;;; compiler error happens if the syntax is invalid.
;;;
;;; Define a function that converts a special form or other magical
-;;; thing into IR1. LAMBDA-LIST is a defmacro style lambda list.
-;;; START-VAR and CONT-VAR are bound to the start and result
-;;; continuations for the resulting IR1. KIND is the function kind to
-;;; associate with NAME.
-(defmacro def-ir1-translator (name (lambda-list start-var cont-var
+;;; thing into IR1. LAMBDA-LIST is a defmacro style lambda
+;;; list. START-VAR, NEXT-VAR and RESULT-VAR are bound to the start and
+;;; result continuations for the resulting IR1. KIND is the function
+;;; kind to associate with NAME.
+(defmacro def-ir1-translator (name (lambda-list start-var next-var result-var
&key (kind :special-form))
&body body)
(let ((fn-name (symbolicate "IR1-CONVERT-" name))
:error-fun 'convert-condition-into-compiler-error
:wrap-block nil)
`(progn
- (declaim (ftype (function (continuation continuation t) (values))
+ (declaim (ftype (function (ctran ctran (or lvar null) t) (values))
,fn-name))
- (defun ,fn-name (,start-var ,cont-var ,n-form)
+ (defun ,fn-name (,start-var ,next-var ,result-var ,n-form)
(let ((,n-env *lexenv*))
,@decls
,body
(eval-when (#-sb-xc :compile-toplevel :load-toplevel :execute)
;;; Given a DEFTRANSFORM-style lambda-list, generate code that parses
-;;; the arguments of a combination with respect to that lambda-list.
-;;; BODY is the the list of forms which are to be evaluated within the
-;;; bindings. ARGS is the variable that holds list of argument
-;;; continuations. ERROR-FORM is a form which is evaluated when the
-;;; syntax of the supplied arguments is incorrect or a non-constant
-;;; argument keyword is supplied. Defaults and other gunk are ignored.
-;;; The second value is a list of all the arguments bound. We make the
-;;; variables IGNORABLE so that we don't have to manually declare them
-;;; Ignore if their only purpose is to make the syntax work.
+;;; the arguments of a combination with respect to that
+;;; lambda-list. BODY is the the list of forms which are to be
+;;; evaluated within the bindings. ARGS is the variable that holds
+;;; list of argument lvars. ERROR-FORM is a form which is evaluated
+;;; when the syntax of the supplied arguments is incorrect or a
+;;; non-constant argument keyword is supplied. Defaults and other gunk
+;;; are ignored. The second value is a list of all the arguments
+;;; bound. We make the variables IGNORABLE so that we don't have to
+;;; manually declare them Ignore if their only purpose is to make the
+;;; syntax work.
(defun parse-deftransform (lambda-list body args error-form)
(multiple-value-bind (req opt restp rest keyp keys allowp)
(parse-lambda-list lambda-list)
(let* ((var (if (atom spec) spec (first spec)))
(key (keywordicate var)))
(vars var)
- (binds `(,var (find-keyword-continuation ,n-keys ,key)))
+ (binds `(,var (find-keyword-lvar ,n-keys ,key)))
(keywords key))
(let* ((head (first spec))
(var (second head))
(key (first head)))
(vars var)
- (binds `(,var (find-keyword-continuation ,n-keys ,key)))
+ (binds `(,var (find-keyword-lvar ,n-keys ,key)))
(keywords key))))
(let ((n-length (gensym))
;;; LAMBDA-LIST for the resulting lambda.
;;;
;;; We parse the call and bind each of the lambda-list variables to
-;;; the continuation which represents the value of the argument. When
-;;; parsing the call, we ignore the defaults, and always bind the
-;;; variables for unsupplied arguments to NIL. If a required argument
-;;; is missing, an unknown keyword is supplied, or an argument keyword
-;;; is not a constant, then the transform automatically passes. The
+;;; the lvar which represents the value of the argument. When parsing
+;;; the call, we ignore the defaults, and always bind the variables
+;;; for unsupplied arguments to NIL. If a required argument is
+;;; missing, an unknown keyword is supplied, or an argument keyword is
+;;; not a constant, then the transform automatically passes. The
;;; DECLARATIONS apply to the bindings made by DEFTRANSFORM at
;;; transformation time, rather than to the variables of the resulting
;;; lambda. Bound-but-not-referenced warnings are suppressed for the
;;; then it is replaced with the new definition.
;;;
;;; These are the legal keyword options:
-;;; :RESULT - A variable which is bound to the result continuation.
+;;; :RESULT - A variable which is bound to the result lvar.
;;; :NODE - A variable which is bound to the combination node for the call.
;;; :POLICY - A form which is supplied to the POLICY macro to determine
;;; whether this transformation is appropriate. If the result
`((,n-node)
(let* ((,n-args (basic-combination-args ,n-node))
,@(when result
- `((,result (node-cont ,n-node)))))
+ `((,result (node-lvar ,n-node)))))
(multiple-value-bind (,n-lambda ,n-decls)
,parsed-form
(if (and (consp ,n-lambda) (eq (car ,n-lambda) 'lambda))
((eq ,block-var ,n-head) ,result)
,@body))))
-;;; Iterate over the uses of CONTINUATION, binding NODE to each one
+;;; Iterate over the uses of LVAR, binding NODE to each one
;;; successively.
;;;
;;; XXX Could change it not to replicate the code someday perhaps...
-(defmacro do-uses ((node-var continuation &optional result) &body body)
- (once-only ((n-cont continuation))
- `(ecase (continuation-kind ,n-cont)
- (:unused)
- (:inside-block
- (block nil
- (let ((,node-var (continuation-use ,n-cont)))
- ,@body
- ,result)))
- ((:block-start :deleted-block-start)
- (dolist (,node-var (block-start-uses (continuation-block ,n-cont))
- ,result)
- ,@body)))))
+(defmacro do-uses ((node-var lvar &optional result) &body body)
+ (with-unique-names (uses)
+ `(let ((,uses (lvar-uses ,lvar)))
+ (if (listp ,uses)
+ (dolist (,node-var ,uses ,result)
+ ,@body)
+ (block nil
+ (let ((,node-var ,uses))
+ ,@body))))))
;;; Iterate over the nodes in BLOCK, binding NODE-VAR to the each node
-;;; and CONT-VAR to the node's CONT. The only keyword option is
+;;; and LVAR-VAR to the node's LVAR. The only keyword option is
;;; RESTART-P, which causes iteration to be restarted when a node is
;;; deleted out from under us. (If not supplied, this is an error.)
;;;
-;;; In the forward case, we terminate on LAST-CONT so that we don't
-;;; have to worry about our termination condition being changed when
-;;; new code is added during the iteration. In the backward case, we
-;;; do NODE-PREV before evaluating the body so that we can keep going
-;;; when the current node is deleted.
+;;; In the forward case, we terminate when NODE does not have NEXT, so
+;;; that we do not have to worry about our termination condition being
+;;; changed when new code is added during the iteration. In the
+;;; backward case, we do NODE-PREV before evaluating the body so that
+;;; we can keep going when the current node is deleted.
;;;
;;; When RESTART-P is supplied to DO-NODES, we start iterating over
-;;; again at the beginning of the block when we run into a
-;;; continuation whose block differs from the one we are trying to
-;;; iterate over, either because the block was split, or because a
-;;; node was deleted out from under us (hence its block is NIL.) If
-;;; the block start is deleted, we just punt. With RESTART-P, we are
-;;; also more careful about termination, re-indirecting the BLOCK-LAST
-;;; each time.
-(defmacro do-nodes ((node-var cont-var block &key restart-p) &body body)
- (let ((n-block (gensym))
- (n-last-cont (gensym)))
- `(let* ((,n-block ,block)
- ,@(unless restart-p
- `((,n-last-cont (node-cont (block-last ,n-block))))))
- (do* ((,node-var (continuation-next (block-start ,n-block))
- ,(if restart-p
- `(cond
- ((eq (continuation-block ,cont-var) ,n-block)
- (aver (continuation-next ,cont-var))
- (continuation-next ,cont-var))
- (t
- (let ((start (block-start ,n-block)))
- (unless (eq (continuation-kind start)
- :block-start)
- (return nil))
- (continuation-next start))))
- `(continuation-next ,cont-var)))
- (,cont-var (node-cont ,node-var) (node-cont ,node-var)))
- (())
- (declare (type node ,node-var))
- ,@body
- (when ,(if restart-p
- `(or (eq ,node-var (block-last ,n-block))
- (block-delete-p ,n-block))
- `(eq ,cont-var ,n-last-cont))
- (return nil))))))
+;;; again at the beginning of the block when we run into a ctran whose
+;;; block differs from the one we are trying to iterate over, either
+;;; because the block was split, or because a node was deleted out
+;;; from under us (hence its block is NIL.) If the block start is
+;;; deleted, we just punt. With RESTART-P, we are also more careful
+;;; about termination, re-indirecting the BLOCK-LAST each time.
+(defmacro do-nodes ((node-var lvar-var block &key restart-p)
+ &body body)
+ (with-unique-names (n-block n-start)
+ `(do* ((,n-block ,block)
+ (,n-start (block-start ,n-block))
+
+ (,node-var (ctran-next ,n-start)
+ ,(if restart-p
+ `(let ((next (node-next ,node-var)))
+ (cond
+ ((not next)
+ (return))
+ ((eq (ctran-block next) ,n-block)
+ (ctran-next next))
+ (t
+ (let ((start (block-start ,n-block)))
+ (unless (eq (ctran-kind start)
+ :block-start)
+ (return nil))
+ (ctran-next start)))))
+ `(acond ((node-next ,node-var)
+ (ctran-next it))
+ (t (return)))))
+ ,@(when lvar-var
+ `((,lvar-var #1=(when (valued-node-p ,node-var)
+ (node-lvar ,node-var))
+ #1#))))
+ (nil)
+ ,@body
+ ,@(when restart-p
+ `((when (block-delete-p ,n-block)
+ (return)))))))
+
;;; like DO-NODES, only iterating in reverse order
-(defmacro do-nodes-backwards ((node-var cont-var block) &body body)
+(defmacro do-nodes-backwards ((node-var lvar block) &body body)
(let ((n-block (gensym))
(n-start (gensym))
- (n-last (gensym))
- (n-next (gensym)))
- `(let* ((,n-block ,block)
- (,n-start (block-start ,n-block))
- (,n-last (block-last ,n-block)))
- (do* ((,cont-var (node-cont ,n-last) ,n-next)
- (,node-var ,n-last (continuation-use ,cont-var))
- (,n-next (node-prev ,node-var) (node-prev ,node-var)))
- (())
- ,@body
- (when (eq ,n-next ,n-start)
- (return nil))))))
-
-(defmacro do-nodes-carefully ((node-var cont-var block) &body body)
- (with-unique-names (n-block n-last)
+ (n-prev (gensym)))
+ `(do* ((,n-block ,block)
+ (,n-start (block-start ,n-block))
+ (,node-var (block-last ,n-block) (ctran-use ,n-prev))
+ (,n-prev (node-prev ,node-var) (node-prev ,node-var))
+ (,lvar #1=(when (valued-node-p ,node-var) (node-lvar ,node-var))
+ #1#))
+ (nil)
+ ,@body
+ (when (eq ,n-prev ,n-start)
+ (return nil)))))
+
+(defmacro do-nodes-carefully ((node-var block) &body body)
+ (with-unique-names (n-block n-ctran)
`(loop with ,n-block = ,block
- with ,n-last = (block-last ,n-block)
- for ,cont-var = (block-start ,n-block) then (node-cont ,node-var)
- for ,node-var = (and ,cont-var (continuation-next ,cont-var))
+ for ,n-ctran = (block-start ,n-block) then (node-next ,node-var)
+ for ,node-var = (and ,n-ctran (ctran-next ,n-ctran))
while ,node-var
- do (progn ,@body)
- until (eq ,node-var ,n-last))))
+ do (progn ,@body))))
;;; Bind the IR1 context variables to the values associated with NODE,
;;; so that new, extra IR1 conversion related to NODE can be done
projects / sbcl.git / blobdiff