[llvm-branch-commits] [llvm] [MachinePipeliner] Add PipelinerLoopInfo hooks to reuse the reg-pressure detector (PR #212538)

[Ryotaro Kasuga via llvm-branch-commits]

https://github.com/kasuga-fj commented:

This looks very reasonable to me, but I'm not an expert in this area (code generation), so I'd like to leave the decision to someone else who is more familiar with it.

Side note: `TargetInstrInfo::PipelinerLoopInfo::shouldUseSchedule` is a similar feature. I think the direction taken by this patch is better, but it would be ideal to consolidate them.

https://github.com/llvm/llvm-project/pull/212538