PATCH [FSF mainline] Fix pattern for store and update for apple-ppc-darwin mixed mode.

[David Edelsohn]

	This should be solved using the define_mode_macro functionality
now used by the Mips port.

;; This mode macro allows :P to be used for patterns that operate on
;; pointer-sized quantities.  Exactly one of the two alternatives will match.
(define_mode_macro P [(SI "Pmode == SImode") (DI "Pmode == DImode")])

David