lib/Target/Mips/MipsMCInstLower.h

   1 //===- MipsMCInstLower.h - Lower MachineInstr to MCInst --------*- 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 #ifndef LLVM_LIB_TARGET_MIPS_MIPSMCINSTLOWER_H
  10 #define LLVM_LIB_TARGET_MIPS_MIPSMCINSTLOWER_H
  11
  12 #include "MCTargetDesc/MipsMCExpr.h"
  13 #include "llvm/CodeGen/MachineOperand.h"
  14 #include "llvm/Support/Compiler.h"
  15
  16 namespace llvm {
  17
  18 class MachineBasicBlock;
  19 class MachineInstr;
  20 class MCContext;
  21 class MCInst;
  22 class MCOperand;
  23 class MipsAsmPrinter;
  24
  25 /// MipsMCInstLower - This class is used to lower an MachineInstr into an
  26 ///                   MCInst.
  27 class LLVM_LIBRARY_VISIBILITY MipsMCInstLower {
  28   using MachineOperandType = MachineOperand::MachineOperandType;
  29
  30   MCContext *Ctx;
  31   MipsAsmPrinter &AsmPrinter;
  32
  33 public:
  34   MipsMCInstLower(MipsAsmPrinter &asmprinter);
  35
  36   void Initialize(MCContext *C);
  37   void Lower(const MachineInstr *MI, MCInst &OutMI) const;
  38   MCOperand LowerOperand(const MachineOperand& MO, unsigned offset = 0) const;
  39
  40 private:
  41   MCOperand LowerSymbolOperand(const MachineOperand &MO,
  42                                MachineOperandType MOTy, unsigned Offset) const;
  43   MCOperand createSub(MachineBasicBlock *BB1, MachineBasicBlock *BB2,
  44                       MipsMCExpr::MipsExprKind Kind) const;
  45   void lowerLongBranchLUi(const MachineInstr *MI, MCInst &OutMI) const;
  46   void lowerLongBranchADDiu(const MachineInstr *MI, MCInst &OutMI,
  47                             int Opcode) const;
  48   bool lowerLongBranch(const MachineInstr *MI, MCInst &OutMI) const;
  49 };
  50
  51 } // end namespace llvm
  52
  53 #endif // LLVM_LIB_TARGET_MIPS_MIPSMCINSTLOWER_H