swift234

Factor OverloadSetRefExpr into an abstract base class covering the
notion of a reference to a set of declarations. Introduce one derived
class, OverloadedDeclRefExpr, which covers the only case we currently
handle for overload resolution [*]: a direct (unqualified) reference
to an overloaded set of entities. Future subclasses should handle,
e.g., overloaded member references such as a.b or a.b.c.

[*] Ugly hacks for static methods notwithstanding


Swift SVN r1345