[Bug target/72782] AVX512: No support for scalar broadcasts

[hjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72782

--- Comment #6 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Sat Oct 20 20:41:10 2018
New Revision: 265345

URL: https://gcc.gnu.org/viewcvs?rev=265345&root=gcc&view=rev
Log:
i386: Enable AVX512 memory broadcast for FP div

Many AVX512 vector operations can broadcast from a scalar memory source.
This patch enables memory broadcast for FP div operations.

gcc/

        PR target/72782
        * config/i386/sse.md (*<avx512>_div<mode>3<mask_name>_bcst): New.

gcc/testsuite/

        PR target/72782
        * gcc.target/i386/avx512f-div-df-zmm-1.c: New test.
        * gcc.target/i386/avx512f-div-sf-zmm-1.c: Likewise.
        * gcc.target/i386/avx512f-div-sf-zmm-2.c: Likewise.
        * gcc.target/i386/avx512f-div-sf-zmm-3.c: Likewise.
        * gcc.target/i386/avx512f-div-sf-zmm-4.c: Likewise.
        * gcc.target/i386/avx512f-div-sf-zmm-5.c: Likewise.
        * gcc.target/i386/avx512vl-div-sf-xmm-1.c: Likewise.
        * gcc.target/i386/avx512vl-div-sf-ymm-1.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.target/i386/avx512f-div-df-zmm-1.c
    trunk/gcc/testsuite/gcc.target/i386/avx512f-div-sf-zmm-1.c
    trunk/gcc/testsuite/gcc.target/i386/avx512f-div-sf-zmm-2.c
    trunk/gcc/testsuite/gcc.target/i386/avx512f-div-sf-zmm-3.c
    trunk/gcc/testsuite/gcc.target/i386/avx512f-div-sf-zmm-4.c
    trunk/gcc/testsuite/gcc.target/i386/avx512f-div-sf-zmm-5.c
    trunk/gcc/testsuite/gcc.target/i386/avx512vl-div-sf-xmm-1.c
    trunk/gcc/testsuite/gcc.target/i386/avx512vl-div-sf-ymm-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/sse.md
    trunk/gcc/testsuite/ChangeLog