blob: d03306c907a69671e4651c5122875966282ab51d [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.
// +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)
}
}