1;;;; the top level interfaces to the compiler, plus some other 2;;;; compiler-related stuff (e.g. CL:CALL-ARGUMENTS-LIMIT) which 3;;;; doesn't obviously belong anywhere else 4 5;;;; This software is part of the SBCL system. See the README file for 6;;;; more information. 7;;;; 8;;;; This software is derived from the CMU CL system, which was 9;;;; written at Carnegie Mellon University and released into the 10;;;; public domain. The software is in the public domain and is 11;;;; provided with absolutely no warranty. See the COPYING and CREDITS 12;;;; files for more information. 13 14(in-package "SB!C") 15 16;;; FIXME: Doesn't this belong somewhere else, like early-c.lisp? 17(declaim (special *constants* *free-vars* *component-being-compiled* 18 *free-funs* *source-paths* 19 *undefined-warnings* *compiler-error-count* 20 *compiler-warning-count* *compiler-style-warning-count* 21 *compiler-note-count* 22 *compiler-error-bailout* 23 *last-format-string* *last-format-args* 24 *last-message-count* *last-error-context* 25 *lexenv* *fun-names-in-this-file* 26 *allow-instrumenting*)) 27 28;;; Whether reference to a thing which cannot be defined causes a full 29;;; warning. 30(defvar *flame-on-necessarily-undefined-thing* nil) 31 32(defvar *check-consistency* nil) 33 34;;; Set to NIL to disable loop analysis for register allocation. 35(defvar *loop-analyze* t) 36 37;;; Bind this to a stream to capture various internal debugging output. 38(defvar *compiler-trace-output* nil) 39 40;;; The current block compilation state. These are initialized to the 41;;; :BLOCK-COMPILE and :ENTRY-POINTS arguments that COMPILE-FILE was 42;;; called with. 43;;; 44;;; *BLOCK-COMPILE-ARG* holds the original value of the :BLOCK-COMPILE 45;;; argument, which overrides any internal declarations. 46(defvar *block-compile*) 47(defvar *block-compile-arg*) 48(declaim (type (member nil t :specified) *block-compile* *block-compile-arg*)) 49(defvar *entry-points*) 50(declaim (list *entry-points*)) 51 52;;; When block compiling, used by PROCESS-FORM to accumulate top level 53;;; lambdas resulting from compiling subforms. (In reverse order.) 54(defvar *toplevel-lambdas*) 55(declaim (list *toplevel-lambdas*)) 56 57;;; The current non-macroexpanded toplevel form as printed when 58;;; *compile-print* is true. 59(defvar *top-level-form-noted* nil) 60 61(defvar sb!xc:*compile-verbose* t 62 #!+sb-doc 63 "The default for the :VERBOSE argument to COMPILE-FILE.") 64(defvar sb!xc:*compile-print* t 65 #!+sb-doc 66 "The default for the :PRINT argument to COMPILE-FILE.") 67(defvar *compile-progress* nil 68 #!+sb-doc 69 "When this is true, the compiler prints to *STANDARD-OUTPUT* progress 70 information about the phases of compilation of each function. (This 71 is useful mainly in large block compilations.)") 72 73(defvar sb!xc:*compile-file-pathname* nil 74 #!+sb-doc 75 "The defaulted pathname of the file currently being compiled, or NIL if not 76 compiling.") 77(defvar sb!xc:*compile-file-truename* nil 78 #!+sb-doc 79 "The TRUENAME of the file currently being compiled, or NIL if not 80 compiling.") 81 82(declaim (type (or pathname null) 83 sb!xc:*compile-file-pathname* 84 sb!xc:*compile-file-truename*)) 85 86;;; the SOURCE-INFO structure for the current compilation. This is 87;;; null globally to indicate that we aren't currently in any 88;;; identifiable compilation. 89(defvar *source-info* nil) 90 91;;; This is true if we are within a WITH-COMPILATION-UNIT form (which 92;;; normally causes nested uses to be no-ops). 93(defvar *in-compilation-unit* nil) 94 95;;; Count of the number of compilation units dynamically enclosed by 96;;; the current active WITH-COMPILATION-UNIT that were unwound out of. 97(defvar *aborted-compilation-unit-count*) 98 99;;; Mumble conditional on *COMPILE-PROGRESS*. 100(defun maybe-mumble (&rest foo) 101 (when *compile-progress* 102 (compiler-mumble "~&") 103 (pprint-logical-block (*standard-output* nil :per-line-prefix "; ") 104 (apply #'compiler-mumble foo)))) 105 106(deftype object () '(or fasl-output core-object null)) 107 108(defvar *compile-object* nil) 109(declaim (type object *compile-object*)) 110(defvar *compile-toplevel-object* nil) 111 112(defvar *emit-cfasl* nil) 113 114(defvar *fopcompile-label-counter*) 115 116;; Used during compilation to map code paths to the matching 117;; instrumentation conses. 118(defvar *code-coverage-records* nil) 119;; Used during compilation to keep track of with source paths have been 120;; instrumented in which blocks. 121(defvar *code-coverage-blocks* nil) 122;; Stores the code coverage instrumentation results. Keys are namestrings, the 123;; value is a list of (CONS PATH STATE), where STATE is +CODE-COVERAGE-UNMARKED+ 124;; for a path that has not been visited, and T for one that has. 125(defvar *code-coverage-info* (make-hash-table :test 'equal)) 126 127 128;;;; WITH-COMPILATION-UNIT and WITH-COMPILATION-VALUES 129 130(defmacro sb!xc:with-compilation-unit (options &body body) 131 #!+sb-doc 132 "Affects compilations that take place within its dynamic extent. It is 133intended to be eg. wrapped around the compilation of all files in the same system. 134 135Following options are defined: 136 137 :OVERRIDE Boolean-Form 138 One of the effects of this form is to delay undefined warnings until the 139 end of the form, instead of giving them at the end of each compilation. 140 If OVERRIDE is NIL (the default), then the outermost 141 WITH-COMPILATION-UNIT form grabs the undefined warnings. Specifying 142 OVERRIDE true causes that form to grab any enclosed warnings, even if it 143 is enclosed by another WITH-COMPILATION-UNIT. 144 145 :POLICY Optimize-Declaration-Form 146 Provides dynamic scoping for global compiler optimization qualities and 147 restrictions, limiting effects of subsequent OPTIMIZE proclamations and 148 calls to SB-EXT:RESTRICT-COMPILER-POLICY to the dynamic scope of BODY. 149 150 If OVERRIDE is false, specified POLICY is merged with current global 151 policy. If OVERRIDE is true, current global policy, including any 152 restrictions, is discarded in favor of the specified POLICY. 153 154 Supplying POLICY NIL is equivalent to the option not being supplied at 155 all, ie. dynamic scoping of policy does not take place. 156 157 This option is an SBCL-specific experimental extension: Interface 158 subject to change. 159 160 :SOURCE-NAMESTRING Namestring-Form 161 Attaches the value returned by the Namestring-Form to the internal 162 debug-source information as the namestring of the source file. Normally 163 the namestring of the input-file for COMPILE-FILE is used: this option 164 can be used to provide source-file information for functions compiled 165 using COMPILE, or to override the input-file of COMPILE-FILE. 166 167 If both an outer and an inner WITH-COMPILATION-UNIT provide a 168 SOURCE-NAMESTRING, the inner one takes precedence. Unaffected 169 by :OVERRIDE. 170 171 This is an SBCL-specific extension. 172 173 :SOURCE-PLIST Plist-Form 174 Attaches the value returned by the Plist-Form to internal debug-source 175 information of functions compiled in within the dynamic extent of BODY. 176 177 Primarily for use by development environments, in order to eg. associate 178 function definitions with editor-buffers. Can be accessed using 179 SB-INTROSPECT:DEFINITION-SOURCE-PLIST. 180 181 If an outer WITH-COMPILATION-UNIT form also provide a SOURCE-PLIST, it 182 is appended to the end of the provided SOURCE-PLIST. Unaffected 183 by :OVERRIDE. 184 185 This is an SBCL-specific extension. 186 187Examples: 188 189 ;; Prevent proclamations from the file leaking, and restrict 190 ;; SAFETY to 3 -- otherwise uses the current global policy. 191 (with-compilation-unit (:policy '(optimize)) 192 (restrict-compiler-policy 'safety 3) 193 (load \"foo.lisp\")) 194 195 ;; Using default policy instead of the current global one, 196 ;; except for DEBUG 3. 197 (with-compilation-unit (:policy '(optimize debug) 198 :override t) 199 (load \"foo.lisp\")) 200 201 ;; Same as if :POLICY had not been specified at all: SAFETY 3 202 ;; proclamation leaks out from WITH-COMPILATION-UNIT. 203 (with-compilation-unit (:policy nil) 204 (declaim (optimize safety)) 205 (load \"foo.lisp\")) 206" 207 `(%with-compilation-unit (lambda () ,@body) ,@options)) 208 209(defvar *source-plist* nil) 210(defvar *source-namestring* nil) 211 212(defun %with-compilation-unit (fn &key override policy source-plist source-namestring) 213 (declare (type function fn)) 214 (flet ((with-it () 215 (let ((succeeded-p nil) 216 (*source-plist* (append source-plist *source-plist*)) 217 (*source-namestring* 218 (possibly-base-stringize 219 (or source-namestring *source-namestring*)))) 220 (if (and *in-compilation-unit* (not override)) 221 ;; Inside another WITH-COMPILATION-UNIT, a WITH-COMPILATION-UNIT is 222 ;; ordinarily (unless OVERRIDE) basically a no-op. 223 (unwind-protect 224 (multiple-value-prog1 (funcall fn) (setf succeeded-p t)) 225 (unless succeeded-p 226 (incf *aborted-compilation-unit-count*))) 227 (let ((*aborted-compilation-unit-count* 0) 228 (*compiler-error-count* 0) 229 (*compiler-warning-count* 0) 230 (*compiler-style-warning-count* 0) 231 (*compiler-note-count* 0) 232 (*undefined-warnings* nil) 233 (*in-compilation-unit* t)) 234 (handler-bind ((parse-unknown-type 235 (lambda (c) 236 (note-undefined-reference 237 (parse-unknown-type-specifier c) 238 :type)))) 239 (unwind-protect 240 (multiple-value-prog1 (funcall fn) (setf succeeded-p t)) 241 (unless succeeded-p 242 (incf *aborted-compilation-unit-count*)) 243 (summarize-compilation-unit (not succeeded-p))))))))) 244 (if policy 245 (let ((*policy* (process-optimize-decl policy (unless override *policy*))) 246 (*policy-restrictions* (unless override *policy-restrictions*))) 247 (with-it)) 248 (with-it)))) 249 250;;; Is NAME something that no conforming program can rely on 251;;; defining? 252(defun name-reserved-by-ansi-p (name kind) 253 (ecase kind 254 (:function 255 (eq (symbol-package (fun-name-block-name name)) 256 *cl-package*)) 257 (:type 258 (let ((symbol (typecase name 259 (symbol name) 260 ((cons symbol) (car name)) 261 (t (return-from name-reserved-by-ansi-p nil))))) 262 (eq (symbol-package symbol) *cl-package*))))) 263 264;;; This is to be called at the end of a compilation unit. It signals 265;;; any residual warnings about unknown stuff, then prints the total 266;;; error counts. ABORT-P should be true when the compilation unit was 267;;; aborted by throwing out. ABORT-COUNT is the number of dynamically 268;;; enclosed nested compilation units that were aborted. 269(defun summarize-compilation-unit (abort-p) 270 (let (summary) 271 (unless abort-p 272 (handler-bind ((style-warning #'compiler-style-warning-handler) 273 (warning #'compiler-warning-handler)) 274 275 (let ((undefs (sort *undefined-warnings* #'string< 276 :key (lambda (x) 277 (let ((x (undefined-warning-name x))) 278 (if (symbolp x) 279 (symbol-name x) 280 (prin1-to-string x))))))) 281 (dolist (kind '(:variable :function :type)) 282 (let ((names (mapcar #'undefined-warning-name 283 (remove kind undefs :test #'neq 284 :key #'undefined-warning-kind)))) 285 (when names (push (cons kind names) summary)))) 286 (dolist (undef undefs) 287 (let ((name (undefined-warning-name undef)) 288 (kind (undefined-warning-kind undef)) 289 (warnings (undefined-warning-warnings undef)) 290 (undefined-warning-count (undefined-warning-count undef))) 291 (dolist (*compiler-error-context* warnings) 292 (if #-sb-xc-host (and (member kind '(:function :type)) 293 (name-reserved-by-ansi-p name kind) 294 *flame-on-necessarily-undefined-thing*) 295 #+sb-xc-host nil 296 (ecase kind 297 (:function 298 (compiler-warn 299 "~@<The function ~S is undefined, and its name is ~ 300 reserved by ANSI CL so that even if it were ~ 301 defined later, the code doing so would not be ~ 302 portable.~:@>" name)) 303 (:type 304 (if (and (consp name) (eq 'quote (car name))) 305 (compiler-warn 306 "~@<Undefined type ~S. The name starts with ~S: ~ 307 probably use of a quoted type name in a context ~ 308 where the name is not evaluated.~:@>" 309 name 'quote) 310 (compiler-warn 311 "~@<Undefined type ~S. Note that name ~S is ~ 312 reserved by ANSI CL, so code defining a type with ~ 313 that name would not be portable.~:@>" name 314 name)))) 315 (if (eq kind :variable) 316 (compiler-warn "undefined ~(~A~): ~S" kind name) 317 (compiler-style-warn "undefined ~(~A~): ~S" kind name)))) 318 (let ((warn-count (length warnings))) 319 (when (and warnings (> undefined-warning-count warn-count)) 320 (let ((more (- undefined-warning-count warn-count))) 321 (if (eq kind :variable) 322 (compiler-warn 323 "~W more use~:P of undefined ~(~A~) ~S" 324 more kind name) 325 (compiler-style-warn 326 "~W more use~:P of undefined ~(~A~) ~S" 327 more kind name)))))))))) 328 329 (unless (and (not abort-p) 330 (zerop *aborted-compilation-unit-count*) 331 (zerop *compiler-error-count*) 332 (zerop *compiler-warning-count*) 333 (zerop *compiler-style-warning-count*) 334 (zerop *compiler-note-count*)) 335 (pprint-logical-block (*error-output* nil :per-line-prefix "; ") 336 (format *error-output* "~&compilation unit ~:[finished~;aborted~]" 337 abort-p) 338 (dolist (cell summary) 339 (destructuring-bind (kind &rest names) cell 340 (format *error-output* 341 "~& Undefined ~(~A~)~p:~ 342 ~% ~{~<~% ~1:;~S~>~^ ~}" 343 kind (length names) names))) 344 (format *error-output* "~[~:;~:*~& caught ~W fatal ERROR condition~:P~]~ 345 ~[~:;~:*~& caught ~W ERROR condition~:P~]~ 346 ~[~:;~:*~& caught ~W WARNING condition~:P~]~ 347 ~[~:;~:*~& caught ~W STYLE-WARNING condition~:P~]~ 348 ~[~:;~:*~& printed ~W note~:P~]" 349 *aborted-compilation-unit-count* 350 *compiler-error-count* 351 *compiler-warning-count* 352 *compiler-style-warning-count* 353 *compiler-note-count*)) 354 (terpri *error-output*) 355 (force-output *error-output*)))) 356 357;; Bidrectional map between IR1/IR2/assembler abstractions 358;; and a corresponding small integer identifier. One direction could be done 359;; by adding the integer ID as an object slot, but we want both directions. 360(defstruct (compiler-ir-obj-map (:conc-name objmap-) 361 (:constructor make-compiler-ir-obj-map ()) 362 (:copier nil) 363 (:predicate nil)) 364 (obj-to-id (make-hash-table :test 'eq) :read-only t) 365 (id-to-cont (make-array 10) :type simple-vector) ; number -> CTRAN or LVAR 366 (id-to-tn (make-array 10) :type simple-vector) ; number -> TN 367 (id-to-label (make-array 10) :type simple-vector) ; number -> LABEL 368 (cont-num 0 :type fixnum) 369 (tn-id 0 :type fixnum) 370 (label-id 0 :type fixnum)) 371 372(declaim (type compiler-ir-obj-map *compiler-ir-obj-map*)) 373(defvar *compiler-ir-obj-map*) 374 375;;; Evaluate BODY, then return (VALUES BODY-VALUE WARNINGS-P 376;;; FAILURE-P), where BODY-VALUE is the first value of the body, and 377;;; WARNINGS-P and FAILURE-P are as in CL:COMPILE or CL:COMPILE-FILE. 378(defmacro with-compilation-values (&body body) 379 ;; This binding could just as well be in WITH-IR1-NAMESPACE, but 380 ;; since it's primarily a debugging tool, it's nicer to have 381 ;; a wider unique scope by ID. 382 `(let ((*compiler-ir-obj-map* (make-compiler-ir-obj-map))) 383 (unwind-protect 384 (let ((*warnings-p* nil) 385 (*failure-p* nil)) 386 (handler-bind ((compiler-error #'compiler-error-handler) 387 (style-warning #'compiler-style-warning-handler) 388 (warning #'compiler-warning-handler)) 389 (values (progn ,@body) *warnings-p* *failure-p*))) 390 (let ((map *compiler-ir-obj-map*)) 391 (clrhash (objmap-obj-to-id map)) 392 (fill (objmap-id-to-cont map) nil) 393 (fill (objmap-id-to-tn map) nil) 394 (fill (objmap-id-to-label map) nil))))) 395 396;;; THING is a kind of thing about which we'd like to issue a warning, 397;;; but showing at most one warning for a given set of <THING,FMT,ARGS>. 398;;; The compiler does a good job of making sure not to print repetitive 399;;; warnings for code that it compiles, but this solves a different problem. 400;;; Specifically, for a warning from PARSE-LAMBDA-LIST, there are three calls: 401;;; - once in the expander for defmacro itself, as it calls MAKE-MACRO-LAMBDA 402;;; which calls PARSE-LAMBDA-LIST. This is the toplevel form processing. 403;;; - again for :compile-toplevel, where the DS-BIND calls PARSE-LAMBDA-LIST. 404;;; If compiling in compile-toplevel, then *COMPILE-OBJECT* is a core object, 405;;; but if interpreting, then it is still a fasl. 406;;; - once for compiling to fasl. *COMPILE-OBJECT* is a fasl. 407;;; I'd have liked the data to be associated with the fasl, except that 408;;; as indicated above, the second line hides some information. 409(defun style-warn-once (thing fmt &rest args) 410 (declare (special *compile-object*)) 411 (let* ((source-info *source-info*) 412 (file-info (and (source-info-p source-info) 413 (source-info-file-info source-info))) 414 (file-compiling-p (file-info-p file-info))) 415 (flet ((match-p (entry &aux (rest (cdr entry))) 416 ;; THING is compared by EQ, FMT by STRING=. 417 (and (eq (car entry) thing) 418 (string= (car rest) fmt) 419 ;; We don't want to walk into default values, 420 ;; e.g. (&optional (b #<insane-struct)) 421 ;; because #<insane-struct> might be circular. 422 (equal-but-no-car-recursion (cdr rest) args)))) 423 (unless (and file-compiling-p 424 (find-if #'match-p 425 (file-info-style-warning-tracker file-info))) 426 (when file-compiling-p 427 (push (list* thing fmt args) 428 (file-info-style-warning-tracker file-info))) 429 (apply 'style-warn fmt args))))) 430 431;;;; component compilation 432 433(defparameter *max-optimize-iterations* 3 ; ARB 434 #!+sb-doc 435 "The upper limit on the number of times that we will consecutively do IR1 436optimization that doesn't introduce any new code. A finite limit is 437necessary, since type inference may take arbitrarily long to converge.") 438 439(defevent ir1-optimize-until-done "IR1-OPTIMIZE-UNTIL-DONE called") 440(defevent ir1-optimize-maxed-out "hit *MAX-OPTIMIZE-ITERATIONS* limit") 441 442;;; Repeatedly optimize COMPONENT until no further optimizations can 443;;; be found or we hit our iteration limit. When we hit the limit, we 444;;; clear the component and block REOPTIMIZE flags to discourage the 445;;; next optimization attempt from pounding on the same code. 446(defun ir1-optimize-until-done (component) 447 (declare (type component component)) 448 (maybe-mumble "opt") 449 (event ir1-optimize-until-done) 450 (let ((count 0) 451 (cleared-reanalyze nil) 452 (fastp nil)) 453 (loop 454 (when (component-reanalyze component) 455 (setq count 0) 456 (setq cleared-reanalyze t) 457 (setf (component-reanalyze component) nil)) 458 (setf (component-reoptimize component) nil) 459 (ir1-optimize component fastp) 460 (cond ((component-reoptimize component) 461 (incf count) 462 (when (and (>= count *max-optimize-iterations*) 463 (not (component-reanalyze component)) 464 (eq (component-reoptimize component) :maybe)) 465 (maybe-mumble "*") 466 (cond ((retry-delayed-ir1-transforms :optimize) 467 (maybe-mumble "+") 468 (setq count 0)) 469 (t 470 (event ir1-optimize-maxed-out) 471 (setf (component-reoptimize component) nil) 472 (do-blocks (block component) 473 (setf (block-reoptimize block) nil)) 474 (return))))) 475 ((retry-delayed-ir1-transforms :optimize) 476 (setf count 0) 477 (maybe-mumble "+")) 478 (t 479 (maybe-mumble " ") 480 (return))) 481 (setq fastp (>= count *max-optimize-iterations*)) 482 (maybe-mumble (if fastp "-" "."))) 483 (when cleared-reanalyze 484 (setf (component-reanalyze component) t))) 485 (values)) 486 487(defparameter *constraint-propagate* t) 488 489;;; KLUDGE: This was bumped from 5 to 10 in a DTC patch ported by MNA 490;;; from CMU CL into sbcl-0.6.11.44, the same one which allowed IR1 491;;; transforms to be delayed. Either DTC or MNA or both didn't explain 492;;; why, and I don't know what the rationale was. -- WHN 2001-04-28 493;;; 494;;; FIXME: It would be good to document why it's important to have a 495;;; large value here, and what the drawbacks of an excessively large 496;;; value are; and it might also be good to make it depend on 497;;; optimization policy. 498(defparameter *reoptimize-after-type-check-max* 10) 499 500(defevent reoptimize-maxed-out 501 "*REOPTIMIZE-AFTER-TYPE-CHECK-MAX* exceeded.") 502 503;;; Iterate doing FIND-DFO until no new dead code is discovered. 504(defun dfo-as-needed (component) 505 (declare (type component component)) 506 (when (component-reanalyze component) 507 (maybe-mumble "DFO") 508 (loop 509 (find-dfo component) 510 (unless (component-reanalyze component) 511 (maybe-mumble " ") 512 (return)) 513 (maybe-mumble "."))) 514 (values)) 515 516;;; Do all the IR1 phases for a non-top-level component. 517(defun ir1-phases (component) 518 (declare (type component component)) 519 (aver-live-component component) 520 (let ((*constraint-universe* (make-array 64 ; arbitrary, but don't 521 ;make this 0. 522 :fill-pointer 0 :adjustable t)) 523 (loop-count 1) 524 (*delayed-ir1-transforms* nil)) 525 (declare (special *constraint-universe* *delayed-ir1-transforms*)) 526 (loop 527 (ir1-optimize-until-done component) 528 (when (or (component-new-functionals component) 529 (component-reanalyze-functionals component)) 530 (maybe-mumble "locall ") 531 (locall-analyze-component component)) 532 (dfo-as-needed component) 533 (when *constraint-propagate* 534 (maybe-mumble "constraint ") 535 (constraint-propagate component)) 536 (when (retry-delayed-ir1-transforms :constraint) 537 (maybe-mumble "Rtran ")) 538 (flet ((want-reoptimization-p () 539 (or (component-reoptimize component) 540 (component-reanalyze component) 541 (component-new-functionals component) 542 (component-reanalyze-functionals component)))) 543 (unless (and (want-reoptimization-p) 544 ;; We delay the generation of type checks until 545 ;; the type constraints have had time to 546 ;; propagate, else the compiler can confuse itself. 547 (< loop-count (- *reoptimize-after-type-check-max* 4))) 548 (maybe-mumble "type ") 549 (generate-type-checks component) 550 (unless (want-reoptimization-p) 551 (return)))) 552 (when (>= loop-count *reoptimize-after-type-check-max*) 553 (maybe-mumble "[reoptimize limit]") 554 (event reoptimize-maxed-out) 555 (return)) 556 (incf loop-count))) 557 558 (when *check-consistency* 559 (do-blocks-backwards (block component) 560 (awhen (flush-dead-code block) 561 (let ((*compiler-error-context* it)) 562 (compiler-warn "dead code detected at the end of ~S" 563 'ir1-phases))))) 564 565 (ir1-finalize component) 566 (values)) 567 568#!+immobile-code 569(progn 570 (declaim (type (member :immobile :dynamic) *compile-to-memory-space*)) 571 ;; COMPILE-FILE puts all nontoplevel code in immobile space, but COMPILE 572 ;; offers a choice. Because the collector does not run often enough (yet), 573 ;; COMPILE usually places code in the dynamic space managed by our copying GC. 574 ;; Change this variable if your application always demands immobile code. 575 ;; The real default is set to :DYNAMIC in make-target-2-load.lisp 576 (defvar *compile-to-memory-space* :immobile) ; BUILD-TIME default 577 (defun code-immobile-p (node-or-component) 578 (if (fasl-output-p *compile-object*) 579 (neq (component-kind (if (node-p node-or-component) 580 (node-component node-or-component) 581 node-or-component)) 582 :toplevel) 583 (eq *compile-to-memory-space* :immobile)))) 584 585(defun %compile-component (component) 586 (let ((*code-segment* nil) 587 (*elsewhere* nil) 588 #!+inline-constants (*unboxed-constants* nil)) 589 (maybe-mumble "GTN ") 590 (gtn-analyze component) 591 (maybe-mumble "LTN ") 592 (ltn-analyze component) 593 (dfo-as-needed component) 594 (maybe-mumble "control ") 595 (control-analyze component #'make-ir2-block) 596 597 (when (or (ir2-component-values-receivers (component-info component)) 598 (component-dx-lvars component)) 599 (maybe-mumble "stack ") 600 (find-dominators component) 601 (stack-analyze component) 602 ;; Assign BLOCK-NUMBER for any cleanup blocks introduced by 603 ;; stack analysis. There shouldn't be any unreachable code after 604 ;; control, so this won't delete anything. 605 (dfo-as-needed component)) 606 607 (unwind-protect 608 (progn 609 (maybe-mumble "IR2tran ") 610 (init-assembler) 611 (entry-analyze component) 612 (ir2-convert component) 613 614 (when (policy *lexenv* (>= speed compilation-speed)) 615 (maybe-mumble "copy ") 616 (copy-propagate component)) 617 618 (ir2-optimize component) 619 620 (select-representations component) 621 622 (when *check-consistency* 623 (maybe-mumble "check2 ") 624 (check-ir2-consistency component)) 625 626 (delete-unreferenced-tns component) 627 628 (maybe-mumble "life ") 629 (lifetime-analyze component) 630 631 (when *compile-progress* 632 (compiler-mumble "") ; Sync before doing more output. 633 (pre-pack-tn-stats component *standard-output*)) 634 635 (when *check-consistency* 636 (maybe-mumble "check-life ") 637 (check-life-consistency component)) 638 639 (maybe-mumble "pack ") 640 (sb!regalloc:pack component) 641 642 (when *check-consistency* 643 (maybe-mumble "check-pack ") 644 (check-pack-consistency component)) 645 646 (optimize-constant-loads component) 647 (when *compiler-trace-output* 648 (describe-component component *compiler-trace-output*) 649 (describe-ir2-component component *compiler-trace-output*)) 650 651 (maybe-mumble "code ") 652 653 (multiple-value-bind (code-length fixup-notes) 654 (let (#!+immobile-code 655 (*code-is-immobile* (code-immobile-p component))) 656 (generate-code component)) 657 658 #-sb-xc-host 659 (when *compiler-trace-output* 660 (format *compiler-trace-output* 661 "~|~%disassembly of code for ~S~2%" component) 662 (sb!disassem:disassemble-assem-segment *code-segment* 663 *compiler-trace-output*)) 664 665 (etypecase *compile-object* 666 (fasl-output 667 (maybe-mumble "fasl") 668 (fasl-dump-component component 669 *code-segment* 670 code-length 671 fixup-notes 672 *compile-object*)) 673 #-sb-xc-host ; no compiling to core 674 (core-object 675 (maybe-mumble "core") 676 (make-core-component component 677 *code-segment* 678 code-length 679 fixup-notes 680 *compile-object*)) 681 (null)))))) 682 683 ;; We're done, so don't bother keeping anything around. 684 (setf (component-info component) :dead) 685 686 (values)) 687 688;;; Delete components with no external entry points before we try to 689;;; generate code. Unreachable closures can cause IR2 conversion to 690;;; puke on itself, since it is the reference to the closure which 691;;; normally causes the components to be combined. 692(defun delete-if-no-entries (component) 693 (dolist (fun (component-lambdas component) (delete-component component)) 694 (when (functional-has-external-references-p fun) 695 (return)) 696 (case (functional-kind fun) 697 (:toplevel (return)) 698 (:external 699 (unless (every (lambda (ref) 700 (eq (node-component ref) component)) 701 (leaf-refs fun)) 702 (return)))))) 703 704(defun compile-component (component) 705 706 ;; miscellaneous sanity checks 707 ;; 708 ;; FIXME: These are basically pretty wimpy compared to the checks done 709 ;; by the old CHECK-IR1-CONSISTENCY code. It would be really nice to 710 ;; make those internal consistency checks work again and use them. 711 (aver-live-component component) 712 (do-blocks (block component) 713 (aver (eql (block-component block) component))) 714 (dolist (lambda (component-lambdas component)) 715 ;; sanity check to prevent weirdness from propagating insidiously as 716 ;; far from its root cause as it did in bug 138: Make sure that 717 ;; thing-to-COMPONENT links are consistent. 718 (aver (eql (lambda-component lambda) component)) 719 (aver (eql (node-component (lambda-bind lambda)) component))) 720 721 (let* ((*component-being-compiled* component)) 722 723 ;; Record xref information before optimization. This way the 724 ;; stored xref data reflects the real source as closely as 725 ;; possible. 726 (record-component-xrefs component) 727 728 (ir1-phases component) 729 730 (when *loop-analyze* 731 (dfo-as-needed component) 732 (find-dominators component) 733 (loop-analyze component)) 734 735 #| 736 (when (and *loop-analyze* *compiler-trace-output*) 737 (labels ((print-blocks (block) 738 (format *compiler-trace-output* " ~A~%" block) 739 (when (block-loop-next block) 740 (print-blocks (block-loop-next block)))) 741 (print-loop (loop) 742 (format *compiler-trace-output* "loop=~A~%" loop) 743 (print-blocks (loop-blocks loop)) 744 (dolist (l (loop-inferiors loop)) 745 (print-loop l)))) 746 (print-loop (component-outer-loop component)))) 747 |# 748 749 ;; This should happen at some point before PHYSENV-ANALYZE, and 750 ;; after RECORD-COMPONENT-XREFS. Beyond that, I haven't really 751 ;; thought things through. -- AJB, 2014-Jun-08 752 (eliminate-dead-code component) 753 754 ;; FIXME: What is MAYBE-MUMBLE for? Do we need it any more? 755 (maybe-mumble "env ") 756 (physenv-analyze component) 757 (dfo-as-needed component) 758 759 (delete-if-no-entries component) 760 761 (unless (eq (block-next (component-head component)) 762 (component-tail component)) 763 (%compile-component component))) 764 765 (clear-constant-info) 766 767 (values)) 768 769;;;; clearing global data structures 770;;;; 771;;;; FIXME: Is it possible to get rid of this stuff, getting rid of 772;;;; global data structures entirely when possible and consing up the 773;;;; others from scratch instead of clearing and reusing them? 774 775;;; Clear the INFO in constants in the *FREE-VARS*, etc. In 776;;; addition to allowing stuff to be reclaimed, this is required for 777;;; correct assignment of constant offsets, since we need to assign a 778;;; new offset for each component. We don't clear the FUNCTIONAL-INFO 779;;; slots, since they are used to keep track of functions across 780;;; component boundaries. 781(defun clear-constant-info () 782 (maphash (lambda (k v) 783 (declare (ignore k)) 784 (setf (leaf-info v) nil) 785 (setf (constant-boxed-tn v) nil)) 786 *constants*) 787 (maphash (lambda (k v) 788 (declare (ignore k)) 789 (when (constant-p v) 790 (setf (leaf-info v) nil) 791 (setf (constant-boxed-tn v) nil))) 792 *free-vars*) 793 (values)) 794 795;;; Blow away the REFS for all global variables, and let COMPONENT 796;;; be recycled. 797(defun clear-ir1-info (component) 798 (declare (type component component)) 799 (labels ((blast (x) 800 (maphash (lambda (k v) 801 (declare (ignore k)) 802 (when (leaf-p v) 803 (setf (leaf-refs v) 804 (delete-if #'here-p (leaf-refs v))) 805 (when (basic-var-p v) 806 (setf (basic-var-sets v) 807 (delete-if #'here-p (basic-var-sets v)))))) 808 x)) 809 (here-p (x) 810 (eq (node-component x) component))) 811 (blast *free-vars*) 812 (blast *free-funs*) 813 (blast *constants*)) 814 (values)) 815 816;;;; trace output 817 818;;; Print out some useful info about COMPONENT to STREAM. 819(defun describe-component (component *standard-output*) 820 (declare (type component component)) 821 (format t "~|~%;;;; component: ~S~2%" (component-name component)) 822 (print-all-blocks component) 823 (values)) 824 825(defun describe-ir2-component (component *standard-output*) 826 (format t "~%~|~%;;;; IR2 component: ~S~2%" (component-name component)) 827 (format t "entries:~%") 828 (dolist (entry (ir2-component-entries (component-info component))) 829 (format t "~4TL~D: ~S~:[~; [closure]~]~%" 830 (label-id (entry-info-offset entry)) 831 (entry-info-name entry) 832 (entry-info-closure-tn entry))) 833 (terpri) 834 (pre-pack-tn-stats component *standard-output*) 835 (terpri) 836 (print-ir2-blocks component) 837 (terpri) 838 (values)) 839 840;;; Given a pathname, return a SOURCE-INFO structure. 841(defun make-file-source-info (file external-format &optional form-tracking-p) 842 (make-source-info 843 :file-info (make-file-info :name (truename file) 844 :untruename (merge-pathnames file) 845 :external-format external-format 846 :subforms 847 (if form-tracking-p 848 (make-array 100 :fill-pointer 0 :adjustable t)) 849 :write-date (file-write-date file)))) 850 851;;; Return a SOURCE-INFO to describe the incremental compilation of FORM. 852(defun make-lisp-source-info (form &key parent) 853 (make-source-info 854 :file-info (make-file-info :name :lisp 855 :forms (vector form) 856 :positions '#(0)) 857 :parent parent)) 858 859;;; Walk up the SOURCE-INFO list until we either reach a SOURCE-INFO 860;;; with no parent (e.g., from a REPL evaluation) or until we reach a 861;;; SOURCE-INFO whose FILE-INFO denotes a file. 862(defun get-toplevelish-file-info (&optional (source-info *source-info*)) 863 (if source-info 864 (do* ((sinfo source-info (source-info-parent sinfo)) 865 (finfo (source-info-file-info sinfo) 866 (source-info-file-info sinfo))) 867 ((or (not (source-info-p (source-info-parent sinfo))) 868 (pathnamep (file-info-name finfo))) 869 finfo)))) 870 871;;; If STREAM is present, return it, otherwise open a stream to the 872;;; current file. There must be a current file. 873;;; 874;;; FIXME: This is probably an unnecessarily roundabout way to do 875;;; things now that we process a single file in COMPILE-FILE (unlike 876;;; the old CMU CL code, which accepted multiple files). Also, the old 877;;; comment said 878;;; When we open a new file, we also reset *PACKAGE* and policy. 879;;; This gives the effect of rebinding around each file. 880;;; which doesn't seem to be true now. Check to make sure that if 881;;; such rebinding is necessary, it's still done somewhere. 882(defun get-source-stream (info) 883 (declare (type source-info info)) 884 (or (source-info-stream info) 885 (let* ((file-info (source-info-file-info info)) 886 (name (file-info-name file-info)) 887 (external-format (file-info-external-format file-info))) 888 (setf sb!xc:*compile-file-truename* name 889 sb!xc:*compile-file-pathname* (file-info-untruename file-info) 890 (source-info-stream info) 891 (let ((stream 892 (open name 893 :direction :input 894 :external-format external-format 895 ;; SBCL stream classes aren't available in the host 896 #-sb-xc-host :class 897 #-sb-xc-host 'form-tracking-stream))) 898 (when (file-info-subforms file-info) 899 (setf (form-tracking-stream-observer stream) 900 (make-form-tracking-stream-observer file-info))) 901 stream))))) 902 903;;; Close the stream in INFO if it is open. 904(defun close-source-info (info) 905 (declare (type source-info info)) 906 (let ((stream (source-info-stream info))) 907 (when stream (close stream))) 908 (setf (source-info-stream info) nil) 909 (values)) 910 911;; Loop over forms read from INFO's stream, calling FUNCTION with each. 912;; CONDITION-NAME is signaled if there is a reader error, and should be 913;; a subtype of not-so-aptly-named INPUT-ERROR-IN-COMPILE-FILE. 914(defun %do-forms-from-info (function info condition-name) 915 (declare (function function)) 916 (let* ((file-info (source-info-file-info info)) 917 (stream (get-source-stream info)) 918 (pos (file-position stream)) 919 (form 920 ;; Return a form read from STREAM; or for EOF use the trick, 921 ;; popularized by Kent Pitman, of returning STREAM itself. 922 (handler-case 923 (progn 924 ;; Reset for a new toplevel form. 925 (when (form-tracking-stream-p stream) 926 (setf (form-tracking-stream-form-start-char-pos stream) nil)) 927 (awhen (file-info-subforms file-info) 928 (setf (fill-pointer it) 0)) 929 (read-preserving-whitespace stream nil stream)) 930 (reader-error (condition) 931 (compiler-error condition-name 932 ;; We don't need to supply :POSITION here because 933 ;; READER-ERRORs already know their position in the file. 934 :condition condition 935 :stream stream)) 936 ;; ANSI, in its wisdom, says that READ should return END-OF-FILE 937 ;; (and that this is not a READER-ERROR) when it encounters end of 938 ;; file in the middle of something it's trying to read, 939 ;; making it unfortunately indistinguishable from legal EOF. 940 ;; Were it not for that, it would be more elegant to just 941 ;; handle one more condition in the HANDLER-CASE. 942 ((or end-of-file error) (condition) 943 (compiler-error 944 condition-name 945 :condition condition 946 ;; We need to supply :POSITION here because the END-OF-FILE 947 ;; condition doesn't carry the position that the user 948 ;; probably cares about, where the failed READ began. 949 :position 950 (or (and (form-tracking-stream-p stream) 951 (form-tracking-stream-form-start-byte-pos stream)) 952 pos) 953 :line/col 954 (and (form-tracking-stream-p stream) 955 (line/col-from-charpos 956 stream 957 (form-tracking-stream-form-start-char-pos stream))) 958 :stream stream))))) 959 (unless (eq form stream) ; not EOF 960 (funcall function form 961 :current-index 962 (let* ((forms (file-info-forms file-info)) 963 (current-idx (fill-pointer forms))) 964 (vector-push-extend form forms) 965 (vector-push-extend pos (file-info-positions file-info)) 966 current-idx)) 967 (%do-forms-from-info function info condition-name)))) 968 969;;; Loop over FORMS retrieved from INFO. Used by COMPILE-FILE and 970;;; LOAD when loading from a FILE-STREAM associated with a source 971;;; file. ON-ERROR is the name of a condition class that should 972;;; be signaled if anything goes wrong during a READ. 973(defmacro do-forms-from-info (((form &rest keys) info 974 &optional (on-error ''input-error-in-load)) 975 &body body) 976 (aver (symbolp form)) 977 (once-only ((info info)) 978 `(let ((*source-info* ,info)) 979 (%do-forms-from-info (lambda (,form &key ,@keys &allow-other-keys) 980 ,@body) 981 ,info ,on-error)))) 982 983;;; Read and compile the source file. 984(defun sub-sub-compile-file (info) 985 (do-forms-from-info ((form current-index) info 986 'input-error-in-compile-file) 987 (with-source-paths 988 (find-source-paths form current-index) 989 (process-toplevel-form 990 form `(original-source-start 0 ,current-index) nil))) 991 ;; It's easy to get into a situation where cold-init crashes and the only 992 ;; backtrace you get from ldb is TOP-LEVEL-FORM, which means you're anywhere 993 ;; within the 23000 or so blobs of code deferred until cold-init. 994 ;; Seeing each file finish narrows things down without the noise of :sb-show, 995 ;; but this hack messes up form positions, so it's not on unless asked for. 996 #+nil ; change to #+sb-xc-host if desired 997 (let ((file-info (get-toplevelish-file-info info))) 998 (declare (ignorable file-info)) 999 (let* ((forms (file-info-forms file-info)) 1000 (form 1001 `(write-string 1002 ,(format nil "Completed TLFs: ~A~%" (file-info-name file-info)))) 1003 (index (fill-pointer forms))) 1004 (with-source-paths 1005 (find-source-paths form index) 1006 (process-toplevel-form 1007 form `(original-source-start 0 ,index) nil))))) 1008 1009;;; Return the INDEX'th source form read from INFO and the position 1010;;; where it was read. 1011(defun find-source-root (index info) 1012 (declare (type index index) (type source-info info)) 1013 (let ((file-info (source-info-file-info info))) 1014 (values (aref (file-info-forms file-info) index) 1015 (aref (file-info-positions file-info) index)))) 1016 1017;;;; processing of top level forms 1018 1019;;; This is called by top level form processing when we are ready to 1020;;; actually compile something. If *BLOCK-COMPILE* is T, then we still 1021;;; convert the form, but delay compilation, pushing the result on 1022;;; *TOPLEVEL-LAMBDAS* instead. 1023(defun convert-and-maybe-compile (form path &optional (expand t)) 1024 (declare (list path)) 1025 #+sb-xc-host 1026 (when sb-cold::*compile-for-effect-only* 1027 (return-from convert-and-maybe-compile)) 1028 (let ((*top-level-form-noted* (note-top-level-form form t))) 1029 ;; Don't bother to compile simple objects that just sit there. 1030 (when (and form (or (symbolp form) (consp form))) 1031 (if (fopcompilable-p form expand) 1032 (let ((*fopcompile-label-counter* 0)) 1033 (fopcompile form path nil expand)) 1034 (with-ir1-namespace 1035 (let ((*lexenv* (make-lexenv 1036 :policy *policy* 1037 :handled-conditions *handled-conditions* 1038 :disabled-package-locks *disabled-package-locks*)) 1039 (tll (ir1-toplevel form path nil))) 1040 (if (eq *block-compile* t) 1041 (push tll *toplevel-lambdas*) 1042 (compile-toplevel (list tll) nil)) 1043 nil)))))) 1044 1045;;; Macroexpand FORM in the current environment with an error handler. 1046;;; We only expand one level, so that we retain all the intervening 1047;;; forms in the source path. A compiler-macro takes precedence over 1048;;; an ordinary macro as specified in CLHS 3.2.3.1 1049;;; Note that this function is _only_ for processing of toplevel forms. 1050;;; Non-toplevel forms use IR1-CONVERT-FUNCTOID which considers compiler macros. 1051(defun preprocessor-macroexpand-1 (form) 1052 (when (listp form) 1053 (let ((expansion (expand-compiler-macro form))) 1054 (unless (eq expansion form) 1055 (return-from preprocessor-macroexpand-1 1056 (values expansion t))))) 1057 (handler-bind 1058 ((error (lambda (condition) 1059 (compiler-error "(during macroexpansion of ~A)~%~A" 1060 (let ((*print-level* 2) 1061 (*print-length* 2)) 1062 (format nil "~S" form)) 1063 condition)))) 1064 (%macroexpand-1 form *lexenv*))) 1065 1066;;; Process a PROGN-like portion of a top level form. FORMS is a list of 1067;;; the forms, and PATH is the source path of the FORM they came out of. 1068;;; COMPILE-TIME-TOO is as in ANSI "3.2.3.1 Processing of Top Level Forms". 1069(defun process-toplevel-progn (forms path compile-time-too) 1070 (declare (list forms) (list path)) 1071 (dolist (form forms) 1072 (process-toplevel-form form path compile-time-too))) 1073 1074;;; Process a top level use of LOCALLY, or anything else (e.g. 1075;;; MACROLET) at top level which has declarations and ordinary forms. 1076;;; We parse declarations and then recursively process the body. 1077(defun process-toplevel-locally (body path compile-time-too &key vars funs) 1078 (declare (list path)) 1079 (multiple-value-bind (forms decls) (parse-body body nil t) 1080 (with-ir1-namespace 1081 (let* ((*lexenv* (process-decls decls vars funs)) 1082 ;; FIXME: VALUES declaration 1083 ;; 1084 ;; Binding *POLICY* is pretty much of a hack, since it 1085 ;; causes LOCALLY to "capture" enclosed proclamations. It 1086 ;; is necessary because CONVERT-AND-MAYBE-COMPILE uses the 1087 ;; value of *POLICY* as the policy. The need for this hack 1088 ;; is due to the quirk that there is no way to represent in 1089 ;; a POLICY that an optimize quality came from the default. 1090 ;; 1091 ;; FIXME: Ideally, something should be done so that DECLAIM 1092 ;; inside LOCALLY works OK. Failing that, at least we could 1093 ;; issue a warning instead of silently screwing up. 1094 ;; Here's how to fix this: a POLICY object can in fact represent 1095 ;; absence of qualitities. Whenever we rebind *POLICY* (here and 1096 ;; elsewhere), it should be bound to a policy that expresses no 1097 ;; qualities. Proclamations should update SYMBOL-GLOBAL-VALUE of 1098 ;; *POLICY*, which can be seen irrespective of dynamic bindings, 1099 ;; and declarations should update the lexical policy. 1100 ;; The POLICY macro can be amended to merge the dynamic *POLICY* 1101 ;; (or whatever it came from, like a LEXENV) with the global 1102 ;; *POLICY*. COERCE-TO-POLICY can do the merge, employing a 1-line 1103 ;; cache so that repeated calls for any two fixed policy objects 1104 ;; return the identical value (since policies are immutable). 1105 (*policy* (lexenv-policy *lexenv*)) 1106 ;; This is probably also a hack 1107 (*handled-conditions* (lexenv-handled-conditions *lexenv*)) 1108 ;; ditto 1109 (*disabled-package-locks* (lexenv-disabled-package-locks *lexenv*))) 1110 (process-toplevel-progn forms path compile-time-too))))) 1111 1112;;; Parse an EVAL-WHEN situations list, returning three flags, 1113;;; (VALUES COMPILE-TOPLEVEL LOAD-TOPLEVEL EXECUTE), indicating 1114;;; the types of situations present in the list. 1115(defun parse-eval-when-situations (situations) 1116 (when (or (not (listp situations)) 1117 (set-difference situations 1118 '(:compile-toplevel 1119 compile 1120 :load-toplevel 1121 load 1122 :execute 1123 eval))) 1124 (compiler-error "bad EVAL-WHEN situation list: ~S" situations)) 1125 (let ((deprecated-names (intersection situations '(compile load eval)))) 1126 (when deprecated-names 1127 (style-warn "using deprecated EVAL-WHEN situation names~{ ~S~}" 1128 deprecated-names))) 1129 (values (intersection '(:compile-toplevel compile) 1130 situations) 1131 (intersection '(:load-toplevel load) situations) 1132 (intersection '(:execute eval) situations))) 1133 1134 1135;;; utilities for extracting COMPONENTs of FUNCTIONALs 1136(defun functional-components (f) 1137 (declare (type functional f)) 1138 (etypecase f 1139 (clambda (list (lambda-component f))) 1140 (optional-dispatch (let ((result nil)) 1141 (flet ((maybe-frob (maybe-clambda) 1142 (when (and maybe-clambda 1143 (promise-ready-p maybe-clambda)) 1144 (pushnew (lambda-component 1145 (force maybe-clambda)) 1146 result)))) 1147 (map nil #'maybe-frob (optional-dispatch-entry-points f)) 1148 (maybe-frob (optional-dispatch-more-entry f)) 1149 (maybe-frob (optional-dispatch-main-entry f))) 1150 result)))) 1151 1152(defun make-functional-from-toplevel-lambda (lambda-expression 1153 &key 1154 name 1155 (path 1156 ;; I'd thought NIL should 1157 ;; work, but it doesn't. 1158 ;; -- WHN 2001-09-20 1159 (missing-arg))) 1160 (let* ((*current-path* path) 1161 (component (make-empty-component)) 1162 (*current-component* component) 1163 (debug-name-tail (or name (name-lambdalike lambda-expression))) 1164 (source-name (or name '.anonymous.))) 1165 (setf (component-name component) (debug-name 'initial-component debug-name-tail) 1166 (component-kind component) :initial) 1167 (let* ((fun (let ((*allow-instrumenting* t)) 1168 (funcall #'ir1-convert-lambdalike 1169 lambda-expression 1170 :source-name source-name))) 1171 ;; Convert the XEP using the policy of the real function. Otherwise 1172 ;; the wrong policy will be used for deciding whether to type-check 1173 ;; the parameters of the real function (via CONVERT-CALL / 1174 ;; PROPAGATE-TO-ARGS). -- JES, 2007-02-27 1175 (*lexenv* (make-lexenv :policy (lexenv-policy (functional-lexenv fun)))) 1176 (xep (ir1-convert-lambda (make-xep-lambda-expression fun) 1177 :source-name source-name 1178 :debug-name (debug-name 'tl-xep debug-name-tail) 1179 :system-lambda t))) 1180 (when name 1181 (assert-global-function-definition-type name fun)) 1182 (setf (functional-kind xep) :external 1183 (functional-entry-fun xep) fun 1184 (functional-entry-fun fun) xep 1185 (component-reanalyze component) t 1186 (functional-has-external-references-p xep) t) 1187 (reoptimize-component component :maybe) 1188 (locall-analyze-xep-entry-point fun) 1189 ;; Any leftover REFs to FUN outside local calls get replaced with the 1190 ;; XEP. 1191 (substitute-leaf-if (lambda (ref) 1192 (let* ((lvar (ref-lvar ref)) 1193 (dest (when lvar (lvar-dest lvar))) 1194 (kind (when (basic-combination-p dest) 1195 (basic-combination-kind dest)))) 1196 (neq :local kind))) 1197 xep 1198 fun) 1199 xep))) 1200 1201;;; Compile LAMBDA-EXPRESSION into *COMPILE-OBJECT*, returning a 1202;;; description of the result. 1203;;; * If *COMPILE-OBJECT* is a CORE-OBJECT, then write the function 1204;;; into core and return the compiled FUNCTION value. 1205;;; * If *COMPILE-OBJECT* is a fasl file, then write the function 1206;;; into the fasl file and return a dump handle. 1207;;; 1208;;; If NAME is provided, then we try to use it as the name of the 1209;;; function for debugging/diagnostic information. 1210(defun %compile (lambda-expression 1211 *compile-object* 1212 &key 1213 name 1214 (path 1215 ;; This magical idiom seems to be the appropriate 1216 ;; path for compiling standalone LAMBDAs, judging 1217 ;; from the CMU CL code and experiment, so it's a 1218 ;; nice default for things where we don't have a 1219 ;; real source path (as in e.g. inside CL:COMPILE). 1220 '(original-source-start 0 0))) 1221 (when name 1222 (legal-fun-name-or-type-error name)) 1223 (with-ir1-namespace 1224 (let* ((*lexenv* (make-lexenv 1225 :policy *policy* 1226 :handled-conditions *handled-conditions* 1227 :disabled-package-locks *disabled-package-locks*)) 1228 (*compiler-sset-counter* 0) 1229 (fun (make-functional-from-toplevel-lambda lambda-expression 1230 :name name 1231 :path path))) 1232 1233 ;; FIXME: The compile-it code from here on is sort of a 1234 ;; twisted version of the code in COMPILE-TOPLEVEL. It'd be 1235 ;; better to find a way to share the code there; or 1236 ;; alternatively, to use this code to replace the code there. 1237 ;; (The second alternative might be pretty easy if we used 1238 ;; the :LOCALL-ONLY option to IR1-FOR-LAMBDA. Then maybe the 1239 ;; whole FUNCTIONAL-KIND=:TOPLEVEL case could go away..) 1240 1241 (locall-analyze-clambdas-until-done (list fun)) 1242 1243 (let ((components-from-dfo (find-initial-dfo (list fun)))) 1244 (dolist (component-from-dfo components-from-dfo) 1245 (compile-component component-from-dfo) 1246 (replace-toplevel-xeps component-from-dfo)) 1247 1248 (let ((entry-table (etypecase *compile-object* 1249 (fasl-output (fasl-output-entry-table 1250 *compile-object*)) 1251 (core-object (core-object-entry-table 1252 *compile-object*))))) 1253 (multiple-value-bind (result found-p) 1254 (gethash (leaf-info fun) entry-table) 1255 (aver found-p) 1256 (prog1 1257 result 1258 ;; KLUDGE: This code duplicates some other code in this 1259 ;; file. In the great reorganzation, the flow of program 1260 ;; logic changed from the original CMUCL model, and that 1261 ;; path (as of sbcl-0.7.5 in SUB-COMPILE-FILE) was no 1262 ;; longer followed for CORE-OBJECTS, leading to BUG 1263 ;; 156. This place is transparently not the right one for 1264 ;; this code, but I don't have a clear enough overview of 1265 ;; the compiler to know how to rearrange it all so that 1266 ;; this operation fits in nicely, and it was blocking 1267 ;; reimplementation of (DECLAIM (INLINE FOO)) (MACROLET 1268 ;; ((..)) (DEFUN FOO ...)) 1269 ;; 1270 ;; FIXME: This KLUDGE doesn't solve all the problem in an 1271 ;; ideal way, as (1) definitions typed in at the REPL 1272 ;; without an INLINE declaration will give a NULL 1273 ;; FUNCTION-LAMBDA-EXPRESSION (allowable, but not ideal) 1274 ;; and (2) INLINE declarations will yield a 1275 ;; FUNCTION-LAMBDA-EXPRESSION headed by 1276 ;; SB-C:LAMBDA-WITH-LEXENV, even for null LEXENV. -- CSR, 1277 ;; 2002-07-02 1278 ;; 1279 ;; (2) is probably fairly easy to fix -- it is, after all, 1280 ;; a matter of list manipulation (or possibly of teaching 1281 ;; CL:FUNCTION about SB-C:LAMBDA-WITH-LEXENV). (1) is 1282 ;; significantly harder, as the association between 1283 ;; function object and source is a tricky one. 1284 ;; 1285 ;; FUNCTION-LAMBDA-EXPRESSION "works" (i.e. returns a 1286 ;; non-NULL list) when the function in question has been 1287 ;; compiled by (COMPILE <x> '(LAMBDA ...)); it does not 1288 ;; work when it has been compiled as part of the top-level 1289 ;; EVAL strategy of compiling everything inside (LAMBDA () 1290 ;; ...). -- CSR, 2002-11-02 1291 (when (core-object-p *compile-object*) 1292 (fix-core-source-info *source-info* *compile-object* result)) 1293 1294 (mapc #'clear-ir1-info components-from-dfo)))))))) 1295 1296(defun note-top-level-form (form &optional finalp) 1297 (when *compile-print* 1298 (cond ((not *top-level-form-noted*) 1299 (let ((*print-length* 2) 1300 (*print-level* 2) 1301 (*print-pretty* nil)) 1302 (with-compiler-io-syntax 1303 (compiler-mumble 1304 #-sb-xc-host "~&; ~:[compiling~;converting~] ~S" 1305 #+sb-xc-host "~&; ~:[x-compiling~;x-converting~] ~S" 1306 *block-compile* form))) 1307 form) 1308 ((and finalp 1309 (eq :top-level-forms *compile-print*) 1310 (neq form *top-level-form-noted*)) 1311 (let ((*print-length* 1) 1312 (*print-level* 1) 1313 (*print-pretty* nil)) 1314 (with-compiler-io-syntax 1315 (compiler-mumble "~&; ... top level ~S" form))) 1316 form) 1317 (t 1318 *top-level-form-noted*)))) 1319 1320;;; Handle the evaluation the a :COMPILE-TOPLEVEL body during 1321;;; compilation. Normally just evaluate in the appropriate 1322;;; environment, but also compile if outputting a CFASL. 1323(defun eval-compile-toplevel (body path) 1324 (flet ((frob () 1325 (eval-tlf `(progn ,@body) (source-path-tlf-number path) *lexenv*) 1326 (when *compile-toplevel-object* 1327 (let ((*compile-object* *compile-toplevel-object*)) 1328 (convert-and-maybe-compile `(progn ,@body) path))))) 1329 (if (null *macro-policy*) 1330 (frob) 1331 (let* ((*lexenv* 1332 (make-lexenv 1333 :policy (process-optimize-decl 1334 `(optimize ,@(policy-to-decl-spec *macro-policy*)) 1335 (lexenv-policy *lexenv*)) 1336 :default *lexenv*)) 1337 ;; In case a null lexenv is created, it needs to get the newly 1338 ;; effective global policy, not the policy currently in *POLICY*. 1339 (*policy* (lexenv-policy *lexenv*))) 1340 (frob))))) 1341 1342;;; Process a top level FORM with the specified source PATH. 1343;;; * If this is a magic top level form, then do stuff. 1344;;; * If this is a macro, then expand it. 1345;;; * Otherwise, just compile it. 1346;;; 1347;;; COMPILE-TIME-TOO is as defined in ANSI 1348;;; "3.2.3.1 Processing of Top Level Forms". 1349(defun process-toplevel-form (form path compile-time-too) 1350 (declare (list path)) 1351 1352 (catch 'process-toplevel-form-error-abort 1353 (let* ((path (or (get-source-path form) (cons form path))) 1354 (*current-path* path) 1355 (*compiler-error-bailout* 1356 (lambda (&optional condition) 1357 (convert-and-maybe-compile 1358 (make-compiler-error-form condition form) 1359 path) 1360 (throw 'process-toplevel-form-error-abort nil)))) 1361 1362 (flet ((default-processor (form) 1363 (let ((*top-level-form-noted* (note-top-level-form form))) 1364 ;; When we're cross-compiling, consider: what should we 1365 ;; do when we hit e.g. 1366 ;; (EVAL-WHEN (:COMPILE-TOPLEVEL) 1367 ;; (DEFUN FOO (X) (+ 7 X)))? 1368 ;; DEFUN has a macro definition in the cross-compiler, 1369 ;; and a different macro definition in the target 1370 ;; compiler. The only sensible thing is to use the 1371 ;; target compiler's macro definition, since the 1372 ;; cross-compiler's macro is in general into target 1373 ;; functions which can't meaningfully be executed at 1374 ;; cross-compilation time. So make sure we do the EVAL 1375 ;; here, before we macroexpand. 1376 ;; 1377 ;; Then things get even dicier with something like 1378 ;; (DEFCONSTANT-EQX SB!XC:LAMBDA-LIST-KEYWORDS ..) 1379 ;; where we have to make sure that we don't uncross 1380 ;; the SB!XC: prefix before we do EVAL, because otherwise 1381 ;; we'd be trying to redefine the cross-compilation host's 1382 ;; constants. 1383 ;; 1384 ;; (Isn't it fun to cross-compile Common Lisp?:-) 1385 #+sb-xc-host 1386 (progn 1387 (when compile-time-too 1388 (eval form)) ; letting xc host EVAL do its own macroexpansion 1389 (let* (;; (We uncross the operator name because things 1390 ;; like SB!XC:DEFCONSTANT and SB!XC:DEFTYPE 1391 ;; should be equivalent to their CL: counterparts 1392 ;; when being compiled as target code. We leave 1393 ;; the rest of the form uncrossed because macros 1394 ;; might yet expand into EVAL-WHEN stuff, and 1395 ;; things inside EVAL-WHEN can't be uncrossed 1396 ;; until after we've EVALed them in the 1397 ;; cross-compilation host.) 1398 (slightly-uncrossed (cons (uncross (first form)) 1399 (rest form))) 1400 (expanded (preprocessor-macroexpand-1 1401 slightly-uncrossed))) 1402 (if (eq expanded slightly-uncrossed) 1403 ;; (Now that we're no longer processing toplevel 1404 ;; forms, and hence no longer need to worry about 1405 ;; EVAL-WHEN, we can uncross everything.) 1406 (convert-and-maybe-compile expanded path) 1407 ;; (We have to demote COMPILE-TIME-TOO to NIL 1408 ;; here, no matter what it was before, since 1409 ;; otherwise we'd tend to EVAL subforms more than 1410 ;; once, because of WHEN COMPILE-TIME-TOO form 1411 ;; above.) 1412 (process-toplevel-form expanded path nil)))) 1413 ;; When we're not cross-compiling, we only need to 1414 ;; macroexpand once, so we can follow the 1-thru-6 1415 ;; sequence of steps in ANSI's "3.2.3.1 Processing of 1416 ;; Top Level Forms". 1417 #-sb-xc-host 1418 (let ((expanded (preprocessor-macroexpand-1 form))) 1419 (cond ((eq expanded form) 1420 (when compile-time-too 1421 (eval-compile-toplevel (list form) path)) 1422 (convert-and-maybe-compile form path nil)) 1423 (t 1424 (process-toplevel-form expanded 1425 path 1426 compile-time-too))))))) 1427 (if (atom form) 1428 #+sb-xc-host 1429 ;; (There are no xc EVAL-WHEN issues in the ATOM case until 1430 ;; (1) SBCL gets smart enough to handle global 1431 ;; DEFINE-SYMBOL-MACRO or SYMBOL-MACROLET and (2) SBCL 1432 ;; implementors start using symbol macros in a way which 1433 ;; interacts with SB-XC/CL distinction.) 1434 (convert-and-maybe-compile form path) 1435 #-sb-xc-host 1436 (default-processor form) 1437 (flet ((need-at-least-one-arg (form) 1438 (unless (cdr form) 1439 (compiler-error "~S form is too short: ~S" 1440 (car form) 1441 form)))) 1442 (case (car form) 1443 ((eval-when macrolet symbol-macrolet);things w/ 1 arg before body 1444 (need-at-least-one-arg form) 1445 (destructuring-bind (special-operator magic &rest body) form 1446 (ecase special-operator 1447 ((eval-when) 1448 ;; CT, LT, and E here are as in Figure 3-7 of ANSI 1449 ;; "3.2.3.1 Processing of Top Level Forms". 1450 (multiple-value-bind (ct lt e) 1451 (parse-eval-when-situations magic) 1452 (let ((new-compile-time-too (or ct 1453 (and compile-time-too 1454 e)))) 1455 (cond (lt (process-toplevel-progn 1456 body path new-compile-time-too)) 1457 (new-compile-time-too 1458 (eval-compile-toplevel body path)))))) 1459 ((macrolet) 1460 (funcall-in-macrolet-lexenv 1461 magic 1462 (lambda (&key funs prepend) 1463 (declare (ignore funs)) 1464 (aver (null prepend)) 1465 (process-toplevel-locally body 1466 path 1467 compile-time-too)) 1468 :compile)) 1469 ((symbol-macrolet) 1470 (funcall-in-symbol-macrolet-lexenv 1471 magic 1472 (lambda (&key vars prepend) 1473 (aver (null prepend)) 1474 (process-toplevel-locally body 1475 path 1476 compile-time-too 1477 :vars vars)) 1478 :compile))))) 1479 ((locally) 1480 (process-toplevel-locally (rest form) path compile-time-too)) 1481 ((progn) 1482 (process-toplevel-progn (rest form) path compile-time-too)) 1483 (t (default-processor form)))))))) 1484 1485 (values)) 1486 1487;;;; load time value support 1488;;;; 1489;;;; (See EMIT-MAKE-LOAD-FORM.) 1490 1491;;; Return T if we are currently producing a fasl file and hence 1492;;; constants need to be dumped carefully. 1493(declaim (inline producing-fasl-file)) 1494(defun producing-fasl-file () 1495 (fasl-output-p *compile-object*)) 1496 1497;;; Compile the FORMS and arrange for them to be called (for effect, 1498;;; not value) at load time. 1499(defun compile-make-load-form-init-forms (forms fasl) 1500 ;; If FORMS has exactly one PROGN containing a call of SB-PCL::SET-SLOTS, 1501 ;; then fopcompile it, otherwise use the main compiler. 1502 (when (singleton-p forms) 1503 (let ((call (car forms))) 1504 (when (typep call '(cons (eql sb!pcl::set-slots) (cons instance))) 1505 (pop call) 1506 (let ((instance (pop call)) 1507 (slot-names (pop call)) 1508 (value-forms call) 1509 (values)) 1510 (when (and (every #'symbolp slot-names) 1511 (every #'sb!xc:constantp value-forms)) 1512 (dolist (x value-forms) 1513 (let ((val (constant-form-value x))) 1514 ;; invoke recursive MAKE-LOAD-FORM stuff as necessary 1515 (find-constant val) 1516 (push val values))) 1517 (mapc (lambda (x) (dump-object x fasl)) (nreverse values)) 1518 (dump-object (cons (length slot-names) slot-names) fasl) 1519 (dump-object instance fasl) 1520 (dump-fop 'sb!fasl::fop-set-slot-values fasl) 1521 (return-from compile-make-load-form-init-forms)))))) 1522 (let ((lambda (compile-load-time-stuff `(progn ,@forms) nil))) 1523 (fasl-dump-toplevel-lambda-call lambda *compile-object*))) 1524 1525;;; Do the actual work of COMPILE-LOAD-TIME-VALUE or 1526;;; COMPILE-MAKE-LOAD-FORM-INIT-FORMS. 1527(defun compile-load-time-stuff (form for-value) 1528 (with-ir1-namespace 1529 (let* ((*lexenv* (make-null-lexenv)) 1530 (lambda (ir1-toplevel form *current-path* for-value nil))) 1531 (compile-toplevel (list lambda) t) 1532 lambda))) 1533 1534;;; This is called by COMPILE-TOPLEVEL when it was passed T for 1535;;; LOAD-TIME-VALUE-P (which happens in COMPILE-LOAD-TIME-STUFF). We 1536;;; don't try to combine this component with anything else and frob 1537;;; the name. If not in a :TOPLEVEL component, then don't bother 1538;;; compiling, because it was merged with a run-time component. 1539(defun compile-load-time-value-lambda (lambdas) 1540 (aver (null (cdr lambdas))) 1541 (let* ((lambda (car lambdas)) 1542 (component (lambda-component lambda))) 1543 (when (eql (component-kind component) :toplevel) 1544 (setf (component-name component) (leaf-debug-name lambda)) 1545 (compile-component component) 1546 (clear-ir1-info component)))) 1547 1548;;;; COMPILE-FILE 1549 1550(defun object-call-toplevel-lambda (tll) 1551 (declare (type functional tll)) 1552 (let ((object *compile-object*)) 1553 (etypecase object 1554 (fasl-output (fasl-dump-toplevel-lambda-call tll object)) 1555 (core-object (core-call-toplevel-lambda tll object)) 1556 (null)))) 1557 1558;;; Smash LAMBDAS into a single component, compile it, and arrange for 1559;;; the resulting function to be called. 1560(defun sub-compile-toplevel-lambdas (lambdas) 1561 (declare (list lambdas)) 1562 (when lambdas 1563 (multiple-value-bind (component tll) (merge-toplevel-lambdas lambdas) 1564 (compile-component component) 1565 (clear-ir1-info component) 1566 (object-call-toplevel-lambda tll))) 1567 (values)) 1568 1569;;; Compile top level code and call the top level lambdas. We pick off 1570;;; top level lambdas in non-top-level components here, calling 1571;;; SUB-c-t-l-l on each subsequence of normal top level lambdas. 1572(defun compile-toplevel-lambdas (lambdas) 1573 (declare (list lambdas)) 1574 (let ((len (length lambdas))) 1575 (flet ((loser (start) 1576 (or (position-if (lambda (x) 1577 (not (eq (component-kind 1578 (node-component (lambda-bind x))) 1579 :toplevel))) 1580 lambdas 1581 ;; this used to read ":start start", but 1582 ;; start can be greater than len, which 1583 ;; is an error according to ANSI - CSR, 1584 ;; 2002-04-25 1585 :start (min start len)) 1586 len))) 1587 (do* ((start 0 (1+ loser)) 1588 (loser (loser start) (loser start))) 1589 ((>= start len)) 1590 (sub-compile-toplevel-lambdas (subseq lambdas start loser)) 1591 (unless (= loser len) 1592 (object-call-toplevel-lambda (elt lambdas loser)))))) 1593 (values)) 1594 1595;;; Compile LAMBDAS (a list of CLAMBDAs for top level forms) into the 1596;;; object file. 1597;;; 1598;;; LOAD-TIME-VALUE-P seems to control whether it's MAKE-LOAD-FORM and 1599;;; COMPILE-LOAD-TIME-VALUE stuff. -- WHN 20000201 1600(defun compile-toplevel (lambdas load-time-value-p) 1601 (declare (list lambdas)) 1602 1603 (maybe-mumble "locall ") 1604 (locall-analyze-clambdas-until-done lambdas) 1605 1606 (maybe-mumble "IDFO ") 1607 (multiple-value-bind (components top-components hairy-top) 1608 (find-initial-dfo lambdas) 1609 (let ((all-components (append components top-components))) 1610 (when *check-consistency* 1611 (maybe-mumble "[check]~%") 1612 (check-ir1-consistency all-components)) 1613 1614 (dolist (component (append hairy-top top-components)) 1615 (pre-physenv-analyze-toplevel component)) 1616 1617 (dolist (component components) 1618 (compile-component component) 1619 (replace-toplevel-xeps component)) 1620 1621 (when *check-consistency* 1622 (maybe-mumble "[check]~%") 1623 (check-ir1-consistency all-components)) 1624 1625 (if load-time-value-p 1626 (compile-load-time-value-lambda lambdas) 1627 (compile-toplevel-lambdas lambdas)) 1628 1629 (mapc #'clear-ir1-info components))) 1630 (values)) 1631 1632;;; Actually compile any stuff that has been queued up for block 1633;;; compilation. 1634(defun finish-block-compilation () 1635 (when *block-compile* 1636 (when *compile-print* 1637 (compiler-mumble "~&; block compiling converted top level forms...")) 1638 (when *toplevel-lambdas* 1639 (compile-toplevel (nreverse *toplevel-lambdas*) nil) 1640 (setq *toplevel-lambdas* ())) 1641 (setq *block-compile* nil) 1642 (setq *entry-points* nil))) 1643 1644(flet ((get-handled-conditions () 1645 (let ((ctxt *compiler-error-context*)) 1646 (lexenv-handled-conditions 1647 (etypecase ctxt 1648 (node (node-lexenv ctxt)) 1649 (compiler-error-context 1650 (let ((lexenv (compiler-error-context-lexenv ctxt))) 1651 (aver lexenv) 1652 lexenv)) 1653 ;; Is this right? I would think that if lexenv is null 1654 ;; we should look at *HANDLED-CONDITIONS*. 1655 (null *lexenv*))))) 1656 (handle-p (condition ctype) 1657 #+sb-xc-host (typep condition (type-specifier ctype)) 1658 #-sb-xc-host (%%typep condition ctype))) 1659 (declare (inline handle-p)) 1660 1661 (defun handle-condition-p (condition) 1662 (dolist (muffle (get-handled-conditions) nil) 1663 (destructuring-bind (ctype . restart-name) muffle 1664 (when (and (handle-p condition ctype) 1665 (find-restart restart-name condition)) 1666 (return t))))) 1667 1668 (defun handle-condition-handler (condition) 1669 (let ((muffles (get-handled-conditions))) 1670 (aver muffles) ; FIXME: looks redundant with "fell through" 1671 (dolist (muffle muffles (bug "fell through")) 1672 (destructuring-bind (ctype . restart-name) muffle 1673 (when (handle-p condition ctype) 1674 (awhen (find-restart restart-name condition) 1675 (invoke-restart it))))))) 1676 1677 ;; WOULD-MUFFLE-P is called (incorrectly) only by NOTE-UNDEFINED-REFERENCE. 1678 ;; It is not wrong per se, but as used, it is wrong, making it nearly 1679 ;; impossible to muffle a subset of undefind warnings whose NAME and KIND 1680 ;; slots match specific things tested by a user-defined predicate. 1681 ;; Attempting to do that might muffle everything, depending on how your 1682 ;; predicate responds to a vanilla WARNING. Consider e.g. 1683 ;; (AND WARNING (NOT (SATISFIES HAIRYFN))) 1684 ;; where HAIRYFN depends on the :FORMAT-CONTROL and :FORMAT-ARGUMENTS. 1685 (defun would-muffle-p (condition) 1686 (let ((ctype (rassoc 'muffle-warning 1687 (lexenv-handled-conditions *lexenv*)))) 1688 (and ctype (handle-p condition (car ctype)))))) 1689 1690;;; Read all forms from INFO and compile them, with output to 1691;;; *COMPILE-OBJECT*. Return (VALUES ABORT-P WARNINGS-P FAILURE-P). 1692(defun sub-compile-file (info) 1693 (declare (type source-info info)) 1694 (let ((*package* (sane-package)) 1695 (*readtable* *readtable*) 1696 (sb!xc:*compile-file-pathname* nil) ; really bound in 1697 (sb!xc:*compile-file-truename* nil) ; SUB-SUB-COMPILE-FILE 1698 (*policy* *policy*) 1699 (*macro-policy* *macro-policy*) 1700 (*code-coverage-records* (make-hash-table :test 'equal)) 1701 (*code-coverage-blocks* (make-hash-table :test 'equal)) 1702 (*handled-conditions* *handled-conditions*) 1703 (*disabled-package-locks* *disabled-package-locks*) 1704 (*lexenv* (make-null-lexenv)) 1705 (*block-compile* *block-compile-arg*) 1706 (*toplevel-lambdas* ()) 1707 (*fun-names-in-this-file* ()) 1708 (*allow-instrumenting* nil) 1709 (*compiler-error-bailout* 1710 (lambda (&optional error) 1711 (declare (ignore error)) 1712 (return-from sub-compile-file (values t t t)))) 1713 (*current-path* nil) 1714 (*last-format-string* nil) 1715 (*last-format-args* nil) 1716 (*last-message-count* 0) 1717 (*compiler-sset-counter* 0) 1718 (sb!xc:*gensym-counter* 0)) 1719 (handler-case 1720 (handler-bind (((satisfies handle-condition-p) #'handle-condition-handler)) 1721 (with-compilation-values 1722 (sb!xc:with-compilation-unit () 1723 (with-world-lock () 1724 (sub-sub-compile-file info) 1725 (unless (zerop (hash-table-count *code-coverage-records*)) 1726 ;; Dump the code coverage records into the fasl. 1727 (with-source-paths 1728 (fopcompile `(record-code-coverage 1729 ',(namestring *compile-file-pathname*) 1730 ',(let (list) 1731 (maphash (lambda (k v) 1732 (declare (ignore k)) 1733 (push v list)) 1734 *code-coverage-records*) 1735 list)) 1736 nil 1737 nil))) 1738 (finish-block-compilation) 1739 (let ((object *compile-object*)) 1740 (etypecase object 1741 (fasl-output (fasl-dump-source-info info object)) 1742 (core-object (fix-core-source-info info object)) 1743 (null))) 1744 nil)))) 1745 ;; Some errors are sufficiently bewildering that we just fail 1746 ;; immediately, without trying to recover and compile more of 1747 ;; the input file. 1748 (fatal-compiler-error (condition) 1749 (signal condition) 1750 (fresh-line *error-output*) 1751 (pprint-logical-block (*error-output* nil :per-line-prefix "; ") 1752 (format *error-output* 1753 "~@<~@:_compilation aborted because of fatal error: ~2I~_~A~@:_~:>" 1754 (encapsulated-condition condition))) 1755 (finish-output *error-output*) 1756 (values t t t))))) 1757 1758;;; Return a pathname for the named file. The file must exist. 1759(defun verify-source-file (pathname-designator) 1760 (let* ((pathname (pathname pathname-designator)) 1761 (default-host (make-pathname :host (pathname-host pathname)))) 1762 (flet ((try-with-type (path type error-p) 1763 (let ((new (merge-pathnames 1764 path (make-pathname :type type 1765 :defaults default-host)))) 1766 (if (probe-file new) 1767 new 1768 (and error-p (truename new)))))) 1769 (cond ((typep pathname 'logical-pathname) 1770 (try-with-type pathname "LISP" t)) 1771 ((probe-file pathname) pathname) 1772 ((try-with-type pathname "lisp" nil)) 1773 ((try-with-type pathname "lisp" t)))))) 1774 1775(defun elapsed-time-to-string (internal-time-delta) 1776 (multiple-value-bind (tsec remainder) 1777 (truncate internal-time-delta internal-time-units-per-second) 1778 (let ((ms (truncate remainder (/ internal-time-units-per-second 1000)))) 1779 (multiple-value-bind (tmin sec) (truncate tsec 60) 1780 (multiple-value-bind (thr min) (truncate tmin 60) 1781 (format nil "~D:~2,'0D:~2,'0D.~3,'0D" thr min sec ms)))))) 1782 1783;;; Print some junk at the beginning and end of compilation. 1784(defun print-compile-start-note (source-info) 1785 (declare (type source-info source-info)) 1786 (let ((file-info (source-info-file-info source-info))) 1787 (compiler-mumble #+sb-xc-host "~&; ~A file ~S (written ~A):~%" 1788 #+sb-xc-host (if sb-cold::*compile-for-effect-only* 1789 "preloading" 1790 "cross-compiling") 1791 #-sb-xc-host "~&; compiling file ~S (written ~A):~%" 1792 (namestring (file-info-name file-info)) 1793 (sb!int:format-universal-time nil 1794 (file-info-write-date 1795 file-info) 1796 :style :government 1797 :print-weekday nil 1798 :print-timezone nil))) 1799 (values)) 1800 1801(defun print-compile-end-note (source-info won) 1802 (declare (type source-info source-info)) 1803 (compiler-mumble "~&; compilation ~:[aborted after~;finished in~] ~A~&" 1804 won 1805 (elapsed-time-to-string 1806 (- (get-internal-real-time) 1807 (source-info-start-real-time source-info)))) 1808 (values)) 1809 1810;;; Open some files and call SUB-COMPILE-FILE. If something unwinds 1811;;; out of the compile, then abort the writing of the output file, so 1812;;; that we don't overwrite it with known garbage. 1813(defun sb!xc:compile-file 1814 (input-file 1815 &key 1816 1817 ;; ANSI options 1818 (output-file (cfp-output-file-default input-file)) 1819 ;; FIXME: ANSI doesn't seem to say anything about 1820 ;; *COMPILE-VERBOSE* and *COMPILE-PRINT* being rebound by this 1821 ;; function.. 1822 ((:verbose sb!xc:*compile-verbose*) sb!xc:*compile-verbose*) 1823 ((:print sb!xc:*compile-print*) sb!xc:*compile-print*) 1824 (external-format :default) 1825 1826 ;; extensions 1827 (trace-file nil) 1828 ((:block-compile *block-compile-arg*) nil) 1829 (emit-cfasl *emit-cfasl*)) 1830 #!+sb-doc 1831 "Compile INPUT-FILE, producing a corresponding fasl file and 1832returning its filename. 1833 1834 :PRINT 1835 If true, a message per non-macroexpanded top level form is printed 1836 to *STANDARD-OUTPUT*. Top level forms that whose subforms are 1837 processed as top level forms (eg. EVAL-WHEN, MACROLET, PROGN) receive 1838 no such message, but their subforms do. 1839 1840 As an extension to ANSI, if :PRINT is :top-level-forms, a message 1841 per top level form after macroexpansion is printed to *STANDARD-OUTPUT*. 1842 For example, compiling an IN-PACKAGE form will result in a message about 1843 a top level SETQ in addition to the message about the IN-PACKAGE form' 1844 itself. 1845 1846 Both forms of reporting obey the SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*. 1847 1848 :BLOCK-COMPILE 1849 Though COMPILE-FILE accepts an additional :BLOCK-COMPILE 1850 argument, it is not currently supported. (non-standard) 1851 1852 :TRACE-FILE 1853 If given, internal data structures are dumped to the specified 1854 file, or if a value of T is given, to a file of *.trace type 1855 derived from the input file name. (non-standard) 1856 1857 :EMIT-CFASL 1858 (Experimental). If true, outputs the toplevel compile-time effects 1859 of this file into a separate .cfasl file." 1860;;; Block compilation is currently broken. 1861#| 1862 "Also, as a workaround for vaguely-non-ANSI behavior, the 1863:BLOCK-COMPILE argument is quasi-supported, to determine whether 1864multiple functions are compiled together as a unit, resolving function 1865references at compile time. NIL means that global function names are 1866never resolved at compilation time. Currently NIL is the default 1867behavior, because although section 3.2.2.3, \"Semantic Constraints\", 1868of the ANSI spec allows this behavior under all circumstances, the 1869compiler's runtime scales badly when it tries to do this for large 1870files. If/when this performance problem is fixed, the block 1871compilation default behavior will probably be made dependent on the 1872SPEED and COMPILATION-SPEED optimization values, and the 1873:BLOCK-COMPILE argument will probably become deprecated." 1874|# 1875 (let* ((fasl-output nil) 1876 (cfasl-output nil) 1877 (output-file-name nil) 1878 (coutput-file-name nil) 1879 (abort-p t) 1880 (warnings-p nil) 1881 (failure-p t) ; T in case error keeps this from being set later 1882 (input-pathname (verify-source-file input-file)) 1883 (source-info 1884 (make-file-source-info input-pathname external-format 1885 #-sb-xc-host t)) ; can't track, no SBCL streams 1886 (*compiler-trace-output* nil)) ; might be modified below 1887 1888 (unwind-protect 1889 (progn 1890 (when output-file 1891 (setq output-file-name 1892 (sb!xc:compile-file-pathname input-file 1893 :output-file output-file)) 1894 (setq fasl-output 1895 (open-fasl-output output-file-name 1896 (namestring input-pathname)))) 1897 (when emit-cfasl 1898 (setq coutput-file-name 1899 (make-pathname :type "cfasl" 1900 :defaults output-file-name)) 1901 (setq cfasl-output 1902 (open-fasl-output coutput-file-name 1903 (namestring input-pathname)))) 1904 (when trace-file 1905 (let* ((default-trace-file-pathname 1906 (make-pathname :type "trace" :defaults input-pathname)) 1907 (trace-file-pathname 1908 (if (eql trace-file t) 1909 default-trace-file-pathname 1910 (merge-pathnames trace-file 1911 default-trace-file-pathname)))) 1912 (setf *compiler-trace-output* 1913 (open trace-file-pathname 1914 :if-exists :supersede 1915 :direction :output)))) 1916 1917 (when sb!xc:*compile-verbose* 1918 (print-compile-start-note source-info)) 1919 1920 (let ((*compile-object* fasl-output) 1921 (*compile-toplevel-object* cfasl-output)) 1922 (setf (values abort-p warnings-p failure-p) 1923 (sub-compile-file source-info)))) 1924 1925 (close-source-info source-info) 1926 1927 (when fasl-output 1928 (close-fasl-output fasl-output abort-p) 1929 (setq output-file-name 1930 (pathname (fasl-output-stream fasl-output))) 1931 (when (and (not abort-p) sb!xc:*compile-verbose*) 1932 (compiler-mumble "~2&; ~A written~%" (namestring output-file-name)))) 1933 1934 (when cfasl-output 1935 (close-fasl-output cfasl-output abort-p) 1936 (when (and (not abort-p) sb!xc:*compile-verbose*) 1937 (compiler-mumble "; ~A written~%" (namestring coutput-file-name)))) 1938 1939 (when sb!xc:*compile-verbose* 1940 (print-compile-end-note source-info (not abort-p))) 1941 1942 (when *compiler-trace-output* 1943 (close *compiler-trace-output*))) 1944 1945 ;; CLHS says that the first value is NIL if the "file could not 1946 ;; be created". We interpret this to mean "a valid fasl could not 1947 ;; be created" -- which can happen if the compilation is aborted 1948 ;; before the whole file has been processed, due to eg. a reader 1949 ;; error. 1950 (values (when (and (not abort-p) output-file) 1951 ;; Hack around filesystem race condition... 1952 (or (probe-file output-file-name) output-file-name)) 1953 warnings-p 1954 failure-p))) 1955 1956;;; a helper function for COMPILE-FILE-PATHNAME: the default for 1957;;; the OUTPUT-FILE argument 1958;;; 1959;;; ANSI: The defaults for the OUTPUT-FILE are taken from the pathname 1960;;; that results from merging the INPUT-FILE with the value of 1961;;; *DEFAULT-PATHNAME-DEFAULTS*, except that the type component should 1962;;; default to the appropriate implementation-defined default type for 1963;;; compiled files. 1964(defun cfp-output-file-default (input-file) 1965 (let* ((defaults (merge-pathnames input-file *default-pathname-defaults*)) 1966 (retyped (make-pathname :type *fasl-file-type* :defaults defaults))) 1967 retyped)) 1968 1969;;; KLUDGE: Part of the ANSI spec for this seems contradictory: 1970;;; If INPUT-FILE is a logical pathname and OUTPUT-FILE is unsupplied, 1971;;; the result is a logical pathname. If INPUT-FILE is a logical 1972;;; pathname, it is translated into a physical pathname as if by 1973;;; calling TRANSLATE-LOGICAL-PATHNAME. 1974;;; So I haven't really tried to make this precisely ANSI-compatible 1975;;; at the level of e.g. whether it returns logical pathname or a 1976;;; physical pathname. Patches to make it more correct are welcome. 1977;;; -- WHN 2000-12-09 1978(defun sb!xc:compile-file-pathname (input-file 1979 &key 1980 (output-file nil output-file-p) 1981 &allow-other-keys) 1982 #!+sb-doc 1983 "Return a pathname describing what file COMPILE-FILE would write to given 1984 these arguments." 1985 (if output-file-p 1986 (merge-pathnames output-file (cfp-output-file-default input-file)) 1987 (cfp-output-file-default input-file))) 1988 1989;;;; MAKE-LOAD-FORM stuff 1990 1991;;; The entry point for MAKE-LOAD-FORM support. When IR1 conversion 1992;;; finds a constant structure, it invokes this to arrange for proper 1993;;; dumping. If it turns out that the constant has already been 1994;;; dumped, then we don't need to do anything. 1995;;; 1996;;; If the constant hasn't been dumped, then we check to see whether 1997;;; we are in the process of creating it. We detect this by 1998;;; maintaining the special *CONSTANTS-BEING-CREATED* as a list of all 1999;;; the constants we are in the process of creating. Actually, each 2000;;; entry is a list of the constant and any init forms that need to be 2001;;; processed on behalf of that constant. 2002;;; 2003;;; It's not necessarily an error for this to happen. If we are 2004;;; processing the init form for some object that showed up *after* 2005;;; the original reference to this constant, then we just need to 2006;;; defer the processing of that init form. To detect this, we 2007;;; maintain *CONSTANTS-CREATED-SINCE-LAST-INIT* as a list of the 2008;;; constants created since the last time we started processing an 2009;;; init form. If the constant passed to emit-make-load-form shows up 2010;;; in this list, then there is a circular chain through creation 2011;;; forms, which is an error. 2012;;; 2013;;; If there is some intervening init form, then we blow out of 2014;;; processing it by throwing to the tag PENDING-INIT. The value we 2015;;; throw is the entry from *CONSTANTS-BEING-CREATED*. This is so the 2016;;; offending init form can be tacked onto the init forms for the 2017;;; circular object. 2018;;; 2019;;; If the constant doesn't show up in *CONSTANTS-BEING-CREATED*, then 2020;;; we have to create it. We call %MAKE-LOAD-FORM and check 2021;;; if the result is 'FOP-STRUCT, and if so we don't do anything. 2022;;; The dumper will eventually get its hands on the object and use the 2023;;; normal structure dumping noise on it. 2024;;; 2025;;; Otherwise, we bind *CONSTANTS-BEING-CREATED* and 2026;;; *CONSTANTS-CREATED-SINCE- LAST-INIT* and compile the creation form 2027;;; much the way LOAD-TIME-VALUE does. When this finishes, we tell the 2028;;; dumper to use that result instead whenever it sees this constant. 2029;;; 2030;;; Now we try to compile the init form. We bind 2031;;; *CONSTANTS-CREATED-SINCE-LAST-INIT* to NIL and compile the init 2032;;; form (and any init forms that were added because of circularity 2033;;; detection). If this works, great. If not, we add the init forms to 2034;;; the init forms for the object that caused the problems and let it 2035;;; deal with it. 2036(defvar *constants-being-created* nil) 2037(defvar *constants-created-since-last-init* nil) 2038;;; FIXME: Shouldn't these^ variables be unbound outside LET forms? 2039(defun emit-make-load-form (constant &optional (name nil namep) 2040 &aux (fasl *compile-object*)) 2041 (aver (fasl-output-p fasl)) 2042 (unless (fasl-constant-already-dumped-p constant fasl) 2043 (let ((circular-ref (assoc constant *constants-being-created* :test #'eq))) 2044 (when circular-ref 2045 (when (find constant *constants-created-since-last-init* :test #'eq) 2046 (throw constant t)) 2047 (throw 'pending-init circular-ref))) 2048 ;; If this is a global constant reference, we can call SYMBOL-GLOBAL-VALUE 2049 ;; during LOAD as a fasl op, and not compile a lambda. 2050 (when namep 2051 (fopcompile `(symbol-global-value ',name) nil t nil) 2052 (fasl-note-handle-for-constant constant (sb!fasl::dump-pop fasl) fasl) 2053 (return-from emit-make-load-form nil)) 2054 (multiple-value-bind (creation-form init-form) (%make-load-form constant) 2055 (case creation-form 2056 (sb!fasl::fop-struct 2057 (fasl-validate-structure constant fasl) 2058 t) 2059 (:ignore-it 2060 nil) 2061 (t 2062 (let* ((name (write-to-string constant :level 1 :length 2)) 2063 (info (if init-form 2064 (list constant name init-form) 2065 (list constant)))) 2066 (let ((*constants-being-created* 2067 (cons info *constants-being-created*)) 2068 (*constants-created-since-last-init* 2069 (cons constant *constants-created-since-last-init*))) 2070 (when 2071 (catch constant 2072 (fasl-note-handle-for-constant 2073 constant 2074 (cond ((typep creation-form 2075 '(cons (eql sb!kernel::new-instance) 2076 (cons symbol null))) 2077 (dump-object (cadr creation-form) fasl) 2078 (dump-fop 'sb!fasl::fop-allocate-instance fasl) 2079 (let ((index (sb!fasl::fasl-output-table-free fasl))) 2080 (setf (sb!fasl::fasl-output-table-free fasl) (1+ index)) 2081 index)) 2082 (t 2083 (compile-load-time-value creation-form))) 2084 fasl) 2085 nil) 2086 (compiler-error "circular references in creation form for ~S" 2087 constant))) 2088 (when (cdr info) 2089 (let* ((*constants-created-since-last-init* nil) 2090 (circular-ref 2091 (catch 'pending-init 2092 (loop for (nil form) on (cdr info) by #'cddr 2093 collect form into forms 2094 finally (compile-make-load-form-init-forms forms fasl)) 2095 nil))) 2096 (when circular-ref 2097 (setf (cdr circular-ref) 2098 (append (cdr circular-ref) (cdr info))))))) 2099 nil))))) 2100 2101 2102;;;; Host compile time definitions 2103#+sb-xc-host 2104(defun compile-in-lexenv (name lambda lexenv) 2105 (declare (ignore lexenv)) 2106 (compile name lambda)) 2107 2108#+sb-xc-host 2109(defun eval-tlf (form index &optional lexenv) 2110 (declare (ignore index lexenv)) 2111 (eval form)) 2112