1 //===- AlphaRegisterInfo.h - Alpha Register Information Impl ----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the Alpha implementation of the MRegisterInfo class.
12 //===----------------------------------------------------------------------===//
14 #ifndef ALPHAREGISTERINFO_H
15 #define ALPHAREGISTERINFO_H
17 #include "llvm/Target/MRegisterInfo.h"
18 #include "AlphaGenRegisterInfo.h.inc"
22 class TargetInstrInfo;
25 struct AlphaRegisterInfo : public AlphaGenRegisterInfo {
26 const TargetInstrInfo &TII;
28 AlphaRegisterInfo(const TargetInstrInfo &tii);
30 /// Code Generation virtual methods...
31 void storeRegToStackSlot(MachineBasicBlock &MBB,
32 MachineBasicBlock::iterator MBBI,
33 unsigned SrcReg, bool isKill, int FrameIndex,
34 const TargetRegisterClass *RC) const;
36 void storeRegToAddr(MachineFunction &MF, unsigned SrcReg, bool isKill,
37 SmallVectorImpl<MachineOperand> &Addr,
38 const TargetRegisterClass *RC,
39 SmallVectorImpl<MachineInstr*> &NewMIs) const;
41 void loadRegFromStackSlot(MachineBasicBlock &MBB,
42 MachineBasicBlock::iterator MBBI,
43 unsigned DestReg, int FrameIndex,
44 const TargetRegisterClass *RC) const;
46 void loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
47 SmallVectorImpl<MachineOperand> &Addr,
48 const TargetRegisterClass *RC,
49 SmallVectorImpl<MachineInstr*> &NewMIs) const;
51 MachineInstr* foldMemoryOperand(MachineInstr* MI,
52 SmallVectorImpl<unsigned> &Ops,
53 int FrameIndex) const;
55 MachineInstr* foldMemoryOperand(MachineInstr* MI,
56 SmallVectorImpl<unsigned> &Ops,
57 MachineInstr* LoadMI) const {
61 void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
62 unsigned DestReg, unsigned SrcReg,
63 const TargetRegisterClass *DestRC,
64 const TargetRegisterClass *SrcRC) const;
66 void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
67 unsigned DestReg, const MachineInstr *Orig) const;
69 const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
71 const TargetRegisterClass* const* getCalleeSavedRegClasses(
72 const MachineFunction *MF = 0) const;
74 BitVector getReservedRegs(const MachineFunction &MF) const;
76 bool hasFP(const MachineFunction &MF) const;
78 void eliminateCallFramePseudoInstr(MachineFunction &MF,
79 MachineBasicBlock &MBB,
80 MachineBasicBlock::iterator I) const;
82 void eliminateFrameIndex(MachineBasicBlock::iterator II,
83 int SPAdj, RegScavenger *RS = NULL) const;
85 //void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
87 void emitPrologue(MachineFunction &MF) const;
88 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
90 // Debug information queries.
91 unsigned getRARegister() const;
92 unsigned getFrameRegister(MachineFunction &MF) const;
94 // Exception handling queries.
95 unsigned getEHExceptionRegister() const;
96 unsigned getEHHandlerRegister() const;
98 int getDwarfRegNum(unsigned RegNum, bool isEH) const;
100 static std::string getPrettyName(unsigned reg);
103 } // end namespace llvm