| //==-- 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 - 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; |
| |
| /// getFunctionAlignment - Return the Log2 alignment of this function. |
| virtual unsigned getFunctionAlignment(const Function *F) const; |
| |
| 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); |
| |
| MachineBasicBlock* EmitInstrWithCustomInserter(MachineInstr *MI, |
| MachineBasicBlock *BB) const; |
| |
| private: |
| SDValue LowerCCCCallTo(SDValue Chain, SDValue Callee, |
| unsigned CallConv, bool isVarArg, |
| bool isTailCall, |
| const SmallVectorImpl<ISD::OutputArg> &Outs, |
| const SmallVectorImpl<ISD::InputArg> &Ins, |
| DebugLoc dl, SelectionDAG &DAG, |
| SmallVectorImpl<SDValue> &InVals); |
| |
| SDValue LowerCCCArguments(SDValue Chain, |
| unsigned CallConv, |
| bool isVarArg, |
| const SmallVectorImpl<ISD::InputArg> &Ins, |
| DebugLoc dl, |
| SelectionDAG &DAG, |
| SmallVectorImpl<SDValue> &InVals); |
| |
| SDValue LowerCallResult(SDValue Chain, SDValue InFlag, |
| unsigned CallConv, bool isVarArg, |
| const SmallVectorImpl<ISD::InputArg> &Ins, |
| DebugLoc dl, SelectionDAG &DAG, |
| SmallVectorImpl<SDValue> &InVals); |
| |
| virtual SDValue |
| LowerFormalArguments(SDValue Chain, |
| unsigned CallConv, bool isVarArg, |
| const SmallVectorImpl<ISD::InputArg> &Ins, |
| DebugLoc dl, SelectionDAG &DAG, |
| SmallVectorImpl<SDValue> &InVals); |
| virtual SDValue |
| LowerCall(SDValue Chain, SDValue Callee, |
| unsigned CallConv, bool isVarArg, bool isTailCall, |
| const SmallVectorImpl<ISD::OutputArg> &Outs, |
| const SmallVectorImpl<ISD::InputArg> &Ins, |
| DebugLoc dl, SelectionDAG &DAG, |
| SmallVectorImpl<SDValue> &InVals); |
| |
| virtual SDValue |
| LowerReturn(SDValue Chain, |
| unsigned CallConv, bool isVarArg, |
| const SmallVectorImpl<ISD::OutputArg> &Outs, |
| DebugLoc dl, SelectionDAG &DAG); |
| |
| const MSP430Subtarget &Subtarget; |
| const MSP430TargetMachine &TM; |
| }; |
| } // namespace llvm |
| |
| #endif // LLVM_TARGET_MSP430_ISELLOWERING_H |