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

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

In D159283#4634754 <https://reviews.llvm.org/D159283#4634754>, @paulwalker-arm wrote:

> Which sounds like mirroring cttz's second operand is useful then because you can omit the need for the extra compare?

Yes. I think I'm missing when the bit will be set. Does D158291 <https://reviews.llvm.org/D158291> intend to set the zero is poison bit?


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https://reviews.llvm.org/D159283