Determining version of OpenBSD source

[Siju George]

Hi,

Could some one please tell me if the source in

http://fxr.watson.org/fxr/source//arch/amd64/amd64/cpu.c?v=OPENBSD#L334

belongs to 3.8 stable or current or older versions?

Thankyou so much

Kind Regards

Siju