1 //===-- MipsSEISelDAGToDAG.h - A Dag to Dag Inst Selector for MipsSE -----===// 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 // Subclass of MipsDAGToDAGISel specialized for mips32/64. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef MIPSSEISELDAGTODAG_H 15 #define MIPSSEISELDAGTODAG_H 16 17 #include "MipsISelDAGToDAG.h" 18 19 namespace llvm { 20 21 class MipsSEDAGToDAGISel : public MipsDAGToDAGISel { 22 23 public: MipsSEDAGToDAGISel(MipsTargetMachine & TM)24 explicit MipsSEDAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {} 25 26 private: 27 28 bool runOnMachineFunction(MachineFunction &MF) override; 29 30 void addDSPCtrlRegOperands(bool IsDef, MachineInstr &MI, 31 MachineFunction &MF); 32 33 unsigned getMSACtrlReg(const SDValue RegIdx) const; 34 35 bool replaceUsesWithZeroReg(MachineRegisterInfo *MRI, const MachineInstr&); 36 37 std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, SDLoc dl, 38 EVT Ty, bool HasLo, bool HasHi); 39 40 SDNode *selectAddESubE(unsigned MOp, SDValue InFlag, SDValue CmpLHS, 41 SDLoc DL, SDNode *Node) const; 42 43 bool selectAddrFrameIndex(SDValue Addr, SDValue &Base, SDValue &Offset) const; 44 bool selectAddrFrameIndexOffset(SDValue Addr, SDValue &Base, SDValue &Offset, 45 unsigned OffsetBits) const; 46 47 bool selectAddrRegImm(SDValue Addr, SDValue &Base, 48 SDValue &Offset) const override; 49 50 bool selectAddrRegReg(SDValue Addr, SDValue &Base, 51 SDValue &Offset) const override; 52 53 bool selectAddrDefault(SDValue Addr, SDValue &Base, 54 SDValue &Offset) const override; 55 56 bool selectIntAddr(SDValue Addr, SDValue &Base, 57 SDValue &Offset) const override; 58 59 bool selectAddrRegImm10(SDValue Addr, SDValue &Base, 60 SDValue &Offset) const; 61 62 bool selectAddrRegImm12(SDValue Addr, SDValue &Base, 63 SDValue &Offset) const; 64 65 bool selectIntAddrMM(SDValue Addr, SDValue &Base, 66 SDValue &Offset) const override; 67 68 bool selectIntAddrMSA(SDValue Addr, SDValue &Base, 69 SDValue &Offset) const override; 70 71 /// \brief Select constant vector splats. 72 bool selectVSplat(SDNode *N, APInt &Imm) const override; 73 /// \brief Select constant vector splats whose value fits in a given integer. 74 bool selectVSplatCommon(SDValue N, SDValue &Imm, bool Signed, 75 unsigned ImmBitSize) const; 76 /// \brief Select constant vector splats whose value fits in a uimm1. 77 bool selectVSplatUimm1(SDValue N, SDValue &Imm) const override; 78 /// \brief Select constant vector splats whose value fits in a uimm2. 79 bool selectVSplatUimm2(SDValue N, SDValue &Imm) const override; 80 /// \brief Select constant vector splats whose value fits in a uimm3. 81 bool selectVSplatUimm3(SDValue N, SDValue &Imm) const override; 82 /// \brief Select constant vector splats whose value fits in a uimm4. 83 bool selectVSplatUimm4(SDValue N, SDValue &Imm) const override; 84 /// \brief Select constant vector splats whose value fits in a uimm5. 85 bool selectVSplatUimm5(SDValue N, SDValue &Imm) const override; 86 /// \brief Select constant vector splats whose value fits in a uimm6. 87 bool selectVSplatUimm6(SDValue N, SDValue &Imm) const override; 88 /// \brief Select constant vector splats whose value fits in a uimm8. 89 bool selectVSplatUimm8(SDValue N, SDValue &Imm) const override; 90 /// \brief Select constant vector splats whose value fits in a simm5. 91 bool selectVSplatSimm5(SDValue N, SDValue &Imm) const override; 92 /// \brief Select constant vector splats whose value is a power of 2. 93 bool selectVSplatUimmPow2(SDValue N, SDValue &Imm) const override; 94 /// \brief Select constant vector splats whose value is the inverse of a 95 /// power of 2. 96 bool selectVSplatUimmInvPow2(SDValue N, SDValue &Imm) const override; 97 /// \brief Select constant vector splats whose value is a run of set bits 98 /// ending at the most significant bit 99 bool selectVSplatMaskL(SDValue N, SDValue &Imm) const override; 100 /// \brief Select constant vector splats whose value is a run of set bits 101 /// starting at bit zero. 102 bool selectVSplatMaskR(SDValue N, SDValue &Imm) const override; 103 104 std::pair<bool, SDNode*> selectNode(SDNode *Node) override; 105 106 void processFunctionAfterISel(MachineFunction &MF) override; 107 108 // Insert instructions to initialize the global base register in the 109 // first MBB of the function. 110 void initGlobalBaseReg(MachineFunction &MF); 111 }; 112 113 FunctionPass *createMipsSEISelDag(MipsTargetMachine &TM); 114 115 } 116 117 #endif 118