[PATCH] D109155: [InstCombine] Fold BW/2+1 tops bits are same pattern

Sanjay Patel via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Sep 3 07:12:35 PDT 2021


spatel added a comment.

In D109155#2982324 <https://reviews.llvm.org/D109155#2982324>, @spatel wrote:

> The half-width truncate clause seems too restrictive. I assume we want to catch a case like this too:
> https://alive2.llvm.org/ce/z/UAQ4yQ

Disregard that failed attempt at a proof. :)
Trying to find another example now...


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https://reviews.llvm.org/D109155



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