--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/Target/ARC/ARCMCInstLower.h	Fri Oct 27 17:07:41 2017 +0900
@@ -0,0 +1,44 @@
+//===- ARCMCInstLower.h - Lower MachineInstr to MCInst ----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_ARC_ARCMCINSTLOWER_H
+#define LLVM_LIB_TARGET_ARC_ARCMCINSTLOWER_H
+
+#include "llvm/CodeGen/MachineOperand.h"
+#include "llvm/Support/Compiler.h"
+
+namespace llvm {
+
+class MCContext;
+class MCInst;
+class MCOperand;
+class MachineInstr;
+class MachineFunction;
+class Mangler;
+class AsmPrinter;
+
+/// \brief This class is used to lower an MachineInstr into an MCInst.
+class LLVM_LIBRARY_VISIBILITY ARCMCInstLower {
+  using MachineOperandType = MachineOperand::MachineOperandType;
+  MCContext *Ctx;
+  AsmPrinter &Printer;
+
+public:
+  ARCMCInstLower(MCContext *C, AsmPrinter &asmprinter);
+  void Lower(const MachineInstr *MI, MCInst &OutMI) const;
+  MCOperand LowerOperand(const MachineOperand &MO, unsigned offset = 0) const;
+
+private:
+  MCOperand LowerSymbolOperand(const MachineOperand &MO,
+                               MachineOperandType MOTy, unsigned Offset) const;
+};
+
+} // end namespace llvm
+
+#endif // LLVM_LIB_TARGET_ARC_ARCMCINSTLOWER_H