[PATCH] D122829: [AArch64] Optimize SDIV with pow2 constant divisor

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

If I'm following correctly, this is essentially reverting D4438 <https://reviews.llvm.org/D4438> .  It was implemented that way at the time to avoid the complex `add w8, w0, w8, lsr #26` operation. Reverting that isn't obviously an improvement; I don't think ARM microarchitecture has significantly changed in this respect since the last time it was measured.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D122829/new/

https://reviews.llvm.org/D122829