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diff --git a/lib/Target/ARM/ARMMachineFunctionInfo.h b/lib/Target/ARM/ARMMachineFunctionInfo.h
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+++ b/lib/Target/ARM/ARMMachineFunctionInfo.h
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+//====- ARMMachineFuctionInfo.h - ARM machine function info -----*- C++ -*-===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the Evan Cheng and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
+//
+// This file declares ARM-specific per-machine-function information.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ARMMACHINEFUNCTIONINFO_H
+#define ARMMACHINEFUNCTIONINFO_H
+
+#include "ARMSubtarget.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/Target/TargetMachine.h"
+
+namespace llvm {
+
+/// ARMFunctionInfo - This class is derived from MachineFunction private
+/// ARM target-specific information for each MachineFunction.
+class ARMFunctionInfo : public MachineFunctionInfo {
+
+  /// isThumb - True if this function is compiled under Thumb mode.
+  ///
+  bool isThumb;
+
+  /// VarArgsRegSaveSize - Size of the register save area for vararg functions.
+  ///
+  unsigned VarArgsRegSaveSize;
+
+  /// FramePtrSpilled - True if FP register is spilled. Set by
+  /// processFunctionBeforeCalleeSavedScan().
+  bool FramePtrSpilled;
+
+  /// FramePtrSpillOffset - If FramePtrSpilled, this records the frame pointer
+  /// spill stack offset.
+  unsigned FramePtrSpillOffset;
+
+  /// GPRCS1Offset, GPRCS2Offset, DPRCSOffset - Starting offset of callee saved
+  /// register spills areas. For Mac OS X:
+  ///
+  /// GPR callee-saved (1) : r4, r5, r6, r7, lr
+  /// --------------------------------------------
+  /// GPR callee-saved (2) : r8, r10, r11
+  /// --------------------------------------------
+  /// DPR callee-saved : d8 - d15
+  unsigned GPRCS1Offset;
+  unsigned GPRCS2Offset;
+  unsigned DPRCSOffset;
+
+  /// GPRCS1Size, GPRCS2Size, DPRCSSize - Sizes of callee saved register spills
+  /// areas.
+  unsigned GPRCS1Size;
+  unsigned GPRCS2Size;
+  unsigned DPRCSSize;
+
+  /// GPRCS1Frames, GPRCS2Frames, DPRCSFrames - Keeps track of frame indices
+  /// which belong to these spill areas.
+  std::set<int> GPRCS1Frames;
+  std::set<int> GPRCS2Frames;
+  std::set<int> DPRCSFrames;
+
+  /// JumpTableUId - Unique id for jumptables.
+  ///
+  unsigned JumpTableUId;
+
+public:
+  ARMFunctionInfo() :
+    isThumb(false),
+    VarArgsRegSaveSize(0), FramePtrSpilled(false), FramePtrSpillOffset(0),
+    GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),
+    GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0), JumpTableUId(0) {}
+
+  ARMFunctionInfo(MachineFunction &MF) :
+    isThumb(MF.getTarget().getSubtarget<ARMSubtarget>().isThumb()),
+    VarArgsRegSaveSize(0), FramePtrSpilled(false), FramePtrSpillOffset(0),
+    GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),
+    GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0), JumpTableUId(0) {}
+
+  bool isThumbFunction() const { return isThumb; }
+
+  unsigned getVarArgsRegSaveSize() const { return VarArgsRegSaveSize; }
+  void setVarArgsRegSaveSize(unsigned s) { VarArgsRegSaveSize = s; }
+
+  bool isFramePtrSpilled() const { return FramePtrSpilled; }
+  void setFramePtrSpilled(bool s) { FramePtrSpilled = s; }
+  unsigned getFramePtrSpillOffset() const { return FramePtrSpillOffset; }
+  void setFramePtrSpillOffset(unsigned o) { FramePtrSpillOffset = o; }
+  
+  unsigned getGPRCalleeSavedArea1Offset() const { return GPRCS1Offset; }
+  unsigned getGPRCalleeSavedArea2Offset() const { return GPRCS2Offset; }
+  unsigned getDPRCalleeSavedAreaOffset()  const { return DPRCSOffset; }
+
+  void setGPRCalleeSavedArea1Offset(unsigned o) { GPRCS1Offset = o; }
+  void setGPRCalleeSavedArea2Offset(unsigned o) { GPRCS2Offset = o; }
+  void setDPRCalleeSavedAreaOffset(unsigned o)  { DPRCSOffset = o; }
+
+  unsigned getGPRCalleeSavedArea1Size() const { return GPRCS1Size; }
+  unsigned getGPRCalleeSavedArea2Size() const { return GPRCS2Size; }
+  unsigned getDPRCalleeSavedAreaSize()  const { return DPRCSSize; }
+
+  void setGPRCalleeSavedArea1Size(unsigned s) { GPRCS1Size = s; }
+  void setGPRCalleeSavedArea2Size(unsigned s) { GPRCS2Size = s; }
+  void setDPRCalleeSavedAreaSize(unsigned s)  { DPRCSSize = s; }
+
+  bool isGPRCalleeSavedArea1Frame(unsigned fi) const {
+    return GPRCS1Frames.count(fi);
+  }
+  bool isGPRCalleeSavedArea2Frame(unsigned fi) const {
+    return GPRCS2Frames.count(fi);
+  }
+  bool isDPRCalleeSavedAreaFrame(unsigned fi) const {
+    return DPRCSFrames.count(fi);
+  }
+
+  void addGPRCalleeSavedArea1Frame(unsigned fi) {
+    GPRCS1Frames.insert(fi);
+  }
+  void addGPRCalleeSavedArea2Frame(unsigned fi) {
+    GPRCS2Frames.insert(fi);
+  }
+  void addDPRCalleeSavedAreaFrame(unsigned fi) {
+    DPRCSFrames.insert(fi);
+  }
+
+  unsigned createJumpTableUId() {
+    return JumpTableUId++;
+  }
+};
+} // End llvm namespace
+
+#endif // ARMMACHINEFUNCTIONINFO_H