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diff --git a/lib/Target/Lanai/LanaiMachineFunctionInfo.h b/lib/Target/Lanai/LanaiMachineFunctionInfo.h
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+++ b/lib/Target/Lanai/LanaiMachineFunctionInfo.h
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+//===- LanaiMachineFuctionInfo.h - Lanai machine func info -------*- C++ -*-==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares Lanai-specific per-machine-function information.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_LANAI_LANAIMACHINEFUNCTIONINFO_H
+#define LLVM_LIB_TARGET_LANAI_LANAIMACHINEFUNCTIONINFO_H
+
+#include "LanaiRegisterInfo.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
+
+namespace llvm {
+
+// LanaiMachineFunctionInfo - This class is derived from MachineFunction and
+// contains private Lanai target-specific information for each MachineFunction.
+class LanaiMachineFunctionInfo : public MachineFunctionInfo {
+  virtual void anchor();
+
+  MachineFunction &MF;
+
+  // SRetReturnReg - Lanai ABI require that sret lowering includes
+  // returning the value of the returned struct in a register. This field
+  // holds the virtual register into which the sret argument is passed.
+  unsigned SRetReturnReg;
+
+  // GlobalBaseReg - keeps track of the virtual register initialized for
+  // use as the global base register. This is used for PIC in some PIC
+  // relocation models.
+  unsigned GlobalBaseReg;
+
+  // VarArgsFrameIndex - FrameIndex for start of varargs area.
+  int VarArgsFrameIndex;
+
+public:
+  explicit LanaiMachineFunctionInfo(MachineFunction &MF)
+      : MF(MF), SRetReturnReg(0), GlobalBaseReg(0), VarArgsFrameIndex(0) {}
+
+  unsigned getSRetReturnReg() const { return SRetReturnReg; }
+  void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
+
+  unsigned getGlobalBaseReg();
+
+  int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
+  void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
+};
+
+} // namespace llvm
+
+#endif // LLVM_LIB_TARGET_LANAI_LANAIMACHINEFUNCTIONINFO_H