(setf (car args) nil)))
(values))
-
-(defun handle-nested-dynamic-extent-lvars (arg)
- (let ((use (lvar-uses arg)))
+(defun handle-nested-dynamic-extent-lvars (lvar)
+ (let ((uses (lvar-uses lvar)))
;; Stack analysis wants DX value generators to end their
;; blocks. Uses of mupltiple used LVARs already end their blocks,
;; so we just need to process used-once LVARs.
- (when (node-p use)
- (node-ends-block use))
- ;; If the function result is DX, so are its arguments... This
- ;; assumes that all our DX functions do not store their arguments
- ;; anywhere -- just use, and maybe return.
- (if (basic-combination-p use)
- (cons arg (funcall (lambda (lists)
- (reduce #'append lists))
- (mapcar #'handle-nested-dynamic-extent-lvars (basic-combination-args use))))
- (list arg))))
+ (when (node-p uses)
+ (node-ends-block uses))
+ ;; If this LVAR's USE is good for DX, it must be a regular
+ ;; combination, and its arguments are potentially DX as well.
+ (flet ((recurse (use)
+ (loop for arg in (combination-args use)
+ append (handle-nested-dynamic-extent-lvars arg))))
+ (cons lvar
+ (if (listp uses)
+ (loop for use in uses
+ when (use-good-for-dx-p use)
+ nconc (recurse use))
+ (when (use-good-for-dx-p uses)
+ (recurse uses)))))))
(defun recognize-dynamic-extent-lvars (call fun)
(declare (type combination call) (type clambda fun))