[llvm] [LTO][Pipelines][Coro] Handle coroutines in LTO pipeline (PR #126168)

[Nikita Popov via llvm-commits]

nikic wrote:

No compile-time impact: https://llvm-compile-time-tracker.com/compare.php?from=2f7d3ec02349d4503e1fa8c54665025eb4f8e173&to=278399bf18d0a42c7edaceca46d5981895fc4925&stat=instructions:u

https://github.com/llvm/llvm-project/pull/126168