egcs compile time optimization

[Jeffrey A Law]

  In message < 199712050128.UAA01626@jfc. >you write:
  > 
  > This patch improves compilation speed by removing a level of indirection
  > from common rtl references and merging the common rtl into one data
  > structure.
  > 
  > Sat Sep 20 17:14:23 1997  John F. Carr  <jfc@mit.edu>
  > 
  > 	* rtl.h (global_rtl): New variable, replacing separate variables for
  > 	commonly used rtl.
  > 	(const_int_rtx): Now array of rtx_def, not rtx.
  > 	* emit-rtl.c: Update for new rtl data structures.
  > 	* genattrtab.c: Define global_rtl.
Thanks.  I've installed this patch.

jeff