[libcxx-commits] [libcxx] [libc++] Annotate the data member of variant with no_unique_address (PR #137783)

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huixie90 wrote:

> > Exactly. If this PR does not do that, I think we should, as we are creating a new ABI mode anyway
> 
> Makes sense. I'll try to take a stab at this. Converting to draft for now.
> 
> @huixie90, I'm curious - does your suggestion mean there is an appetite to make the same layout optimization for std::optional? I'd expect it to be more impactful there.

yes I agree.

https://github.com/llvm/llvm-project/pull/137783