[llvm] [AMDGPU] Prefer lower total register usage in regions with spilling (PR #71882)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> This work now builds on top of another patch "Improve ExcessRP flagging". That patch alone has functional changes to the scheduler so I will begin to work on putting out a PR for that work, unless there is reason to not do so.

That's what you're supposed to do 

https://github.com/llvm/llvm-project/pull/71882