em forwarding performance (was Proposed 6.2 em RELEASE patch

[Ivan Voras]

Divacky Roman wrote:

> hm.. now I am confused. the rule is that having I586_CPU improves
> performance because optimized bzero/bcopy is included (its not
> included if you only have I686_CPU).
> 
> I dont understand why the generic version is used.

I believe the consensus was that I486 line disables it, i.e. to leave
just I586 and I686 in.