return &AVR::PTRDISPREGSRegClass;
}
+void AVRRegisterInfo::splitReg(unsigned Reg,
+ unsigned &LoReg,
+ unsigned &HiReg) const {
+ assert(AVR::DREGSRegClass.contains(Reg) && "can only split 16-bit registers");
+
+ LoReg = getSubReg(Reg, AVR::sub_lo);
+ HiReg = getSubReg(Reg, AVR::sub_hi);
+}
+
} // end of namespace llvm
+
unsigned FIOperandNum,
RegScavenger *RS = NULL) const override;
- /// Debug information queries.
unsigned getFrameRegister(const MachineFunction &MF) const override;
- /// Returns a TargetRegisterClass used for pointer values.
const TargetRegisterClass *
getPointerRegClass(const MachineFunction &MF,
unsigned Kind = 0) const override;
+
+ /// Splits a 16-bit `DREGS` register into the lo/hi register pair.
+ /// \param Reg A 16-bit register to split.
+ void splitReg(unsigned Reg, unsigned &LoReg, unsigned &HiReg) const;
};
} // end namespace llvm