regmove.c inconsistencies

[Jeffrey A Law]

  In message < 199807130429.AAA17945@jwlab.FEITH.COM >you write:
  > The following inconsistencies came up while looking into the i386
  > performance regression due to the June 11 regmove change.
Yes, regmove is inconsistent in its handling of REG_N_SETS/REFS.

The code to update the SETS/REFS is slated to go away after egcs-1.1
branches.  It was made obsolete by the "count_reg_usage" change.


jeff