regclass tweak 4 (or 5?)

[Jeffrey A Law]

  In message <19991122170058.42206@atrey.karlin.mff.cuni.cz>you write:
  > Hi
  > When optimizing for size, it is probably better to ignore loop structure
  > for preferrencing.
  > 
  > Mon Nov 22 16:59:35 MET 1999  Jan Hubicka  <hubicka@freesoft.cz>
  > 	* regclass.c (scan_one_insn): Set loop_cost to 1 when
  > 	optimizing for size.
This is fine.  Please install this patch.

Thanks,
jeff