[PATCH] Enable GCC support for AMX
Hongyu Wang
wwwhhhyyy333@gmail.com
Mon Jul 6 01:58:00 GMT 2020
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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