aboutsummaryrefslogtreecommitdiffhomepage
path: root/vendor/golang.org/x/sys/cpu/cpu.go
diff options
context:
space:
mode:
authorGravatar Frédéric Guillot <fred@miniflux.net>2018-07-06 21:18:14 -0700
committerGravatar Frédéric Guillot <fred@miniflux.net>2018-07-06 21:18:14 -0700
commit459bb4531f92f8663afb6f36aa9be5b789bd591f (patch)
treef14e6c06b8e5c63612d1ff36f8cab40ae8a99d20 /vendor/golang.org/x/sys/cpu/cpu.go
parent34a3fe426b33a63f2d8e02d4a70c88f137fa5410 (diff)
Update vendor dependencies
Diffstat (limited to 'vendor/golang.org/x/sys/cpu/cpu.go')
-rw-r--r--vendor/golang.org/x/sys/cpu/cpu.go38
1 files changed, 38 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/cpu/cpu.go b/vendor/golang.org/x/sys/cpu/cpu.go
new file mode 100644
index 0000000..3d88f86
--- /dev/null
+++ b/vendor/golang.org/x/sys/cpu/cpu.go
@@ -0,0 +1,38 @@
+// 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
+}