[PATCH] Enable GCC support for AMX

[Hongyu Wang]

Update for SAPPHIRERAPIDS and PING

Hongyu Wang <wwwhhhyyy333@gmail.com> 于2020年7月7日周二 上午11:24写道：

>
> Hi Kirill, could you help review this patch?
>
> Hongyu Wang <wwwhhhyyy333@gmail.com> 于2020年7月6日周一 上午9:58写道：
> >
> > Hi:
> >
> > This patch is about to support Intel Advanced Matrix Extensions (AMX)
> > which will be enabled in GLC.
> >
> > AMX is a new 64-bit programming paradigm consisting of two
> > compo nents: a set of 2-dimensional registers (tiles) representing
> > sub-arrays from a larger 2-dimensional memory image,
> > and an accelerator able to operate on tiles
> >
> > Supported instructions are
> >
> > AMX-TILE:ldtilecfg/sttilecfg/tileloadd/tileloaddt1/tilezero/tilerelease
> > AMX-INT8:tdpbssd/tdpbsud/tdpbusd/tdpbuud
> > AMX-BF16:tdpbf16ps
> >
> > The intrinsics adopts constant tile register number as its input parameters.
> >
> > For detailed information, please refer to
> > https://software.intel.com/content/dam/develop/public/us/en/documents/architecture-instruction-set-extensions-programming-reference.pdf
> >
> > Bootstrap ok, regression test on i386/x86 backend is ok.
> >
> > OK for master?
> >
> > gcc/ChangeLog
> >
> >     * common/config/i386/i386-common.c (OPTION_MASK_ISA2_AMX_TILE_SET,
> >     OPTION_MASK_ISA2_AMX_INT8_SET, OPTION_MASK_ISA2_AMX_BF16_SET,
> >     OPTION_MASK_ISA2_AMX_TILE_UNSET,
> >     OPTION_MASK_ISA2_AMX_INT8_UNSET, OPTION_MASK_ISA2_AMX_BF16_UNSET):
> >     New marcos.
> >     (ix86_handle_option): Hanlde -mamx-tile, -mamx-int8, -mamx-bf16.
> >     * common/config/i386/i386-cpuinfo.h (processor_types): Add
> >     FEATURE_AMX_TILE, FEATURE_AMX_INT8, FEATURE_AMX_BF16.
> >     * common/config/i386/cpuinfo.h (XSTATE_TILECFG,
> >     XSTATE_TILEDATA, XCR_AMX_ENABLED_MASK): New macro.
> >     (get_available_features): Enable AMX features only if
> >     their states are suoorited by OSXSAVE.
> >     * common/config/i386/i386-isas.h: Add ISA_NAME_TABLE_ENTRY
> >     for amx-tile, amx-int8, amx-bf16.
> >     * config.gcc: Add amxtileintrin.h, amxint8intrin.h,
> >     amxbf16intrin.h to extra headers.
> >     * config/i386/amxbf16intrin.h: New file.
> >     * config/i386/amxint8intrin.h: Ditto.
> >     * config/i386/amxtileintrin.h: Ditto.
> >     * config/i386/cpuid.h (bit_AMX_BF16, bit_AMX_TILE, bit_AMX_INT8):
> >     New macro.
> >     * config/i386/i386-c.c (ix86_target_macros_internal): Define
> >     __AMX_TILE__, __AMX_INT8__, AMX_BF16__.
> >     * config/i386/i386-options.c (ix86_target_string): Add
> >     -mamx-tile, -mamx-int8, -mamx-bf16.
> >     (ix86_option_override_internal): Handle AMX-TILE,
> >     AMX-INT8, AMX-BF16.
> >     * config/i386/i386.h (TARGET_AMX_TILE, TARGET_AMX_TILE_P,
> >     TARGET_AMX_INT8, TARGET_AMX_INT8_P, TARGET_AMX_BF16_P,
> >     PTA_AMX_TILE, PTA_AMX_INT8, PTA_AMX_BF16): New macros.
> >     * config/i386/i386.opt: Add -mamx-tile, -mamx-int8, -mamx-bf16.
> >     * config/i386/immintrin.h: Include amxtileintrin.h,
> >     amxint8intrin.h, amxbf16intrin.h.
> >     * doc/invoke.texi: Document -mamx-tile, -mamx-int8, -mamx-bf16.
> >     * doc/extend.texi: Document amx-tile, amx-int8, amx-bf16.
> >     * doc/sourcebuild.texi ((Effective-Target Keywords, Other
> >     hardware attributes): Document amx_int8, amx_tile, amx_bf16.
> >
> > gcc/testsuite/ChangeLog
> >
> >     * lib/target-supports.exp (check_effective_target_amx_tile,
> >     check_effective_target_amx_int8,
> >     check_effective_target_amx_bf16): New proc.
> >     * g++.dg/other/i386-2.C: Add -mamx-tile, -mamx-int8, -mamx-bf16.
> >     * g++.dg/other/i386-3.C: Ditto.
> >     * gcc.target/i386/sse-12.c: Ditto.
> >     * 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.
> >     * gcc.target/i386/funcspec-56.inc: Add new target attribute.
> >     * gcc.target/i386/amxbf16-asmatt-1.c: New test.
> >     * gcc.target/i386/amxint8-asmatt-1.c: Ditto.
> >     * gcc.target/i386/amxtile-asmatt-1.c: Ditto.
> >     * gcc.target/i386/amxbf16-asmintel-1.c: Ditto.
> >     * gcc.target/i386/amxint8-asmintel-1.c: Ditto.
> >     * gcc.target/i386/amxtile-asmintel-1.c: Ditto.
> >     * gcc.target/i386/amxbf16-asmatt-2.c: Ditto.
> >     * gcc.target/i386/amxint8-asmatt-2.c: Ditto.
> >     * gcc.target/i386/amxtile-asmatt-2.c: Ditto.
> >     * gcc.target/i386/amxbf16-asmintel-2.c: Ditto.
> >     * gcc.target/i386/amxint8-asmintel-2.c: Ditto.
> >     * gcc.target/i386/amxtile-asmintel-2.c: Ditto.
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