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cpu: add support for detecting cmpxchg16b

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Change-Id: I892de938e85205c0506aa82e31297b7a99e48e44
Reviewed-on: https://go-review.googlesource.com/c/sys/+/329450
Trust: Martin Möhrmann <martin@golang.org>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Martin Möhrmann <martin@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Martin Möhrmann <martin@golang.org>
This commit is contained in:
zhangyunhao
2021-08-23 07:06:55 +00:00
committed by Martin Möhrmann
parent 41cdb8703e
commit 63515b42dc
2 changed files with 3 additions and 0 deletions
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cpu/cpu.go
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@@ -56,6 +56,7 @@ var X86 struct {
HasAVX512BF16 bool // Advanced vector extension 512 BFloat16 Instructions
HasBMI1 bool // Bit manipulation instruction set 1
HasBMI2 bool // Bit manipulation instruction set 2
HasCX16 bool // Compare and exchange 16 Bytes
HasERMS bool // Enhanced REP for MOVSB and STOSB
HasFMA bool // Fused-multiply-add instructions
HasOSXSAVE bool // OS supports XSAVE/XRESTOR for saving/restoring XMM registers.