コード例 #1
0
ファイル: binary.go プロジェクト: gitter-badger/ark
func (v *Codegen) createBitcode(file *parser.Module) string {
	filename := file.Name + ".bc"

	fileHandle, err := os.OpenFile(filename, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
	if err != nil {
		v.err("Couldn't create bitcode file "+filename+": `%s`", err.Error())
	}
	defer fileHandle.Close()

	if err := llvm.WriteBitcodeToFile(file.Module, fileHandle); err != nil {
		v.err("failed to write bitcode to file for "+file.Name+": `%s`", err.Error())
	}

	return filename
}
コード例 #2
0
ファイル: gllgo.go プロジェクト: glycerine/llgo
func performAction(opts *driverOptions, kind actionKind, inputs []string, output string) error {
	switch kind {
	case actionPrint:
		switch opts.output {
		case "-dumpversion":
			fmt.Println("llgo-" + llvmVersion())
			return nil
		case "-print-libgcc-file-name":
			cmd := exec.Command(opts.bprefix+"gcc", "-print-libgcc-file-name")
			out, err := cmd.CombinedOutput()
			os.Stdout.Write(out)
			return err
		case "-print-multi-os-directory":
			fmt.Println(filepath.Join("..", getLibDir(opts)))
			return nil
		case "--version":
			displayVersion()
			return nil
		default:
			panic("unexpected print command")
		}

	case actionCompile, actionAssemble:
		compiler, err := initCompiler(opts)
		if err != nil {
			return err
		}

		fset := token.NewFileSet()
		files, err := driver.ParseFiles(fset, inputs)
		if err != nil {
			return err
		}

		module, err := compiler.Compile(fset, files, opts.pkgpath)
		if err != nil {
			return err
		}

		defer module.Dispose()

		target, err := llvm.GetTargetFromTriple(opts.triple)
		if err != nil {
			return err
		}

		optLevel := [...]llvm.CodeGenOptLevel{
			llvm.CodeGenLevelNone,
			llvm.CodeGenLevelLess,
			llvm.CodeGenLevelDefault,
			llvm.CodeGenLevelAggressive,
		}[opts.optLevel]

		relocMode := llvm.RelocStatic
		if opts.pic {
			relocMode = llvm.RelocPIC
		}

		tm := target.CreateTargetMachine(opts.triple, "", "", optLevel,
			relocMode, llvm.CodeModelDefault)
		defer tm.Dispose()

		runPasses(opts, tm, module.Module)

		var file *os.File
		if output == "-" {
			file = os.Stdout
		} else {
			file, err = os.Create(output)
			if err != nil {
				return err
			}
			defer file.Close()
		}

		switch {
		case !opts.lto && !opts.emitIR:
			if module.ExportData != nil {
				asm := getMetadataSectionInlineAsm(".go_export")
				asm += getDataInlineAsm(module.ExportData)
				module.Module.SetInlineAsm(asm)
			}

			fileType := llvm.AssemblyFile
			if kind == actionCompile {
				fileType = llvm.ObjectFile
			}
			mb, err := tm.EmitToMemoryBuffer(module.Module, fileType)
			if err != nil {
				return err
			}
			defer mb.Dispose()

			bytes := mb.Bytes()
			_, err = file.Write(bytes)
			return err

		case opts.lto:
			bcmb := llvm.WriteBitcodeToMemoryBuffer(module.Module)
			defer bcmb.Dispose()

			// This is a bit of a hack. We just want an object file
			// containing some metadata sections. This might be simpler
			// if we had bindings for the MC library, but for now we create
			// a fresh module containing only inline asm that creates the
			// sections.
			outmodule := llvm.NewModule("")
			defer outmodule.Dispose()
			asm := getMetadataSectionInlineAsm(".llvmbc")
			asm += getDataInlineAsm(bcmb.Bytes())
			if module.ExportData != nil {
				asm += getMetadataSectionInlineAsm(".go_export")
				asm += getDataInlineAsm(module.ExportData)
			}
			outmodule.SetInlineAsm(asm)

			fileType := llvm.AssemblyFile
			if kind == actionCompile {
				fileType = llvm.ObjectFile
			}
			mb, err := tm.EmitToMemoryBuffer(outmodule, fileType)
			if err != nil {
				return err
			}
			defer mb.Dispose()

			bytes := mb.Bytes()
			_, err = file.Write(bytes)
			return err

		case kind == actionCompile:
			err := llvm.WriteBitcodeToFile(module.Module, file)
			return err

		case kind == actionAssemble:
			_, err := file.WriteString(module.Module.String())
			return err

		default:
			panic("unexpected action kind")
		}

	case actionLink:
		// TODO(pcc): Teach this to do LTO.
		args := []string{"-o", output}
		if opts.pic {
			args = append(args, "-fPIC")
		}
		if opts.pieLink {
			args = append(args, "-pie")
		}
		if opts.staticLink {
			args = append(args, "-static")
		}
		if opts.staticLibgcc {
			args = append(args, "-static-libgcc")
		}
		for _, p := range opts.libPaths {
			args = append(args, "-L", p)
		}
		for _, p := range opts.importPaths {
			args = append(args, "-I", p)
		}
		args = append(args, inputs...)
		var linkerPath string
		if opts.gccgoPath == "" {
			// TODO(pcc): See if we can avoid calling gcc here.
			// We currently rely on it to find crt*.o and compile
			// any C source files passed as arguments.
			linkerPath = opts.bprefix + "gcc"

			if opts.prefix != "" {
				libdir := filepath.Join(opts.prefix, getLibDir(opts))
				args = append(args, "-L", libdir)
				if !opts.staticLibgo {
					args = append(args, "-Wl,-rpath,"+libdir)
				}
			}

			args = append(args, "-lgobegin-llgo")
			if opts.staticLibgo {
				args = append(args, "-Wl,-Bstatic", "-lgo-llgo", "-Wl,-Bdynamic", "-lpthread", "-lm")
			} else {
				args = append(args, "-lgo-llgo")
			}
		} else {
			linkerPath = opts.gccgoPath
			if opts.staticLibgo {
				args = append(args, "-static-libgo")
			}
		}

		args = opts.sanitizer.addLibs(opts.triple, args)

		cmd := exec.Command(linkerPath, args...)
		out, err := cmd.CombinedOutput()
		if err != nil {
			os.Stderr.Write(out)
		}
		return err

	default:
		panic("unexpected action kind")
	}
}