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