[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 #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri May 25 12:36:03 2018
New Revision: 260756

URL: https://gcc.gnu.org/viewcvs?rev=260756&root=gcc&view=rev
Log:
        PR target/85832
        * config/i386/sse.md (<avx512>_eq<mode>3<mask_scalar_merge_name>_1):
        Add (=Yk,v,C) variant using vptestm insn.  Use TARGET_AVX512BW
        in test instead of TARGET_AVX512F for VI12_AVX512VL iterator.

        * gcc.target/i386/avx512f-pr85832.c: New test.
        * gcc.target/i386/avx512vl-pr85832.c: New test.
        * gcc.target/i386/avx512bw-pr85832.c: New test.
        * gcc.target/i386/avx512vlbw-pr85832.c: New test.

Added:
    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
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/sse.md
    trunk/gcc/testsuite/ChangeLog