232     struct Register {  struct
234       Register(llvm::Register R, unsigned S) : Reg(R), Sub(S) {}  in Register()  argument
235       Register(const MachineOperand &Op)  in Register()  argument
237       Register &operator=(const MachineOperand &Op) {  in operator =()
246       bool isVReg() const {  in isVReg()
249       bool isSlot() const { return Reg != 0 && Reg.isStack(); }  in isSlot()
250       operator MachineOperand() const {  in operator MachineOperand()
261       bool operator==(Register R) const { return Reg == R.Reg && Sub == R.Sub; }  in operator ==()
262       bool operator!=(Register R) const { return !operator==(R); }  in operator !=()
263       bool operator<(Register R) const {  in operator <()
267       llvm::Register Reg;
268       unsigned Sub = 0;