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, SDLoc DL,
25 SDValue Chain, unsigned Offset) const;
26 SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
27 SDValue LowerSIGN_EXTEND(SDValue Op, SelectionDAG &DAG) const;
28 SDValue LowerBRCOND(SDValue Op, SelectionDAG &DAG) const;
30 bool foldImm(SDValue &Operand, int32_t &Immediate,
31 bool &ScalarSlotUsed) const;
32 bool fitsRegClass(SelectionDAG &DAG, const SDValue &Op,
33 unsigned RegClass) const;
34 void ensureSRegLimit(SelectionDAG &DAG, SDValue &Operand,
35 unsigned RegClass, bool &ScalarSlotUsed) const;
37 SDNode *foldOperands(MachineSDNode *N, SelectionDAG &DAG) const;
38 void adjustWritemask(MachineSDNode *&N, SelectionDAG &DAG) const;
39 MachineSDNode *AdjustRegClass(MachineSDNode *N, SelectionDAG &DAG) const;
42 SITargetLowering(TargetMachine &tm);
44 SDValue LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv,
46 const SmallVectorImpl<ISD::InputArg> &Ins,
47 SDLoc DL, SelectionDAG &DAG,
48 SmallVectorImpl<SDValue> &InVals) const;
50 virtual MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr * MI,
51 MachineBasicBlock * BB) const;
52 virtual EVT getSetCCResultType(LLVMContext &Context, EVT VT) const;
53 virtual MVT getScalarShiftAmountTy(EVT VT) const;
54 virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
55 virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
56 virtual SDNode *PostISelFolding(MachineSDNode *N, SelectionDAG &DAG) const;
57 virtual void AdjustInstrPostInstrSelection(MachineInstr *MI,
60 int32_t analyzeImmediate(const SDNode *N) const;
61 SDValue CreateLiveInRegister(SelectionDAG &DAG, const TargetRegisterClass *RC,
62 unsigned Reg, EVT VT) const;
65 } // End namespace llvm
67 #endif //SIISELLOWERING_H