[Bug target/88152] optimize SSE & AVX char compares with subsequent movmskb

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88152

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 29 22:16:37 2018
New Revision: 266649

URL: https://gcc.gnu.org/viewcvs?rev=266649&root=gcc&view=rev
Log:
        PR target/88152
        * config/i386/sse.md (*<sse>_movmsk<ssemodesuffix><avxsizesuffix>_lt,
        *<sse>_movmsk<ssemodesuffix><avxsizesuffix>_zext_lt,
        *<sse>_movmsk<ssemodesuffix><avxsizesuffix>_shift,
        *<sse>_movmsk<ssemodesuffix><avxsizesuffix>_zext_shift,
        *<sse2_avx2>_pmovmskb_lt, *<sse2_avx2>_pmovmskb_zext_lt): New
        define_insn_and_split patterns.

        * g++.target/i386/pr88152.C: New test.

Added:
    trunk/gcc/testsuite/g++.target/i386/pr88152.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/sse.md
    trunk/gcc/testsuite/ChangeLog