[Bug rtl-optimization/56766] Fails to combine (vec_select (vec_concat ...)) to (vec_merge ...)

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56766

--- Comment #28 from Uroš Bizjak <ubizjak at gmail dot com> ---
Author: uros
Date: Tue Jun 16 17:14:00 2015
New Revision: 224527

URL: https://gcc.gnu.org/viewcvs?rev=224527&root=gcc&view=rev
Log:
        PR target/56766
        * config/i386/sse.md (*avx_addsubv4df3_1): New insn pattern.
        (*avx_addsubv4df3_1s): Ditto.
        (*sse3_addsubv2df3_1): Ditto.
        (*sse3_addsubv2df3_1s): Ditto.
        (*avx_addsubv8sf3_1): Ditto.
        (*avx_addsubv8sf3_1s): Ditto.
        (*sse3_addsubv4sf3_1): Ditto.
        (*sse3_addsubv4sf3_1s): Ditto.

testsuite/ChangeLog:

        PR target/56766
        * gcc.target/i386/pr56766-1.c: New test.
        * gcc.target/i386/pr56766-2.c: Ditto.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr56766-1.c
    trunk/gcc/testsuite/gcc.target/i386/pr56766-2.c
Modified:
    trunk/gcc/config/i386/sse.md