Is this a duplicate?

• I confirmed there appear to be no duplicate issues for this request and that I agree to the Code of Conduct

Area

General CCCL

Is your feature request related to a problem? Please describe.

We are using the intrinsic open coded, but depending on the architecture / os that might be invalid.

Describe the solution you'd like

We should replace all occurrences of __popc with ::cuda::std::popcount

Describe alternatives you've considered

No response

Additional context

No response