| // 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)") |
| } |
| } |