1 //===- AlphaRegisterInfo.h - Alpha Register Information Impl ----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source 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, int FrameIndex,
34 const TargetRegisterClass *RC) const;
36 void storeRegToAddr(MachineFunction &MF, unsigned SrcReg,
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, unsigned OpNum,
52 int FrameIndex) const;
54 MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
55 MachineInstr* LoadMI) const {
59 void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
60 unsigned DestReg, unsigned SrcReg,
61 const TargetRegisterClass *DestRC,
62 const TargetRegisterClass *SrcRC) const;
64 void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
65 unsigned DestReg, const MachineInstr *Orig) const;
67 const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
69 const TargetRegisterClass* const* getCalleeSavedRegClasses(
70 const MachineFunction *MF = 0) const;
72 BitVector getReservedRegs(const MachineFunction &MF) const;
74 bool hasFP(const MachineFunction &MF) const;
76 void eliminateCallFramePseudoInstr(MachineFunction &MF,
77 MachineBasicBlock &MBB,
78 MachineBasicBlock::iterator I) const;
80 void eliminateFrameIndex(MachineBasicBlock::iterator II,
81 int SPAdj, RegScavenger *RS = NULL) const;
83 //void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
85 void emitPrologue(MachineFunction &MF) const;
86 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
88 // Debug information queries.
89 unsigned getRARegister() const;
90 unsigned getFrameRegister(MachineFunction &MF) const;
92 // Exception handling queries.
93 unsigned getEHExceptionRegister() const;
94 unsigned getEHHandlerRegister() const;
96 int getDwarfRegNum(unsigned RegNum, bool isEH) const;
98 static std::string getPrettyName(unsigned reg);
101 } // end namespace llvm