tests/dynamic-extent.impure.lisp

   1 ;;;; tests that dynamic-extent functionality works.
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; While most of SBCL is derived from the CMU CL system, the test
   7 ;;;; files (like this one) were written from scratch after the fork
   8 ;;;; from CMU CL.
   9 ;;;;
  10 ;;;; This software is in the public domain and is provided with
  11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  12 ;;;; more information.
  13
  14 (when (eq sb-ext:*evaluator-mode* :interpret)
  15   (sb-ext:exit :code 104))
  16
  17 (load "compiler-test-util.lisp")
  18 (use-package :ctu)
  19
  20 (setq sb-c::*check-consistency* t
  21       sb-ext:*stack-allocate-dynamic-extent* t)
  22
  23 (defun crashme (a)
  24   (declare (optimize (speed 3) (safety 0) (space 0)))
  25   (declare (muffle-conditions style-warning)) ; re F1 and F2
  26   (restart-case
  27       (progn (ignore-errors (error "Foo")) (write-char #\.))
  28     (retry () (f1 a))
  29     (use-value (new) (f2 new))))
  30
  31 ;; lp#1530390
  32 (with-test (:name :do-not-dxify-restarts)
  33   (let ((a (make-array 100))) (unwind-protect (crashme 'bork) (fill a 0)))
  34   (let ((a (make-array 100))) (unwind-protect (crashme 'bork) (fill a 0)))
  35   (let ((a (make-array 100))) (unwind-protect (crashme 'bork) (fill a 0)))
  36   (let ((a (make-array 100))) (unwind-protect (crashme 'bork) (fill a 0)))
  37   )
  38
  39 (defmacro defun-with-dx (name arglist &body body)
  40   (let ((debug-name (sb-int:symbolicate name "-HIGH-DEBUG"))
  41         (default-name (sb-int:symbolicate name "-DEFAULT")))
  42     `(progn
  43        (defun ,debug-name ,arglist
  44          (declare (optimize debug))
  45          ,@body)
  46        (defun ,default-name ,arglist
  47         ,@body)
  48        (defun ,name (&rest args)
  49          (apply #',debug-name args)
  50          (apply #',default-name args)))))
  51
  52 (declaim (notinline opaque-identity))
  53 (defun opaque-identity (x)
  54   x)
  55
  56 ;;; &REST lists
  57
  58 (defun-with-dx dxlength (&rest rest)
  59   (declare (dynamic-extent rest))
  60   (length rest))
  61
  62 (with-test (:name (:dx-&rest :basics))
  63   (assert (= (dxlength 1 2 3) 3))
  64   (assert (= (dxlength t t t t t t) 6))
  65   (assert (= (dxlength) 0)))
  66
  67 (defun callee (list)
  68   (destructuring-bind (a b c d e f &rest g) list
  69     (+ a b c d e f (length g))))
  70
  71 (defun-with-dx dxcaller (&rest rest)
  72   (declare (dynamic-extent rest))
  73   (callee rest))
  74
  75 (with-test (:name (:dx-&rest :pass-down-to-callee :tail-call))
  76   (assert (= (dxcaller 1 2 3 4 5 6 7) 22)))
  77
  78 (defun-with-dx dxcaller-align-1 (x &rest rest)
  79   (declare (dynamic-extent rest))
  80   (+ x (callee rest)))
  81
  82 (with-test (:name (:dx-&rest :pass-down-to-callee :non-tail-call))
  83   (assert (= (dxcaller-align-1 17 1 2 3 4 5 6 7) 39))
  84   (assert (= (dxcaller-align-1 17 1 2 3 4 5 6 7 8) 40)))
  85
  86 ;;; %NIP-VALUES
  87
  88 (defun-with-dx test-nip-values ()
  89   (flet ((bar (x &rest y)
  90            (declare (dynamic-extent y))
  91            (if (> x 0)
  92                (values x (length y))
  93                (values (car y)))))
  94     (multiple-value-call #'values
  95       (bar 1 2 3 4 5 6)
  96       (bar -1 'a 'b))))
  97
  98 (with-test (:name (:nip-values))
  99   (assert (equal (multiple-value-list (test-nip-values)) '(1 5 a))))
 100
 101 ;;; LET-variable substitution
 102
 103 (defun-with-dx test-let-var-subst1 (x)
 104   (let ((y (list x (1- x))))
 105     (opaque-identity :foo)
 106     (let ((z (the list y)))
 107       (declare (dynamic-extent z))
 108       (length z))))
 109
 110 (with-test (:name (:let-variable-substitution))
 111   (assert (eql (test-let-var-subst1 17) 2)))
 112
 113 (defun-with-dx test-let-var-subst2 (x)
 114   (let ((y (list x (1- x))))
 115     (declare (dynamic-extent y))
 116     (opaque-identity :foo)
 117     (let ((z (the list y)))
 118       (length z))))
 119
 120 (with-test (:name (:let-variable-substitution-2))
 121   (assert (eql (test-let-var-subst2 17) 2)))
 122
 123
 124 ;;; DX propagation through LET-return.
 125
 126 (defun-with-dx test-lvar-subst (x)
 127   (let ((y (list x (1- x))))
 128     (declare (dynamic-extent y))
 129     (second (let ((z (the list y)))
 130               (opaque-identity :foo)
 131               z))))
 132
 133 (with-test (:name (:dx-propagation-through-let-return))
 134   (assert (eql (test-lvar-subst 11) 10)))
 135
 136 ;;; this code is incorrect, but the compiler should not fail
 137 (defun-with-dx test-let-var-subst-incorrect (x)
 138   (let ((y (list x (1- x))))
 139     (opaque-identity :foo)
 140     (let ((z (the list y)))
 141       (declare (dynamic-extent z))
 142       (opaque-identity :bar)
 143       z)))
 144 \f
 145 ;;; alignment
 146
 147 (defvar *x*)
 148 (defun-with-dx test-alignment-dx-list (form)
 149   (multiple-value-prog1 (eval form)
 150     (let ((l (list 1 2 3 4)))
 151       (declare (dynamic-extent l))
 152       (setq *x* (copy-list l)))))
 153
 154 (with-test (:name (:dx-list :alignment))
 155   (dotimes (n 64)
 156     (let* ((res (loop for i below n collect i))
 157            (form `(values ,@res)))
 158       (assert (equal (multiple-value-list (test-alignment-dx-list form)) res))
 159       (assert (equal *x* '(1 2 3 4))))))
 160
 161 ;;; closure
 162
 163 (declaim (notinline true))
 164 (defun true (x)
 165   (declare (ignore x))
 166   t)
 167
 168 (defun-with-dx dxclosure (x)
 169   (flet ((f (y)
 170            (+ y x)))
 171     (declare (dynamic-extent #'f))
 172     (true #'f)))
 173
 174 (with-test (:name (:dx-closure))
 175   (assert (eq t (dxclosure 13))))
 176
 177 ;;; value-cells
 178
 179 (defun-with-dx dx-value-cell (x)
 180   ;; Not implemented everywhere, yet.
 181   #+(or x86 x86-64 mips hppa)
 182   (let ((cell x))
 183     (declare (sb-int:truly-dynamic-extent cell))
 184     (flet ((f ()
 185              (incf cell)))
 186       (declare (dynamic-extent #'f))
 187       (true #'f))))
 188
 189 ;;; CONS
 190
 191 (defun-with-dx cons-on-stack (x)
 192   (let ((cons (cons x x)))
 193     (declare (dynamic-extent cons))
 194     (true cons)
 195     nil))
 196
 197 ;;; MAKE-ARRAY
 198
 199 (defun force-make-array-on-stack (n)
 200   (declare (optimize safety))
 201   (let ((v (make-array (min n 1))))
 202     (declare (sb-int:truly-dynamic-extent v))
 203     (true v)
 204     (true v)
 205     nil))
 206
 207 (defun-with-dx make-array-on-stack-1 ()
 208   (let ((v (make-array '(42) :element-type 'single-float)))
 209     (declare (dynamic-extent v))
 210     (true v)
 211     (true v)
 212     nil))
 213
 214 (defun-with-dx make-array-on-stack-2 (n x)
 215   (declare (integer n))
 216   (let ((v (make-array n :initial-contents x)))
 217     (declare (sb-int:truly-dynamic-extent v))
 218     (true v)
 219     (true v)
 220     nil))
 221
 222 (defun-with-dx make-array-on-stack-3 (x y z)
 223   (let ((v (make-array 3
 224                        :element-type 'fixnum :initial-contents (list x y z)
 225                        :element-type t :initial-contents x)))
 226     (declare (sb-int:truly-dynamic-extent v))
 227     (true v)
 228     (true v)
 229     nil))
 230
 231 (defun-with-dx make-array-on-stack-4 ()
 232   (let ((v (make-array 3 :initial-contents '(1 2 3))))
 233     (declare (sb-int:truly-dynamic-extent v))
 234     (true v)
 235     (true v)
 236     nil))
 237
 238 (defun-with-dx make-array-on-stack-5 ()
 239   (let ((v (make-array 3 :initial-element 12 :element-type t)))
 240     (declare (sb-int:truly-dynamic-extent v))
 241     (true v)
 242     (true v)
 243     nil))
 244
 245 (defun-with-dx make-array-on-stack-6 ()
 246   (let ((v (make-array 3 :initial-element 12 :element-type '(unsigned-byte 8))))
 247     (declare (sb-int:truly-dynamic-extent v))
 248     (true v)
 249     (true v)
 250     nil))
 251
 252 (defun-with-dx make-array-on-stack-7 ()
 253   (let ((v (make-array 3 :initial-element 12 :element-type '(signed-byte 8))))
 254     (declare (sb-int:truly-dynamic-extent v))
 255     (true v)
 256     (true v)
 257     nil))
 258
 259 (defun-with-dx make-array-on-stack-8 ()
 260   (let ((v (make-array 3 :initial-element 12 :element-type 'word)))
 261     (declare (sb-int:truly-dynamic-extent v))
 262     (true v)
 263     (true v)
 264     nil))
 265
 266 (defun-with-dx make-array-on-stack-9 ()
 267   (let ((v (make-array 3 :initial-element 12.0 :element-type 'single-float)))
 268     (declare (sb-int:truly-dynamic-extent v))
 269     (true v)
 270     (true v)
 271     nil))
 272
 273 (defun-with-dx make-array-on-stack-10 ()
 274   (let ((v (make-array 3 :initial-element 12.0d0 :element-type 'double-float)))
 275     (declare (sb-int:truly-dynamic-extent v))
 276     (true v)
 277     (true v)
 278     nil))
 279
 280 (defun-with-dx make-array-on-stack-11 ()
 281   (let ((v (make-array (the integer (opaque-identity 3)) :initial-element 12.0d0 :element-type 'double-float)))
 282     (declare (sb-int:truly-dynamic-extent v))
 283     (true v)
 284     (true v)
 285     nil))
 286
 287 (defun-with-dx vector-on-stack (x y)
 288   (let ((v (vector 1 x 2 y 3)))
 289     (declare (sb-int:truly-dynamic-extent v))
 290     (true v)
 291     nil))
 292
 293 (defun-with-dx make-3d-fixed-array-on-stack-1 ()
 294   (let ((a (make-array '(4 8 3) :initial-element 12 :element-type t)))
 295     (declare (sb-int:truly-dynamic-extent a))
 296     (true a)
 297     (true a)
 298     nil))
 299 (defun-with-dx make-3d-fixed-array-on-stack-2 (a b c d)
 300   (sb-int:dx-let ((a (make-array '(2 2 1)
 301                                  :element-type 'bit
 302                                  :initial-contents `(#((,a) (,b)) (#(,c) (,d))))))
 303     (true a)
 304     (true a)
 305     nil))
 306
 307 (defun-with-dx make-2d-variable-array-on-stack ()
 308   (let* ((n (opaque-identity 5))
 309          (a (make-array `(,n 2) :initial-element 12 :element-type t)))
 310     (declare (sb-int:truly-dynamic-extent a))
 311     (true a)
 312     (true a)
 313     nil))
 314
 315 (defun 2d-array-initializer (n)
 316   (ecase n
 317     (1 '((a)))
 318     (2 '((a b) (c d)))
 319     (3 '((a b c) (c d e) (f g h)))))
 320
 321 (defun-with-dx make-2d-array-function-initializer (n)
 322   (let* ((x (opaque-identity n))
 323          (y (opaque-identity x))
 324          (a (make-array `(,x ,y) :initial-contents (2d-array-initializer x))))
 325     (declare (sb-int:truly-dynamic-extent a))
 326     (true a)
 327     (true a)
 328     nil))
 329
 330 ;;; MAKE-LIST
 331
 332 (declaim (inline make-list-container))
 333 (defstruct list-container listy-slot)
 334 (defun make-var-length-dx-list (n thunk)
 335   (sb-int:dx-let ((s (make-list-container :listy-slot (make-list n))))
 336     (funcall thunk s)))
 337 ;; :stack-allocatable-lists is necessary but not sufficient
 338 (with-test (:name (:dx-list :make-list) :skipped-on '(not :x86-64))
 339   (assert (null (ctu:find-named-callees #'make-var-length-dx-list)))
 340   (assert-no-consing (make-var-length-dx-list
 341                       50 (lambda (x) (declare (ignore x))))))
 342
 343 ;;; MAKE-STRUCTURE
 344
 345 (declaim (inline make-fp-struct-1))
 346 (defstruct fp-struct-1
 347   (s 0.0 :type single-float)
 348   (d 0.0d0 :type double-float))
 349
 350 (defun-with-dx test-fp-struct-1.1 (s d)
 351   d
 352   (let ((fp (make-fp-struct-1 :s s)))
 353     (declare (dynamic-extent fp))
 354     (assert (eql s (fp-struct-1-s fp)))
 355     (assert (eql 0.0d0 (fp-struct-1-d fp)))))
 356
 357 (defun-with-dx test-fp-struct-1.2 (s d)
 358   s
 359   (let ((fp (make-fp-struct-1 :d d)))
 360     (declare (dynamic-extent fp))
 361     (assert (eql 0.0 (fp-struct-1-s fp)))
 362     (assert (eql d (fp-struct-1-d fp)))))
 363
 364 (defun-with-dx test-fp-struct-1.3 (s d)
 365   (let ((fp (make-fp-struct-1 :d d :s s)))
 366     (declare (dynamic-extent fp))
 367     (assert (eql s (fp-struct-1-s fp)))
 368     (assert (eql d (fp-struct-1-d fp)))))
 369
 370 (defun-with-dx test-fp-struct-1.4 (s d)
 371   (let ((fp (make-fp-struct-1 :s s :d d)))
 372     (declare (dynamic-extent fp))
 373     (assert (eql s (fp-struct-1-s fp)))
 374     (assert (eql d (fp-struct-1-d fp)))))
 375
 376 (with-test (:name (:test-fp-struct-1.1))
 377   (test-fp-struct-1.1 123.456 876.243d0))
 378 (with-test (:name (:test-fp-struct-1.2))
 379   (test-fp-struct-1.2 123.456 876.243d0))
 380 (with-test (:name (:test-fp-struct-1.3))
 381   (test-fp-struct-1.3 123.456 876.243d0))
 382 (with-test (:name (:test-fp-struct-1.4))
 383   (test-fp-struct-1.4 123.456 876.243d0))
 384
 385 (declaim (inline make-fp-struct-2))
 386 (defstruct fp-struct-2
 387   (d 0.0d0 :type double-float)
 388   (s 0.0 :type single-float))
 389
 390 (defun-with-dx test-fp-struct-2.1 (s d)
 391   d
 392   (let ((fp (make-fp-struct-2 :s s)))
 393     (declare (dynamic-extent fp))
 394     (assert (eql s (fp-struct-2-s fp)))
 395     (assert (eql 0.0d0 (fp-struct-2-d fp)))))
 396
 397 (defun-with-dx test-fp-struct-2.2 (s d)
 398   s
 399   (let ((fp (make-fp-struct-2 :d d)))
 400     (declare (dynamic-extent fp))
 401     (assert (eql 0.0 (fp-struct-2-s fp)))
 402     (assert (eql d (fp-struct-2-d fp)))))
 403
 404 (defun-with-dx test-fp-struct-2.3 (s d)
 405   (let ((fp (make-fp-struct-2 :d d :s s)))
 406     (declare (dynamic-extent fp))
 407     (assert (eql s (fp-struct-2-s fp)))
 408     (assert (eql d (fp-struct-2-d fp)))))
 409
 410 (defun-with-dx test-fp-struct-2.4 (s d)
 411   (let ((fp (make-fp-struct-2 :s s :d d)))
 412     (declare (dynamic-extent fp))
 413     (assert (eql s (fp-struct-2-s fp)))
 414     (assert (eql d (fp-struct-2-d fp)))))
 415
 416 (with-test (:name (:test-fp-struct-2.1))
 417   (test-fp-struct-2.1 123.456 876.243d0))
 418 (with-test (:name (:test-fp-struct-2.2))
 419   (test-fp-struct-2.2 123.456 876.243d0))
 420 (with-test (:name (:test-fp-struct-2.3))
 421   (test-fp-struct-2.3 123.456 876.243d0))
 422 (with-test (:name (:test-fp-struct-2.4))
 423   (test-fp-struct-2.4 123.456 876.243d0))
 424
 425 (declaim (inline make-cfp-struct-1))
 426 (defstruct cfp-struct-1
 427   (s (complex 0.0) :type (complex single-float))
 428   (d (complex 0.0d0) :type (complex double-float)))
 429
 430 (defun-with-dx test-cfp-struct-1.1 (s d)
 431   d
 432   (let ((cfp (make-cfp-struct-1 :s s)))
 433     (declare (dynamic-extent cfp))
 434     (assert (eql s (cfp-struct-1-s cfp)))
 435     (assert (eql (complex 0.0d0) (cfp-struct-1-d cfp)))))
 436
 437 (defun-with-dx test-cfp-struct-1.2 (s d)
 438   s
 439   (let ((cfp (make-cfp-struct-1 :d d)))
 440     (declare (dynamic-extent cfp))
 441     (assert (eql (complex 0.0) (cfp-struct-1-s cfp)))
 442     (assert (eql d (cfp-struct-1-d cfp)))))
 443
 444 (defun-with-dx test-cfp-struct-1.3 (s d)
 445   (let ((cfp (make-cfp-struct-1 :d d :s s)))
 446     (declare (dynamic-extent cfp))
 447     (assert (eql s (cfp-struct-1-s cfp)))
 448     (assert (eql d (cfp-struct-1-d cfp)))))
 449
 450 (defun-with-dx test-cfp-struct-1.4 (s d)
 451   (let ((cfp (make-cfp-struct-1 :s s :d d)))
 452     (declare (dynamic-extent cfp))
 453     (assert (eql s (cfp-struct-1-s cfp)))
 454     (assert (eql d (cfp-struct-1-d cfp)))))
 455
 456 (with-test (:name (:test-cfp-struct-1.1))
 457   (test-cfp-struct-1.1 (complex 0.123 123.456) (complex 908132.41d0 876.243d0)))
 458 (with-test (:name (:test-cfp-struct-1.2))
 459   (test-cfp-struct-1.2 (complex 0.123 123.456) (complex 908132.41d0 876.243d0)))
 460 (with-test (:name (:test-cfp-struct-1.3))
 461   (test-cfp-struct-1.3 (complex 0.123 123.456) (complex 908132.41d0 876.243d0)))
 462 (with-test (:name (:test-cfp-struct-1.4))
 463   (test-cfp-struct-1.4 (complex 0.123 123.456) (complex 908132.41d0 876.243d0)))
 464
 465 (declaim (inline make-cfp-struct-2))
 466 (defstruct cfp-struct-2
 467   (d (complex 0.0d0) :type (complex double-float))
 468   (s (complex 0.0) :type (complex single-float)))
 469
 470 (defun-with-dx test-cfp-struct-2.1 (s d)
 471   d
 472   (let ((cfp (make-cfp-struct-2 :s s)))
 473     (declare (dynamic-extent cfp))
 474     (assert (eql s (cfp-struct-2-s cfp)))
 475     (assert (eql (complex 0.0d0) (cfp-struct-2-d cfp)))))
 476
 477 (defun-with-dx test-cfp-struct-2.2 (s d)
 478   s
 479   (let ((cfp (make-cfp-struct-2 :d d)))
 480     (declare (dynamic-extent cfp))
 481     (assert (eql (complex 0.0) (cfp-struct-2-s cfp)))
 482     (assert (eql d (cfp-struct-2-d cfp)))))
 483
 484 (defun-with-dx test-cfp-struct-2.3 (s d)
 485   (let ((cfp (make-cfp-struct-2 :d d :s s)))
 486     (declare (dynamic-extent cfp))
 487     (assert (eql s (cfp-struct-2-s cfp)))
 488     (assert (eql d (cfp-struct-2-d cfp)))))
 489
 490 (defun-with-dx test-cfp-struct-2.4 (s d)
 491   (let ((cfp (make-cfp-struct-2 :s s :d d)))
 492     (declare (dynamic-extent cfp))
 493     (assert (eql s (cfp-struct-2-s cfp)))
 494     (assert (eql d (cfp-struct-2-d cfp)))))
 495
 496 (with-test (:name (:test-cfp-struct-2.1))
 497   (test-cfp-struct-2.1 (complex 0.123 123.456) (complex 908132.41d0 876.243d0)))
 498 (with-test (:name (:test-cfp-struct-2.2))
 499   (test-cfp-struct-2.2 (complex 0.123 123.456) (complex 908132.41d0 876.243d0)))
 500 (with-test (:name (:test-cfp-struct-2.3))
 501   (test-cfp-struct-2.3 (complex 0.123 123.456) (complex 908132.41d0 876.243d0)))
 502 (with-test (:name (:test-cfp-struct-2.4))
 503   (test-cfp-struct-2.4 (complex 0.123 123.456) (complex 908132.41d0 876.243d0)))
 504
 505 ;; It works to declare a structure constructor INLINE after the DEFSTRUCT
 506 ;; was processed, as long as it was in the null lexical environment.
 507 ;; In a perfect world, we'd figure out that a variable declared DX which
 508 ;; receives the value of a structure constructor defined in the same file
 509 ;; and neither expressly INLINE nor NOTINLINE should be locally inlined.
 510 ;; But at least this shows that a declaration at the intended use point
 511 ;; is sufficient, without also a bracketing INLINE/NOTINLINE at the DEFSTRUCT.
 512
 513 ;; Verify the precondition for the assertions that claim that DXifying works
 514 ;; even though the MAKE- function was not expressly INLINE when its DEFSTRUCT
 515 ;; was compiled.
 516 (dolist (s '(make-foo1 make-foo2 make-foo3))
 517   (assert (null (sb-int:info :function :inline-expansion-designator s))))
 518
 519 (defstruct foo1 x)
 520
 521 (defun-with-dx make-foo1-on-stack (x)
 522   (declare (inline make-foo1))
 523   (let ((foo (make-foo1 :x x)))
 524     (declare (dynamic-extent foo))
 525     (assert (eql x (foo1-x foo)))))
 526
 527 (defstruct foo2
 528   (x 0.0 :type single-float)
 529   (y 0.0d0 :type double-float)
 530   a
 531   b
 532   c)
 533
 534 (defun-with-dx make-foo2-on-stack (x y)
 535   (declare (inline make-foo2))
 536   x
 537   (let ((foo (make-foo2 :y y :c 'c)))
 538     (declare (dynamic-extent foo))
 539     (assert (eql 0.0 (foo2-x foo)))
 540     (assert (eql y (foo2-y foo)))
 541     (assert (eql 'c (foo2-c foo)))
 542     (assert (eql nil (foo2-b foo)))))
 543
 544 ;;; Check that constants work out as argument for all relevant
 545 ;;; slot types.
 546 (defstruct foo3
 547   (a 0 :type t)
 548   (b 1 :type fixnum)
 549   (c 2 :type sb-vm:word)
 550   (d 3.0 :type single-float)
 551   (e 4.0d0 :type double-float))
 552
 553 (defun-with-dx make-foo3-on-stack ()
 554   (declare (inline make-foo3))
 555   (let ((foo (make-foo3)))
 556     (declare (dynamic-extent foo))
 557     (assert (eql 0 (foo3-a foo)))
 558     (assert (eql 1 (foo3-b foo)))
 559     (assert (eql 2 (foo3-c foo)))
 560     (assert (eql 3.0 (foo3-d foo)))
 561     (assert (eql 4.0d0 (foo3-e foo)))))
 562
 563 ;;; Nested DX
 564
 565 (defun-with-dx nested-dx-lists ()
 566   (let ((dx (list (list 1 2) (list 3 4))))
 567     (declare (dynamic-extent dx))
 568     (true dx)
 569     nil))
 570
 571 (defun-with-dx nested-dx-conses ()
 572   (let ((dx (cons 1 (cons 2 (cons 3 (cons (cons t t) nil))))))
 573     (declare (dynamic-extent dx))
 574     (true dx)
 575     nil))
 576
 577 (defun-with-dx nested-dx-not-used (x)
 578   (declare (list x))
 579   (let ((l (setf (car x) (list x x x))))
 580     (declare (dynamic-extent l))
 581     (true l)
 582     (true (length l))
 583     nil))
 584
 585 (defun-with-dx nested-evil-dx-used (x)
 586   (declare (list x))
 587   (let ((l (list x x x)))
 588     (declare (dynamic-extent l))
 589     (unwind-protect
 590          (progn
 591            (setf (car x) l)
 592            (true l))
 593       (setf (car x) nil))
 594     nil))
 595
 596 (defparameter *bar* nil)
 597 (declaim (inline make-nested-bad make-nested-good))
 598 (defstruct (nested (:constructor make-nested-bad (&key bar &aux (bar (setf *bar* bar))))
 599                    (:constructor make-nested-good (&key bar)))
 600   bar)
 601
 602 (defun-with-dx nested-good (y)
 603   (let ((x (list (list (make-nested-good :bar (list (list (make-nested-good :bar (list y)))))))))
 604     (declare (dynamic-extent x))
 605     (true x)))
 606
 607 (defun-with-dx nested-bad (y)
 608   (let ((x (list (list (make-nested-bad :bar (list (list (make-nested-bad :bar (list y)))))))))
 609     (declare (dynamic-extent x))
 610     (unless (equalp (caar x) (make-nested-good :bar *bar*))
 611       (error "got ~S, wanted ~S" (caar x) (make-nested-good :bar *bar*)))
 612     ;; the NESTED instance itself *should* be DX!
 613     (copy-nested (caar x))))
 614
 615 (with-test (:name :conservative-nested-dx)
 616   ;; NESTED-BAD should not stack-allocate :BAR due to the SETF.
 617   (assert (equalp (nested-bad 42) (make-nested-good :bar *bar*)))
 618   (assert (equalp *bar* (list (list (make-nested-bad :bar (list 42)))))))
 619
 620 ;;; Conditional nested DX
 621
 622 ;; These two test cases prompted a substantial redesign of the STACK
 623 ;; phase of the compiler to handle their particular permutation of
 624 ;; nested DX.
 625
 626 (with-test (:name (:bug-1044465 :reduced))
 627   ;; Test case from Stas Boukarev
 628   (compile nil '(lambda (x)
 629                  (let ((a (if x
 630                               (list (list x))
 631                               (list (list x)))))
 632                    (declare (dynamic-extent a))
 633                    (prin1 a)
 634                    1))))
 635
 636 (with-test (:name (:bug-1044465 :nasty))
 637   ;; Test case from Alastair Bridgewater
 638   (compile nil '(lambda (x y)
 639                  (dotimes (i 2)
 640                    (block bar
 641                      (let ((a (if x
 642                                  (list (list x))
 643                                  (list (list x))))
 644                            (b (if y x (return-from bar x))))
 645                       (declare (dynamic-extent a))
 646                       (prin1 a)
 647                       b))))))
 648
 649 ;;; multiple uses for dx lvar
 650
 651 (defun-with-dx multiple-dx-uses ()
 652   (let ((dx (if (true t)
 653                 (list 1 2 3)
 654                 (list 2 3 4))))
 655     (declare (dynamic-extent dx))
 656     (true dx)
 657     nil))
 658
 659 ;;; mapfoo should make the initial cons dx
 660
 661 (defun mapcar-negate (x) (mapcar #'- x))
 662 (defun mapcan-reverse (x) (mapcan #'reverse x))
 663
 664 ;;; handler-case and handler-bind should use DX internally
 665
 666 (defun dx-handler-bind (x)
 667   (handler-bind ((error
 668                   #'(lambda (c)
 669                       (break "OOPS: ~S caused ~S" x c)))
 670                  ((and serious-condition (not error))
 671                   #'(lambda (c)
 672                       (break "OOPS2: ~S did ~S" x c))))
 673     (/ 2 x)))
 674
 675 (defun dx-handler-case (x)
 676   (assert (zerop (handler-case (/ 2 x)
 677                    (error (c)
 678                      (break "OOPS: ~S caused ~S" x c)
 679                      -1)
 680                    (:no-error (res)
 681                      (1- res))))))
 682
 683 (defun list-delete-some-stuff ()
 684   ;; opaque-identity hides the fact that we are calling a destructive function
 685   ;; on a constant, which is technically illegal. But no deletion occurs,
 686   ;; so it's innocuous. Also these aren't tests of DX, but oh well...
 687   (declare (muffle-conditions style-warning))
 688   (delete 'a (opaque-identity '(x y)))
 689   (delete 'a (opaque-identity '(x y)) :from-end t)
 690   (delete-duplicates (opaque-identity '(x y))))
 691
 692 (defvar *a-cons* (cons nil nil))
 693
 694 (with-test (:name (:no-consing :dx-closures) :skipped-on '(not :stack-allocatable-closures))
 695   (assert-no-consing (dxclosure 42)))
 696
 697 (with-test (:name (:no-consing :dx-lists)
 698             :skipped-on '(not (and :stack-allocatable-lists
 699                                :stack-allocatable-fixed-objects)))
 700   (assert-no-consing (dxlength 1 2 3))
 701   (assert-no-consing (dxlength t t t t t t))
 702   (assert-no-consing (dxlength))
 703   (assert-no-consing (dxcaller 1 2 3 4 5 6 7))
 704   (assert-no-consing (test-nip-values))
 705   (assert-no-consing (test-let-var-subst2 17))
 706   (assert-no-consing (test-lvar-subst 11))
 707   (assert-no-consing (nested-dx-lists))
 708   (assert-consing (nested-dx-not-used *a-cons*))
 709   (assert-no-consing (nested-evil-dx-used *a-cons*))
 710   (assert-no-consing (mapcar-negate nil))
 711   (assert-no-consing (mapcan-reverse nil))
 712   (assert-no-consing (list-delete-some-stuff))
 713   (assert-no-consing (multiple-dx-uses)))
 714
 715 (with-test (:name (:no-consing :dx-value-cell)
 716                   :skipped-on '(not :stack-allocatable-closures))
 717   (assert-no-consing (dx-value-cell 13)))
 718
 719 (with-test (:name (:no-consing :dx-fixed-objects)
 720                   :skipped-on '(not (and :stack-allocatable-fixed-objects
 721                                          :stack-allocatable-closures)))
 722   (assert-no-consing (cons-on-stack 42))
 723   (assert-no-consing (make-foo1-on-stack 123))
 724   (assert-no-consing (nested-good 42))
 725   (assert-no-consing (nested-dx-conses))
 726   (assert-no-consing (dx-handler-bind 2))
 727   (assert-no-consing (dx-handler-case 2)))
 728
 729 (with-test (:name (:no-consing :dx-vectors) :skipped-on '(not :stack-allocatable-vectors))
 730   (assert-no-consing (force-make-array-on-stack 128))
 731   (assert-no-consing (make-array-on-stack-2 5 '(1 2.0 3 4.0 5)))
 732   (assert-no-consing (make-array-on-stack-3 9 8 7))
 733   (assert-no-consing (make-array-on-stack-4))
 734   (assert-no-consing (make-array-on-stack-5))
 735   (assert-no-consing (vector-on-stack :x :y)))
 736
 737 (with-test (:name (:no-consing :dx-arrays) :skipped-on '(not :stack-allocatable-vectors))
 738   (assert-no-consing (make-3d-fixed-array-on-stack-1))
 739   (assert-no-consing (make-2d-variable-array-on-stack))
 740   (assert-no-consing (make-2d-array-function-initializer 1))
 741   (assert-no-consing (make-2d-array-function-initializer 2))
 742   (assert-no-consing (make-2d-array-function-initializer 3)))
 743
 744 (with-test (:name (:no-consing :dx-specialized-arrays)
 745             :skipped-on '(not (and :stack-allocatable-vectors
 746                                    :c-stack-is-control-stack)))
 747   (assert-no-consing (make-3d-fixed-array-on-stack-2 0 0 1 1)))
 748
 749 (with-test (:name (:no-consing :specialized-dx-vectors)
 750             :skipped-on `(not (and :stack-allocatable-vectors
 751                                    :c-stack-is-control-stack)))
 752   (assert-no-consing (make-array-on-stack-1))
 753   (assert-no-consing (make-array-on-stack-6))
 754   (assert-no-consing (make-array-on-stack-7))
 755   (assert-no-consing (make-array-on-stack-8))
 756   (assert-no-consing (make-array-on-stack-9))
 757   (assert-no-consing (make-array-on-stack-10))
 758   (assert-no-consing (make-array-on-stack-11)))
 759
 760 (with-test (:name (:no-consing :dx-raw-instances) :skipped-on '(or (not :raw-instance-init-vops)
 761                                                                    (not (and :gencgc :c-stack-is-control-stack))))
 762   (let (a b)
 763     (setf a 1.24 b 1.23d0)
 764     (assert-no-consing (make-foo2-on-stack a b)))
 765     (assert-no-consing (make-foo3-on-stack)))
 766
 767 ;;; not really DX, but GETHASH and (SETF GETHASH) should not cons
 768
 769 (defvar *table* (make-hash-table))
 770
 771 (defun test-hash-table ()
 772   (setf (gethash 5 *table*) 13)
 773   (gethash 5 *table*))
 774
 775 (with-test (:name (:no-consing :hash-tables))
 776   (assert-no-consing (test-hash-table)))
 777
 778 ;;; Both with-pinned-objects and without-gcing should not cons
 779
 780 (defun call-without-gcing (fun)
 781   (sb-sys:without-gcing (funcall fun)))
 782
 783 (defun call-with-pinned-object (fun obj)
 784   (sb-sys:with-pinned-objects (obj)
 785     (funcall fun obj)))
 786
 787 (with-test (:name (:no-consing :without-gcing))
 788   (assert-no-consing (call-without-gcing (lambda ()))))
 789
 790 (with-test (:name (:no-consing :with-pinned-objects))
 791   (assert-no-consing (call-with-pinned-object #'identity 42)))
 792
 793 ;;; with-mutex should use DX and not cons
 794
 795 (defvar *mutex* (sb-thread::make-mutex :name "mutexlock"))
 796
 797 (defun test-mutex ()
 798   (sb-thread:with-mutex (*mutex*)
 799     (true *mutex*)))
 800
 801 (with-test (:name (:no-consing :mutex) :skipped-on '(not :sb-thread))
 802   (assert-no-consing (test-mutex)))
 803 \f
 804
 805 ;;; Bugs found by Paul F. Dietz
 806
 807 (with-test (:name (:dx-bug-misc :pfdietz))
 808   (assert
 809    (eq
 810     (funcall
 811      (compile
 812       nil
 813       '(lambda (a b)
 814         (declare (optimize (speed 2) (space 0) (safety 0)
 815                   (debug 1) (compilation-speed 3)))
 816         (let* ((v5 (cons b b)))
 817           (declare (dynamic-extent v5))
 818           v5
 819           a)))
 820      'x 'y)
 821     'x)))
 822
 823 ;;; bug reported by Svein Ove Aas
 824 (defun svein-2005-ii-07 (x y)
 825   (declare (optimize (speed 3) (space 2) (safety 0) (debug 0)))
 826   (let ((args (list* y 1 2 x)))
 827     (declare (dynamic-extent args))
 828     (apply #'aref args)))
 829
 830 (with-test (:name (:dx-bugs-misc :svein-2005-ii-07))
 831   (assert (eql
 832            (svein-2005-ii-07
 833             '(0)
 834             #3A(((1 1 1) (1 1 1) (1 1 1))
 835                 ((1 1 1) (1 1 1) (4 1 1))
 836                 ((1 1 1) (1 1 1) (1 1 1))))
 837            4)))
 838
 839 ;;; bug reported by Brian Downing: stack-allocated arrays were not
 840 ;;; filled with zeroes.
 841 (defun-with-dx bdowning-2005-iv-16 ()
 842   (let ((a (make-array 11 :initial-element 0)))
 843     (declare (dynamic-extent a))
 844     (assert (every (lambda (x) (eql x 0)) a))))
 845
 846 (with-test (:name (:dx-bug-misc :bdowning-2005-iv-16))
 847   #+(or hppa mips x86 x86-64)
 848   (assert-no-consing (bdowning-2005-iv-16))
 849   (bdowning-2005-iv-16))
 850
 851 (declaim (inline my-nconc))
 852 (defun my-nconc (&rest lists)
 853   (declare (dynamic-extent lists))
 854   (apply #'nconc lists))
 855 (defun-with-dx my-nconc-caller (a b c)
 856   (let ((l1 (list a b c))
 857         (l2 (list a b c)))
 858     (my-nconc l1 l2)))
 859 (with-test (:name :rest-stops-the-buck)
 860   (let ((list1 (my-nconc-caller 1 2 3))
 861         (list2 (my-nconc-caller 9 8 7)))
 862     (assert (equal list1 '(1 2 3 1 2 3)))
 863     (assert (equal list2 '(9 8 7 9 8 7)))))
 864
 865 (defun-with-dx let-converted-vars-dx-allocated-bug (x y z)
 866   (let* ((a (list x y z))
 867          (b (list x y z))
 868          (c (list a b)))
 869     (declare (dynamic-extent c))
 870     (values (first c) (second c))))
 871 (with-test (:name :let-converted-vars-dx-allocated-bug)
 872   (multiple-value-bind (i j) (let-converted-vars-dx-allocated-bug 1 2 3)
 873     (assert (and (equal i j)
 874                  (equal i (list 1 2 3))))))
 875
 876 ;;; workaround for bug 419 -- real issue remains, but check that the
 877 ;;; bandaid holds.
 878 (defun-with-dx bug419 (x)
 879   (multiple-value-call #'list
 880     (eval '(values 1 2 3))
 881     (let ((x x))
 882       (declare (dynamic-extent x))
 883       (flet ((mget (y)
 884                (+ x y))
 885              (mset (z)
 886                (incf x z)))
 887         (declare (dynamic-extent #'mget #'mset))
 888         ((lambda (f g) (eval `(progn ,f ,g (values 4 5 6)))) #'mget #'mset)))))
 889
 890 (with-test (:name (:dx-bug-misc :bug419))
 891   (assert (equal (bug419 42) '(1 2 3 4 5 6))))
 892
 893 ;;; Multiple DX arguments in a local function call
 894 (defun test-dx-flet-test (fun n f1 f2 f3)
 895   (let ((res (with-output-to-string (s)
 896                (assert (eql n (ignore-errors (funcall fun s)))))))
 897     (multiple-value-bind (x pos) (read-from-string res nil)
 898       (assert (equalp f1 x))
 899       (multiple-value-bind (y pos2) (read-from-string res nil nil :start pos)
 900         (assert (equalp f2 y))
 901         (assert (equalp f3 (read-from-string res nil nil :start pos2))))))
 902   #+(or hppa mips x86 x86-64)
 903   (assert-no-consing (assert (eql n (funcall fun nil))))
 904   (assert (eql n (funcall fun nil))))
 905
 906 (macrolet ((def (n f1 f2 f3)
 907              (let ((name (sb-pcl::format-symbol :cl-user "DX-FLET-TEST.~A" n)))
 908                `(progn
 909                   (defun-with-dx ,name (s)
 910                     (flet ((f (x)
 911                              (declare (dynamic-extent x))
 912                              (when s
 913                                (print x s)
 914                                (finish-output s))
 915                              nil))
 916                       (f ,f1)
 917                       (f ,f2)
 918                       (f ,f3)
 919                       ,n))
 920                   (with-test (:name (:dx-flet-test ,n))
 921                     (test-dx-flet-test #',name ,n ,f1 ,f2 ,f3))))))
 922   (def 0 (list :one) (list :two) (list :three))
 923   (def 1 (make-array 128) (list 1 2 3 4 5 6 7 8) (list 'list))
 924   (def 2 (list 1) (list 2 3) (list 4 5 6 7)))
 925
 926 ;;; Test that unknown-values coming after a DX value won't mess up the
 927 ;;; stack analysis
 928 (defun test-update-uvl-live-sets (x y z)
 929  (declare (optimize speed (safety 0)))
 930  (flet ((bar (a b)
 931           (declare (dynamic-extent a))
 932           (eval `(list (length ',a) ',b))))
 933    (list (bar x y)
 934          (bar (list x y z)                  ; dx push
 935               (list
 936                (multiple-value-call 'list
 937                  (eval '(values 1 2 3))     ; uv push
 938                  (max y z)
 939                )                            ; uv pop
 940                14)
 941          ))))
 942
 943 (with-test (:name (:update-uvl-live-sets))
 944   (assert (equal '((0 4) (3 ((1 2 3 5) 14)))
 945                  (test-update-uvl-live-sets #() 4 5))))
 946
 947 (with-test (:name :regression-1.0.23.38)
 948   (compile nil '(lambda ()
 949                  (declare (muffle-conditions compiler-note))
 950                  (flet ((make (x y)
 951                           (let ((res (cons x x)))
 952                             (setf (cdr res) y)
 953                             res)))
 954                    (declare (inline make))
 955                    (let ((z (make 1 2)))
 956                      (declare (dynamic-extent z))
 957                      (print z)
 958                      t))))
 959   (compile nil '(lambda ()
 960                  (declare (muffle-conditions compiler-note))
 961                  (flet ((make (x y)
 962                           (let ((res (cons x x)))
 963                             (setf (cdr res) y)
 964                             (if x res y))))
 965                    (declare (inline make))
 966                    (let ((z (make 1 2)))
 967                      (declare (dynamic-extent z))
 968                      (print z)
 969                      t)))))
 970
 971 ;;; On x86 and x86-64 upto 1.0.28.16 LENGTH and WORDS argument
 972 ;;; tns to ALLOCATE-VECTOR-ON-STACK could be packed in the same
 973 ;;; location, leading to all manner of badness. ...reproducing this
 974 ;;; reliably is hard, but this it at least used to break on x86-64.
 975 (defun length-and-words-packed-in-same-tn (m)
 976   (declare (optimize speed (safety 0) (debug 0) (space 0)))
 977   (let ((array (make-array (max 1 m) :element-type 'fixnum)))
 978     (declare (dynamic-extent array))
 979     (array-total-size array)))
 980 (with-test (:name :length-and-words-packed-in-same-tn)
 981   (assert (= 1 (length-and-words-packed-in-same-tn -3))))
 982
 983 (with-test (:name :handler-case-bogus-compiler-note
 984             :skipped-on '(not (and :stack-allocatable-fixed-objects
 985                                    :stack-allocatable-closures)))
 986   (handler-bind
 987       ((compiler-note (lambda (note)
 988                         (error "compiler issued note ~S during test" note))))
 989     ;; Taken from SWANK, used to signal a bogus stack allocation
 990     ;; failure note.
 991     (compile nil
 992              `(lambda (files fasl-dir load)
 993                 (declare (muffle-conditions style-warning))
 994                 (let ((needs-recompile nil))
 995                   (dolist (src files)
 996                     (let ((dest (binary-pathname src fasl-dir)))
 997                       (handler-case
 998                           (progn
 999                             (when (or needs-recompile
1000                                       (not (probe-file dest))
1001                                       (file-newer-p src dest))
1002                               (setq needs-recompile t)
1003                               (ensure-directories-exist dest)
1004                               (compile-file src :output-file dest :print nil :verbose t))
1005                             (when load
1006                               (load dest :verbose t)))
1007                         (serious-condition (c)
1008                           (handle-loadtime-error c dest))))))))))
1009
1010 (declaim (inline foovector barvector))
1011 (defun foovector (x y z)
1012   (let ((v (make-array 3)))
1013     (setf (aref v 0) x
1014           (aref v 1) y
1015           (aref v 2) z)
1016     v))
1017 (defun barvector (x y z)
1018   (make-array 3 :initial-contents (list x y z)))
1019 (with-test (:name :dx-compiler-notes
1020             :skipped-on '(not (and :stack-allocatable-vectors
1021                                    :stack-allocatable-closures)))
1022   (flet ((assert-notes (j lambda)
1023            (let ((n 0))
1024              (handler-bind ((compiler-note (lambda (c)
1025                                              (declare (ignore c))
1026                                              (incf n))))
1027                (let ((*error-output* (make-broadcast-stream)))
1028                  (compile nil lambda))
1029                (unless (= j n)
1030                  (error "Wanted ~S notes, got ~S for~%   ~S"
1031                         j n lambda))))))
1032     ;; These ones should complain.
1033     (assert-notes 1 `(lambda (x)
1034                        (let ((v (make-array x)))
1035                          (declare (dynamic-extent v))
1036                          (length v))))
1037     (assert-notes 2 `(lambda (x)
1038                        (let ((y (if (plusp x)
1039                                     (true x)
1040                                     (true (- x)))))
1041                          (declare (dynamic-extent y))
1042                          (print y)
1043                          nil)))
1044     (assert-notes 1 `(lambda (x)
1045                        (let ((y (foovector x x x)))
1046                          (declare (sb-int:truly-dynamic-extent y))
1047                          (print y)
1048                          nil)))
1049     ;; These ones should not complain.
1050     (assert-notes 0 `(lambda (name)
1051                        (with-alien
1052                            ((posix-getenv (function c-string c-string)
1053                                           :EXTERN "getenv"))
1054                          (values
1055                           (alien-funcall posix-getenv name)))))
1056     (assert-notes 0 `(lambda (x)
1057                        (let ((y (barvector x x x)))
1058                          (declare (dynamic-extent y))
1059                          (print y)
1060                          nil)))
1061     (assert-notes 0 `(lambda (list)
1062                        (declare (optimize (space 0)))
1063                        (sort list (lambda (x y) ; shut unrelated notes up
1064                                     (< (truly-the fixnum x)
1065                                        (truly-the fixnum y))))))
1066     (assert-notes 0 `(lambda (other)
1067                        #'(lambda (s c n)
1068                            (ignore-errors (funcall other s c n)))))))
1069
1070 ;;; Stack allocating a value cell in HANDLER-CASE would blow up stack
1071 ;;; in an unfortunate loop.
1072 (defun handler-case-eating-stack ()
1073   (declare (muffle-conditions warning)) ; "dead code detected ... IR1-PHASES"
1074   (let ((sp nil))
1075     (do ((n 0 (logand most-positive-fixnum (1+ n))))
1076         ((>= n 1024))
1077      (multiple-value-bind (value error) (ignore-errors)
1078        (when (and value error) nil))
1079       (if sp
1080           (assert (= sp (sb-c::%primitive sb-c:current-stack-pointer)))
1081           (setf sp (sb-c::%primitive sb-c:current-stack-pointer))))))
1082 (with-test (:name :handler-case-eating-stack
1083             :skipped-on '(not (and :stack-allocatable-fixed-objects
1084                                    :stack-allocatable-closures)))
1085   (assert-no-consing (handler-case-eating-stack)))
1086
1087 ;;; A nasty bug where RECHECK-DYNAMIC-EXTENT-LVARS thought something was going
1088 ;;; to be stack allocated when it was not, leading to a bogus %NIP-VALUES.
1089 ;;; Fixed by making RECHECK-DYNAMIC-EXTENT-LVARS deal properly with nested DX.
1090 (deftype vec ()
1091   `(simple-array t (3)))
1092 (declaim (ftype (function (t t t) vec) vec))
1093 (declaim (inline vec))
1094 (defun vec (a b c)
1095   (make-array 3 :initial-contents (list a b c)))
1096 (defun bad-boy (vec)
1097   (declare (type vec vec))
1098   (lambda (fun)
1099     (let ((vec (vec (aref vec 0) (aref vec 1) (aref vec 2))))
1100       (declare (dynamic-extent vec))
1101       (funcall fun vec))))
1102 (with-test (:name :recheck-nested-dx-bug
1103             :skipped-on '(not :stack-allocatable-vectors))
1104   (assert (funcall (bad-boy (vec 1.0 2.0 3.3))
1105                    (lambda (vec) (equalp vec (vec 1.0 2.0 3.3)))))
1106   (flet ((foo (x) (declare (ignore x))))
1107     (let ((bad-boy (bad-boy (vec 2.0 3.0 4.0))))
1108       (assert-no-consing (funcall bad-boy #'foo)))))
1109
1110 (with-test (:name :bug-497321)
1111   (flet ((test (lambda type)
1112            (let ((n 0))
1113              (handler-bind ((condition (lambda (c)
1114                                          (incf n)
1115                                          (unless (typep c type)
1116                                            (error "wanted ~S for~%  ~S~%got ~S"
1117                                                   type lambda (type-of c))))))
1118                (let ((*error-output* (make-broadcast-stream)))
1119                  (compile nil lambda)))
1120              (assert (= n 1)))))
1121     (test `(lambda () (declare (dynamic-extent #'bar)))
1122           'style-warning)
1123     (test `(lambda () (declare (dynamic-extent bar)))
1124           'style-warning)
1125     (test `(lambda (bar) (cons bar (lambda () (declare (dynamic-extent bar)))))
1126           'sb-ext:compiler-note)
1127     (test `(lambda ()
1128              (flet ((bar () t))
1129                (cons #'bar (lambda () (declare (dynamic-extent #'bar))))))
1130           'sb-ext:compiler-note)))
1131
1132 (with-test (:name :bug-586105
1133             :skipped-on '(not (and :stack-allocatable-vectors
1134                                :stack-allocatable-lists)))
1135   (flet ((test (x)
1136            (let ((vec1 (make-array 1 :initial-contents (list (list x))))
1137                  (vec2 (make-array 1 :initial-contents `((,x))))
1138                  (vec3 (make-array 1 :initial-contents `#((,x))))
1139                  (vec4 (make-array 1 :initial-contents `(#(,x)))))
1140              (declare (dynamic-extent vec1 vec2 vec3 vec4))
1141              (assert (eql x (car (aref vec1 0))))
1142              (assert (eql x (car (aref vec2 0))))
1143              (assert (eql x (car (aref vec3 0))))
1144              (assert (eql x (elt (aref vec4 0) 0))))))
1145     (assert-no-consing (test 42))))
1146 \f
1147 (defun bug-681092 ()
1148   (declare (optimize speed))
1149   (let ((c 0))
1150     (flet ((bar () c))
1151       (declare (dynamic-extent #'bar))
1152       (do () ((list) (bar))
1153         (setf c 10)
1154         (return (bar))))))
1155 (with-test (:name :bug-681092)
1156   (assert (= 10 (bug-681092))))
1157 \f
1158 ;;;; Including a loop in the flow graph between a DX-allocation and
1159 ;;;; the start of its environment would, for a while, cause executing
1160 ;;;; any of the code in the loop to discard the value.  Found via
1161 ;;;; attempting to DX-allocate an array, which triggered the FILL
1162 ;;;; transform, which inserted such a loop.
1163 (defun bug-1472785 (x)
1164   (let ((y (let ((z (cons nil nil)))
1165              (let ((i 0))
1166                (tagbody
1167                 b1
1168                   (when (= x i) (go b2))
1169                   (incf i)
1170                   (go b1)
1171                 b2))
1172              z))
1173         (w (cons t t)))
1174     (declare (dynamic-extent y w))
1175     (eq y w)))
1176 (with-test (:name :bug-1472785)
1177   (assert (null (bug-1472785 1))))
1178 \f
1179 ;;;; &REST lists should stop DX propagation -- not required by ANSI,
1180 ;;;; but required by sanity.
1181
1182 (declaim (inline rest-stops-dx))
1183 (defun-with-dx rest-stops-dx (&rest args)
1184   (declare (dynamic-extent args))
1185   (apply #'opaque-identity args))
1186
1187 (defun-with-dx rest-stops-dx-ok ()
1188   (equal '(:foo) (rest-stops-dx (list :foo))))
1189
1190 (with-test (:name :rest-stops-dynamic-extent)
1191   (assert (rest-stops-dx-ok)))
1192
1193 ;;;; These tests aren't strictly speaking DX, but rather &REST -> &MORE
1194 ;;;; conversion.
1195 (with-test (:name :rest-to-more-conversion)
1196   (let ((f1 (compile nil `(lambda (f &rest args)
1197                             (apply f args)))))
1198     (assert-no-consing (assert (eql f1 (funcall f1 #'identity f1)))))
1199   (let ((f2 (compile nil `(lambda (f1 f2 &rest args)
1200                             (values (apply f1 args) (apply f2 args))))))
1201     (assert-no-consing (multiple-value-bind (a b)
1202                            (funcall f2 (lambda (x y z) (+ x y z)) (lambda (x y z) (- x y z))
1203                                     1 2 3)
1204                          (assert (and (eql 6 a) (eql -4 b))))))
1205   (let ((f3 (compile nil `(lambda (f &optional x &rest args)
1206                             (when x
1207                               (apply f x args))))))
1208     (assert-no-consing (assert (eql 42 (funcall f3
1209                                                 (lambda (a b c) (+ a b c))
1210                                                 11
1211                                                 10
1212                                                 21)))))
1213   (let ((f4
1214           (let ((*error-output* (make-broadcast-stream)))
1215             (compile nil `(lambda (f &optional x &rest args
1216                                      &key y &allow-other-keys)
1217                             (apply f y x args))))))
1218     (assert-no-consing (funcall f4 (lambda (y x yk y2 b c)
1219                                      (assert (eq y 'y))
1220                                      (assert (= x 2))
1221                                      (assert (eq :y yk))
1222                                      (assert (eq y2 'y))
1223                                      (assert (eq b 'b))
1224                                      (assert (eq c 'c)))
1225                                 2 :y 'y 'b 'c)))
1226   (let ((f5 (compile nil `(lambda (a b c &rest args)
1227                             (apply #'list* a b c args)))))
1228     (assert (equal '(1 2 3 4 5 6 7) (funcall f5 1 2 3 4 5 6 '(7)))))
1229   (let ((f6 (compile nil `(lambda (x y)
1230                             (declare (optimize speed))
1231                             (concatenate 'string x y)))))
1232     (assert (equal "foobar" (funcall f6 "foo" "bar"))))
1233   (let ((f7 (compile nil `(lambda (&rest args)
1234                             (lambda (f)
1235                               (apply f args))))))
1236     (assert (equal '(a b c d e f) (funcall (funcall f7 'a 'b 'c 'd 'e 'f) 'list))))
1237   (let ((f8 (compile nil `(lambda (&rest args)
1238                             (flet ((foo (f)
1239                                      (apply f args)))
1240                               #'foo)))))
1241     (assert (equal '(a b c d e f) (funcall (funcall f8 'a 'b 'c 'd 'e 'f) 'list))))
1242   (let ((f9 (compile nil `(lambda (f &rest args)
1243                             (flet ((foo (g)
1244                                      (apply g args)))
1245                               (declare (dynamic-extent #'foo))
1246                               (funcall f #'foo))))))
1247     (assert (equal '(a b c d e f)
1248                    (funcall f9 (lambda (f) (funcall f 'list)) 'a 'b 'c 'd 'e 'f))))
1249   (let ((f10 (compile nil `(lambda (f &rest args)
1250                             (flet ((foo (g)
1251                                      (apply g args)))
1252                               (funcall f #'foo))))))
1253     (assert (equal '(a b c d e f)
1254                    (funcall f10 (lambda (f) (funcall f 'list)) 'a 'b 'c 'd 'e 'f))))
1255   (let ((f11 (compile nil `(lambda (x y z)
1256                              (block out
1257                                (labels ((foo (x &rest rest)
1258                                           (apply (lambda (&rest rest2)
1259                                                    (return-from out (values-list rest2)))
1260                                                  x rest)))
1261                                 (if x
1262                                     (foo x y z)
1263                                     (foo y z x))))))))
1264     (multiple-value-bind (a b c) (funcall f11 1 2 3)
1265       (assert (eql a 1))
1266       (assert (eql b 2))
1267       (assert (eql c 3)))))
1268
1269 (defun opaque-funcall (function &rest arguments)
1270   (apply function arguments))
1271
1272 (with-test (:name :implicit-value-cells)
1273   (flet ((test-it (type input output)
1274            (let ((f (compile nil `(lambda (x)
1275                                     (declare (type ,type x))
1276                                     (flet ((inc ()
1277                                              (incf x)))
1278                                       (declare (dynamic-extent #'inc))
1279                                       (list (opaque-funcall #'inc) x))))))
1280              (assert (equal (funcall f input)
1281                             (list output output))))))
1282     (let ((width sb-vm:n-word-bits))
1283       (test-it t (1- most-positive-fixnum) most-positive-fixnum)
1284       (test-it `(unsigned-byte ,(1- width)) (ash 1 (- width 2)) (1+ (ash 1 (- width 2))))
1285       (test-it `(signed-byte ,width) (ash -1 (- width 2)) (1+ (ash -1 (- width 2))))
1286       (test-it `(unsigned-byte ,width) (ash 1 (1- width)) (1+ (ash 1 (1- width))))
1287       (test-it 'single-float 3f0 4f0)
1288       (test-it 'double-float 3d0 4d0)
1289       (test-it '(complex single-float) #c(3f0 4f0) #c(4f0 4f0))
1290       (test-it '(complex double-float) #c(3d0 4d0) #c(4d0 4d0)))))
1291
1292 (with-test (:name :sap-implicit-value-cells)
1293   (let ((f (compile nil `(lambda (x)
1294                            (declare (type system-area-pointer x))
1295                            (flet ((inc ()
1296                                     (setf x (sb-sys:sap+ x 16))))
1297                              (declare (dynamic-extent #'inc))
1298                              (list (opaque-funcall #'inc) x)))))
1299         (width sb-vm:n-machine-word-bits))
1300     (assert (every (lambda (x)
1301                      (sb-sys:sap= x (sb-sys:int-sap (+ 16 (ash 1 (1- width))))))
1302                    (funcall f (sb-sys:int-sap (ash 1 (1- width))))))))
1303
1304 (with-test (:name :&more-bounds)
1305   ;; lp#1154946
1306   (assert (not (funcall (compile nil '(lambda (&rest args) (car args))))))
1307   (assert (not (funcall (compile nil '(lambda (&rest args) (nth 6 args))))))
1308   (assert (not (funcall (compile nil '(lambda (&rest args) (elt args 10))))))
1309   (assert (not (funcall (compile nil '(lambda (&rest args) (cadr args))))))
1310   (assert (not (funcall (compile nil '(lambda (&rest args) (third args)))))))
1311
1312 (with-test (:name :local-notinline-functions)
1313   (multiple-value-bind (start result end)
1314       (funcall (checked-compile
1315                 `(lambda ()
1316                    (values (sb-kernel:current-sp)
1317                            (flet ((x () (cons 1 2)))
1318                              (declare (notinline x))
1319                              (let ((x (x)))
1320                                (declare (dynamic-extent x))
1321                                (true x))
1322                              (true 10))
1323                            (sb-kernel:current-sp)))))
1324     (assert (sb-sys:sap= start end))
1325     (assert result))
1326   (multiple-value-bind (start result end)
1327       (funcall (checked-compile
1328                 `(lambda ()
1329                    (declare (optimize speed))
1330                    (values (sb-kernel:current-sp)
1331                            (flet ((x () (cons 1 2)))
1332                              (let ((x (x))
1333                                    (y (x)))
1334                                (declare (dynamic-extent x y))
1335                                (true x)
1336                                (true y))
1337                              (true 10))
1338                            (sb-kernel:current-sp)))))
1339     (assert (sb-sys:sap= start end))
1340     (assert result)))
1341
1342
1343 (with-test (:name :unused-paremeters-of-an-inlined-function)
1344   (let ((name (gensym "fun")))
1345     (proclaim `(inline ,name))
1346     (eval `(defun ,name (a b &optional c d)
1347              (declare (ignore c d))
1348              (cons a b)))
1349     (assert (equal (funcall
1350                     (funcall
1351                      (checked-compile
1352                       `(lambda ()
1353                          (let ((x (cons
1354                                    (,name 1 2)
1355                                    (,name 2 3))))
1356                            (declare (dynamic-extent x))
1357                            (true x))
1358                          #',name)))
1359                     2 3)
1360                    '(2 . 3)))))