1 //===-- Thumb1InstrInfo.h - Thumb-1 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-1 implementation of the TargetInstrInfo class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_ARM_THUMB1INSTRINFO_H
15 #define LLVM_LIB_TARGET_ARM_THUMB1INSTRINFO_H
16 
17 #include "ARMBaseInstrInfo.h"
18 #include "ThumbRegisterInfo.h"
19 
20 namespace llvm {
21   class ARMSubtarget;
22 
23 class Thumb1InstrInfo : public ARMBaseInstrInfo {
24   ThumbRegisterInfo RI;
25 public:
26   explicit Thumb1InstrInfo(const ARMSubtarget &STI);
27 
28   /// getNoopForMachoTarget - Return the noop instruction to use for a noop.
29   void getNoopForMachoTarget(MCInst &NopInst) const override;
30 
31   // Return the non-pre/post incrementing version of 'Opc'. Return 0
32   // if there is not such an opcode.
33   unsigned getUnindexedOpcode(unsigned Opc) const override;
34 
35   /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
36   /// such, whenever a client has an instance of instruction info, it should
37   /// always be able to get register info as well (through this method).
38   ///
getRegisterInfo()39   const ThumbRegisterInfo &getRegisterInfo() const override { return RI; }
40 
41   void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
42                    const DebugLoc &DL, unsigned DestReg, unsigned SrcReg,
43                    bool KillSrc) const override;
44   void storeRegToStackSlot(MachineBasicBlock &MBB,
45                            MachineBasicBlock::iterator MBBI,
46                            unsigned SrcReg, bool isKill, int FrameIndex,
47                            const TargetRegisterClass *RC,
48                            const TargetRegisterInfo *TRI) const override;
49 
50   void loadRegFromStackSlot(MachineBasicBlock &MBB,
51                             MachineBasicBlock::iterator MBBI,
52                             unsigned DestReg, int FrameIndex,
53                             const TargetRegisterClass *RC,
54                             const TargetRegisterInfo *TRI) const override;
55 
56 private:
57   void expandLoadStackGuard(MachineBasicBlock::iterator MI) const override;
58 };
59 }
60 
61 #endif
62