1 //===-- BPFInstrInfo.h - BPF 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 BPF implementation of the TargetInstrInfo class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_BPF_BPFINSTRINFO_H 15 #define LLVM_LIB_TARGET_BPF_BPFINSTRINFO_H 16 17 #include "BPFRegisterInfo.h" 18 #include "llvm/CodeGen/TargetInstrInfo.h" 19 20 #define GET_INSTRINFO_HEADER 21 #include "BPFGenInstrInfo.inc" 22 23 namespace llvm { 24 25 class BPFInstrInfo : public BPFGenInstrInfo { 26 const BPFRegisterInfo RI; 27 28 public: 29 BPFInstrInfo(); 30 getRegisterInfo()31 const BPFRegisterInfo &getRegisterInfo() const { return RI; } 32 33 void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, 34 const DebugLoc &DL, unsigned DestReg, unsigned SrcReg, 35 bool KillSrc) const override; 36 37 bool expandPostRAPseudo(MachineInstr &MI) const override; 38 39 void storeRegToStackSlot(MachineBasicBlock &MBB, 40 MachineBasicBlock::iterator MBBI, unsigned SrcReg, 41 bool isKill, int FrameIndex, 42 const TargetRegisterClass *RC, 43 const TargetRegisterInfo *TRI) const override; 44 45 void loadRegFromStackSlot(MachineBasicBlock &MBB, 46 MachineBasicBlock::iterator MBBI, unsigned DestReg, 47 int FrameIndex, const TargetRegisterClass *RC, 48 const TargetRegisterInfo *TRI) const override; 49 bool analyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, 50 MachineBasicBlock *&FBB, 51 SmallVectorImpl<MachineOperand> &Cond, 52 bool AllowModify) const override; 53 54 unsigned removeBranch(MachineBasicBlock &MBB, 55 int *BytesRemoved = nullptr) const override; 56 unsigned insertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, 57 MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond, 58 const DebugLoc &DL, 59 int *BytesAdded = nullptr) const override; 60 private: 61 void expandMEMCPY(MachineBasicBlock::iterator) const; 62 63 }; 64 } 65 66 #endif 67