[PATCH] D37093: [coroutines] Promote cleanup.dest.slot-like allocas to registers to avoid storing them in the coroutine frame

[David Majnemer via Phabricator via llvm-commits]

majnemer added a comment.

Seems fragile. What if we run optimizations and transform the IR to another, different, version of the IR but the alloca is not promotable anymore? On occasion, the compiler can pessimize a code sequence and coroutine lowering should be resilient to such things.


https://reviews.llvm.org/D37093