Question

mips : how do I use a loop to fill all the t registers with an incrementing number?

Answer 1

I'm not sure that this is possible with MIPS. For as far as I can remember, it is not possible to update the source/destination registers while a program is running. You can, however, do something like:
mov $t0, $0
add $t1, $t0, 1
add $t2, $t1, 1
and so on.

Answer 2

k, found out there is a way , but it's very slow. http://stackoverflow.com/questions/5119656/mips-assembly-register-traversing
66 I think your way works better