lib/Target/MSP430/MSP430ISelLowering.h

   1 //==-- MSP430ISelLowering.h - MSP430 DAG Lowering Interface ------*- C++ -*-==//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file defines the interfaces that MSP430 uses to lower LLVM code into a
  11 // selection DAG.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef LLVM_TARGET_MSP430_ISELLOWERING_H
  16 #define LLVM_TARGET_MSP430_ISELLOWERING_H
  17
  18 #include "MSP430.h"
  19 #include "llvm/CodeGen/SelectionDAG.h"
  20 #include "llvm/Target/TargetLowering.h"
  21
  22 namespace llvm {
  23   namespace MSP430ISD {
  24     enum {
  25       FIRST_NUMBER = ISD::BUILTIN_OP_END,
  26
  27       /// Return with a flag operand. Operand 0 is the chain operand.
  28       RET_FLAG,
  29
  30       /// Y = RRA X, rotate right arithmetically
  31       RRA,
  32
  33       /// CALL/TAILCALL - These operations represent an abstract call
  34       /// instruction, which includes a bunch of information.
  35       CALL,
  36
  37       /// Wrapper - A wrapper node for TargetConstantPool, TargetExternalSymbol,
  38       /// and TargetGlobalAddress.
  39       Wrapper
  40     };
  41   }
  42
  43   class MSP430Subtarget;
  44   class MSP430TargetMachine;
  45
  46   class MSP430TargetLowering : public TargetLowering {
  47   public:
  48     explicit MSP430TargetLowering(MSP430TargetMachine &TM);
  49
  50     /// LowerOperation - Provide custom lowering hooks for some operations.
  51     virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
  52
  53     /// getTargetNodeName - This method returns the name of a target specific
  54     /// DAG node.
  55     virtual const char *getTargetNodeName(unsigned Opcode) const;
  56
  57     SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG);
  58     SDValue LowerCALL(SDValue Op, SelectionDAG &DAG);
  59     SDValue LowerRET(SDValue Op, SelectionDAG &DAG);
  60     SDValue LowerCCCArguments(SDValue Op, SelectionDAG &DAG);
  61     SDValue LowerShifts(SDValue Op, SelectionDAG &DAG);
  62     SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG);
  63
  64     SDValue LowerCCCCallTo(SDValue Op, SelectionDAG &DAG,
  65                            unsigned CC);
  66     SDNode* LowerCallResult(SDValue Chain, SDValue InFlag,
  67                             CallSDNode *TheCall,
  68                             unsigned CallingConv, SelectionDAG &DAG);
  69
  70
  71   private:
  72     const MSP430Subtarget &Subtarget;
  73     const MSP430TargetMachine &TM;
  74   };
  75 } // namespace llvm
  76
  77 #endif // LLVM_TARGET_MSP430_ISELLOWERING_H