[PATCH] D105671: [Intrinsics][ObjC] Mark objc_retain and friends as thisreturn.

[Jon Roelofs via Phabricator via cfe-commits]

jroelofs added a comment.

In D105671#2978248 <https://reviews.llvm.org/D105671#2978248>, @rjmccall wrote:

> How does `stripPointerCasts` "see through" an attribute on the underlying call instruction?

https://github.com/llvm/llvm-project/blob/bf77b11277411f6725cf09a66feb36d2c14bc8a7/llvm/lib/IR/Value.cpp#L652


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