lib/Target/Mips/MipsMCInstLower.h

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