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

[Gerolf Hoflehner via Phabricator via llvm-commits]

Gerolf added a comment.

This is interesting. Unfortunately these heuristic changes are always tricky and never satisfying. Is this change motivated entirely by limitations of the current shrink-wrapping algorithm or do you see gains from better allocation also.

-Gerolf


Repository:
  rL LLVM

https://reviews.llvm.org/D32201