* loop.c (count_one_set): New static function, broken out of
	count_loop_regs_set
	(count_loop_regs_set): Call it.
	* global.c (mark_reg_store): Handle clobbers here by not calling
	set_preference.
	(mark_reg_clobber): Just call mark_reg_store after ensuring SETTER
	is in fact a clobber.
	* integrate.c (process_reg_param): New function, broken out of
	expand_inline_function.
	(expand_inline_function): Call it.

From-SVN: r22875