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swift-mirror/lib/TBDGen
Dan Zheng 165af547f3 Fix SynthesizedFileUnit serialization and TBDGen issues.
Make `SynthesizedFileUnit` attached to a `SourceFile`. This seemed like the
least ad-hoc approach to avoid doing unnecessary work for other `FileUnit`s.

TBDGen: when visiting a `SourceFile`, also visit its `SynthesizedFileUnit` if
it exists.

Serialization: do not treat `SynthesizedFileUnit` declarations as xrefs when
serializing the companion `SourceFile`.

Resolves TF-1239: AutoDiff test failures.
2020-04-08 21:19:56 -07:00
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