PING [Patch] x86: Enable GCC support for Intel AVX-VNNI extension

[Hongyu Wang]

Hongyu Wang <wwwhhhyyy333@gmail.com> 于2020年10月14日周三 上午11:27写道：
>
> Hi:
>
> This patch is about to support Intel AVX-VNNI instructions.
>
> AVX-VNNI is an equivalent to AVX512-VNNI with VEX encoding. The instructions are same, but with extra {vex} prefix to distinguish from AVX512-VNNI instructions in assembler.
>
> For more details, please refer to https://software.intel.com/content/dam/develop/external/us/en/documents/architecture-instruction-set-extensions-programming-reference.pdf
>
> Bootstrap ok, regression test on i386/x86 backend is ok.
>
> OK for master?
>
> 2020-10-13  Hongtao Liu  <hongtao.liu@intel.com>
>         Hongyu Wang  <hongyu.wang@intel.com>
>
> gcc/
>     * common/config/i386/cpuinfo.h (get_available_features):
>     Detect AVXVNNI.
>     * common/config/i386/i386-common.c
>     (OPTION_MASK_ISA2_AVXVNNI_SET,
>     OPTION_MASK_ISA2_AVXVNNI_UNSET, OPTION_MASK_ISA2_AVX2_UNSET):
>     New.
>     (ix86_hanlde_option): Handle -mavxvnni, unset avxvnni when
>     avx2 is disabled.
>     * common/config/i386/i386-cpuinfo.h (enum processor_features):
>     Add FEATURE_AVXVNNI.
>     * common/config/i386/i386-isas.h: Add ISA_NAMES_TABLE_ENTRY
>     for avxvnni.
>     * config.gcc: Add avxvnniintrin.h.
>     * config/i386/avx512vnniintrin.h: Remove 128/256 bit non-mask
>     intrinsics.
>     * config/i386/avxvnniintrin.h: New header file.
>     * config/i386/cpuid.h (bit_AVXVNNI): New.
>     * config/i386/i386-builtins.c (def_builtin): Handle AVXVNNI mask
>     for unified builtin.
>     * config/i386/i386-builtin.def (BDESC): Adjust AVX512VNNI
>     builtins for AVXVNNI.
>     * config/i386/i386-c.c (ix86_target_macros_internal): Define
>     __AVXVNNI__.
>     * config/i386/i386-expand.c (ix86_expand_builtin): Handle bisa
>     for AVXVNNI to support unified intrinsic name, since there is no
>     dependency between AVX512VNNI and AVXVNNI.
>     * config/i386/i386-options.c (isa2_opts): Add -mavxvnni.
>     (ix86_valid_target_attribute_inner_p): Handle avxnnni.
>     (ix86_valid_target_attribute_inner_p): Ditto.
>     * config/i386/i386.h (TARGET_AVXVNNI, TARGET_AVXVNNI_P,
>     TARGET_AVXVNNI_P, PTA_AVXVNNI): New.
>     (PTA_SAPPHIRERAPIDS): Add AVX_VNNI.
>     (PTA_ALDERLAKE): Likewise.
>     * config/i386/i386.md ("isa"): Add avxvnni, avx512vnnivl.
>     ("enabled"): Adjust for avxvnni and avx512vnnivl.
>     * config/i386/i386.opt: Add option -mavxvnni.
>     * config/i386/immintrin.h: Include avxvnniintrin.h.
>     * config/i386/sse.md (vpdpbusd_<mode>): Adjust for AVXVNNI.
>     (vpdpbusds_<mode>): Likewise.
>     (vpdpwssd_<mode>): Likewise.
>     (vpdpwssds_<mode>): Likewise.
>     (vpdpbusd_v16si): New.
>     (vpdpbusds_v16si): Likewise.
>     (vpdpwssd_v16si): Likewise.
>     (vpdpwssds_v16si): Likewise.
>     * doc/invoke.texi: Document -mavxvnni.
>     * doc/extend.texi: Document avxvnni.
>     * doc/sourcebuild.texi: Document target avxvnni.
>
> gcc/testsuite/
>
>     * gcc.target/i386/avx512vl-vnni-1.c: Rename..
>     * gcc.target/i386/avx512vl-vnni-1a.c: To This.
>     * gcc.target/i386/avx512vl-vnni-1b.c: New test.
>     * gcc.target/i386/avx512vl-vnni-2.c: Ditto.
>     * gcc.target/i386/avx512vl-vnni-3.c: Ditto.
>     * gcc.target/i386/avx-vnni-1.c: Ditto.
>     * gcc.target/i386/avx-vnni-2.c: Ditto.
>     * gcc.target/i386/avx-vnni-3.c: Ditto.
>     * gcc.target/i386/avx-vnni-4.c: Ditto.
>     * gcc.target/i386/avx-vnni-5.c: Ditto.
>     * gcc.target/i386/avx-vnni-6.c: Ditto.
>     * gcc.target/i386/avx-vpdpbusd-2.c: Ditto.
>     * gcc.target/i386/avx-vpdpbusds-2.c: Ditto.
>     * gcc.target/i386/avx-vpdpwssd-2.c: Ditto.
>     * gcc.target/i386/avx-vpdpwssds-2.c: Ditto.
>     * gcc.target/i386/vnni_inline_error.c: Ditto.
>     * gcc.target/i386/avx512vnnivl-builtin.c: Ditto.
>     * gcc.target/i386/avxvnni-builtin.c: Ditto.
>     * gcc.target/i386/funcspec-56.inc: Add new target attribute.
>     * gcc.target/i386/pr83488-3.c: Adjust.
>     * gcc.target/i386/sse-12.c: Add -mavxvnni.
>     * gcc.target/i386/sse-13.c: Ditto.
>     * gcc.target/i386/sse-14.c: Ditto.
>     * gcc.target/i386/sse-22.c: Ditto.
>     * gcc.target/i386/sse-23.c: Ditto.
>     * g++.dg/other/i386-2.C: Ditto.
>     * g++.dg/other/i386-3.C: Ditto.
>     * lib/target-supports.exp (check_effective_target_avxvnni):
>     New proc.
>
> --
> Regards,
>
> Hongyu, Wang

Rebased on 2020-10-27 trunk and PING.
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