[PATCH] D32201: [RALLOC] Increase CSR cost in RegAllocGreedy to favour splitting over CSR first use

[Zixuan Wu (Zeson) via Phabricator via llvm-commits]

wuzish added a comment.

Should this good patch be rebased and continued to move on? @wmi 
it'd be better to move on this work because D27366 <https://reviews.llvm.org/D27366> is abandoned and D34608 <https://reviews.llvm.org/D34608> is not updated for a long time, and those 3 patches are all trying to fix same issue and not landed successfully.
It would be great If it can land.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D32201/new/

https://reviews.llvm.org/D32201