github.com/tristanisham/sys@v0.0.0-20240326010300-a16cbabb7555/cpu/cpu_test.go (about) 1 // Copyright 2018 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package cpu_test 6 7 import ( 8 "runtime" 9 "testing" 10 11 "golang.org/x/sys/cpu" 12 ) 13 14 func TestAMD64minimalFeatures(t *testing.T) { 15 if runtime.GOARCH == "amd64" { 16 if !cpu.Initialized { 17 t.Fatal("Initialized expected true, got false") 18 } 19 if !cpu.X86.HasSSE2 { 20 t.Fatal("HasSSE2 expected true, got false") 21 } 22 } 23 } 24 25 func TestAVX2hasAVX(t *testing.T) { 26 if runtime.GOARCH == "amd64" { 27 if cpu.X86.HasAVX2 && !cpu.X86.HasAVX { 28 t.Fatal("HasAVX expected true, got false") 29 } 30 } 31 } 32 33 func TestAVX512HasAVX2AndAVX(t *testing.T) { 34 if runtime.GOARCH == "amd64" { 35 if cpu.X86.HasAVX512 && !cpu.X86.HasAVX { 36 t.Fatal("HasAVX expected true, got false") 37 } 38 if cpu.X86.HasAVX512 && !cpu.X86.HasAVX2 { 39 t.Fatal("HasAVX2 expected true, got false") 40 } 41 } 42 } 43 44 func TestARM64minimalFeatures(t *testing.T) { 45 if runtime.GOARCH != "arm64" || runtime.GOOS == "ios" { 46 return 47 } 48 if !cpu.ARM64.HasASIMD { 49 t.Fatal("HasASIMD expected true, got false") 50 } 51 if !cpu.ARM64.HasFP { 52 t.Fatal("HasFP expected true, got false") 53 } 54 } 55 56 func TestMIPS64Initialized(t *testing.T) { 57 if runtime.GOARCH == "mips64" || runtime.GOARCH == "mips64le" { 58 if !cpu.Initialized { 59 t.Fatal("Initialized expected true, got false") 60 } 61 } 62 } 63 64 // On ppc64x, the ISA bit for POWER8 should always be set on POWER8 and beyond. 65 func TestPPC64minimalFeatures(t *testing.T) { 66 // Do not run this with gccgo on ppc64, as it doesn't have POWER8 as a minimum 67 // requirement. 68 if runtime.Compiler == "gccgo" && runtime.GOARCH == "ppc64" { 69 t.Skip("gccgo does not require POWER8 on ppc64; skipping") 70 } 71 if runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le" { 72 if !cpu.PPC64.IsPOWER8 { 73 t.Fatal("IsPOWER8 expected true, got false") 74 } 75 } 76 }