1 //===-- AVRRegisterInfo.h - AVR 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 AVR implementation of the TargetRegisterInfo class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_AVR_REGISTER_INFO_H 15 #define LLVM_AVR_REGISTER_INFO_H 16 17 #include "llvm/CodeGen/TargetRegisterInfo.h" 18 19 #define GET_REGINFO_HEADER 20 #include "AVRGenRegisterInfo.inc" 21 22 namespace llvm { 23 24 /// Utilities relating to AVR registers. 25 class AVRRegisterInfo : public AVRGenRegisterInfo { 26 public: 27 AVRRegisterInfo(); 28 29 public: 30 const uint16_t * 31 getCalleeSavedRegs(const MachineFunction *MF = 0) const override; 32 const uint32_t *getCallPreservedMask(const MachineFunction &MF, 33 CallingConv::ID CC) const override; 34 BitVector getReservedRegs(const MachineFunction &MF) const override; 35 36 const TargetRegisterClass * 37 getLargestLegalSuperClass(const TargetRegisterClass *RC, 38 const MachineFunction &MF) const override; 39 40 /// Stack Frame Processing Methods 41 void eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj, 42 unsigned FIOperandNum, 43 RegScavenger *RS = NULL) const override; 44 45 unsigned getFrameRegister(const MachineFunction &MF) const override; 46 47 const TargetRegisterClass * 48 getPointerRegClass(const MachineFunction &MF, 49 unsigned Kind = 0) const override; 50 51 /// Splits a 16-bit `DREGS` register into the lo/hi register pair. 52 /// \param Reg A 16-bit register to split. 53 void splitReg(unsigned Reg, unsigned &LoReg, unsigned &HiReg) const; 54 trackLivenessAfterRegAlloc(const MachineFunction &)55 bool trackLivenessAfterRegAlloc(const MachineFunction &) const override { 56 return true; 57 } 58 59 }; 60 61 } // end namespace llvm 62 63 #endif // LLVM_AVR_REGISTER_INFO_H 64