Well, why would you run 32-bit code on an 8-bit processor? Maybe so you don't have to write code on an 8-bit processor - you know those things can't add past 256.. so if you have some code and just want to use it without wrapping your head around everything that tests it's limits you can safely do this now.
Honestly, I don't even know why I'm explaining this on slashdot of all the places.
Keep the number of passes in a compiler to a minimum. -- D. Gries