AM30/AM33 SP handling

[Jeffrey A Law]

  In message < orhfcpdi8s.fsf@zecarneiro.lsd.ic.unicamp.br >you write:
  > Index: gcc/ChangeLog
  > from  Alexandre Oliva  <aoliva@cygnus.com>
  > 
  > 	* config/mn10300/mn10300.h (REG_CLASS_FROM_LETTER): Return
  > 	EXTENDED_REGS only if TARGET_AM33.
  > 	* config/mn10300/mn10300.md (movsi, addsi): Do not allow
  > 	reload for SP.
This is fine.  Though the ChangeLog entry for movsi/addsi is weird.  It
might be better sa
	* mn10300.md (movsi, addsi patterns): Avoid exposing SP_REGS to
	register allocation and reloading unless absolutely necessary.

The ChangeLog entry is also missing the change you made to the addsi3
expander.  You need to add an entry for that change.

jeff