cpu: Remove pkg/cpu in favor of better klauspost/cpuid.

Fixes #1128
2016-02-15 12:45:02 -08:00 · 2016-02-15 12:45:02 -08:00 · 9e10ee7e47
parent a173313bc2
commit 9e10ee7e47
24 changed files with 2750 additions and 200 deletions
--- a/2
+++ b/2
@ -107,7 +107,7 @@ cyclo:
 	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/gocyclo -over 65 pkg

 build: getdeps verifiers $(UI_ASSETS) isa-l
-	@GO15VENDOREXPERIMENT=1 go generate ./...
+	@GO15VENDOREXPERIMENT=1 go generate github.com/minio/minio/pkg/crypto/sha1

 deadcode:
 	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/deadcode
--- a/README.md
+++ b/README.md
@ -2,10 +2,16 @@

 Minio is a distributed object storage server written in Golang. Source is available under free software / open source [Apache license 2.0](./LICENSE). API compatible with Amazon S3 cloud storage service.

+
 ## Description

 Micro services environment provisions one Minio server per application instance. Scalability is achieved through large number of smaller personalized instances. This version of the Minio binary is built using Filesystem storage backend for magnetic and solid state disks.

+Minio currently implements two backends
+
+  - Filesystem (FS) - is available and ready for general purpose use.
+  - ErasureCoded (XL) - is work in progress and not ready for general purpose use.
+
 ## Minio Client

 [Minio Client (mc)](https://github.com/minio/mc#minio-client-mc-) provides a modern alternative to Unix commands like ``ls``, ``cat``, ``cp``, ``sync``, and ``diff``. It supports POSIX compatible filesystems and Amazon S3 compatible cloud storage systems. It is entirely written in Golang.
--- a/appveyor.yml
+++ b/appveyor.yml
@ -40,7 +40,7 @@ build_script:
  - curl -fsSL -o ui-assets.asc  https://dl.minio.io/assets/server/ui/%UI_ASSETS_ARMOR%
  - gpg --batch --no-tty --yes --keyserver pgp.mit.edu --recv-keys F9AAC728
  - gpg --batch --no-tty --verify %UI_ASSETS_ARMOR% %UI_ASSETS%
-  - go generate ./...
+  - go generate github.com/minio/minio/pkg/crypto/sha1
  - go test .
  - go test -race .
  - go test github.com/minio/minio/pkg...
--- a/pkg/cpu/cpu_amd64.go
+++ b/pkg/cpu/cpu_amd64.go
@ -1,39 +0,0 @@
-/*
- * Minio Cloud Storage, (C) 2015 Minio, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package cpu
-
-// cpuid, cpuidex
-func cpuid(op uint32) (eax, ebx, ecx, edx uint32)
-func cpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
-
-// HasSSE41 - CPUID instruction verification wrapper for SSE41 extensions
-func HasSSE41() bool {
-	_, _, c, _ := cpuid(1)
-	return ((c & (1 << 19)) != 0)
-}
-
-// HasAVX - CPUID instruction verification wrapper for AVX extensions
-func HasAVX() bool {
-	_, _, c, _ := cpuid(1)
-	return ((c & (1 << 28)) != 0)
-}
-
-// HasAVX2 - CPUID instruction verification wrapper for AVX2 extensions
-func HasAVX2() bool {
-	_, b, _, _ := cpuidex(7, 0)
-	return ((b & (1 << 5)) != 0)
-}
--- a/pkg/cpu/cpu_amd64.s
+++ b/pkg/cpu/cpu_amd64.s
@ -1,27 +0,0 @@
-// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
-//
-// See https://github.com/klauspost/cpuid/blob/master/LICENSE
-//
-// Using this inside Minio with modifications
-//
-
-// func cpuid(op uint32) (eax, ebx, ecx, edx uint32)
-TEXT ·cpuid(SB),7,$0
-        MOVL op+0(FP),AX
-        CPUID
-        MOVL AX,eax+8(FP)
-        MOVL BX,ebx+12(FP)
-        MOVL CX,ecx+16(FP)
-        MOVL DX,edx+20(FP)
-        RET
-
-// func cpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
-TEXT ·cpuidex(SB),7,$0
-        MOVL op+0(FP),AX
-        MOVL op2+4(FP),CX
-        CPUID
-        MOVL AX,eax+8(FP)
-        MOVL BX,ebx+12(FP)
-        MOVL CX,ecx+16(FP)
-        MOVL DX,edx+20(FP)
-        RET
--- a/pkg/cpu/cpu_arm.go
+++ b/pkg/cpu/cpu_arm.go
@ -1,32 +0,0 @@
-/*
- * Minio Cloud Storage, (C) 2015 Minio, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package cpu
-
-// HasSSE41 - CPUID instruction verification wrapper for SSE41 extensions
-func HasSSE41() bool {
-	return false
-}
-
-// HasAVX - CPUID instruction verification wrapper for AVX extensions
-func HasAVX() bool {
-	return false
-}
-
-// HasAVX2 - CPUID instruction verification wrapper for AVX2 extensions
-func HasAVX2() bool {
-	return false
-}
--- a/pkg/cpu/cpu_test.go
+++ b/pkg/cpu/cpu_test.go
@ -1,76 +0,0 @@
-/*
- * Minio Cloud Storage, (C) 2015 Minio, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package cpu_test
-
-import (
-	"errors"
-	"os/exec"
-	"runtime"
-	"strings"
-	"testing"
-
-	"github.com/minio/minio/pkg/cpu"
-	. "gopkg.in/check.v1"
-)
-
-func Test(t *testing.T) { TestingT(t) }
-
-type MySuite struct{}
-
-var _ = Suite(&MySuite{})
-
-func hasCPUFeatureFromOS(feature string) (bool, error) {
-	if runtime.GOOS == "linux" {
-		command := exec.Command("/bin/cat", "/proc/cpuinfo")
-		output, err := command.Output()
-		if err != nil {
-			return false, err
-		}
-		if strings.Contains(string(output), feature) {
-			return true, nil
-		}
-		return false, nil
-	}
-	return false, errors.New("Not Implemented on this platform")
-}
-
-func (s *MySuite) TestHasSSE41(c *C) {
-	if runtime.GOOS == "linux" {
-		var flag = cpu.HasSSE41()
-		osCheck, err := hasCPUFeatureFromOS("sse4_1")
-		c.Assert(err, IsNil)
-		c.Check(flag, Equals, osCheck)
-	}
-}
-
-func (s *MySuite) TestHasAVX(c *C) {
-	if runtime.GOOS == "linux" {
-		var flag = cpu.HasAVX()
-		osFlag, err := hasCPUFeatureFromOS("avx")
-		c.Assert(err, IsNil)
-		c.Check(osFlag, Equals, flag)
-	}
-}
-
-func (s *MySuite) TestHasAVX2(c *C) {
-	if runtime.GOOS == "linux" {
-		var flag = cpu.HasAVX2()
-		osFlag, err := hasCPUFeatureFromOS("avx2")
-		c.Assert(err, IsNil)
-		c.Check(osFlag, Equals, flag)
-	}
-}
--- a/pkg/cpu/doc.go
+++ b/pkg/cpu/doc.go
@ -1,11 +0,0 @@
-// Package cpu provides wrapper around assembly functions for checking processor
-// instruction capabilities for SSE4.1, AVX, AVX2 support
-//
-// Example
-//
-// ``cpu.HasSSE41()`` returns true for SSE4.1 instruction support, false otherwise
-//
-// ``cpu.HasAVX()`` returns true for AVX instruction support, false otherwise
-//
-// ``cpu.HasAVX2()`` returns true for AVX2 instruction support, false otherwise
-package cpu
--- a/pkg/crypto/sha1/sha1block.go
+++ b/pkg/crypto/sha1/sha1block.go
@ -26,12 +26,12 @@ import "C"
 import (
 	"unsafe"

-	"github.com/minio/minio/pkg/cpu"
+	"github.com/klauspost/cpuid"
 )

 func block(dig *digest, p []byte) {
 	switch true {
-	case cpu.HasSSE41() == true:
+	case cpuid.CPU.SSE3():
 		blockSSE3(dig, p)
 	default:
 		blockGeneric(dig, p)
--- a/pkg/crypto/sha1/sha1block_linux.go
+++ b/pkg/crypto/sha1/sha1block_linux.go
@ -27,14 +27,14 @@ import "C"
 import (
 	"unsafe"

-	"github.com/minio/minio/pkg/cpu"
+	"github.com/klauspost/cpuid"
 )

 func block(dig *digest, p []byte) {
 	switch true {
-	case cpu.HasAVX2():
+	case cpuid.CPU.AVX2():
 		blockAVX2(dig, p)
-	case cpu.HasSSE41():
+	case cpuid.CPU.SSE3():
 		blockSSE3(dig, p)
 	default:
 		blockGeneric(dig, p)
--- a/pkg/crypto/sha256/sha256_linux.go
+++ b/pkg/crypto/sha256/sha256_linux.go
@ -31,7 +31,7 @@ package sha256
 import (
 	"hash"

-	"github.com/minio/minio/pkg/cpu"
+	"github.com/klauspost/cpuid"
 )

 // Size - The size of a SHA256 checksum in bytes.
@ -76,11 +76,11 @@ func (d *digest) Reset() {

 func block(dig *digest, p []byte) {
 	switch true {
-	case cpu.HasAVX2() == true:
+	case cpuid.CPU.AVX2():
 		blockAVX2(dig, p)
-	case cpu.HasAVX() == true:
+	case cpuid.CPU.AVX():
 		blockAVX(dig, p)
-	case cpu.HasSSE41() == true:
+	case cpuid.CPU.SSSE3():
 		blockSSE(dig, p)
 	default:
 		blockGeneric(dig, p)
--- a/pkg/crypto/sha512/sha512_linux.go
+++ b/pkg/crypto/sha512/sha512_linux.go
@ -16,7 +16,7 @@ package sha512
 import (
 	"hash"

-	"github.com/minio/minio/pkg/cpu"
+	"github.com/klauspost/cpuid"
 )

 // Size - The size of a SHA512 checksum in bytes.
@ -47,11 +47,11 @@ type digest struct {

 func block(dig *digest, p []byte) {
 	switch true {
-	case cpu.HasAVX2() == true:
+	case cpuid.CPU.AVX2():
 		blockAVX2(dig, p)
-	case cpu.HasAVX() == true:
+	case cpuid.CPU.AVX():
 		blockAVX(dig, p)
-	case cpu.HasSSE41() == true:
+	case cpuid.CPU.SSSE3():
 		blockSSE(dig, p)
 	default:
 		blockGeneric(dig, p)
--- a/vendor/github.com/klauspost/cpuid/LICENSE
+++ b/vendor/github.com/klauspost/cpuid/LICENSE
@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Klaus Post
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
--- a/vendor/github.com/klauspost/cpuid/README.md
+++ b/vendor/github.com/klauspost/cpuid/README.md
@ -0,0 +1,145 @@
+# cpuid
+Package cpuid provides information about the CPU running the current program.
+
+CPU features are detected on startup, and kept for fast access through the life of the application.
+Currently x86 / x64 (AMD64) is supported, and no external C (cgo) code is used, which should make the library very easy to use.
+
+You can access the CPU information by accessing the shared CPU variable of the cpuid library.
+
+Package home: https://github.com/klauspost/cpuid
+
+[![GoDoc][1]][2] [![Build Status][3]][4]
+
+[1]: https://godoc.org/github.com/klauspost/cpuid?status.svg
+[2]: https://godoc.org/github.com/klauspost/cpuid
+[3]: https://travis-ci.org/klauspost/cpuid.svg
+[4]: https://travis-ci.org/klauspost/cpuid
+
+# features
+## CPU Instructions
+*  **CMOV** (i686 CMOV)
+*  **NX** (NX (No-Execute) bit)
+*  **AMD3DNOW** (AMD 3DNOW)
+*  **AMD3DNOWEXT** (AMD 3DNowExt)
+*  **MMX** (standard MMX)
+*  **MMXEXT** (SSE integer functions or AMD MMX ext)
+*  **SSE** (SSE functions)
+*  **SSE2** (P4 SSE functions)
+*  **SSE3** (Prescott SSE3 functions)
+*  **SSSE3** (Conroe SSSE3 functions)
+*  **SSE4** (Penryn SSE4.1 functions)
+*  **SSE4A** (AMD Barcelona microarchitecture SSE4a instructions)
+*  **SSE42** (Nehalem SSE4.2 functions)
+*  **AVX** (AVX functions)
+*  **AVX2** (AVX2 functions)
+*  **FMA3** (Intel FMA 3)
+*  **FMA4** (Bulldozer FMA4 functions)
+*  **XOP** (Bulldozer XOP functions)
+*  **F16C** (Half-precision floating-point conversion)
+*  **BMI1** (Bit Manipulation Instruction Set 1)
+*  **BMI2** (Bit Manipulation Instruction Set 2)
+*  **TBM** (AMD Trailing Bit Manipulation)
+*  **LZCNT** (LZCNT instruction)
+*  **POPCNT** (POPCNT instruction)
+*  **AESNI** (Advanced Encryption Standard New Instructions)
+*  **CLMUL** (Carry-less Multiplication)
+*  **HTT** (Hyperthreading (enabled))
+*  **HLE** (Hardware Lock Elision)
+*  **RTM** (Restricted Transactional Memory)
+*  **RDRAND** (RDRAND instruction is available)
+*  **RDSEED** (RDSEED instruction is available)
+*  **ADX** (Intel ADX (Multi-Precision Add-Carry Instruction Extensions))
+*  **SHA** (Intel SHA Extensions)
+*  **AVX512F** (AVX-512 Foundation)
+*  **AVX512DQ** (AVX-512 Doubleword and Quadword Instructions)
+*  **AVX512IFMA** (AVX-512 Integer Fused Multiply-Add Instructions)
+*  **AVX512PF** (AVX-512 Prefetch Instructions)
+*  **AVX512ER** (AVX-512 Exponential and Reciprocal Instructions)
+*  **AVX512CD** (AVX-512 Conflict Detection Instructions)
+*  **AVX512BW** (AVX-512 Byte and Word Instructions)
+*  **AVX512VL** (AVX-512 Vector Length Extensions)
+*  **AVX512VBMI** (AVX-512 Vector Bit Manipulation Instructions)
+*  **MPX** (Intel MPX (Memory Protection Extensions))
+*  **ERMS** (Enhanced REP MOVSB/STOSB)
+*  **RDTSCP** (RDTSCP Instruction)
+*  **CX16** (CMPXCHG16B Instruction)
+*  **SGX** (Software Guard Extensions, with activation details)
+
+## Performance
+*  **RDTSCP()** Returns current cycle count. Can be used for benchmarking.
+*  **SSE2SLOW** (SSE2 is supported, but usually not faster)
+*  **SSE3SLOW** (SSE3 is supported, but usually not faster)
+*  **ATOM** (Atom processor, some SSSE3 instructions are slower)
+*  **Cache line** (Probable size of a cache line).
+*  **L1, L2, L3 Cache size** on newer Intel/AMD CPUs.
+
+## Cpu Vendor/VM
+* **Intel**
+* **AMD**
+* **VIA**
+* **Transmeta**
+* **NSC**
+* **KVM**  (Kernel-based Virtual Machine)
+* **MSVM** (Microsoft Hyper-V or Windows Virtual PC)
+* **VMware**
+* **XenHVM**
+
+# installing
+
+```go get github.com/klauspost/cpuid```
+
+# example
+
+```Go
+package main
+
+import (
+	"fmt"
+	"github.com/klauspost/cpuid"
+)
+
+func main() {
+	// Print basic CPU information:
+	fmt.Println("Name:", cpuid.CPU.BrandName)
+	fmt.Println("PhysicalCores:", cpuid.CPU.PhysicalCores)
+	fmt.Println("ThreadsPerCore:", cpuid.CPU.ThreadsPerCore)
+	fmt.Println("LogicalCores:", cpuid.CPU.LogicalCores)
+	fmt.Println("Family", cpuid.CPU.Family, "Model:", cpuid.CPU.Model)
+	fmt.Println("Features:", cpuid.CPU.Features)
+	fmt.Println("Cacheline bytes:", cpuid.CPU.CacheLine)
+	fmt.Println("L1 Data Cache:", cpuid.CPU.Cache.L1D, "bytes")
+	fmt.Println("L1 Instruction Cache:", cpuid.CPU.Cache.L1D, "bytes")
+	fmt.Println("L2 Cache:", cpuid.CPU.Cache.L2, "bytes")
+	fmt.Println("L3 Cache:", cpuid.CPU.Cache.L3, "bytes")
+
+	// Test if we have a specific feature:
+	if cpuid.CPU.SSE() {
+		fmt.Println("We have Streaming SIMD Extensions")
+	}
+}
+```
+
+Sample output:
+```
+>go run main.go
+Name: Intel(R) Core(TM) i5-2540M CPU @ 2.60GHz
+PhysicalCores: 2
+ThreadsPerCore: 2
+LogicalCores: 4
+Family 6 Model: 42
+Features: CMOV,MMX,MMXEXT,SSE,SSE2,SSE3,SSSE3,SSE4.1,SSE4.2,AVX,AESNI,CLMUL
+Cacheline bytes: 64
+We have Streaming SIMD Extensions
+```
+
+# private package
+
+In the "private" folder you can find an autogenerated version of the library you can include in your own packages.
+
+For this purpose all exports are removed, and functions and constants are lowercased.
+
+This is not a recommended way of using the library, but provided for convenience, if it is difficult for you to use external packages.
+
+# license
+
+This code is published under an MIT license. See LICENSE file for more information.
--- a/vendor/github.com/klauspost/cpuid/cpuid.go
+++ b/vendor/github.com/klauspost/cpuid/cpuid.go
--- a/vendor/github.com/klauspost/cpuid/cpuid_386.s
+++ b/vendor/github.com/klauspost/cpuid/cpuid_386.s
@ -0,0 +1,40 @@
+// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
+
+// func asmCpuid(op uint32) (eax, ebx, ecx, edx uint32)
+TEXT ·asmCpuid(SB), 7, $0
+	XORL CX, CX
+	MOVL op+0(FP), AX
+	CPUID
+	MOVL AX, eax+4(FP)
+	MOVL BX, ebx+8(FP)
+	MOVL CX, ecx+12(FP)
+	MOVL DX, edx+16(FP)
+	RET
+
+// func asmCpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
+TEXT ·asmCpuidex(SB), 7, $0
+	MOVL op+0(FP), AX
+	MOVL op2+4(FP), CX
+	CPUID
+	MOVL AX, eax+8(FP)
+	MOVL BX, ebx+12(FP)
+	MOVL CX, ecx+16(FP)
+	MOVL DX, edx+20(FP)
+	RET
+
+// func xgetbv(index uint32) (eax, edx uint32)
+TEXT ·asmXgetbv(SB), 7, $0
+	MOVL index+0(FP), CX
+	BYTE $0x0f; BYTE $0x01; BYTE $0xd0 // XGETBV
+	MOVL AX, eax+4(FP)
+	MOVL DX, edx+8(FP)
+	RET
+
+// func asmRdtscpAsm() (eax, ebx, ecx, edx uint32)
+TEXT ·asmRdtscpAsm(SB), 7, $0
+	BYTE $0x0F; BYTE $0x01; BYTE $0xF9 // RDTSCP
+	MOVL AX, eax+0(FP)
+	MOVL BX, ebx+4(FP)
+	MOVL CX, ecx+8(FP)
+	MOVL DX, edx+12(FP)
+	RET
--- a/vendor/github.com/klauspost/cpuid/cpuid_amd64.s
+++ b/vendor/github.com/klauspost/cpuid/cpuid_amd64.s
@ -0,0 +1,40 @@
+// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
+
+// func asmCpuid(op uint32) (eax, ebx, ecx, edx uint32)
+TEXT ·asmCpuid(SB), 7, $0
+	XORQ CX, CX
+	MOVL op+0(FP), AX
+	CPUID
+	MOVL AX, eax+8(FP)
+	MOVL BX, ebx+12(FP)
+	MOVL CX, ecx+16(FP)
+	MOVL DX, edx+20(FP)
+	RET
+
+// func asmCpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
+TEXT ·asmCpuidex(SB), 7, $0
+	MOVL op+0(FP), AX
+	MOVL op2+4(FP), CX
+	CPUID
+	MOVL AX, eax+8(FP)
+	MOVL BX, ebx+12(FP)
+	MOVL CX, ecx+16(FP)
+	MOVL DX, edx+20(FP)
+	RET
+
+// func asmXgetbv(index uint32) (eax, edx uint32)
+TEXT ·asmXgetbv(SB), 7, $0
+	MOVL index+0(FP), CX
+	BYTE $0x0f; BYTE $0x01; BYTE $0xd0 // XGETBV
+	MOVL AX, eax+8(FP)
+	MOVL DX, edx+12(FP)
+	RET
+
+// func asmRdtscpAsm() (eax, ebx, ecx, edx uint32)
+TEXT ·asmRdtscpAsm(SB), 7, $0
+	BYTE $0x0F; BYTE $0x01; BYTE $0xF9 // RDTSCP
+	MOVL AX, eax+0(FP)
+	MOVL BX, ebx+4(FP)
+	MOVL CX, ecx+8(FP)
+	MOVL DX, edx+12(FP)
+	RET
--- a/vendor/github.com/klauspost/cpuid/cpuid_test.go
+++ b/vendor/github.com/klauspost/cpuid/cpuid_test.go
@ -0,0 +1,727 @@
+// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
+
+package cpuid
+
+import (
+	"fmt"
+	"testing"
+)
+
+// There is no real way to test a CPU identifier, since results will
+// obviously differ on each machine.
+func TestCPUID(t *testing.T) {
+	n := maxFunctionID()
+	t.Logf("Max Function:0x%x\n", n)
+	n = maxExtendedFunction()
+	t.Logf("Max Extended Function:0x%x\n", n)
+	t.Log("Name:", CPU.BrandName)
+	t.Log("PhysicalCores:", CPU.PhysicalCores)
+	t.Log("ThreadsPerCore:", CPU.ThreadsPerCore)
+	t.Log("LogicalCores:", CPU.LogicalCores)
+	t.Log("Family", CPU.Family, "Model:", CPU.Model)
+	t.Log("Features:", CPU.Features)
+	t.Log("Cacheline bytes:", CPU.CacheLine)
+	t.Log("L1 Instruction Cache:", CPU.Cache.L1I, "bytes")
+	t.Log("L1 Data Cache:", CPU.Cache.L1D, "bytes")
+	t.Log("L2 Cache:", CPU.Cache.L2, "bytes")
+	t.Log("L3 Cache:", CPU.Cache.L3, "bytes")
+
+	if CPU.SSE2() {
+		t.Log("We have SSE2")
+	}
+}
+
+func TestDumpCPUID(t *testing.T) {
+	n := int(maxFunctionID())
+	for i := 0; i <= n; i++ {
+		a, b, c, d := cpuidex(uint32(i), 0)
+		t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a, b, c, d)
+		ex := uint32(1)
+		for {
+			a2, b2, c2, d2 := cpuidex(uint32(i), ex)
+			if a2 == a && b2 == b && d2 == d || ex > 50 || a2 == 0 {
+				break
+			}
+			t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a2, b2, c2, d2)
+			a, b, c, d = a2, b2, c2, d2
+			ex++
+		}
+	}
+	n2 := maxExtendedFunction()
+	for i := uint32(0x80000000); i <= n2; i++ {
+		a, b, c, d := cpuid(i)
+		t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a, b, c, d)
+	}
+}
+
+func Example() {
+	// Print basic CPU information:
+	fmt.Println("Name:", CPU.BrandName)
+	fmt.Println("PhysicalCores:", CPU.PhysicalCores)
+	fmt.Println("ThreadsPerCore:", CPU.ThreadsPerCore)
+	fmt.Println("LogicalCores:", CPU.LogicalCores)
+	fmt.Println("Family", CPU.Family, "Model:", CPU.Model)
+	fmt.Println("Features:", CPU.Features)
+	fmt.Println("Cacheline bytes:", CPU.CacheLine)
+
+	// Test if we have a specific feature:
+	if CPU.SSE() {
+		fmt.Println("We have Streaming SIMD Extensions")
+	}
+}
+
+func TestBrandNameZero(t *testing.T) {
+	if len(CPU.BrandName) > 0 {
+		// Cut out last byte
+		last := []byte(CPU.BrandName[len(CPU.BrandName)-1:])
+		if last[0] == 0 {
+			t.Fatal("last byte was zero")
+		} else if last[0] == 32 {
+			t.Fatal("whitespace wasn't trimmed")
+		}
+	}
+}
+
+// Generated here: http://play.golang.org/p/mko-0tFt0Q
+
+// TestCmov tests Cmov() function
+func TestCmov(t *testing.T) {
+	got := CPU.Cmov()
+	expected := CPU.Features&CMOV == CMOV
+	if got != expected {
+		t.Fatalf("Cmov: expected %v, got %v", expected, got)
+	}
+	t.Log("CMOV Support:", got)
+}
+
+// TestAmd3dnow tests Amd3dnow() function
+func TestAmd3dnow(t *testing.T) {
+	got := CPU.Amd3dnow()
+	expected := CPU.Features&AMD3DNOW == AMD3DNOW
+	if got != expected {
+		t.Fatalf("Amd3dnow: expected %v, got %v", expected, got)
+	}
+	t.Log("AMD3DNOW Support:", got)
+}
+
+// TestAmd3dnowExt tests Amd3dnowExt() function
+func TestAmd3dnowExt(t *testing.T) {
+	got := CPU.Amd3dnowExt()
+	expected := CPU.Features&AMD3DNOWEXT == AMD3DNOWEXT
+	if got != expected {
+		t.Fatalf("Amd3dnowExt: expected %v, got %v", expected, got)
+	}
+	t.Log("AMD3DNOWEXT Support:", got)
+}
+
+// TestMMX tests MMX() function
+func TestMMX(t *testing.T) {
+	got := CPU.MMX()
+	expected := CPU.Features&MMX == MMX
+	if got != expected {
+		t.Fatalf("MMX: expected %v, got %v", expected, got)
+	}
+	t.Log("MMX Support:", got)
+}
+
+// TestMMXext tests MMXext() function
+func TestMMXext(t *testing.T) {
+	got := CPU.MMXExt()
+	expected := CPU.Features&MMXEXT == MMXEXT
+	if got != expected {
+		t.Fatalf("MMXExt: expected %v, got %v", expected, got)
+	}
+	t.Log("MMXEXT Support:", got)
+}
+
+// TestSSE tests SSE() function
+func TestSSE(t *testing.T) {
+	got := CPU.SSE()
+	expected := CPU.Features&SSE == SSE
+	if got != expected {
+		t.Fatalf("SSE: expected %v, got %v", expected, got)
+	}
+	t.Log("SSE Support:", got)
+}
+
+// TestSSE2 tests SSE2() function
+func TestSSE2(t *testing.T) {
+	got := CPU.SSE2()
+	expected := CPU.Features&SSE2 == SSE2
+	if got != expected {
+		t.Fatalf("SSE2: expected %v, got %v", expected, got)
+	}
+	t.Log("SSE2 Support:", got)
+}
+
+// TestSSE3 tests SSE3() function
+func TestSSE3(t *testing.T) {
+	got := CPU.SSE3()
+	expected := CPU.Features&SSE3 == SSE3
+	if got != expected {
+		t.Fatalf("SSE3: expected %v, got %v", expected, got)
+	}
+	t.Log("SSE3 Support:", got)
+}
+
+// TestSSSE3 tests SSSE3() function
+func TestSSSE3(t *testing.T) {
+	got := CPU.SSSE3()
+	expected := CPU.Features&SSSE3 == SSSE3
+	if got != expected {
+		t.Fatalf("SSSE3: expected %v, got %v", expected, got)
+	}
+	t.Log("SSSE3 Support:", got)
+}
+
+// TestSSE4 tests SSE4() function
+func TestSSE4(t *testing.T) {
+	got := CPU.SSE4()
+	expected := CPU.Features&SSE4 == SSE4
+	if got != expected {
+		t.Fatalf("SSE4: expected %v, got %v", expected, got)
+	}
+	t.Log("SSE4 Support:", got)
+}
+
+// TestSSE42 tests SSE42() function
+func TestSSE42(t *testing.T) {
+	got := CPU.SSE42()
+	expected := CPU.Features&SSE42 == SSE42
+	if got != expected {
+		t.Fatalf("SSE42: expected %v, got %v", expected, got)
+	}
+	t.Log("SSE42 Support:", got)
+}
+
+// TestAVX tests AVX() function
+func TestAVX(t *testing.T) {
+	got := CPU.AVX()
+	expected := CPU.Features&AVX == AVX
+	if got != expected {
+		t.Fatalf("AVX: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX Support:", got)
+}
+
+// TestAVX2 tests AVX2() function
+func TestAVX2(t *testing.T) {
+	got := CPU.AVX2()
+	expected := CPU.Features&AVX2 == AVX2
+	if got != expected {
+		t.Fatalf("AVX2: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX2 Support:", got)
+}
+
+// TestFMA3 tests FMA3() function
+func TestFMA3(t *testing.T) {
+	got := CPU.FMA3()
+	expected := CPU.Features&FMA3 == FMA3
+	if got != expected {
+		t.Fatalf("FMA3: expected %v, got %v", expected, got)
+	}
+	t.Log("FMA3 Support:", got)
+}
+
+// TestFMA4 tests FMA4() function
+func TestFMA4(t *testing.T) {
+	got := CPU.FMA4()
+	expected := CPU.Features&FMA4 == FMA4
+	if got != expected {
+		t.Fatalf("FMA4: expected %v, got %v", expected, got)
+	}
+	t.Log("FMA4 Support:", got)
+}
+
+// TestXOP tests XOP() function
+func TestXOP(t *testing.T) {
+	got := CPU.XOP()
+	expected := CPU.Features&XOP == XOP
+	if got != expected {
+		t.Fatalf("XOP: expected %v, got %v", expected, got)
+	}
+	t.Log("XOP Support:", got)
+}
+
+// TestF16C tests F16C() function
+func TestF16C(t *testing.T) {
+	got := CPU.F16C()
+	expected := CPU.Features&F16C == F16C
+	if got != expected {
+		t.Fatalf("F16C: expected %v, got %v", expected, got)
+	}
+	t.Log("F16C Support:", got)
+}
+
+// TestCX16 tests CX16() function
+func TestCX16(t *testing.T) {
+	got := CPU.CX16()
+	expected := CPU.Features&CX16 == CX16
+	if got != expected {
+		t.Fatalf("CX16: expected %v, got %v", expected, got)
+	}
+	t.Log("CX16 Support:", got)
+}
+
+// TestSGX tests SGX() function
+func TestSGX(t *testing.T) {
+	got := CPU.SGX.Available
+	expected := CPU.Features&SGX == SGX
+	if got != expected {
+		t.Fatalf("SGX: expected %v, got %v", expected, got)
+	}
+	t.Log("SGX Support:", got)
+}
+
+// TestBMI1 tests BMI1() function
+func TestBMI1(t *testing.T) {
+	got := CPU.BMI1()
+	expected := CPU.Features&BMI1 == BMI1
+	if got != expected {
+		t.Fatalf("BMI1: expected %v, got %v", expected, got)
+	}
+	t.Log("BMI1 Support:", got)
+}
+
+// TestBMI2 tests BMI2() function
+func TestBMI2(t *testing.T) {
+	got := CPU.BMI2()
+	expected := CPU.Features&BMI2 == BMI2
+	if got != expected {
+		t.Fatalf("BMI2: expected %v, got %v", expected, got)
+	}
+	t.Log("BMI2 Support:", got)
+}
+
+// TestTBM tests TBM() function
+func TestTBM(t *testing.T) {
+	got := CPU.TBM()
+	expected := CPU.Features&TBM == TBM
+	if got != expected {
+		t.Fatalf("TBM: expected %v, got %v", expected, got)
+	}
+	t.Log("TBM Support:", got)
+}
+
+// TestLzcnt tests Lzcnt() function
+func TestLzcnt(t *testing.T) {
+	got := CPU.Lzcnt()
+	expected := CPU.Features&LZCNT == LZCNT
+	if got != expected {
+		t.Fatalf("Lzcnt: expected %v, got %v", expected, got)
+	}
+	t.Log("LZCNT Support:", got)
+}
+
+// TestLzcnt tests Lzcnt() function
+func TestPopcnt(t *testing.T) {
+	got := CPU.Popcnt()
+	expected := CPU.Features&POPCNT == POPCNT
+	if got != expected {
+		t.Fatalf("Popcnt: expected %v, got %v", expected, got)
+	}
+	t.Log("POPCNT Support:", got)
+}
+
+// TestAesNi tests AesNi() function
+func TestAesNi(t *testing.T) {
+	got := CPU.AesNi()
+	expected := CPU.Features&AESNI == AESNI
+	if got != expected {
+		t.Fatalf("AesNi: expected %v, got %v", expected, got)
+	}
+	t.Log("AESNI Support:", got)
+}
+
+// TestHTT tests HTT() function
+func TestHTT(t *testing.T) {
+	got := CPU.HTT()
+	expected := CPU.Features&HTT == HTT
+	if got != expected {
+		t.Fatalf("HTT: expected %v, got %v", expected, got)
+	}
+	t.Log("HTT Support:", got)
+}
+
+// TestClmul tests Clmul() function
+func TestClmul(t *testing.T) {
+	got := CPU.Clmul()
+	expected := CPU.Features&CLMUL == CLMUL
+	if got != expected {
+		t.Fatalf("Clmul: expected %v, got %v", expected, got)
+	}
+	t.Log("CLMUL Support:", got)
+}
+
+// TestSSE2Slow tests SSE2Slow() function
+func TestSSE2Slow(t *testing.T) {
+	got := CPU.SSE2Slow()
+	expected := CPU.Features&SSE2SLOW == SSE2SLOW
+	if got != expected {
+		t.Fatalf("SSE2Slow: expected %v, got %v", expected, got)
+	}
+	t.Log("SSE2SLOW Support:", got)
+}
+
+// TestSSE3Slow tests SSE3slow() function
+func TestSSE3Slow(t *testing.T) {
+	got := CPU.SSE3Slow()
+	expected := CPU.Features&SSE3SLOW == SSE3SLOW
+	if got != expected {
+		t.Fatalf("SSE3slow: expected %v, got %v", expected, got)
+	}
+	t.Log("SSE3SLOW Support:", got)
+}
+
+// TestAtom tests Atom() function
+func TestAtom(t *testing.T) {
+	got := CPU.Atom()
+	expected := CPU.Features&ATOM == ATOM
+	if got != expected {
+		t.Fatalf("Atom: expected %v, got %v", expected, got)
+	}
+	t.Log("ATOM Support:", got)
+}
+
+// TestNX tests NX() function (NX (No-Execute) bit)
+func TestNX(t *testing.T) {
+	got := CPU.NX()
+	expected := CPU.Features&NX == NX
+	if got != expected {
+		t.Fatalf("NX: expected %v, got %v", expected, got)
+	}
+	t.Log("NX Support:", got)
+}
+
+// TestSSE4A tests SSE4A() function (AMD Barcelona microarchitecture SSE4a instructions)
+func TestSSE4A(t *testing.T) {
+	got := CPU.SSE4A()
+	expected := CPU.Features&SSE4A == SSE4A
+	if got != expected {
+		t.Fatalf("SSE4A: expected %v, got %v", expected, got)
+	}
+	t.Log("SSE4A Support:", got)
+}
+
+// TestHLE tests HLE() function (Hardware Lock Elision)
+func TestHLE(t *testing.T) {
+	got := CPU.HLE()
+	expected := CPU.Features&HLE == HLE
+	if got != expected {
+		t.Fatalf("HLE: expected %v, got %v", expected, got)
+	}
+	t.Log("HLE Support:", got)
+}
+
+// TestRTM tests RTM() function (Restricted Transactional Memory)
+func TestRTM(t *testing.T) {
+	got := CPU.RTM()
+	expected := CPU.Features&RTM == RTM
+	if got != expected {
+		t.Fatalf("RTM: expected %v, got %v", expected, got)
+	}
+	t.Log("RTM Support:", got)
+}
+
+// TestRdrand tests RDRAND() function (RDRAND instruction is available)
+func TestRdrand(t *testing.T) {
+	got := CPU.Rdrand()
+	expected := CPU.Features&RDRAND == RDRAND
+	if got != expected {
+		t.Fatalf("Rdrand: expected %v, got %v", expected, got)
+	}
+	t.Log("Rdrand Support:", got)
+}
+
+// TestRdseed tests RDSEED() function (RDSEED instruction is available)
+func TestRdseed(t *testing.T) {
+	got := CPU.Rdseed()
+	expected := CPU.Features&RDSEED == RDSEED
+	if got != expected {
+		t.Fatalf("Rdseed: expected %v, got %v", expected, got)
+	}
+	t.Log("Rdseed Support:", got)
+}
+
+// TestADX tests ADX() function (Intel ADX (Multi-Precision Add-Carry Instruction Extensions))
+func TestADX(t *testing.T) {
+	got := CPU.ADX()
+	expected := CPU.Features&ADX == ADX
+	if got != expected {
+		t.Fatalf("ADX: expected %v, got %v", expected, got)
+	}
+	t.Log("ADX Support:", got)
+}
+
+// TestSHA tests SHA() function (Intel SHA Extensions)
+func TestSHA(t *testing.T) {
+	got := CPU.SHA()
+	expected := CPU.Features&SHA == SHA
+	if got != expected {
+		t.Fatalf("SHA: expected %v, got %v", expected, got)
+	}
+	t.Log("SHA Support:", got)
+}
+
+// TestAVX512F tests AVX512F() function (AVX-512 Foundation)
+func TestAVX512F(t *testing.T) {
+	got := CPU.AVX512F()
+	expected := CPU.Features&AVX512F == AVX512F
+	if got != expected {
+		t.Fatalf("AVX512F: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX512F Support:", got)
+}
+
+// TestAVX512DQ tests AVX512DQ() function (AVX-512 Doubleword and Quadword Instructions)
+func TestAVX512DQ(t *testing.T) {
+	got := CPU.AVX512DQ()
+	expected := CPU.Features&AVX512DQ == AVX512DQ
+	if got != expected {
+		t.Fatalf("AVX512DQ: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX512DQ Support:", got)
+}
+
+// TestAVX512IFMA tests AVX512IFMA() function (AVX-512 Integer Fused Multiply-Add Instructions)
+func TestAVX512IFMA(t *testing.T) {
+	got := CPU.AVX512IFMA()
+	expected := CPU.Features&AVX512IFMA == AVX512IFMA
+	if got != expected {
+		t.Fatalf("AVX512IFMA: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX512IFMA Support:", got)
+}
+
+// TestAVX512PF tests AVX512PF() function (AVX-512 Prefetch Instructions)
+func TestAVX512PF(t *testing.T) {
+	got := CPU.AVX512PF()
+	expected := CPU.Features&AVX512PF == AVX512PF
+	if got != expected {
+		t.Fatalf("AVX512PF: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX512PF Support:", got)
+}
+
+// TestAVX512ER tests AVX512ER() function (AVX-512 Exponential and Reciprocal Instructions)
+func TestAVX512ER(t *testing.T) {
+	got := CPU.AVX512ER()
+	expected := CPU.Features&AVX512ER == AVX512ER
+	if got != expected {
+		t.Fatalf("AVX512ER: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX512ER Support:", got)
+}
+
+// TestAVX512CD tests AVX512CD() function (AVX-512 Conflict Detection Instructions)
+func TestAVX512CD(t *testing.T) {
+	got := CPU.AVX512CD()
+	expected := CPU.Features&AVX512CD == AVX512CD
+	if got != expected {
+		t.Fatalf("AVX512CD: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX512CD Support:", got)
+}
+
+// TestAVX512BW tests AVX512BW() function (AVX-512 Byte and Word Instructions)
+func TestAVX512BW(t *testing.T) {
+	got := CPU.AVX512BW()
+	expected := CPU.Features&AVX512BW == AVX512BW
+	if got != expected {
+		t.Fatalf("AVX512BW: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX512BW Support:", got)
+}
+
+// TestAVX512VL tests AVX512VL() function (AVX-512 Vector Length Extensions)
+func TestAVX512VL(t *testing.T) {
+	got := CPU.AVX512VL()
+	expected := CPU.Features&AVX512VL == AVX512VL
+	if got != expected {
+		t.Fatalf("AVX512VL: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX512VL Support:", got)
+}
+
+// TestAVX512VL tests AVX512VBMI() function (AVX-512 Vector Bit Manipulation Instructions)
+func TestAVX512VBMI(t *testing.T) {
+	got := CPU.AVX512VBMI()
+	expected := CPU.Features&AVX512VBMI == AVX512VBMI
+	if got != expected {
+		t.Fatalf("AVX512VBMI: expected %v, got %v", expected, got)
+	}
+	t.Log("AVX512VBMI Support:", got)
+}
+
+// TestMPX tests MPX() function (Intel MPX (Memory Protection Extensions))
+func TestMPX(t *testing.T) {
+	got := CPU.MPX()
+	expected := CPU.Features&MPX == MPX
+	if got != expected {
+		t.Fatalf("MPX: expected %v, got %v", expected, got)
+	}
+	t.Log("MPX Support:", got)
+}
+
+// TestERMS tests ERMS() function (Enhanced REP MOVSB/STOSB)
+func TestERMS(t *testing.T) {
+	got := CPU.ERMS()
+	expected := CPU.Features&ERMS == ERMS
+	if got != expected {
+		t.Fatalf("ERMS: expected %v, got %v", expected, got)
+	}
+	t.Log("ERMS Support:", got)
+}
+
+// TestVendor writes the detected vendor. Will be 0 if unknown
+func TestVendor(t *testing.T) {
+	t.Log("Vendor ID:", CPU.VendorID)
+}
+
+// Intel returns true if vendor is recognized as Intel
+func TestIntel(t *testing.T) {
+	got := CPU.Intel()
+	expected := CPU.VendorID == Intel
+	if got != expected {
+		t.Fatalf("TestIntel: expected %v, got %v", expected, got)
+	}
+	t.Log("TestIntel:", got)
+}
+
+// AMD returns true if vendor is recognized as AMD
+func TestAMD(t *testing.T) {
+	got := CPU.AMD()
+	expected := CPU.VendorID == AMD
+	if got != expected {
+		t.Fatalf("TestAMD: expected %v, got %v", expected, got)
+	}
+	t.Log("TestAMD:", got)
+}
+
+// Transmeta returns true if vendor is recognized as Transmeta
+func TestTransmeta(t *testing.T) {
+	got := CPU.Transmeta()
+	expected := CPU.VendorID == Transmeta
+	if got != expected {
+		t.Fatalf("TestTransmeta: expected %v, got %v", expected, got)
+	}
+	t.Log("TestTransmeta:", got)
+}
+
+// NSC returns true if vendor is recognized as National Semiconductor
+func TestNSC(t *testing.T) {
+	got := CPU.NSC()
+	expected := CPU.VendorID == NSC
+	if got != expected {
+		t.Fatalf("TestNSC: expected %v, got %v", expected, got)
+	}
+	t.Log("TestNSC:", got)
+}
+
+// VIA returns true if vendor is recognized as VIA
+func TestVIA(t *testing.T) {
+	got := CPU.VIA()
+	expected := CPU.VendorID == VIA
+	if got != expected {
+		t.Fatalf("TestVIA: expected %v, got %v", expected, got)
+	}
+	t.Log("TestVIA:", got)
+}
+
+// Test VM function
+func TestVM(t *testing.T) {
+	t.Log("Vendor ID:", CPU.VM())
+}
+
+// Test RTCounter function
+func TestRtCounter(t *testing.T) {
+	a := CPU.RTCounter()
+	b := CPU.RTCounter()
+	t.Log("CPU Counter:", a, b, b-a)
+}
+
+// Prints the value of Ia32TscAux()
+func TestIa32TscAux(t *testing.T) {
+	ecx := CPU.Ia32TscAux()
+	t.Logf("Ia32TscAux:0x%x\n", ecx)
+	if ecx != 0 {
+		chip := (ecx & 0xFFF000) >> 12
+		core := ecx & 0xFFF
+		t.Log("Likely chip, core:", chip, core)
+	}
+}
+
+func TestThreadsPerCoreNZ(t *testing.T) {
+	if CPU.ThreadsPerCore == 0 {
+		t.Fatal("threads per core is zero")
+	}
+}
+
+// Prints the value of LogicalCPU()
+func TestLogicalCPU(t *testing.T) {
+	t.Log("Currently executing on cpu:", CPU.LogicalCPU())
+}
+
+func TestMaxFunction(t *testing.T) {
+	expect := maxFunctionID()
+	if CPU.maxFunc != expect {
+		t.Fatal("Max function does not match, expected", expect, "but got", CPU.maxFunc)
+	}
+	expect = maxExtendedFunction()
+	if CPU.maxExFunc != expect {
+		t.Fatal("Max Extended function does not match, expected", expect, "but got", CPU.maxFunc)
+	}
+}
+
+// This example will calculate the chip/core number on Linux
+// Linux encodes numa id (<<12) and core id (8bit) into TSC_AUX.
+func ExampleCPUInfo_Ia32TscAux(t *testing.T) {
+	ecx := CPU.Ia32TscAux()
+	if ecx == 0 {
+		fmt.Println("Unknown CPU ID")
+		return
+	}
+	chip := (ecx & 0xFFF000) >> 12
+	core := ecx & 0xFFF
+	fmt.Println("Chip, Core:", chip, core)
+}
+
+/*
+func TestPhysical(t *testing.T) {
+	var test16 = "CPUID 00000000: 0000000d-756e6547-6c65746e-49656e69 \nCPUID 00000001: 000206d7-03200800-1fbee3ff-bfebfbff   \nCPUID 00000002: 76035a01-00f0b2ff-00000000-00ca0000   \nCPUID 00000003: 00000000-00000000-00000000-00000000   \nCPUID 00000004: 3c004121-01c0003f-0000003f-00000000   \nCPUID 00000004: 3c004122-01c0003f-0000003f-00000000   \nCPUID 00000004: 3c004143-01c0003f-000001ff-00000000   \nCPUID 00000004: 3c07c163-04c0003f-00003fff-00000006   \nCPUID 00000005: 00000040-00000040-00000003-00021120   \nCPUID 00000006: 00000075-00000002-00000009-00000000   \nCPUID 00000007: 00000000-00000000-00000000-00000000   \nCPUID 00000008: 00000000-00000000-00000000-00000000   \nCPUID 00000009: 00000001-00000000-00000000-00000000   \nCPUID 0000000a: 07300403-00000000-00000000-00000603   \nCPUID 0000000b: 00000000-00000000-00000003-00000003   \nCPUID 0000000b: 00000005-00000010-00000201-00000003   \nCPUID 0000000c: 00000000-00000000-00000000-00000000   \nCPUID 0000000d: 00000007-00000340-00000340-00000000   \nCPUID 0000000d: 00000001-00000000-00000000-00000000   \nCPUID 0000000d: 00000100-00000240-00000000-00000000   \nCPUID 80000000: 80000008-00000000-00000000-00000000   \nCPUID 80000001: 00000000-00000000-00000001-2c100800   \nCPUID 80000002: 20202020-49202020-6c65746e-20295228   \nCPUID 80000003: 6e6f6558-20295228-20555043-322d3545   \nCPUID 80000004: 20303636-20402030-30322e32-007a4847   \nCPUID 80000005: 00000000-00000000-00000000-00000000   \nCPUID 80000006: 00000000-00000000-01006040-00000000   \nCPUID 80000007: 00000000-00000000-00000000-00000100   \nCPUID 80000008: 0000302e-00000000-00000000-00000000"
+	restore := mockCPU([]byte(test16))
+	Detect()
+	t.Log("Name:", CPU.BrandName)
+	n := maxFunctionID()
+	t.Logf("Max Function:0x%x\n", n)
+	n = maxExtendedFunction()
+	t.Logf("Max Extended Function:0x%x\n", n)
+	t.Log("PhysicalCores:", CPU.PhysicalCores)
+	t.Log("ThreadsPerCore:", CPU.ThreadsPerCore)
+	t.Log("LogicalCores:", CPU.LogicalCores)
+	t.Log("Family", CPU.Family, "Model:", CPU.Model)
+	t.Log("Features:", CPU.Features)
+	t.Log("Cacheline bytes:", CPU.CacheLine)
+	t.Log("L1 Instruction Cache:", CPU.Cache.L1I, "bytes")
+	t.Log("L1 Data Cache:", CPU.Cache.L1D, "bytes")
+	t.Log("L2 Cache:", CPU.Cache.L2, "bytes")
+	t.Log("L3 Cache:", CPU.Cache.L3, "bytes")
+	if CPU.LogicalCores > 0 && CPU.PhysicalCores > 0 {
+		if CPU.LogicalCores != CPU.PhysicalCores*CPU.ThreadsPerCore {
+			t.Fatalf("Core count mismatch, LogicalCores (%d) != PhysicalCores (%d) * CPU.ThreadsPerCore (%d)",
+				CPU.LogicalCores, CPU.PhysicalCores, CPU.ThreadsPerCore)
+		}
+	}
+
+	if CPU.ThreadsPerCore > 1 && !CPU.HTT() {
+		t.Fatalf("Hyperthreading not detected")
+	}
+	if CPU.ThreadsPerCore == 1 && CPU.HTT() {
+		t.Fatalf("Hyperthreading detected, but only 1 Thread per core")
+	}
+	restore()
+	Detect()
+	TestCPUID(t)
+}
+*/
--- a/vendor/github.com/klauspost/cpuid/detect_intel.go
+++ b/vendor/github.com/klauspost/cpuid/detect_intel.go
@ -0,0 +1,17 @@
+// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
+
+// +build 386 amd64
+
+package cpuid
+
+func asmCpuid(op uint32) (eax, ebx, ecx, edx uint32)
+func asmCpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
+func asmXgetbv(index uint32) (eax, edx uint32)
+func asmRdtscpAsm() (eax, ebx, ecx, edx uint32)
+
+func initCPU() {
+	cpuid = asmCpuid
+	cpuidex = asmCpuidex
+	xgetbv = asmXgetbv
+	rdtscpAsm = asmRdtscpAsm
+}
--- a/vendor/github.com/klauspost/cpuid/detect_ref.go
+++ b/vendor/github.com/klauspost/cpuid/detect_ref.go
@ -0,0 +1,23 @@
+// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
+
+// +build !amd64,!386
+
+package cpuid
+
+func initCPU() {
+	cpuid = func(op uint32) (eax, ebx, ecx, edx uint32) {
+		return 0, 0, 0, 0
+	}
+
+	cpuidex = func(op, op2 uint32) (eax, ebx, ecx, edx uint32) {
+		return 0, 0, 0, 0
+	}
+
+	xgetbv = func(index uint32) (eax, edx uint32) {
+		return 0, 0
+	}
+
+	rdtscpAsm = func() (eax, ebx, ecx, edx uint32) {
+		return 0, 0, 0, 0
+	}
+}
--- a/vendor/github.com/klauspost/cpuid/generate.go
+++ b/vendor/github.com/klauspost/cpuid/generate.go
@ -0,0 +1,3 @@
+package cpuid
+
+//go:generate go run private-gen.go
--- a/vendor/github.com/klauspost/cpuid/mockcpu_test.go
+++ b/vendor/github.com/klauspost/cpuid/mockcpu_test.go
@ -0,0 +1,209 @@
+package cpuid
+
+import (
+	"archive/zip"
+	"fmt"
+	"io/ioutil"
+	"sort"
+	"strings"
+	"testing"
+)
+
+type fakecpuid map[uint32][][]uint32
+
+type idfuncs struct {
+	cpuid   func(op uint32) (eax, ebx, ecx, edx uint32)
+	cpuidex func(op, op2 uint32) (eax, ebx, ecx, edx uint32)
+	xgetbv  func(index uint32) (eax, edx uint32)
+}
+
+func (f fakecpuid) String() string {
+	var out = make([]string, 0, len(f))
+	for key, val := range f {
+		for _, v := range val {
+			out = append(out, fmt.Sprintf("CPUID %08x: [%08x, %08x, %08x, %08x]", key, v[0], v[1], v[2], v[3]))
+		}
+	}
+	sorter := sort.StringSlice(out)
+	sort.Sort(&sorter)
+	return strings.Join(sorter, "\n")
+}
+
+func mockCPU(def []byte) func() {
+	lines := strings.Split(string(def), "\n")
+	anyfound := false
+	fakeID := make(fakecpuid)
+	for _, line := range lines {
+		line = strings.Trim(line, "\r\t ")
+		if !strings.HasPrefix(line, "CPUID") {
+			continue
+		}
+		// Only collect for first cpu
+		if strings.HasPrefix(line, "CPUID 00000000") {
+			if anyfound {
+				break
+			}
+		}
+		if !strings.Contains(line, "-") {
+			//continue
+		}
+		items := strings.Split(line, ":")
+		if len(items) < 2 {
+			if len(line) == 51 || len(line) == 50 {
+				items = []string{line[0:14], line[15:]}
+			} else {
+				items = strings.Split(line, "\t")
+				if len(items) != 2 {
+					//fmt.Println("not found:", line, "len:", len(line))
+					continue
+				}
+			}
+		}
+		items = items[0:2]
+		vals := strings.Trim(items[1], "\r\n ")
+
+		var idV uint32
+		n, err := fmt.Sscanf(items[0], "CPUID %x", &idV)
+		if err != nil || n != 1 {
+			continue
+		}
+		existing, ok := fakeID[idV]
+		if !ok {
+			existing = make([][]uint32, 0)
+		}
+
+		values := make([]uint32, 4)
+		n, err = fmt.Sscanf(vals, "%x-%x-%x-%x", &values[0], &values[1], &values[2], &values[3])
+		if n != 4 || err != nil {
+			n, err = fmt.Sscanf(vals, "%x %x %x %x", &values[0], &values[1], &values[2], &values[3])
+			if n != 4 || err != nil {
+				//fmt.Println("scanned", vals, "got", n, "Err:", err)
+				continue
+			}
+		}
+
+		existing = append(existing, values)
+		fakeID[idV] = existing
+		anyfound = true
+	}
+
+	restorer := func(f idfuncs) func() {
+		return func() {
+			cpuid = f.cpuid
+			cpuidex = f.cpuidex
+			xgetbv = f.xgetbv
+		}
+	}(idfuncs{cpuid: cpuid, cpuidex: cpuidex, xgetbv: xgetbv})
+
+	cpuid = func(op uint32) (eax, ebx, ecx, edx uint32) {
+		if op == 0x80000000 || op == 0 {
+			var ok bool
+			_, ok = fakeID[op]
+			if !ok {
+				return 0, 0, 0, 0
+			}
+		}
+		first, ok := fakeID[op]
+		if !ok {
+			if op > maxFunctionID() {
+				panic(fmt.Sprintf("Base not found: %v, request:%#v\n", fakeID, op))
+			} else {
+				// we have some entries missing
+				return 0, 0, 0, 0
+			}
+		}
+		theid := first[0]
+		return theid[0], theid[1], theid[2], theid[3]
+	}
+	cpuidex = func(op, op2 uint32) (eax, ebx, ecx, edx uint32) {
+		if op == 0x80000000 {
+			var ok bool
+			_, ok = fakeID[op]
+			if !ok {
+				return 0, 0, 0, 0
+			}
+		}
+		first, ok := fakeID[op]
+		if !ok {
+			if op > maxExtendedFunction() {
+				panic(fmt.Sprintf("Extended not found Info: %v, request:%#v, %#v\n", fakeID, op, op2))
+			} else {
+				// we have some entries missing
+				return 0, 0, 0, 0
+			}
+		}
+		if int(op2) >= len(first) {
+			//fmt.Printf("Extended not found Info: %v, request:%#v, %#v\n", fakeID, op, op2)
+			return 0, 0, 0, 0
+		}
+		theid := first[op2]
+		return theid[0], theid[1], theid[2], theid[3]
+	}
+	xgetbv = func(index uint32) (eax, edx uint32) {
+		first, ok := fakeID[1]
+		if !ok {
+			panic(fmt.Sprintf("XGETBV not supported %v", fakeID))
+		}
+		second := first[0]
+		// ECX bit 26 must be set
+		if (second[2] & 1 << 26) == 0 {
+			panic(fmt.Sprintf("XGETBV not supported %v", fakeID))
+		}
+		// We don't have any data to return, unfortunately
+		return 0, 0
+	}
+	return restorer
+}
+
+func TestMocks(t *testing.T) {
+	zr, err := zip.OpenReader("testdata/cpuid_data.zip")
+	if err != nil {
+		t.Skip("No testdata:", err)
+	}
+	defer zr.Close()
+	for _, f := range zr.File {
+		rc, err := f.Open()
+		if err != nil {
+			t.Fatal(err)
+		}
+		content, err := ioutil.ReadAll(rc)
+		if err != nil {
+			t.Fatal(err)
+		}
+		rc.Close()
+		t.Log("Opening", f.FileInfo().Name())
+		restore := mockCPU(content)
+		Detect()
+		t.Log("Name:", CPU.BrandName)
+		n := maxFunctionID()
+		t.Logf("Max Function:0x%x\n", n)
+		n = maxExtendedFunction()
+		t.Logf("Max Extended Function:0x%x\n", n)
+		t.Log("PhysicalCores:", CPU.PhysicalCores)
+		t.Log("ThreadsPerCore:", CPU.ThreadsPerCore)
+		t.Log("LogicalCores:", CPU.LogicalCores)
+		t.Log("Family", CPU.Family, "Model:", CPU.Model)
+		t.Log("Features:", CPU.Features)
+		t.Log("Cacheline bytes:", CPU.CacheLine)
+		t.Log("L1 Instruction Cache:", CPU.Cache.L1I, "bytes")
+		t.Log("L1 Data Cache:", CPU.Cache.L1D, "bytes")
+		t.Log("L2 Cache:", CPU.Cache.L2, "bytes")
+		t.Log("L3 Cache:", CPU.Cache.L3, "bytes")
+		if CPU.LogicalCores > 0 && CPU.PhysicalCores > 0 {
+			if CPU.LogicalCores != CPU.PhysicalCores*CPU.ThreadsPerCore {
+				t.Fatalf("Core count mismatch, LogicalCores (%d) != PhysicalCores (%d) * CPU.ThreadsPerCore (%d)",
+					CPU.LogicalCores, CPU.PhysicalCores, CPU.ThreadsPerCore)
+			}
+		}
+
+		if CPU.ThreadsPerCore > 1 && !CPU.HTT() {
+			t.Fatalf("Hyperthreading not detected")
+		}
+		if CPU.ThreadsPerCore == 1 && CPU.HTT() {
+			t.Fatalf("Hyperthreading detected, but only 1 Thread per core")
+		}
+		restore()
+	}
+	Detect()
+
+}
--- a/vendor/github.com/klauspost/cpuid/private-gen.go
+++ b/vendor/github.com/klauspost/cpuid/private-gen.go
@ -0,0 +1,476 @@
+// +build ignore
+
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"go/ast"
+	"go/parser"
+	"go/printer"
+	"go/token"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"reflect"
+	"strings"
+	"unicode"
+	"unicode/utf8"
+)
+
+var inFiles = []string{"cpuid.go", "cpuid_test.go"}
+var copyFiles = []string{"cpuid_amd64.s", "cpuid_386.s", "detect_ref.go", "detect_intel.go"}
+var fileSet = token.NewFileSet()
+var reWrites = []rewrite{
+	initRewrite("CPUInfo -> cpuInfo"),
+	initRewrite("Vendor -> vendor"),
+	initRewrite("Flags -> flags"),
+	initRewrite("Detect -> detect"),
+	initRewrite("CPU -> cpu"),
+}
+var excludeNames = map[string]bool{"string": true, "join": true, "trim": true,
+	// cpuid_test.go
+	"t": true, "println": true, "logf": true, "log": true, "fatalf": true, "fatal": true,
+}
+
+var excludePrefixes = []string{"test", "benchmark"}
+
+func main() {
+	Package := "private"
+	parserMode := parser.ParseComments
+	exported := make(map[string]rewrite)
+	for _, file := range inFiles {
+		in, err := os.Open(file)
+		if err != nil {
+			log.Fatalf("opening input", err)
+		}
+
+		src, err := ioutil.ReadAll(in)
+		if err != nil {
+			log.Fatalf("reading input", err)
+		}
+
+		astfile, err := parser.ParseFile(fileSet, file, src, parserMode)
+		if err != nil {
+			log.Fatalf("parsing input", err)
+		}
+
+		for _, rw := range reWrites {
+			astfile = rw(astfile)
+		}
+
+		// Inspect the AST and print all identifiers and literals.
+		var startDecl token.Pos
+		var endDecl token.Pos
+		ast.Inspect(astfile, func(n ast.Node) bool {
+			var s string
+			switch x := n.(type) {
+			case *ast.Ident:
+				if x.IsExported() {
+					t := strings.ToLower(x.Name)
+					for _, pre := range excludePrefixes {
+						if strings.HasPrefix(t, pre) {
+							return true
+						}
+					}
+					if excludeNames[t] != true {
+						//if x.Pos() > startDecl && x.Pos() < endDecl {
+						exported[x.Name] = initRewrite(x.Name + " -> " + t)
+					}
+				}
+
+			case *ast.GenDecl:
+				if x.Tok == token.CONST && x.Lparen > 0 {
+					startDecl = x.Lparen
+					endDecl = x.Rparen
+					// fmt.Printf("Decl:%s -> %s\n", fileSet.Position(startDecl), fileSet.Position(endDecl))
+				}
+			}
+			if s != "" {
+				fmt.Printf("%s:\t%s\n", fileSet.Position(n.Pos()), s)
+			}
+			return true
+		})
+
+		for _, rw := range exported {
+			astfile = rw(astfile)
+		}
+
+		var buf bytes.Buffer
+
+		printer.Fprint(&buf, fileSet, astfile)
+
+		// Remove package documentation and insert information
+		s := buf.String()
+		ind := strings.Index(buf.String(), "\npackage cpuid")
+		s = s[ind:]
+		s = "// Generated, DO NOT EDIT,\n" +
+			"// but copy it to your own project and rename the package.\n" +
+			"// See more at http://github.com/klauspost/cpuid\n" +
+			s
+
+		outputName := Package + string(os.PathSeparator) + file
+
+		err = ioutil.WriteFile(outputName, []byte(s), 0644)
+		if err != nil {
+			log.Fatalf("writing output: %s", err)
+		}
+		log.Println("Generated", outputName)
+	}
+
+	for _, file := range copyFiles {
+		dst := ""
+		if strings.HasPrefix(file, "cpuid") {
+			dst = Package + string(os.PathSeparator) + file
+		} else {
+			dst = Package + string(os.PathSeparator) + "cpuid_" + file
+		}
+		err := copyFile(file, dst)
+		if err != nil {
+			log.Fatalf("copying file: %s", err)
+		}
+		log.Println("Copied", dst)
+	}
+}
+
+// CopyFile copies a file from src to dst. If src and dst files exist, and are
+// the same, then return success. Copy the file contents from src to dst.
+func copyFile(src, dst string) (err error) {
+	sfi, err := os.Stat(src)
+	if err != nil {
+		return
+	}
+	if !sfi.Mode().IsRegular() {
+		// cannot copy non-regular files (e.g., directories,
+		// symlinks, devices, etc.)
+		return fmt.Errorf("CopyFile: non-regular source file %s (%q)", sfi.Name(), sfi.Mode().String())
+	}
+	dfi, err := os.Stat(dst)
+	if err != nil {
+		if !os.IsNotExist(err) {
+			return
+		}
+	} else {
+		if !(dfi.Mode().IsRegular()) {
+			return fmt.Errorf("CopyFile: non-regular destination file %s (%q)", dfi.Name(), dfi.Mode().String())
+		}
+		if os.SameFile(sfi, dfi) {
+			return
+		}
+	}
+	err = copyFileContents(src, dst)
+	return
+}
+
+// copyFileContents copies the contents of the file named src to the file named
+// by dst. The file will be created if it does not already exist. If the
+// destination file exists, all it's contents will be replaced by the contents
+// of the source file.
+func copyFileContents(src, dst string) (err error) {
+	in, err := os.Open(src)
+	if err != nil {
+		return
+	}
+	defer in.Close()
+	out, err := os.Create(dst)
+	if err != nil {
+		return
+	}
+	defer func() {
+		cerr := out.Close()
+		if err == nil {
+			err = cerr
+		}
+	}()
+	if _, err = io.Copy(out, in); err != nil {
+		return
+	}
+	err = out.Sync()
+	return
+}
+
+type rewrite func(*ast.File) *ast.File
+
+// Mostly copied from gofmt
+func initRewrite(rewriteRule string) rewrite {
+	f := strings.Split(rewriteRule, "->")
+	if len(f) != 2 {
+		fmt.Fprintf(os.Stderr, "rewrite rule must be of the form 'pattern -> replacement'\n")
+		os.Exit(2)
+	}
+	pattern := parseExpr(f[0], "pattern")
+	replace := parseExpr(f[1], "replacement")
+	return func(p *ast.File) *ast.File { return rewriteFile(pattern, replace, p) }
+}
+
+// parseExpr parses s as an expression.
+// It might make sense to expand this to allow statement patterns,
+// but there are problems with preserving formatting and also
+// with what a wildcard for a statement looks like.
+func parseExpr(s, what string) ast.Expr {
+	x, err := parser.ParseExpr(s)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "parsing %s %s at %s\n", what, s, err)
+		os.Exit(2)
+	}
+	return x
+}
+
+// Keep this function for debugging.
+/*
+func dump(msg string, val reflect.Value) {
+	fmt.Printf("%s:\n", msg)
+	ast.Print(fileSet, val.Interface())
+	fmt.Println()
+}
+*/
+
+// rewriteFile applies the rewrite rule 'pattern -> replace' to an entire file.
+func rewriteFile(pattern, replace ast.Expr, p *ast.File) *ast.File {
+	cmap := ast.NewCommentMap(fileSet, p, p.Comments)
+	m := make(map[string]reflect.Value)
+	pat := reflect.ValueOf(pattern)
+	repl := reflect.ValueOf(replace)
+
+	var rewriteVal func(val reflect.Value) reflect.Value
+	rewriteVal = func(val reflect.Value) reflect.Value {
+		// don't bother if val is invalid to start with
+		if !val.IsValid() {
+			return reflect.Value{}
+		}
+		for k := range m {
+			delete(m, k)
+		}
+		val = apply(rewriteVal, val)
+		if match(m, pat, val) {
+			val = subst(m, repl, reflect.ValueOf(val.Interface().(ast.Node).Pos()))
+		}
+		return val
+	}
+
+	r := apply(rewriteVal, reflect.ValueOf(p)).Interface().(*ast.File)
+	r.Comments = cmap.Filter(r).Comments() // recreate comments list
+	return r
+}
+
+// set is a wrapper for x.Set(y); it protects the caller from panics if x cannot be changed to y.
+func set(x, y reflect.Value) {
+	// don't bother if x cannot be set or y is invalid
+	if !x.CanSet() || !y.IsValid() {
+		return
+	}
+	defer func() {
+		if x := recover(); x != nil {
+			if s, ok := x.(string); ok &&
+				(strings.Contains(s, "type mismatch") || strings.Contains(s, "not assignable")) {
+				// x cannot be set to y - ignore this rewrite
+				return
+			}
+			panic(x)
+		}
+	}()
+	x.Set(y)
+}
+
+// Values/types for special cases.
+var (
+	objectPtrNil = reflect.ValueOf((*ast.Object)(nil))
+	scopePtrNil  = reflect.ValueOf((*ast.Scope)(nil))
+
+	identType     = reflect.TypeOf((*ast.Ident)(nil))
+	objectPtrType = reflect.TypeOf((*ast.Object)(nil))
+	positionType  = reflect.TypeOf(token.NoPos)
+	callExprType  = reflect.TypeOf((*ast.CallExpr)(nil))
+	scopePtrType  = reflect.TypeOf((*ast.Scope)(nil))
+)
+
+// apply replaces each AST field x in val with f(x), returning val.
+// To avoid extra conversions, f operates on the reflect.Value form.
+func apply(f func(reflect.Value) reflect.Value, val reflect.Value) reflect.Value {
+	if !val.IsValid() {
+		return reflect.Value{}
+	}
+
+	// *ast.Objects introduce cycles and are likely incorrect after
+	// rewrite; don't follow them but replace with nil instead
+	if val.Type() == objectPtrType {
+		return objectPtrNil
+	}
+
+	// similarly for scopes: they are likely incorrect after a rewrite;
+	// replace them with nil
+	if val.Type() == scopePtrType {
+		return scopePtrNil
+	}
+
+	switch v := reflect.Indirect(val); v.Kind() {
+	case reflect.Slice:
+		for i := 0; i < v.Len(); i++ {
+			e := v.Index(i)
+			set(e, f(e))
+		}
+	case reflect.Struct:
+		for i := 0; i < v.NumField(); i++ {
+			e := v.Field(i)
+			set(e, f(e))
+		}
+	case reflect.Interface:
+		e := v.Elem()
+		set(v, f(e))
+	}
+	return val
+}
+
+func isWildcard(s string) bool {
+	rune, size := utf8.DecodeRuneInString(s)
+	return size == len(s) && unicode.IsLower(rune)
+}
+
+// match returns true if pattern matches val,
+// recording wildcard submatches in m.
+// If m == nil, match checks whether pattern == val.
+func match(m map[string]reflect.Value, pattern, val reflect.Value) bool {
+	// Wildcard matches any expression.  If it appears multiple
+	// times in the pattern, it must match the same expression
+	// each time.
+	if m != nil && pattern.IsValid() && pattern.Type() == identType {
+		name := pattern.Interface().(*ast.Ident).Name
+		if isWildcard(name) && val.IsValid() {
+			// wildcards only match valid (non-nil) expressions.
+			if _, ok := val.Interface().(ast.Expr); ok && !val.IsNil() {
+				if old, ok := m[name]; ok {
+					return match(nil, old, val)
+				}
+				m[name] = val
+				return true
+			}
+		}
+	}
+
+	// Otherwise, pattern and val must match recursively.
+	if !pattern.IsValid() || !val.IsValid() {
+		return !pattern.IsValid() && !val.IsValid()
+	}
+	if pattern.Type() != val.Type() {
+		return false
+	}
+
+	// Special cases.
+	switch pattern.Type() {
+	case identType:
+		// For identifiers, only the names need to match
+		// (and none of the other *ast.Object information).
+		// This is a common case, handle it all here instead
+		// of recursing down any further via reflection.
+		p := pattern.Interface().(*ast.Ident)
+		v := val.Interface().(*ast.Ident)
+		return p == nil && v == nil || p != nil && v != nil && p.Name == v.Name
+	case objectPtrType, positionType:
+		// object pointers and token positions always match
+		return true
+	case callExprType:
+		// For calls, the Ellipsis fields (token.Position) must
+		// match since that is how f(x) and f(x...) are different.
+		// Check them here but fall through for the remaining fields.
+		p := pattern.Interface().(*ast.CallExpr)
+		v := val.Interface().(*ast.CallExpr)
+		if p.Ellipsis.IsValid() != v.Ellipsis.IsValid() {
+			return false
+		}
+	}
+
+	p := reflect.Indirect(pattern)
+	v := reflect.Indirect(val)
+	if !p.IsValid() || !v.IsValid() {
+		return !p.IsValid() && !v.IsValid()
+	}
+
+	switch p.Kind() {
+	case reflect.Slice:
+		if p.Len() != v.Len() {
+			return false
+		}
+		for i := 0; i < p.Len(); i++ {
+			if !match(m, p.Index(i), v.Index(i)) {
+				return false
+			}
+		}
+		return true
+
+	case reflect.Struct:
+		for i := 0; i < p.NumField(); i++ {
+			if !match(m, p.Field(i), v.Field(i)) {
+				return false
+			}
+		}
+		return true
+
+	case reflect.Interface:
+		return match(m, p.Elem(), v.Elem())
+	}
+
+	// Handle token integers, etc.
+	return p.Interface() == v.Interface()
+}
+
+// subst returns a copy of pattern with values from m substituted in place
+// of wildcards and pos used as the position of tokens from the pattern.
+// if m == nil, subst returns a copy of pattern and doesn't change the line
+// number information.
+func subst(m map[string]reflect.Value, pattern reflect.Value, pos reflect.Value) reflect.Value {
+	if !pattern.IsValid() {
+		return reflect.Value{}
+	}
+
+	// Wildcard gets replaced with map value.
+	if m != nil && pattern.Type() == identType {
+		name := pattern.Interface().(*ast.Ident).Name
+		if isWildcard(name) {
+			if old, ok := m[name]; ok {
+				return subst(nil, old, reflect.Value{})
+			}
+		}
+	}
+
+	if pos.IsValid() && pattern.Type() == positionType {
+		// use new position only if old position was valid in the first place
+		if old := pattern.Interface().(token.Pos); !old.IsValid() {
+			return pattern
+		}
+		return pos
+	}
+
+	// Otherwise copy.
+	switch p := pattern; p.Kind() {
+	case reflect.Slice:
+		v := reflect.MakeSlice(p.Type(), p.Len(), p.Len())
+		for i := 0; i < p.Len(); i++ {
+			v.Index(i).Set(subst(m, p.Index(i), pos))
+		}
+		return v
+
+	case reflect.Struct:
+		v := reflect.New(p.Type()).Elem()
+		for i := 0; i < p.NumField(); i++ {
+			v.Field(i).Set(subst(m, p.Field(i), pos))
+		}
+		return v
+
+	case reflect.Ptr:
+		v := reflect.New(p.Type()).Elem()
+		if elem := p.Elem(); elem.IsValid() {
+			v.Set(subst(m, elem, pos).Addr())
+		}
+		return v
+
+	case reflect.Interface:
+		v := reflect.New(p.Type()).Elem()
+		if elem := p.Elem(); elem.IsValid() {
+			v.Set(subst(m, elem, pos))
+		}
+		return v
+	}
+
+	return pattern
+}
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@ -52,6 +52,11 @@
 			"revision": "7e3c02b30806fa5779d3bdfc152ce4c6f40e7b38",
 			"revisionTime": "2016-01-19T13:13:26-08:00"
 		},
+		{
+			"path": "github.com/klauspost/cpuid",
+			"revision": "349c675778172472f5e8f3a3e0fe187e302e5a10",
+			"revisionTime": "2016-01-06T11:44:51+01:00"
+		},
 		{
 			"path": "github.com/mattn/go-isatty",
 			"revision": "7fcbc72f853b92b5720db4a6b8482be612daef24",