[PATCH] D159283: Add intrinsic to count trailing zero elements in a vector

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

What's the use case for the poison behavior? If it wasn't for X86's weird bsr/bsf instruction behaviour would we have this on the regular llvm.cttz/ctlz intrinsics?


Repository:
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  https://reviews.llvm.org/D159283/new/

https://reviews.llvm.org/D159283