1 // +build !nacl,!windows 2 // run 3 4 // Copyright 2011 The Go Authors. All rights reserved. 5 // Use of this source code is governed by a BSD-style 6 // license that can be found in the LICENSE file. 7 8 // Test that compiling with optimization turned on produces faster code. 9 10 package main 11 12 import ( 13 "fmt" 14 "os" 15 "os/exec" 16 "path/filepath" 17 ) 18 19 func main() { 20 err := os.Chdir(filepath.Join(".", "fixedbugs", "bug369.dir")) 21 check(err) 22 23 run("go", "tool", "compile", "-N", "-o", "slow.o", "pkg.go") 24 run("go", "tool", "compile", "-o", "fast.o", "pkg.go") 25 run("go", "tool", "compile", "-o", "main.o", "main.go") 26 run("go", "tool", "link", "-o", "a.exe", "main.o") 27 run("." + string(filepath.Separator) + "a.exe") 28 29 os.Remove("slow.o") 30 os.Remove("fast.o") 31 os.Remove("main.o") 32 os.Remove("a.exe") 33 } 34 35 func run(name string, args ...string) { 36 cmd := exec.Command(name, args...) 37 out, err := cmd.CombinedOutput() 38 if err != nil { 39 fmt.Println(string(out)) 40 fmt.Println(err) 41 os.Exit(1) 42 } 43 } 44 45 func check(err error) { 46 if err != nil { 47 fmt.Println(err) 48 os.Exit(1) 49 } 50 } 51
