(declaim (ftype (function (continuation) ctype) continuation-type))
(defun continuation-type (cont)
(single-value-type (continuation-derived-type cont)))
+
+;;; If CONT is an argument of a function, return a type which the
+;;; function checks CONT for.
+#!-sb-fluid (declaim (inline continuation-externally-checkable-type))
+(defun continuation-externally-checkable-type (cont)
+ (or (continuation-%externally-checkable-type cont)
+ (%continuation-%externally-checkable-type cont)))
+(defun %continuation-%externally-checkable-type (cont)
+ (declare (type continuation cont))
+ (let ((dest (continuation-dest cont)))
+ (if (not (and dest (combination-p dest)))
+ ;; TODO: MV-COMBINATION
+ (setf (continuation-%externally-checkable-type cont) *wild-type*)
+ (let* ((fun (combination-fun dest))
+ (args (combination-args dest))
+ (fun-type (continuation-type fun)))
+ (if (or (not (fun-type-p fun-type))
+ ;; FUN-TYPE might be (AND FUNCTION (SATISFIES ...)).
+ (fun-type-wild-args fun-type))
+ (progn (dolist (arg args)
+ (setf (continuation-%externally-checkable-type arg)
+ *wild-type*))
+ *wild-type*)
+ (let* ((arg-types (append (fun-type-required fun-type)
+ (fun-type-optional fun-type)
+ (let ((rest (list (or (fun-type-rest fun-type)
+ *wild-type*))))
+ (setf (cdr rest) rest)))))
+ ;; TODO: &KEY
+ (loop
+ for arg of-type continuation in args
+ and type of-type ctype in arg-types
+ do (setf (continuation-%externally-checkable-type arg)
+ type))
+ (continuation-%externally-checkable-type cont)))))))
\f
;;;; interface routines used by optimizers
(let ((info (combination-kind node)))
(when (fun-info-p info)
(let ((attr (fun-info-attributes info)))
- (when (and (ir1-attributep attr flushable)
+ (when (and (not (ir1-attributep attr call))
;; ### For now, don't delete potentially
;; flushable calls when they have the CALL
;; attribute. Someday we should look at the
;; functional args to determine if they have
;; any side effects.
- (not (ir1-attributep attr call)))
+ (if (policy node (= safety 3))
+ (and (ir1-attributep attr flushable)
+ (every (lambda (arg)
+ (member (continuation-type-check arg)
+ '(nil :deleted)))
+ (basic-combination-args node))
+ (valid-fun-use node
+ (info :function :type
+ (leaf-source-name (ref-leaf (continuation-use (basic-combination-fun node)))))
+ :result-test #'always-subtypep
+ :lossage-fun nil
+ :unwinnage-fun nil))
+ (ir1-attributep attr unsafely-flushable)))
(flush-dest (combination-fun node))
(dolist (arg (combination-args node))
(flush-dest arg))
(new-block (continuation-starts-block new-cont)))
(link-node-to-previous-continuation new-node new-cont)
(setf (continuation-dest new-cont) new-node)
+ (setf (continuation-%externally-checkable-type new-cont) nil)
(add-continuation-use new-node dummy-cont)
(setf (block-last new-block) new-node)
(flush-dest (combination-fun use))
(let ((fun-cont (basic-combination-fun call)))
(setf (continuation-dest fun-cont) use)
- (setf (combination-fun use) fun-cont))
+ (setf (combination-fun use) fun-cont)
+ (setf (continuation-%externally-checkable-type fun-cont) nil))
(setf (combination-kind use) :local)
(setf (functional-kind fun) :let)
(flush-dest (first (basic-combination-args call)))
(setf (combination-kind node) :full)
(let ((args (combination-args use)))
(dolist (arg args)
- (setf (continuation-dest arg) node))
+ (setf (continuation-dest arg) node)
+ (setf (continuation-%externally-checkable-type arg) nil))
(setf (combination-args use) nil)
(flush-dest list)
(setf (combination-args node) args))