github.com/AESNooper/go/src@v0.0.0-20220218095104-b56a4ab1bbbb/internal/cpu/cpu_x86_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  //go:build 386 || amd64
     6  
     7  package cpu_test
     8  
     9  import (
    10  	. "internal/cpu"
    11  	"internal/godebug"
    12  	"testing"
    13  )
    14  
    15  func TestX86ifAVX2hasAVX(t *testing.T) {
    16  	if X86.HasAVX2 && !X86.HasAVX {
    17  		t.Fatalf("HasAVX expected true when HasAVX2 is true, got false")
    18  	}
    19  }
    20  
    21  func TestDisableSSE3(t *testing.T) {
    22  	runDebugOptionsTest(t, "TestSSE3DebugOption", "cpu.sse3=off")
    23  }
    24  
    25  func TestSSE3DebugOption(t *testing.T) {
    26  	MustHaveDebugOptionsSupport(t)
    27  
    28  	if godebug.Get("cpu.sse3") != "off" {
    29  		t.Skipf("skipping test: GODEBUG=cpu.sse3=off not set")
    30  	}
    31  
    32  	want := false
    33  	if got := X86.HasSSE3; got != want {
    34  		t.Errorf("X86.HasSSE3 expected %v, got %v", want, got)
    35  	}
    36  }