Int vs Word performance?

[Simon Peyton-Jones]

| | A quick grep shows almost no specialization at all for Word, or for
| | IntXX/WordXX (see below). Still, none of that seems to explain the
| | example repeated at the top of this message.
|
| We'd be delighted to apply suitable library patches.

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