[PATCH] D122010: [InstCombine] try to canonicalize logical shift after bswap

Fri Mar 18 09:30:21 PDT 2022

spatel added a comment.

In D122010#3392573 <https://reviews.llvm.org/D122010#3392573>, @RKSimon wrote:

> I haven't had chance to look at https://github.com/llvm/llvm-project/issues/53867 yet but this has a lot in common with it (and feel free to grab it if you have the bandwidth) - please can you add test coverage for that as well?

Sure - if we canonicalize in this direction, then that problem won't be solved by this patch, but I think it becomes a simpler fold (we don't have to worry about the trailing trunc/demanded bits):
https://alive2.llvm.org/ce/z/zC5Gez

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https://reviews.llvm.org/D122010