source: branches/generic-class-file/abcl/src/org/armedbear/lisp/jvm.lisp @ 12884

Last change on this file since 12884 was 12884, checked in by ehuelsmann, 13 years ago

Clean up after migration of fields and the pool.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 24.0 KB
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1;;; jvm.lisp
2;;;
3;;; Copyright (C) 2003-2008 Peter Graves
4;;; $Id: jvm.lisp 12884 2010-08-09 14:10:50Z ehuelsmann $
5;;;
6;;; This program is free software; you can redistribute it and/or
7;;; modify it under the terms of the GNU General Public License
8;;; as published by the Free Software Foundation; either version 2
9;;; of the License, or (at your option) any later version.
10;;;
11;;; This program is distributed in the hope that it will be useful,
12;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14;;; GNU General Public License for more details.
15;;;
16;;; You should have received a copy of the GNU General Public License
17;;; along with this program; if not, write to the Free Software
18;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
19;;;
20;;; As a special exception, the copyright holders of this library give you
21;;; permission to link this library with independent modules to produce an
22;;; executable, regardless of the license terms of these independent
23;;; modules, and to copy and distribute the resulting executable under
24;;; terms of your choice, provided that you also meet, for each linked
25;;; independent module, the terms and conditions of the license of that
26;;; module.  An independent module is a module which is not derived from
27;;; or based on this library.  If you modify this library, you may extend
28;;; this exception to your version of the library, but you are not
29;;; obligated to do so.  If you do not wish to do so, delete this
30;;; exception statement from your version.
31
32(in-package "JVM")
33
34(export '(compile-defun *catch-errors* jvm-compile-package
35          derive-compiler-type))
36
37(eval-when (:compile-toplevel :load-toplevel :execute)
38  (require "LOOP")
39  (require "FORMAT")
40  (require "CLOS")
41  (require "PRINT-OBJECT")
42  (require "COMPILER-TYPES")
43  (require "COMPILER-ERROR")
44  (require "KNOWN-FUNCTIONS")
45  (require "DUMP-FORM")
46  (require "JVM-INSTRUCTIONS")
47  (require "JVM-CLASS-FILE")
48  (require "KNOWN-SYMBOLS")
49  (require "JAVA")
50  (require "COMPILER-PASS1")
51  (require "COMPILER-PASS2"))
52
53(defvar *closure-variables* nil)
54
55(defvar *enable-dformat* nil)
56
57#+nil
58(defun dformat (destination control-string &rest args)
59  (when *enable-dformat*
60    (apply #'sys::%format destination control-string args)))
61
62(defmacro dformat (&rest ignored)
63  (declare (ignore ignored)))
64
65(declaim (inline u2 s1 s2))
66
67(defknown u2 (fixnum) cons)
68(defun u2 (n)
69  (declare (optimize speed))
70  (declare (type (unsigned-byte 16) n))
71  (when (not (<= 0 n 65535))
72    (error "u2 argument ~A out of 65k range." n))
73  (list (logand (ash n -8) #xff)
74        (logand n #xff)))
75
76(defknown s1 (fixnum) fixnum)
77(defun s1 (n)
78  (declare (optimize speed))
79  (declare (type (signed-byte 8) n))
80  (when (not (<= -128 n 127))
81    (error "s2 argument ~A out of 16-bit signed range." n))
82  (if (< n 0)
83      (1+ (logxor (- n) #xFF))
84      n))
85
86
87(defknown s2 (fixnum) cons)
88(defun s2 (n)
89  (declare (optimize speed))
90  (declare (type (signed-byte 16) n))
91  (when (not (<= -32768 n 32767))
92    (error "s2 argument ~A out of 16-bit signed range." n))
93  (u2 (if (< n 0) (1+ (logxor (- n) #xFFFF))
94          n)))
95
96
97
98
99
100(defmacro with-saved-compiler-policy (&body body)
101  "Saves compiler policy variables, restoring them after evaluating `body'."
102  `(let ((*speed* *speed*)
103         (*space* *space*)
104         (*safety* *safety*)
105         (*debug* *debug*)
106         (*explain* *explain*)
107         (*inline-declarations* *inline-declarations*))
108     ,@body))
109
110
111
112(defvar *compiler-debug* nil)
113
114(defvar *pool* nil)
115(defvar *static-code* ())
116(defvar *class-file* nil)
117
118(defvar *externalized-objects* nil)
119(defvar *declared-functions* nil)
120
121(defstruct (abcl-class-file (:include class-file)
122                            (:constructor %make-abcl-class-file))
123  pathname ; pathname of output file
124  lambda-name
125  lambda-list ; as advertised
126  pool
127  (pool-count 1)
128  (pool-entries (make-hash-table :test #'equal))
129  static-code
130  objects ;; an alist of externalized objects and their field names
131  (functions (make-hash-table :test 'equal)) ;; because of (SETF ...) functions
132  )
133
134(defun class-name-from-filespec (filespec)
135  (let* ((name (pathname-name filespec)))
136    (declare (type string name))
137    (dotimes (i (length name))
138      (declare (type fixnum i))
139      (when (or (char= (char name i) #\-)
140                (char= (char name i) #\Space))
141        (setf (char name i) #\_)))
142    (make-class-name
143     (concatenate 'string "org.armedbear.lisp." name))))
144
145(defun make-unique-class-name ()
146  "Creates a random class name for use with a `class-file' structure's
147`class' slot."
148  (make-class-name
149   (concatenate 'string "abcl_"
150                (substitute #\_ #\-
151                            (java:jcall (java:jmethod "java.util.UUID"
152                                                      "toString")
153                                        (java:jstatic "randomUUID"
154                                                      "java.util.UUID"))))))
155
156(defun make-class-file (&key pathname lambda-name lambda-list)
157  "Creates a `class-file' structure. If `pathname' is non-NIL, it's
158used to derive a class name. If it is NIL, a random one created
159using `make-unique-class-name'."
160  (let* ((class-name (if pathname
161                         (class-name-from-filespec  pathname)
162                         (make-unique-class-name)))
163         (class-file (%make-abcl-class-file :pathname pathname
164                                            :class class-name
165                                            :lambda-name lambda-name
166                                            :lambda-list lambda-list)))
167    class-file))
168
169(defmacro with-class-file (class-file &body body)
170  (let ((var (gensym)))
171    `(let* ((,var                   ,class-file)
172            (*class-file*           ,var)
173            (*pool*                 (abcl-class-file-constants ,var))
174            (*static-code*          (abcl-class-file-static-code ,var))
175            (*externalized-objects* (abcl-class-file-objects ,var))
176            (*declared-functions*   (abcl-class-file-functions ,var)))
177       (progn ,@body)
178       (setf (abcl-class-file-static-code ,var)  *static-code*
179             (abcl-class-file-objects ,var)      *externalized-objects*
180             (abcl-class-file-functions ,var)    *declared-functions*))))
181
182(defstruct compiland
183  name
184  lambda-expression
185  arg-vars          ; variables for lambda arguments
186  free-specials     ;
187  arity             ; number of args, or NIL if the number of args can vary.
188  p1-result         ; the parse tree as created in pass 1
189  parent            ; the parent for compilands which defined within another
190  (children 0       ; Number of local functions
191            :type fixnum) ; defined with FLET, LABELS or LAMBDA
192  blocks            ; TAGBODY, PROGV, BLOCK, etc. blocks
193  argument-register
194  closure-register
195  environment-register
196  class-file ; class-file object
197  (%single-valued-p t))
198
199(defknown compiland-single-valued-p (t) t)
200(defun compiland-single-valued-p (compiland)
201  (unless (compiland-parent compiland)
202    (let ((name (compiland-name compiland)))
203      (when name
204        (let ((result-type
205               (or (function-result-type name)
206                   (and (proclaimed-ftype name)
207                        (ftype-result-type (proclaimed-ftype name))))))
208          (when result-type
209            (return-from compiland-single-valued-p
210                         (cond ((eq result-type '*)
211                                nil)
212                               ((atom result-type)
213                                t)
214                               ((eq (%car result-type) 'VALUES)
215                                (= (length result-type) 2))
216                               (t
217                                t))))))))
218  ;; Otherwise...
219  (compiland-%single-valued-p compiland))
220
221(defvar *current-compiland* nil)
222
223(defvar *this-class* nil)
224
225;; All tags visible at the current point of compilation, some of which may not
226;; be in the current compiland.
227(defvar *visible-tags* ())
228
229;; The next available register.
230(defvar *register* 0)
231
232;; Total number of registers allocated.
233(defvar *registers-allocated* 0)
234
235(defvar *handlers* ())
236
237(defstruct handler
238  from       ;; label indicating the start of the protected block
239  to         ;; label indicating the end of the protected block
240  code       ;; label to jump to if the specified exception occurs
241  catch-type ;; pool index of the class name of the exception, or 0 (zero)
242             ;; for 'all'
243  )
244
245;; Variables visible at the current point of compilation.
246(defvar *visible-variables* nil
247  "All variables visible to the form currently being
248processed, including free specials.")
249
250;; All variables seen so far.
251(defvar *all-variables* nil
252  "All variables in the lexical scope (thus excluding free specials)
253of the compilands being processed (p1: so far; p2: in total).")
254
255;; Undefined variables that we've already warned about.
256(defvar *undefined-variables* nil)
257
258(defvar *dump-variables* nil)
259
260(defun dump-1-variable (variable)
261  (sys::%format t "  ~S special-p = ~S register = ~S binding-reg = ~S index = ~S declared-type = ~S~%"
262           (variable-name variable)
263           (variable-special-p variable)
264           (variable-register variable)
265           (variable-binding-register variable)
266           (variable-index variable)
267           (variable-declared-type variable)))
268
269(defun dump-variables (list caption &optional (force nil))
270  (when (or force *dump-variables*)
271    (write-string caption)
272    (if list
273        (dolist (variable list)
274          (dump-1-variable variable))
275        (sys::%format t "  None.~%"))))
276
277(defstruct (variable-info (:conc-name variable-)
278                          (:constructor make-variable)
279                          (:predicate variable-p))
280  name
281  initform
282  (declared-type :none)
283  (derived-type :none)
284  ignore-p
285  ignorable-p
286  representation
287  special-p     ; indicates whether a variable is special
288  register      ; register number for a local variable
289  binding-register ; register number containing the binding reference
290  index         ; index number for a variable in the argument array
291  closure-index ; index number for a variable in the closure context array
292  environment   ; the environment for the variable, if we're compiling in
293                ; a non-null lexical environment with variables
294    ;; a variable can be either special-p *or* have a register *or*
295    ;; have an index *or* a closure-index *or* an environment
296  (reads 0 :type fixnum)
297  (writes 0 :type fixnum)
298  references
299  (references-allowed-p t) ; NIL if this is a symbol macro in the enclosing
300                           ; lexical environment
301  used-non-locally-p
302  (compiland *current-compiland*)
303  block)
304
305(defstruct (var-ref (:constructor make-var-ref (variable)))
306  ;; The variable this reference refers to. Will be NIL if the VAR-REF has been
307  ;; rewritten to reference a constant value.
308  variable
309  ;; True if the VAR-REF has been rewritten to reference a constant value.
310  constant-p
311  ;; The constant value of this VAR-REF.
312  constant-value)
313
314;; obj can be a symbol or variable
315;; returns variable or nil
316(declaim (ftype (function (t) t) unboxed-fixnum-variable))
317(defun unboxed-fixnum-variable (obj)
318  (cond ((symbolp obj)
319         (let ((variable (find-visible-variable obj)))
320           (if (and variable
321                    (eq (variable-representation variable) :int))
322               variable
323               nil)))
324        ((variable-p obj)
325         (if (eq (variable-representation obj) :int)
326             obj
327             nil))
328        (t
329         nil)))
330
331(defvar *child-p* nil
332  "True for local functions created by FLET, LABELS and (NAMED-)LAMBDA")
333
334(defknown find-variable (symbol list) t)
335(defun find-variable (name variables)
336  (dolist (variable variables)
337    (when (eq name (variable-name variable))
338      (return variable))))
339
340(defknown find-visible-variable (t) t)
341(defun find-visible-variable (name)
342  (dolist (variable *visible-variables*)
343    (when (eq name (variable-name variable))
344      (return variable))))
345
346(defknown allocate-register () (integer 0 65535))
347(defun allocate-register ()
348  (let* ((register *register*)
349         (next-register (1+ register)))
350    (declare (type (unsigned-byte 16) register next-register))
351    (setf *register* next-register)
352    (when (< *registers-allocated* next-register)
353      (setf *registers-allocated* next-register))
354    register))
355
356(defknown allocate-register-pair () (integer 0 65535))
357(defun allocate-register-pair ()
358  (let* ((register *register*)
359         (next-register (+ register 2)))
360    (declare (type (unsigned-byte 16) register next-register))
361    (setf *register* next-register)
362    (when (< *registers-allocated* next-register)
363      (setf *registers-allocated* next-register))
364    register))
365
366(defstruct local-function
367  name
368  definition
369  compiland
370  inline-expansion
371  function    ;; the function loaded through load-compiled-function
372  class-file  ;; the class file structure for this function
373  variable    ;; the variable which contains the loaded compiled function
374              ;; or compiled closure
375  environment ;; the environment in which the function is stored in
376              ;; case of a function from an enclosing lexical environment
377              ;; which itself isn't being compiled
378  (references-allowed-p t) ;;whether a reference to the function CAN be captured
379  (references-needed-p nil) ;;whether a reference to the function NEEDS to be
380          ;;captured, because the function name is used in a
381                            ;;(function ...) form. Obviously implies
382                            ;;references-allowed-p.
383  )
384
385(defvar *local-functions* ())
386
387(defknown find-local-function (t) t)
388(defun find-local-function (name)
389  (dolist (local-function *local-functions* nil)
390    (when (equal name (local-function-name local-function))
391        (return local-function))))
392
393(defvar *using-arg-array* nil)
394(defvar *hairy-arglist-p* nil)
395
396(defstruct node
397  form
398  (compiland *current-compiland*))
399;; No need for a special constructor: nobody instantiates
400;; nodes directly
401
402;; control-transferring blocks: TAGBODY, CATCH, to do: BLOCK
403
404(defstruct (control-transferring-node (:include node))
405  ;; If non-nil, the TAGBODY contains local blocks which "contaminate" the
406  ;; environment, with GO forms in them which target tags in this TAGBODY
407  ;; Non-nil if and only if the block doesn't modify the environment
408  needs-environment-restoration
409  )
410;; No need for a special constructor: nobody instantiates
411;; control-transferring-nodes directly
412
413(defstruct (tagbody-node (:conc-name tagbody-)
414                         (:include control-transferring-node)
415       (:constructor %make-tagbody-node ()))
416  ;; True if a tag in this tagbody is the target of a non-local GO.
417  non-local-go-p
418  ;; Tags in the tagbody form; a list of tag structures
419  tags
420  ;; Contains a variable whose value uniquely identifies the
421  ;; lexical scope from this block, to be used by GO
422  id-variable)
423(defknown make-tagbody-node () t)
424(defun make-tagbody-node ()
425  (let ((block (%make-tagbody-node)))
426    (push block (compiland-blocks *current-compiland*))
427    block))
428
429(defstruct (catch-node (:conc-name catch-)
430                       (:include control-transferring-node)
431           (:constructor %make-catch-node ()))
432  ;; The catch tag-form is evaluated, meaning we
433  ;; have no predefined value to store here
434  )
435(defknown make-catch-node () t)
436(defun make-catch-node ()
437  (let ((block (%make-catch-node)))
438    (push block (compiland-blocks *current-compiland*))
439    block))
440
441(defstruct (block-node (:conc-name block-)
442                       (:include control-transferring-node)
443                       (:constructor %make-block-node (name)))
444  name  ;; Block name
445  (exit (gensym))
446  target
447  ;; True if there is a non-local RETURN from this block.
448  non-local-return-p
449  ;; Contains a variable whose value uniquely identifies the
450  ;; lexical scope from this block, to be used by RETURN-FROM
451  id-variable)
452(defknown make-block-node (t) t)
453(defun make-block-node (name)
454  (let ((block (%make-block-node name)))
455    (push block (compiland-blocks *current-compiland*))
456    block))
457
458;; binding blocks: LET, LET*, FLET, LABELS, M-V-B, PROGV, LOCALLY
459;;
460;; Binding blocks can carry references to local (optionally special) variable bindings,
461;;  contain free special bindings or both
462
463(defstruct (binding-node (:include node))
464  ;; number of the register of the saved dynamic env, or NIL if none
465  environment-register
466  ;; Not used for LOCALLY and FLET; LABELS uses vars to store its functions
467  vars
468  free-specials)
469;; nobody instantiates any binding nodes directly, so there's no reason
470;; to create a constructor with the approprate administration code
471
472(defstruct (let/let*-node (:conc-name let-)
473                          (:include binding-node)
474        (:constructor %make-let/let*-node ())))
475(defknown make-let/let*-node () t)
476(defun make-let/let*-node ()
477  (let ((block (%make-let/let*-node)))
478    (push block (compiland-blocks *current-compiland*))
479    block))
480
481(defstruct (flet-node (:conc-name flet-)
482                      (:include binding-node)
483          (:constructor %make-flet-node ())))
484(defknown make-flet-node () t)
485(defun make-flet-node ()
486  (let ((block (%make-flet-node)))
487    (push block (compiland-blocks *current-compiland*))
488    block))
489
490(defstruct (labels-node (:conc-name labels-)
491                        (:include binding-node)
492      (:constructor %make-labels-node ())))
493(defknown make-labels-node () t)
494(defun make-labels-node ()
495  (let ((block (%make-labels-node)))
496    (push block (compiland-blocks *current-compiland*))
497    block))
498
499(defstruct (m-v-b-node (:conc-name m-v-b-)
500                       (:include binding-node)
501           (:constructor %make-m-v-b-node ())))
502(defknown make-m-v-b-node () t)
503(defun make-m-v-b-node ()
504  (let ((block (%make-m-v-b-node)))
505    (push block (compiland-blocks *current-compiland*))
506    block))
507
508(defstruct (progv-node (:conc-name progv-)
509                       (:include binding-node)
510           (:constructor %make-progv-node ())))
511(defknown make-progv-node () t)
512(defun make-progv-node ()
513  (let ((block (%make-progv-node)))
514    (push block (compiland-blocks *current-compiland*))
515    block))
516
517(defstruct (locally-node (:conc-name locally-)
518                         (:include binding-node)
519       (:constructor %make-locally-node ())))
520(defknown make-locally-node () t)
521(defun make-locally-node ()
522  (let ((block (%make-locally-node)))
523    (push block (compiland-blocks *current-compiland*))
524    block))
525
526;; blocks requiring non-local exits: UNWIND-PROTECT, SYS:SYNCHRONIZED-ON
527
528(defstruct (protected-node (:include node)
529         (:constructor %make-protected-node ())))
530(defknown make-protected-node () t)
531(defun make-protected-node ()
532  (let ((block (%make-protected-node)))
533    (push block (compiland-blocks *current-compiland*))
534    block))
535
536(defstruct (unwind-protect-node (:conc-name unwind-protect-)
537                                (:include protected-node)
538        (:constructor %make-unwind-protect-node ())))
539(defknown make-unwind-protect-node () t)
540(defun make-unwind-protect-node ()
541  (let ((block (%make-unwind-protect-node)))
542    (push block (compiland-blocks *current-compiland*))
543    block))
544
545(defstruct (synchronized-node (:conc-name synchronized-)
546                              (:include protected-node)
547            (:constructor %make-synchronized-node ())))
548(defknown make-synchronized-node () t)
549(defun make-synchronized-node ()
550  (let ((block (%make-synchronized-node)))
551    (push block (compiland-blocks *current-compiland*))
552    block))
553
554
555(defvar *blocks* ())
556
557(defun find-block (name)
558  (dolist (block *blocks*)
559    (when (and (block-node-p block)
560               (eq name (block-name block)))
561      (return block))))
562
563(defknown node-constant-p (t) boolean)
564(defun node-constant-p (object)
565  (cond ((node-p object)
566         nil)
567        ((var-ref-p object)
568         nil)
569        ((constantp object)
570         t)
571        (t
572         nil)))
573
574(defknown block-requires-non-local-exit-p (t) boolean)
575(defun block-requires-non-local-exit-p (object)
576  "A block which *always* requires a 'non-local-exit' is a block which
577requires a transfer control exception to be thrown: e.g. Go and Return.
578
579Non-local exits are required by blocks which do more in their cleanup
580than just restore the lastSpecialBinding (= dynamic environment).
581"
582  (or (unwind-protect-node-p object)
583      (catch-node-p object)
584      (synchronized-node-p object)))
585
586(defknown block-creates-runtime-bindings-p (t) boolean)
587(defun block-creates-runtime-bindings-p (block)
588  ;; FIXME: This may be false, if the bindings to be
589  ;; created are a quoted list
590  (progv-node-p block))
591
592(defknown enclosed-by-runtime-bindings-creating-block-p (t) boolean)
593(defun enclosed-by-runtime-bindings-creating-block-p (outermost-block)
594  "Indicates whether the code being compiled/analyzed is enclosed in a
595block which creates special bindings at runtime."
596  (dolist (enclosing-block *blocks*)
597    (when (eq enclosing-block outermost-block)
598      (return-from enclosed-by-runtime-bindings-creating-block-p nil))
599    (when (block-creates-runtime-bindings-p enclosing-block)
600      (return-from enclosed-by-runtime-bindings-creating-block-p t))))
601
602(defknown enclosed-by-protected-block-p (&optional t) boolean)
603(defun enclosed-by-protected-block-p (&optional outermost-block)
604  "Indicates whether the code being compiled/analyzed is enclosed in
605a block which requires a non-local transfer of control exception to
606be generated.
607"
608  (dolist (enclosing-block *blocks*)
609    (when (eq enclosing-block outermost-block)
610      (return-from enclosed-by-protected-block-p nil))
611    (when (block-requires-non-local-exit-p enclosing-block)
612      (return-from enclosed-by-protected-block-p t))))
613
614(defknown enclosed-by-environment-setting-block-p (&optional t) boolean)
615(defun enclosed-by-environment-setting-block-p (&optional outermost-block)
616  (dolist (enclosing-block *blocks*)
617    (when (eq enclosing-block outermost-block)
618      (return nil))
619    (when (and (binding-node-p enclosing-block)
620               (binding-node-environment-register enclosing-block))
621      (return t))))
622
623(defknown environment-register-to-restore (&optional t) t)
624(defun environment-register-to-restore (&optional outermost-block)
625  "Returns the environment register which contains the
626saved environment from the outermost enclosing block:
627
628That's the one which contains the environment used in the outermost block."
629  (flet ((outermost-register (last-register block)
630           (when (eq block outermost-block)
631             (return-from environment-register-to-restore last-register))
632           (or (and (binding-node-p block)
633                    (binding-node-environment-register block))
634               last-register)))
635    (reduce #'outermost-register *blocks*
636            :initial-value nil)))
637
638(defstruct tag
639  ;; The symbol (or integer) naming the tag
640  name
641  ;; The symbol which is the jump target in JVM byte code
642  label
643  ;; The associated TAGBODY
644  block
645  (compiland *current-compiland*)
646  used
647  used-non-locally)
648
649(defknown find-tag (t) t)
650(defun find-tag (name)
651  (dolist (tag *visible-tags*)
652    (when (eql name (tag-name tag))
653      (return tag))))
654
655(defun process-ignore/ignorable (declaration names variables)
656  (when (memq declaration '(IGNORE IGNORABLE))
657    (let ((what (if (eq declaration 'IGNORE) "ignored" "ignorable")))
658      (dolist (name names)
659        (unless (and (consp name) (eq (car name) 'FUNCTION))
660          (let ((variable (find-variable name variables)))
661            (cond ((null variable)
662                   (compiler-style-warn "Declaring unknown variable ~S to be ~A."
663                                        name what))
664                  ((variable-special-p variable)
665                   (compiler-style-warn "Declaring special variable ~S to be ~A."
666                                        name what))
667                  ((eq declaration 'IGNORE)
668                   (setf (variable-ignore-p variable) t))
669                  (t
670                   (setf (variable-ignorable-p variable) t)))))))))
671
672(defun finalize-generic-functions ()
673  (dolist (sym '(make-instance
674                 initialize-instance
675                 shared-initialize))
676    (let ((gf (and (fboundp sym) (fdefinition sym))))
677      (when (typep gf 'generic-function)
678        (unless (compiled-function-p gf)
679          (mop::finalize-generic-function gf))))))
680
681(finalize-generic-functions)
682
683(provide 'jvm)
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