As a sibling mentioned, -warn-long-function-bodies=<limit-ms> and -warn-long-expression-type-checking=<limit-ms> can flag these for you. That said, we should a

As a sibling mentioned, -warn-long-function-bodies=<limit-ms> and -warn-long-expression-type-checking=<limit-ms> can flag these for you. That said, we should also get these to be fast enough that we have to introduce new flags that take µs instead of ms.