;;; A REF represents a reference to a LEAF. REF-REOPTIMIZE is
;;; initially (and forever) NIL, since REFs don't receive any values
;;; and don't have any IR1 optimizer.
;;; A REF represents a reference to a LEAF. REF-REOPTIMIZE is
;;; initially (and forever) NIL, since REFs don't receive any values
;;; and don't have any IR1 optimizer.