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diff --git a/lib/Target/MSP430/MSP430ISelLowering.h b/lib/Target/MSP430/MSP430ISelLowering.h
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+++ b/lib/Target/MSP430/MSP430ISelLowering.h
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+//==-- MSP430ISelLowering.h - MSP430 DAG Lowering Interface ------*- C++ -*-==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the interfaces that MSP430 uses to lower LLVM code into a
+// selection DAG.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TARGET_MSP430_ISELLOWERING_H
+#define LLVM_TARGET_MSP430_ISELLOWERING_H
+
+#include "MSP430.h"
+#include "llvm/CodeGen/SelectionDAG.h"
+#include "llvm/Target/TargetLowering.h"
+
+namespace llvm {
+  namespace MSP430ISD {
+    enum {
+      FIRST_NUMBER = ISD::BUILTIN_OP_END,
+
+      /// Return with a flag operand. Operand 0 is the chain operand.
+      RET_FLAG,
+
+      /// Y = R{R,L}A X, rotate right (left) arithmetically
+      RRA, RLA,
+
+      /// Y = RRC X, rotate right via carry
+      RRC,
+
+      /// CALL/TAILCALL - These operations represent an abstract call
+      /// instruction, which includes a bunch of information.
+      CALL,
+
+      /// Wrapper - A wrapper node for TargetConstantPool, TargetExternalSymbol,
+      /// and TargetGlobalAddress.
+      Wrapper,
+
+      /// CMP - Compare instruction.
+      CMP,
+
+      /// SetCC. Operand 0 is condition code, and operand 1 is the flag
+      /// operand produced by a CMP instruction.
+      SETCC,
+
+      /// MSP430 conditional branches. Operand 0 is the chain operand, operand 1
+      /// is the block to branch if condition is true, operand 2 is the
+      /// condition code, and operand 3 is the flag operand produced by a CMP
+      /// instruction.
+      BR_CC,
+
+      /// SELECT_CC. Operand 0 and operand 1 are selection variable, operand 3
+      /// is condition code and operand 4 is flag operand.
+      SELECT_CC
+    };
+  }
+
+  class MSP430Subtarget;
+  class MSP430TargetMachine;
+
+  class MSP430TargetLowering : public TargetLowering {
+  public:
+    explicit MSP430TargetLowering(MSP430TargetMachine &TM);
+
+    /// LowerOperation - Provide custom lowering hooks for some operations.
+    virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
+
+    /// getTargetNodeName - This method returns the name of a target specific
+    /// DAG node.
+    virtual const char *getTargetNodeName(unsigned Opcode) const;
+
+    SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerCALL(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerRET(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerCCCArguments(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerShifts(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerExternalSymbol(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG);
+    SDValue LowerSIGN_EXTEND(SDValue Op, SelectionDAG &DAG);
+
+    SDValue LowerCCCCallTo(SDValue Op, SelectionDAG &DAG,
+                           unsigned CC);
+    SDNode* LowerCallResult(SDValue Chain, SDValue InFlag,
+                            CallSDNode *TheCall,
+                            unsigned CallingConv, SelectionDAG &DAG);
+
+    MachineBasicBlock* EmitInstrWithCustomInserter(MachineInstr *MI,
+                                                   MachineBasicBlock *BB) const;
+
+  private:
+    const MSP430Subtarget &Subtarget;
+    const MSP430TargetMachine &TM;
+  };
+} // namespace llvm
+
+#endif // LLVM_TARGET_MSP430_ISELLOWERING_H