Commits
Slava Pestov committed bbbe3079808
SIL: Introduce SILDefaultWitnessTable and start plumbing This will be used to help IRGen record protocol requirements with resilient default implementations in protocol metadata. To enable testing before all the Sema support is in place, this patch adds SIL parser, printer and verifier support for default witness tables. For now, SILGen emits empty default witness tables for protocol declarations in resilient modules, and IRGen ignores them when emitting protocol metadata.