blob: c04ea74444df505e96a88c95a7de6e1467520998 [file] [log] [blame]
// 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_test
import (
"runtime"
"testing"
"golang.org/x/sys/cpu"
)
func TestAMD64minimalFeatures(t *testing.T) {
if runtime.GOARCH == "amd64" {
if !cpu.Initialized {
t.Fatal("Initialized expected true, got false")
}
if !cpu.X86.HasSSE2 {
t.Fatal("HasSSE2 expected true, got false")
}
}
}
func TestAVX2hasAVX(t *testing.T) {
if runtime.GOARCH == "amd64" {
if cpu.X86.HasAVX2 && !cpu.X86.HasAVX {
t.Fatal("HasAVX expected true, got false")
}
}
}
func TestARM64minimalFeatures(t *testing.T) {
if runtime.GOARCH != "arm64" || (runtime.GOOS == "darwin" || runtime.GOOS == "ios") {
return
}
if !cpu.ARM64.HasASIMD {
t.Fatal("HasASIMD expected true, got false")
}
if !cpu.ARM64.HasFP {
t.Fatal("HasFP expected true, got false")
}
}
func TestMIPS64Initialized(t *testing.T) {
if runtime.GOARCH == "mips64" || runtime.GOARCH == "mips64le" {
if !cpu.Initialized {
t.Fatal("Initialized expected true, got false")
}
}
}
// On ppc64x, the ISA bit for POWER8 should always be set on POWER8 and beyond.
func TestPPC64minimalFeatures(t *testing.T) {
// Do not run this with gccgo on ppc64, as it doesn't have POWER8 as a minimum
// requirement.
if runtime.Compiler == "gccgo" && runtime.GOARCH == "ppc64" {
t.Skip("gccgo does not require POWER8 on ppc64; skipping")
}
if runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le" {
if !cpu.PPC64.IsPOWER8 {
t.Fatal("IsPOWER8 expected true, got false")
}
}
}
func TestS390X(t *testing.T) {
if runtime.GOARCH != "s390x" {
return
}
if testing.Verbose() {
t.Logf("%+v\n", cpu.S390X)
}
// z/Architecture is mandatory
if !cpu.S390X.HasZARCH {
t.Error("HasZARCH expected true, got false")
}
// vector-enhancements require vector facility to be enabled
if cpu.S390X.HasVXE && !cpu.S390X.HasVX {
t.Error("HasVX expected true, got false (VXE is true)")
}
}