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

[Akira Hatanaka via Phabricator via cfe-commits]

ahatanak added a comment.

In D92808#2443006 <https://reviews.llvm.org/D92808#2443006>, @compnerd wrote:

> There is nothing particularly special about that.  The reason for the funclet handling there is that in the case of an outlined block for exception handling (i.e. a funclet), we need to ensure that the assembly marker received the funclet token as failure to do so would mark the assembly as unreachable and would thus thwart the auto-release claim.  For the normal codepath, the behaviour should be identical.

ARC contract pass removes attribute retainRV/claimRV (but not attribute rv_marker) from a call and inserts a retainRV/claimRV call after the call in the IR. In that case, the inserted retainRV/claimRV should get the funclet token. Is that right?


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