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diff --git a/contrib/llvm/include/llvm/CodeGen/MIRParser/MIRParser.h b/contrib/llvm/include/llvm/CodeGen/MIRParser/MIRParser.h
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+++ b/contrib/llvm/include/llvm/CodeGen/MIRParser/MIRParser.h
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+//===- MIRParser.h - MIR serialization format parser ----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This MIR serialization library is currently a work in progress. It can't
+// serialize machine functions at this time.
+//
+// This file declares the functions that parse the MIR serialization format
+// files.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_MIRPARSER_MIRPARSER_H
+#define LLVM_CODEGEN_MIRPARSER_MIRPARSER_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/CodeGen/MachineFunctionInitializer.h"
+#include "llvm/IR/Module.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include <memory>
+
+namespace llvm {
+
+class MIRParserImpl;
+class SMDiagnostic;
+
+/// This class initializes machine functions by applying the state loaded from
+/// a MIR file.
+class MIRParser : public MachineFunctionInitializer {
+  std::unique_ptr<MIRParserImpl> Impl;
+
+public:
+  MIRParser(std::unique_ptr<MIRParserImpl> Impl);
+  MIRParser(const MIRParser &) = delete;
+  ~MIRParser();
+
+  /// Parse the optional LLVM IR module that's embedded in the MIR file.
+  ///
+  /// A new, empty module is created if the LLVM IR isn't present.
+  /// Returns null if a parsing error occurred.
+  std::unique_ptr<Module> parseLLVMModule();
+
+  /// Initialize the machine function to the state that's described in the MIR
+  /// file.
+  ///
+  /// Return true if error occurred.
+  bool initializeMachineFunction(MachineFunction &MF) override;
+};
+
+/// This function is the main interface to the MIR serialization format parser.
+///
+/// It reads in a MIR file and returns a MIR parser that can parse the embedded
+/// LLVM IR module and initialize the machine functions by parsing the machine
+/// function's state.
+///
+/// \param Filename - The name of the file to parse.
+/// \param Error - Error result info.
+/// \param Context - Context which will be used for the parsed LLVM IR module.
+std::unique_ptr<MIRParser> createMIRParserFromFile(StringRef Filename,
+                                                   SMDiagnostic &Error,
+                                                   LLVMContext &Context);
+
+/// This function is another interface to the MIR serialization format parser.
+///
+/// It returns a MIR parser that works with the given memory buffer and that can
+/// parse the embedded LLVM IR module and initialize the machine functions by
+/// parsing the machine function's state.
+///
+/// \param Contents - The MemoryBuffer containing the machine level IR.
+/// \param Context - Context which will be used for the parsed LLVM IR module.
+std::unique_ptr<MIRParser>
+createMIRParser(std::unique_ptr<MemoryBuffer> Contents, LLVMContext &Context);
+
+} // end namespace llvm
+
+#endif