[libcxx-commits] [libcxx] Revert "[libc++] Avoid constructing additional objects when using map::at" (PR #160738)

[Nikolas Klauser via libcxx-commits]

philnik777 wrote:

> > @alazarev Are you volunteering to fix the issue?
> 
> @philnik777 I guess regardless of who is fixing this we need to recover bots?

I'm happy to revert if I know who to contact about the state of the fix. Whether the person to contact is actually going to fix things or simply works on finding the right person doesn't matter to me, but I'd like to have someone to ask. Otherwise I'll never be able to re-land the patch (or break the bots in the same way again). I guess I'd also be happy if someone can tell me who the code owner is so I can pester that person.

> Do you known what is need to be done?

AFAICT the `llvm::rdf::RegisterSet` needs to be refactored to use a custom comparator instead of specializing `std::less` and `std::equal_to`. That's probably fairly easy, but should be done by someone who has some idea what's actually going on.


https://github.com/llvm/llvm-project/pull/160738