File: cpu_x86_test.go

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// 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.

//go:build 386 || amd64

package cpu_test

import (
	. "internal/cpu"
	"internal/godebug"
	"testing"
)

func TestX86ifAVX2hasAVX(t *testing.T) {
	if X86.HasAVX2 && !X86.HasAVX {
		t.Fatalf("HasAVX expected true when HasAVX2 is true, got false")
	}
}

func TestDisableSSE3(t *testing.T) {
	runDebugOptionsTest(t, "TestSSE3DebugOption", "cpu.sse3=off")
}

func TestSSE3DebugOption(t *testing.T) {
	MustHaveDebugOptionsSupport(t)

	if godebug.Get("cpu.sse3") != "off" {
		t.Skipf("skipping test: GODEBUG=cpu.sse3=off not set")
	}

	want := false
	if got := X86.HasSSE3; got != want {
		t.Errorf("X86.HasSSE3 expected %v, got %v", want, got)
	}
}