}
	n := s.Def.(*ir.Name)
	if len(types_) != 0 {
		n = substArgTypes(n, types_...)
	}
	return n
}

// SubstArgTypes substitutes the given list of types for
// successive occurrences of the "any" placeholder in the
// type syntax expression n.Type.
func substArgTypes(old *ir.Name, types_ ...*types.Type) *ir.Name {
	for _, t := range types_ {
		types.CalcSize(t)
	}

	Cboth ChanDir = Crecv | Csend
)

// Types stores pointers to predeclared named types.
//
// It also stores pointers to several special types:
//   - Types[TANY] is the placeholder "any" type recognized by SubstArgTypes.
//   - Types[TBLANK] represents the blank variable's type.
//   - Types[TINTER] is the canonical "interface{}" type.
//   - Types[TNIL] represents the predeclared "nil" value's type.