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cpu: add support for amx detection

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Added detection for x86 AMX,
including AMX-Tile, AMX-INT8 and AMX-BF16
instruction sets.

Change-Id: Ib3d663430b64d46b46b22bdd05d40f1992e37ee0
GitHub-Last-Rev: 7986ed6d4f
GitHub-Pull-Request: golang/sys#170
Reviewed-on: https://go-review.googlesource.com/c/sys/+/516815
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
This commit is contained in:
Anton Kuklin
2023-08-10 12:32:18 +00:00
committed by Gopher Robot
parent 552c4e8192
commit eabbd5c036
2 changed files with 10 additions and 0 deletions
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3
cpu/cpu.go
View File

@@ -54,6 +54,9 @@ var X86 struct {
HasAVX512VBMI2 bool // Advanced vector extension 512 Vector Byte Manipulation Instructions 2
HasAVX512BITALG bool // Advanced vector extension 512 Bit Algorithms
HasAVX512BF16 bool // Advanced vector extension 512 BFloat16 Instructions
HasAMXTile bool // Advanced Matrix Extension Tile instructions
HasAMXInt8 bool // Advanced Matrix Extension Int8 instructions
HasAMXBF16 bool // Advanced Matrix Extension BFloat16 instructions
HasBMI1 bool // Bit manipulation instruction set 1
HasBMI2 bool // Bit manipulation instruction set 2
HasCX16 bool // Compare and exchange 16 Bytes

7
cpu/cpu_x86.go
View File

@@ -37,6 +37,9 @@ func initOptions() {
{Name: "avx512vbmi2", Feature: &X86.HasAVX512VBMI2},
{Name: "avx512bitalg", Feature: &X86.HasAVX512BITALG},
{Name: "avx512bf16", Feature: &X86.HasAVX512BF16},
{Name: "amxtile", Feature: &X86.HasAMXTile},
{Name: "amxint8", Feature: &X86.HasAMXInt8},
{Name: "amxbf16", Feature: &X86.HasAMXBF16},
{Name: "bmi1", Feature: &X86.HasBMI1},
{Name: "bmi2", Feature: &X86.HasBMI2},
{Name: "cx16", Feature: &X86.HasCX16},
@@ -138,6 +141,10 @@ func archInit() {
eax71, _, _, _ := cpuid(7, 1)
X86.HasAVX512BF16 = isSet(5, eax71)
}
X86.HasAMXTile = isSet(24, edx7)
X86.HasAMXInt8 = isSet(25, edx7)
X86.HasAMXBF16 = isSet(22, edx7)
}
func isSet(bitpos uint, value uint32) bool {