MipsRegisterInfo.h revision 5114226c1896f250be8881adf67d55a7e54b50fc
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 Type; 26 27class MipsRegisterInfo : public MipsGenRegisterInfo { 28protected: 29 const MipsSubtarget &Subtarget; 30 31public: 32 MipsRegisterInfo(const MipsSubtarget &Subtarget); 33 34 /// getRegisterNumbering - Given the enum value for some register, e.g. 35 /// Mips::RA, return the number that it corresponds to (e.g. 31). 36 static unsigned getRegisterNumbering(unsigned RegEnum); 37 38 /// Get PIC indirect call register 39 static unsigned getPICCallReg(); 40 41 /// Adjust the Mips stack frame. 42 void adjustMipsStackFrame(MachineFunction &MF) const; 43 44 /// Code Generation virtual methods... 45 unsigned getRegPressureLimit(const TargetRegisterClass *RC, 46 MachineFunction &MF) const; 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, unsigned FIOperandNum, 59 RegScavenger *RS = NULL) const; 60 61 void processFunctionBeforeFrameFinalized(MachineFunction &MF, 62 RegScavenger *RS = NULL) const; 63 64 /// Debug information queries. 65 unsigned getFrameRegister(const MachineFunction &MF) const; 66 67 /// Exception handling queries. 68 unsigned getEHExceptionRegister() const; 69 unsigned getEHHandlerRegister() const; 70 71 /// \brief Return GPR register class. 72 virtual const TargetRegisterClass *intRegClass(unsigned Size) const = 0; 73 74private: 75 virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo, 76 int FrameIndex, uint64_t StackSize, 77 int64_t SPOffset) const = 0; 78}; 79 80} // end namespace llvm 81 82#endif 83