// 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 != "linux" { return } if !cpu.ARM64.HasASIMD { t.Fatal("HasASIMD expected true, got false") } if !cpu.ARM64.HasFP { t.Fatal("HasFP 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)") } }