Int vs Word performance?

Hello, sorry for breaking the thread, I just got in the list. Simon Peyton-Jones simonpj at microsoft.com :

PS: in the case that no one gets around to creating such a patch, creating a ticket that documents the problem and points to the needed specialisations would be a start

Was this created? I could not find something about it in the GHC trac. Greetings. -- marcot http://marcot.iaaeee.org/