case we can vectorize those.

        * gcc.target/i386/vectorize9.c: New testcase.
        * gcc.target/i386/vectorize10.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.target/i386/vectorize10.c
    trunk/gcc/testsuite/gcc.target/i386/vectorize9.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-patterns.c
    trunk/gcc/tree-vect-stmts.c