;;;; provided with absolutely no warranty. See the COPYING and CREDITS
;;;; files for more information.
-;;; FIXME: Many of the functions in this file could probably be
-;;; byte-compiled, since they're one-pass, cons-heavy code.
-
(in-package "SB!C")
\f
;;;; type predicate translation
nil)
((csubtypep otype type)
t)
+ ((eq type *empty-type*)
+ nil)
(t
(give-up-ir1-transform)))))
;;; Flush %TYPEP tests whose result is known at compile time.
(deftransform %typep ((object type))
- (unless (constant-continuation-p type) (give-up-ir1-transform))
+ (unless (constant-continuation-p type)
+ (give-up-ir1-transform))
(ir1-transform-type-predicate
object
- (specifier-type (continuation-value type))))
+ (ir1-transform-specifier-type (continuation-value type))))
;;; This is the IR1 transform for simple type predicates. It checks
;;; whether the single argument is known to (not) be of the
;;; appropriate type, expanding to T or NIL as appropriate.
(deftransform fold-type-predicate ((object) * * :node node :defun-only t)
- (let ((ctype (gethash (leaf-name
+ (let ((ctype (gethash (leaf-source-name
(ref-leaf
(continuation-use
(basic-combination-fun node))))
;;; If FIND-CLASS is called on a constant class, locate the CLASS-CELL
;;; at load time.
-(deftransform find-class ((name) ((constant-argument symbol)) *
- :when :both)
+(deftransform find-classoid ((name) ((constant-arg symbol)) *)
(let* ((name (continuation-value name))
- (cell (find-class-cell name)))
- `(or (class-cell-class ',cell)
+ (cell (find-classoid-cell name)))
+ `(or (classoid-cell-classoid ',cell)
(error "class not yet defined: ~S" name))))
\f
;;;; standard type predicates, i.e. those defined in package COMMON-LISP,
;;;;
;;;; See also VM dependent transforms.
-(def-source-transform atom (x)
+(define-source-transform atom (x)
`(not (consp ,x)))
\f
;;;; TYPEP source transform
;;; binds specified by TYPE. BASE is the name of the base type, for
;;; declaration. We make SAFETY locally 0 to inhibit any checking of
;;; this assertion.
-#!-negative-zero-is-not-zero
(defun transform-numeric-bound-test (n-object type base)
(declare (type numeric-type type))
(let ((low (numeric-type-low type))
(declare (optimize (safety 0)))
(and ,@(when low
(if (consp low)
- `((> (the ,base ,n-object) ,(car low)))
- `((>= (the ,base ,n-object) ,low))))
+ `((> (truly-the ,base ,n-object) ,(car low)))
+ `((>= (truly-the ,base ,n-object) ,low))))
,@(when high
(if (consp high)
- `((< (the ,base ,n-object) ,(car high)))
- `((<= (the ,base ,n-object) ,high))))))))
-
-#!+negative-zero-is-not-zero
-(defun transform-numeric-bound-test (n-object type base)
- (declare (type numeric-type type))
- (let ((low (numeric-type-low type))
- (high (numeric-type-high type))
- (float-type-p (csubtypep type (specifier-type 'float)))
- (x (gensym))
- (y (gensym)))
- `(locally
- (declare (optimize (safety 0)))
- (and ,@(when low
- (if (consp low)
- `((let ((,x (the ,base ,n-object))
- (,y ,(car low)))
- ,(if (not float-type-p)
- `(> ,x ,y)
- `(if (and (zerop ,x) (zerop ,y))
- (> (float-sign ,x) (float-sign ,y))
- (> ,x ,y)))))
- `((let ((,x (the ,base ,n-object))
- (,y ,low))
- ,(if (not float-type-p)
- `(>= ,x ,y)
- `(if (and (zerop ,x) (zerop ,y))
- (>= (float-sign ,x) (float-sign ,y))
- (>= ,x ,y)))))))
- ,@(when high
- (if (consp high)
- `((let ((,x (the ,base ,n-object))
- (,y ,(car high)))
- ,(if (not float-type-p)
- `(< ,x ,y)
- `(if (and (zerop ,x) (zerop ,y))
- (< (float-sign ,x) (float-sign ,y))
- (< ,x ,y)))))
- `((let ((,x (the ,base ,n-object))
- (,y ,high))
- ,(if (not float-type-p)
- `(<= ,x ,y)
- `(if (and (zerop ,x) (zerop ,y))
- (<= (float-sign ,x) (float-sign ,y))
- (<= ,x ,y)))))))))))
+ `((< (truly-the ,base ,n-object) ,(car high)))
+ `((<= (truly-the ,base ,n-object) ,high))))))))
;;; Do source transformation of a test of a known numeric type. We can
;;; assume that the type doesn't have a corresponding predicate, since
,(transform-numeric-bound-test n-object type base)))
(:complex
`(and (complexp ,n-object)
- ,(once-only ((n-real `(realpart (the complex ,n-object)))
- (n-imag `(imagpart (the complex ,n-object))))
+ ,(once-only ((n-real `(realpart (truly-the complex ,n-object)))
+ (n-imag `(imagpart (truly-the complex ,n-object))))
`(progn
,n-imag ; ignorable
(and (typep ,n-real ',base)
(satisfies `(if (funcall #',(second spec) ,object) t nil))
((not and)
(once-only ((n-obj object))
- `(,(first spec) ,@(mapcar #'(lambda (x)
- `(typep ,n-obj ',x))
+ `(,(first spec) ,@(mapcar (lambda (x)
+ `(typep ,n-obj ',x))
(rest spec))))))))))
+(defun source-transform-negation-typep (object type)
+ (declare (type negation-type type))
+ (let ((spec (type-specifier (negation-type-type type))))
+ `(not (typep ,object ',spec))))
+
;;; Do source transformation for TYPEP of a known union type. If a
;;; union type contains LIST, then we pull that out and make it into a
;;; single LISTP call. Note that if SYMBOL is in the union, then LIST
(defun source-transform-cons-typep (object type)
(let* ((car-type (cons-type-car-type type))
(cdr-type (cons-type-cdr-type type)))
- (let ((car-test-p (not (or (type= car-type *wild-type*)
- (type= car-type (specifier-type t)))))
- (cdr-test-p (not (or (type= cdr-type *wild-type*)
- (type= cdr-type (specifier-type t))))))
+ (let ((car-test-p (not (type= car-type *universal-type*)))
+ (cdr-test-p (not (type= cdr-type *universal-type*))))
(if (and (not car-test-p) (not cdr-test-p))
`(consp ,object)
(once-only ((n-obj object))
;;; then we also check whether the layout for the object is invalid
;;; and signal an error if so. Otherwise, look up the indirect
;;; class-cell and call CLASS-CELL-TYPEP at runtime.
-;;;
-;;; KLUDGE: The :WHEN :BOTH option here is probably a suboptimal
-;;; solution to the problem of %INSTANCE-TYPEP forms in byte compiled
-;;; code; it'd probably be better just to have %INSTANCE-TYPEP forms
-;;; never be generated in byte compiled code, or maybe to have a DEFUN
-;;; %INSTANCE-TYPEP somewhere to handle them if they are. But it's not
-;;; terribly important because mostly, %INSTANCE-TYPEP forms *aren't*
-;;; generated in byte compiled code. (As of sbcl-0.6.5, they could
-;;; sometimes be generated when byte compiling inline functions, but
-;;; it's quite uncommon.) -- WHN 20000523
-(deftransform %instance-typep ((object spec) (* *) * :node node :when :both)
+(deftransform %instance-typep ((object spec) (* *) * :node node)
(aver (constant-continuation-p spec))
(let* ((spec (continuation-value spec))
(class (specifier-type spec))
- (name (sb!xc:class-name class))
+ (name (classoid-name class))
(otype (continuation-type object))
(layout (let ((res (info :type :compiler-layout name)))
(if (and res (not (layout-invalid res)))
((csubtypep otype class)
t)
;; If not properly named, error.
- ((not (and name (eq (sb!xc:find-class name) class)))
+ ((not (and name (eq (find-classoid name) class)))
(compiler-error "can't compile TYPEP of anonymous or undefined ~
class:~% ~S"
class))
(t
(values '(lambda (x) (declare (ignore x)) t) 'layout-of)))
(cond
- ((and (eq (class-state class) :sealed) layout
- (not (class-subclasses class)))
+ ((and (eq (classoid-state class) :sealed) layout
+ (not (classoid-subclasses class)))
;; Sealed and has no subclasses.
(let ((n-layout (gensym)))
`(and (,pred object)
`((when (layout-invalid ,n-layout)
(%layout-invalid-error object ',layout))))
(eq ,n-layout ',layout)))))
- ((and (typep class 'basic-structure-class) layout)
+ ((and (typep class 'basic-structure-classoid) layout)
;; structure type tests; hierarchical layout depths
(let ((depthoid (layout-depthoid layout))
(n-layout (gensym)))
(t
(/noshow "default case -- ,PRED and CLASS-CELL-TYPEP")
`(and (,pred object)
- (class-cell-typep (,get-layout object)
- ',(find-class-cell name)
- object)))))))))
+ (classoid-cell-typep (,get-layout object)
+ ',(find-classoid-cell name)
+ object)))))))))
;;; If the specifier argument is a quoted constant, then we consider
;;; converting into a simple predicate or other stuff. If the type is
;;; If the type is TYPE= to a type that has a predicate, then expand
;;; to that predicate. Otherwise, we dispatch off of the type's type.
;;; These transformations can increase space, but it is hard to tell
-;;; when, so we ignore policy and always do them. When byte-compiling,
-;;; we only do transforms that have potential for control
-;;; simplification. Instance type tests are converted to
-;;; %INSTANCE-TYPEP to allow type propagation.
-(def-source-transform typep (object spec)
+;;; when, so we ignore policy and always do them.
+(define-source-transform typep (object spec)
;; KLUDGE: It looks bad to only do this on explicitly quoted forms,
;; since that would overlook other kinds of constants. But it turns
;; out that the DEFTRANSFORM for TYPEP detects any constant
;; source transform another chance, so it all works out OK, in a
;; weird roundabout way. -- WHN 2001-03-18
(if (and (consp spec) (eq (car spec) 'quote))
- (let ((type (specifier-type (cadr spec))))
- (or (let ((pred (cdr (assoc type *backend-type-predicates*
+ (let ((type (careful-specifier-type (cadr spec))))
+ (or (when (not type)
+ (compiler-warn "illegal type specifier for TYPEP: ~S"
+ (cadr spec))
+ `(%typep ,object ,spec))
+ (let ((pred (cdr (assoc type *backend-type-predicates*
:test #'type=))))
(when pred `(,pred ,object)))
(typecase type
(hairy-type
(source-transform-hairy-typep object type))
+ (negation-type
+ (source-transform-negation-typep object type))
(union-type
(source-transform-union-typep object type))
(intersection-type
(member-type
`(member ,object ',(member-type-members type)))
(args-type
- (compiler-warning "illegal type specifier for TYPEP: ~S"
- (cadr spec))
+ (compiler-warn "illegal type specifier for TYPEP: ~S"
+ (cadr spec))
`(%typep ,object ,spec))
(t nil))
- (and (not (byte-compiling))
- (typecase type
- (numeric-type
- (source-transform-numeric-typep object type))
- (sb!xc:class
- `(%instance-typep ,object ,spec))
- (array-type
- (source-transform-array-typep object type))
- (cons-type
- (source-transform-cons-typep object type))
- (t nil)))
+ (typecase type
+ (numeric-type
+ (source-transform-numeric-typep object type))
+ (classoid
+ `(%instance-typep ,object ,spec))
+ (array-type
+ (source-transform-array-typep object type))
+ (cons-type
+ (source-transform-cons-typep object type))
+ (t nil))
`(%typep ,object ,spec)))
(values nil t)))
\f
;;;; coercion
-;;; old working version
-(deftransform coerce ((x type) (* *) * :when :both)
+(deftransform coerce ((x type) (* *) * :node node)
(unless (constant-continuation-p type)
(give-up-ir1-transform))
- (let ((tspec (specifier-type (continuation-value type))))
+ (let ((tspec (ir1-transform-specifier-type (continuation-value type))))
(if (csubtypep (continuation-type x) tspec)
'x
+ ;; Note: The THE here makes sure that specifiers like
+ ;; (SINGLE-FLOAT 0.0 1.0) can raise a TYPE-ERROR.
`(the ,(continuation-value type)
- ,(cond ((csubtypep tspec (specifier-type 'double-float))
- '(%double-float x))
- ;; FIXME: If LONG-FLOAT is to be supported, we
- ;; need to pick it off here before falling through
- ;; to %SINGLE-FLOAT.
- ((csubtypep tspec (specifier-type 'float))
- '(%single-float x))
- (t
- (give-up-ir1-transform)))))))
+ ,(cond
+ ((csubtypep tspec (specifier-type 'double-float))
+ '(%double-float x))
+ ;; FIXME: #!+long-float (t ,(error "LONG-FLOAT case needed"))
+ ((csubtypep tspec (specifier-type 'float))
+ '(%single-float x))
+ ((and (csubtypep tspec (specifier-type 'simple-vector))
+ ;; Can we avoid checking for dimension issues like
+ ;; (COERCE FOO '(SIMPLE-VECTOR 5)) returning a
+ ;; vector of length 6?
+ (or (policy node (< safety 3)) ; no need in unsafe code
+ (and (array-type-p tspec) ; no need when no dimensions
+ (equal (array-type-dimensions tspec) '(*)))))
+ `(if (simple-vector-p x)
+ x
+ (replace (make-array (length x)) x)))
+ ;; FIXME: other VECTOR types?
+ (t
+ (give-up-ir1-transform)))))))
+
-;;; KLUDGE: new broken version -- 20000504
-;;; FIXME: should be fixed or deleted
-#+nil
-(deftransform coerce ((x type) (* *) * :when :both)
- (unless (constant-continuation-p type)
- (give-up-ir1-transform))
- (let ((tspec (specifier-type (continuation-value type))))
- (if (csubtypep (continuation-type x) tspec)
- 'x
- `(if #+nil (typep x type) #-nil nil
- x
- (the ,(continuation-value type)
- ,(cond ((csubtypep tspec (specifier-type 'double-float))
- '(%double-float x))
- ;; FIXME: If LONG-FLOAT is to be supported,
- ;; we need to pick it off here before falling
- ;; through to %SINGLE-FLOAT.
- ((csubtypep tspec (specifier-type 'float))
- '(%single-float x))
- #+nil
- ((csubtypep tspec (specifier-type 'list))
- '(coerce-to-list x))
- #+nil
- ((csubtypep tspec (specifier-type 'string))
- '(coerce-to-simple-string x))
- #+nil
- ((csubtypep tspec (specifier-type 'bit-vector))
- '(coerce-to-bit-vector x))
- #+nil
- ((csubtypep tspec (specifier-type 'vector))
- '(coerce-to-vector x type))
- (t
- (give-up-ir1-transform))))))))
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