[PATCH] D143425: Reland "[X86][ABI] Don't preserve return regs for preserve_all/preserve_most CCs""

[Phoebe Wang via Phabricator via llvm-commits]

pengfei added a comment.

> This covers the broken scenario.

Can you explain it in more detail? I checked the test locally but found no difference in codegen with or without the new change.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D143425/new/

https://reviews.llvm.org/D143425