[PATCH] D119369: [InstCombine] reduce mul operands based on undemanded high bits

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

In D119369#3308910 <https://reviews.llvm.org/D119369#3308910>, @lebedev.ri wrote:

> LGTM, thank you.

Thanks!

> The same is true for `and`/`or`/`xor`.

Yes - those are more general, Any undemanded bit (not just high bits) in the result is also undemanded in the operands. Those appear to be handled optimally already.


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  https://reviews.llvm.org/D119369/new/

https://reviews.llvm.org/D119369