Slava Pestov ee92a117e6 SILGen: Simplify on-demand function emission ...

This mechanism is used for imported functions with bodies synthesized
by the ClangImporter, as well as on-demand accessors synthesized when
required for a protocol conformance (eg, a _read accessor, or a
_modify on a property whose opaque access pattern doesn't use a
_modify, such as an @objc dynamic property).

Previously this was intertwined with the 'delayed function' mechanism,
which is similar, but used for a different case -- implicit functions
inside the same translation unit.

Untangle these to allow further simplifications.

2020-05-15 02:19:24 -04:00

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