[clang] [Clang] Implement __reference_converts_from_temporary (PR #91199)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

@cjdb said he had discarded the implementation of this intrinsic in https://reviews.llvm.org/D135341 because he thought this was not as trivial as the `construct` version. Given that we have lost all the Phab histories, I think it'd be better to invite @cjdb to take a look at this? And I'm also curious what the previous implementation was :)

https://github.com/llvm/llvm-project/pull/91199