void HandlePhysRegUse(unsigned Reg, MachineInstr *MI);
void HandlePhysRegDef(unsigned Reg, MachineInstr *MI,
SmallVector<unsigned, 4> &Defs);
void UpdatePhysRegDefs(MachineInstr *MI, SmallVector<unsigned, 4> &Defs);
void HandlePhysRegUse(unsigned Reg, MachineInstr *MI);
void HandlePhysRegDef(unsigned Reg, MachineInstr *MI,
SmallVector<unsigned, 4> &Defs);
void UpdatePhysRegDefs(MachineInstr *MI, SmallVector<unsigned, 4> &Defs);