[PATCH] D92068: [MachineCombiner] Add MustReduceRegisterPressure goal

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

I agree, this shouldn't incur compile-time cost for targets on which this won't even be run.
I'm going to guess that pretty much all extra cost comes from requiring `LiveIntervals`,
in which case i'd guess you'd want to compute it lazily only when actually needed.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D92068/new/

https://reviews.llvm.org/D92068