(defoptimizer (%special-unbind ir2-convert) ((var) node block)
(vop unbind node block))
+(defoptimizer (%dynamic-extent-start ir2-convert) (() node block) node block)
+(defoptimizer (%dynamic-extent-end ir2-convert) (() node block) node block)
+
;;; ### It's not clear that this really belongs in this file, or
;;; should really be done this way, but this is the least violation of
;;; abstraction in the current setup. We don't want to wire