[PATCH] D111839: [AArch64][GlobalISel] combine and + [la]sr => [su]bfx

[Jay Foad via Phabricator via llvm-commits]

foad requested changes to this revision.
foad added a comment.
This revision now requires changes to proceed.

I don't think there are any cases where it is beneficial to combine `ashr (and x, n), k -> sbfx` (are there?), because for any case where you can do that, it would be better just to remove the `and` and leave it as an `ashr`.


Repository:
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CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D111839/new/

https://reviews.llvm.org/D111839