[PATCH] D107170: [InstCombine] canonicalize cmp-of-bitcast-of-vector-cmp to use zero constant

Sanjay Patel via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Jul 30 11:33:00 PDT 2021


spatel added a comment.

In D107170#2916900 <https://reviews.llvm.org/D107170#2916900>, @lebedev.ri wrote:

> The actual pattern here is: https://alive2.llvm.org/ce/z/GKG6Sy
> Can you generalize this somewhat by making use of `isFreeToInvert()` on the `bitcast`'s argument?

Yes, that's better. I'll add some tests and then update here.


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