[Bug target/88278] Fails to elide zeroing of upper vector register

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88278

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sun Dec  2 20:43:49 2018
New Revision: 266728

URL: https://gcc.gnu.org/viewcvs?rev=266728&root=gcc&view=rev
Log:
        PR target/88278
        * config/i386/sse.md (*vec_concatv4sf_0, *vec_concatv4si_0): New insns.

        * gcc.target/i386/pr88278.c: New test.
        * gcc.target/i386/pr53759.c: Don't expect vmovlps insn, expect vmovq
        instead.
        * gcc.target/i386/pr53759-2.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr53759-2.c
    trunk/gcc/testsuite/gcc.target/i386/pr88278.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/sse.md
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/pr53759.c