[PATCH] D92808: [ObjC][ARC] Annotate calls with attributes instead of emitting retainRV or claimRV calls in the IR

[Akira Hatanaka via Phabricator via llvm-commits]

ahatanak marked an inline comment as done.
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Add helper functions to ObjCARCRVAttr.h for adding, removing, or looking up attributes.


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https://reviews.llvm.org/D92808