Slava Pestov eec0fcdf49 IRGen: When available, use ClassMetadataStrategy::Update even if we don't have legacy type info ...

If we know our deployment target has a new Objective-C runtime, we can
emit fixed metadata for classes with resilient types even if those
types do not appear in the YAML legacy type info.

Fixes <rdar://problem/47649465>.

2019-02-18 22:39:13 -05:00

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