Roman Levenstein 4ef29e57af [cast-optimizer] Properly handle conditional bridged casts in optimizeBridgedSwiftToObjCCast ...

If there is a conditional bridged cast from a swift type to an objc type and this cast happens in two stages, where:
-  in the firs stage the Swift type is casted to its bridged ObjC class (e.g. String to NSString) and
-  in the second stage there is a downcast to a subclass of a bridged ObjC class (e.g. NSString to MyString)

then the second stage should use a conditional cast.

rdar://32319580

2017-05-22 13:51:01 -07:00

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