[PATCH] D125190: [AArch64] Improve multi-precision subtractions

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

Could you explain a bit why this patch works?  The "ISD::AND" you're detecting isn't showing up in the final code.  Is there some sort of ordering issue here, where we don't re-run this combine after the AND goes away?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D125190/new/

https://reviews.llvm.org/D125190