[Bug target/84278] claims initv4sfv2sf is available but inits through stack

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84278

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Feb  8 12:53:19 2018
New Revision: 257483

URL: https://gcc.gnu.org/viewcvs?rev=257483&root=gcc&view=rev
Log:
2018-02-08  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/84278
        * tree-vect-stmts.c (vectorizable_store): When looking for
        smaller vector types to perform grouped strided loads/stores
        make sure the mode is supported by the target.
        (vectorizable_load): Likewise.

        * gcc.target/i386/pr84278.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr84278.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-stmts.c