///
/// If \p F is specified, the argument is inserted at the end of the argument
/// list for \p F.
- explicit Argument(Type *Ty, const Twine &Name = "", Function *F = 0);
+ explicit Argument(Type *Ty, const Twine &Name = "", Function *F = nullptr);
inline const Function *getParent() const { return Parent; }
inline Function *getParent() { return Parent; }