lib/Target/BPF/BPFInstrInfo.h

   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, unsigned DestReg, unsigned SrcReg,
  34                    bool KillSrc) const override;
  35
  36   bool expandPostRAPseudo(MachineInstr &MI) const override;
  37
  38   void storeRegToStackSlot(MachineBasicBlock &MBB,
  39                            MachineBasicBlock::iterator MBBI, unsigned SrcReg,
  40                            bool isKill, int FrameIndex,
  41                            const TargetRegisterClass *RC,
  42                            const TargetRegisterInfo *TRI) const override;
  43
  44   void loadRegFromStackSlot(MachineBasicBlock &MBB,
  45                             MachineBasicBlock::iterator MBBI, unsigned DestReg,
  46                             int FrameIndex, const TargetRegisterClass *RC,
  47                             const TargetRegisterInfo *TRI) const override;
  48   bool analyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
  49                      MachineBasicBlock *&FBB,
  50                      SmallVectorImpl<MachineOperand> &Cond,
  51                      bool AllowModify) const override;
  52
  53   unsigned removeBranch(MachineBasicBlock &MBB,
  54                         int *BytesRemoved = nullptr) const override;
  55   unsigned insertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
  56                         MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond,
  57                         const DebugLoc &DL,
  58                         int *BytesAdded = nullptr) const override;
  59 private:
  60   void expandMEMCPY(MachineBasicBlock::iterator) const;
  61
  62 };
  63 }
  64
  65 #endif