1 //===-- SIISelLowering.h - SI 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 /// \file 11 /// \brief SI DAG Lowering interface definition 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef SIISELLOWERING_H 16 #define SIISELLOWERING_H 17 18 #include "AMDGPUISelLowering.h" 19 #include "SIInstrInfo.h" 20 21 namespace llvm { 22 23 class SITargetLowering : public AMDGPUTargetLowering { 24 const SIInstrInfo * TII; 25 const TargetRegisterInfo * TRI; 26 27 void LowerSI_WQM(MachineInstr *MI, MachineBasicBlock &BB, 28 MachineBasicBlock::iterator I, MachineRegisterInfo & MRI) const; 29 30 SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const; 31 SDValue LowerBRCOND(SDValue Op, SelectionDAG &DAG) const; 32 33 bool foldImm(SDValue &Operand, int32_t &Immediate, 34 bool &ScalarSlotUsed) const; 35 bool fitsRegClass(SelectionDAG &DAG, SDValue &Op, unsigned RegClass) const; 36 void ensureSRegLimit(SelectionDAG &DAG, SDValue &Operand, 37 unsigned RegClass, bool &ScalarSlotUsed) const; 38 39 public: 40 SITargetLowering(TargetMachine &tm); 41 42 SDValue LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv, 43 bool isVarArg, 44 const SmallVectorImpl<ISD::InputArg> &Ins, 45 DebugLoc DL, SelectionDAG &DAG, 46 SmallVectorImpl<SDValue> &InVals) const; 47 48 virtual MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr * MI, 49 MachineBasicBlock * BB) const; 50 virtual EVT getSetCCResultType(EVT VT) const; 51 virtual MVT getScalarShiftAmountTy(EVT VT) const; 52 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const; 53 virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const; 54 virtual SDNode *PostISelFolding(MachineSDNode *N, SelectionDAG &DAG) const; 55 56 int32_t analyzeImmediate(const SDNode *N) const; 57 }; 58 59 } // End namespace llvm 60 61 #endif //SIISELLOWERING_H 62
