ChuanqiXu added a comment.

In D115222#3177269 <https://reviews.llvm.org/D115222#3177269>, @rjmccall wrote:

> Like a lot of the switched-resume lowering, this intrinsic is extremely tied 
> to C++ semantics.  If C++ doesn't actually allow the optimization anymore, 
> then I completely agree that we should go ahead and remove the intrinsic.  If 
> it's allowed and we just haven't implemented it yet, then okay, it might be 
> best to remove it, but an unused intrinsic that we're planning to start using 
> soon-ish isn't really doing any harm.

Understood. I think it is not allowed and I would consult with experts in EWG 
to make sure.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D115222/new/

https://reviews.llvm.org/D115222

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