1 //===-- BPFInstrInfo.h - BPF Instruction Information ------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file contains the BPF implementation of the TargetInstrInfo class. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_BPF_BPFINSTRINFO_H 14 #define LLVM_LIB_TARGET_BPF_BPFINSTRINFO_H 15 16 #include "BPFRegisterInfo.h" 17 #include "llvm/CodeGen/TargetInstrInfo.h" 18 19 #define GET_INSTRINFO_HEADER 20 #include "BPFGenInstrInfo.inc" 21 22 namespace llvm { 23 24 class BPFInstrInfo : public BPFGenInstrInfo { 25 const BPFRegisterInfo RI; 26 27 public: 28 BPFInstrInfo(); 29 30 const BPFRegisterInfo &getRegisterInfo() const { return RI; } 31 32 void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, 33 const DebugLoc &DL, MCRegister DestReg, MCRegister SrcReg, 34 bool KillSrc) const override; 35 36 bool expandPostRAPseudo(MachineInstr &MI) const override; 37 38 void storeRegToStackSlot(MachineBasicBlock &MBB, 39 MachineBasicBlock::iterator MBBI, Register SrcReg, 40 bool isKill, int FrameIndex, 41 const TargetRegisterClass *RC, 42 const TargetRegisterInfo *TRI, 43 Register VReg) const override; 44 45 void loadRegFromStackSlot(MachineBasicBlock &MBB, 46 MachineBasicBlock::iterator MBBI, Register DestReg, 47 int FrameIndex, const TargetRegisterClass *RC, 48 const TargetRegisterInfo *TRI, 49 Register VReg) const override; 50 bool analyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, 51 MachineBasicBlock *&FBB, 52 SmallVectorImpl<MachineOperand> &Cond, 53 bool AllowModify) const override; 54 55 unsigned removeBranch(MachineBasicBlock &MBB, 56 int *BytesRemoved = nullptr) const override; 57 unsigned insertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, 58 MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond, 59 const DebugLoc &DL, 60 int *BytesAdded = nullptr) const override; 61 private: 62 void expandMEMCPY(MachineBasicBlock::iterator) const; 63 64 }; 65 } 66 67 #endif 68