lib/Target/BPF/BPFInstrInfo.h

   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
  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