mirror of
https://github.com/octoleo/restic.git
synced 2024-12-30 13:40:36 +00:00
bff635bc5f
So, `dep` got an nice new feature to remove tests and non-go files from `vendor/`, and this brings the size of the vendor directory from ~300MiB down to ~20MiB. We don that now.
39 lines
1.7 KiB
Go
39 lines
1.7 KiB
Go
// Copyright 2018 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 for
|
|
// various CPU architectures.
|
|
package cpu
|
|
|
|
// CacheLinePad is used to pad structs to avoid false sharing.
|
|
type CacheLinePad struct{ _ [cacheLineSize]byte }
|
|
|
|
// X86 contains the supported CPU features of the
|
|
// current X86/AMD64 platform. If the current platform
|
|
// is not X86/AMD64 then all feature flags are false.
|
|
//
|
|
// X86 is padded to avoid false sharing. Further the HasAVX
|
|
// and HasAVX2 are only set if the OS supports XMM and YMM
|
|
// registers in addition to the CPUID feature bit being set.
|
|
var X86 struct {
|
|
_ CacheLinePad
|
|
HasAES bool // AES hardware implementation (AES NI)
|
|
HasADX bool // Multi-precision add-carry instruction extensions
|
|
HasAVX bool // Advanced vector extension
|
|
HasAVX2 bool // Advanced vector extension 2
|
|
HasBMI1 bool // Bit manipulation instruction set 1
|
|
HasBMI2 bool // Bit manipulation instruction set 2
|
|
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.
|
|
HasPCLMULQDQ bool // PCLMULQDQ instruction - most often used for AES-GCM
|
|
HasPOPCNT bool // Hamming weight instruction POPCNT.
|
|
HasSSE2 bool // Streaming SIMD extension 2 (always available on amd64)
|
|
HasSSE3 bool // Streaming SIMD extension 3
|
|
HasSSSE3 bool // Supplemental streaming SIMD extension 3
|
|
HasSSE41 bool // Streaming SIMD extension 4 and 4.1
|
|
HasSSE42 bool // Streaming SIMD extension 4 and 4.2
|
|
_ CacheLinePad
|
|
}
|