| // 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) |
| } |
| } |