| //===-- PPCRegisterInfo.h - PowerPC Register Information Impl ---*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains the PowerPC implementation of the TargetRegisterInfo |
| // class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef POWERPC32_REGISTERINFO_H |
| #define POWERPC32_REGISTERINFO_H |
| |
| #include "PPC.h" |
| #include <map> |
| |
| #define GET_REGINFO_HEADER |
| #include "PPCGenRegisterInfo.inc" |
| |
| namespace llvm { |
| class PPCSubtarget; |
| class TargetInstrInfo; |
| class Type; |
| |
| class PPCRegisterInfo : public PPCGenRegisterInfo { |
| std::map<unsigned, unsigned> ImmToIdxMap; |
| const PPCSubtarget &Subtarget; |
| const TargetInstrInfo &TII; |
| public: |
| PPCRegisterInfo(const PPCSubtarget &SubTarget, const TargetInstrInfo &tii); |
| |
| /// getPointerRegClass - Return the register class to use to hold pointers. |
| /// This is used for addressing modes. |
| virtual const TargetRegisterClass * |
| getPointerRegClass(const MachineFunction &MF, unsigned Kind=0) const; |
| |
| unsigned getRegPressureLimit(const TargetRegisterClass *RC, |
| MachineFunction &MF) const; |
| |
| /// Code Generation virtual methods... |
| const uint16_t *getCalleeSavedRegs(const MachineFunction* MF = 0) const; |
| const uint32_t *getCallPreservedMask(CallingConv::ID CC) const; |
| |
| BitVector getReservedRegs(const MachineFunction &MF) const; |
| |
| virtual bool avoidWriteAfterWrite(const TargetRegisterClass *RC) const; |
| |
| /// We require the register scavenger. |
| bool requiresRegisterScavenging(const MachineFunction &MF) const { |
| return true; |
| } |
| |
| bool requiresFrameIndexScavenging(const MachineFunction &MF) const { |
| return true; |
| } |
| |
| bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const { |
| return true; |
| } |
| |
| void lowerDynamicAlloc(MachineBasicBlock::iterator II, |
| int SPAdj, RegScavenger *RS) const; |
| void lowerCRSpilling(MachineBasicBlock::iterator II, unsigned FrameIndex, |
| int SPAdj, RegScavenger *RS) const; |
| void lowerCRRestore(MachineBasicBlock::iterator II, unsigned FrameIndex, |
| int SPAdj, RegScavenger *RS) const; |
| bool hasReservedSpillSlot(const MachineFunction &MF, unsigned Reg, |
| int &FrameIdx) const; |
| void eliminateFrameIndex(MachineBasicBlock::iterator II, |
| int SPAdj, unsigned FIOperandNum, |
| RegScavenger *RS = NULL) const; |
| |
| // Debug information queries. |
| unsigned getFrameRegister(const MachineFunction &MF) const; |
| |
| // Exception handling queries. |
| unsigned getEHExceptionRegister() const; |
| unsigned getEHHandlerRegister() const; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif |