swift234

SIL: SILModule::lookUpWitnessTable should always return a substitution list for generic conformances.

Even if the type is the DeclaredTypeInContext of the nominal, we still want the substitution list for generic specialization. Ideally the AST would always have a SpecializedProtocolConformance when we refer to a generic type instance, but our representation makes that difficult.

Swift SVN r12887