llvm-project

437ad06f - [libc++] Use `__reference_constructs_from_temporary` if eligible (#141916)

[libc++] Use `__reference_constructs_from_temporary` if eligible (#141916) Currently, libc++'s `<tuple>` is using the deprecated `__reference_binds_to_temporary` intrinsic. This PR starts to use `__reference_constructs_from_temporary` if possible. It seems that `__reference_constructs_from_temporary` should be used via an internal type traits provided in `<__type_traits/reference_constructs_from_temporary.h>`. But given the old intrinsic was directly used, this PR doesn't switch to the current convention yet. P2255R2 is related. Although the paper indicated that constructors of `tuple` should be deleted in such a case. --------- Co-authored-by: Nikolas Klauser <nikolasklauser@berlin.de>