Reducing RTL allocations

[David S. Miller]

   From: Marc Espie <espie@quatramaran.ens.fr>
   Date: Sat, 8 Jun 2002 17:40:37 +0200

   I'm tracking closely the work you (and other guys) are doing to
   speed things up.
   
   Assuming this applies, mutatis-mutandi, to a gcc from the 3.1
   branch, I'm going to give you some hard numbers as soon as I can...

A lot of the patches are going to be hard (but not impossible) to
apply to the 3.1 branch sources.  Especially my gen_sequence killer,
I had to remake the patch on almost a daily basis due to conflicting
changes occurring at the same time.