[PATCH] D42817: [X86] Add support creating KORTEST/KTEST from icmp+bitcast+or/and

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

I think this should be abandoned. We do use the C flag from KORTEST for all ones comparisons after r324577. OR+KORTEST is folded after r324580.

The one thing I can see is missing is that we don't use KTEST for an AND+bitcast+compare_with_zero. That's tracked by PR20703 after the update I just made to it.


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  https://reviews.llvm.org/D42817/new/

https://reviews.llvm.org/D42817