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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 TestX86ifAVX512FhasAVX2(t *testing.T) {
if X86.HasAVX512F && !X86.HasAVX2 {
t.Fatalf("HasAVX2 expected true when HasAVX512F is true, got false")
}
}
func TestX86ifAVX512BWhasAVX512F(t *testing.T) {
if X86.HasAVX512BW && !X86.HasAVX512F {
t.Fatalf("HasAVX512F expected true when HasAVX512BW is true, got false")
}
}
func TestX86ifAVX512VLhasAVX512F(t *testing.T) {
if X86.HasAVX512VL && !X86.HasAVX512F {
t.Fatalf("HasAVX512F expected true when HasAVX512VL is true, got false")
}
}
func TestDisableSSE3(t *testing.T) {
if GetGOAMD64level() > 1 {
t.Skip("skipping test: can't run on GOAMD64>v1 machines")
}
runDebugOptionsTest(t, "TestSSE3DebugOption", "cpu.sse3=off")
}
func TestSSE3DebugOption(t *testing.T) {
MustHaveDebugOptionsSupport(t)
if godebug.New("#cpu.sse3").Value() != "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)
}
}