C implementation of mod_1_1

[Torbjorn Granlund]

Marc Glisse <marc.glisse at inria.fr> writes:

  Before the sparc T3 was out (it has been available for a few months
  now), they announced that it had a proper add with carry, mulhi, and
  the multiplications were fully pipelined. I haven't had a chance to
  check that in the doc since then (not sure they even published
  one...), I only saw it there (page 7):
  http://www.opensparc.net/pubs/preszo/09/hotChips_spracklen-final.pdf
  
Adding these instructions, available on any other processor since epoch,
is a major step forward for Oracle...furthermore these chips also have a
target speed of a blazing 1.4 GHz!  :-)

  Fujitsu's recent sparc64 are supposed to have an integer FMA that
  works on FPU registers.
  
Fujitsu's sparc processors have actually been decent for a long time,
but we have never had the opportunety to run GMP on any of them.

-- 
Torbjörn