Faster compilation speed

[David S. Miller]

   From: Richard Henderson <rth@redhat.com>
   Date: Mon, 19 Aug 2002 10:29:09 -0700

   Well, no, since SET, MEM, REG, PLUS all have two arguments.
   And thus are all allocated from the same page.

Ok, how about walking from INSN down to the SET?  The problem
does indeed exist there.

Next, we have the fragmentation issue.  Look at the RTL you
have right before reload runs on any non-trivial compilation,
and see where the pointers are.

So the problem is there.