that would actually be interesting on how much you win by doing so, and if you could run this dynamically (for instance reintroduce the #class optimization if you never override it in the image)...

On 2013-09-03, at 19:07, Nicolas Cellier <nicolas.cellier.aka.nice@gmail.com> wrote:
> I note that #class was removed from specialSelectors (nilled entry) so as
> to not use the VM hack which fetches the class without sending a message.
> Pharo prefers the regular message send.
> But next to that entry, there is #blockCopy: which was formerly used for
> blue book BlockContext.
> BlockContext was removed from Pharo...
> So that makes two available slots for optimizing most used (sent)
> messages...
> We might choose some candidates and test on some macro benchmark if ever
> that really makes a difference.