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diff --git a/clang-r353983/include/llvm/CodeGen/ParallelCG.h b/clang-r353983/include/llvm/CodeGen/ParallelCG.h
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+++ b/clang-r353983/include/llvm/CodeGen/ParallelCG.h
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+//===-- llvm/CodeGen/ParallelCG.h - Parallel code generation ----*- 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This header declares functions that can be used for parallel code generation.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_PARALLELCG_H
+#define LLVM_CODEGEN_PARALLELCG_H
+
+#include "llvm/Support/CodeGen.h"
+#include "llvm/Target/TargetMachine.h"
+
+#include <functional>
+
+namespace llvm {
+
+template <typename T> class ArrayRef;
+class Module;
+class TargetOptions;
+class raw_pwrite_stream;
+
+/// Split M into OSs.size() partitions, and generate code for each. Takes a
+/// factory function for the TargetMachine TMFactory. Writes OSs.size() output
+/// files to the output streams in OSs. The resulting output files if linked
+/// together are intended to be equivalent to the single output file that would
+/// have been code generated from M.
+///
+/// Writes bitcode for individual partitions into output streams in BCOSs, if
+/// BCOSs is not empty.
+///
+/// \returns M if OSs.size() == 1, otherwise returns std::unique_ptr<Module>().
+std::unique_ptr<Module>
+splitCodeGen(std::unique_ptr<Module> M, ArrayRef<raw_pwrite_stream *> OSs,
+             ArrayRef<llvm::raw_pwrite_stream *> BCOSs,
+             const std::function<std::unique_ptr<TargetMachine>()> &TMFactory,
+             TargetMachine::CodeGenFileType FileType = TargetMachine::CGFT_ObjectFile,
+             bool PreserveLocals = false);
+
+} // namespace llvm
+
+#endif