,(if (policy *lexenv* (zerop verify-arg-count))
`(declare (ignore ,n-supplied))
`(%verify-arg-count ,n-supplied ,nargs))
- (locally
- (declare (optimize (merge-tail-calls 3)))
- (%funcall ,fun ,@temps)))))
+ (%funcall ,fun ,@temps))))
(optional-dispatch
(let* ((min (optional-dispatch-min-args fun))
(max (optional-dispatch-max-args fun))
,(with-unique-names (n-context n-count)
`(multiple-value-bind (,n-context ,n-count)
(%more-arg-context ,n-supplied ,max)
- (locally
- (declare (optimize (merge-tail-calls 3)))
- (%funcall ,more ,@temps ,n-context ,n-count)))))))
+ (%funcall ,more ,@temps ,n-context ,n-count))))))
(t
(%arg-count-error ,n-supplied)))))))))
component)))))
(locall-analyze-fun-1 functional)
(when (lambda-p functional)
- (maybe-let-convert functional)))))))
+ (maybe-let-convert functional component)))))))
(values))
(defun locall-analyze-clambdas-until-done (clambdas)
(lexenv-policy (node-lexenv call))))))
(values))
+;;; Convenience function to mark local calls as known bad.
+(defun transform-call-with-ir1-environment (node lambda default-name)
+ (aver (combination-p node))
+ (with-ir1-environment-from-node node
+ (transform-call node lambda
+ (or (combination-fun-source-name node nil)
+ default-name))))
+
+(defun warn-invalid-local-call (node count &rest warn-arguments)
+ (aver (combination-p node))
+ (aver (typep count 'unsigned-byte))
+ (apply 'warn warn-arguments)
+ (transform-call-with-ir1-environment node
+ `(lambda (&rest args)
+ (declare (ignore args))
+ (%arg-count-error ,count))
+ '%arg-count-error))
+
;;; Attempt to convert a call to a lambda. If the number of args is
;;; wrong, we give a warning and mark the call as :ERROR to remove it
;;; from future consideration. If the argcount is O.K. then we just
(cond ((= n-call-args nargs)
(convert-call ref call fun))
(t
- (warn
+ (warn-invalid-local-call call n-call-args
'local-argument-mismatch
:format-control
"function called with ~R argument~:P, but wants exactly ~R"
- :format-arguments (list n-call-args nargs))
- (setf (basic-combination-kind call) :error)))))
+ :format-arguments (list n-call-args nargs))))))
\f
;;;; &OPTIONAL, &MORE and &KEYWORD calls
(max-args (optional-dispatch-max-args fun))
(call-args (length (combination-args call))))
(cond ((< call-args min-args)
- (warn
+ (warn-invalid-local-call call call-args
'local-argument-mismatch
:format-control
"function called with ~R argument~:P, but wants at least ~R"
- :format-arguments (list call-args min-args))
- (setf (basic-combination-kind call) :error))
+ :format-arguments (list call-args min-args)))
((<= call-args max-args)
(convert-call ref call
(let ((*current-component* (node-component ref)))
((optional-dispatch-more-entry fun)
(convert-more-call ref call fun))
(t
- (warn
+ (warn-invalid-local-call call call-args
'local-argument-mismatch
:format-control
"function called with ~R argument~:P, but wants at most ~R"
:format-arguments
- (list call-args max-args))
- (setf (basic-combination-kind call) :error))))
+ (list call-args max-args)))))
(values))
;;; This function is used to convert a call to an entry point when
(when (oddp (length more))
(compiler-warn "function called with odd number of ~
arguments in keyword portion")
- (setf (basic-combination-kind call) :error)
+ (transform-call-with-ir1-environment
+ call
+ `(lambda (&rest args)
+ (declare (ignore args))
+ (%odd-key-args-error))
+ '%odd-key-args-error)
(return-from convert-more-call))
(do ((key more (cddr key))
(when (and loser (not (optional-dispatch-allowp fun)) (not allowp))
(compiler-warn "function called with unknown argument keyword ~S"
(car loser))
- (setf (basic-combination-kind call) :error)
+ (transform-call-with-ir1-environment
+ call
+ `(lambda (&rest args)
+ (declare (ignore args))
+ (%unknown-key-arg-error ',(car loser)))
+ '%unknown-key-arg-error)
(return-from convert-more-call)))
(collect ((call-args))
(call-args t)))
(:rest
(call-args `(list ,@more-temps))
+ ;; &REST arguments may be accompanied by extra
+ ;; context and count arguments. We know this by
+ ;; the ARG-INFO-DEFAULT. Supply 0 and 0 or
+ ;; don't convert at all depending.
+ (let ((more (arg-info-default info)))
+ (when more
+ (unless (eq t more)
+ (destructuring-bind (context count &optional used) more
+ (declare (ignore context count))
+ (when used
+ ;; We've already converted to use the more context
+ ;; instead of the rest list.
+ (return-from convert-more-call))))
+ (call-args 0)
+ (call-args 0)
+ (setf (arg-info-default info) t)))
(return))
(:keyword
(return)))
(convert-hairy-fun-entry ref call (optional-dispatch-main-entry fun)
(append temps more-temps)
(ignores) (call-args)
- more-temps))))
+ (when (optional-rest-p fun)
+ more-temps)))))
(values))
\f
;; with anonymous things, and suppressing inlining
;; for such things can easily give Python acute indigestion, so
;; we don't.)
- (when (leaf-has-source-name-p clambda)
+ ;;
+ ;; A functional that is already inline-expanded in this componsne definitely
+ ;; deserves let-conversion -- and in case of main entry points for inline
+ ;; expanded optional dispatch, the main-etry isn't explicitly marked :INLINE
+ ;; even if the function really is.
+ (when (and (leaf-has-source-name-p clambda)
+ (not (functional-inline-expanded clambda)))
;; ANSI requires that explicit NOTINLINE be respected.
(or (eq (lambda-inlinep clambda) :notinline)
;; If (= LET-CONVERSION 0) we can guess that inlining
(eq (component-kind (lambda-component fun))
:initial)))))
+;;; ir1opt usually takes care of forwarding let-bound values directly
+;;; to their destination when possible. However, locall analysis
+;;; greatly benefits from that transformation, and is executed in a
+;;; distinct phase from ir1opt. After let-conversion, variables
+;;; bound to functional values are immediately substituted away.
+;;;
+;;; When called from locall, component is non-nil, and the functionals
+;;; are marked for reanalysis when appropriate.
+(defun substitute-let-funargs (call fun component)
+ (declare (type combination call) (type clambda fun)
+ (type (or null component) component))
+ (loop for arg in (combination-args call)
+ and var in (lambda-vars fun)
+ ;; only do that in the absence of assignment
+ when (and arg (null (lambda-var-sets var)))
+ do
+ (binding* ((use (lvar-uses arg))
+ (() (ref-p use) :exit-if-null)
+ (leaf (ref-leaf use))
+ (done-something nil))
+ ;; unlike propagate-let-args, we're only concerned with
+ ;; functionals.
+ (cond ((not (functional-p leaf)))
+ ;; if the types match, we can mutate refs to point to
+ ;; the functional instead of var
+ ((csubtypep (single-value-type (node-derived-type use))
+ (leaf-type var))
+ (let ((use-component (node-component use)))
+ (substitute-leaf-if
+ (lambda (ref)
+ (cond ((eq (node-component ref) use-component)
+ (setf done-something t))
+ (t
+ (aver (lambda-toplevelish-p (lambda-home fun)))
+ nil)))
+ leaf var)))
+ ;; otherwise, we can still play LVAR-level tricks for single
+ ;; destination variables.
+ ((and (singleton-p (leaf-refs var))
+ ;; Don't substitute single-ref variables on high-debug /
+ ;; low speed, to improve the debugging experience.
+ (not (preserve-single-use-debug-var-p call var)))
+ (setf done-something t)
+ (substitute-single-use-lvar arg var)))
+ ;; if we've done something, the functional may now be used in
+ ;; more analysis-friendly manners. Enqueue it if we're in
+ ;; locall.
+ (when (and done-something
+ component
+ (member leaf (component-lambdas component)))
+ (pushnew leaf (component-reanalyze-functionals component)))))
+ (values))
+
;;; This function is called when there is some reason to believe that
;;; CLAMBDA might be converted into a LET. This is done after local
;;; call analysis, and also when a reference is deleted. We return
;;; true if we converted.
-(defun maybe-let-convert (clambda)
- (declare (type clambda clambda))
+;;;
+;;; COMPONENT is non-nil during local call analysis. It is used to
+;;; re-enqueue functionals for reanalysis when they have been forwarded
+;;; directly to destination nodes.
+(defun maybe-let-convert (clambda &optional component)
+ (declare (type clambda clambda)
+ (type (or null component) component))
(unless (or (declarations-suppress-let-conversion-p clambda)
(functional-has-external-references-p clambda))
;; We only convert to a LET when the function is a normal local
(let-convert clambda dest))
(reoptimize-call dest)
(setf (functional-kind clambda)
- (if (mv-combination-p dest) :mv-let :let))))
+ (if (mv-combination-p dest) :mv-let :let))
+ (when (combination-p dest) ; mv-combinations are too hairy
+ ; for me to handle - PK 2012-05-30
+ (substitute-let-funargs dest clambda component))))
t))))
\f
;;;; tail local calls and assignments
projects / sbcl.git / blobdiff