--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lld/MachO/LTO.h	Tue Jun 08 06:07:14 2021 +0900
@@ -0,0 +1,43 @@
+//===- LTO.h ----------------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLD_MACHO_LTO_H
+#define LLD_MACHO_LTO_H
+
+#include "llvm/ADT/SmallString.h"
+#include <memory>
+#include <vector>
+
+namespace llvm {
+namespace lto {
+class LTO;
+} // namespace lto
+} // namespace llvm
+
+namespace lld {
+namespace macho {
+
+class BitcodeFile;
+class ObjFile;
+
+class BitcodeCompiler {
+public:
+  BitcodeCompiler();
+
+  void add(BitcodeFile &f);
+  std::vector<ObjFile *> compile();
+
+private:
+  std::unique_ptr<llvm::lto::LTO> ltoObj;
+  std::vector<llvm::SmallString<0>> buf;
+};
+
+} // namespace macho
+} // namespace lld
+
+#endif