SparcISelLowering.h revision 26932106562adbe3f186b8f32fd5057d9f373875
1//===-- SparcISelLowering.h - Sparc 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 Sparc uses to lower LLVM code into a 11// selection DAG. 12// 13//===----------------------------------------------------------------------===// 14 15#ifndef SPARC_ISELLOWERING_H 16#define SPARC_ISELLOWERING_H 17 18#include "Sparc.h" 19#include "llvm/Target/TargetLowering.h" 20 21namespace llvm { 22 class SparcSubtarget; 23 24 namespace SPISD { 25 enum { 26 FIRST_NUMBER = ISD::BUILTIN_OP_END, 27 CMPICC, // Compare two GPR operands, set icc+xcc. 28 CMPFCC, // Compare two FP operands, set fcc. 29 BRICC, // Branch to dest on icc condition 30 BRXCC, // Branch to dest on xcc condition (64-bit only). 31 BRFCC, // Branch to dest on fcc condition 32 SELECT_ICC, // Select between two values using the current ICC flags. 33 SELECT_XCC, // Select between two values using the current XCC flags. 34 SELECT_FCC, // Select between two values using the current FCC flags. 35 36 Hi, Lo, // Hi/Lo operations, typically on a global address. 37 38 FTOI, // FP to Int within a FP register. 39 ITOF, // Int to FP within a FP register. 40 41 CALL, // A call instruction. 42 RET_FLAG, // Return with a flag operand. 43 GLOBAL_BASE_REG, // Global base reg for PIC 44 FLUSHW // FLUSH register windows to stack 45 }; 46 } 47 48 class SparcTargetLowering : public TargetLowering { 49 const SparcSubtarget *Subtarget; 50 public: 51 SparcTargetLowering(TargetMachine &TM); 52 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const; 53 54 /// computeMaskedBitsForTargetNode - Determine which of the bits specified 55 /// in Mask are known to be either zero or one and return them in the 56 /// KnownZero/KnownOne bitsets. 57 virtual void computeMaskedBitsForTargetNode(const SDValue Op, 58 APInt &KnownZero, 59 APInt &KnownOne, 60 const SelectionDAG &DAG, 61 unsigned Depth = 0) const; 62 63 virtual MachineBasicBlock * 64 EmitInstrWithCustomInserter(MachineInstr *MI, 65 MachineBasicBlock *MBB) const; 66 67 virtual const char *getTargetNodeName(unsigned Opcode) const; 68 69 ConstraintType getConstraintType(const std::string &Constraint) const; 70 std::pair<unsigned, const TargetRegisterClass*> 71 getRegForInlineAsmConstraint(const std::string &Constraint, EVT VT) const; 72 73 virtual bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const; 74 75 virtual SDValue 76 LowerFormalArguments(SDValue Chain, 77 CallingConv::ID CallConv, 78 bool isVarArg, 79 const SmallVectorImpl<ISD::InputArg> &Ins, 80 DebugLoc dl, SelectionDAG &DAG, 81 SmallVectorImpl<SDValue> &InVals) const; 82 SDValue LowerFormalArguments_32(SDValue Chain, 83 CallingConv::ID CallConv, 84 bool isVarArg, 85 const SmallVectorImpl<ISD::InputArg> &Ins, 86 DebugLoc dl, SelectionDAG &DAG, 87 SmallVectorImpl<SDValue> &InVals) const; 88 SDValue LowerFormalArguments_64(SDValue Chain, 89 CallingConv::ID CallConv, 90 bool isVarArg, 91 const SmallVectorImpl<ISD::InputArg> &Ins, 92 DebugLoc dl, SelectionDAG &DAG, 93 SmallVectorImpl<SDValue> &InVals) const; 94 95 virtual SDValue 96 LowerCall(TargetLowering::CallLoweringInfo &CLI, 97 SmallVectorImpl<SDValue> &InVals) const; 98 SDValue LowerCall_32(TargetLowering::CallLoweringInfo &CLI, 99 SmallVectorImpl<SDValue> &InVals) const; 100 SDValue LowerCall_64(TargetLowering::CallLoweringInfo &CLI, 101 SmallVectorImpl<SDValue> &InVals) const; 102 103 virtual SDValue 104 LowerReturn(SDValue Chain, 105 CallingConv::ID CallConv, bool isVarArg, 106 const SmallVectorImpl<ISD::OutputArg> &Outs, 107 const SmallVectorImpl<SDValue> &OutVals, 108 DebugLoc dl, SelectionDAG &DAG) const; 109 SDValue LowerReturn_32(SDValue Chain, 110 CallingConv::ID CallConv, bool IsVarArg, 111 const SmallVectorImpl<ISD::OutputArg> &Outs, 112 const SmallVectorImpl<SDValue> &OutVals, 113 DebugLoc DL, SelectionDAG &DAG) const; 114 SDValue LowerReturn_64(SDValue Chain, 115 CallingConv::ID CallConv, bool IsVarArg, 116 const SmallVectorImpl<ISD::OutputArg> &Outs, 117 const SmallVectorImpl<SDValue> &OutVals, 118 DebugLoc DL, SelectionDAG &DAG) const; 119 120 SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const; 121 SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG) const; 122 123 unsigned getSRetArgSize(SelectionDAG &DAG, SDValue Callee) const; 124 SDValue withTargetFlags(SDValue Op, unsigned TF, SelectionDAG &DAG) const; 125 SDValue makeHiLoPair(SDValue Op, unsigned HiTF, unsigned LoTF, 126 SelectionDAG &DAG) const; 127 SDValue makeAddress(SDValue Op, SelectionDAG &DAG) const; 128 }; 129} // end namespace llvm 130 131#endif // SPARC_ISELLOWERING_H 132