1 //===-- R600ISelLowering.h - R600 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 R600 DAG Lowering interface definition 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef R600ISELLOWERING_H 16 #define R600ISELLOWERING_H 17 18 #include "AMDGPUISelLowering.h" 19 20 namespace llvm { 21 22 class R600InstrInfo; 23 24 class R600TargetLowering : public AMDGPUTargetLowering { 25 public: 26 R600TargetLowering(TargetMachine &TM); 27 virtual MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr *MI, 28 MachineBasicBlock * BB) const; 29 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const; 30 virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const; 31 void ReplaceNodeResults(SDNode * N, 32 SmallVectorImpl<SDValue> &Results, 33 SelectionDAG &DAG) const; 34 virtual SDValue LowerFormalArguments( 35 SDValue Chain, 36 CallingConv::ID CallConv, 37 bool isVarArg, 38 const SmallVectorImpl<ISD::InputArg> &Ins, 39 DebugLoc DL, SelectionDAG &DAG, 40 SmallVectorImpl<SDValue> &InVals) const; 41 virtual EVT getSetCCResultType(EVT VT) const; 42 private: 43 const R600InstrInfo * TII; 44 45 /// Each OpenCL kernel has nine implicit parameters that are stored in the 46 /// first nine dwords of a Vertex Buffer. These implicit parameters are 47 /// lowered to load instructions which retreive the values from the Vertex 48 /// Buffer. 49 SDValue LowerImplicitParameter(SelectionDAG &DAG, EVT VT, 50 DebugLoc DL, unsigned DwordOffset) const; 51 52 void lowerImplicitParameter(MachineInstr *MI, MachineBasicBlock &BB, 53 MachineRegisterInfo & MRI, unsigned dword_offset) const; 54 55 /// \brief Lower ROTL opcode to BITALIGN 56 SDValue LowerROTL(SDValue Op, SelectionDAG &DAG) const; 57 58 SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const; 59 SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const; 60 SDValue LowerSTORE(SDValue Op, SelectionDAG &DAG) const; 61 SDValue LowerFPTOUINT(SDValue Op, SelectionDAG &DAG) const; 62 SDValue LowerFPOW(SDValue Op, SelectionDAG &DAG) const; 63 SDValue LowerLOAD(SDValue Op, SelectionDAG &DAG) const; 64 SDValue LowerFrameIndex(SDValue Op, SelectionDAG &DAG) const; 65 66 SDValue stackPtrToRegIndex(SDValue Ptr, unsigned StackWidth, 67 SelectionDAG &DAG) const; 68 void getStackAddress(unsigned StackWidth, unsigned ElemIdx, 69 unsigned &Channel, unsigned &PtrIncr) const; 70 bool isZero(SDValue Op) const; 71 }; 72 73 } // End namespace llvm; 74 75 #endif // R600ISELLOWERING_H 76
