* config/arc/arc.c (acr_print_operand): Adjust fallthru comment.
	(check_if_valid_sleep_operand): Add missing fallthru comment.
	(arc_register_move_cost): Increase buffer size.
	* config/arc/arc.md (cbranch4si_scratch): Add missing fallthru
	comment.
	* config/arc/predicates.md (move_str_operand): Avoid fallthru.

From-SVN: r241585