[PATCH] D156491: [RA] Split a virtual register in cold blocks if it is not assigned preferred physical register

[Florian Hahn via Phabricator via llvm-commits]

fhahn added a comment.

It looks like this is causing a ~10% performance regression on some of our workloads on ARM64 macOS. Working on a reproducer.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D156491/new/

https://reviews.llvm.org/D156491