1 //===-- SIISelLowering.h - SI DAG Lowering Interface ------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// \brief SI DAG Lowering interface definition
13 //===----------------------------------------------------------------------===//
15 #ifndef SIISELLOWERING_H
16 #define SIISELLOWERING_H
18 #include "AMDGPUISelLowering.h"
19 #include "SIInstrInfo.h"
23 class SITargetLowering : public AMDGPUTargetLowering {
24 SDValue LowerParameter(SelectionDAG &DAG, EVT VT, EVT MemVT, SDLoc DL,
25 SDValue Chain, unsigned Offset, bool Signed) const;
26 SDValue LowerSampleIntrinsic(unsigned Opcode, const SDValue &Op,
27 SelectionDAG &DAG) const;
28 SDValue LowerLOAD(SDValue Op, SelectionDAG &DAG) const;
29 SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const;
30 SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
31 SDValue LowerSIGN_EXTEND(SDValue Op, SelectionDAG &DAG) const;
32 SDValue LowerSTORE(SDValue Op, SelectionDAG &DAG) const;
33 SDValue LowerZERO_EXTEND(SDValue Op, SelectionDAG &DAG) const;
34 SDValue LowerBRCOND(SDValue Op, SelectionDAG &DAG) const;
36 bool foldImm(SDValue &Operand, int32_t &Immediate,
37 bool &ScalarSlotUsed) const;
38 const TargetRegisterClass *getRegClassForNode(SelectionDAG &DAG,
39 const SDValue &Op) const;
40 bool fitsRegClass(SelectionDAG &DAG, const SDValue &Op,
41 unsigned RegClass) const;
42 void ensureSRegLimit(SelectionDAG &DAG, SDValue &Operand,
43 unsigned RegClass, bool &ScalarSlotUsed) const;
45 SDNode *foldOperands(MachineSDNode *N, SelectionDAG &DAG) const;
46 void adjustWritemask(MachineSDNode *&N, SelectionDAG &DAG) const;
47 MachineSDNode *AdjustRegClass(MachineSDNode *N, SelectionDAG &DAG) const;
50 SITargetLowering(TargetMachine &tm);
51 bool allowsUnalignedMemoryAccesses(EVT VT, unsigned AS, bool *IsFast) const;
52 virtual bool shouldSplitVectorType(EVT VT) const override;
54 virtual bool shouldConvertConstantLoadToIntImm(const APInt &Imm,
55 Type *Ty) const override;
57 SDValue LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv,
59 const SmallVectorImpl<ISD::InputArg> &Ins,
60 SDLoc DL, SelectionDAG &DAG,
61 SmallVectorImpl<SDValue> &InVals) const;
63 virtual MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr * MI,
64 MachineBasicBlock * BB) const;
65 virtual EVT getSetCCResultType(LLVMContext &Context, EVT VT) const;
66 virtual MVT getScalarShiftAmountTy(EVT VT) const;
67 virtual bool isFMAFasterThanFMulAndFAdd(EVT VT) const;
68 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
69 virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
70 virtual SDNode *PostISelFolding(MachineSDNode *N, SelectionDAG &DAG) const;
71 virtual void AdjustInstrPostInstrSelection(MachineInstr *MI,
74 int32_t analyzeImmediate(const SDNode *N) const;
75 SDValue CreateLiveInRegister(SelectionDAG &DAG, const TargetRegisterClass *RC,
76 unsigned Reg, EVT VT) const;
79 } // End namespace llvm
81 #endif //SIISELLOWERING_H