MipsRegisterInfo.h revision 71746220d3d1c3e8efba35038ac2ff14b4a4d3ae
1//===-- MipsRegisterInfo.h - Mips Register Information Impl -----*- 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 Mips implementation of the TargetRegisterInfo class. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef MIPSREGISTERINFO_H 15#define MIPSREGISTERINFO_H 16 17#include "Mips.h" 18#include "llvm/Target/TargetRegisterInfo.h" 19 20#define GET_REGINFO_HEADER 21#include "MipsGenRegisterInfo.inc" 22 23namespace llvm { 24class MipsSubtarget; 25class TargetInstrInfo; 26class Type; 27 28class MipsRegisterInfo : public MipsGenRegisterInfo { 29protected: 30 const MipsSubtarget &Subtarget; 31 const TargetInstrInfo &TII; 32 33public: 34 MipsRegisterInfo(const MipsSubtarget &Subtarget, const TargetInstrInfo &tii); 35 36 /// getRegisterNumbering - Given the enum value for some register, e.g. 37 /// Mips::RA, return the number that it corresponds to (e.g. 31). 38 static unsigned getRegisterNumbering(unsigned RegEnum); 39 40 /// Get PIC indirect call register 41 static unsigned getPICCallReg(); 42 43 /// Adjust the Mips stack frame. 44 void adjustMipsStackFrame(MachineFunction &MF) const; 45 46 /// Code Generation virtual methods... 47 const uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0) const; 48 const uint32_t *getCallPreservedMask(CallingConv::ID) const; 49 50 BitVector getReservedRegs(const MachineFunction &MF) const; 51 52 virtual bool requiresRegisterScavenging(const MachineFunction &MF) const; 53 54 virtual bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const; 55 56 /// Stack Frame Processing Methods 57 void eliminateFrameIndex(MachineBasicBlock::iterator II, 58 int SPAdj, RegScavenger *RS = NULL) const; 59 60 void processFunctionBeforeFrameFinalized(MachineFunction &MF) const; 61 62 /// Debug information queries. 63 unsigned getFrameRegister(const MachineFunction &MF) const; 64 65 /// Exception handling queries. 66 unsigned getEHExceptionRegister() const; 67 unsigned getEHHandlerRegister() const; 68 69private: 70 virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo, 71 int FrameIndex, uint64_t StackSize, 72 int64_t SPOffset) const = 0; 73}; 74 75} // end namespace llvm 76 77#endif 78