Re: [PATCH v2] x86: use POPCNT for hweight<N>() when available

[Jan Beulich <jbeulich@xxxxxxxx>]

On 20.05.2020 19:18, Roger Pau Monné wrote:
> I also assume that using no_caller_saved_registers when available or
> else keeping the current behavior is not an acceptable solution? FWIW,
> from a FreeBSD PoV I would be OK with that, as I don't think there are
> any supported targets with clang < 5.

By "current behavior" do you mean what the patch currently
does (matching my earlier response that I may try going this
route) or the unpatched upstream tree?

Jan