PowerPC GMP Improvement

[Nate Begeman]

I was wondering if there is an ongoing effort to improve the speed of GMP
using Motorola's AltiVec ISA extension to PowerPC.  If not, I'm willing to
tackle it over the next few weeks.  Just as a warmup, I have population
count running at about 10 bits per clock, which isn't too bad for a chip
that doesn't have a popcount instruction.

Cheers,
Nate Begeman
address@hidden