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 TargetRegisterInfo class.
12 //===----------------------------------------------------------------------===//
14 #ifndef ALPHAREGISTERINFO_H
15 #define ALPHAREGISTERINFO_H
17 #include "llvm/Target/TargetRegisterInfo.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 reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
32 unsigned DestReg, const MachineInstr *Orig) const;
34 const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
36 const TargetRegisterClass* const* getCalleeSavedRegClasses(
37 const MachineFunction *MF = 0) const;
39 BitVector getReservedRegs(const MachineFunction &MF) const;
41 bool hasFP(const MachineFunction &MF) const;
43 void eliminateCallFramePseudoInstr(MachineFunction &MF,
44 MachineBasicBlock &MBB,
45 MachineBasicBlock::iterator I) const;
47 void eliminateFrameIndex(MachineBasicBlock::iterator II,
48 int SPAdj, RegScavenger *RS = NULL) const;
50 //void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
52 void emitPrologue(MachineFunction &MF) const;
53 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
55 // Debug information queries.
56 unsigned getRARegister() const;
57 unsigned getFrameRegister(MachineFunction &MF) const;
59 // Exception handling queries.
60 unsigned getEHExceptionRegister() const;
61 unsigned getEHHandlerRegister() const;
63 int getDwarfRegNum(unsigned RegNum, bool isEH) const;
65 static std::string getPrettyName(unsigned reg);
68 } // end namespace llvm