Faster compilation speed

[David S. Miller]

   From: David Edelsohn <dje@watson.ibm.com>
   Date: Tue, 13 Aug 2002 18:58:25 -0400
   
   	The problem isn't that the number is low at optimization.

Can you control when the performance counters start/stop monitoring?
If so, then you can figure out more precisely whether it is mostly
during:

1) Front end tree or tree->rtl conversion

2) rest_of_compilation() onward

3) Both #1 and #2 about evenly, because all of our core data
   structures come out of GC the whole compiler has bad spatial
   and temporal locality

My money is on #3 :-)