Useless patterns in alpha.md

[Jeffrey A Law]

  In message < Pine.LNX.4.04.9911281030100.7880-100000@pathia.cygnus.co.uk >you w
rite:
  > If I understand correctly what these patterns are trying to do, they are
  > useless after the recent changes to register elimination.  Elimination
  > should no longer change the structure of an insn in invalid ways.
  > 
  > Bernd
  > 
  > 	* alpha.md: Delete patterns that work around register elimination
  > 	problems.
Specifically what changes to register elimination?

We tried to delete them a short while ago and rth said they were still
necessary.
jeff