Thumb2InstrInfo.h revision 198090 
1//===- Thumb2InstrInfo.h - Thumb-2 Instruction Information ----------*- 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// This file contains the Thumb-2 implementation of the TargetInstrInfo class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef THUMB2INSTRUCTIONINFO_H
15#define THUMB2INSTRUCTIONINFO_H
16
17#include "llvm/Target/TargetInstrInfo.h"
18#include "ARM.h"
19#include "ARMInstrInfo.h"
20#include "Thumb2RegisterInfo.h"
21
22namespace llvm {
23  class ARMSubtarget;
24
25class Thumb2InstrInfo : public ARMBaseInstrInfo {
26  Thumb2RegisterInfo RI;
27public:
28  explicit Thumb2InstrInfo(const ARMSubtarget &STI);
29
30  // Return the non-pre/post incrementing version of 'Opc'. Return 0
31  // if there is not such an opcode.
32  unsigned getUnindexedOpcode(unsigned Opc) const;
33
34  // Return true if the block does not fall through.
35  bool BlockHasNoFallThrough(const MachineBasicBlock &MBB) const;
36
37  bool copyRegToReg(MachineBasicBlock &MBB,
38                    MachineBasicBlock::iterator I,
39                    unsigned DestReg, unsigned SrcReg,
40                    const TargetRegisterClass *DestRC,
41                    const TargetRegisterClass *SrcRC) const;
42
43  void storeRegToStackSlot(MachineBasicBlock &MBB,
44                           MachineBasicBlock::iterator MBBI,
45                           unsigned SrcReg, bool isKill, int FrameIndex,
46                           const TargetRegisterClass *RC) const;
47
48  void loadRegFromStackSlot(MachineBasicBlock &MBB,
49                            MachineBasicBlock::iterator MBBI,
50                            unsigned DestReg, int FrameIndex,
51                            const TargetRegisterClass *RC) const;
52
53  /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
54  /// such, whenever a client has an instance of instruction info, it should
55  /// always be able to get register info as well (through this method).
56  ///
57  const Thumb2RegisterInfo &getRegisterInfo() const { return RI; }
58};
59}
60
61#endif // THUMB2INSTRUCTIONINFO_H
62