llvm/lib/Target/MSP430/MSP430InstrInfo.h

   1 //===-- MSP430InstrInfo.h - MSP430 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 MSP430 implementation of the TargetInstrInfo class.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_LIB_TARGET_MSP430_MSP430INSTRINFO_H
  14 #define LLVM_LIB_TARGET_MSP430_MSP430INSTRINFO_H
  15
  16 #include "MSP430RegisterInfo.h"
  17 #include "llvm/CodeGen/TargetInstrInfo.h"
  18
  19 #define GET_INSTRINFO_HEADER
  20 #include "MSP430GenInstrInfo.inc"
  21
  22 namespace llvm {
  23
  24 class MSP430Subtarget;
  25
  26 class MSP430InstrInfo : public MSP430GenInstrInfo {
  27   const MSP430RegisterInfo RI;
  28   virtual void anchor();
  29 public:
  30   explicit MSP430InstrInfo(MSP430Subtarget &STI);
  31
  32   /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
  33   /// such, whenever a client has an instance of instruction info, it should
  34   /// always be able to get register info as well (through this method).
  35   ///
  36   const MSP430RegisterInfo &getRegisterInfo() const { return RI; }
  37
  38   void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
  39                    const DebugLoc &DL, MCRegister DestReg, MCRegister SrcReg,
  40                    bool KillSrc) const override;
  41
  42   void storeRegToStackSlot(MachineBasicBlock &MBB,
  43                            MachineBasicBlock::iterator MI, Register SrcReg,
  44                            bool isKill, int FrameIndex,
  45                            const TargetRegisterClass *RC,
  46                            const TargetRegisterInfo *TRI,
  47                            Register VReg) const override;
  48   void loadRegFromStackSlot(MachineBasicBlock &MBB,
  49                             MachineBasicBlock::iterator MI, Register DestReg,
  50                             int FrameIdx, const TargetRegisterClass *RC,
  51                             const TargetRegisterInfo *TRI,
  52                             Register VReg) const override;
  53
  54   unsigned getInstSizeInBytes(const MachineInstr &MI) const override;
  55
  56   // Branch folding goodness
  57   bool
  58   reverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const override;
  59   bool analyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
  60                      MachineBasicBlock *&FBB,
  61                      SmallVectorImpl<MachineOperand> &Cond,
  62                      bool AllowModify) const override;
  63
  64   unsigned removeBranch(MachineBasicBlock &MBB,
  65                         int *BytesRemoved = nullptr) const override;
  66   unsigned insertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
  67                         MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond,
  68                         const DebugLoc &DL,
  69                         int *BytesAdded = nullptr) const override;
  70
  71   int64_t getFramePoppedByCallee(const MachineInstr &I) const {
  72     assert(isFrameInstr(I) && "Not a frame instruction");
  73     assert(I.getOperand(1).getImm() >= 0 && "Size must not be negative");
  74     return I.getOperand(1).getImm();
  75   }
  76 };
  77
  78 }
  79
  80 #endif