1 ;;;; the top-level interfaces to the compiler
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; This software is derived from the CMU CL system, which was
7 ;;;; written at Carnegie Mellon University and released into the
8 ;;;; public domain. The software is in the public domain and is
9 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
10 ;;;; files for more information.
14 ;;; FIXME: Doesn't this belong somewhere else, like early-c.lisp?
15 (declaim (special *constants* *free-variables* *component-being-compiled*
16 *code-vector* *next-location* *result-fixups*
17 *free-functions* *source-paths*
18 *seen-blocks* *seen-functions* *list-conflicts-table*
19 *continuation-number* *continuation-numbers*
20 *number-continuations* *tn-id* *tn-ids* *id-tns*
21 *label-ids* *label-id* *id-labels*
22 *undefined-warnings* *compiler-error-count*
23 *compiler-warning-count* *compiler-style-warning-count*
25 *compiler-error-bailout*
26 #!+sb-show *compiler-trace-output*
27 *last-source-context* *last-original-source*
28 *last-source-form* *last-format-string* *last-format-args*
29 *last-message-count* *lexenv*))
31 (defvar *byte-compile-default* :maybe
33 "the default value for the :BYTE-COMPILE argument to COMPILE-FILE")
35 (defvar *byte-compile-top-level*
37 #+sb-xc-host nil ; since the byte compiler isn't supported in cross-compiler
39 "Similar to *BYTE-COMPILE-DEFAULT*, but controls the compilation of top-level
40 forms (evaluated at load-time) when the :BYTE-COMPILE argument is :MAYBE
41 (the default.) When true, we decide to byte-compile.")
43 ;;; default value of the :BYTE-COMPILE argument to the compiler
44 (defvar *byte-compile* :maybe)
46 ;;; Bound by COMPILE-COMPONENT to T when byte-compiling, and NIL when
47 ;;; native compiling. During IR1 conversion this can also be :MAYBE,
48 ;;; in which case we must look at the policy, see (byte-compiling).
49 (defvar *byte-compiling* :maybe)
50 (declaim (type (member t nil :maybe) *byte-compile* *byte-compiling*
51 *byte-compile-default*))
53 (defvar *check-consistency* nil)
54 (defvar *all-components*)
56 ;;; Bind this to a stream to capture various internal debugging output.
58 (defvar *compiler-trace-output* nil)
60 ;;; The current block compilation state. These are initialized to the
61 ;;; :BLOCK-COMPILE and :ENTRY-POINTS arguments that COMPILE-FILE was
64 ;;; *BLOCK-COMPILE-ARGUMENT* holds the original value of the
65 ;;; :BLOCK-COMPILE argument, which overrides any internal
67 (defvar *block-compile*)
68 (defvar *block-compile-argument*)
69 (declaim (type (member nil t :specified)
70 *block-compile* *block-compile-argument*))
71 (defvar *entry-points*)
72 (declaim (list *entry-points*))
74 ;;; When block compiling, used by PROCESS-FORM to accumulate top-level
75 ;;; lambdas resulting from compiling subforms. (In reverse order.)
76 (defvar *top-level-lambdas*)
77 (declaim (list *top-level-lambdas*))
79 (defvar sb!xc:*compile-verbose* t
81 "The default for the :VERBOSE argument to COMPILE-FILE.")
82 (defvar sb!xc:*compile-print* t
84 "The default for the :PRINT argument to COMPILE-FILE.")
85 (defvar *compile-progress* nil
87 "When this is true, the compiler prints to *ERROR-OUTPUT* progress
88 information about the phases of compilation of each function. (This
89 is useful mainly in large block compilations.)")
91 (defvar sb!xc:*compile-file-pathname* nil
93 "The defaulted pathname of the file currently being compiled, or NIL if not
95 (defvar sb!xc:*compile-file-truename* nil
97 "The TRUENAME of the file currently being compiled, or NIL if not
100 (declaim (type (or pathname null)
101 sb!xc:*compile-file-pathname*
102 sb!xc:*compile-file-truename*))
104 ;;; the values of *PACKAGE* and policy when compilation started
105 (defvar *initial-package*)
106 (defvar *initial-cookie*)
107 (defvar *initial-interface-cookie*)
109 ;;; The source-info structure for the current compilation. This is null
110 ;;; globally to indicate that we aren't currently in any identifiable
112 (defvar *source-info* nil)
114 ;;; True if we are within a WITH-COMPILATION-UNIT form (which normally
115 ;;; causes nested uses to be no-ops).
116 (defvar *in-compilation-unit* nil)
118 ;;; Count of the number of compilation units dynamically enclosed by
119 ;;; the current active WITH-COMPILATION-UNIT that were unwound out of.
120 (defvar *aborted-compilation-unit-count*)
122 ;;; Mumble conditional on *COMPILE-PROGRESS*.
123 (defun maybe-mumble (&rest foo)
124 (when *compile-progress*
125 (compiler-mumble "~&")
126 (pprint-logical-block (*error-output* nil :per-line-prefix "; ")
127 (apply #'compiler-mumble foo))))
129 (deftype object () '(or fasl-file core-object null))
131 (defvar *compile-object* nil)
132 (declaim (type object *compile-object*))
134 ;;;; WITH-COMPILATION-UNIT and WITH-COMPILATION-VALUES
136 (defmacro sb!xc:with-compilation-unit (options &body body)
138 "WITH-COMPILATION-UNIT ({Key Value}*) Form*
139 This form affects compilations that take place within its dynamic extent. It
140 is intended to be wrapped around the compilation of all files in the same
141 system. These keywords are defined:
142 :OVERRIDE Boolean-Form
143 One of the effects of this form is to delay undefined warnings
144 until the end of the form, instead of giving them at the end of each
145 compilation. If OVERRIDE is NIL (the default), then the outermost
146 WITH-COMPILATION-UNIT form grabs the undefined warnings. Specifying
147 OVERRIDE true causes that form to grab any enclosed warnings, even if
148 it is enclosed by another WITH-COMPILATION-UNIT."
149 `(%with-compilation-unit (lambda () ,@body) ,@options))
151 (defun %with-compilation-unit (fn &key override)
152 (let ((succeeded-p nil))
153 (if (and *in-compilation-unit* (not override))
154 ;; Inside another WITH-COMPILATION-UNIT, a WITH-COMPILATION-UNIT is
155 ;; ordinarily (unless OVERRIDE) basically a no-op.
157 (multiple-value-prog1 (funcall fn) (setf succeeded-p t))
159 (incf *aborted-compilation-unit-count*)))
160 ;; FIXME: Now *COMPILER-FOO-COUNT* stuff is bound in more than
161 ;; one place. If we can get rid of the IR1 interpreter, this
162 ;; should be easier to clean up.
163 (let ((*aborted-compilation-unit-count* 0)
164 (*compiler-error-count* 0)
165 (*compiler-warning-count* 0)
166 (*compiler-style-warning-count* 0)
167 (*compiler-note-count* 0)
168 (*undefined-warnings* nil)
169 (*in-compilation-unit* t))
170 (handler-bind ((parse-unknown-type
172 (note-undefined-reference
173 (parse-unknown-type-specifier c)
176 (multiple-value-prog1 (funcall fn) (setf succeeded-p t))
178 (incf *aborted-compilation-unit-count*))
179 (summarize-compilation-unit (not succeeded-p))))))))
181 ;;; This is to be called at the end of a compilation unit. It signals
182 ;;; any residual warnings about unknown stuff, then prints the total
183 ;;; error counts. ABORT-P should be true when the compilation unit was
184 ;;; aborted by throwing out. ABORT-COUNT is the number of dynamically
185 ;;; enclosed nested compilation units that were aborted.
186 (defun summarize-compilation-unit (abort-p)
188 (handler-bind ((style-warning #'compiler-style-warning-handler)
189 (warning #'compiler-warning-handler))
191 (let ((undefs (sort *undefined-warnings* #'string<
193 (let ((x (undefined-warning-name x)))
196 (prin1-to-string x)))))))
197 (unless *converting-for-interpreter*
198 (dolist (undef undefs)
199 (let ((name (undefined-warning-name undef))
200 (kind (undefined-warning-kind undef))
201 (warnings (undefined-warning-warnings undef))
202 (undefined-warning-count (undefined-warning-count undef)))
203 (dolist (*compiler-error-context* warnings)
204 (compiler-style-warning "undefined ~(~A~): ~S" kind name))
206 (let ((warn-count (length warnings)))
207 (when (and warnings (> undefined-warning-count warn-count))
208 (let ((more (- undefined-warning-count warn-count)))
209 (compiler-style-warning
210 "~D more use~:P of undefined ~(~A~) ~S"
211 more kind name)))))))
213 (dolist (kind '(:variable :function :type))
214 (let ((summary (mapcar #'undefined-warning-name
215 (remove kind undefs :test-not #'eq
216 :key #'undefined-warning-kind))))
218 (compiler-style-warning
219 "~:[This ~(~A~) is~;These ~(~A~)s are~] undefined:~
220 ~% ~{~<~% ~1:;~S~>~^ ~}"
221 (cdr summary) kind summary)))))))
223 (unless (or *converting-for-interpreter*
225 (zerop *aborted-compilation-unit-count*)
226 (zerop *compiler-error-count*)
227 (zerop *compiler-warning-count*)
228 (zerop *compiler-style-warning-count*)
229 (zerop *compiler-note-count*)))
230 (format *error-output* "~&")
231 (pprint-logical-block (*error-output* nil :per-line-prefix "; ")
232 (compiler-mumble "compilation unit ~:[finished~;aborted~]~
233 ~[~:;~:*~& caught ~D fatal ERROR condition~:P~]~
234 ~[~:;~:*~& caught ~D ERROR condition~:P~]~
235 ~[~:;~:*~& caught ~D WARNING condition~:P~]~
236 ~[~:;~:*~& caught ~D STYLE-WARNING condition~:P~]~
237 ~[~:;~:*~& printed ~D note~:P~]"
239 *aborted-compilation-unit-count*
240 *compiler-error-count*
241 *compiler-warning-count*
242 *compiler-style-warning-count*
243 *compiler-note-count*)))
244 (format *error-output* "~&"))
246 ;;; Evaluate BODY, then return (VALUES BODY-VALUE WARNINGS-P
247 ;;; FAILURE-P), where BODY-VALUE is the first value of the body, and
248 ;;; WARNINGS-P and FAILURE-P are as in CL:COMPILE or CL:COMPILE-FILE.
249 ;;; This also wraps up WITH-IR1-NAMESPACE functionality.
250 (defmacro with-compilation-values (&body body)
252 (let ((*warnings-p* nil)
254 (values (progn ,@body)
258 ;;;; component compilation
260 (defparameter *max-optimize-iterations* 3 ; ARB
262 "The upper limit on the number of times that we will consecutively do IR1
263 optimization that doesn't introduce any new code. A finite limit is
264 necessary, since type inference may take arbitrarily long to converge.")
266 (defevent ir1-optimize-until-done "IR1-OPTIMIZE-UNTIL-DONE called")
267 (defevent ir1-optimize-maxed-out "hit *MAX-OPTIMIZE-ITERATIONS* limit")
269 ;;; Repeatedly optimize COMPONENT until no further optimizations can
270 ;;; be found or we hit our iteration limit. When we hit the limit, we
271 ;;; clear the component and block REOPTIMIZE flags to discourage the
272 ;;; next optimization attempt from pounding on the same code.
273 (defun ir1-optimize-until-done (component)
274 (declare (type component component))
276 (event ir1-optimize-until-done)
278 (cleared-reanalyze nil))
280 (when (component-reanalyze component)
282 (setq cleared-reanalyze t)
283 (setf (component-reanalyze component) nil))
284 (setf (component-reoptimize component) nil)
285 (ir1-optimize component)
286 (unless (component-reoptimize component)
290 (when (= count *max-optimize-iterations*)
291 (event ir1-optimize-maxed-out)
293 (setf (component-reoptimize component) nil)
294 (do-blocks (block component)
295 (setf (block-reoptimize block) nil))
298 (when cleared-reanalyze
299 (setf (component-reanalyze component) t)))
302 (defparameter *constraint-propagate* t)
303 (defparameter *reoptimize-after-type-check-max* 5)
305 (defevent reoptimize-maxed-out
306 "*REOPTIMIZE-AFTER-TYPE-CHECK-MAX* exceeded.")
308 ;;; Iterate doing FIND-DFO until no new dead code is discovered.
309 (defun dfo-as-needed (component)
310 (declare (type component component))
311 (when (component-reanalyze component)
315 (unless (component-reanalyze component)
321 ;;; Do all the IR1 phases for a non-top-level component.
322 (defun ir1-phases (component)
323 (declare (type component component))
324 (let ((*constraint-number* 0)
326 (declare (special *constraint-number*))
328 (ir1-optimize-until-done component)
329 (when (or (component-new-functions component)
330 (component-reanalyze-functions component))
331 (maybe-mumble "locall ")
332 (local-call-analyze component))
333 (dfo-as-needed component)
334 (when *constraint-propagate*
335 (maybe-mumble "constraint ")
336 (constraint-propagate component))
337 (maybe-mumble "type ")
338 ;; Delay the generation of type checks until the type
339 ;; constraints have had time to propagate, else the compiler can
341 (unless (and (or (component-reoptimize component)
342 (component-reanalyze component)
343 (component-new-functions component)
344 (component-reanalyze-functions component))
345 (< loop-count (- *reoptimize-after-type-check-max* 2)))
346 (generate-type-checks component)
347 (unless (or (component-reoptimize component)
348 (component-reanalyze component)
349 (component-new-functions component)
350 (component-reanalyze-functions component))
352 (when (>= loop-count *reoptimize-after-type-check-max*)
353 (maybe-mumble "[reoptimize limit]")
354 (event reoptimize-maxed-out)
358 (ir1-finalize component)
361 (defun native-compile-component (component)
362 (let ((*code-segment* nil)
364 (maybe-mumble "GTN ")
365 (gtn-analyze component)
366 (maybe-mumble "LTN ")
367 (ltn-analyze component)
368 (dfo-as-needed component)
369 (maybe-mumble "control ")
370 (control-analyze component #'make-ir2-block)
372 (when (ir2-component-values-receivers (component-info component))
373 (maybe-mumble "stack ")
374 (stack-analyze component)
375 ;; Assign BLOCK-NUMBER for any cleanup blocks introduced by
376 ;; stack analysis. There shouldn't be any unreachable code after
377 ;; control, so this won't delete anything.
378 (dfo-as-needed component))
382 (maybe-mumble "IR2tran ")
384 (entry-analyze component)
385 (ir2-convert component)
387 (when (policy nil (>= speed cspeed))
388 (maybe-mumble "copy ")
389 (copy-propagate component))
391 (select-representations component)
393 (when *check-consistency*
394 (maybe-mumble "check2 ")
395 (check-ir2-consistency component))
397 (delete-unreferenced-tns component)
399 (maybe-mumble "life ")
400 (lifetime-analyze component)
402 (when *compile-progress*
403 (compiler-mumble "") ; Sync before doing more output.
404 (pre-pack-tn-stats component *error-output*))
406 (when *check-consistency*
407 (maybe-mumble "check-life ")
408 (check-life-consistency component))
410 (maybe-mumble "pack ")
413 (when *check-consistency*
414 (maybe-mumble "check-pack ")
415 (check-pack-consistency component))
418 (when *compiler-trace-output*
419 (describe-component component *compiler-trace-output*)
420 (describe-ir2-component component *compiler-trace-output*))
422 (maybe-mumble "code ")
423 (multiple-value-bind (code-length trace-table fixups)
424 (generate-code component)
427 (when *compiler-trace-output*
428 (format *compiler-trace-output*
429 "~|~%disassembly of code for ~S~2%" component)
430 (sb!disassem:disassemble-assem-segment *code-segment*
431 *compiler-trace-output*))
433 (etypecase *compile-object*
435 (maybe-mumble "fasl")
436 (fasl-dump-component component
443 (maybe-mumble "core")
444 (make-core-component component
452 ;; We are done, so don't bother keeping anything around.
453 (setf (component-info component) nil)
457 ;;; Return our best guess for whether we will byte compile code
458 ;;; currently being IR1 converted. This is only a guess because the
459 ;;; decision is made on a per-component basis.
461 ;;; FIXME: This should be called something more mnemonic, e.g.
462 ;;; PROBABLY-BYTE-COMPILING
463 (defun byte-compiling ()
464 (if (eq *byte-compiling* :maybe)
465 (or (eq *byte-compile* t)
466 (policy nil (zerop speed) (<= debug 1)))
467 (and *byte-compile* *byte-compiling*)))
469 ;;; Delete components with no external entry points before we try to
470 ;;; generate code. Unreachable closures can cause IR2 conversion to
471 ;;; puke on itself, since it is the reference to the closure which
472 ;;; normally causes the components to be combined. This doesn't really
473 ;;; cover all cases...
474 (defun delete-if-no-entries (component)
475 (dolist (fun (component-lambdas component)
476 (delete-component component))
477 (case (functional-kind fun)
478 (:top-level (return))
480 (unless (every #'(lambda (ref)
481 (eq (block-component (node-block ref))
486 (defun compile-component (component)
487 (let* ((*component-being-compiled* component)
489 (ecase *byte-compile*
493 (dolist (fun (component-lambdas component) t)
494 (unless (policy (lambda-bind fun)
495 (zerop speed) (<= debug 1))
498 (when sb!xc:*compile-print*
499 (compiler-mumble "~&; ~:[~;byte ~]compiling ~A: "
501 (component-name component)))
503 (ir1-phases component)
505 ;; FIXME: What is MAYBE-MUMBLE for? Do we need it any more?
506 (maybe-mumble "env ")
507 (environment-analyze component)
508 (dfo-as-needed component)
510 (delete-if-no-entries component)
512 (unless (eq (block-next (component-head component))
513 (component-tail component))
515 (byte-compile-component component)
516 (native-compile-component component))))
518 (clear-constant-info)
520 (when sb!xc:*compile-print*
521 (compiler-mumble "~&"))
525 ;;;; clearing global data structures
527 ;;;; FIXME: Is it possible to get rid of this stuff, getting rid of
528 ;;;; global data structures entirely when possible and consing up the
529 ;;;; others from scratch instead of clearing and reusing them?
531 ;;; Clear the INFO in constants in the *FREE-VARIABLES*, etc. In
532 ;;; addition to allowing stuff to be reclaimed, this is required for
533 ;;; correct assignment of constant offsets, since we need to assign a
534 ;;; new offset for each component. We don't clear the FUNCTIONAL-INFO
535 ;;; slots, since they are used to keep track of functions across
536 ;;; component boundaries.
537 (defun clear-constant-info ()
538 (maphash #'(lambda (k v)
540 (setf (leaf-info v) nil))
542 (maphash #'(lambda (k v)
545 (setf (leaf-info v) nil)))
549 ;;; Blow away the REFS for all global variables, and let COMPONENT
551 (defun clear-ir1-info (component)
552 (declare (type component component))
554 (maphash #'(lambda (k v)
558 (delete-if #'here-p (leaf-refs v)))
559 (when (basic-var-p v)
560 (setf (basic-var-sets v)
561 (delete-if #'here-p (basic-var-sets v))))))
564 (eq (block-component (node-block x)) component)))
565 (blast *free-variables*)
566 (blast *free-functions*)
570 ;;; Clear global variables used by the compiler.
572 ;;; FIXME: It seems kinda nasty and unmaintainable to have to do this,
573 ;;; and it adds overhead even when people aren't using the compiler.
574 ;;; Perhaps we could make these global vars unbound except when
575 ;;; actually in use, so that this function could go away.
576 (defun clear-stuff (&optional (debug-too t))
578 ;; Clear global tables.
579 (when (boundp '*free-functions*)
580 (clrhash *free-functions*)
581 (clrhash *free-variables*)
582 (clrhash *constants*))
584 ;; Clear debug counters and tables.
585 (clrhash *seen-blocks*)
586 (clrhash *seen-functions*)
587 (clrhash *list-conflicts-table*)
590 (clrhash *continuation-numbers*)
591 (clrhash *number-continuations*)
592 (setq *continuation-number* 0)
596 (clrhash *label-ids*)
597 (clrhash *id-labels*)
600 ;; Clear some Pack data structures (for GC purposes only).
601 (assert (not *in-pack*))
602 (dolist (sb *backend-sb-list*)
603 (when (finite-sb-p sb)
604 (fill (finite-sb-live-tns sb) nil))))
606 ;; (Note: The CMU CL code used to set CL::*GENSYM-COUNTER* to zero here.
607 ;; Superficially, this seemed harmful -- the user could reasonably be
608 ;; surprised if *GENSYM-COUNTER* turned back to zero when something was
609 ;; compiled. A closer inspection showed that this actually turned out to be
610 ;; harmless in practice, because CLEAR-STUFF was only called from within
611 ;; forms which bound CL::*GENSYM-COUNTER* to zero. However, this means that
612 ;; even though zeroing CL::*GENSYM-COUNTER* here turned out to be harmless in
613 ;; practice, it was also useless in practice. So we don't do it any more.)
619 ;;; Print out some useful info about Component to Stream.
620 (defun describe-component (component *standard-output*)
621 (declare (type component component))
622 (format t "~|~%;;;; component: ~S~2%" (component-name component))
623 (print-blocks component)
626 (defun describe-ir2-component (component *standard-output*)
627 (format t "~%~|~%;;;; IR2 component: ~S~2%" (component-name component))
628 (format t "entries:~%")
629 (dolist (entry (ir2-component-entries (component-info component)))
630 (format t "~4TL~D: ~S~:[~; [closure]~]~%"
631 (label-id (entry-info-offset entry))
632 (entry-info-name entry)
633 (entry-info-closure-p entry)))
635 (pre-pack-tn-stats component *standard-output*)
637 (print-ir2-blocks component)
643 ;;;; When reading from a file, we have to keep track of some source
644 ;;;; information. We also exploit our ability to back up for printing
645 ;;;; the error context and for recovering from errors.
647 ;;;; The interface we provide to this stuff is the stream-oid
648 ;;;; Source-Info structure. The bookkeeping is done as a side-effect
649 ;;;; of getting the next source form.
651 ;;; The File-Info structure holds all the source information for a
654 ;; If a file, the truename of the corresponding source file. If from a Lisp
655 ;; form, :LISP, if from a stream, :STREAM.
656 (name (required-argument) :type (or pathname (member :lisp :stream)))
657 ;; The defaulted, but not necessarily absolute file name (i.e. prior to
658 ;; TRUENAME call.) Null if not a file. This is used to set
659 ;; *COMPILE-FILE-PATHNAME*, and if absolute, is dumped in the debug-info.
660 (untruename nil :type (or pathname null))
661 ;; The file's write date (if relevant.)
662 (write-date nil :type (or unsigned-byte null))
663 ;; The source path root number of the first form in this file (i.e. the
664 ;; total number of forms converted previously in this compilation.)
665 (source-root 0 :type unsigned-byte)
666 ;; Parallel vectors containing the forms read out of the file and the file
667 ;; positions that reading of each form started at (i.e. the end of the
669 (forms (make-array 10 :fill-pointer 0 :adjustable t) :type (vector t))
670 (positions (make-array 10 :fill-pointer 0 :adjustable t) :type (vector t)))
672 ;;; The SOURCE-INFO structure provides a handle on all the source
673 ;;; information for an entire compilation.
674 (defstruct (source-info
675 #-no-ansi-print-object
676 (:print-object (lambda (s stream)
677 (print-unreadable-object (s stream :type t)))))
678 ;; the UT that compilation started at
679 (start-time (get-universal-time) :type unsigned-byte)
680 ;; a list of the FILE-INFO structures for this compilation
681 (files nil :type list)
682 ;; the tail of the FILES for the file we are currently reading
683 (current-file nil :type list)
684 ;; the stream that we are using to read the CURRENT-FILE, or NIL if
685 ;; no stream has been opened yet
686 (stream nil :type (or stream null)))
688 ;;; Given a list of pathnames, return a SOURCE-INFO structure.
689 (defun make-file-source-info (files)
690 (declare (list files))
693 (make-file-info :name (truename x)
695 :write-date (file-write-date x)))
698 (make-source-info :files file-info
699 :current-file file-info)))
701 ;;; Return a SOURCE-INFO to describe the incremental compilation of
702 ;;; FORM. Also used by SB!EVAL:INTERNAL-EVAL.
703 (defun make-lisp-source-info (form)
705 :start-time (get-universal-time)
706 :files (list (make-file-info :name :lisp
710 ;;; Return a SOURCE-INFO which will read from Stream.
711 (defun make-stream-source-info (stream)
712 (let ((files (list (make-file-info :name :stream))))
718 ;;; Print an error message for a non-EOF error on STREAM. OLD-POS is a
719 ;;; preceding file position that hopefully comes before the beginning
720 ;;; of the line. Of course, this only works on streams that support
721 ;;; the file-position operation.
722 (defun normal-read-error (stream old-pos condition)
723 (declare (type stream stream) (type unsigned-byte old-pos))
724 (let ((pos (file-position stream)))
725 (file-position stream old-pos)
726 (let ((start old-pos))
728 (let ((line (read-line stream nil))
729 (end (file-position stream)))
731 ;; FIXME: READER-ERROR also prints the file position. Do we really
732 ;; need to try to give position information here?
733 (compiler-abort "read error at ~D:~% \"~A/\\~A\"~%~A"
735 (string-left-trim " "
736 (subseq line 0 (- pos start)))
737 (subseq line (- pos start))
743 ;;; Back STREAM up to the position Pos, then read a form with
744 ;;; *READ-SUPPRESS* on, discarding the result. If an error happens
745 ;;; during this read, then bail out using COMPILER-ERROR (fatal in
747 (defun ignore-error-form (stream pos)
748 (declare (type stream stream) (type unsigned-byte pos))
749 (file-position stream pos)
750 (handler-case (let ((*read-suppress* t))
753 (declare (ignore condition))
754 (compiler-error "unable to recover from read error"))))
756 ;;; Print an error message giving some context for an EOF error. We
757 ;;; print the first line after POS that contains #\" or #\(, or
758 ;;; lacking that, the first non-empty line.
759 (defun unexpected-eof-error (stream pos condition)
760 (declare (type stream stream) (type unsigned-byte pos))
762 (file-position stream pos)
764 (let ((line (read-line stream nil nil)))
765 (unless line (return))
766 (when (or (find #\" line) (find #\( line))
769 (unless (or res (zerop (length line)))
771 (compiler-abort "read error in form starting at ~D:~%~@[ \"~A\"~%~]~A"
775 (file-position stream (file-length stream))
778 ;;; Read a form from STREAM, returning EOF at EOF. If a read error
779 ;;; happens, then attempt to recover if possible, returning a proxy
782 ;;; FIXME: This seems like quite a lot of complexity, and it seems
783 ;;; impossible to get it quite right. (E.g. the `(CERROR ..) form
784 ;;; returned here won't do the right thing if it's not in a position
785 ;;; for an executable form.) I think it might be better to just stop
786 ;;; trying to recover from read errors, punting all this noise
787 ;;; (including UNEXPECTED-EOF-ERROR and IGNORE-ERROR-FORM) and doing a
788 ;;; COMPILER-ABORT instead.
789 (defun careful-read (stream eof pos)
790 (handler-case (read stream nil eof)
792 (let ((new-pos (file-position stream)))
793 (cond ((= new-pos (file-length stream))
794 (unexpected-eof-error stream pos condition))
796 (normal-read-error stream pos condition)
797 (ignore-error-form stream pos))))
798 '(cerror "Skip this form."
799 "compile-time read error"))))
801 ;;; If Stream is present, return it, otherwise open a stream to the
802 ;;; current file. There must be a current file. When we open a new
803 ;;; file, we also reset *PACKAGE* and policy. This gives the effect of
804 ;;; rebinding around each file.
806 ;;; FIXME: Since we now do the standard ANSI thing of only one file
807 ;;; per compile (unlike the CMU CL extended COMPILE-FILE) can't this
808 ;;; complexity (including ADVANCE-SOURCE-FILE) go away?
809 (defun get-source-stream (info)
810 (declare (type source-info info))
811 (cond ((source-info-stream info))
813 (setq *package* *initial-package*)
814 (setq *default-cookie* (copy-cookie *initial-cookie*))
815 (setq *default-interface-cookie*
816 (copy-cookie *initial-interface-cookie*))
817 (let* ((finfo (first (source-info-current-file info)))
818 (name (file-info-name finfo)))
819 (setq sb!xc:*compile-file-truename* name)
820 (setq sb!xc:*compile-file-pathname* (file-info-untruename finfo))
821 (setf (source-info-stream info)
822 (open name :direction :input))))))
824 ;;; Close the stream in INFO if it is open.
825 (defun close-source-info (info)
826 (declare (type source-info info))
827 (let ((stream (source-info-stream info)))
828 (when stream (close stream)))
829 (setf (source-info-stream info) nil)
832 ;;; Advance INFO to the next source file. If there is no next source
833 ;;; file, return NIL, otherwise T.
834 (defun advance-source-file (info)
835 (declare (type source-info info))
836 (close-source-info info)
837 (let ((prev (pop (source-info-current-file info))))
838 (if (source-info-current-file info)
839 (let ((current (first (source-info-current-file info))))
840 (setf (file-info-source-root current)
841 (+ (file-info-source-root prev)
842 (length (file-info-forms prev))))
846 ;;; Read the sources from the source files and process them.
847 (defun process-sources (info)
848 (let* ((file (first (source-info-current-file info)))
849 (stream (get-source-stream info)))
851 (let* ((pos (file-position stream))
853 (form (careful-read stream eof pos)))
856 (let* ((forms (file-info-forms file))
857 (current-idx (+ (fill-pointer forms)
858 (file-info-source-root file))))
859 (vector-push-extend form forms)
860 (vector-push-extend pos (file-info-positions file))
861 (clrhash *source-paths*)
862 (find-source-paths form current-idx)
863 (process-top-level-form form
864 `(original-source-start 0 ,current-idx))))))
865 (when (advance-source-file info)
866 (process-sources info))))
868 ;;; Return the FILE-INFO describing the INDEX'th form.
869 (defun find-file-info (index info)
870 (declare (type index index) (type source-info info))
871 (dolist (file (source-info-files info))
872 (when (> (+ (length (file-info-forms file))
873 (file-info-source-root file))
877 ;;; Return the INDEX'th source form read from INFO and the position
878 ;;; where it was read.
879 (defun find-source-root (index info)
880 (declare (type source-info info) (type index index))
881 (let* ((file (find-file-info index info))
882 (idx (- index (file-info-source-root file))))
883 (values (aref (file-info-forms file) idx)
884 (aref (file-info-positions file) idx))))
886 ;;;; top-level form processing
888 ;;; This is called by top-level form processing when we are ready to
889 ;;; actually compile something. If *BLOCK-COMPILE* is T, then we still
890 ;;; convert the form, but delay compilation, pushing the result on
891 ;;; *TOP-LEVEL-LAMBDAS* instead.
892 (defun convert-and-maybe-compile (form path)
893 (declare (list path))
894 (let* ((*lexenv* (make-lexenv :cookie *default-cookie*
895 :interface-cookie *default-interface-cookie*))
896 (tll (ir1-top-level form path nil)))
897 (cond ((eq *block-compile* t) (push tll *top-level-lambdas*))
898 (t (compile-top-level (list tll) nil)))))
900 ;;; Process a PROGN-like portion of a top-level form. Forms is a list of
901 ;;; the forms, and Path is source path of the form they came out of.
902 (defun process-top-level-progn (forms path)
903 (declare (list forms) (list path))
905 (process-top-level-form form path)))
907 ;;; Macroexpand form in the current environment with an error handler.
908 ;;; We only expand one level, so that we retain all the intervening
909 ;;; forms in the source path.
910 (defun preprocessor-macroexpand (form)
911 (handler-case (sb!xc:macroexpand-1 form *lexenv*)
913 (compiler-error "(during macroexpansion)~%~A" condition))))
915 ;;; Process a top-level use of LOCALLY. We parse declarations and then
916 ;;; recursively process the body.
918 ;;; Binding *DEFAULT-xxx-COOKIE* is pretty much of a hack, since it
919 ;;; causes LOCALLY to "capture" enclosed proclamations. It is
920 ;;; necessary because CONVERT-AND-MAYBE-COMPILE uses the value of
921 ;;; *DEFAULT-COOKIE* as the policy. The need for this hack is due to
922 ;;; the quirk that there is no way to represent in a cookie that an
923 ;;; optimize quality came from the default.
924 (defun process-top-level-locally (form path)
925 (declare (list path))
926 (multiple-value-bind (forms decls) (sb!sys:parse-body (cdr form) nil)
928 (process-decls decls nil nil (make-continuation)))
929 (*default-cookie* (lexenv-cookie *lexenv*))
930 (*default-interface-cookie* (lexenv-interface-cookie *lexenv*)))
931 (process-top-level-progn forms path))))
933 ;;; Force any pending top-level forms to be compiled and dumped so
934 ;;; that they will be evaluated in the correct package environment.
935 ;;; Dump the form to be evaled at (cold) load time, and if EVAL is
936 ;;; true, eval the form immediately.
937 (defun process-cold-load-form (form path eval)
938 (let ((object *compile-object*))
941 (compile-top-level-lambdas () t)
942 (fasl-dump-cold-load-form form object))
943 ((or null core-object)
944 (convert-and-maybe-compile form path)))
948 (declaim (special *compiler-error-bailout*))
950 ;;; Process a top-level FORM with the specified source PATH.
951 ;;; * If this is a magic top-level form, then do stuff.
952 ;;; * If this is a macro, then expand it.
953 ;;; * Otherwise, just compile it.
954 (defun process-top-level-form (form path)
956 (declare (list path))
958 (catch 'process-top-level-form-error-abort
959 (let* ((path (or (gethash form *source-paths*) (cons form path)))
960 (*compiler-error-bailout*
962 (convert-and-maybe-compile
963 `(error "execution of a form compiled with errors:~% ~S"
966 (throw 'process-top-level-form-error-abort nil))))
968 (convert-and-maybe-compile form path)
970 ;; FIXME: It's not clear to me why we would want this
971 ;; special case; it might have been needed for some
972 ;; variation of the old GENESIS system, but it certainly
973 ;; doesn't seem to be needed for ours. Sometime after the
974 ;; system is running I'd like to remove it tentatively and
975 ;; see whether anything breaks, and if nothing does break,
976 ;; remove it permanently. (And if we *do* want special
977 ;; treatment of all these, we probably want to treat WARN
979 ((error cerror break signal)
980 (process-cold-load-form form path nil))
981 ;; FIXME: ANSI seems to encourage things like DEFSTRUCT to
982 ;; be done with EVAL-WHEN, without this kind of one-off
984 (sb!kernel:%compiler-defstruct
985 (convert-and-maybe-compile form path)
986 (compile-top-level-lambdas () t))
988 (unless (>= (length form) 2)
989 (compiler-error "EVAL-WHEN form is too short: ~S" form))
991 (cadr form) (cddr form)
993 (process-top-level-progn forms path))))
995 (unless (>= (length form) 2)
996 (compiler-error "MACROLET form is too short: ~S" form))
1000 (process-top-level-progn (cddr form) path))))
1001 (locally (process-top-level-locally form path))
1002 (progn (process-top-level-progn (cdr form) path))
1004 (let* ((uform (uncross form))
1005 (exp (preprocessor-macroexpand uform)))
1007 (convert-and-maybe-compile uform path)
1008 (process-top-level-form exp path))))))))
1012 ;;;; load time value support
1014 ;;;; (See EMIT-MAKE-LOAD-FORM.)
1016 ;;; Returns T iff we are currently producing a fasl-file and hence
1017 ;;; constants need to be dumped carefully.
1018 (defun producing-fasl-file ()
1019 (unless *converting-for-interpreter*
1020 (fasl-file-p *compile-object*)))
1022 ;;; Compile FORM and arrange for it to be called at load-time. Return
1023 ;;; the dumper handle and our best guess at the type of the object.
1024 (defun compile-load-time-value
1026 (name (let ((*print-level* 2) (*print-length* 3))
1027 (format nil "load time value of ~S"
1028 (if (and (listp form)
1029 (eq (car form) 'make-value-cell))
1032 (let ((lambda (compile-load-time-stuff form name t)))
1034 (fasl-dump-load-time-value-lambda lambda *compile-object*)
1035 (let ((type (leaf-type lambda)))
1036 (if (function-type-p type)
1037 (single-value-type (function-type-returns type))
1040 ;;; Compile the FORMS and arrange for them to be called (for effect,
1041 ;;; not value) at load time.
1042 (defun compile-make-load-form-init-forms (forms name)
1043 (let ((lambda (compile-load-time-stuff `(progn ,@forms) name nil)))
1044 (fasl-dump-top-level-lambda-call lambda *compile-object*)))
1046 ;;; Does the actual work of COMPILE-LOAD-TIME-VALUE or
1047 ;;; COMPILE-MAKE-LOAD-FORM- INIT-FORMS.
1048 (defun compile-load-time-stuff (form name for-value)
1050 (let* ((*lexenv* (make-null-lexenv))
1051 (lambda (ir1-top-level form *current-path* for-value)))
1052 (setf (leaf-name lambda) name)
1053 (compile-top-level (list lambda) t)
1056 ;;; Called by COMPILE-TOP-LEVEL when it was pased T for
1057 ;;; LOAD-TIME-VALUE-P (which happens in COMPILE-LOAD-TIME-STUFF). We
1058 ;;; don't try to combine this component with anything else and frob
1059 ;;; the name. If not in a :TOP-LEVEL component, then don't bother
1060 ;;; compiling, because it was merged with a run-time component.
1061 (defun compile-load-time-value-lambda (lambdas)
1062 (assert (null (cdr lambdas)))
1063 (let* ((lambda (car lambdas))
1064 (component (block-component (node-block (lambda-bind lambda)))))
1065 (when (eq (component-kind component) :top-level)
1066 (setf (component-name component) (leaf-name lambda))
1067 (compile-component component)
1068 (clear-ir1-info component))))
1070 ;;; The entry point for MAKE-LOAD-FORM support. When IR1 conversion
1071 ;;; finds a constant structure, it invokes this to arrange for proper
1072 ;;; dumping. If it turns out that the constant has already been
1073 ;;; dumped, then we don't need to do anything.
1075 ;;; If the constant hasn't been dumped, then we check to see whether
1076 ;;; we are in the process of creating it. We detect this by
1077 ;;; maintaining the special *CONSTANTS-BEING-CREATED* as a list of all
1078 ;;; the constants we are in the process of creating. Actually, each
1079 ;;; entry is a list of the constant and any init forms that need to be
1080 ;;; processed on behalf of that constant.
1082 ;;; It's not necessarily an error for this to happen. If we are
1083 ;;; processing the init form for some object that showed up *after*
1084 ;;; the original reference to this constant, then we just need to
1085 ;;; defer the processing of that init form. To detect this, we
1086 ;;; maintain *CONSTANTS-CREATED-SINCE-LAST-INIT* as a list of the
1087 ;;; constants created since the last time we started processing an
1088 ;;; init form. If the constant passed to emit-make-load-form shows up
1089 ;;; in this list, then there is a circular chain through creation
1090 ;;; forms, which is an error.
1092 ;;; If there is some intervening init form, then we blow out of
1093 ;;; processing it by throwing to the tag PENDING-INIT. The value we
1094 ;;; throw is the entry from *CONSTANTS-BEING-CREATED*. This is so the
1095 ;;; offending init form can be tacked onto the init forms for the
1096 ;;; circular object.
1098 ;;; If the constant doesn't show up in *CONSTANTS-BEING-CREATED*, then
1099 ;;; we have to create it. We call MAKE-LOAD-FORM and check to see
1100 ;;; whether the creation form is the magic value
1101 ;;; :JUST-DUMP-IT-NORMALLY. If it is, then we don't do anything. The
1102 ;;; dumper will eventually get its hands on the object and use the
1103 ;;; normal structure dumping noise on it.
1105 ;;; Otherwise, we bind *CONSTANTS-BEING-CREATED* and
1106 ;;; *CONSTANTS-CREATED-SINCE- LAST-INIT* and compile the creation form
1107 ;;; much the way LOAD-TIME-VALUE does. When this finishes, we tell the
1108 ;;; dumper to use that result instead whenever it sees this constant.
1110 ;;; Now we try to compile the init form. We bind
1111 ;;; *CONSTANTS-CREATED-SINCE- LAST-INIT* to NIL and compile the init
1112 ;;; form (and any init forms that were added because of circularity
1113 ;;; detection). If this works, great. If not, we add the init forms to
1114 ;;; the init forms for the object that caused the problems and let it
1116 (defvar *constants-being-created* nil)
1117 (defvar *constants-created-since-last-init* nil)
1118 ;;; FIXME: Shouldn't these^ variables be bound in LET forms?
1119 (defun emit-make-load-form (constant)
1120 (assert (fasl-file-p *compile-object*))
1121 (unless (or (fasl-constant-already-dumped constant *compile-object*)
1122 ;; KLUDGE: This special hack is because I was too lazy
1123 ;; to rework DEF!STRUCT so that the MAKE-LOAD-FORM
1124 ;; function of LAYOUT returns nontrivial forms when
1125 ;; building the cross-compiler but :IGNORE-IT when
1126 ;; cross-compiling or running under the target Lisp. --
1128 #+sb-xc-host (typep constant 'layout))
1129 (let ((circular-ref (assoc constant *constants-being-created* :test #'eq)))
1131 (when (find constant *constants-created-since-last-init* :test #'eq)
1133 (throw 'pending-init circular-ref)))
1134 (multiple-value-bind (creation-form init-form)
1136 (sb!xc:make-load-form constant (make-null-lexenv))
1138 (compiler-error "(while making load form for ~S)~%~A"
1142 (:just-dump-it-normally
1143 (fasl-validate-structure constant *compile-object*)
1148 (compile-top-level-lambdas () t)
1149 (when (fasl-constant-already-dumped constant *compile-object*)
1150 (return-from emit-make-load-form nil))
1151 (let* ((name (let ((*print-level* 1) (*print-length* 2))
1152 (with-output-to-string (stream)
1153 (write constant :stream stream))))
1155 (list constant name init-form)
1157 (let ((*constants-being-created*
1158 (cons info *constants-being-created*))
1159 (*constants-created-since-last-init*
1160 (cons constant *constants-created-since-last-init*)))
1163 (fasl-note-handle-for-constant
1165 (compile-load-time-value
1167 (format nil "creation form for ~A" name))
1170 (compiler-error "circular references in creation form for ~S"
1173 (let* ((*constants-created-since-last-init* nil)
1175 (catch 'pending-init
1176 (loop for (name form) on (cdr info) by #'cddr
1177 collect name into names
1178 collect form into forms
1180 (compile-make-load-form-init-forms
1182 (format nil "init form~:[~;s~] for ~{~A~^, ~}"
1183 (cdr forms) names)))
1186 (setf (cdr circular-ref)
1187 (append (cdr circular-ref) (cdr info))))))))))))
1191 ;;; We build a list of top-level lambdas, and then periodically smash
1192 ;;; them together into a single component and compile it.
1193 (defvar *pending-top-level-lambdas*)
1195 ;;; The maximum number of top-level lambdas we put in a single
1196 ;;; top-level component.
1198 ;;; CMU CL 18b used this nontrivially by default (setting it to 10)
1199 ;;; but consequently suffered from the inability to execute some
1200 ;;; troublesome constructs correctly, e.g. inability to load a fasl
1201 ;;; file compiled from the source file
1202 ;;; (defpackage "FOO" (:use "CL"))
1203 ;;; (print 'foo::bar)
1204 ;;; because it would dump data-setup fops (including a FOP-PACKAGE for
1205 ;;; "FOO") for the second form before dumping the the code in the
1206 ;;; first form, or the fop to execute the code in the first form. By
1207 ;;; setting this value to 0 by default, we avoid this badness. This
1208 ;;; increases the number of toplevel form functions, and so increases
1209 ;;; the size of object files.
1211 ;;; The variable is still supported because when we are compiling the
1212 ;;; SBCL system itself, which is known not contain any troublesome
1213 ;;; constructs, we can set it to a nonzero value, which reduces the
1214 ;;; number of toplevel form objects, reducing the peak memory usage in
1215 ;;; GENESIS, which is desirable, since at least for SBCL version
1216 ;;; 0.6.7, this is the high water mark for memory usage during system
1218 (defparameter *top-level-lambda-max* 0)
1220 (defun object-call-top-level-lambda (tll)
1221 (declare (type functional tll))
1222 (let ((object *compile-object*))
1225 (fasl-dump-top-level-lambda-call tll object))
1227 (core-call-top-level-lambda tll object))
1230 ;;; Add LAMBDAS to the pending lambdas. If this leaves more than
1231 ;;; *TOP-LEVEL-LAMBDA-MAX* lambdas in the list, or if FORCE-P is true,
1232 ;;; then smash the lambdas into a single component, compile it, and
1233 ;;; call the resulting function.
1234 (defun sub-compile-top-level-lambdas (lambdas force-p)
1235 (declare (list lambdas))
1236 (setq *pending-top-level-lambdas*
1237 (append *pending-top-level-lambdas* lambdas))
1238 (let ((pending *pending-top-level-lambdas*))
1240 (or (> (length pending) *top-level-lambda-max*)
1242 (multiple-value-bind (component tll) (merge-top-level-lambdas pending)
1243 (setq *pending-top-level-lambdas* ())
1244 (let ((*byte-compile* (if (eq *byte-compile* :maybe)
1245 *byte-compile-top-level*
1247 (compile-component component))
1248 (clear-ir1-info component)
1249 (object-call-top-level-lambda tll))))
1252 ;;; Compile top-level code and call the top-level lambdas. We pick off
1253 ;;; top-level lambdas in non-top-level components here, calling
1254 ;;; SUB-c-t-l-l on each subsequence of normal top-level lambdas.
1255 (defun compile-top-level-lambdas (lambdas force-p)
1256 (declare (list lambdas))
1257 (let ((len (length lambdas)))
1258 (flet ((loser (start)
1259 (or (position-if #'(lambda (x)
1260 (not (eq (component-kind
1268 (do* ((start 0 (1+ loser))
1269 (loser (loser start) (loser start)))
1272 (sub-compile-top-level-lambdas nil t)))
1273 (sub-compile-top-level-lambdas (subseq lambdas start loser)
1274 (or force-p (/= loser len)))
1275 (unless (= loser len)
1276 (object-call-top-level-lambda (elt lambdas loser))))))
1279 ;;; Compile LAMBDAS (a list of the lambdas for top-level forms) into
1280 ;;; the object file. We loop doing local call analysis until it
1281 ;;; converges, since a single pass might miss something due to
1282 ;;; components being joined by LET conversion.
1284 ;;; LOAD-TIME-VALUE-P seems to control whether it's MAKE-LOAD-FORM and
1285 ;;; COMPILE-LOAD-TIME-VALUE stuff. -- WHN 20000201
1286 (defun compile-top-level (lambdas load-time-value-p)
1287 (declare (list lambdas))
1288 (maybe-mumble "locall ")
1290 (let ((did-something nil))
1291 (dolist (lambda lambdas)
1292 (let* ((component (block-component (node-block (lambda-bind lambda))))
1293 (*all-components* (list component)))
1294 (when (component-new-functions component)
1295 (setq did-something t)
1296 (local-call-analyze component))))
1297 (unless did-something (return))))
1299 (maybe-mumble "IDFO ")
1300 (multiple-value-bind (components top-components hairy-top)
1301 (find-initial-dfo lambdas)
1302 (let ((*all-components* (append components top-components))
1303 (top-level-closure nil))
1304 (when *check-consistency*
1305 (maybe-mumble "[check]~%")
1306 (check-ir1-consistency *all-components*))
1308 (dolist (component (append hairy-top top-components))
1309 (when (pre-environment-analyze-top-level component)
1310 (setq top-level-closure t)))
1312 (let ((*byte-compile*
1313 (if (and top-level-closure (eq *byte-compile* :maybe))
1316 (dolist (component components)
1317 (compile-component component)
1318 (when (replace-top-level-xeps component)
1319 (setq top-level-closure t)))
1321 (when *check-consistency*
1322 (maybe-mumble "[check]~%")
1323 (check-ir1-consistency *all-components*))
1325 (if load-time-value-p
1326 (compile-load-time-value-lambda lambdas)
1327 (compile-top-level-lambdas lambdas top-level-closure)))
1329 (dolist (component components)
1330 (clear-ir1-info component))
1334 ;;; Actually compile any stuff that has been queued up for block
1336 (defun finish-block-compilation ()
1337 (when *block-compile*
1338 (when *top-level-lambdas*
1339 (compile-top-level (nreverse *top-level-lambdas*) nil)
1340 (setq *top-level-lambdas* ()))
1341 (setq *block-compile* nil)
1342 (setq *entry-points* nil)))
1344 ;;; Read all forms from INFO and compile them, with output to OBJECT.
1345 ;;; Return (VALUES NIL WARNINGS-P FAILURE-P).
1346 (defun sub-compile-file (info &optional d-s-info)
1347 (declare (type source-info info))
1348 (let* (;; These are bound in WITH-COMPILATION-UNIT now. -- WHN 20000308
1349 #+nil (*compiler-error-count* 0)
1350 #+nil (*compiler-warning-count* 0)
1351 #+nil (*compiler-style-warning-count* 0)
1352 #+nil (*compiler-note-count* 0)
1353 (*block-compile* *block-compile-argument*)
1354 (*package* (sane-package))
1355 (*initial-package* (sane-package))
1356 (*initial-cookie* *default-cookie*)
1357 (*initial-interface-cookie* *default-interface-cookie*)
1358 (*default-cookie* (copy-cookie *initial-cookie*))
1359 (*default-interface-cookie*
1360 (copy-cookie *initial-interface-cookie*))
1361 (*lexenv* (make-null-lexenv))
1362 (*converting-for-interpreter* nil)
1363 (*source-info* info)
1364 (sb!xc:*compile-file-pathname* nil)
1365 (sb!xc:*compile-file-truename* nil)
1366 (*top-level-lambdas* ())
1367 (*pending-top-level-lambdas* ())
1368 (*compiler-error-bailout*
1370 (compiler-mumble "~2&; fatal error, aborting compilation~%")
1371 (return-from sub-compile-file (values nil t t))))
1372 (*current-path* nil)
1373 (*last-source-context* nil)
1374 (*last-original-source* nil)
1375 (*last-source-form* nil)
1376 (*last-format-string* nil)
1377 (*last-format-args* nil)
1378 (*last-message-count* 0)
1379 (*info-environment* (or *backend-info-environment*
1380 *info-environment*))
1381 (*gensym-counter* 0))
1382 (with-compilation-values
1383 (sb!xc:with-compilation-unit ()
1386 (process-sources info)
1388 (finish-block-compilation)
1389 (compile-top-level-lambdas () t)
1390 (let ((object *compile-object*))
1392 (fasl-file (fasl-dump-source-info info object))
1393 (core-object (fix-core-source-info info object d-s-info))
1397 ;;; Return a list of pathnames for the named files. All the files must
1399 (defun verify-source-files (stuff)
1400 (let* ((stuff (if (listp stuff) stuff (list stuff)))
1401 (default-host (make-pathname
1402 :host (pathname-host (pathname (first stuff))))))
1403 (flet ((try-with-type (path type error-p)
1404 (let ((new (merge-pathnames
1405 path (make-pathname :type type
1406 :defaults default-host))))
1407 (if (probe-file new)
1409 (and error-p (truename new))))))
1411 (error "can't compile with no source files"))
1412 (mapcar #'(lambda (x)
1413 (let ((x (pathname x)))
1414 (cond ((typep x 'logical-pathname)
1415 (try-with-type x "LISP" t))
1417 ((try-with-type x "lisp" nil))
1418 ((try-with-type x "lisp" t)))))
1421 (defun elapsed-time-to-string (tsec)
1422 (multiple-value-bind (tmin sec) (truncate tsec 60)
1423 (multiple-value-bind (thr min) (truncate tmin 60)
1424 (format nil "~D:~2,'0D:~2,'0D" thr min sec))))
1426 ;;; Print some junk at the beginning and end of compilation.
1427 (defun start-error-output (source-info)
1428 (declare (type source-info source-info))
1429 (dolist (x (source-info-files source-info))
1430 (compiler-mumble "~&; compiling file ~S (written ~A):~%"
1431 (namestring (file-info-name x))
1432 (sb!int:format-universal-time nil
1433 (file-info-write-date x)
1436 :print-timezone nil)))
1439 (defun finish-error-output (source-info won)
1440 (declare (type source-info source-info))
1441 (compiler-mumble "~&; compilation ~:[aborted after~;finished in~] ~A~&"
1443 (elapsed-time-to-string
1444 (- (get-universal-time)
1445 (source-info-start-time source-info))))
1448 ;;; Open some files and call SUB-COMPILE-FILE. If something unwinds
1449 ;;; out of the compile, then abort the writing of the output file, so
1450 ;;; we don't overwrite it with known garbage.
1451 (defun sb!xc:compile-file
1454 (output-file (cfp-output-file-default input-file))
1455 ;; FIXME: ANSI doesn't seem to say anything about
1456 ;; *COMPILE-VERBOSE* and *COMPILE-PRINT* being rebound by this
1458 ((:verbose sb!xc:*compile-verbose*) sb!xc:*compile-verbose*)
1459 ((:print sb!xc:*compile-print*) sb!xc:*compile-print*)
1460 (external-format :default)
1461 ((:block-compile *block-compile-argument*) nil)
1462 ((:entry-points *entry-points*) nil)
1463 ((:byte-compile *byte-compile*) *byte-compile-default*))
1465 "Compile INPUT-FILE, producing a corresponding fasl file.
1467 The name of the fasl to output.
1469 Determines whether multiple functions are compiled together as a unit,
1470 resolving function references at compile time. NIL means that global
1471 function names are never resolved at compilation time.
1473 This specifies a list of function names for functions in the file(s) that
1474 must be given global definitions. This only applies to block
1475 compilation. If the value is NIL (the default) then all functions
1476 will be globally defined.
1477 :Byte-Compile {T | NIL | :MAYBE}
1478 Determines whether to compile into interpreted byte code instead of
1479 machine instructions. Byte code is several times smaller, but much
1480 slower. If :MAYBE, then only byte-compile when SPEED is 0 and
1481 DEBUG <= 1. The default is the value of SB-EXT:*BYTE-COMPILE-DEFAULT*,
1482 which is initially :MAYBE."
1483 (unless (eq external-format :default)
1484 (error "Non-:DEFAULT EXTERNAL-FORMAT values are not supported."))
1485 (let* ((fasl-file nil)
1486 (output-file-name nil)
1489 (failure-p t) ; T in case error keeps this from being set later
1490 ;; KLUDGE: The listifying and unlistifying in the next calls
1491 ;; is to interface to old CMU CL code which accepted and
1492 ;; returned lists of multiple source files. It would be
1493 ;; cleaner to redo VERIFY-SOURCE-FILES and as
1494 ;; VERIFY-SOURCE-FILE, accepting a single source file, and
1495 ;; do a similar transformation on MAKE-FILE-SOURCE-INFO too.
1497 (input-pathname (first (verify-source-files (list input-file))))
1498 (source-info (make-file-source-info (list input-pathname))))
1502 (setq output-file-name
1503 (sb!xc:compile-file-pathname input-file
1504 :output-file output-file))
1506 (open-fasl-file output-file-name
1507 (namestring input-pathname)
1508 (eq *byte-compile* t))))
1510 (when sb!xc:*compile-verbose*
1511 (start-error-output source-info))
1512 (let ((*compile-object* fasl-file)
1514 (multiple-value-setq (dummy warnings-p failure-p)
1515 (sub-compile-file source-info)))
1516 (setq compile-won t))
1518 (close-source-info source-info)
1521 (close-fasl-file fasl-file (not compile-won))
1522 (setq output-file-name (pathname (fasl-file-stream fasl-file)))
1523 (when (and compile-won sb!xc:*compile-verbose*)
1524 (compiler-mumble "~2&; ~A written~%" (namestring output-file-name))))
1526 (when sb!xc:*compile-verbose*
1527 (finish-error-output source-info compile-won)))
1529 (values (if output-file
1530 ;; Hack around filesystem race condition...
1531 (or (probe-file output-file-name) output-file-name)
1536 ;;; a helper function for COMPILE-FILE-PATHNAME: the default for
1537 ;;; the OUTPUT-FILE argument
1539 ;;; ANSI: The defaults for the OUTPUT-FILE are taken from the pathname
1540 ;;; that results from merging the INPUT-FILE with the value of
1541 ;;; *DEFAULT-PATHNAME-DEFAULTS*, except that the type component should
1542 ;;; default to the appropriate implementation-defined default type for
1544 (defun cfp-output-file-default (input-file)
1545 (let* ((output-type (make-pathname :type *backend-fasl-file-type*))
1546 (merge1 (merge-pathnames output-type input-file))
1547 (merge2 (merge-pathnames merge1 *default-pathname-defaults*)))
1550 ;;; KLUDGE: Part of the ANSI spec for this seems contradictory:
1551 ;;; If INPUT-FILE is a logical pathname and OUTPUT-FILE is unsupplied,
1552 ;;; the result is a logical pathname. If INPUT-FILE is a logical
1553 ;;; pathname, it is translated into a physical pathname as if by
1554 ;;; calling TRANSLATE-LOGICAL-PATHNAME.
1555 ;;; So I haven't really tried to make this precisely ANSI-compatible
1556 ;;; at the level of e.g. whether it returns logical pathname or a
1557 ;;; physical pathname. Patches to make it more correct are welcome.
1558 ;;; -- WHN 2000-12-09
1559 (defun sb!xc:compile-file-pathname (input-file
1561 (output-file (cfp-output-file-default
1565 "Return a pathname describing what file COMPILE-FILE would write to given
1567 (pathname output-file))