lib/Target/RISCV/RISCVInstrInfo.h

   1 //===-- RISCVInstrInfo.h - RISCV 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 RISCV implementation of the TargetInstrInfo class.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_LIB_TARGET_RISCV_RISCVINSTRINFO_H
  14 #define LLVM_LIB_TARGET_RISCV_RISCVINSTRINFO_H
  15
  16 #include "RISCVRegisterInfo.h"
  17 #include "llvm/CodeGen/TargetInstrInfo.h"
  18
  19 #define GET_INSTRINFO_HEADER
  20 #include "RISCVGenInstrInfo.inc"
  21
  22 namespace llvm {
  23
  24 class RISCVInstrInfo : public RISCVGenInstrInfo {
  25
  26 public:
  27   RISCVInstrInfo();
  28
  29   unsigned isLoadFromStackSlot(const MachineInstr &MI,
  30                                int &FrameIndex) const override;
  31   unsigned isStoreToStackSlot(const MachineInstr &MI,
  32                               int &FrameIndex) const override;
  33
  34   void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
  35                    const DebugLoc &DL, unsigned DstReg, unsigned SrcReg,
  36                    bool KillSrc) 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 DstReg,
  46                             int FrameIndex, const TargetRegisterClass *RC,
  47                             const TargetRegisterInfo *TRI) const override;
  48
  49   // Materializes the given int32 Val into DstReg.
  50   void movImm32(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
  51                 const DebugLoc &DL, unsigned DstReg, uint64_t Val,
  52                 MachineInstr::MIFlag Flag = MachineInstr::NoFlags) const;
  53
  54   unsigned getInstSizeInBytes(const MachineInstr &MI) const override;
  55
  56   bool analyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
  57                      MachineBasicBlock *&FBB,
  58                      SmallVectorImpl<MachineOperand> &Cond,
  59                      bool AllowModify) const override;
  60
  61   unsigned insertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
  62                         MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond,
  63                         const DebugLoc &dl,
  64                         int *BytesAdded = nullptr) const override;
  65
  66   unsigned insertIndirectBranch(MachineBasicBlock &MBB,
  67                                 MachineBasicBlock &NewDestBB,
  68                                 const DebugLoc &DL, int64_t BrOffset,
  69                                 RegScavenger *RS = nullptr) const override;
  70
  71   unsigned removeBranch(MachineBasicBlock &MBB,
  72                         int *BytesRemoved = nullptr) const override;
  73
  74   bool
  75   reverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const override;
  76
  77   MachineBasicBlock *getBranchDestBlock(const MachineInstr &MI) const override;
  78
  79   bool isBranchOffsetInRange(unsigned BranchOpc,
  80                              int64_t BrOffset) const override;
  81
  82   bool isAsCheapAsAMove(const MachineInstr &MI) const override;
  83 };
  84 }
  85 #endif