src/internal/cpu/cpu.go

// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package cpu implements processor feature detection
// used by the Go standard libary.
package cpu

var X86 x86

// The booleans in x86 contain the correspondingly named cpuid feature bit.
// HasAVX and HasAVX2 are only set if the OS does support XMM and YMM registers
// in addition to the cpuid feature bit being set.
// The struct is padded to avoid false sharing.
type x86 struct {
	_            [CacheLineSize]byte
	HasAES       bool
	HasAVX       bool
	HasAVX2      bool
	HasBMI1      bool
	HasBMI2      bool
	HasERMS      bool
	HasOSXSAVE   bool
	HasPCLMULQDQ bool
	HasPOPCNT    bool
	HasSSE2      bool
	HasSSE3      bool
	HasSSSE3     bool
	HasSSE41     bool
	HasSSE42     bool
	_            [CacheLineSize]byte
}