(setf (car args) nil)))
(values))
-(defun handle-nested-dynamic-extent-lvars (dx lvar)
- (let ((uses (lvar-uses lvar)))
- ;; DX value generators must end their blocks: see UPDATE-UVL-LIVE-SETS.
- ;; Uses of mupltiple-use LVARs already end their blocks, so we just need
- ;; to process uses of single-use LVARs.
- (when (node-p uses)
- (node-ends-block uses))
- ;; If this LVAR's USE is good for DX, it is either a CAST, or it
- ;; must be a regular combination whose arguments are potentially DX as well.
- (flet ((recurse (use)
- (etypecase use
- (cast
- (handle-nested-dynamic-extent-lvars dx (cast-value use)))
- (combination
- (loop for arg in (combination-args use)
- ;; deleted args show up as NIL here
- when (and arg (lvar-good-for-dx-p arg dx))
- append (handle-nested-dynamic-extent-lvars dx arg)))
- (ref
- (let* ((other (trivial-lambda-var-ref-lvar use)))
- (unless (eq other lvar)
- (handle-nested-dynamic-extent-lvars dx other)))))))
- (cons (cons dx lvar)
- (if (listp uses)
- (loop for use in uses
- when (use-good-for-dx-p use dx)
- nconc (recurse use))
- (when (use-good-for-dx-p uses dx)
- (recurse uses)))))))
-
(defun recognize-dynamic-extent-lvars (call fun)
(declare (type combination call) (type clambda fun))
(loop for arg in (basic-combination-args call)
(setf (lvar-dynamic-extent (cdr cell)) cleanup)))))
(values))
-;;; Called after a transform has been applied to CALL: if the call has a DX
-;;; result, propagate the DXness to the new functional as well.
-;;;
-;;; This is needed in case an earlier call to LOCALL-ANALYZE-COMPONENT
-;;; collected DX information before the transformation, in which case a later
-;;; call to LOCALL-ANALYZE-COMPONENT would not pick up the DX declaration
-;;; again, since the call has already been converted. (In other words, work
-;;; around the fact that optimization iterates, and locall analysis may have
-;;; already run by the time we are able to transform something.)
-(defun maybe-propagate-dynamic-extent (call fun)
- (when (lambda-p fun)
- (let* ((lvar (combination-lvar call))
- (cleanup (or (and lvar (lvar-dynamic-extent lvar))
- (return-from maybe-propagate-dynamic-extent)))
- (ret (lambda-return fun))
- (res (if ret
- (return-result ret)
- (return-from maybe-propagate-dynamic-extent)))
- (dx (car (rassoc lvar (cleanup-info cleanup) :test #'eq)))
- (new-dx-lvars (if (and dx res)
- (handle-nested-dynamic-extent-lvars dx res)
- (return-from maybe-propagate-dynamic-extent))))
- (when new-dx-lvars
- ;; This builds on what RECOGNIZE-DYNAMIC-EXTENT-LVARS does above.
- (aver (eq call (block-last (node-block call))))
- (dolist (cell new-dx-lvars)
- (let ((lvar (cdr cell)))
- (aver (not (lvar-dynamic-extent lvar)))
- (push cell (cleanup-info cleanup))
- (setf (lvar-dynamic-extent (cdr cell)) cleanup)))))))
-
;;; This function handles merging the tail sets if CALL is potentially
;;; tail-recursive, and is a call to a function with a different
;;; TAIL-SET than CALL's FUN. This must be called whenever we alter
(declare (type ref ref) (type mv-combination call) (type functional fun))
(when (and (looks-like-an-mv-bind fun)
(singleton-p (leaf-refs fun))
- (singleton-p (basic-combination-args call)))
+ (singleton-p (basic-combination-args call))
+ (not (functional-entry-fun fun)))
(let* ((*current-component* (node-component ref))
(ep (optional-dispatch-entry-point-fun
fun (optional-dispatch-max-args fun))))
(when (null (leaf-refs ep))
(aver (= (optional-dispatch-min-args fun) 0))
- (aver (not (functional-entry-fun fun)))
(setf (basic-combination-kind call) :local)
(sset-adjoin ep (lambda-calls-or-closes (node-home-lambda call)))
(merge-tail-sets call ep)