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
5package cpu_test
6
7import (
8	"runtime"
9	"testing"
10
11	"golang.org/x/sys/cpu"
12)
13
14func TestAMD64minimalFeatures(t *testing.T) {
15	if runtime.GOARCH == "amd64" {
16		if !cpu.Initialized {
17			t.Fatal("Initialized expected true, got false")
18		}
19		if !cpu.X86.HasSSE2 {
20			t.Fatal("HasSSE2 expected true, got false")
21		}
22	}
23}
24
25func TestAVX2hasAVX(t *testing.T) {
26	if runtime.GOARCH == "amd64" {
27		if cpu.X86.HasAVX2 && !cpu.X86.HasAVX {
28			t.Fatal("HasAVX expected true, got false")
29		}
30	}
31}
32
33func TestAVX512HasAVX2AndAVX(t *testing.T) {
34	if runtime.GOARCH == "amd64" {
35		if cpu.X86.HasAVX512 && !cpu.X86.HasAVX {
36			t.Fatal("HasAVX expected true, got false")
37		}
38		if cpu.X86.HasAVX512 && !cpu.X86.HasAVX2 {
39			t.Fatal("HasAVX2 expected true, got false")
40		}
41	}
42}
43
44func TestARM64minimalFeatures(t *testing.T) {
45	if runtime.GOARCH != "arm64" || runtime.GOOS == "ios" {
46		return
47	}
48	if !cpu.ARM64.HasASIMD {
49		t.Fatal("HasASIMD expected true, got false")
50	}
51	if !cpu.ARM64.HasFP {
52		t.Fatal("HasFP expected true, got false")
53	}
54}
55
56func TestMIPS64Initialized(t *testing.T) {
57	if runtime.GOARCH == "mips64" || runtime.GOARCH == "mips64le" {
58		if !cpu.Initialized {
59			t.Fatal("Initialized expected true, got false")
60		}
61	}
62}
63
64// On ppc64x, the ISA bit for POWER8 should always be set on POWER8 and beyond.
65func TestPPC64minimalFeatures(t *testing.T) {
66	// Do not run this with gccgo on ppc64, as it doesn't have POWER8 as a minimum
67	// requirement.
68	if runtime.Compiler == "gccgo" && runtime.GOARCH == "ppc64" {
69		t.Skip("gccgo does not require POWER8 on ppc64; skipping")
70	}
71	if runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le" {
72		if !cpu.PPC64.IsPOWER8 {
73			t.Fatal("IsPOWER8 expected true, got false")
74		}
75	}
76}
77