0.8.3.39:
[sbcl.git] / src / compiler / ir1tran-lambda.lisp
index ecb2a64..ef8d4e0 100644 (file)
                                &key
                                aux-vars
                                aux-vals
-                               result
                                (source-name '.anonymous.)
                                debug-name
                                 (note-lexical-bindings t))
-  (declare (list body vars aux-vars aux-vals)
-          (type (or continuation null) result))
+  (declare (list body vars aux-vars aux-vals))
 
   ;; We're about to try to put new blocks into *CURRENT-COMPONENT*.
   (aver-live-component *current-component*)
                   :bind bind
                   :%source-name source-name
                   :%debug-name debug-name))
-        (result (or result (make-continuation))))
+        (result (make-continuation)))
 
     ;; just to check: This function should fail internal assertions if
     ;; we didn't set up a valid debug name above.
 
     (setf (lambda-home lambda) lambda)
     (collect ((svars)
-             (new-venv nil cons))
+              (new-venv nil cons))
 
       (dolist (var vars)
        ;; As far as I can see, LAMBDA-VAR-HOME should never have
        ;; been set before. Let's make sure. -- WHN 2001-09-29
-       (aver (null (lambda-var-home var)))
+       (aver (not (lambda-var-home var)))
        (setf (lambda-var-home var) lambda)
        (let ((specvar (lambda-var-specvar var)))
          (cond (specvar
             (setf (lambda-tail-set lambda) tail-set)
             (setf (lambda-return lambda) return)
             (setf (continuation-dest result) return)
-            (flush-continuation-externally-checkable-type result)
             (setf (block-last block) return)
             (link-node-to-previous-continuation return result)
             (use-continuation return dummy))
 (defun generate-optional-default-entry (res default-vars default-vals
                                         entry-vars entry-vals
                                         vars supplied-p-p body
-                                        aux-vars aux-vals cont
+                                        aux-vars aux-vals
                                         source-name debug-name
                                         force)
   (declare (type optional-dispatch res)
           (list default-vars default-vals entry-vars entry-vals vars body
-                aux-vars aux-vals)
-          (type (or continuation null) cont))
+                aux-vars aux-vals))
   (let* ((arg (first vars))
         (arg-name (leaf-source-name arg))
         (info (lambda-var-arg-info arg))
                  (list* (leaf-source-name supplied-p) arg-name default-vals)
                  (cons arg entry-vars)
                  (list* t arg-name entry-vals)
-                 (rest vars) t body aux-vars aux-vals cont
+                 (rest vars) t body aux-vars aux-vals
                  source-name debug-name
                   force)
                 (ir1-convert-hairy-args
                  (cons arg-name default-vals)
                  (cons arg entry-vars)
                  (cons arg-name entry-vals)
-                 (rest vars) supplied-p-p body aux-vars aux-vals cont
+                 (rest vars) supplied-p-p body aux-vars aux-vals
                  source-name debug-name
                   force))))
 
 ;;; type when computing the type for the main entry's argument.
 (defun ir1-convert-more (res default-vars default-vals entry-vars entry-vals
                             rest more-context more-count keys supplied-p-p
-                            body aux-vars aux-vals cont
+                            body aux-vars aux-vals
                             source-name debug-name)
   (declare (type optional-dispatch res)
           (list default-vars default-vals entry-vars entry-vals keys body
-                aux-vars aux-vals)
-          (type (or continuation null) cont))
+                aux-vars aux-vals))
   (collect ((main-vars (reverse default-vars))
            (main-vals default-vals cons)
            (bind-vars)
                        body (main-vars)
                        :aux-vars (append (bind-vars) aux-vars)
                        :aux-vals (append (bind-vals) aux-vals)
-                       :result cont
                        :debug-name (debug-namify "varargs entry for ~A"
                                                  (as-debug-name source-name
                                                                 debug-name))))
 (defun ir1-convert-hairy-args (res default-vars default-vals
                                entry-vars entry-vals
                                vars supplied-p-p body aux-vars
-                               aux-vals cont
+                               aux-vals
                                source-name debug-name
                                force)
   (declare (type optional-dispatch res)
            (list default-vars default-vals entry-vars entry-vals vars body
-                 aux-vars aux-vals)
-           (type (or continuation null) cont))
+                 aux-vars aux-vals))
   (cond ((not vars)
          (if (optional-dispatch-keyp res)
              ;; Handle &KEY with no keys...
              (ir1-convert-more res default-vars default-vals
                                entry-vars entry-vals
                                nil nil nil vars supplied-p-p body aux-vars
-                               aux-vals cont source-name debug-name)
+                               aux-vals source-name debug-name)
              (let ((fun (ir1-convert-lambda-body
                         body (reverse default-vars)
                         :aux-vars aux-vars
                         :aux-vals aux-vals
-                        :result cont
                         :debug-name (debug-namify
                                      "hairy arg processor for ~A"
                                      (as-debug-name source-name
                 (nvals (cons (leaf-source-name arg) default-vals)))
            (ir1-convert-hairy-args res nvars nvals nvars nvals
                                    (rest vars) nil body aux-vars aux-vals
-                                   cont
                                   source-name debug-name
                                    nil)))
         (t
               (let ((ep (generate-optional-default-entry
                          res default-vars default-vals
                          entry-vars entry-vals vars supplied-p-p body
-                         aux-vars aux-vals cont
+                         aux-vars aux-vals
                         source-name debug-name
                          force)))
                 ;; See GENERATE-OPTIONAL-DEFAULT-ENTRY.
               (ir1-convert-more res default-vars default-vals
                                 entry-vars entry-vals
                                 arg nil nil (rest vars) supplied-p-p body
-                                aux-vars aux-vals cont
+                                aux-vars aux-vals
                                source-name debug-name))
              (:more-context
               (ir1-convert-more res default-vars default-vals
                                 entry-vars entry-vals
                                 nil arg (second vars) (cddr vars) supplied-p-p
-                                body aux-vars aux-vals cont
+                                body aux-vars aux-vals
                                source-name debug-name))
              (:keyword
               (ir1-convert-more res default-vars default-vals
                                 entry-vars entry-vals
                                 nil nil nil vars supplied-p-p body aux-vars
-                                aux-vals cont source-name debug-name)))))))
+                                aux-vals source-name debug-name)))))))
 
 ;;; This function deals with the case where we have to make an
 ;;; OPTIONAL-DISPATCH to represent a LAMBDA. We cons up the result and
 ;;; call IR1-CONVERT-HAIRY-ARGS to do the work. When it is done, we
 ;;; figure out the MIN-ARGS and MAX-ARGS.
-(defun ir1-convert-hairy-lambda (body vars keyp allowp aux-vars aux-vals cont
+(defun ir1-convert-hairy-lambda (body vars keyp allowp aux-vars aux-vals
                                      &key
                                      (source-name '.anonymous.)
                                      (debug-name (debug-namify
                                                   "OPTIONAL-DISPATCH ~S"
                                                   vars)))
-  (declare (list body vars aux-vars aux-vals) (type continuation cont))
+  (declare (list body vars aux-vars aux-vals))
   (let ((res (make-optional-dispatch :arglist vars
                                     :allowp allowp
                                     :keyp keyp
     (aver-live-component *current-component*)
     (push res (component-new-functionals *current-component*))
     (ir1-convert-hairy-args res () () () () vars nil body aux-vars aux-vals
-                           cont source-name debug-name nil)
+                           source-name debug-name nil)
     (setf (optional-dispatch-min-args res) min)
     (setf (optional-dispatch-max-args res)
          (+ (1- (length (optional-dispatch-entry-points res))) min))
 
 ;;; Convert a LAMBDA form into a LAMBDA leaf or an OPTIONAL-DISPATCH leaf.
 (defun ir1-convert-lambda (form &key (source-name '.anonymous.)
-                                    debug-name
-                                    allow-debug-catch-tag)
+                           debug-name
+                           allow-debug-catch-tag)
 
   (unless (consp form)
     (compiler-error "A ~S was found when expecting a lambda expression:~%  ~S"
     (multiple-value-bind (vars keyp allow-other-keys aux-vars aux-vals)
        (make-lambda-vars (cadr form))
       (multiple-value-bind (forms decls) (parse-body (cddr form))
-       (let* ((result-cont (make-continuation))
-              (*lexenv* (process-decls decls
-                                       (append aux-vars vars)
-                                       nil result-cont))
-              (forms (if (and *allow-debug-catch-tag*
-                              (policy *lexenv* (= insert-debug-catch 3)))
-                         `((catch (make-symbol "SB-DEBUG-CATCH-TAG")
-                             ,@forms))
-                         forms))
-              (res (if (or (find-if #'lambda-var-arg-info vars) keyp)
-                       (ir1-convert-hairy-lambda forms vars keyp
-                                                 allow-other-keys
-                                                 aux-vars aux-vals result-cont
-                                                 :source-name source-name
-                                                 :debug-name debug-name)
-                       (ir1-convert-lambda-body forms vars
-                                                :aux-vars aux-vars
-                                                :aux-vals aux-vals
-                                                :result result-cont
-                                                :source-name source-name
-                                                :debug-name debug-name))))
+       (binding* (((*lexenv* result-type)
+                    (process-decls decls (append aux-vars vars) nil))
+                   (forms (if (and *allow-debug-catch-tag*
+                                   (policy *lexenv* (>= insert-debug-catch 2)))
+                              `((catch (make-symbol "SB-DEBUG-CATCH-TAG")
+                                  ,@forms))
+                              forms))
+                   (forms (if (eq result-type *wild-type*)
+                              forms
+                              `((the ,result-type (progn ,@forms)))))
+                   (res (if (or (find-if #'lambda-var-arg-info vars) keyp)
+                            (ir1-convert-hairy-lambda forms vars keyp
+                                                      allow-other-keys
+                                                      aux-vars aux-vals
+                                                      :source-name source-name
+                                                      :debug-name debug-name)
+                            (ir1-convert-lambda-body forms vars
+                                                     :aux-vars aux-vars
+                                                     :aux-vals aux-vals
+                                                     :source-name source-name
+                                                     :debug-name debug-name))))
          (setf (functional-inline-expansion res) form)
          (setf (functional-arg-documentation res) (cadr form))
          res)))))
                          `(() () () . ,(cdr fun)))
     (let ((*lexenv* (make-lexenv
                     :default (process-decls decls nil nil
-                                            (make-continuation)
                                             (make-null-lexenv))
                     :vars (copy-list symbol-macros)
                     :funs (mapcar (lambda (x)