| // 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. |
| |
| // +build 386 amd64 amd64p32 |
| |
| package cpu_test |
| |
| import ( |
| . "internal/cpu" |
| "os" |
| "runtime" |
| "testing" |
| ) |
| |
| func TestAMD64minimalFeatures(t *testing.T) { |
| if runtime.GOARCH != "amd64" { |
| return |
| } |
| |
| if !X86.HasSSE2 { |
| t.Fatalf("HasSSE2 expected true, got false") |
| } |
| } |
| |
| func TestX86ifAVX2hasAVX(t *testing.T) { |
| if X86.HasAVX2 && !X86.HasAVX { |
| t.Fatalf("HasAVX expected true when HasAVX2 is true, got false") |
| } |
| } |
| |
| func TestDisableSSE2(t *testing.T) { |
| runDebugOptionsTest(t, "TestSSE2DebugOption", "sse2=0") |
| } |
| |
| func TestSSE2DebugOption(t *testing.T) { |
| MustHaveDebugOptionsEnabled(t) |
| |
| if os.Getenv("GODEBUGCPU") != "sse2=0" { |
| t.Skipf("skipping test: GODEBUGCPU=sse2=0 not set") |
| } |
| |
| want := runtime.GOARCH != "386" // SSE2 can only be disabled on 386. |
| if got := X86.HasSSE2; got != want { |
| t.Errorf("X86.HasSSE2 on %s expected %v, got %v", runtime.GOARCH, want, got) |
| } |
| } |