1 //===-- MipsSEInstrInfo.h - Mips32/64 Instruction Information ---*- 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 // This file contains the Mips32/64 implementation of the TargetInstrInfo class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef MIPSSEINSTRUCTIONINFO_H 15 #define MIPSSEINSTRUCTIONINFO_H 16 17 #include "MipsInstrInfo.h" 18 #include "MipsSERegisterInfo.h" 19 20 namespace llvm { 21 22 class MipsSEInstrInfo : public MipsInstrInfo { 23 const MipsSERegisterInfo RI; 24 bool IsN64; 25 26 public: 27 explicit MipsSEInstrInfo(MipsTargetMachine &TM); 28 29 const MipsRegisterInfo &getRegisterInfo() const override; 30 31 /// isLoadFromStackSlot - If the specified machine instruction is a direct 32 /// load from a stack slot, return the virtual or physical register number of 33 /// the destination along with the FrameIndex of the loaded stack slot. If 34 /// not, return 0. This predicate must return 0 if the instruction has 35 /// any side effects other than loading from the stack slot. 36 unsigned isLoadFromStackSlot(const MachineInstr *MI, 37 int &FrameIndex) const override; 38 39 /// isStoreToStackSlot - If the specified machine instruction is a direct 40 /// store to a stack slot, return the virtual or physical register number of 41 /// the source reg along with the FrameIndex of the loaded stack slot. If 42 /// not, return 0. This predicate must return 0 if the instruction has 43 /// any side effects other than storing to the stack slot. 44 unsigned isStoreToStackSlot(const MachineInstr *MI, 45 int &FrameIndex) const override; 46 47 void copyPhysReg(MachineBasicBlock &MBB, 48 MachineBasicBlock::iterator MI, DebugLoc DL, 49 unsigned DestReg, unsigned SrcReg, 50 bool KillSrc) const override; 51 52 void storeRegToStack(MachineBasicBlock &MBB, 53 MachineBasicBlock::iterator MI, 54 unsigned SrcReg, bool isKill, int FrameIndex, 55 const TargetRegisterClass *RC, 56 const TargetRegisterInfo *TRI, 57 int64_t Offset) const override; 58 59 void loadRegFromStack(MachineBasicBlock &MBB, 60 MachineBasicBlock::iterator MI, 61 unsigned DestReg, int FrameIndex, 62 const TargetRegisterClass *RC, 63 const TargetRegisterInfo *TRI, 64 int64_t Offset) const override; 65 66 bool expandPostRAPseudo(MachineBasicBlock::iterator MI) const override; 67 68 unsigned getOppositeBranchOpc(unsigned Opc) const override; 69 70 /// Adjust SP by Amount bytes. 71 void adjustStackPtr(unsigned SP, int64_t Amount, MachineBasicBlock &MBB, 72 MachineBasicBlock::iterator I) const; 73 74 /// Emit a series of instructions to load an immediate. If NewImm is a 75 /// non-NULL parameter, the last instruction is not emitted, but instead 76 /// its immediate operand is returned in NewImm. 77 unsigned loadImmediate(int64_t Imm, MachineBasicBlock &MBB, 78 MachineBasicBlock::iterator II, DebugLoc DL, 79 unsigned *NewImm) const; 80 81 private: 82 unsigned getAnalyzableBrOpc(unsigned Opc) const override; 83 84 void expandRetRA(MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const; 85 86 std::pair<bool, bool> compareOpndSize(unsigned Opc, 87 const MachineFunction &MF) const; 88 89 void expandPseudoMFHiLo(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, 90 unsigned NewOpc) const; 91 92 void expandPseudoMTLoHi(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, 93 unsigned LoOpc, unsigned HiOpc, 94 bool HasExplicitDef) const; 95 96 /// Expand pseudo Int-to-FP conversion instructions. 97 /// 98 /// For example, the following pseudo instruction 99 /// PseudoCVT_D32_W D2, A5 100 /// gets expanded into these two instructions: 101 /// MTC1 F4, A5 102 /// CVT_D32_W D2, F4 103 /// 104 /// We do this expansion post-RA to avoid inserting a floating point copy 105 /// instruction between MTC1 and CVT_D32_W. 106 void expandCvtFPInt(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, 107 unsigned CvtOpc, unsigned MovOpc, bool IsI64) const; 108 109 void expandExtractElementF64(MachineBasicBlock &MBB, 110 MachineBasicBlock::iterator I, bool FP64) const; 111 void expandBuildPairF64(MachineBasicBlock &MBB, 112 MachineBasicBlock::iterator I, bool FP64) const; 113 void expandEhReturn(MachineBasicBlock &MBB, 114 MachineBasicBlock::iterator I) const; 115 }; 116 117 } 118 119 #endif 120
