[Bug target/85832] [AVX512] possible shorter code when comparing with vector of zeros

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85832

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jun  4 13:49:55 2018
New Revision: 261148

URL: https://gcc.gnu.org/viewcvs?rev=261148&root=gcc&view=rev
Log:
        PR target/85832
        PR target/86036
        * config/i386/sse.md (<avx512>_eq<mode>3<mask_scalar_merge_name>_1):
        Use vptestnm rather than vptestm in (=Yc,v,C) variant.

        * gcc.target/i386/avx512f-pr85832.c: Expect vptestnm rather than
        vptestm.
        * gcc.target/i386/avx512vl-pr85832.c: Likewise.
        * gcc.target/i386/avx512vlbw-pr85832.c: Likewise.
        * gcc.target/i386/avx512bw-pr85832.c: Likewise.
        * gcc.target/i386/avx512bw-pr86036.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/avx512bw-pr86036.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/sse.md
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/avx512bw-pr85832.c
    trunk/gcc/testsuite/gcc.target/i386/avx512f-pr85832.c
    trunk/gcc/testsuite/gcc.target/i386/avx512vl-pr85832.c
    trunk/gcc/testsuite/gcc.target/i386/avx512vlbw-pr85832.c