func getRuntimeModuleFile() (string, error) {
if runtimemodulefile != "" {
return runtimemodulefile, nil
}
gofiles, llfiles, cfiles, err := getRuntimeFiles()
if err != nil {
return "", err
}
var runtimeModule *llgo.Module
runtimeModule, err = compileFiles(testCompiler, gofiles, "runtime")
defer runtimeModule.Dispose()
if err != nil {
return "", err
}
outfile := filepath.Join(tempdir, "runtime.bc")
f, err := os.Create(outfile)
if err != nil {
return "", err
}
err = llvm.WriteBitcodeToFile(runtimeModule.Module, f)
if err != nil {
f.Close()
return "", err
}
f.Close()
for i, cfile := range cfiles {
bcfile := filepath.Join(tempdir, fmt.Sprintf("%d.bc", i))
args := []string{"-c", "-emit-llvm", "-o", bcfile, cfile}
if runtime.GOOS != "darwin" {
// TODO(q): -g breaks badly on my system at the moment,
// so is not enabled on darwin for now
args = append([]string{"-g"}, args...)
}
cmd := exec.Command("clang", args...)
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
return "", fmt.Errorf("clang failed: %s", err)
}
llfiles = append(llfiles, bcfile)
}
if llfiles != nil {
args := append([]string{"-o", outfile, outfile}, llfiles...)
cmd := exec.Command("llvm-link", args...)
output, err := cmd.CombinedOutput()
if err != nil {
err = fmt.Errorf("llvm-link failed: %s", err)
fmt.Fprintf(os.Stderr, string(output))
return "", err
}
}
runtimemodulefile = outfile
return runtimemodulefile, nil
}
func runMainFunction(m *llgo.Module) (output []string, err error) {
runtimeModule, err := getRuntimeModuleFile()
if err != nil {
return
}
err = llvm.VerifyModule(m.Module, llvm.ReturnStatusAction)
if err != nil {
return nil, fmt.Errorf("Verification failed: %v", err)
}
bcpath := filepath.Join(tempdir, "test.bc")
bcfile, err := os.Create(bcpath)
if err != nil {
return nil, err
}
llvm.WriteBitcodeToFile(m.Module, bcfile)
bcfile.Close()
cmd := exec.Command("llvm-link", "-o", bcpath, bcpath, runtimeModule)
data, err := cmd.CombinedOutput()
if err != nil {
output = strings.Split(strings.TrimSpace(string(data)), "\n")
return output, fmt.Errorf("llvm-link failed: %v", err)
}
exepath := filepath.Join(tempdir, "test")
args := []string{"-pthread", "-o", exepath, bcpath}
if runtime.GOOS != "darwin" {
// TODO(q): -g breaks badly on my system at the moment, so is not enabled on darwin for now
args = append([]string{"-g"}, args...)
}
cmd = exec.Command("clang", args...)
data, err = cmd.CombinedOutput()
if err != nil {
output = strings.Split(strings.TrimSpace(string(data)), "\n")
return output, fmt.Errorf("clang failed: %v", err)
}
cmd = exec.Command(exepath)
data, err = cmd.CombinedOutput()
output = strings.Split(strings.TrimSpace(string(data)), "\n")
return output, err
}
func writeObjectFile(m *llgo.Module) error {
var outfile *os.File
switch *outputFile {
case "-":
outfile = os.Stdout
default:
var err error
outfile, err = os.Create(*outputFile)
if err != nil {
return err
}
}
err := llvm.VerifyModule(m.Module, llvm.ReturnStatusAction)
if err != nil {
return fmt.Errorf("Verification failed: %v", err)
}
return llvm.WriteBitcodeToFile(m.Module, outfile)
}