X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Ftypetran.lisp;h=2ec8bc61e6340e273b6d6518fe2d54d5838da558;hb=9489abab7f981b8eea2aec8a883f2eb48d4cb138;hp=03b4c0b5f6e95b6dcc63880c2ebd016979e7d712;hpb=e33fb894f991b2926d8f3bace9058e4c0b2c3a37;p=sbcl.git diff --git a/src/compiler/typetran.lisp b/src/compiler/typetran.lisp index 03b4c0b..2ec8bc6 100644 --- a/src/compiler/typetran.lisp +++ b/src/compiler/typetran.lisp @@ -72,6 +72,8 @@ nil) ((csubtypep otype type) t) + ((eq type *empty-type*) + nil) (t (give-up-ir1-transform))))) @@ -81,7 +83,7 @@ (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 @@ -97,11 +99,10 @@ ;;; 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)))) ;;;; standard type predicates, i.e. those defined in package COMMON-LISP, @@ -154,7 +155,6 @@ ;;; 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)) @@ -163,55 +163,12 @@ (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 @@ -243,8 +200,8 @@ ,(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) @@ -271,10 +228,15 @@ (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 @@ -310,10 +272,8 @@ (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)) @@ -385,11 +345,11 @@ ;;; 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. -(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))) @@ -402,7 +362,7 @@ ((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)) @@ -420,8 +380,8 @@ (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) @@ -430,7 +390,7 @@ `((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))) @@ -468,9 +428,9 @@ (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 @@ -493,13 +453,19 @@ ;; 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 @@ -507,14 +473,14 @@ (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)) (typecase type (numeric-type (source-transform-numeric-typep object type)) - (sb!xc:class + (classoid `(%instance-typep ,object ,spec)) (array-type (source-transform-array-typep object type)) @@ -526,10 +492,10 @@ ;;;; coercion -(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 @@ -537,12 +503,22 @@ `(the ,(continuation-value type) ,(cond ((csubtypep tspec (specifier-type 'double-float)) - '(%double-float x)) + '(%double-float x)) ;; FIXME: #!+long-float (t ,(error "LONG-FLOAT case needed")) ((csubtypep tspec (specifier-type 'float)) '(%single-float x)) - ((csubtypep tspec (specifier-type 'simple-vector)) - '(coerce-to-simple-vector 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))))))) +