[Bug tree-optimization/61403] An opportunity for x86 gcc vectorizer (~40% gain)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61403

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Oct  3 18:16:09 2014
New Revision: 215866

URL: https://gcc.gnu.org/viewcvs?rev=215866&root=gcc&view=rev
Log:
    PR tree-optimization/61403
    * config/i386/i386.c (expand_vec_perm_palignr): Fix a spelling
    error in comment.  Also optimize 256-bit vectors for AVX2
    or AVX (floating vectors only), provided the first permutation
    can be performed in one insn.

    * gcc.dg/torture/vshuf-32.inc: Add a new test 29.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/torture/vshuf-32.inc