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x862.lisp @ 11836

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Last change on this file since 11836 was 11836, checked in by gz, 12 years ago
Typecheck new bindings in nx1-env-body, if nx-declarations-typecheck is true. Remove the typechecking from nx1-typed-var-initform since no longer needed. Remove some bogus declarations found by compiling the system with typechecking declarations.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 438.4 KB

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1	;;;--Mode: LISP; Package: CCL --
2	;;;
3	;;; Copyright (C) 2005, Clozure Associates
4	;;; This file is part of OpenMCL.
5	;;;
6	;;; OpenMCL is licensed under the terms of the Lisp Lesser GNU Public
7	;;; License , known as the LLGPL and distributed with OpenMCL as the
8	;;; file "LICENSE". The LLGPL consists of a preamble and the LGPL,
9	;;; which is distributed with OpenMCL as the file "LGPL". Where these
10	;;; conflict, the preamble takes precedence.
11	;;;
12	;;; OpenMCL is referenced in the preamble as the "LIBRARY."
13	;;;
14	;;; The LLGPL is also available online at
15	;;; http://opensource.franz.com/preamble.html
16
17	(in-package "CCL")
18
19	(eval-when (:compile-toplevel :execute)
20	(require "NXENV")
21	(require "X8632ENV")
22	(require "X8664ENV"))
23
24	(eval-when (:load-toplevel :execute :compile-toplevel)
25	(require "X86-BACKEND"))
26
27	(defparameter x862-debug-mask 0)
28	(defconstant x862-debug-verbose-bit 0)
29	(defconstant x862-debug-vinsns-bit 1)
30	(defconstant x862-debug-lcells-bit 2)
31	(defparameter x862-target-lcell-size 0)
32	(defparameter x862-target-node-size 0)
33	(defparameter x862-target-dnode-size 0)
34	(defparameter x862-target-fixnum-shift 0)
35	(defparameter x862-target-node-shift 0)
36	(defparameter x862-target-bits-in-word 0)
37	(defparameter x862-target-num-arg-regs 0)
38	(defparameter x862-target-num-save-regs 0)
39	(defparameter x862-target-half-fixnum-type nil)
40
41	(defparameter x862-operator-supports-u8-target ())
42	(defparameter x862-operator-supports-push ())
43	(defparameter x862-tos-reg ())
44
45	;; probably should be elsewhere
46
47	(defmacro with-additional-imm-reg ((&rest reserved) &body body)
48	(let ((node (gensym))
49	(bit (gensym)))
50	`(target-arch-case
51	(:x8632
52	(with-node-target (,@reserved) ,node
53	(let* ((,bit (ash 1 (hard-regspec-value ,node)))
54	(backend-node-temps (logandc2 backend-node-temps ,bit))
55	(available-backend-node-temps (logandc2 available-backend-node-temps ,bit))
56	(backend-imm-temps (logior backend-imm-temps ,bit))
57	(available-backend-imm-temps (logior available-backend-imm-temps ,bit)))
58	(! mark-as-imm ,node)
59	,@body
60	(! mark-as-node ,node))))
61	(:x8664
62	(progn
63	,@body)))))
64
65
66	(defun x862-immediate-operand (x)
67	(if (eq (acode-operator x) (%nx1-operator immediate))
68	(cadr x)
69	(if (eq (acode-operator x) (%nx1-operator with-code-note))
70	(x862-immediate-operand (caddr x))
71	(compiler-bug "not an immediate: ~s" x))))
72
73	(defmacro with-x86-p2-declarations (declsform &body body)
74	`(let* ((x862-tail-allow x862-tail-allow)
75	(x862-reckless x862-reckless)
76	(x862-open-code-inline x862-open-code-inline)
77	(x862-trust-declarations x862-trust-declarations)
78	(x862-full-safety x862-full-safety))
79	(x862-decls ,declsform)
80	,@body))
81
82
83	(defmacro with-x86-local-vinsn-macros ((segvar &optional vreg-var xfer-var) &body body)
84	(declare (ignorable xfer-var))
85	(let* ((template-name-var (gensym))
86	(template-temp (gensym))
87	(args-var (gensym))
88	(labelnum-var (gensym))
89	(retvreg-var (gensym))
90	(label-var (gensym)))
91	`(macrolet ((! (,template-name-var &rest ,args-var)
92	(let* ((,template-temp (get-vinsn-template-cell ,template-name-var (backend-p2-vinsn-templates target-backend))))
93	(unless ,template-temp
94	(warn "VINSN \"~A\" not defined" ,template-name-var))
95	`(prog1
96	(%emit-vinsn ,',segvar ',,template-name-var (backend-p2-vinsn-templates target-backend) ,@,args-var)
97	(setq x862-tos-reg nil)))))
98	(macrolet ((<- (,retvreg-var)
99	`(x862-copy-register ,',segvar ,',vreg-var ,,retvreg-var))
100	(@ (,labelnum-var)
101	`(backend-gen-label ,',segvar ,,labelnum-var))
102	(@= (,labelnum-var)
103	`(x862-emit-aligned-label ,',segvar ,,labelnum-var))
104	(-> (,label-var)
105	`(! jump (aref backend-labels ,,label-var)))
106	(^ (&rest branch-args)
107	`(x862-branch ,',segvar ,',xfer-var ,@branch-args))
108	(? (&key (class :gpr)
109	(mode :lisp))
110	(let* ((class-val
111	(ecase class
112	(:gpr hard-reg-class-gpr)
113	(:fpr hard-reg-class-fpr)
114	(:crf hard-reg-class-crf)))
115	(mode-val-or-form
116	(if (eq class :gpr)
117	(if (member mode '(:natural :signed-natural))
118	`(gpr-mode-name-value ,mode)
119	(gpr-mode-name-value mode))
120	(if (eq class :fpr)
121	(if (eq mode :single-float)
122	hard-reg-class-fpr-mode-single
123	hard-reg-class-fpr-mode-double)
124	0))))
125	`(make-unwired-lreg nil
126	:class ,class-val
127	:mode ,mode-val-or-form)))
128	($ (reg &key (class :gpr) (mode :lisp))
129	(let* ((class-val
130	(ecase class
131	(:gpr hard-reg-class-gpr)
132	(:fpr hard-reg-class-fpr)
133	(:crf hard-reg-class-crf)))
134	(mode-val-or-form
135	(if (eq class :gpr)
136	(if (member mode '(:natural :signed-natural))
137	`(gpr-mode-name-value ,mode)
138	(gpr-mode-name-value mode))
139	(if (eq class :fpr)
140	(if (eq mode :single-float)
141	hard-reg-class-fpr-mode-single
142	hard-reg-class-fpr-mode-double)
143	0))))
144	`(make-wired-lreg ,reg
145	:class ,class-val
146	:mode ,mode-val-or-form))))
147	,@body))))
148
149
150
151	(defvar x86-current-context-annotation nil)
152	(defvar x862-woi nil)
153	(defvar x862-open-code-inline nil)
154	(defvar x862-register-restore-count 0)
155	(defvar x862-register-restore-ea nil)
156	(defvar x862-compiler-register-save-label nil)
157	(defvar x862-valid-register-annotations 0)
158	(defvar x862-register-annotation-types nil)
159	(defvar x862-register-ea-annotations nil)
160	(defvar x862-constant-alist nil)
161	(defvar x862-double-float-constant-alist nil)
162	(defvar x862-single-float-constant-alist nil)
163
164	(defparameter x862-tail-call-aliases
165	()
166	#\| '((%call-next-method . (%tail-call-next-method . 1))) \|#
167
168	)
169
170	(defvar x862-popreg-labels nil)
171	(defvar x862-popj-labels nil)
172	(defvar x862-valret-labels nil)
173	(defvar x862-nilret-labels nil)
174
175	(defvar x862-icode nil)
176	(defvar x862-undo-stack nil)
177	(defvar x862-undo-because nil)
178
179
180	(defvar x862-cur-afunc nil)
181	(defvar x862-vstack 0)
182	(defvar x862-cstack 0)
183	(defvar x862-undo-count 0)
184	(defvar x862-returning-values nil)
185	(defvar x862-vcells nil)
186	(defvar x862-fcells nil)
187	(defvar x862-entry-vsp-saved-p nil)
188
189	(defvar x862-entry-label nil)
190	(defvar x862-tail-label nil)
191	(defvar x862-tail-vsp nil)
192	(defvar x862-tail-nargs nil)
193	(defvar x862-tail-allow t)
194	(defvar x862-reckless nil)
195	(defvar x862-full-safety nil)
196	(defvar x862-trust-declarations nil)
197	(defvar x862-entry-vstack nil)
198	(defvar x862-fixed-nargs nil)
199	(defvar x862-need-nargs t)
200
201	(defparameter x862-inhibit-register-allocation nil)
202	(defvar x862-record-symbols nil)
203	(defvar x862-recorded-symbols nil)
204	(defvar x862-emitted-source-notes '()
205	"List of all the :source-location-begin notes we've emitted during this compile.")
206
207	(defvar x862-result-reg x8664::arg_z)
208
209	(defvar x862-arg-z nil)
210	(defvar x862-arg-y nil)
211	(defvar x862-imm0 nil)
212	(defvar x862-temp0 nil)
213	(defvar x862-temp1 nil)
214	(defvar x862-fn nil)
215	(defvar x862-fname nil)
216	(defvar x862-ra0 nil)
217
218	(defvar x862-allocptr nil)
219
220	(defvar x862-fp0 nil)
221	(defvar x862-fp1 nil)
222
223	(declaim (fixnum x862-vstack x862-cstack))
224
225
226
227
228
229	(defvar x862-all-lcells ())
230
231	(defun x86-immediate-label (imm)
232	(or (cdr (assoc imm x862-constant-alist :test #'eq))
233	(let* ((lab (aref backend-labels (backend-get-next-label))))
234	(push (cons imm lab) x862-constant-alist)
235	lab)))
236
237	(defun x86-double-float-constant-label (imm)
238	(or (cdr (assoc imm x862-double-float-constant-alist))
239	(let* ((lab (aref backend-labels (backend-get-next-label))))
240	(push (cons imm lab) x862-double-float-constant-alist)
241	lab)))
242
243	(defun x86-single-float-constant-label (imm)
244	(or (cdr (assoc imm x862-single-float-constant-alist))
245	(let* ((lab (aref backend-labels (backend-get-next-label))))
246	(push (cons imm lab) x862-single-float-constant-alist)
247	lab)))
248
249
250	(defun x862-free-lcells ()
251	(without-interrupts
252	(let* ((prev (pool.data lcell-freelist)))
253	(dolist (r x862-all-lcells)
254	(setf (lcell-kind r) prev
255	prev r))
256	(setf (pool.data lcell-freelist) prev)
257	(setq x862-all-lcells nil))))
258
259	(defun x862-note-lcell (c)
260	(push c x862-all-lcells)
261	c)
262
263	(defvar x862-top-vstack-lcell ())
264	(defvar x862-bottom-vstack-lcell ())
265
266	(defun x862-new-lcell (kind parent width attributes info)
267	(x862-note-lcell (make-lcell kind parent width attributes info)))
268
269	(defun x862-new-vstack-lcell (kind width attributes info)
270	(setq x862-top-vstack-lcell (x862-new-lcell kind x862-top-vstack-lcell width attributes info)))
271
272	(defun x862-reserve-vstack-lcells (n)
273	(dotimes (i n) (x862-new-vstack-lcell :reserved x862-target-lcell-size 0 nil)))
274
275	(defun x862-vstack-mark-top ()
276	(x862-new-lcell :tos x862-top-vstack-lcell 0 0 nil))
277
278	;;; Alist mapping VARs to lcells/lregs
279	(defvar x862-var-cells ())
280
281	(defun x862-note-var-cell (var cell)
282	;(format t "~& ~s -> ~s" (var-name var) cell)
283	(push (cons var cell) x862-var-cells))
284
285	(defun x862-note-top-cell (var)
286	(x862-note-var-cell var x862-top-vstack-lcell))
287
288	(defun x862-lookup-var-cell (var)
289	(or (cdr (assq var x862-var-cells))
290	(and nil (warn "Cell not found for ~s" (var-name var)))))
291
292	(defun x862-collect-lcells (kind &optional (bottom x862-bottom-vstack-lcell) (top x862-top-vstack-lcell))
293	(do* ((res ())
294	(cell top (lcell-parent cell)))
295	((eq cell bottom) res)
296	(if (null cell)
297	(compiler-bug "Horrible compiler bug.")
298	(if (eq (lcell-kind cell) kind)
299	(push cell res)))))
300
301
302
303	;;; ensure that lcell's offset matches what we expect it to.
304	;;; For bootstrapping.
305
306	(defun x862-ensure-lcell-offset (c expected)
307	(if c (= (calc-lcell-offset c) expected) (zerop expected)))
308
309	(defun x862-check-lcell-depth (&optional (context "wherever"))
310	(when (logbitp x862-debug-verbose-bit x862-debug-mask)
311	(let* ((depth (calc-lcell-depth x862-top-vstack-lcell)))
312	(or (= depth x862-vstack)
313	(warn "~a: lcell depth = ~d, vstack = ~d" context depth x862-vstack)))))
314
315	(defun x862-do-lexical-reference (seg vreg ea)
316	(when vreg
317	(with-x86-local-vinsn-macros (seg vreg)
318	(if (eq vreg :push)
319	(if (memory-spec-p ea)
320	(if (addrspec-vcell-p ea)
321	(with-node-target () target
322	(x862-stack-to-register seg ea target)
323	(! vcell-ref target target)
324	(! vpush-register target))
325	(! vframe-push (memspec-frame-address-offset ea) x862-vstack))
326	(! vpush-register ea))
327	(if (memory-spec-p ea)
328	(ensuring-node-target (target vreg)
329	(progn
330	(x862-stack-to-register seg ea target)
331	(if (addrspec-vcell-p ea)
332	(! vcell-ref target target))))
333	(<- ea))))))
334
335	(defun x862-do-lexical-setq (seg vreg ea valreg)
336	(with-x86-local-vinsn-macros (seg vreg)
337	(cond ((typep ea 'lreg)
338	(x862-copy-register seg ea valreg))
339	((addrspec-vcell-p ea) ; closed-over vcell
340	(x862-copy-register seg x862-arg-z valreg)
341	(let* ((gvector (target-arch-case (:x8632 x8632::temp0)
342	(:x8664 x8664::arg_x))))
343	(x862-stack-to-register seg ea gvector)
344	(x862-lri seg x862-arg-y 0)
345	(! call-subprim-3 x862-arg-z (subprim-name->offset '.SPgvset) gvector x862-arg-y x862-arg-z)))
346	((memory-spec-p ea) ; vstack slot
347	(x862-register-to-stack seg valreg ea))
348	(t
349	(x862-copy-register seg ea valreg)))
350	(when vreg
351	(<- valreg))))
352
353	;;; ensure that next-method-var is heap-consed (if it's closed over.)
354	;;; it isn't ever setqed, is it ?
355	(defun x862-heap-cons-next-method-var (seg var)
356	(with-x86-local-vinsn-macros (seg)
357	(when (eq (ash 1 $vbitclosed)
358	(logand (logior (ash 1 $vbitclosed)
359	(ash 1 $vbitcloseddownward))
360	(the fixnum (nx-var-bits var))))
361	(let* ((ea (var-ea var))
362	(arg ($ x862-arg-z))
363	(result ($ x862-arg-z)))
364	(x862-do-lexical-reference seg arg ea)
365	(x862-set-nargs seg 1)
366	(! ref-constant ($ x862-fname) (x86-immediate-label (x862-symbol-entry-locative '%cons-magic-next-method-arg)))
367	(! call-known-symbol arg)
368	(x862-do-lexical-setq seg nil ea result)))))
369
370	;;; If we change the order of operands in a binary comparison operation,
371	;;; what should the operation change to ? (eg., (< X Y) means the same
372	;;; thing as (> Y X)).
373	(defparameter x862-reversed-cr-bits
374	(vector
375	nil ;o ?
376	nil ;no ?
377	x86::x86-a-bits ;b -> a
378	x86::x86-be-bits ;ae -> be
379	x86::x86-e-bits ;e->e
380	x86::x86-ne-bits ;ne->ne
381	x86::x86-ae-bits ;be->ae
382	x86::x86-b-bits ;a->b
383	nil ;s ?
384	nil ;ns ?
385	nil ;pe ?
386	nil ;po ?
387	x86::x86-g-bits ;l->g
388	x86::x86-le-bits ;ge->le
389	x86::x86-ge-bits ;le->ge
390	x86::x86-l-bits ;g->l
391	))
392
393	(defun x862-reverse-cr-bit (cr-bit)
394	(or (svref x862-reversed-cr-bits cr-bit)
395	(compiler-bug "Can't reverse CR bit ~d" cr-bit)))
396
397
398	(defun acode-condition-to-x86-cr-bit (cond)
399	(condition-to-x86-cr-bit (cadr cond)))
400
401	(defun condition-to-x86-cr-bit (cond)
402	(case cond
403	(:EQ (values x86::x86-e-bits t))
404	(:NE (values x86::x86-e-bits nil))
405	(:GT (values x86::x86-le-bits nil))
406	(:LE (values x86::x86-le-bits t))
407	(:LT (values x86::x86-l-bits t))
408	(:GE (values x86::x86-l-bits nil))))
409
410	;;; Generate the start and end bits for a RLWINM instruction that
411	;;; would be equivalent to to LOGANDing the constant with some value.
412	;;; Return (VALUES NIL NIL) if the constant contains more than one
413	;;; sequence of consecutive 1-bits, else bit indices.
414	;;; The caller generally wants to treat the constant as an (UNSIGNED-BYTE 32);
415	;;; since this uses LOGCOUNT and INTEGER-LENGTH to find the significant
416	;;; bits, it ensures that the constant is a (SIGNED-BYTE 32) that has
417	;;; the same least-significant 32 bits.
418	(defun x862-mask-bits (constant)
419	(if (< constant 0) (setq constant (logand #xffffffff constant)))
420	(if (= constant #xffffffff)
421	(values 0 31)
422	(if (zerop constant)
423	(values nil nil)
424	(let* ((signed (if (and (logbitp 31 constant)
425	(> constant 0))
426	(- constant (ash 1 32))
427	constant))
428	(count (logcount signed))
429	(len (integer-length signed))
430	(highbit (logbitp (the fixnum (1- len)) constant)))
431	(declare (fixnum count len))
432	(do* ((i 1 (1+ i))
433	(pos (- len 2) (1- pos)))
434	((= i count)
435	(let* ((start (- 32 len))
436	(end (+ count start)))
437	(declare (fixnum start end))
438	(if highbit
439	(values start (the fixnum (1- end)))
440	(values (logand 31 end)
441	(the fixnum (1- start))))))
442	(declare (fixnum i pos))
443	(unless (eq (logbitp pos constant) highbit)
444	(return (values nil nil))))))))
445
446
447	(defun x862-ensure-binding-indices-for-vcells (vcells)
448	(dolist (cell vcells)
449	(ensure-binding-index (car cell)))
450	vcells)
451
452	(defun x862-register-mask-byte (count)
453	(if (> count 0)
454	(logior
455	(ash 1 (- x8664::save0 8))
456	(if (> count 1)
457	(logior
458	(ash 1 (- x8664::save1 8))
459	(if (> count 2)
460	(logior
461	(ash 1 (- x8664::save2 8))
462	(if (> count 3)
463	(ash 1 (- x8664::save3 8))
464	0))
465	0))
466	0))
467	0))
468
469	(defun x862-encode-register-save-ea (ea count)
470	(if (zerop count)
471	0
472	(min (- (ash ea (- x862-target-node-shift)) count) #xff)))
473
474
475	(defun x862-compile (afunc &optional lambda-form x862-record-symbols)
476	(progn
477	(dolist (a (afunc-inner-functions afunc))
478	(unless (afunc-lfun a)
479	(x862-compile a
480	(if lambda-form (afunc-lambdaform a))
481	x862-record-symbols))) ; always compile inner guys
482	(let* ((x862-cur-afunc afunc)
483	(x862-returning-values nil)
484	(x86-current-context-annotation nil)
485	(x862-woi nil)
486	(next-lcell-id -1)
487	(x862-open-code-inline nil)
488	(x862-register-restore-count nil)
489	(x862-compiler-register-save-label nil)
490	(x862-valid-register-annotations 0)
491	(x862-register-ea-annotations (x862-make-stack 16))
492	(x862-register-restore-ea nil)
493	(x862-constant-alist nil)
494	(x862-double-float-constant-alist nil)
495	(x862-single-float-constant-alist nil)
496	(x862-vstack 0)
497	(x862-cstack 0)
498	(x86-lap-entry-offset (target-arch-case
499	(:x8632 x8632::fulltag-misc)
500	(:x8664 x8664::fulltag-function)))
501	(x862-result-reg (target-arch-case
502	(:x8632 x8632::arg_z)
503	(:x8664 x8664::arg_z)))
504	(x862-imm0 (target-arch-case (:x8632 x8632::imm0)
505	(:x8664 x8664::imm0)))
506	(x862-arg-z (target-arch-case (:x8632 x8632::arg_z)
507	(:x8664 x8664::arg_z)))
508	(x862-arg-y (target-arch-case (:x8632 x8632::arg_y)
509	(:x8664 x8664::arg_y)))
510	(x862-temp0 (target-arch-case (:x8632 x8632::temp0)
511	(:x8664 x8664::temp0)))
512	(x862-temp1 (target-arch-case (:x8632 x8632::temp1)
513	(:x8664 x8664::temp1)))
514	(x862-fn (target-arch-case (:x8632 x8632::fn)
515	(:x8664 x8664::fn)))
516	(x862-fname (target-arch-case (:x8632 x8632::fname)
517	(:x8664 x8664::fname)))
518	(x862-ra0 (target-arch-case (:x8632 x8632::ra0)
519	(:x8664 x8664::ra0)))
520	(x862-allocptr (target-arch-case (:x8632 x8632::allocptr)
521	(:x8664 x8664::allocptr)))
522	(x862-fp0 (target-arch-case (:x8632 x8632::fp0)
523	(:x8664 x8664::fp0)))
524	(x862-fp1 (target-arch-case (:x8632 x8632::fp1)
525	(:x8664 x8664::fp1)))
526	(x862-target-num-arg-regs (target-arch-case
527	(:x8632 $numx8632argregs)
528	(:x8664 $numx8664argregs)))
529	(x862-target-num-save-regs (target-arch-case
530	(:x8632 $numx8632saveregs)
531	(:x8664 $numx8664saveregs)))
532	(x862-target-lcell-size (arch::target-lisp-node-size (backend-target-arch target-backend)))
533	(x862-target-fixnum-shift (arch::target-fixnum-shift (backend-target-arch target-backend)))
534	(x862-target-node-shift (arch::target-word-shift (backend-target-arch target-backend)))
535	(x862-target-bits-in-word (arch::target-nbits-in-word (backend-target-arch target-backend)))
536	(x862-target-node-size x862-target-lcell-size)
537	(x862-target-half-fixnum-type `(signed-byte ,(- x862-target-bits-in-word
538	(1+ x862-target-fixnum-shift))))
539	(x862-target-dnode-size (* 2 x862-target-lcell-size))
540	(x862-tos-reg nil)
541	(x862-all-lcells ())
542	(x862-top-vstack-lcell nil)
543	(x862-bottom-vstack-lcell (x862-new-vstack-lcell :bottom 0 0 nil))
544	(x862-var-cells nil)
545	(backend-vinsns (backend-p2-vinsn-templates target-backend))
546	(backend-node-regs (target-arch-case
547	(:x8632 x8632-node-regs)
548	(:x8664 x8664-node-regs)))
549	(backend-node-temps (target-arch-case
550	(:x8632 x8632-temp-node-regs)
551	(:x8664 x8664-temp-node-regs)))
552	(available-backend-node-temps (target-arch-case
553	(:x8632 x8632-temp-node-regs)
554	(:x8664 x8664-temp-node-regs)))
555	(backend-imm-temps (target-arch-case
556	(:x8632 x8632-imm-regs)
557	(:x8664 x8664-imm-regs)))
558	(available-backend-imm-temps (target-arch-case
559	(:x8632 x8632-imm-regs)
560	(:x8664 x8664-imm-regs)))
561	(backend-crf-temps (target-arch-case
562	(:x8632 x8632-cr-fields)
563	(:x8664 x8664-cr-fields)))
564	(available-backend-crf-temps (target-arch-case
565	(:x8632 x8632-cr-fields)
566	(:x8664 x8664-cr-fields)))
567	(backend-fp-temps (target-arch-case
568	(:x8632 x8632-temp-fp-regs)
569	(:x8664 x8664-temp-fp-regs)))
570	(available-backend-fp-temps (target-arch-case
571	(:x8632 x8632-temp-fp-regs)
572	(:x8664 x8664-temp-fp-regs)))
573	(bits 0)
574	(logical-register-counter -1)
575	(backend-all-lregs ())
576	(x862-popj-labels nil)
577	(x862-popreg-labels nil)
578	(x862-valret-labels nil)
579	(x862-nilret-labels nil)
580	(x862-undo-count 0)
581	(backend-labels (x862-make-stack 64 target::subtag-simple-vector))
582	(x862-undo-stack (x862-make-stack 64 target::subtag-simple-vector))
583	(x862-undo-because (x862-make-stack 64))
584	(x862-entry-label nil)
585	(x862-tail-label nil)
586	(x862-tail-vsp nil)
587	(x862-tail-nargs nil)
588	(x862-inhibit-register-allocation nil)
589	(x862-tail-allow t)
590	(x862-reckless nil)
591	(x862-full-safety nil)
592	(x862-trust-declarations t)
593	(x862-entry-vstack nil)
594	(x862-fixed-nargs nil)
595	(x862-need-nargs t)
596	(fname (afunc-name afunc))
597	(x862-entry-vsp-saved-p nil)
598	(x862-vcells (x862-ensure-binding-indices-for-vcells (afunc-vcells afunc)))
599	(x862-fcells (afunc-fcells afunc))
600	x862-recorded-symbols
601	(x862-emitted-source-notes '()))
602	(set-fill-pointer
603	backend-labels
604	(set-fill-pointer
605	x862-undo-stack
606	(set-fill-pointer
607	x862-undo-because
608	0)))
609	(backend-get-next-label) ; start @ label 1, 0 is confused with NIL in compound cd
610	(with-dll-node-freelist (vinsns vinsn-freelist)
611	(unwind-protect
612	(progn
613	(setq bits (x862-form vinsns (make-wired-lreg x862-result-reg) $backend-return (afunc-acode afunc)))
614	(do* ((constants x862-constant-alist (cdr constants)))
615	((null constants))
616	(let* ((imm (caar constants)))
617	(when (x862-symbol-locative-p imm)
618	(setf (caar constants) (car imm)))))
619	(optimize-vinsns vinsns)
620	(when (logbitp x862-debug-vinsns-bit x862-debug-mask)
621	(format t "~% vinsns for ~s (after generation)" (afunc-name afunc))
622	(do-dll-nodes (v vinsns) (format t "~&~s" v))
623	(format t "~%~%"))
624
625	(with-dll-node-freelist ((frag-list make-frag-list) frag-freelist)
626	(with-dll-node-freelist ((uuo-frag-list make-frag-list) frag-freelist)
627	(let* ((x86-lap-labels nil)
628	(instruction (x86::make-x86-instruction))
629	(end-code-tag (gensym))
630	(start-tag (gensym))
631	(srt-tag (gensym))
632	debug-info)
633	(make-x86-lap-label end-code-tag)
634	(target-arch-case
635	(:x8664
636	(x86-lap-directive frag-list :long `(ash (+ (- (:^ ,end-code-tag ) 8)
637	x86-lap-entry-offset) -3))
638	(x86-lap-directive frag-list :byte 0) ;regsave PC
639	(x86-lap-directive frag-list :byte 0) ;regsave ea
640	(x86-lap-directive frag-list :byte 0)) ;regsave mask
641	(:x8632
642	(make-x86-lap-label start-tag)
643	(make-x86-lap-label srt-tag)
644	(x86-lap-directive frag-list :short `(ash (+ (- (:^ ,end-code-tag) 4)
645	x86-lap-entry-offset) -2))
646	(emit-x86-lap-label frag-list start-tag)))
647	(x862-expand-vinsns vinsns frag-list instruction uuo-frag-list)
648	(when (or x862-double-float-constant-alist
649	x862-single-float-constant-alist)
650	(x86-lap-directive frag-list :align 3)
651	(dolist (double-pair x862-double-float-constant-alist)
652	(destructuring-bind (dfloat . lab) double-pair
653	(setf (vinsn-label-info lab) (emit-x86-lap-label frag-list lab))
654	(multiple-value-bind (high low)
655	(x862-double-float-bits dfloat)
656	(x86-lap-directive frag-list :long low)
657	(x86-lap-directive frag-list :long high))))
658	(dolist (single-pair x862-single-float-constant-alist)
659	(destructuring-bind (sfloat . lab) single-pair
660	(setf (vinsn-label-info lab) (emit-x86-lap-label frag-list lab))
661	(let* ((val (single-float-bits sfloat)))
662	(x86-lap-directive frag-list :long val)))))
663	(target-arch-case
664	(:x8632
665	(x86-lap-directive frag-list :align 2)
666	;; start of self reference table
667	(x86-lap-directive frag-list :long 0)
668	(emit-x86-lap-label frag-list srt-tag)
669	;; make space for self-reference offsets
670	(do-dll-nodes (frag frag-list)
671	(dolist (reloc (frag-relocs frag))
672	(when (eq (reloc-type reloc) :self)
673	(x86-lap-directive frag-list :long 0))))
674	(x86-lap-directive frag-list :long x8632::function-boundary-marker))
675	(:x8664
676	(x86-lap-directive frag-list :align 3)
677	(x86-lap-directive frag-list :quad x8664::function-boundary-marker)))
678
679	(emit-x86-lap-label frag-list end-code-tag)
680
681	(dolist (c (reverse x862-constant-alist))
682	(let* ((vinsn-label (cdr c)))
683	(or (vinsn-label-info vinsn-label)
684	(setf (vinsn-label-info vinsn-label)
685	(find-or-create-x86-lap-label
686	vinsn-label)))
687	(emit-x86-lap-label frag-list vinsn-label)
688	(target-arch-case
689	(:x8632
690	(x86-lap-directive frag-list :long 0))
691	(:x8664
692	(x86-lap-directive frag-list :quad 0)))))
693
694	(if (logbitp $fbitnonnullenv (the fixnum (afunc-bits afunc)))
695	(setq bits (+ bits (ash 1 $lfbits-nonnullenv-bit))))
696	(when (logbitp $fbitccoverage (the fixnum (afunc-bits afunc)))
697	(setq bits (+ bits (ash 1 $lfbits-code-coverage-bit))))
698	(setq debug-info (afunc-lfun-info afunc))
699	(when lambda-form
700	(setq debug-info
701	(list* 'function-lambda-expression lambda-form debug-info)))
702	(when x862-record-symbols
703	(setq debug-info
704	(list* 'function-symbol-map x862-recorded-symbols debug-info)))
705	(when (and (getf debug-info 'function-source-note) x862-emitted-source-notes)
706	(setq debug-info ;; Compressed below
707	(list* 'pc-source-map x862-emitted-source-notes debug-info)))
708	(when debug-info
709	(setq bits (logior (ash 1 $lfbits-info-bit) bits)))
710	(unless (or fname lambda-form x862-recorded-symbols)
711	(setq bits (logior (ash 1 $lfbits-noname-bit) bits)))
712	(unless (afunc-parent afunc)
713	(x862-fixup-fwd-refs afunc))
714	(setf (afunc-all-vars afunc) nil)
715	(setf (afunc-argsword afunc) bits)
716	(let* ((regsave-label (if (typep x862-compiler-register-save-label 'vinsn-note)
717	(vinsn-label-info (vinsn-note-label x862-compiler-register-save-label))))
718	(regsave-mask (if regsave-label (x862-register-mask-byte
719	x862-register-restore-count)))
720	(regsave-addr (if regsave-label (x862-encode-register-save-ea
721	x862-register-restore-ea
722	x862-register-restore-count))))
723	(target-arch-case
724	(:x8632
725	(when debug-info
726	(x86-lap-directive frag-list :long 0))
727	(when fname
728	(x86-lap-directive frag-list :long 0))
729	(x86-lap-directive frag-list :long 0))
730	(:x8664
731	(when debug-info
732	(x86-lap-directive frag-list :quad 0))
733	(when fname
734	(x86-lap-directive frag-list :quad 0))
735	(x86-lap-directive frag-list :quad 0)))
736
737	(relax-frag-list frag-list)
738	(apply-relocs frag-list)
739	(fill-for-alignment frag-list)
740	(target-arch-case
741	(:x8632
742	(let* ((label (find-x86-lap-label srt-tag))
743	(srt-frag (x86-lap-label-frag label))
744	(srt-index (x86-lap-label-offset label)))
745	;; fill in self-reference offsets
746	(do-dll-nodes (frag frag-list)
747	(dolist (reloc (frag-relocs frag))
748	(when (eq (reloc-type reloc) :self)
749	(setf (frag-ref-32 srt-frag srt-index)
750	(+ (frag-address frag) (reloc-pos reloc)))
751	(incf srt-index 4)))))
752	;;(show-frag-bytes frag-list)
753	))
754
755	(x862-lap-process-regsave-info frag-list regsave-label regsave-mask regsave-addr)
756
757	(when (getf debug-info 'pc-source-map)
758	(setf (getf debug-info 'pc-source-map) (x862-generate-pc-source-map debug-info)))
759	(when (getf debug-info 'function-symbol-map)
760	(setf (getf debug-info 'function-symbol-map) (x862-digest-symbols)))
761	(let ((source-note (getf debug-info 'function-source-note)))
762	(when source-note
763	(setf (getf debug-info 'function-source-note)
764	(source-note-for-%lfun-info source-note))))
765
766	(setf (afunc-lfun afunc)
767	#+x86-target
768	(if (eq host-backend target-backend)
769	(create-x86-function fname frag-list x862-constant-alist bits debug-info)
770	(cross-create-x86-function fname frag-list x862-constant-alist bits debug-info))
771	#-x86-target
772	(cross-create-x86-function fname frag-list x862-constant-alist bits debug-info)))))))
773	(backend-remove-labels))))
774	afunc))
775
776
777
778
779	(defun x862-make-stack (size &optional (subtype target::subtag-s16-vector))
780	(make-uarray-1 subtype size t 0 nil nil nil nil t nil))
781
782	(defun x862-fixup-fwd-refs (afunc)
783	(dolist (f (afunc-inner-functions afunc))
784	(x862-fixup-fwd-refs f))
785	(let ((fwd-refs (afunc-fwd-refs afunc)))
786	(when fwd-refs
787	(let* ((native-x86-functions #-x86-target nil
788	#+x86-target (eq target-backend
789	host-backend))
790	(v (if native-x86-functions
791	(function-to-function-vector (afunc-lfun afunc))
792	(afunc-lfun afunc)))
793	(vlen (uvsize v)))
794	(declare (fixnum vlen))
795	(dolist (ref fwd-refs)
796	(let* ((ref-fun (afunc-lfun ref)))
797	(do* ((i (if native-x86-functions
798	(%function-code-words
799	(function-vector-to-function v))
800	1)
801	(1+ i)))
802	((= i vlen))
803	(declare (fixnum i))
804	(if (eq (%svref v i) ref)
805	(setf (%svref v i) ref-fun)))))))))
806
807	(defun x862-generate-pc-source-map (debug-info)
808	(let* ((definition-source-note (getf debug-info 'function-source-note))
809	(emitted-source-notes (getf debug-info 'pc-source-map))
810	(def-start (source-note-start-pos definition-source-note))
811	(n (length emitted-source-notes))
812	(nvalid 0)
813	(max 0)
814	(pc-starts (make-array n))
815	(pc-ends (make-array n))
816	(text-starts (make-array n))
817	(text-ends (make-array n)))
818	(declare (fixnum n nvalid)
819	(dynamic-extent pc-starts pc-ends text-starts text-ends))
820	(dolist (start emitted-source-notes)
821	(let* ((pc-start (x862-vinsn-note-label-address start t))
822	(pc-end (x862-vinsn-note-label-address (vinsn-note-peer start) nil))
823	(source-note (aref (vinsn-note-info start) 0))
824	(text-start (- (source-note-start-pos source-note) def-start))
825	(text-end (- (source-note-end-pos source-note) def-start)))
826	(declare (fixnum pc-start pc-end text-start text-end))
827	(when (and (plusp pc-start)
828	(plusp pc-end)
829	(plusp text-start)
830	(plusp text-end))
831	(if (> pc-start max) (setq max pc-start))
832	(if (> pc-end max) (setq max pc-end))
833	(if (> text-start max) (setq max text-start))
834	(if (> text-end max) (setq max text-end))
835	(setf (svref pc-starts nvalid) pc-start
836	(svref pc-ends nvalid) pc-end
837	(svref text-starts nvalid) text-start
838	(svref text-ends nvalid) text-end)
839	(incf nvalid))))
840	(let* ((nentries (* nvalid 4))
841	(vec (cond ((< max #x100) (make-array nentries :element-type '(unsigned-byte 8)))
842	((< max #x10000) (make-array nentries :element-type '(unsigned-byte 16)))
843	(t (make-array nentries :element-type '(unsigned-byte 32))))))
844	(declare (fixnum nentries))
845	(do* ((i 0 (+ i 4))
846	(j 1 (+ j 4))
847	(k 2 (+ k 4))
848	(l 3 (+ l 4))
849	(idx 0 (1+ idx)))
850	((= i nentries) vec)
851	(declare (fixnum i j k l idx))
852	(setf (aref vec i) (svref pc-starts idx)
853	(aref vec j) (svref pc-ends idx)
854	(aref vec k) (svref text-starts idx)
855	(aref vec l) (svref text-ends idx))))))
856
857	(defun x862-vinsn-note-label-address (note &optional start-p sym)
858	(-
859	(let* ((label (vinsn-note-label note))
860	(lap-label (if label (vinsn-label-info label))))
861	(if lap-label
862	(x86-lap-label-address lap-label)
863	(compiler-bug "Missing or bad ~s label~@[: ~s~]"
864	(if start-p 'start 'end)
865	sym)))
866	(target-arch-case
867	(:x8632 x8632::fulltag-misc) ;xxx?
868	(:x8664 x8664::fulltag-function))))
869
870	(defun x862-digest-symbols ()
871	(when x862-recorded-symbols
872	(let* ((symlist x862-recorded-symbols)
873	(len (length symlist))
874	(syms (make-array len))
875	(ptrs (make-array (%i+ (%i+ len len) len)))
876	(i -1)
877	(j -1))
878	(declare (fixnum i j))
879	(dolist (info symlist (progn (%rplaca symlist syms)
880	(%rplacd symlist ptrs)))
881	(destructuring-bind (var sym startlab endlab) info
882	(let* ((ea (var-ea var))
883	(ea-val (ldb (byte 16 0) ea)))
884	(setf (aref ptrs (incf i)) (if (memory-spec-p ea)
885	(logior (ash ea-val 6) #o77)
886	ea-val)))
887	(setf (aref syms (incf j)) sym)
888	(setf (aref ptrs (incf i)) (x862-vinsn-note-label-address startlab t sym))
889	(setf (aref ptrs (incf i)) (x862-vinsn-note-label-address endlab nil sym))))
890	x862-recorded-symbols)))
891
892	(defun x862-decls (decls)
893	(if (fixnump decls)
894	(locally (declare (fixnum decls))
895	(setq x862-tail-allow (neq 0 (%ilogand2 $decl_tailcalls decls))
896	x862-open-code-inline (neq 0 (%ilogand2 $decl_opencodeinline decls))
897	x862-full-safety (neq 0 (%ilogand2 $decl_full_safety decls))
898	x862-reckless (neq 0 (%ilogand2 $decl_unsafe decls))
899	x862-trust-declarations (neq 0 (%ilogand2 $decl_trustdecls decls))))))
900
901
902	(defun %x862-bigger-cdr-than (x y)
903	(declare (cons x y))
904	(> (the fixnum (cdr x)) (the fixnum (cdr y))))
905
906	;;; Return an unordered list of "varsets": each var in a varset can be
907	;;; assigned a register and all vars in a varset can be assigned the
908	;;; same register (e.g., no scope conflicts.)
909
910	(defun x862-partition-vars (vars)
911	(labels ((var-weight (var)
912	(let* ((bits (nx-var-bits var)))
913	(declare (fixnum bits))
914	(if (eql 0 (logand bits (logior
915	(ash 1 $vbitpuntable)
916	(ash -1 $vbitspecial)
917	(ash 1 $vbitnoreg))))
918	(if (eql (logior (ash 1 $vbitclosed) (ash 1 $vbitsetq))
919	(logand bits (logior (ash 1 $vbitclosed) (ash 1 $vbitsetq))))
920	0
921	(%i+ (%ilogand $vrefmask bits) (%ilsr 8 (%ilogand $vsetqmask bits))))
922	0)))
923	(sum-weights (varlist)
924	(let ((sum 0))
925	(dolist (v varlist sum) (incf sum (var-weight v)))))
926	(vars-disjoint-p (v1 v2)
927	(if (eq v1 v2)
928	nil
929	(if (memq v1 (var-binding-info v2))
930	nil
931	(if (memq v2 (var-binding-info v1))
932	nil
933	t)))))
934	(setq vars (%sort-list-no-key
935	;(delete-if #'(lambda (v) (eql (var-weight v) 0)) vars)
936	(do* ((handle (cons nil vars))
937	(splice handle))
938	((null (cdr splice)) (cdr handle))
939	(declare (dynamic-extent handle) (type cons handle splice))
940	(if (eql 0 (var-weight (%car (cdr splice))))
941	(rplacd splice (%cdr (cdr splice)))
942	(setq splice (cdr splice))))
943	#'(lambda (v1 v2) (%i> (var-weight v1) (var-weight v2)))))
944	;; This isn't optimal. It partitions all register-allocatable
945	;; variables into sets such that
946	;; 1) no variable is a member of more than one set and
947	;; 2) all variables in a given set are disjoint from each other
948	;; A set might have exactly one member.
949	;; If a register is allocated for any member of a set, it's
950	;; allocated for all members of that set.
951	(let* ((varsets nil))
952	(do* ((all vars (cdr all)))
953	((null all))
954	(let* ((var (car all)))
955	(when (dolist (already varsets t)
956	(when (memq var (car already)) (return)))
957	(let* ((varset (cons var nil)))
958	(dolist (v (cdr all))
959	(when (dolist (already varsets t)
960	(when (memq v (car already)) (return)))
961	(when (dolist (d varset t)
962	(unless (vars-disjoint-p v d) (return)))
963	(push v varset))))
964	(let* ((weight (sum-weights varset)))
965	(declare (fixnum weight))
966	(if (>= weight 3)
967	(push (cons (nreverse varset) weight) varsets)))))))
968	varsets)))
969
970	;;; Maybe globally allocate registers to symbols naming functions & variables,
971	;;; and to simple lexical variables.
972	(defun x862-allocate-global-registers (fcells vcells all-vars no-regs)
973	(if (or no-regs (target-arch-case (:x8632 t)))
974	(progn
975	(dolist (c fcells) (%rplacd c nil))
976	(dolist (c vcells) (%rplacd c nil))
977	(values 0 nil))
978	(let* ((maybe (x862-partition-vars all-vars)))
979	(dolist (c fcells)
980	(if (>= (the fixnum (cdr c)) 3) (push c maybe)))
981	(dolist (c vcells)
982	(if (>= (the fixnum (cdr c)) 3) (push c maybe)))
983	(do* ((things (%sort-list-no-key maybe #'%x862-bigger-cdr-than) (cdr things))
984	(n 0 (1+ n))
985	(registers (target-arch-case
986	(:x8632 (error "no nvrs on x8632"))
987	(:x8664
988	(if (= (backend-lisp-context-register target-backend) x8664::save3)
989	(list x8664::save0 x8664::save1 x8664::save2)
990	(list x8664::save0 x8664::save1 x8664::save2 x8664::save3)))))
991	(regno (pop registers) (pop registers))
992	(constant-alist ()))
993	((or (null things) (null regno))
994	(dolist (cell fcells) (%rplacd cell nil))
995	(dolist (cell vcells) (%rplacd cell nil))
996	(values n constant-alist))
997	(declare (list things)
998	(fixnum n #\|regno\|#))
999	(let* ((thing (car things)))
1000	(if (or (memq thing fcells)
1001	(memq thing vcells))
1002	(push (cons thing regno) constant-alist)
1003	(dolist (var (car thing))
1004	(nx-set-var-bits var
1005	(%ilogior (%ilogand (%ilognot $vrefmask) (nx-var-bits var))
1006	regno
1007	(%ilsl $vbitreg 1))))))))))
1008
1009
1010
1011	;;; Vpush the last N non-volatile-registers.
1012	(defun x862-save-nvrs (seg n)
1013	(declare (fixnum n))
1014	(target-arch-case
1015	;; no nvrs on x8632
1016	(:x8664
1017	(when (> n 0)
1018	(setq x862-compiler-register-save-label (x862-emit-note seg :regsave))
1019	(with-x86-local-vinsn-macros (seg)
1020	(let* ((mask x8664-nonvolatile-node-regs))
1021	(dotimes (i n)
1022	(let* ((reg (1- (integer-length mask))))
1023	(x862-vpush-register seg reg :regsave reg 0)
1024	(setq mask (logandc2 mask (ash 1 reg)))))))
1025	(setq x862-register-restore-ea x862-vstack
1026	x862-register-restore-count n)))))
1027
1028
1029	;;; If there are an indefinite number of args/values on the vstack,
1030	;;; we have to restore from a register that matches the compiler's
1031	;;; notion of the vstack depth. This can be computed by the caller
1032	;;; (sum of vsp & nargs, or copy of vsp before indefinite number of
1033	;;; args pushed, etc.)
1034
1035
1036	(defun x862-restore-nvrs (seg ea nregs &optional (can-pop t))
1037	(target-arch-case
1038	;; no nvrs on x8632
1039	(:x8664
1040	(when (and ea nregs)
1041	(with-x86-local-vinsn-macros (seg)
1042	(let* ((mask x8664-nonvolatile-node-regs)
1043	(regs ()))
1044	(dotimes (i nregs)
1045	(let* ((reg (1- (integer-length mask))))
1046	(push reg regs)
1047	(setq mask (logandc2 mask (ash 1 reg)))))
1048	(cond (can-pop
1049	(let* ((diff-in-bytes (- x862-vstack ea)))
1050	(unless (zerop diff-in-bytes)
1051	(x862-adjust-vstack diff-in-bytes)
1052	(! vstack-discard (floor diff-in-bytes x862-target-node-size)))
1053	(dolist (reg regs)
1054	(! vpop-register reg))))
1055	(t
1056	(dolist (reg regs)
1057	(! vframe-load reg (- ea x862-target-node-size) ea)
1058	(decf ea x862-target-node-size))))))))))
1059
1060
1061	(defun x862-bind-lambda (seg lcells req opt rest keys auxen optsupvloc passed-in-regs lexpr &optional inherited
1062	&aux (vloc 0) (numopt (list-length (%car opt)))
1063	(nkeys (list-length (%cadr keys)))
1064	reg)
1065	(declare (fixnum vloc))
1066	(x862-check-lcell-depth)
1067	(dolist (arg inherited)
1068	(if (memq arg passed-in-regs)
1069	(x862-set-var-ea seg arg (var-ea arg))
1070	(let* ((lcell (pop lcells)))
1071	(if (setq reg (x862-assign-register-var arg))
1072	(x862-init-regvar seg arg reg (x862-vloc-ea vloc))
1073	(x862-bind-var seg arg vloc lcell))
1074	(setq vloc (%i+ vloc x862-target-node-size)))))
1075	(dolist (arg req)
1076	(if (memq arg passed-in-regs)
1077	(x862-set-var-ea seg arg (var-ea arg))
1078	(let* ((lcell (pop lcells)))
1079	(if (setq reg (x862-assign-register-var arg))
1080	(x862-init-regvar seg arg reg (x862-vloc-ea vloc))
1081	(x862-bind-var seg arg vloc lcell))
1082	(setq vloc (%i+ vloc x862-target-node-size)))))
1083	(when opt
1084	(if (x862-hard-opt-p opt)
1085	(setq vloc (apply #'x862-initopt seg vloc optsupvloc lcells (nthcdr (- (length lcells) numopt) lcells) opt)
1086	lcells (nthcdr numopt lcells))
1087
1088	(dolist (var (%car opt))
1089	(if (memq var passed-in-regs)
1090	(x862-set-var-ea seg var (var-ea var))
1091	(let* ((lcell (pop lcells)))
1092	(if (setq reg (x862-assign-register-var var))
1093	(x862-init-regvar seg var reg (x862-vloc-ea vloc))
1094	(x862-bind-var seg var vloc lcell))
1095	(setq vloc (+ vloc x862-target-node-size)))))))
1096
1097	(when rest
1098	(if lexpr
1099	(progn
1100	(if (setq reg (x862-assign-register-var rest))
1101	(progn
1102	(x862-copy-register seg reg x862-arg-z)
1103	(x862-set-var-ea seg rest reg))
1104	(let* ((loc x862-vstack))
1105	(x862-vpush-register seg x862-arg-z :reserved)
1106	(x862-note-top-cell rest)
1107	(x862-bind-var seg rest loc x862-top-vstack-lcell))))
1108	(let* ((rvloc (+ vloc (* 2 x862-target-node-size nkeys))))
1109	(if (setq reg (x862-assign-register-var rest))
1110	(x862-init-regvar seg rest reg (x862-vloc-ea rvloc))
1111	(x862-bind-var seg rest rvloc (pop lcells))))))
1112	(when keys
1113	(apply #'x862-init-keys seg vloc lcells keys))
1114	(x862-seq-bind seg (%car auxen) (%cadr auxen)))
1115
1116
1117	(defun x862-initopt (seg vloc spvloc lcells splcells vars inits spvars)
1118	(with-x86-local-vinsn-macros (seg)
1119	(dolist (var vars vloc)
1120	(let* ((initform (pop inits))
1121	(spvar (pop spvars))
1122	(lcell (pop lcells))
1123	(splcell (pop splcells))
1124	(reg (x862-assign-register-var var))
1125	(regloadedlabel (if reg (backend-get-next-label))))
1126	(unless (nx-null initform)
1127	(let ((skipinitlabel (backend-get-next-label)))
1128	(with-crf-target () crf
1129	(x862-compare-ea-to-nil seg crf (x862-make-compound-cd 0 skipinitlabel) (x862-vloc-ea spvloc) x86::x86-e-bits t))
1130	(if reg
1131	(x862-form seg reg regloadedlabel initform)
1132	(x862-register-to-stack seg (x862-one-untargeted-reg-form seg initform ($ x862-arg-z)) (x862-vloc-ea vloc)))
1133	(@ skipinitlabel)))
1134	(if reg
1135	(progn
1136	(x862-init-regvar seg var reg (x862-vloc-ea vloc))
1137	(@ regloadedlabel))
1138	(x862-bind-var seg var vloc lcell))
1139	(when spvar
1140	(if (setq reg (x862-assign-register-var spvar))
1141	(x862-init-regvar seg spvar reg (x862-vloc-ea spvloc))
1142	(x862-bind-var seg spvar spvloc splcell))))
1143	(setq vloc (%i+ vloc x862-target-node-size))
1144	(if spvloc (setq spvloc (%i+ spvloc x862-target-node-size))))))
1145
1146	(defun x862-init-keys (seg vloc lcells allow-others keyvars keysupp keyinits keykeys)
1147	(declare (ignore keykeys allow-others))
1148	(with-x86-local-vinsn-macros (seg)
1149	(dolist (var keyvars)
1150	(let* ((spvar (pop keysupp))
1151	(initform (pop keyinits))
1152	(reg (x862-assign-register-var var))
1153	(regloadedlabel (if reg (backend-get-next-label)))
1154	(var-lcell (pop lcells))
1155	(sp-lcell (pop lcells))
1156	(sploc (%i+ vloc x862-target-node-size)))
1157	(unless (nx-null initform)
1158	(let ((skipinitlabel (backend-get-next-label)))
1159	(with-crf-target () crf
1160	(x862-compare-ea-to-nil seg crf (x862-make-compound-cd 0 skipinitlabel) (x862-vloc-ea sploc) x86::x86-e-bits t))
1161	(if reg
1162	(x862-form seg reg regloadedlabel initform)
1163	(x862-register-to-stack seg (x862-one-untargeted-reg-form seg initform ($ x862-arg-z)) (x862-vloc-ea vloc)))
1164	(@ skipinitlabel)))
1165	(if reg
1166	(progn
1167	(x862-init-regvar seg var reg (x862-vloc-ea vloc))
1168	(@ regloadedlabel))
1169	(x862-bind-var seg var vloc var-lcell))
1170	(when spvar
1171	(if (setq reg (x862-assign-register-var spvar))
1172	(x862-init-regvar seg spvar reg (x862-vloc-ea sploc))
1173	(x862-bind-var seg spvar sploc sp-lcell))))
1174	(setq vloc (%i+ vloc (* 2 x862-target-node-size))))))
1175
1176	;;; Vpush register r, unless var gets a globally-assigned register.
1177	;;; Return NIL if register was vpushed, else var.
1178	(defun x862-vpush-arg-register (seg reg var)
1179	(when var
1180	(let* ((bits (nx-var-bits var)))
1181	(declare (fixnum bits))
1182	(if (logbitp $vbitreg bits)
1183	var
1184	(progn
1185	(x862-vpush-register seg reg :reserved)
1186	nil)))))
1187
1188
1189	;;; nargs has been validated, arguments defaulted and canonicalized.
1190	;;; Save caller's context, then vpush any argument registers that
1191	;;; didn't get global registers assigned to their variables.
1192	;;; Return a list of vars/nils for each argument register
1193	;;; (nil if vpushed, var if still in arg_reg).
1194	(defun x862-argregs-entry (seg revargs &optional variable-args-entry)
1195	(with-x86-local-vinsn-macros (seg)
1196	(let* ((nargs (length revargs))
1197	(reg-vars ()))
1198	(declare (type (unsigned-byte 16) nargs))
1199	(unless variable-args-entry
1200	(if (<= nargs x862-target-num-arg-regs) ; caller didn't vpush anything
1201	(! save-lisp-context-no-stack-args)
1202	(let* ((offset (* (the fixnum (- nargs x862-target-num-arg-regs)) x862-target-node-size)))
1203	(declare (fixnum offset))
1204	(! save-lisp-context-offset offset))))
1205	(target-arch-case
1206	(:x8632
1207	(destructuring-bind (&optional zvar yvar &rest stack-args) revargs
1208	(let* ((nstackargs (length stack-args)))
1209	(x862-set-vstack (* nstackargs x862-target-node-size))
1210	(dotimes (i nstackargs)
1211	(x862-new-vstack-lcell :reserved x862-target-lcell-size 0 nil))
1212	(if (>= nargs 2)
1213	(push (x862-vpush-arg-register seg ($ x862-arg-y) yvar) reg-vars))
1214	(if (>= nargs 1)
1215	(push (x862-vpush-arg-register seg ($ x862-arg-z) zvar) reg-vars)))))
1216	(:x8664
1217	(destructuring-bind (&optional zvar yvar xvar &rest stack-args) revargs
1218	(let* ((nstackargs (length stack-args)))
1219	(x862-set-vstack (* nstackargs x862-target-node-size))
1220	(dotimes (i nstackargs)
1221	(x862-new-vstack-lcell :reserved x862-target-lcell-size 0 nil))
1222	(if (>= nargs 3)
1223	(push (x862-vpush-arg-register seg ($ x8664::arg_x) xvar) reg-vars))
1224	(if (>= nargs 2)
1225	(push (x862-vpush-arg-register seg ($ x862-arg-y) yvar) reg-vars))
1226	(if (>= nargs 1)
1227	(push (x862-vpush-arg-register seg ($ x862-arg-z) zvar) reg-vars))))))
1228	reg-vars)))
1229
1230	;;; Just required args.
1231	;;; Since this is just a stupid bootstrapping port, always save
1232	;;; lisp context.
1233	(defun x862-req-nargs-entry (seg rev-fixed-args)
1234	(let* ((nargs (length rev-fixed-args)))
1235	(declare (type (unsigned-byte 16) nargs))
1236	(with-x86-local-vinsn-macros (seg)
1237	(unless x862-reckless
1238	(! check-exact-nargs nargs))
1239	(x862-argregs-entry seg rev-fixed-args))))
1240
1241	;;; No more &optional args than register args; all &optionals default
1242	;;; to NIL and none have supplied-p vars. No &key/&rest.
1243	(defun x862-simple-opt-entry (seg rev-opt-args rev-req-args)
1244	(let* ((min (length rev-req-args))
1245	(nopt (length rev-opt-args))
1246	(max (+ min nopt)))
1247	(declare (type (unsigned-byte 16) min nopt max))
1248	(with-x86-local-vinsn-macros (seg)
1249	(unless x862-reckless
1250	(if rev-req-args
1251	(! check-min-max-nargs min max)
1252	(! check-max-nargs max)))
1253	(if (> min x862-target-num-arg-regs)
1254	(! save-lisp-context-in-frame)
1255	(if (<= max x862-target-num-arg-regs)
1256	(! save-lisp-context-no-stack-args)
1257	(! save-lisp-context-variable-arg-count)))
1258	(if (= nopt 1)
1259	(! default-1-arg min)
1260	(if (= nopt 2)
1261	(! default-2-args min)
1262	(! default-3-args min)))
1263	(x862-argregs-entry seg (append rev-opt-args rev-req-args) t))))
1264
1265	;;; if "num-fixed" is > 0, we've already ensured that at least that many args
1266	;;; were provided; that may enable us to generate better code for saving the
1267	;;; argument registers.
1268	;;; We're responsible for computing the caller's VSP and saving
1269	;;; caller's state.
1270	(defun x862-lexpr-entry (seg num-fixed)
1271	(with-x86-local-vinsn-macros (seg)
1272	(! save-lexpr-argregs num-fixed)
1273	;; The "lexpr" (address of saved nargs register, basically
1274	;; is now in arg_z
1275	(! build-lexpr-frame)
1276	(dotimes (i num-fixed)
1277	(! copy-lexpr-argument (- num-fixed i)))))
1278
1279
1280	(defun x862-structured-initopt (seg lcells vloc context vars inits spvars)
1281	(with-x86-local-vinsn-macros (seg)
1282	(dolist (var vars vloc)
1283	(let* ((initform (pop inits))
1284	(spvar (pop spvars))
1285	(spvloc (%i+ vloc x862-target-node-size))
1286	(var-lcell (pop lcells))
1287	(sp-lcell (pop lcells)))
1288	(unless (nx-null initform)
1289	(let ((skipinitlabel (backend-get-next-label)))
1290	(with-crf-target () crf
1291	(x862-compare-ea-to-nil seg crf (x862-make-compound-cd 0 skipinitlabel) (x862-vloc-ea spvloc) x86::x86-e-bits t))
1292	(x862-register-to-stack seg (x862-one-untargeted-reg-form seg initform ($ x862-arg-z)) (x862-vloc-ea vloc))
1293	(@ skipinitlabel)))
1294	(x862-bind-structured-var seg var vloc var-lcell context)
1295	(when spvar
1296	(x862-bind-var seg spvar spvloc sp-lcell)))
1297	(setq vloc (%i+ vloc (* 2 x862-target-node-size))))))
1298
1299
1300
1301	(defun x862-structured-init-keys (seg lcells vloc context allow-others keyvars keysupp keyinits keykeys)
1302	(declare (ignore keykeys allow-others))
1303	(with-x86-local-vinsn-macros (seg)
1304	(dolist (var keyvars)
1305	(let* ((spvar (pop keysupp))
1306	(initform (pop keyinits))
1307	(sploc (%i+ vloc x862-target-node-size))
1308	(var-lcell (pop lcells))
1309	(sp-reg ($ x862-arg-z))
1310	(sp-lcell (pop lcells)))
1311	(unless (nx-null initform)
1312	(x862-stack-to-register seg (x862-vloc-ea sploc) sp-reg)
1313	(let ((skipinitlabel (backend-get-next-label)))
1314	(with-crf-target () crf
1315	(x862-compare-register-to-nil seg crf (x862-make-compound-cd 0 skipinitlabel) sp-reg x86::x86-e-bits t))
1316	(x862-register-to-stack seg (x862-one-untargeted-reg-form seg initform ($ x862-arg-z)) (x862-vloc-ea vloc))
1317	(@ skipinitlabel)))
1318	(x862-bind-structured-var seg var vloc var-lcell context)
1319	(when spvar
1320	(x862-bind-var seg spvar sploc sp-lcell)))
1321	(setq vloc (%i+ vloc (* 2 x862-target-node-size))))))
1322
1323	(defun x862-vloc-ea (n &optional vcell-p)
1324	(setq n (make-memory-spec (dpb memspec-frame-address memspec-type-byte n)))
1325	(if vcell-p
1326	(make-vcell-memory-spec n)
1327	n))
1328
1329	(defun x862-form (seg vreg xfer form &aux (note (acode-note form)))
1330	(flet ((main (seg vreg xfer form)
1331	(if (nx-null form)
1332	(x862-nil seg vreg xfer)
1333	(if (nx-t form)
1334	(x862-t seg vreg xfer)
1335	(let* ((op nil)
1336	(fn nil))
1337	(if (and (consp form)
1338	(setq fn (svref x862-specials (%ilogand #.operator-id-mask (setq op (acode-operator form))))))
1339	(if (and (null vreg)
1340	(%ilogbitp operator-acode-subforms-bit op)
1341	(%ilogbitp operator-assignment-free-bit op))
1342	(dolist (f (%cdr form) (x862-branch seg xfer))
1343	(x862-form seg nil nil f ))
1344	(apply fn seg vreg xfer (%cdr form)))
1345	(compiler-bug "x862-form ? ~s" form)))))))
1346	(if note
1347	(let* ((start (x862-emit-note seg :source-location-begin note))
1348	(bits (main seg vreg xfer form))
1349	(end (x862-emit-note seg :source-location-end)))
1350	(setf (vinsn-note-peer start) end
1351	(vinsn-note-peer end) start)
1352	(push start x862-emitted-source-notes)
1353	bits)
1354	(main seg vreg xfer form))))
1355
1356	;;; dest is a float reg - form is acode
1357	(defun x862-form-float (seg freg xfer form)
1358	(declare (ignore xfer))
1359	(when (or (nx-null form)(nx-t form))(compiler-bug "x862-form to freg ~s" form))
1360	(when (and (= (get-regspec-mode freg) hard-reg-class-fpr-mode-double)
1361	(x862-form-typep form 'double-float))
1362	;; kind of screwy - encoding the source type in the dest register spec
1363	(set-node-regspec-type-modes freg hard-reg-class-fpr-type-double))
1364	(let* ((fn nil))
1365	(if (and (consp form)
1366	(setq fn (svref x862-specials (%ilogand #.operator-id-mask (acode-operator form)))))
1367	(apply fn seg freg nil (%cdr form))
1368	(compiler-bug "x862-form ? ~s" form))))
1369
1370
1371
1372	(defun x862-form-typep (form type)
1373	(acode-form-typep form type x862-trust-declarations)
1374	)
1375
1376	(defun x862-form-type (form)
1377	(acode-form-type form x862-trust-declarations))
1378
1379	(defun x862-use-operator (op seg vreg xfer &rest forms)
1380	(declare (dynamic-extent forms))
1381	(apply (svref x862-specials (%ilogand operator-id-mask op)) seg vreg xfer forms))
1382
1383	;;; Returns true iff lexical variable VAR isn't setq'ed in FORM.
1384	;;; Punts a lot ...
1385	(defun x862-var-not-set-by-form-p (var form)
1386	(or (not (%ilogbitp $vbitsetq (nx-var-bits var)))
1387	(x862-setqed-var-not-set-by-form-p var form)))
1388
1389	(defun x862-setqed-var-not-set-by-form-p (var form)
1390	(setq form (acode-unwrapped-form form))
1391	(or (atom form)
1392	(x86-constant-form-p form)
1393	(x862-lexical-reference-p form)
1394	(let ((op (acode-operator form))
1395	(subforms nil))
1396	(if (eq op (%nx1-operator setq-lexical))
1397	(and (neq var (cadr form))
1398	(x862-setqed-var-not-set-by-form-p var (caddr form)))
1399	(and (%ilogbitp operator-side-effect-free-bit op)
1400	(flet ((not-set-in-formlist (formlist)
1401	(dolist (subform formlist t)
1402	(unless (x862-setqed-var-not-set-by-form-p var subform) (return)))))
1403	(if
1404	(cond ((%ilogbitp operator-acode-subforms-bit op) (setq subforms (%cdr form)))
1405	((%ilogbitp operator-acode-list-bit op) (setq subforms (cadr form))))
1406	(not-set-in-formlist subforms)
1407	(and (or (eq op (%nx1-operator call))
1408	(eq op (%nx1-operator lexical-function-call)))
1409	(x862-setqed-var-not-set-by-form-p var (cadr form))
1410	(setq subforms (caddr form))
1411	(not-set-in-formlist (car subforms))
1412	(not-set-in-formlist (cadr subforms))))))))))
1413
1414	(defun x862-check-fixnum-overflow (seg target &optional labelno)
1415	(with-x86-local-vinsn-macros (seg)
1416	(if x862-open-code-inline
1417	(let* ((no-overflow (backend-get-next-label)))
1418	(! set-bigits-and-header-for-fixnum-overflow target (aref backend-labels (or labelno no-overflow)))
1419	(! %allocate-uvector target)
1420	(! set-bigits-after-fixnum-overflow target)
1421	(when labelno
1422	(-> labelno))
1423	(@ no-overflow))
1424	(if labelno
1425	(! fix-fixnum-overflow-ool-and-branch target (aref backend-labels labelno))
1426	(! fix-fixnum-overflow-ool target)))))
1427
1428	(defun x862-nil (seg vreg xfer)
1429	(with-x86-local-vinsn-macros (seg vreg xfer)
1430	(if (eq vreg :push)
1431	(progn
1432	(! vpush-fixnum (target-nil-value))
1433	(^))
1434	(progn
1435	(if (x862-for-value-p vreg)
1436	(ensuring-node-target (target vreg)
1437	(! load-nil target)))
1438	(x862-branch seg (x862-cd-false xfer))))))
1439
1440	(defun x862-t (seg vreg xfer)
1441	(with-x86-local-vinsn-macros (seg vreg xfer)
1442	(if (eq vreg :push)
1443	(progn
1444	(! vpush-fixnum (target-t-value))
1445	(^))
1446	(progn
1447	(if (x862-for-value-p vreg)
1448	(ensuring-node-target (target vreg)
1449	(! load-t target)))
1450	(x862-branch seg (x862-cd-true xfer))))))
1451
1452	(defun x862-for-value-p (vreg)
1453	(and vreg (not (backend-crf-p vreg))))
1454
1455	(defun x862-mvpass (seg form &optional xfer)
1456	(with-x86-local-vinsn-macros (seg)
1457	(x862-form seg ($ x862-arg-z) (logior (or xfer 0) $backend-mvpass-mask) form)))
1458
1459	(defun x862-adjust-vstack (delta)
1460	(x862-set-vstack (%i+ x862-vstack delta)))
1461
1462	(defun x862-set-vstack (new)
1463	(setq x862-vstack (or new 0)))
1464
1465
1466	;;; Emit a note at the end of the segment.
1467	(defun x862-emit-note (seg class &rest info)
1468	(declare (dynamic-extent info))
1469	(let* ((note (make-vinsn-note class info)))
1470	(append-dll-node (vinsn-note-label note) seg)
1471	note))
1472
1473	;;; Emit a note immediately before the target vinsn.
1474	(defun x86-prepend-note (vinsn class &rest info)
1475	(declare (dynamic-extent info))
1476	(let* ((note (make-vinsn-note class info)))
1477	(insert-dll-node-before (vinsn-note-label note) vinsn)
1478	note))
1479
1480	(defun x862-close-note (seg note)
1481	(let* ((end (close-vinsn-note note)))
1482	(append-dll-node (vinsn-note-label end) seg)
1483	end))
1484
1485
1486
1487
1488
1489
1490	(defun x862-stack-to-register (seg memspec reg)
1491	(with-x86-local-vinsn-macros (seg)
1492	(let* ((offset (memspec-frame-address-offset memspec)))
1493	(if (and x862-tos-reg
1494	(= offset (- x862-vstack x862-target-node-size)))
1495	(x862-copy-register seg reg x862-tos-reg)
1496	(! vframe-load reg offset x862-vstack)))))
1497
1498	(defun x862-lcell-to-register (seg lcell reg)
1499	(with-x86-local-vinsn-macros (seg)
1500	(! lcell-load reg lcell (x862-vstack-mark-top))))
1501
1502	(defun x862-register-to-lcell (seg reg lcell)
1503	(with-x86-local-vinsn-macros (seg)
1504	(! lcell-store reg lcell (x862-vstack-mark-top))))
1505
1506	(defun x862-register-to-stack (seg reg memspec)
1507	(with-x86-local-vinsn-macros (seg)
1508	(! vframe-store reg (memspec-frame-address-offset memspec) x862-vstack)))
1509
1510
1511	(defun x862-ea-open (ea)
1512	(if (and ea (not (typep ea 'lreg)) (addrspec-vcell-p ea))
1513	(make-memory-spec (memspec-frame-address-offset ea))
1514	ea))
1515
1516	(defun x862-set-NARGS (seg n)
1517	(if (> n call-arguments-limit)
1518	(error "~s exceeded." call-arguments-limit)
1519	(with-x86-local-vinsn-macros (seg)
1520	(! set-nargs n))))
1521
1522	(defun x862-assign-register-var (v)
1523	(let ((bits (nx-var-bits v)))
1524	(when (%ilogbitp $vbitreg bits)
1525	(%ilogand bits $vrefmask))))
1526
1527	(defun x862-single-float-bits (the-sf)
1528	(single-float-bits the-sf))
1529
1530	(defun x862-double-float-bits (the-df)
1531	(double-float-bits the-df))
1532
1533	(defun x862-push-immediate (seg xfer form)
1534	(with-x86-local-vinsn-macros (seg)
1535	(if (typep form 'character)
1536	(! vpush-fixnum (logior (ash (char-code form) 8)
1537	(arch::target-subtag-char (backend-target-arch target-backend))))
1538	(let* ((reg (x862-register-constant-p form)))
1539	(if reg
1540	(! vpush-register reg)
1541	(let* ((lab (x86-immediate-label form)))
1542	(! vpush-constant lab)))))
1543	(x862-branch seg xfer)))
1544
1545
1546	(pushnew (%nx1-operator immediate) x862-operator-supports-push)
1547	(defun x862-immediate (seg vreg xfer form)
1548	(if (eq vreg :push)
1549	(x862-push-immediate seg xfer form)
1550	(with-x86-local-vinsn-macros (seg vreg xfer)
1551	(if vreg
1552	(if (and (= (hard-regspec-class vreg) hard-reg-class-fpr)
1553	(or (and (typep form 'double-float) (= (get-regspec-mode vreg) hard-reg-class-fpr-mode-double))
1554	(and (typep form 'short-float)(= (get-regspec-mode vreg) hard-reg-class-fpr-mode-single))))
1555	(if (zerop form)
1556	(if (eql form 0.0d0)
1557	(! zero-double-float-register vreg)
1558	(! zero-single-float-register vreg))
1559	(if (typep form 'short-float)
1560	(let* ((lab (x86-single-float-constant-label form)))
1561	(! load-single-float-constant vreg lab))
1562	(let* ((lab (x86-double-float-constant-label form)))
1563	(! load-double-float-constant vreg lab))))
1564	(target-arch-case
1565	(:x8632
1566	(if (and (= (hard-regspec-class vreg) hard-reg-class-gpr)
1567	(member (get-regspec-mode vreg)
1568	'(hard-reg-class-gpr-mode-u32
1569	hard-reg-class-gpr-mode-s32
1570	hard-reg-class-gpr-mode-address))
1571	(or (typep form '(unsigned-byte 32))
1572	(typep form '(signed-byte 32))))
1573	;; The bits fit. Get them in the register somehow.
1574	(if (typep form '(signed-byte 32))
1575	(x862-lri seg vreg form)
1576	(x862-lriu seg vreg form))
1577	(ensuring-node-target (target vreg)
1578	(if (characterp form)
1579	(! load-character-constant target (char-code form))
1580	(x862-store-immediate seg form target)))))
1581	(:x8664
1582	(if (and (typep form '(unsigned-byte 32))
1583	(= (hard-regspec-class vreg) hard-reg-class-gpr)
1584	(= (get-regspec-mode vreg)
1585	hard-reg-class-gpr-mode-u32))
1586	(x862-lri seg vreg form)
1587	(ensuring-node-target
1588	(target vreg)
1589	(if (characterp form)
1590	(! load-character-constant target (char-code form))
1591	(x862-store-immediate seg form target)))))))
1592	(if (and (listp form) load-time-eval-token (eq (car form) load-time-eval-token))
1593	(x862-store-immediate seg form ($ x862-temp0))))
1594	(^))))
1595
1596	(defun x862-register-constant-p (form)
1597	(and (consp form)
1598	(or (memq form x862-vcells)
1599	(memq form x862-fcells))
1600	(%cdr form)))
1601
1602	(defun x862-store-immediate (seg imm dest)
1603	(with-x86-local-vinsn-macros (seg)
1604	(let* ((reg (x862-register-constant-p imm)))
1605	(if reg
1606	(x862-copy-register seg dest reg)
1607	(let* ((lab (x86-immediate-label imm)))
1608	(! ref-constant dest lab)))
1609	dest)))
1610
1611
1612	;;; Returns label iff form is (local-go <tag>) and can go without adjusting stack.
1613	(defun x862-go-label (form)
1614	(let ((current-stack (x862-encode-stack)))
1615	(while (and (acode-p form) (or (eq (acode-operator form) (%nx1-operator progn))
1616	(eq (acode-operator form) (%nx1-operator local-tagbody))))
1617	(setq form (caadr form)))
1618	(when (acode-p form)
1619	(let ((op (acode-operator form)))
1620	(if (and (eq op (%nx1-operator local-go))
1621	(x862-equal-encodings-p (%caddr (%cadr form)) current-stack))
1622	(%cadr (%cadr form))
1623	(if (and (eq op (%nx1-operator local-return-from))
1624	(nx-null (caddr form)))
1625	(let ((tagdata (car (cadr form))))
1626	(and (x862-equal-encodings-p (cdr tagdata) current-stack)
1627	(null (caar tagdata))
1628	(< 0 (cdar tagdata) $backend-mvpass)
1629	(cdar tagdata)))))))))
1630
1631	(defun x862-single-valued-form-p (form)
1632	(setq form (acode-unwrapped-form-value form))
1633	(or (nx-null form)
1634	(nx-t form)
1635	(if (acode-p form)
1636	(let ((op (acode-operator form)))
1637	(or (%ilogbitp operator-single-valued-bit op)
1638	(and (eql op (%nx1-operator values))
1639	(let ((values (cadr form)))
1640	(and values (null (cdr values)))))
1641	nil ; Learn about functions someday
1642	)))))
1643
1644	(defun x862-box-s32 (seg node-dest s32-src)
1645	(with-x86-local-vinsn-macros (seg)
1646	(if (target-arch-case
1647	(:x8632 nil)
1648	(:x8664 t))
1649	(! box-fixnum node-dest s32-src)
1650	(let* ((arg_z ($ x862-arg-z))
1651	(imm0 ($ x862-imm0 :mode :s32)))
1652	(x862-copy-register seg imm0 s32-src)
1653	(! call-subprim (subprim-name->offset '.SPmakes32))
1654	(x862-copy-register seg node-dest arg_z)))))
1655
1656	(defun x862-box-s64 (seg node-dest s64-src)
1657	(with-x86-local-vinsn-macros (seg)
1658	(if (target-arch-case
1659	(:x8632 (error "bug"))
1660	(:x8664 x862-open-code-inline))
1661	(let* ((no-overflow (backend-get-next-label)))
1662	(! %set-z-flag-if-s64-fits-in-fixnum node-dest s64-src)
1663	(! cbranch-true (aref backend-labels no-overflow) x86::x86-e-bits)
1664	(! setup-bignum-alloc-for-s64-overflow s64-src)
1665	(! %allocate-uvector node-dest)
1666	(! set-bigits-after-fixnum-overflow node-dest)
1667	(@ no-overflow))
1668	(let* ((arg_z ($ x862-arg-z))
1669	(imm0 (make-wired-lreg x862-imm0 :mode (get-regspec-mode s64-src))))
1670	(x862-copy-register seg imm0 s64-src)
1671	(! call-subprim (subprim-name->offset '.SPmakes64))
1672	(x862-copy-register seg node-dest arg_z)))))
1673
1674	(defun x862-box-u32 (seg node-dest u32-src)
1675	(with-x86-local-vinsn-macros (seg)
1676	(target-arch-case
1677	(:x8632
1678	(let* ((arg_z ($ x862-arg-z))
1679	(imm0 ($ x862-imm0 :mode :u32)))
1680	(x862-copy-register seg imm0 u32-src)
1681	(! call-subprim (subprim-name->offset '.SPmakeu32))
1682	(x862-copy-register seg node-dest arg_z)))
1683	(:x8664
1684	(! box-fixnum node-dest u32-src)))))
1685
1686	(defun x862-box-u64 (seg node-dest u64-src)
1687	(with-x86-local-vinsn-macros (seg)
1688	(if (target-arch-case
1689	(:x8632 (error "bug"))
1690	(:x8664 x862-open-code-inline))
1691	(let* ((no-overflow (backend-get-next-label)))
1692	(! %set-z-flag-if-u64-fits-in-fixnum node-dest u64-src)
1693	(! cbranch-true (aref backend-labels no-overflow) x86::x86-e-bits)
1694	(! setup-bignum-alloc-for-u64-overflow u64-src)
1695	(! %allocate-uvector node-dest)
1696	(! set-bigits-after-fixnum-overflow node-dest)
1697	(@ no-overflow))
1698	(let* ((arg_z ($ x862-arg-z))
1699	(imm0 ($ x862-imm0 :mode :u64)))
1700	(x862-copy-register seg imm0 u64-src)
1701	(! call-subprim (subprim-name->offset '.SPmakeu64))
1702	(x862-copy-register seg node-dest arg_z)))))
1703
1704	(defun x862-single->heap (seg dest src)
1705	(with-x86-local-vinsn-macros (seg)
1706	(! setup-single-float-allocation)
1707	(! %allocate-uvector dest)
1708	(! set-single-float-value dest src)))
1709
1710	(defun x862-double->heap (seg dest src)
1711	(with-x86-local-vinsn-macros (seg)
1712	(! setup-double-float-allocation)
1713	(! %allocate-uvector dest)
1714	(! set-double-float-value dest src)))
1715
1716
1717	(defun x862-vref1 (seg vreg xfer type-keyword src unscaled-idx index-known-fixnum)
1718	(with-x86-local-vinsn-macros (seg vreg xfer)
1719	(when vreg
1720	(let* ((arch (backend-target-arch target-backend))
1721	(is-node (member type-keyword (arch::target-gvector-types arch)))
1722	(is-1-bit (member type-keyword (arch::target-1-bit-ivector-types arch)))
1723
1724	(is-8-bit (member type-keyword (arch::target-8-bit-ivector-types arch)))
1725	(is-16-bit (member type-keyword (arch::target-16-bit-ivector-types arch)))
1726	(is-32-bit (member type-keyword (arch::target-32-bit-ivector-types arch)))
1727	(is-64-bit (member type-keyword (arch::target-64-bit-ivector-types arch)))
1728	(is-signed (member type-keyword '(:signed-8-bit-vector :signed-16-bit-vector :signed-32-bit-vector :signed-64-bit-vector :fixnum-vector)))
1729	(vreg-class (and (not (eq vreg :push)) (hard-regspec-class vreg)))
1730	(vreg-mode
1731	(if (eql vreg-class hard-reg-class-gpr)
1732	(get-regspec-mode vreg)
1733	hard-reg-class-gpr-mode-invalid)))
1734	(cond
1735	(is-node
1736	(if (eq vreg :push)
1737	(if (and index-known-fixnum (<= index-known-fixnum (arch::target-max-64-bit-constant-index arch)))
1738	(! push-misc-ref-c-node src index-known-fixnum)
1739	(! push-misc-ref-node src unscaled-idx))
1740	(ensuring-node-target (target vreg)
1741	(if (and index-known-fixnum (<= index-known-fixnum (arch::target-max-64-bit-constant-index arch)))
1742	(! misc-ref-c-node target src index-known-fixnum)
1743	(! misc-ref-node target src unscaled-idx)))))
1744	(is-32-bit
1745	(if (and index-known-fixnum (<= index-known-fixnum (arch::target-max-32-bit-constant-index arch)))
1746	(cond ((eq type-keyword :single-float-vector)
1747	(with-fp-target () (fp-val :single-float)
1748	(if (and (eql vreg-class hard-reg-class-fpr)
1749	(eql vreg-mode hard-reg-class-fpr-mode-single))
1750	(setq fp-val vreg))
1751	(! misc-ref-c-single-float fp-val src index-known-fixnum)
1752	(if (eql vreg-class hard-reg-class-fpr)
1753	(<- fp-val)
1754	(ensuring-node-target (target vreg)
1755	(target-arch-case
1756	(:x8632 (x862-single->heap seg target fp-val))
1757	(:x8664 (! single->node target fp-val)))))))
1758	(t
1759	(with-additional-imm-reg ()
1760	(with-imm-target () temp
1761	(if is-signed
1762	(! misc-ref-c-s32 temp src index-known-fixnum)
1763	(! misc-ref-c-u32 temp src index-known-fixnum))
1764	(ensuring-node-target (target vreg)
1765	(if (eq type-keyword :simple-string)
1766	(! u32->char target temp)
1767	(target-arch-case
1768	(:x8632
1769	(if is-signed
1770	(x862-box-s32 seg target temp)
1771	(x862-box-u32 seg target temp)))
1772	(:x8664
1773	(! box-fixnum target temp)))))))))
1774	(with-imm-target () idx-reg
1775	(if index-known-fixnum
1776	(x862-absolute-natural seg idx-reg nil (+ (arch::target-misc-data-offset arch) (ash index-known-fixnum 2)))
1777	(! scale-32bit-misc-index idx-reg unscaled-idx))
1778	(cond ((eq type-keyword :single-float-vector)
1779	(with-fp-target () (fp-val :single-float)
1780	(if (and (eql vreg-class hard-reg-class-fpr)
1781	(eql vreg-mode hard-reg-class-fpr-mode-single))
1782	(setq fp-val vreg))
1783	(! misc-ref-single-float fp-val src idx-reg)
1784	(if (eq vreg-class hard-reg-class-fpr)
1785	(<- fp-val)
1786	(ensuring-node-target (target vreg)
1787	(target-arch-case
1788	(:x8632 (x862-single->heap seg target fp-val))
1789	(:x8664 (! single->node target fp-val)))))))
1790	(t
1791	(with-imm-target () temp
1792	(if is-signed
1793	(! misc-ref-s32 temp src idx-reg)
1794	(! misc-ref-u32 temp src idx-reg))
1795	(ensuring-node-target (target vreg)
1796	(if (eq type-keyword :simple-string)
1797	(! u32->char target temp)
1798	(target-arch-case
1799	(:x8632 (if is-signed
1800	(x862-box-s32 seg target temp)
1801	(x862-box-u32 seg target temp)))
1802	(:x8664 (! box-fixnum target temp)))))))))))
1803	(is-8-bit
1804	(with-imm-target () temp
1805	(if (and index-known-fixnum (<= index-known-fixnum (arch::target-max-8-bit-constant-index arch)))
1806	(if is-signed
1807	(! misc-ref-c-s8 temp src index-known-fixnum)
1808	(! misc-ref-c-u8 temp src index-known-fixnum))
1809	(with-additional-imm-reg ()
1810	(with-imm-target () idx-reg
1811	(if index-known-fixnum
1812	(x862-absolute-natural seg idx-reg nil (+ (arch::target-misc-data-offset arch) index-known-fixnum))
1813	(! scale-8bit-misc-index idx-reg unscaled-idx))
1814	(if is-signed
1815	(! misc-ref-s8 temp src idx-reg)
1816	(! misc-ref-u8 temp src idx-reg)))))
1817	(if (eq type-keyword :simple-string)
1818	(ensuring-node-target (target vreg)
1819	(! u32->char target temp))
1820	(if (and (= vreg-mode hard-reg-class-gpr-mode-u8)
1821	(eq type-keyword :unsigned-8-bit-vector))
1822	(x862-copy-register seg vreg temp)
1823	(ensuring-node-target (target vreg)
1824	(! box-fixnum target temp))))))
1825	(is-16-bit
1826	(with-imm-target () temp
1827	(ensuring-node-target (target vreg)
1828	(if (and index-known-fixnum
1829	(<= index-known-fixnum (arch::target-max-16-bit-constant-index arch)))
1830	(if is-signed
1831	(! misc-ref-c-s16 temp src index-known-fixnum)
1832	(! misc-ref-c-u16 temp src index-known-fixnum))
1833	(with-imm-target () idx-reg
1834	(if index-known-fixnum
1835	(x862-absolute-natural seg idx-reg nil (+ (arch::target-misc-data-offset arch) (ash index-known-fixnum 1)))
1836	(! scale-16bit-misc-index idx-reg unscaled-idx))
1837	(if is-signed
1838	(! misc-ref-s16 temp src idx-reg)
1839	(! misc-ref-u16 temp src idx-reg))))
1840	(! box-fixnum target temp))))
1841	;; Down to the dregs.
1842	(is-64-bit
1843	(case type-keyword
1844	(:double-float-vector
1845	(with-fp-target () (fp-val :double-float)
1846	(if (and (eql vreg-class hard-reg-class-fpr)
1847	(eql vreg-mode hard-reg-class-fpr-mode-double))
1848	(setq fp-val vreg))
1849	(if (and index-known-fixnum (<= index-known-fixnum (arch::target-max-64-bit-constant-index arch)))
1850	(! misc-ref-c-double-float fp-val src index-known-fixnum)
1851	(progn
1852	(if index-known-fixnum
1853	(x862-absolute-natural seg unscaled-idx nil (+ (arch::target-misc-data-offset arch) (ash index-known-fixnum 3))))
1854	(! misc-ref-double-float fp-val src unscaled-idx)))
1855	(if (eq vreg-class hard-reg-class-fpr)
1856	(<- fp-val)
1857	(ensuring-node-target (target vreg)
1858	(x862-double->heap seg target fp-val)))))
1859	((:signed-64-bit-vector :fixnum-vector)
1860	(ensuring-node-target (target vreg)
1861
1862	(with-imm-target () (s64-reg :s64)
1863	(if (and index-known-fixnum (<= index-known-fixnum (arch::target-max-64-bit-constant-index arch)))
1864	(! misc-ref-c-s64 s64-reg src index-known-fixnum)
1865	(progn
1866	(if index-known-fixnum
1867	(x862-absolute-natural seg unscaled-idx nil (+ (arch::target-misc-data-offset arch) (ash index-known-fixnum 3))))
1868	(! misc-ref-s64 s64-reg src unscaled-idx)))
1869	(if (eq type-keyword :fixnum-vector)
1870	(! box-fixnum target s64-reg)
1871	(x862-box-s64 seg target s64-reg)))))
1872	(t
1873	(with-imm-target () (u64-reg :u64)
1874	(if (eql vreg-mode hard-reg-class-gpr-mode-u64)
1875	(setq u64-reg vreg))
1876	(if (and index-known-fixnum (<= index-known-fixnum (arch::target-max-64-bit-constant-index arch)))
1877	(! misc-ref-c-u64 u64-reg src index-known-fixnum)
1878	(progn
1879	(if index-known-fixnum
1880	(x862-absolute-natural seg unscaled-idx nil (+ (arch::target-misc-data-offset arch) (ash index-known-fixnum 3))))
1881	(! misc-ref-u64 u64-reg src unscaled-idx)))
1882	(unless (eq u64-reg vreg)
1883	(ensuring-node-target (target vreg)
1884	(x862-box-u64 seg target u64-reg)))))))
1885	(t
1886	(unless is-1-bit
1887	(nx-error "~& unsupported vector type: ~s"
1888	type-keyword))
1889	(ensuring-node-target (target vreg)
1890	(if (and index-known-fixnum (<= index-known-fixnum (arch::target-max-1-bit-constant-index arch)))
1891	(! misc-ref-c-bit-fixnum target src index-known-fixnum)
1892	(with-imm-target () bitnum
1893	(if index-known-fixnum
1894	(x862-lri seg bitnum index-known-fixnum)
1895	(! scale-1bit-misc-index bitnum unscaled-idx))
1896	(! nref-bit-vector-fixnum target bitnum src))))))))
1897	(^)))
1898
1899
1900
1901	;;; safe = T means assume "vector" is miscobj, do bounds check.
1902	;;; safe = fixnum means check that subtag of vector = "safe" and do
1903	;;; bounds check.
1904	;;; safe = nil means crash&burn.
1905	;;; This mostly knows how to reference the elements of an immediate miscobj.
1906	(defun x862-vref (seg vreg xfer type-keyword vector index safe)
1907	(with-x86-local-vinsn-macros (seg vreg xfer)
1908	(when x862-full-safety
1909	(unless vreg (setq vreg x862-arg-z)))
1910	(if (null vreg)
1911	(progn
1912	(x862-form seg nil nil vector)
1913	(x862-form seg nil xfer index))
1914	(let* ((index-known-fixnum (acode-fixnum-form-p index))
1915	(unscaled-idx nil)
1916	(src nil))
1917	(if (or safe (not index-known-fixnum))
1918	(multiple-value-setq (src unscaled-idx)
1919	(x862-two-untargeted-reg-forms seg vector x862-arg-y index x862-arg-z))
1920	(setq src (x862-one-untargeted-reg-form seg vector x862-arg-z)))
1921	(when safe
1922	(if (typep safe 'fixnum)
1923	(! trap-unless-typecode= src safe))
1924	(unless index-known-fixnum
1925	(! trap-unless-fixnum unscaled-idx))
1926	(! check-misc-bound unscaled-idx src))
1927	(x862-vref1 seg vreg xfer type-keyword src unscaled-idx index-known-fixnum)))))
1928
1929
1930
1931	(defun x862-aset2 (seg vreg xfer array i j new safe type-keyword dim0 dim1)
1932	(target-arch-case
1933	(:x8632 (error "not for x8632 yet")))
1934	(with-x86-local-vinsn-macros (seg target)
1935	(let* ((i-known-fixnum (acode-fixnum-form-p i))
1936	(j-known-fixnum (acode-fixnum-form-p j))
1937	(arch (backend-target-arch target-backend))
1938	(is-node (member type-keyword (arch::target-gvector-types arch)))
1939	(constval (x862-constant-value-ok-for-type-keyword type-keyword new))
1940	(needs-memoization (and is-node (x862-acode-needs-memoization new)))
1941	(src)
1942	(unscaled-i)
1943	(unscaled-j)
1944	(val-reg (x862-target-reg-for-aset vreg type-keyword))
1945	(constidx
1946	(and dim0 dim1 i-known-fixnum j-known-fixnum
1947	(>= i-known-fixnum 0)
1948	(>= j-known-fixnum 0)
1949	(< i-known-fixnum dim0)
1950	(< j-known-fixnum dim1)
1951	(+ (* i-known-fixnum dim1) j-known-fixnum))))
1952	(progn
1953	(if constidx
1954	(multiple-value-setq (src val-reg)
1955	(x862-two-targeted-reg-forms seg array ($ x862-temp0) new val-reg))
1956	(multiple-value-setq (src unscaled-i unscaled-j val-reg)
1957	(if needs-memoization
1958	(progn
1959	(x862-four-targeted-reg-forms seg
1960	array ($ x862-temp0)
1961	i ($ x8664::arg_x)
1962	j ($ x862-arg-y)
1963	new val-reg)
1964	(values ($ x862-temp0) ($ x8664::arg_x) ($ x862-arg-y) ($ x862-arg-z)))
1965	(x862-four-untargeted-reg-forms seg
1966	array ($ x862-temp0)
1967	i ($ x8664::arg_x)
1968	j ($ x862-arg-y)
1969	new val-reg))))
1970	(let* ((available-backend-imm-temps available-backend-imm-temps))
1971	(when (and (= (hard-regspec-class val-reg) hard-reg-class-gpr)
1972	(logbitp (hard-regspec-value val-reg)
1973	backend-imm-temps))
1974	(use-imm-temp (hard-regspec-value val-reg)))
1975	(when safe
1976	(when (typep safe 'fixnum)
1977	(! trap-unless-simple-array-2
1978	src
1979	(dpb safe target::arrayH.flags-cell-subtag-byte
1980	(ash 1 $arh_simple_bit))
1981	(nx-error-for-simple-2d-array-type type-keyword)))
1982	(unless i-known-fixnum
1983	(! trap-unless-fixnum unscaled-i))
1984	(unless j-known-fixnum
1985	(! trap-unless-fixnum unscaled-j)))
1986	(with-imm-target () dim1
1987	(let* ((idx-reg ($ x862-arg-y)))
1988	(if constidx
1989	(if needs-memoization
1990	(x862-lri seg x862-arg-y (ash constidx x862-target-fixnum-shift)))
1991	(progn
1992	(if safe
1993	(! check-2d-bound dim1 unscaled-i unscaled-j src)
1994	(! 2d-dim1 dim1 src))
1995	(! 2d-unscaled-index idx-reg dim1 unscaled-i unscaled-j)))
1996	(let* ((v ($ x8664::arg_x)))
1997	(! array-data-vector-ref v src)
1998	(x862-vset1 seg vreg xfer type-keyword v idx-reg constidx val-reg (x862-unboxed-reg-for-aset seg type-keyword val-reg safe constval) constval needs-memoization)))))))))
1999
2000
2001	(defun x862-aset3 (seg vreg xfer array i j k new safe type-keyword dim0 dim1 dim2)
2002	(target-arch-case
2003	(:x8632 (error "not for x8632 yet")))
2004	(with-x86-local-vinsn-macros (seg target)
2005	(let* ((i-known-fixnum (acode-fixnum-form-p i))
2006	(j-known-fixnum (acode-fixnum-form-p j))
2007	(k-known-fixnum (acode-fixnum-form-p k))
2008	(arch (backend-target-arch target-backend))
2009	(is-node (member type-keyword (arch::target-gvector-types arch)))
2010	(constval (x862-constant-value-ok-for-type-keyword type-keyword new))
2011	(needs-memoization (and is-node (x862-acode-needs-memoization new)))
2012	(src)
2013	(unscaled-i)
2014	(unscaled-j)
2015	(unscaled-k)
2016	(val-reg (x862-target-reg-for-aset vreg type-keyword))
2017	(constidx
2018	(and dim0 dim1 dim2 i-known-fixnum j-known-fixnum k-known-fixnum
2019	(>= i-known-fixnum 0)
2020	(>= j-known-fixnum 0)
2021	(>= k-known-fixnum 0)
2022	(< i-known-fixnum dim0)
2023	(< j-known-fixnum dim1)
2024	(< k-known-fixnum dim2)
2025	(+ (* i-known-fixnum dim1 dim2)
2026	(* j-known-fixnum dim2)
2027	k-known-fixnum))))
2028	(progn
2029	(if constidx
2030	(multiple-value-setq (src val-reg)
2031	(x862-two-targeted-reg-forms seg array ($ x862-temp0) new val-reg))
2032	(progn
2033	(setq src ($ x8664::temp1)
2034	unscaled-i ($ x862-temp0)
2035	unscaled-j ($ x8664::arg_x)
2036	unscaled-k ($ x862-arg-y))
2037	(x862-push-register
2038	seg
2039	(x862-one-untargeted-reg-form seg array ($ x862-arg-z)))
2040	(x862-four-targeted-reg-forms seg
2041	i ($ x862-temp0)
2042	j ($ x8664::arg_x)
2043	k ($ x862-arg-y)
2044	new val-reg)
2045	(x862-pop-register seg src)))
2046	(let* ((available-backend-imm-temps available-backend-imm-temps))
2047	(when (and (= (hard-regspec-class val-reg) hard-reg-class-gpr)
2048	(logbitp (hard-regspec-value val-reg)
2049	backend-imm-temps))
2050	(use-imm-temp (hard-regspec-value val-reg)))
2051
2052	(when safe
2053	(when (typep safe 'fixnum)
2054	(! trap-unless-simple-array-3
2055	src
2056	(dpb safe target::arrayH.flags-cell-subtag-byte
2057	(ash 1 $arh_simple_bit))
2058	(nx-error-for-simple-3d-array-type type-keyword)))
2059	(unless i-known-fixnum
2060	(! trap-unless-fixnum unscaled-i))
2061	(unless j-known-fixnum
2062	(! trap-unless-fixnum unscaled-j))
2063	(unless k-known-fixnum
2064	(! trap-unless-fixnum unscaled-k)))
2065	(with-imm-target () dim1
2066	(with-imm-target (dim1) dim2
2067	(let* ((idx-reg ($ x862-arg-y)))
2068	(if constidx
2069	(when needs-memoization
2070	(x862-lri seg idx-reg (ash constidx x862-target-fixnum-shift)))
2071	(progn
2072	(if safe
2073	(! check-3d-bound dim1 dim2 unscaled-i unscaled-j unscaled-k src)
2074	(! 3d-dims dim1 dim2 src))
2075	(! 3d-unscaled-index idx-reg dim1 dim2 unscaled-i unscaled-j unscaled-k)))
2076	(let* ((v ($ x8664::arg_x)))
2077	(! array-data-vector-ref v src)
2078	(x862-vset1 seg vreg xfer type-keyword v idx-reg constidx val-reg (x862-unboxed-reg-for-aset seg type-keyword val-reg safe constval) constval needs-memoization))))))))))
2079
2080
2081	(defun x862-aref2 (seg vreg xfer array i j safe typekeyword &optional dim0 dim1)
2082	(target-arch-case
2083	(:x8632 (error "not for x8632 yet")))
2084	(with-x86-local-vinsn-macros (seg vreg xfer)
2085	(let* ((i-known-fixnum (acode-fixnum-form-p i))
2086	(j-known-fixnum (acode-fixnum-form-p j))
2087	(src)
2088	(unscaled-i)
2089	(unscaled-j)
2090	(constidx
2091	(and dim0 dim1 i-known-fixnum j-known-fixnum
2092	(>= i-known-fixnum 0)
2093	(>= j-known-fixnum 0)
2094	(< i-known-fixnum dim0)
2095	(< j-known-fixnum dim1)
2096	(+ (* i-known-fixnum dim1) j-known-fixnum))))
2097	(if constidx
2098	(setq src (x862-one-targeted-reg-form seg array ($ x862-arg-z)))
2099	(multiple-value-setq (src unscaled-i unscaled-j)
2100	(x862-three-untargeted-reg-forms seg
2101	array x8664::arg_x
2102	i x862-arg-y
2103	j x862-arg-z)))
2104	(when safe
2105	(when (typep safe 'fixnum)
2106	(! trap-unless-simple-array-2
2107	src
2108	(dpb safe target::arrayH.flags-cell-subtag-byte
2109	(ash 1 $arh_simple_bit))
2110	(nx-error-for-simple-2d-array-type typekeyword)))
2111	(unless i-known-fixnum
2112	(! trap-unless-fixnum unscaled-i))
2113	(unless j-known-fixnum
2114	(! trap-unless-fixnum unscaled-j)))
2115	(with-node-target (src) idx-reg
2116	(with-imm-target () dim1
2117	(unless constidx
2118	(if safe
2119	(! check-2d-bound dim1 unscaled-i unscaled-j src)
2120	(! 2d-dim1 dim1 src))
2121	(! 2d-unscaled-index idx-reg dim1 unscaled-i unscaled-j))
2122	(with-node-target (idx-reg) v
2123	(! array-data-vector-ref v src)
2124	(x862-vref1 seg vreg xfer typekeyword v idx-reg constidx)))))))
2125
2126	(defun x862-aref3 (seg vreg xfer array i j k safe typekeyword &optional dim0 dim1 dim2)
2127	(target-arch-case
2128	(:x8632 (error "not for x8632 yet")))
2129	(with-x86-local-vinsn-macros (seg vreg xfer)
2130	(let* ((i-known-fixnum (acode-fixnum-form-p i))
2131	(j-known-fixnum (acode-fixnum-form-p j))
2132	(k-known-fixnum (acode-fixnum-form-p k))
2133	(src)
2134	(unscaled-i)
2135	(unscaled-j)
2136	(unscaled-k)
2137	(constidx
2138	(and dim0 dim1 i-known-fixnum j-known-fixnum k-known-fixnum
2139	(>= i-known-fixnum 0)
2140	(>= j-known-fixnum 0)
2141	(>= k-known-fixnum 0)
2142	(< i-known-fixnum dim0)
2143	(< j-known-fixnum dim1)
2144	(< k-known-fixnum dim2)
2145	(+ (* i-known-fixnum dim1 dim2)
2146	(* j-known-fixnum dim2)
2147	k-known-fixnum))))
2148	(if constidx
2149	(setq src (x862-one-targeted-reg-form seg array ($ x862-arg-z)))
2150	(multiple-value-setq (src unscaled-i unscaled-j unscaled-k)
2151	(x862-four-untargeted-reg-forms seg
2152	array x862-temp0
2153	i x8664::arg_x
2154	j x862-arg-y
2155	k x862-arg-z)))
2156	(when safe
2157	(when (typep safe 'fixnum)
2158	(! trap-unless-simple-array-3
2159	src
2160	(dpb safe target::arrayH.flags-cell-subtag-byte
2161	(ash 1 $arh_simple_bit))
2162	(nx-error-for-simple-3d-array-type typekeyword)))
2163	(unless i-known-fixnum
2164	(! trap-unless-fixnum unscaled-i))
2165	(unless j-known-fixnum
2166	(! trap-unless-fixnum unscaled-j))
2167	(unless k-known-fixnum
2168	(! trap-unless-fixnum unscaled-k)))
2169	(with-node-target (src) idx-reg
2170	(with-imm-target () dim1
2171	(with-imm-target (dim1) dim2
2172	(unless constidx
2173	(if safe
2174	(! check-3d-bound dim1 dim2 unscaled-i unscaled-j unscaled-k src)
2175	(! 3d-dims dim1 dim2 src))
2176	(! 3d-unscaled-index idx-reg dim1 dim2 unscaled-i unscaled-j unscaled-k))))
2177	(with-node-target (idx-reg) v
2178	(! array-data-vector-ref v src)
2179	(x862-vref1 seg vreg xfer typekeyword v idx-reg constidx))))))
2180
2181
2182
2183	(defun x862-natural-vset (seg vreg xfer vector index value safe)
2184	(with-x86-local-vinsn-macros (seg vreg xfer)
2185	(let* ((index-known-fixnum (acode-fixnum-form-p index))
2186	(arch (backend-target-arch target-backend))
2187	(src nil)
2188	(unscaled-idx nil))
2189	(with-imm-target () (target :natural)
2190	(if (or safe (not index-known-fixnum))
2191	(multiple-value-setq (src unscaled-idx target)
2192	(x862-three-untargeted-reg-forms seg vector x862-arg-y index x862-arg-z value (or vreg target)))
2193	(multiple-value-setq (src target)
2194	(x862-two-untargeted-reg-forms seg vector x862-arg-y value (or vreg target))))
2195	(when safe
2196	(with-imm-temps (target) () ; Don't use target in type/bounds check
2197	(if (typep safe 'fixnum)
2198	(! trap-unless-typecode= src safe))
2199	(unless index-known-fixnum
2200	(! trap-unless-fixnum unscaled-idx))
2201	(! check-misc-bound unscaled-idx src)))
2202	(target-arch-case
2203
2204	(:x8664
2205	(if (and index-known-fixnum
2206	(<= index-known-fixnum (arch::target-max-64-bit-constant-index arch)))
2207	(! misc-set-c-u64 target src index-known-fixnum)
2208	(progn
2209	(if index-known-fixnum
2210	(x862-absolute-natural seg unscaled-idx nil (+ (arch::target-misc-data-offset arch) (ash index-known-fixnum 3))))
2211	(! misc-set-u64 target src unscaled-idx)))))
2212	(<- target) ; should be a no-op in this case
2213	(^)))))
2214
2215
2216	(defun x862-constant-value-ok-for-type-keyword (type-keyword form)
2217	(let* ((arch (backend-target-arch target-backend))
2218	(is-node (member type-keyword (arch::target-gvector-types arch))))
2219	(if is-node
2220	(cond ((eq form nx-nil)
2221	(target-nil-value))
2222	((eq form nx-t)
2223	(+ (target-nil-value) (arch::target-t-offset arch)))
2224	(t
2225	(let* ((fixval (acode-fixnum-form-p form)))
2226	(if fixval
2227	(ash fixval (arch::target-fixnum-shift arch))))))
2228	(if (and (acode-p form)
2229	(or (eq (acode-operator form) (%nx1-operator immediate))
2230	(eq (acode-operator form) (%nx1-operator fixnum))))
2231	(let* ((val (%cadr form))
2232
2233	(typep (cond ((eq type-keyword :signed-32-bit-vector)
2234	(typep val '(signed-byte 32)))
2235	((eq type-keyword :single-float-vector)
2236	(typep val 'short-float))
2237	((eq type-keyword :double-float-vector)
2238	(typep val 'double-float))
2239	((eq type-keyword :simple-string)
2240	(typep val 'base-char))
2241	((eq type-keyword :signed-8-bit-vector)
2242	(typep val '(signed-byte 8)))
2243	((eq type-keyword :unsigned-8-bit-vector)
2244	(typep val '(unsigned-byte 8)))
2245	((eq type-keyword :signed-16-bit-vector)
2246	(typep val '(signed-byte 16)))
2247	((eq type-keyword :unsigned-16-bit-vector)
2248	(typep val '(unsigned-byte 16)))
2249	((eq type-keyword :bit-vector)
2250	(typep val 'bit)))))
2251	(if typep val))))))
2252
2253	(defun x862-target-reg-for-aset (vreg type-keyword)
2254	(let* ((arch (backend-target-arch target-backend))
2255	(is-node (member type-keyword (arch::target-gvector-types arch)))
2256	(is-1-bit (member type-keyword (arch::target-1-bit-ivector-types arch)))
2257	(is-8-bit (member type-keyword (arch::target-8-bit-ivector-types arch)))
2258	(is-16-bit (member type-keyword (arch::target-16-bit-ivector-types arch)))
2259	(is-32-bit (member type-keyword (arch::target-32-bit-ivector-types arch)))
2260	(is-64-bit (member type-keyword (arch::target-64-bit-ivector-types arch)))
2261	(is-signed (member type-keyword '(:signed-8-bit-vector :signed-16-bit-vector :signed-32-bit-vector :signed-64-bit-vector :fixnum-vector)))
2262	(vreg-class (if (and vreg (not (eq vreg :push))) (hard-regspec-class vreg)))
2263	(vreg-mode (if (or (eql vreg-class hard-reg-class-gpr)
2264	(eql vreg-class hard-reg-class-fpr))
2265	(get-regspec-mode vreg)))
2266	(next-imm-target (available-imm-temp available-backend-imm-temps))
2267	(next-fp-target (available-fp-temp available-backend-fp-temps))
2268	(acc (make-wired-lreg x862-arg-z)))
2269	(cond ((or is-node
2270	(eq vreg :push)
2271	is-1-bit
2272	(eq type-keyword :simple-string)
2273	(eq type-keyword :fixnum-vector)
2274	(and (eql vreg-class hard-reg-class-gpr)
2275	(eql vreg-mode hard-reg-class-gpr-mode-node)))
2276	acc)
2277	;; If there's no vreg - if we're setting for effect only, and
2278	;; not for value - we can target an unboxed register directly.
2279	;; Usually.
2280	((null vreg)
2281	(cond (is-64-bit
2282	(if (eq type-keyword :double-float-vector)
2283	(make-unwired-lreg next-fp-target :mode hard-reg-class-fpr-mode-double)
2284	(make-unwired-lreg next-imm-target :mode (if is-signed hard-reg-class-gpr-mode-s64 hard-reg-class-gpr-mode-u64))))
2285	(is-32-bit
2286	(if (eq type-keyword :single-float-vector)
2287	(make-unwired-lreg next-fp-target :mode hard-reg-class-fpr-mode-single)
2288	(make-unwired-lreg next-imm-target :mode (if is-signed hard-reg-class-gpr-mode-s32 hard-reg-class-gpr-mode-u32))))
2289	(is-16-bit
2290	(make-unwired-lreg next-imm-target :mode (if is-signed hard-reg-class-gpr-mode-s16 hard-reg-class-gpr-mode-u16)))
2291	(is-8-bit
2292	(make-unwired-lreg next-imm-target :mode (if is-signed hard-reg-class-gpr-mode-s8 hard-reg-class-gpr-mode-u8)))
2293	(t "Bug: can't determine operand size for ~s" type-keyword)))
2294	;; Vreg is non-null. We might be able to use it directly.
2295	(t
2296	(let* ((lreg (if vreg-mode
2297	(make-unwired-lreg (lreg-value vreg)))))
2298	(if
2299	(cond
2300	(is-64-bit
2301	(if (eq type-keyword :double-float-vector)
2302	(and (eql vreg-class hard-reg-class-fpr)
2303	(eql vreg-mode hard-reg-class-fpr-mode-double))
2304	(if is-signed
2305	(and (eql vreg-class hard-reg-class-gpr)
2306	(eql vreg-mode hard-reg-class-gpr-mode-s64))
2307	(and (eql vreg-class hard-reg-class-gpr)
2308	(eql vreg-mode hard-reg-class-gpr-mode-u64)))))
2309	(is-32-bit
2310	(if (eq type-keyword :single-float-vector)
2311	(and (eql vreg-class hard-reg-class-fpr)
2312	(eql vreg-mode hard-reg-class-fpr-mode-single))
2313	(if is-signed
2314	(and (eql vreg-class hard-reg-class-gpr)
2315	(or (eql vreg-mode hard-reg-class-gpr-mode-s32)
2316	(eql vreg-mode hard-reg-class-gpr-mode-s64)))
2317	(and (eql vreg-class hard-reg-class-gpr)
2318	(or (eql vreg-mode hard-reg-class-gpr-mode-u32)
2319	(eql vreg-mode hard-reg-class-gpr-mode-u64)
2320	(eql vreg-mode hard-reg-class-gpr-mode-s64))))))
2321	(is-16-bit
2322	(if is-signed
2323	(and (eql vreg-class hard-reg-class-gpr)
2324	(or (eql vreg-mode hard-reg-class-gpr-mode-s16)
2325	(eql vreg-mode hard-reg-class-gpr-mode-s32)
2326	(eql vreg-mode hard-reg-class-gpr-mode-s64)))
2327	(and (eql vreg-class hard-reg-class-gpr)
2328	(or (eql vreg-mode hard-reg-class-gpr-mode-u16)
2329	(eql vreg-mode hard-reg-class-gpr-mode-u32)
2330	(eql vreg-mode hard-reg-class-gpr-mode-u64)
2331	(eql vreg-mode hard-reg-class-gpr-mode-s32)
2332	(eql vreg-mode hard-reg-class-gpr-mode-s64)))))
2333	(t
2334	(if is-signed
2335	(and (eql vreg-class hard-reg-class-gpr)
2336	(or (eql vreg-mode hard-reg-class-gpr-mode-s8)
2337	(eql vreg-mode hard-reg-class-gpr-mode-s16)
2338	(eql vreg-mode hard-reg-class-gpr-mode-s32)
2339	(eql vreg-mode hard-reg-class-gpr-mode-s64)))
2340	(and (eql vreg-class hard-reg-class-gpr)
2341	(or (eql vreg-mode hard-reg-class-gpr-mode-u8)
2342	(eql vreg-mode hard-reg-class-gpr-mode-u16)
2343	(eql vreg-mode hard-reg-class-gpr-mode-u32)
2344	(eql vreg-mode hard-reg-class-gpr-mode-u64)
2345	(eql vreg-mode hard-reg-class-gpr-mode-s16)
2346	(eql vreg-mode hard-reg-class-gpr-mode-s32)
2347	(eql vreg-mode hard-reg-class-gpr-mode-s64))))))
2348	lreg
2349	acc))))))
2350
2351	(defun x862-unboxed-reg-for-aset (seg type-keyword result-reg safe constval)
2352	(with-x86-local-vinsn-macros (seg)
2353	(let* ((arch (backend-target-arch target-backend))
2354	(is-node (member type-keyword (arch::target-gvector-types arch)))
2355	(is-8-bit (member type-keyword (arch::target-8-bit-ivector-types arch)))
2356	(is-16-bit (member type-keyword (arch::target-16-bit-ivector-types arch)))
2357	(is-32-bit (member type-keyword (arch::target-32-bit-ivector-types arch)))
2358	(is-64-bit (member type-keyword (arch::target-64-bit-ivector-types arch)))
2359	(is-signed (member type-keyword '(:signed-8-bit-vector :signed-16-bit-vector :signed-32-bit-vector :signed-64-bit-vector :fixnum-vector)))
2360	(result-is-node-gpr (and (eql (hard-regspec-class result-reg)
2361	hard-reg-class-gpr)
2362	(eql (get-regspec-mode result-reg)
2363	hard-reg-class-gpr-mode-node)))
2364	(next-imm-target (available-imm-temp available-backend-imm-temps))
2365	(next-fp-target (available-fp-temp available-backend-fp-temps)))
2366	(if (or is-node (not result-is-node-gpr))
2367	result-reg
2368	(cond (is-64-bit
2369	(if (eq type-keyword :double-float-vector)
2370	(let* ((reg (make-unwired-lreg next-fp-target :mode hard-reg-class-fpr-mode-double)))
2371	(if safe
2372	(! get-double? reg result-reg)
2373	(! get-double reg result-reg))
2374	reg)
2375	(if is-signed
2376	(let* ((reg (make-unwired-lreg next-imm-target :mode hard-reg-class-gpr-mode-s64)))
2377	(if (eq type-keyword :fixnum-vector)
2378	(progn
2379	(when safe
2380	(! trap-unless-fixnum result-reg))
2381	(! fixnum->signed-natural reg result-reg))
2382	(! unbox-s64 reg result-reg))
2383	reg)
2384	(let* ((reg (make-unwired-lreg next-imm-target :mode hard-reg-class-gpr-mode-u64)))
2385	(! unbox-u64 reg result-reg)
2386	reg))))
2387	(is-32-bit
2388	;; Generally better to use a GPR for the :SINGLE-FLOAT-VECTOR
2389	;; case here.
2390	(if is-signed
2391	(let* ((reg (make-unwired-lreg next-imm-target :mode hard-reg-class-gpr-mode-s32)))
2392	(if (eq type-keyword :fixnum-vector)
2393	(progn
2394	(when safe
2395	(! trap-unless-fixnum result-reg))
2396	(! fixnum->signed-natural reg result-reg))
2397	(! unbox-s32 reg result-reg))
2398	reg)
2399	(let* ((reg (make-unwired-lreg next-imm-target :mode hard-reg-class-gpr-mode-u32)))
2400	(cond ((eq type-keyword :simple-string)
2401	(if (characterp constval)
2402	(x862-lri seg reg (char-code constval))
2403	(! unbox-base-char reg result-reg)))
2404	((eq type-keyword :single-float-vector)
2405	(if (typep constval 'single-float)
2406	(x862-lri seg reg (single-float-bits constval))
2407	(progn
2408	(when safe
2409	(! trap-unless-single-float result-reg))
2410	(! single-float-bits reg result-reg))))
2411	(t
2412	(if (typep constval '(unsigned-byte 32))
2413	(x862-lri seg reg constval)
2414	(if x862-reckless
2415	(target-arch-case
2416	(:x8632 (! unbox-u32 reg result-reg))
2417	(:x8664 (! %unbox-u32 reg result-reg)))
2418	(! unbox-u32 reg result-reg)))))
2419	reg)))
2420	(is-16-bit
2421	(if is-signed
2422	(let* ((reg (make-unwired-lreg next-imm-target :mode hard-reg-class-gpr-mode-s16)))
2423	(if (typep constval '(signed-byte 16))
2424	(x862-lri seg reg constval)
2425	(if x862-reckless
2426	(! %unbox-s16 reg result-reg)
2427	(! unbox-s16 reg result-reg)))
2428	reg)
2429	(let* ((reg (make-unwired-lreg next-imm-target :mode hard-reg-class-gpr-mode-u16)))
2430	(if (typep constval '(unsigned-byte 16))
2431	(x862-lri seg reg constval)
2432	(if x862-reckless
2433	(! %unbox-u16 reg result-reg)
2434	(! unbox-u16 reg result-reg)))
2435	reg)))
2436	(is-8-bit
2437	(if is-signed
2438	(let* ((reg (make-unwired-lreg next-imm-target :mode hard-reg-class-gpr-mode-s8)))
2439	(if (typep constval '(signed-byte 8))
2440	(x862-lri seg reg constval)
2441	(if x862-reckless
2442	(! %unbox-s8 reg result-reg)
2443	(! unbox-s8 reg result-reg)))
2444	reg)
2445	(let* ((reg (make-unwired-lreg next-imm-target :mode hard-reg-class-gpr-mode-u8)))
2446	(if (typep constval '(unsigned-byte 8))
2447	(x862-lri seg reg constval)
2448	(if x862-reckless
2449	(! %unbox-u8 reg result-reg)
2450	(! unbox-u8 reg result-reg)))
2451	reg)))
2452	(t
2453	(let* ((reg result-reg))
2454	(unless (typep constval 'bit)
2455	(when safe
2456	(! trap-unless-bit reg )))
2457	reg)))))))
2458
2459
2460	;;; xxx
2461	(defun x862-vset1 (seg vreg xfer type-keyword src unscaled-idx index-known-fixnum val-reg unboxed-val-reg constval node-value-needs-memoization)
2462	(with-x86-local-vinsn-macros (seg vreg xfer)
2463	(let* ((arch (backend-target-arch target-backend))
2464	(is-node (member type-keyword (arch::target-gvector-types arch)))
2465	(is-1-bit (member type-keyword (arch::target-1-bit-ivector-types arch)))
2466	(is-8-bit (member type-keyword (arch::target-8-bit-ivector-types arch)))
2467	(is-16-bit (member type-keyword (arch::target-16-bit-ivector-types arch)))
2468	(is-32-bit (member type-keyword (arch::target-32-bit-ivector-types arch)))
2469	(is-64-bit (member type-keyword (arch::target-64-bit-ivector-types arch)))
2470	(is-signed (member type-keyword '(:signed-8-bit-vector :signed-16-bit-vector :signed-32-bit-vector :signed-64-bit-vector :fixnum-vector))))
2471	(cond ((and is-node node-value-needs-memoization)
2472	(unless (and (eql (hard-regspec-value src) (target-arch-case
2473	(:x8632 x8632::temp0)
2474	(:x8664 x8664::arg_x)))
2475	(eql (hard-regspec-value unscaled-idx) x862-arg-y)
2476	(eql (hard-regspec-value val-reg) x862-arg-z))
2477	(compiler-bug "Bug: invalid register targeting for gvset: ~s" (list src unscaled-idx val-reg)))
2478	(! call-subprim-3 val-reg (subprim-name->offset '.SPgvset) src unscaled-idx val-reg))
2479	(is-node
2480	(if (and index-known-fixnum (<= index-known-fixnum
2481	(target-word-size-case
2482	(32 (arch::target-max-32-bit-constant-index arch))
2483	(64 (arch::target-max-64-bit-constant-index arch)))))
2484	(if (typep constval '(signed-byte 32))
2485	(! misc-set-immediate-c-node constval src index-known-fixnum)
2486	(! misc-set-c-node val-reg src index-known-fixnum))
2487	(progn
2488	(if index-known-fixnum
2489	(x862-absolute-natural seg unscaled-idx nil (+ (arch::target-misc-data-offset arch) (ash index-known-fixnum x862-target-node-shift))))
2490	(if (typep constval '(signed-byte 32))
2491	(! misc-set-immediate-node constval src unscaled-idx)
2492	(! misc-set-node val-reg src unscaled-idx)))))
2493	(t
2494	(with-additional-imm-reg (src unscaled-idx val-reg)
2495	(with-imm-target (unboxed-val-reg) scaled-idx
2496	(cond
2497	(is-64-bit
2498	(if (and index-known-fixnum
2499	(<= index-known-fixnum
2500	(arch::target-max-64-bit-constant-index arch)))
2501	(if (eq type-keyword :double-float-vector)
2502	(! misc-set-c-double-float unboxed-val-reg src index-known-fixnum)
2503	(if is-signed
2504	(! misc-set-c-s64 unboxed-val-reg src index-known-fixnum)
2505	(! misc-set-c-u64 unboxed-val-reg src index-known-fixnum)))
2506	(progn
2507	(if index-known-fixnum
2508	(x862-absolute-natural seg unscaled-idx nil (+ (arch::target-misc-dfloat-offset arch) (ash index-known-fixnum 3))))
2509	(if (eq type-keyword :double-float-vector)
2510	(! misc-set-double-float unboxed-val-reg src unscaled-idx)
2511	(if is-signed
2512	(! misc-set-s64 unboxed-val-reg src unscaled-idx)
2513	(! misc-set-u64 unboxed-val-reg src unscaled-idx))))))
2514	(is-32-bit
2515	(if (and index-known-fixnum
2516	(<= index-known-fixnum
2517	(arch::target-max-32-bit-constant-index arch)))
2518	(if (eq type-keyword :single-float-vector)
2519	(if (eq (hard-regspec-class unboxed-val-reg)
2520	hard-reg-class-fpr)
2521	(! misc-set-c-single-float unboxed-val-reg src index-known-fixnum)
2522	(! misc-set-c-u32 unboxed-val-reg src index-known-fixnum))
2523	(if is-signed
2524	(! misc-set-c-s32 unboxed-val-reg src index-known-fixnum)
2525	(! misc-set-c-u32 unboxed-val-reg src index-known-fixnum)))
2526	(progn
2527	(if index-known-fixnum
2528	(x862-absolute-natural seg scaled-idx nil (+ (arch::target-misc-data-offset arch) (ash index-known-fixnum 2)))
2529	(! scale-32bit-misc-index scaled-idx unscaled-idx))
2530	(if (and (eq type-keyword :single-float-vector)
2531	(eql (hard-regspec-class unboxed-val-reg)
2532	hard-reg-class-fpr))
2533	(! misc-set-single-float unboxed-val-reg src scaled-idx)
2534	(if is-signed
2535	(! misc-set-s32 unboxed-val-reg src scaled-idx)
2536	(! misc-set-u32 unboxed-val-reg src scaled-idx))))))
2537	(is-16-bit
2538	(if (and index-known-fixnum
2539	(<= index-known-fixnum
2540	(arch::target-max-16-bit-constant-index arch)))
2541	(if is-signed
2542	(! misc-set-c-s16 unboxed-val-reg src index-known-fixnum)
2543	(! misc-set-c-u16 unboxed-val-reg src index-known-fixnum))
2544	(progn
2545	(if index-known-fixnum
2546	(x862-absolute-natural seg scaled-idx nil (+ (arch::target-misc-data-offset arch) (ash index-known-fixnum 1)))
2547	(! scale-16bit-misc-index scaled-idx unscaled-idx))
2548	(if is-signed
2549	(! misc-set-s16 unboxed-val-reg src scaled-idx)
2550	(! misc-set-u16 unboxed-val-reg src scaled-idx)))))
2551	(is-8-bit
2552	(if (and index-known-fixnum
2553	(<= index-known-fixnum
2554	(arch::target-max-8-bit-constant-index arch)))
2555	(if is-signed
2556	(! misc-set-c-s8 unboxed-val-reg src index-known-fixnum)
2557	(! misc-set-c-u8 unboxed-val-reg src index-known-fixnum))
2558	(progn
2559	(if index-known-fixnum
2560	(x862-absolute-natural seg scaled-idx nil (+ (arch::target-misc-data-offset arch) index-known-fixnum))
2561	(! scale-8bit-misc-index scaled-idx unscaled-idx))
2562	(if is-signed
2563	(! misc-set-s8 unboxed-val-reg src scaled-idx)
2564	(! misc-set-u8 unboxed-val-reg src scaled-idx)))))
2565	(is-1-bit
2566	(if (and index-known-fixnum (<= index-known-fixnum (arch::target-max-1-bit-constant-index arch)))
2567	(if constval
2568	(if (zerop constval)
2569	(! set-constant-bit-to-zero src index-known-fixnum)
2570	(! set-constant-bit-to-one src index-known-fixnum))
2571	(progn
2572	(! set-constant-bit-to-variable-value src index-known-fixnum val-reg)))
2573	(progn
2574	(if index-known-fixnum
2575	(x862-lri seg scaled-idx index-known-fixnum)
2576	(! scale-1bit-misc-index scaled-idx unscaled-idx))
2577	(if constval
2578	(if (zerop constval)
2579	(! nset-variable-bit-to-zero src scaled-idx)
2580	(! nset-variable-bit-to-one src scaled-idx))
2581	(progn
2582	(! nset-variable-bit-to-variable-value src scaled-idx val-reg)))))))))))
2583	(when (and vreg val-reg) (<- val-reg))
2584	(^))))
2585
2586
2587	(defun x862-code-coverage-entry (seg note)
2588	(let* ((afunc x862-cur-afunc))
2589	(setf (afunc-bits afunc) (%ilogior (afunc-bits afunc) (ash 1 $fbitccoverage)))
2590	(with-x86-local-vinsn-macros (seg)
2591	(let* ((ccreg ($ x8664::arg_x)))
2592	(! vpush-register ccreg)
2593	(! ref-constant ccreg (x86-immediate-label note))
2594	(! misc-set-immediate-c-node 0 ccreg 1)
2595	(! vpop-register ccreg)))))
2596
2597	(defx862 x862-with-code-note with-code-note (seg vreg xfer note form &aux val)
2598	(when record-pc-mapping
2599	(append-dll-node (setf (code-note-start-pc note) (make-vinsn-label nil)) seg))
2600	(when compile-code-coverage
2601	(with-x86-local-vinsn-macros (seg)
2602	(x862-store-immediate seg note x862-temp0)
2603	(! misc-set-immediate-c-node 0 x862-temp0 1)))
2604	(setq val (x862-form seg vreg xfer form))
2605	(when record-pc-mapping
2606	(append-dll-node (setf (code-note-end-pc note) (make-vinsn-label nil)) seg))
2607	val)
2608
2609	(defun x862-with-dynamic-extent-code-note (seg curstack note form &aux val)
2610	;; This assumes x862-dynamic-extent-form will actually generate code. The caller
2611	;; must check for that.
2612	(when record-pc-mapping
2613	(append-dll-node (setf (code-note-start-pc note) (make-vinsn-label nil)) seg))
2614	(when compile-code-coverage
2615	(with-x86-local-vinsn-macros (seg)
2616	(x862-store-immediate seg note x862-temp0)
2617	(! misc-set-immediate-c-node 0 x862-temp0 1)))
2618	(setq val (x862-dynamic-extent-form seg curstack form))
2619	#+debug 0 (assert (not (eq val form)))
2620	(when record-pc-mapping
2621	(append-dll-node (setf (code-note-end-pc note) (make-vinsn-label nil)) seg))
2622	val)
2623
2624
2625	(defun x862-vset (seg vreg xfer type-keyword vector index value safe)
2626	(with-x86-local-vinsn-macros (seg)
2627	(let* ((arch (backend-target-arch target-backend))
2628	(is-node (member type-keyword (arch::target-gvector-types arch)))
2629	(constval (x862-constant-value-ok-for-type-keyword type-keyword value))
2630	(needs-memoization (and is-node (x862-acode-needs-memoization value)))
2631	(index-known-fixnum (acode-fixnum-form-p index)))
2632	(let* ((src (target-arch-case
2633	(:x8632 ($ x8632::temp0))
2634	(:x8664 ($ x8664::arg_x))))
2635	(unscaled-idx ($ x862-arg-y))
2636	(result-reg ($ x862-arg-z)))
2637	(cond (needs-memoization
2638	(x862-three-targeted-reg-forms seg
2639	vector src
2640	index unscaled-idx
2641	value result-reg))
2642	(t
2643	(setq result-reg (x862-target-reg-for-aset vreg type-keyword))
2644	(target-arch-case
2645	(:x8632
2646	(with-node-temps (src) ()
2647	(x862-three-targeted-reg-forms seg
2648	vector src
2649	index unscaled-idx
2650	value result-reg)))
2651	(:x8664
2652	(x862-three-targeted-reg-forms seg
2653	vector src
2654	index unscaled-idx
2655	value result-reg)))))
2656	(when safe
2657	(let* ((available-backend-imm-temps available-backend-imm-temps)
2658	(value (if (eql (hard-regspec-class result-reg)
2659	hard-reg-class-gpr)
2660	(hard-regspec-value result-reg)))
2661	(result-is-imm nil))
2662	(when (and value (logbitp value available-backend-imm-temps))
2663	(setq available-backend-imm-temps (bitclr value available-backend-imm-temps))
2664	(setq result-is-imm t))
2665	(if (typep safe 'fixnum)
2666	(if result-is-imm
2667	(with-additional-imm-reg (src safe)
2668	(! trap-unless-typecode= src safe))
2669	(! trap-unless-typecode= src safe)))
2670	(unless index-known-fixnum
2671	(! trap-unless-fixnum unscaled-idx))
2672	(if result-is-imm
2673	(with-additional-imm-reg (unscaled-idx src)
2674	(! check-misc-bound unscaled-idx src))
2675	(! check-misc-bound unscaled-idx src))))
2676	(x862-vset1 seg vreg xfer type-keyword src unscaled-idx index-known-fixnum result-reg (x862-unboxed-reg-for-aset seg type-keyword result-reg safe constval) constval needs-memoization)))))
2677
2678
2679
2680	(defun x862-tail-call-alias (immref sym &optional arglist)
2681	(let ((alias (cdr (assq sym x862-tail-call-aliases))))
2682	(if (and alias (or (null arglist) (eq (+ (length (car arglist)) (length (cadr arglist))) (cdr alias))))
2683	(make-acode (%nx1-operator immediate) (car alias))
2684	immref)))
2685
2686	;;; If BODY is essentially an APPLY involving an &rest arg, try to avoid
2687	;;; consing it.
2688	(defun x862-eliminate-&rest (body rest key-p auxen rest-values)
2689	(when (and rest (not key-p) (not (cadr auxen)) rest-values)
2690	(when (eq (logand (the fixnum (nx-var-bits rest))
2691	(logior $vsetqmask (ash -1 $vbitspecial)
2692	(ash 1 $vbitclosed) (ash 1 $vbitsetq) (ash 1 $vbitcloseddownward)))
2693	0) ; Nothing but simple references
2694	(do* ()
2695	((not (acode-p body)))
2696	(let* ((op (acode-operator body)))
2697	(if (or (eq op (%nx1-operator lexical-function-call))
2698	(eq op (%nx1-operator call)))
2699	(destructuring-bind (fn-form (stack-args reg-args) &optional spread-p) (%cdr body)
2700	(unless (and (eq spread-p t)
2701	(eq (x862-lexical-reference-p (%car reg-args)) rest))
2702	(return nil))
2703	(flet ((independent-of-all-values (form)
2704	(setq form (acode-unwrapped-form-value form))
2705	(or (x86-constant-form-p form)
2706	(let* ((lexref (x862-lexical-reference-p form)))
2707	(and lexref
2708	(neq lexref rest)
2709	(dolist (val rest-values t)
2710	(unless (x862-var-not-set-by-form-p lexref val)
2711	(return))))))))
2712	(unless (or (eq op (%nx1-operator lexical-function-call))
2713	(independent-of-all-values fn-form))
2714	(return nil))
2715	(if (dolist (s stack-args t)
2716	(unless (independent-of-all-values s)
2717	(return nil)))
2718	(let* ((arglist (append stack-args rest-values)))
2719	(return
2720	(make-acode op
2721	fn-form
2722	(if (<= (length arglist) x862-target-num-arg-regs)
2723	(list nil (reverse arglist))
2724	(list (butlast arglist x862-target-num-arg-regs)
2725	(reverse (last arglist x862-target-num-arg-regs))))
2726	nil)))
2727	(return nil))))
2728	(if (eq op (%nx1-operator local-block))
2729	(setq body (%cadr body))
2730	(if (and (eq op (%nx1-operator if))
2731	(eq (x862-lexical-reference-p (%cadr body)) rest))
2732	(setq body (%caddr body))
2733	(return nil)))))))))
2734
2735	(defun x862-call-fn (seg vreg xfer fn arglist spread-p)
2736	(with-x86-local-vinsn-macros (seg vreg xfer)
2737	(when spread-p
2738	(destructuring-bind (stack-args reg-args) arglist
2739	(when (and (null (cdr reg-args))
2740	(nx-null (acode-unwrapped-form-value (car reg-args))))
2741	(setq spread-p nil)
2742	(let* ((nargs (length stack-args)))
2743	(declare (fixnum nargs))
2744	(if (<= nargs x862-target-num-arg-regs)
2745	(setq arglist (list nil (reverse stack-args)))
2746	(setq arglist (list (butlast stack-args x862-target-num-arg-regs) (reverse (last stack-args x862-target-num-arg-regs)))))))))
2747	(let* ((lexref (x862-lexical-reference-p fn))
2748	(simple-case (or (fixnump fn)
2749	(typep fn 'lreg)
2750	(x862-immediate-function-p fn)
2751	(and
2752	lexref
2753	(not spread-p)
2754	(flet ((all-simple (args)
2755	(dolist (arg args t)
2756	(when (and arg (not (x862-var-not-set-by-form-p lexref arg)))
2757	(return)))))
2758	(and (all-simple (car arglist))
2759	(all-simple (cadr arglist))
2760	(setq fn (var-ea lexref)))))))
2761	(cstack x862-cstack)
2762	(top x862-top-vstack-lcell)
2763	(vstack x862-vstack))
2764	(setq xfer (or xfer 0))
2765	(when (and (eq xfer $backend-return)
2766	(eq 0 x862-undo-count)
2767	(acode-p fn)
2768	(eq (acode-operator fn) (%nx1-operator immediate))
2769	(symbolp (cadr fn)))
2770	(setq fn (x862-tail-call-alias fn (%cadr fn) arglist)))
2771
2772	(if (and (eq xfer $backend-return) (not (x862-tailcallok xfer)))
2773	(progn
2774	(x862-call-fn seg vreg $backend-mvpass fn arglist spread-p)
2775	(x862-set-vstack (%i+ (if simple-case 0 x862-target-node-size) vstack))
2776	(setq x862-cstack cstack)
2777	(let ((x862-returning-values t)) (x862-do-return seg)))
2778	(let* ((mv-p (x862-mv-p xfer))
2779	(mv-return-label (if (and mv-p
2780	(not (x862-tailcallok xfer)))
2781	(backend-get-next-label))))
2782	(unless simple-case
2783	(x862-vpush-register seg (x862-one-untargeted-reg-form seg fn x862-arg-z))
2784	(setq fn (x862-vloc-ea vstack)))
2785	(x862-invoke-fn seg fn (x862-arglist seg arglist mv-return-label) spread-p xfer mv-return-label)
2786	(if (and (logbitp $backend-mvpass-bit xfer)
2787	(not simple-case))
2788	(progn
2789	(! save-values)
2790	(! vstack-discard 1)
2791	(x862-set-nargs seg 0)
2792	(! recover-values))
2793	(unless (or mv-p simple-case)
2794	(! vstack-discard 1)))
2795	(x862-set-vstack vstack)
2796	(setq x862-top-vstack-lcell top)
2797	(setq x862-cstack cstack)
2798	(when (or (logbitp $backend-mvpass-bit xfer) (not mv-p))
2799	(<- x862-arg-z)
2800	(x862-branch seg (logand (lognot $backend-mvpass-mask) xfer)))))
2801	nil)))
2802
2803	(defun x862-restore-full-lisp-context (seg)
2804	(with-x86-local-vinsn-macros (seg)
2805	(! restore-full-lisp-context)))
2806
2807	(defun x862-emit-aligned-label (seg labelnum)
2808	(with-x86-local-vinsn-macros (seg)
2809	(! emit-aligned-label (aref backend-labels labelnum))
2810	(@ labelnum)
2811	(target-arch-case
2812	(:x8632
2813	(! recover-fn))
2814	(:x8664
2815	(! recover-fn-from-rip)))))
2816
2817
2818	(defun x862-call-symbol (seg jump-p)
2819	(with-x86-local-vinsn-macros (seg)
2820	(if jump-p
2821	(! jump-known-symbol)
2822	(! call-known-symbol x862-arg-z))))
2823
2824	;;; Nargs = nil -> multiple-value case.
2825	(defun x862-invoke-fn (seg fn nargs spread-p xfer &optional mvpass-label)
2826	(with-x86-local-vinsn-macros (seg)
2827	(let* ((f-op (acode-unwrapped-form-value fn))
2828	(immp (and (consp f-op)
2829	(eq (%car f-op) (%nx1-operator immediate))))
2830	(symp (and immp (symbolp (%cadr f-op))))
2831	(label-p (and (fixnump fn)
2832	(locally (declare (fixnum fn))
2833	(and (= fn -2) (- fn)))))
2834	(tail-p (eq xfer $backend-return))
2835	(func (if (consp f-op) (%cadr f-op)))
2836	(a-reg nil)
2837	(lfunp (and (acode-p f-op)
2838	(eq (acode-operator f-op) (%nx1-operator simple-function))))
2839	(expression-p (or (typep fn 'lreg) (and (fixnump fn) (not label-p))))
2840	(callable (or symp lfunp label-p))
2841	(destreg (if symp ($ x862-fname) (unless label-p ($ x862-temp0))))
2842	(alternate-tail-call
2843	(and tail-p label-p x862-tail-label (eql nargs x862-tail-nargs) (not spread-p))))
2844	(when expression-p
2845	;;Have to do this before spread args, since might be vsp-relative.
2846	(if nargs
2847	(x862-do-lexical-reference seg destreg fn)
2848	(x862-copy-register seg destreg fn)))
2849	(if (or symp lfunp)
2850	(setq func (if symp
2851	(x862-symbol-entry-locative func)
2852	(x862-afunc-lfun-ref func))
2853	a-reg (x862-register-constant-p func)))
2854	(when tail-p
2855	#-no-compiler-bugs
2856	(unless (or immp symp lfunp (typep fn 'lreg) (fixnump fn)) (compiler-bug "Well, well, well. How could this have happened ?"))
2857	(when a-reg
2858	(x862-copy-register seg destreg a-reg))
2859	(unless spread-p
2860	(unless alternate-tail-call
2861	(x862-restore-nvrs seg x862-register-restore-ea x862-register-restore-count (and nargs (<= nargs x862-target-num-arg-regs))))))
2862	(if spread-p
2863	(progn
2864	(x862-set-nargs seg (%i- nargs 1))
2865	; .SPspread-lexpr-z & .SPspreadargz preserve temp1
2866	(target-arch-case
2867	(:x8632
2868	(! save-node-register-to-spill-area x862-temp0)))
2869	(if (eq spread-p 0)
2870	(! spread-lexpr)
2871	(! spread-list))
2872	(target-arch-case
2873	(:x8632
2874	(! load-node-register-from-spill-area x862-temp0)))
2875
2876	(when (and tail-p x862-register-restore-count)
2877	(x862-restore-nvrs seg x862-register-restore-ea x862-register-restore-count nil)))
2878	(if nargs
2879	(unless alternate-tail-call (x862-set-nargs seg nargs))
2880	(! pop-argument-registers)))
2881	(if callable
2882	(if (not tail-p)
2883	(if (x862-mvpass-p xfer)
2884	(let* ((call-reg (if symp ($ x862-fname) ($ x862-temp0))))
2885	(unless mvpass-label (compiler-bug "no label for mvpass"))
2886	(if label-p
2887	(x862-copy-register seg call-reg ($ x862-fn))
2888	(if a-reg
2889	(x862-copy-register seg call-reg a-reg)
2890	(x862-store-immediate seg func call-reg)))
2891	(if symp
2892	(! pass-multiple-values-symbol)
2893	(! pass-multiple-values))
2894	(when mvpass-label
2895	(@= mvpass-label)))
2896	(progn
2897	(if label-p
2898	(progn
2899	(! call-label (aref backend-labels 2)))
2900	(progn
2901	(if a-reg
2902	(x862-copy-register seg destreg a-reg)
2903	(x862-store-immediate seg func destreg))
2904	(if symp
2905	(x862-call-symbol seg nil)
2906	(! call-known-function))))))
2907	(if alternate-tail-call
2908	(progn
2909	(x862-unwind-stack seg xfer 0 0 x862-tail-vsp)
2910	(! jump (aref backend-labels x862-tail-label)))
2911	(progn
2912	(x862-unwind-stack seg xfer 0 0 #x7fffff)
2913	(if (and (not spread-p) nargs (%i<= nargs x862-target-num-arg-regs))
2914	(progn
2915	(unless (or label-p a-reg) (x862-store-immediate seg func destreg))
2916	(x862-restore-full-lisp-context seg)
2917	(if label-p
2918	(! jump (aref backend-labels 1))
2919	(progn
2920	(if symp
2921	(x862-call-symbol seg t)
2922	(! jump-known-function)))))
2923	(progn
2924	(unless (or label-p a-reg) (x862-store-immediate seg func destreg))
2925	(when label-p
2926	(x862-copy-register seg x862-temp0 x862-fn))
2927
2928	(cond ((or spread-p (null nargs))
2929	(if symp
2930	(! tail-call-sym-gen)
2931	(! tail-call-fn-gen)))
2932	((%i> nargs x862-target-num-arg-regs)
2933	(if symp
2934	(! tail-call-sym-slide)
2935	(! tail-call-fn-slide)))
2936	(t
2937	(if symp
2938	(! tail-call-sym-vsp)
2939	(! tail-call-fn-vsp)))))))))
2940	;; The general (funcall) case: we don't know (at compile-time)
2941	;; for sure whether we've got a symbol or a (local, constant)
2942	;; function.
2943	(progn
2944	(unless (or (fixnump fn) (typep fn 'lreg))
2945	(x862-one-targeted-reg-form seg fn destreg))
2946	(if (not tail-p)
2947	(if (x862-mvpass-p xfer)
2948	(progn (! pass-multiple-values)
2949	(when mvpass-label
2950	(@= mvpass-label)))
2951	(! funcall))
2952	(cond ((or (null nargs) spread-p)
2953	(! tail-funcall-gen))
2954	((%i> nargs x862-target-num-arg-regs)
2955	(! tail-funcall-slide))
2956	(t
2957	(! restore-full-lisp-context)
2958	(! tail-funcall)))))))
2959	nil))
2960
2961	(defun x862-seq-fbind (seg vreg xfer vars afuncs body p2decls)
2962	(let* ((old-stack (x862-encode-stack))
2963	(copy afuncs)
2964	(func nil))
2965	(with-x86-p2-declarations p2decls
2966	(dolist (var vars)
2967	(when (neq 0 (afunc-fn-refcount (setq func (pop afuncs))))
2968	(x862-seq-bind-var seg var (nx1-afunc-ref func))))
2969	(x862-undo-body seg vreg xfer body old-stack)
2970	(dolist (var vars)
2971	(when (neq 0 (afunc-fn-refcount (setq func (pop copy))))
2972	(x862-close-var seg var))))))
2973
2974	(defun x862-make-closure (seg afunc downward-p)
2975	(with-x86-local-vinsn-macros (seg)
2976	(flet ((var-to-reg (var target)
2977	(let* ((ea (var-ea (var-bits var))))
2978	(if ea
2979	(x862-addrspec-to-reg seg (x862-ea-open ea) target)
2980	(! load-nil target))
2981	target))
2982	(set-some-cells (dest cellno c0 c1 c2 c3)
2983	(declare (fixnum cellno))
2984	(! misc-set-c-node c0 dest cellno)
2985	(incf cellno)
2986	(when c1
2987	(! misc-set-c-node c1 dest cellno)
2988	(incf cellno)
2989	(when c2
2990	(! misc-set-c-node c2 dest cellno)
2991	(incf cellno)
2992	(when c3
2993	(! misc-set-c-node c3 dest cellno)
2994	(incf cellno))))
2995	cellno))
2996	(let* ((inherited-vars (afunc-inherited-vars afunc))
2997	(arch (backend-target-arch target-backend))
2998	(dest ($ x862-arg-z))
2999	(vsize (+ (length inherited-vars)
3000	(target-arch-case
3001	(:x8632 7)
3002	(:x8664 5)) ; %closure-code%, afunc
3003	1))) ; lfun-bits
3004	(declare (list inherited-vars))
3005	(let* ((cell (target-arch-case (:x8632 6)
3006	(:x8664 4))))
3007	(declare (fixnum cell))
3008	(if downward-p
3009	(progn
3010	(! make-fixed-stack-gvector
3011	dest
3012	(ash (logandc2 (+ vsize 2) 1) (arch::target-word-shift arch))
3013	(arch::make-vheader vsize (nx-lookup-target-uvector-subtag :function)))
3014	(x862-open-undo $undostkblk))
3015	(progn
3016	(x862-lri seg
3017	x862-imm0
3018	(arch::make-vheader vsize (nx-lookup-target-uvector-subtag :function)))
3019	(target-arch-case
3020	(:x8632
3021	(! setup-uvector-allocation x862-imm0)
3022	(x862-lri seg x862-imm0 (- (ash (logandc2 (+ vsize 2) 1) (arch::target-word-shift arch)) x8632::fulltag-misc)))
3023	(:x8664
3024	(x862-lri seg x8664::imm1 (- (ash (logandc2 (+ vsize 2) 1) (arch::target-word-shift arch)) x8664::fulltag-misc))))
3025	(! %allocate-uvector dest)))
3026	(! init-nclosure x862-arg-z)
3027	;;; xxx --- x8632 likely to have register conflicts with x862-ra0
3028	(x862-store-immediate seg (x862-afunc-lfun-ref afunc) x862-ra0)
3029	(target-arch-case
3030	(:x8632
3031	(with-node-temps (x862-arg-z) (t0)
3032	(do* ((func x862-ra0 nil))
3033	((null inherited-vars))
3034	(let* ((t0r (or func (if inherited-vars
3035	(var-to-reg (pop inherited-vars) t0)))))
3036	(! misc-set-c-node t0r dest cell)
3037	(incf cell)))))
3038	(:x8664
3039	(with-node-temps (x862-arg-z) (t0 t1 t2 t3)
3040	(do* ((func x862-ra0 nil))
3041	((null inherited-vars))
3042	(let* ((t0r (or func (if inherited-vars (var-to-reg (pop inherited-vars) t0))))
3043	(t1r (if inherited-vars (var-to-reg (pop inherited-vars) t1)))
3044	(t2r (if inherited-vars (var-to-reg (pop inherited-vars) t2)))
3045	(t3r (if inherited-vars (var-to-reg (pop inherited-vars) t3))))
3046	(setq cell (set-some-cells dest cell t0r t1r t2r t3r)))))))
3047	(x862-lri seg x862-arg-y (ash (logior (ash -1 $lfbits-noname-bit) (ash 1 $lfbits-trampoline-bit)) x862-target-fixnum-shift))
3048	(! misc-set-c-node x862-arg-y dest cell))
3049	(! finalize-closure dest)
3050	dest))))
3051
3052	(defun x862-symbol-entry-locative (sym)
3053	(setq sym (require-type sym 'symbol))
3054	(when (eq sym '%call-next-method-with-args)
3055	(setf (afunc-bits x862-cur-afunc)
3056	(%ilogior (%ilsl $fbitnextmethargsp 1) (afunc-bits x862-cur-afunc))))
3057	(or (assq sym x862-fcells)
3058	(let ((new (list sym)))
3059	(push new x862-fcells)
3060	new)))
3061
3062	(defun x862-symbol-value-cell (sym)
3063	(setq sym (require-type sym 'symbol))
3064	(or (assq sym x862-vcells)
3065	(let ((new (list sym)))
3066	(push new x862-vcells)
3067	(ensure-binding-index sym)
3068	new)))
3069
3070
3071	(defun x862-symbol-locative-p (imm)
3072	(and (consp imm)
3073	(or (memq imm x862-vcells)
3074	(memq imm x862-fcells))))
3075
3076
3077
3078
3079	(defun x862-immediate-function-p (f)
3080	(setq f (acode-unwrapped-form-value f))
3081	(and (acode-p f)
3082	(or (eq (%car f) (%nx1-operator immediate))
3083	(eq (%car f) (%nx1-operator simple-function)))))
3084
3085	(defun x86-constant-form-p (form)
3086	(setq form (nx-untyped-form form))
3087	(if form
3088	(or (nx-null form)
3089	(nx-t form)
3090	(and (consp form)
3091	(or (eq (acode-operator form) (%nx1-operator immediate))
3092	(eq (acode-operator form) (%nx1-operator fixnum))
3093	(eq (acode-operator form) (%nx1-operator simple-function)))))))
3094
3095
3096
3097	(defun x862-integer-constant-p (form mode)
3098	(let* ((val
3099	(or (acode-fixnum-form-p (setq form (acode-unwrapped-form form)))
3100	(and (acode-p form)
3101	(eq (acode-operator form) (%nx1-operator immediate))
3102	(setq form (%cadr form))
3103	(if (typep form 'integer)
3104	form)))))
3105	(when val
3106	(let* ((type (mode-specifier-type mode))
3107	(high (numeric-ctype-high type))
3108	(low (numeric-ctype-low type)))
3109	(if (and (>= val low)
3110	(<= val high))
3111	val
3112	(if (<= (integer-length val) (integer-length (- high low)))
3113	(if (eql 0 low) ; type is unsigned, value is negative
3114	(logand high val)
3115	(- val (1+ (- high low))))))))))
3116
3117
3118
3119
3120	(defun x86-side-effect-free-form-p (form)
3121	(when (consp (setq form (acode-unwrapped-form-value form)))
3122	(or (x86-constant-form-p form)
3123	;(eq (acode-operator form) (%nx1-operator bound-special-ref))
3124	(if (eq (acode-operator form) (%nx1-operator lexical-reference))
3125	(not (%ilogbitp $vbitsetq (nx-var-bits (%cadr form))))))))
3126
3127	(defun x862-formlist (seg stkargs &optional revregargs)
3128	(with-x86-local-vinsn-macros (seg)
3129	(let* ((nregs (length revregargs))
3130	(n nregs))
3131	(declare (fixnum n))
3132	(dolist (arg stkargs)
3133	(let* ((pushform (x862-acode-operator-supports-push arg)))
3134	(if pushform
3135	(progn
3136	(x862-form seg :push nil pushform)
3137	(x862-new-vstack-lcell :outgoing-argument x862-target-lcell-size 0 nil)
3138	(x862-adjust-vstack x862-target-node-size))
3139
3140	(let* ((reg (x862-one-untargeted-reg-form seg arg x862-arg-z)))
3141	(x862-vpush-register-arg seg reg)))
3142	(incf n)))
3143	(when revregargs
3144	(let* ((zform (%car revregargs))
3145	(yform (%cadr revregargs))
3146	(xform (%caddr revregargs)))
3147	(if (eq 3 nregs)
3148	(progn
3149	(target-arch-case (:x8632 (compiler-bug "3 reg args on x8632?")))
3150	(x862-three-targeted-reg-forms seg xform ($ x8664::arg_x)
3151	yform ($ x862-arg-y)
3152	zform ($ x862-arg-z)))
3153	(if (eq 2 nregs)
3154	(x862-two-targeted-reg-forms seg yform ($ x862-arg-y) zform ($ x862-arg-z))
3155	(x862-one-targeted-reg-form seg zform ($ x862-arg-z))))))
3156	n)))
3157
3158	(defun x862-arglist (seg args &optional mv-label)
3159	(with-x86-local-vinsn-macros (seg)
3160	(when mv-label
3161	(x862-vpush-label seg (aref backend-labels mv-label)))
3162	(when (car args)
3163	(! reserve-outgoing-frame)
3164	(x862-new-vstack-lcell :reserved x862-target-lcell-size 0 nil)
3165	(x862-new-vstack-lcell :reserved x862-target-lcell-size 0 nil)
3166	(setq x862-vstack (+ x862-vstack (* 2 x862-target-node-size))))
3167	(x862-formlist seg (car args) (cadr args))))
3168
3169
3170	(defun x862-unboxed-integer-arg-to-reg (seg form immreg &optional ffi-arg-type)
3171	(let* ((mode (ecase ffi-arg-type
3172	((nil) :natural)
3173	(:signed-byte :s8)
3174	(:unsigned-byte :u8)
3175	(:signed-halfword :s16)
3176	(:unsigned-halfword :u16)
3177	(:signed-fullword :s32)
3178	(:unsigned-fullword :u32)
3179	(:unsigned-doubleword :u64)
3180	(:signed-doubleword :s64)))
3181	(modeval (gpr-mode-name-value mode)))
3182	(with-x86-local-vinsn-macros (seg)
3183	(let* ((value (x862-integer-constant-p form mode)))
3184	(if value
3185	(progn
3186	(unless (typep immreg 'lreg)
3187	(setq immreg (make-unwired-lreg immreg :mode modeval)))
3188	(if (< value 0)
3189	(x862-lri seg immreg value)
3190	(x862-lriu seg immreg value))
3191	immreg)
3192	(progn
3193	(x862-one-targeted-reg-form seg form (make-wired-lreg x862-imm0 :mode modeval))))))))
3194
3195
3196	(defun x862-macptr-arg-to-reg (seg form address-reg)
3197	(x862-one-targeted-reg-form seg
3198	form
3199	address-reg))
3200
3201
3202	(defun x862-one-lreg-form (seg form lreg)
3203	(let ((is-float (= (hard-regspec-class lreg) hard-reg-class-fpr)))
3204	(if is-float
3205	(x862-form-float seg lreg nil form)
3206	(x862-form seg lreg nil form))
3207	lreg))
3208
3209	(defun x862-one-targeted-reg-form (seg form reg)
3210	(x862-one-lreg-form seg form reg))
3211
3212	(defun x862-one-untargeted-lreg-form (seg form reg)
3213	(x862-one-lreg-form seg form (if (typep reg 'lreg) reg (make-unwired-lreg reg))))
3214
3215	(defun x862-one-untargeted-reg-form (seg form suggested)
3216	(with-x86-local-vinsn-macros (seg)
3217	(let* ((gpr-p (= (hard-regspec-class suggested) hard-reg-class-gpr))
3218	(node-p (if gpr-p (= (get-regspec-mode suggested) hard-reg-class-gpr-mode-node))))
3219	(if node-p
3220	(let* ((ref (x862-lexical-reference-ea form))
3221	(reg (backend-ea-physical-reg ref hard-reg-class-gpr)))
3222	(if reg
3223	ref
3224	(if (nx-null form)
3225	(progn
3226	(! load-nil suggested)
3227	suggested)
3228	(if (and (acode-p form)
3229	(eq (acode-operator form) (%nx1-operator immediate))
3230	(setq reg (x862-register-constant-p (cadr form))))
3231	reg
3232	(x862-one-untargeted-lreg-form seg form suggested)))))
3233	(x862-one-untargeted-lreg-form seg form suggested)))))
3234
3235
3236	(defun x862-push-register (seg areg)
3237	(let* ((a-float (= (hard-regspec-class areg) hard-reg-class-fpr))
3238	(a-single (if a-float (= (get-regspec-mode areg) hard-reg-class-fpr-mode-single)))
3239	(a-node (unless a-float (= (get-regspec-mode areg) hard-reg-class-gpr-mode-node)))
3240	vinsn)
3241	(with-x86-local-vinsn-macros (seg)
3242	(if a-node
3243	(setq vinsn (x862-vpush-register seg areg :node-temp))
3244	(if a-single
3245	(target-arch-case
3246	(:x8632
3247	(setq vinsn (! temp-push-single-float areg))
3248	(incf x862-cstack x862-target-dnode-size))
3249	(:x8664
3250	(setq vinsn (! vpush-single-float areg))
3251	(x862-new-vstack-lcell :single-float x862-target-lcell-size 0 nil)
3252	(x862-adjust-vstack x862-target-node-size)))
3253	(target-arch-case
3254	(:x8632
3255	(if a-float
3256	(progn
3257	(setq vinsn (! temp-push-double-float areg))
3258	(incf x862-cstack 16))
3259	(progn
3260	(setq vinsn (! temp-push-unboxed-word areg))
3261	(incf x862-cstack x862-target-dnode-size))))
3262	(:x8664
3263	(setq vinsn
3264	(if a-float
3265	(! temp-push-double-float areg)
3266	(! temp-push-unboxed-word areg)))
3267	(setq x862-cstack (+ x862-cstack 16))))))
3268	vinsn)))
3269
3270	(defun x862-pop-register (seg areg)
3271	(let* ((a-float (= (hard-regspec-class areg) hard-reg-class-fpr))
3272	(a-single (if a-float (= (get-regspec-mode areg) hard-reg-class-fpr-mode-single)))
3273	(a-node (unless a-float (= (get-regspec-mode areg) hard-reg-class-gpr-mode-node)))
3274	vinsn)
3275	(with-x86-local-vinsn-macros (seg)
3276	(if a-node
3277	(setq vinsn (x862-vpop-register seg areg))
3278	(if a-single
3279	(target-arch-case
3280	(:x8632
3281	(setq vinsn (! temp-pop-single-float areg))
3282	(decf x862-cstack x862-target-dnode-size))
3283	(:x8664
3284	(setq vinsn (! vpop-single-float areg))
3285	(setq x862-top-vstack-lcell (lcell-parent x862-top-vstack-lcell))
3286	(x862-adjust-vstack (- x862-target-node-size))))
3287	(target-arch-case
3288	(:x8632
3289	(if a-float
3290	(progn
3291	(setq vinsn (! temp-pop-double-float areg))
3292	(decf x862-cstack 16))
3293	(progn
3294	(setq vinsn (! temp-pop-unboxed-word areg))
3295	(decf x862-cstack x862-target-dnode-size))))
3296	(:x8664
3297	(setq vinsn
3298	(if a-float
3299	(! temp-pop-double-float areg)
3300	(! temp-pop-unboxed-word areg)))
3301	(setq x862-cstack (- x862-cstack 16))))))
3302	vinsn)))
3303
3304	(defun x862-acc-reg-for (reg)
3305	(with-x86-local-vinsn-macros (seg)
3306	(let* ((class (hard-regspec-class reg))
3307	(mode (get-regspec-mode reg)))
3308	(declare (fixnum class mode))
3309	(cond ((= class hard-reg-class-fpr)
3310	(make-wired-lreg x862-fp1 :class class :mode mode))
3311	((= class hard-reg-class-gpr)
3312	(if (= mode hard-reg-class-gpr-mode-node)
3313	($ x862-arg-z)
3314	(make-wired-lreg x862-imm0 :mode mode)))
3315	(t (compiler-bug "Unknown register class for reg ~s" reg))))))
3316
3317	;;; The compiler often generates superfluous pushes & pops. Try to
3318	;;; eliminate them.
3319	(defun x862-elide-pushes (seg push-vinsn pop-vinsn)
3320	(with-x86-local-vinsn-macros (seg)
3321	(let* ((pushed-reg (svref (vinsn-variable-parts push-vinsn) 0))
3322	(popped-reg (svref (vinsn-variable-parts pop-vinsn) 0))
3323	(same-reg (eq (hard-regspec-value pushed-reg)
3324	(hard-regspec-value popped-reg)))
3325	(csp-p (vinsn-attribute-p push-vinsn :csp)))
3326	(when csp-p ; vsp case is harder.
3327	(let* ((pushed-reg-is-set (vinsn-sequence-sets-reg-p
3328	push-vinsn pop-vinsn pushed-reg))
3329	(popped-reg-is-set (if same-reg
3330	pushed-reg-is-set
3331	(vinsn-sequence-sets-reg-p
3332	push-vinsn pop-vinsn popped-reg))))
3333	(unless (and pushed-reg-is-set popped-reg-is-set)
3334	(unless same-reg
3335	(let* ((copy (if (eq (hard-regspec-class pushed-reg)
3336	hard-reg-class-fpr)
3337	(if (= (get-regspec-mode pushed-reg)
3338	hard-reg-class-fpr-mode-double)
3339	(! copy-double-float popped-reg pushed-reg)
3340	(! copy-single-float popped-reg pushed-reg))
3341	(! copy-gpr popped-reg pushed-reg))))
3342	(remove-dll-node copy)
3343	(if pushed-reg-is-set
3344	(insert-dll-node-after copy push-vinsn)
3345	(insert-dll-node-before copy push-vinsn))))
3346	(elide-vinsn push-vinsn)
3347	(elide-vinsn pop-vinsn)))))))
3348
3349
3350	;;; we never leave the first form pushed (the 68K compiler had some subprims that
3351	;;; would vpop the first argument out of line.)
3352	(defun x862-two-targeted-reg-forms (seg aform areg bform breg)
3353	(unless (typep areg 'lreg)
3354	(warn "~s is not an lreg (1/2)" areg))
3355	(unless (typep breg 'lreg)
3356	(warn "~s is not an lreg (2/2)" breg))
3357	(let* ((avar (x862-lexical-reference-p aform))
3358	(atriv (x862-trivial-p bform))
3359	(aconst (and (not atriv) (or (x86-side-effect-free-form-p aform)
3360	(if avar (x862-var-not-set-by-form-p avar bform)))))
3361	apushed)
3362	(progn
3363	(unless aconst
3364	(if atriv
3365	(x862-one-targeted-reg-form seg aform areg)
3366	(setq apushed (x862-push-register seg (x862-one-untargeted-reg-form seg aform (x862-acc-reg-for areg))))))
3367	(x862-one-targeted-reg-form seg bform breg)
3368	(if aconst
3369	(x862-one-targeted-reg-form seg aform areg)
3370	(if apushed
3371	(x862-elide-pushes seg apushed (x862-pop-register seg areg)))))
3372	(values areg breg)))
3373
3374
3375	(defun x862-two-untargeted-reg-forms (seg aform areg bform breg)
3376	(with-x86-local-vinsn-macros (seg)
3377	(let* ((avar (x862-lexical-reference-p aform))
3378	(adest areg)
3379	(bdest breg)
3380	(atriv (x862-trivial-p bform))
3381	(aconst (and (not atriv) (or (x86-side-effect-free-form-p aform)
3382	(if avar (x862-var-not-set-by-form-p avar bform)))))
3383	(apushed (not (or atriv aconst))))
3384	(progn
3385	(unless aconst
3386	(if atriv
3387	(setq adest (x862-one-untargeted-reg-form seg aform areg))
3388	(setq apushed (x862-push-register seg (x862-one-untargeted-reg-form seg aform (x862-acc-reg-for areg))))))
3389	(setq bdest (x862-one-untargeted-reg-form seg bform breg))
3390	(if aconst
3391	(setq adest (x862-one-untargeted-reg-form seg aform areg))
3392	(if apushed
3393	(x862-elide-pushes seg apushed (x862-pop-register seg areg)))))
3394	(values adest bdest))))
3395
3396
3397	(defun x862-three-targeted-reg-forms (seg aform areg bform breg cform creg)
3398	(unless (typep areg 'lreg)
3399	(warn "~s is not an lreg (1/3)" areg))
3400	(unless (typep breg 'lreg)
3401	(warn "~s is not an lreg (2/3)" breg))
3402	(unless (typep creg 'lreg)
3403	(warn "~s is not an lreg (3/3)" creg))
3404	(let* ((atriv (or (null aform)
3405	(and (x862-trivial-p bform)
3406	(x862-trivial-p cform))))
3407	(btriv (or (null bform)
3408	(x862-trivial-p cform)))
3409	(aconst (and (not atriv)
3410	(or (x86-side-effect-free-form-p aform)
3411	(let ((avar (x862-lexical-reference-p aform)))
3412	(and avar
3413	(x862-var-not-set-by-form-p avar bform)
3414	(x862-var-not-set-by-form-p avar cform))))))
3415	(bconst (and (not btriv)
3416	(or
3417	(x86-side-effect-free-form-p bform)
3418	(let ((bvar (x862-lexical-reference-p bform)))
3419	(and bvar (x862-var-not-set-by-form-p bvar cform))))))
3420	(apushed nil)
3421	(bpushed nil))
3422	(if (and aform (not aconst))
3423	(if atriv
3424	(x862-one-targeted-reg-form seg aform areg)
3425	(setq apushed (x862-push-register seg (x862-one-untargeted-reg-form seg aform (x862-acc-reg-for areg))))))
3426	(if (and bform (not bconst))
3427	(if btriv
3428	(x862-one-targeted-reg-form seg bform breg)
3429	(setq bpushed (x862-push-register seg (x862-one-untargeted-reg-form seg bform (x862-acc-reg-for breg))))))
3430	(x862-one-targeted-reg-form seg cform creg)
3431	(unless btriv
3432	(if bconst
3433	(x862-one-targeted-reg-form seg bform breg)
3434	(x862-elide-pushes seg bpushed (x862-pop-register seg breg))))
3435	(unless atriv
3436	(if aconst
3437	(x862-one-targeted-reg-form seg aform areg)
3438	(x862-elide-pushes seg apushed (x862-pop-register seg areg))))
3439	(values areg breg creg)))
3440
3441	(defun x862-four-targeted-reg-forms (seg aform areg bform breg cform creg dform dreg)
3442	(unless (typep areg 'lreg)
3443	(warn "~s is not an lreg (1/4)" areg))
3444	(unless (typep breg 'lreg)
3445	(warn "~s is not an lreg (2/4)" breg))
3446	(unless (typep creg 'lreg)
3447	(warn "~s is not an lreg (3/4)" creg))
3448	(unless (typep dreg 'lreg)
3449	(warn "~s is not an lreg (4/4)" dreg))
3450	(let* ((atriv (or (null aform)
3451	(and (x862-trivial-p bform)
3452	(x862-trivial-p cform)
3453	(x862-trivial-p dform))))
3454	(btriv (or (null bform)
3455	(and (x862-trivial-p cform)
3456	(x862-trivial-p dform))))
3457	(ctriv (or (null cform)
3458	(x862-trivial-p dform)))
3459	(aconst (and (not atriv)
3460	(or (x86-side-effect-free-form-p aform)
3461	(let ((avar (x862-lexical-reference-p aform)))
3462	(and avar
3463	(x862-var-not-set-by-form-p avar bform)
3464	(x862-var-not-set-by-form-p avar cform)
3465	(x862-var-not-set-by-form-p avar dform))))))
3466	(bconst (and (not btriv)
3467	(or
3468	(x86-side-effect-free-form-p bform)
3469	(let ((bvar (x862-lexical-reference-p bform)))
3470	(and bvar
3471	(x862-var-not-set-by-form-p bvar cform)
3472	(x862-var-not-set-by-form-p bvar dform))))))
3473	(cconst (and (not ctriv)
3474	(or
3475	(x86-side-effect-free-form-p cform)
3476	(let ((cvar (x862-lexical-reference-p cform)))
3477	(and cvar (x862-var-not-set-by-form-p cvar dform))))))
3478	(apushed nil)
3479	(bpushed nil)
3480	(cpushed nil))
3481	(if (and aform (not aconst))
3482	(if atriv
3483	(x862-one-targeted-reg-form seg aform areg)
3484	(setq apushed (x862-push-register seg (x862-one-untargeted-reg-form seg aform (x862-acc-reg-for areg))))))
3485	(if (and bform (not bconst))
3486	(if btriv
3487	(x862-one-targeted-reg-form seg bform breg)
3488	(setq bpushed (x862-push-register seg (x862-one-untargeted-reg-form seg bform (x862-acc-reg-for breg))))))
3489	(if (and cform (not cconst))
3490	(if ctriv
3491	(x862-one-targeted-reg-form seg cform creg)
3492	(setq cpushed (x862-push-register seg (x862-one-untargeted-reg-form seg cform (x862-acc-reg-for creg))))))
3493	(x862-one-targeted-reg-form seg dform dreg)
3494	(unless ctriv
3495	(if cconst
3496	(x862-one-targeted-reg-form seg cform creg)
3497	(x862-elide-pushes seg cpushed (x862-pop-register seg creg))))
3498	(unless btriv
3499	(if bconst
3500	(x862-one-targeted-reg-form seg bform breg)
3501	(x862-elide-pushes seg bpushed (x862-pop-register seg breg))))
3502	(unless atriv
3503	(if aconst
3504	(x862-one-targeted-reg-form seg aform areg)
3505	(x862-elide-pushes seg apushed (x862-pop-register seg areg))))
3506	(values areg breg creg)))
3507
3508	(defun x862-three-untargeted-reg-forms (seg aform areg bform breg cform creg)
3509	(with-x86-local-vinsn-macros (seg)
3510	(let* ((atriv (or (null aform)
3511	(and (x862-trivial-p bform)
3512	(x862-trivial-p cform))))
3513	(btriv (or (null bform)
3514	(x862-trivial-p cform)))
3515	(aconst (and (not atriv)
3516	(or (x86-side-effect-free-form-p aform)
3517	(let ((avar (x862-lexical-reference-p aform)))
3518	(and avar
3519	(x862-var-not-set-by-form-p avar bform)
3520	(x862-var-not-set-by-form-p avar cform))))))
3521	(bconst (and (not btriv)
3522	(or
3523	(x86-side-effect-free-form-p bform)
3524	(let ((bvar (x862-lexical-reference-p bform)))
3525	(and bvar (x862-var-not-set-by-form-p bvar cform))))))
3526	(adest areg)
3527	(bdest breg)
3528	(cdest creg)
3529	(apushed nil)
3530	(bpushed nil))
3531	(if (and aform (not aconst))
3532	(if atriv
3533	(setq adest (x862-one-untargeted-reg-form seg aform ($ areg)))
3534	(setq apushed (x862-push-register seg (x862-one-untargeted-reg-form seg aform (x862-acc-reg-for areg))))))
3535	(if (and bform (not bconst))
3536	(if btriv
3537	(setq bdest (x862-one-untargeted-reg-form seg bform ($ breg)))
3538	(setq bpushed (x862-push-register seg (x862-one-untargeted-reg-form seg bform (x862-acc-reg-for breg))))))
3539	(setq cdest (x862-one-untargeted-reg-form seg cform creg))
3540	(unless btriv
3541	(if bconst
3542	(setq bdest (x862-one-untargeted-reg-form seg bform breg))
3543	(x862-elide-pushes seg bpushed (x862-pop-register seg breg))))
3544	(unless atriv
3545	(if aconst
3546	(setq adest (x862-one-untargeted-reg-form seg aform areg))
3547	(x862-elide-pushes seg apushed (x862-pop-register seg areg))))
3548	(values adest bdest cdest))))
3549
3550	(defun x862-four-untargeted-reg-forms (seg aform areg bform breg cform creg dform dreg)
3551	(let* ((atriv (or (null aform)
3552	(and (x862-trivial-p bform)
3553	(x862-trivial-p cform)
3554	(x862-trivial-p dform))))
3555	(btriv (or (null bform)
3556	(and (x862-trivial-p cform)
3557	(x862-trivial-p dform))))
3558	(ctriv (or (null cform)
3559	(x862-trivial-p dform)))
3560	(aconst (and (not atriv)
3561	(or (x86-side-effect-free-form-p aform)
3562	(let ((avar (x862-lexical-reference-p aform)))
3563	(and avar
3564	(x862-var-not-set-by-form-p avar bform)
3565	(x862-var-not-set-by-form-p avar cform)
3566	(x862-var-not-set-by-form-p avar dform))))))
3567	(bconst (and (not btriv)
3568	(or
3569	(x86-side-effect-free-form-p bform)
3570	(let ((bvar (x862-lexical-reference-p bform)))
3571	(and bvar
3572	(x862-var-not-set-by-form-p bvar cform)
3573	(x862-var-not-set-by-form-p bvar dform))))))
3574	(cconst (and (not ctriv)
3575	(or
3576	(x86-side-effect-free-form-p cform)
3577	(let ((cvar (x862-lexical-reference-p cform)))
3578	(and cvar
3579	(x862-var-not-set-by-form-p cvar dform))))))
3580	(adest areg)
3581	(bdest breg)
3582	(cdest creg)
3583	(ddest dreg)
3584	(apushed nil)
3585	(bpushed nil)
3586	(cpushed nil))
3587	(if (and aform (not aconst))
3588	(if atriv
3589	(setq adest (x862-one-targeted-reg-form seg aform areg))
3590	(setq apushed (x862-push-register seg (x862-one-untargeted-reg-form seg aform (x862-acc-reg-for areg))))))
3591	(if (and bform (not bconst))
3592	(if btriv
3593	(setq bdest (x862-one-untargeted-reg-form seg bform breg))
3594	(setq bpushed (x862-push-register seg (x862-one-untargeted-reg-form seg bform (x862-acc-reg-for breg))))))
3595	(if (and cform (not cconst))
3596	(if ctriv
3597	(setq cdest (x862-one-untargeted-reg-form seg cform creg))
3598	(setq cpushed (x862-push-register seg (x862-one-untargeted-reg-form seg cform (x862-acc-reg-for creg))))))
3599	(setq ddest (x862-one-untargeted-reg-form seg dform dreg))
3600	(unless ctriv
3601	(if cconst
3602	(setq cdest (x862-one-untargeted-reg-form seg cform creg))
3603	(x862-elide-pushes seg cpushed (x862-pop-register seg creg))))
3604	(unless btriv
3605	(if bconst
3606	(setq bdest (x862-one-untargeted-reg-form seg bform breg))
3607	(x862-elide-pushes seg bpushed (x862-pop-register seg breg))))
3608	(unless atriv
3609	(if aconst
3610	(setq adest (x862-one-untargeted-reg-form seg aform areg))
3611	(x862-elide-pushes seg apushed (x862-pop-register seg areg))))
3612	(values adest bdest cdest ddest)))
3613
3614	(defun x862-lri (seg reg value)
3615	(with-x86-local-vinsn-macros (seg)
3616	(! lri reg value)))
3617
3618	;;; unsigned variant
3619	(defun x862-lriu (seg reg value)
3620	(with-x86-local-vinsn-macros (seg)
3621	(! lriu reg value)))
3622
3623	(defun x862-multiple-value-body (seg form)
3624	(let* ((lab (backend-get-next-label))
3625	(x862-vstack x862-vstack)
3626	(x862-top-vstack-lcell x862-top-vstack-lcell)
3627	(old-stack (x862-encode-stack)))
3628	(with-x86-local-vinsn-macros (seg)
3629	(x862-open-undo $undomvexpect)
3630	(x862-undo-body seg nil (logior $backend-mvpass-mask lab) form old-stack)
3631	(@ lab))))
3632
3633	(defun x862-afunc-lfun-ref (afunc)
3634	(or
3635	(afunc-lfun afunc)
3636	(progn (pushnew afunc (afunc-fwd-refs x862-cur-afunc) :test #'eq)
3637	afunc)))
3638
3639	(defun x862-augment-arglist (afunc arglist &optional (maxregs x862-target-num-arg-regs))
3640	(let ((inherited-args (afunc-inherited-vars afunc)))
3641	(when inherited-args
3642	(let* ((current-afunc x862-cur-afunc)
3643	(stkargs (car arglist))
3644	(regargs (cadr arglist))
3645	(inhforms nil)
3646	(numregs (length regargs))
3647	(own-inhvars (afunc-inherited-vars current-afunc)))
3648	(dolist (var inherited-args)
3649	(let* ((root-var (nx-root-var var))
3650	(other-guy
3651	(dolist (v own-inhvars #\|(error "other guy not found")\|# root-var)
3652	(when (eq root-var (nx-root-var v)) (return v)))))
3653	(push (make-acode (%nx1-operator inherited-arg) other-guy) inhforms)))
3654	(dolist (form inhforms)
3655	(if (%i< numregs maxregs)
3656	(progn
3657	(setq regargs (nconc regargs (list form)))
3658	(setq numregs (%i+ numregs 1)))
3659	(push form stkargs)))
3660	(%rplaca (%cdr arglist) regargs) ; might have started out NIL.
3661	(%rplaca arglist stkargs))))
3662	arglist)
3663
3664	(defun x862-acode-operator-supports-u8 (form)
3665	(setq form (acode-unwrapped-form-value form))
3666	(when (acode-p form)
3667	(let* ((operator (acode-operator form)))
3668	(if (member operator x862-operator-supports-u8-target)
3669	(values operator (acode-operand 1 form))))))
3670
3671	(defun x862-acode-operator-supports-push (form)
3672	(let ((value (acode-unwrapped-form-value form)))
3673	(when (acode-p value)
3674	(if (or (eq value nx-t)
3675	(eq value nx-nil)
3676	(let* ((operator (acode-operator value)))
3677	(member operator x862-operator-supports-push)))
3678	value))))
3679
3680	(defun x862-compare-u8 (seg vreg xfer form u8constant cr-bit true-p u8-operator)
3681	(with-x86-local-vinsn-macros (seg vreg xfer)
3682	(with-imm-target () (u8 :u8)
3683	(if (and (eql u8-operator (%nx1-operator lisptag))
3684	(eql 0 u8constant))
3685	(let* ((formreg (x862-one-untargeted-reg-form seg form x862-arg-z)))
3686
3687	(! set-flags-from-lisptag formreg))
3688	(progn
3689	(x862-use-operator u8-operator seg u8 nil form)
3690	(if (zerop u8constant)
3691	(! compare-u8-reg-to-zero u8)
3692	(! compare-u8-constant u8 u8constant))))
3693	;; Flags set. Branch or return a boolean value ?
3694	(setq cr-bit (x862-cr-bit-for-unsigned-comparison cr-bit))
3695	(regspec-crf-gpr-case
3696	(vreg dest)
3697	(^ cr-bit true-p)
3698	(progn
3699	(ensuring-node-target (target dest)
3700	(if (not true-p)
3701	(setq cr-bit (logxor 1 cr-bit)))
3702	(! cr-bit->boolean target cr-bit))
3703	(^))))))
3704
3705	;;; There are other cases involving constants that are worth exploiting.
3706	(defun x862-compare (seg vreg xfer i j cr-bit true-p)
3707	(with-x86-local-vinsn-macros (seg vreg xfer)
3708	(let* ((iu8 (let* ((i-fixnum (acode-fixnum-form-p i)))
3709	(if (typep i-fixnum '(unsigned-byte 8))
3710	i-fixnum)))
3711	(ju8 (let* ((j-fixnum (acode-fixnum-form-p j)))
3712	(if (typep j-fixnum '(unsigned-byte 8))
3713	j-fixnum)))
3714	(u8 (or iu8 ju8))
3715	(other-u8 (if iu8 j (if ju8 i)))
3716	(js32 (acode-s32-constant-p j))
3717	(is32 (acode-s32-constant-p i))
3718	(boolean (backend-crf-p vreg)))
3719	(multiple-value-bind (u8-operator u8-operand) (if other-u8 (x862-acode-operator-supports-u8 other-u8))
3720	(if u8-operator
3721	(x862-compare-u8 seg vreg xfer u8-operand u8 (if (and iu8 (not (eq cr-bit x86::x86-e-bits))) (logxor 1 cr-bit) cr-bit) true-p u8-operator)
3722	(if (and boolean (or js32 is32))
3723	(let* ((reg (x862-one-untargeted-reg-form seg (if js32 i j) x862-arg-z))
3724	(constant (or js32 is32)))
3725	(if (zerop constant)
3726	(! compare-reg-to-zero reg)
3727	(! compare-s32-constant reg (or js32 is32)))
3728	(unless (or js32 (eq cr-bit x86::x86-e-bits))
3729	(setq cr-bit (x862-reverse-cr-bit cr-bit)))
3730	(^ cr-bit true-p))
3731	(if (and ;(eq cr-bit x86::x86-e-bits)
3732	(or js32 is32))
3733	(progn
3734	(unless (or js32 (eq cr-bit x86::x86-e-bits))
3735	(setq cr-bit (x862-reverse-cr-bit cr-bit)))
3736	(x862-test-reg-%izerop
3737	seg
3738	vreg
3739	xfer
3740	(x862-one-untargeted-reg-form
3741	seg
3742	(if js32 i j)
3743	x862-arg-z)
3744	cr-bit
3745	true-p
3746	(or js32 is32)))
3747	(multiple-value-bind (ireg jreg) (x862-two-untargeted-reg-forms seg i x862-arg-y j x862-arg-z)
3748	(x862-compare-registers seg vreg xfer ireg jreg cr-bit true-p)))))))))
3749
3750	(defun x862-natural-compare (seg vreg xfer i j cr-bit true-p)
3751	(with-x86-local-vinsn-macros (seg vreg xfer)
3752	(let* ((jconstant (acode-fixnum-form-p j))
3753	(ju31 (typep jconstant '(unsigned-byte 31)))
3754	(iconstant (acode-fixnum-form-p i))
3755	(iu31 (typep iconstant '(unsigned-byte 31)))
3756	(boolean (backend-crf-p vreg)))
3757	(if (and boolean (or ju31 iu31))
3758	(with-imm-target
3759	() (reg :natural)
3760	(x862-one-targeted-reg-form seg (if ju31 i j) reg)
3761	(! compare-u31-constant reg (if ju31 jconstant iconstant))
3762	(unless (or ju31 (eq cr-bit x86::x86-e-bits))
3763	(setq cr-bit (x862-reverse-cr-bit cr-bit)))
3764	(^ cr-bit true-p))
3765	(with-imm-target () (ireg :natural)
3766	(with-additional-imm-reg ()
3767	(with-imm-target
3768	(ireg) (jreg :natural)
3769	(x862-two-targeted-reg-forms seg i ireg j jreg)
3770	(x862-compare-natural-registers seg vreg xfer ireg jreg cr-bit true-p))))))))
3771
3772
3773	(defun x862-cr-bit-for-logical-comparison (cr-bit true-p)
3774	(declare (fixnum cr-bit))
3775	(let* ((unsigned
3776	(case cr-bit
3777	(#.x86::x86-l-bits x86::x86-b-bits)
3778	(#.x86::x86-le-bits x86::x86-be-bits )
3779	(#.x86::x86-g-bits x86::x86-a-bits)
3780	(#.x86::x86-ge-bits x86::x86-ae-bits)
3781	(t cr-bit))))
3782	(declare (fixnum unsigned))
3783	(if true-p
3784	unsigned
3785	(logxor unsigned 1))))
3786
3787	(defun x862-compare-natural-registers (seg vreg xfer ireg jreg cr-bit true-p)
3788	(with-x86-local-vinsn-macros (seg vreg xfer)
3789	(if vreg
3790	(progn
3791	(setq cr-bit (x862-cr-bit-for-logical-comparison cr-bit true-p))
3792	(! compare ireg jreg)
3793	(regspec-crf-gpr-case
3794	(vreg dest)
3795	(^ cr-bit true-p)
3796	(progn
3797	(ensuring-node-target (target dest)
3798	(! cr-bit->boolean target cr-bit))
3799	(^))))
3800	(^))))
3801
3802
3803	(defun x862-compare-registers (seg vreg xfer ireg jreg cr-bit true-p)
3804	(with-x86-local-vinsn-macros (seg vreg xfer)
3805	(if vreg
3806	(progn
3807	(! compare ireg jreg)
3808	(regspec-crf-gpr-case
3809	(vreg dest)
3810	(^ cr-bit true-p)
3811	(progn
3812	(ensuring-node-target (target dest)
3813	(if (not true-p)
3814	(setq cr-bit (logxor 1 cr-bit)))
3815	(! cr-bit->boolean target cr-bit))
3816	(^))))
3817	(^))))
3818
3819	(defun x862-compare-register-to-constant (seg vreg xfer ireg cr-bit true-p constant)
3820	(cond ((eq constant nx-nil)
3821	(x862-compare-register-to-nil seg vreg xfer ireg cr-bit true-p))
3822	(t
3823	(with-x86-local-vinsn-macros (seg vreg xfer)
3824	(when vreg
3825	(if (eq constant nx-t)
3826	(! compare-to-t ireg)
3827	(let* ((imm (x862-immediate-operand constant))
3828	(reg (x862-register-constant-p imm)))
3829	(if reg
3830	(! compare-registers reg ireg)
3831	(! compare-constant-to-register (x86-immediate-label imm) ireg))))
3832	(regspec-crf-gpr-case
3833	(vreg dest)
3834	(^ cr-bit true-p)
3835	(progn
3836	(ensuring-node-target (target dest)
3837	(if (not true-p)
3838	(setq cr-bit (logxor 1 cr-bit)))
3839	(! cr-bit->boolean target cr-bit))
3840	(^))))))))
3841
3842	(defun x862-compare-register-to-nil (seg vreg xfer ireg cr-bit true-p)
3843	(with-x86-local-vinsn-macros (seg vreg xfer)
3844	(when vreg
3845	(! compare-to-nil ireg)
3846	(regspec-crf-gpr-case
3847	(vreg dest)
3848	(^ cr-bit true-p)
3849	(progn
3850	(ensuring-node-target (target dest)
3851	(if (not true-p)
3852	(setq cr-bit (logxor 1 cr-bit)))
3853	(! cr-bit->boolean target cr-bit))
3854	(^))))))
3855
3856	(defun x862-compare-ea-to-nil (seg vreg xfer ea cr-bit true-p)
3857	(with-x86-local-vinsn-macros (seg vreg xfer)
3858	(when vreg
3859	(if (addrspec-vcell-p ea)
3860	(with-node-target () temp
3861	(x862-stack-to-register seg ea temp)
3862	(! compare-value-cell-to-nil temp))
3863	(! compare-vframe-offset-to-nil (memspec-frame-address-offset ea) x862-vstack))
3864	(regspec-crf-gpr-case
3865	(vreg dest)
3866	(^ cr-bit true-p)
3867	(progn
3868	(ensuring-node-target (target dest)
3869	(if (not true-p)
3870	(setq cr-bit (logxor 1 cr-bit)))
3871	(! cr-bit->boolean target cr-bit))
3872	(^))))))
3873
3874	(defun x862-cr-bit-for-unsigned-comparison (cr-bit)
3875	(ecase cr-bit
3876	(#.x86::x86-e-bits #.x86::x86-e-bits)
3877	(#.x86::x86-ne-bits #.x86::x86-ne-bits)
3878	(#.x86::x86-l-bits #.x86::x86-b-bits)
3879	(#.x86::x86-le-bits #.x86::x86-be-bits)
3880	(#.x86::x86-ge-bits #.x86::x86-ae-bits)
3881	(#.x86::x86-g-bits #.x86::x86-a-bits)))
3882
3883
3884	(defun x862-compare-double-float-registers (seg vreg xfer ireg jreg cr-bit true-p)
3885	(with-x86-local-vinsn-macros (seg vreg xfer)
3886	(if vreg
3887	(progn
3888	(setq cr-bit (x862-cr-bit-for-unsigned-comparison cr-bit))
3889	(regspec-crf-gpr-case
3890	(vreg dest)
3891	(progn
3892	(! double-float-compare ireg jreg)
3893	(^ cr-bit true-p))
3894	(progn
3895	(! double-float-compare ireg jreg)
3896	(ensuring-node-target (target dest)
3897	(if (not true-p)
3898	(setq cr-bit (logxor 1 cr-bit)))
3899	(! cr-bit->boolean target cr-bit))
3900	(^))))
3901	(^))))
3902
3903	(defun x862-compare-single-float-registers (seg vreg xfer ireg jreg cr-bit true-p)
3904	(with-x86-local-vinsn-macros (seg vreg xfer)
3905	(if vreg
3906	(progn
3907	(setq cr-bit (x862-cr-bit-for-unsigned-comparison cr-bit))
3908	(regspec-crf-gpr-case
3909	(vreg dest)
3910	(progn
3911	(! single-float-compare ireg jreg)
3912	(^ cr-bit true-p))
3913	(progn
3914	(! single-float-compare ireg jreg)
3915	(ensuring-node-target (target dest)
3916	(if (not true-p)
3917	(setq cr-bit (logxor 1 cr-bit)))
3918	(! cr-bit->boolean target cr-bit))
3919	(^))))
3920	(^))))
3921
3922
3923	(defun x862-immediate-form-p (form)
3924	(if (and (consp form)
3925	(or (eq (%car form) (%nx1-operator immediate))
3926	(eq (%car form) (%nx1-operator simple-function))))
3927	t))
3928
3929	(defun x862-test-%izerop (seg vreg xfer form cr-bit true-p)
3930	(x862-test-reg-%izerop seg vreg xfer (x862-one-untargeted-reg-form seg form x862-arg-z) cr-bit true-p 0))
3931
3932	(defun x862-test-reg-%izerop (seg vreg xfer reg cr-bit true-p zero)
3933	(declare (fixnum zero))
3934	(with-x86-local-vinsn-macros (seg vreg xfer)
3935	(if (zerop zero)
3936	(! compare-reg-to-zero reg)
3937	(! compare-s32-constant reg zero))
3938	(regspec-crf-gpr-case
3939	(vreg dest)
3940	(^ cr-bit true-p)
3941	(progn
3942	(ensuring-node-target (target dest)
3943	(if (not true-p)
3944	(setq cr-bit (logxor 1 cr-bit)))
3945	(! cr-bit->boolean target cr-bit))
3946	(^)))))
3947
3948	(defun x862-lexical-reference-ea (form &optional (no-closed-p t))
3949	(when (acode-p (setq form (acode-unwrapped-form-value form)))
3950	(if (eq (acode-operator form) (%nx1-operator lexical-reference))
3951	(let* ((addr (var-ea (%cadr form))))
3952	(if (typep addr 'lreg)
3953	addr
3954	(unless (and no-closed-p (addrspec-vcell-p addr ))
3955	addr))))))
3956
3957
3958	(defun x862-vpush-register (seg src &optional why info attr)
3959	(with-x86-local-vinsn-macros (seg)
3960	(prog1
3961	(! vpush-register src)
3962	(setq x862-tos-reg src)
3963	(x862-new-vstack-lcell (or why :node) x862-target-lcell-size (or attr 0) info)
3964	(x862-adjust-vstack x862-target-node-size))))
3965
3966
3967	;;; Need to track stack usage when pushing label for mv-call.
3968	(defun x862-vpush-label (seg label)
3969	(with-x86-local-vinsn-macros (seg)
3970	(prog1
3971	(! vpush-label label)
3972	(x862-new-vstack-lcell :label x862-target-lcell-size 0 nil)
3973	(x862-adjust-vstack x862-target-node-size))))
3974
3975	(defun x862-temp-push-node (seg reg)
3976	(with-x86-local-vinsn-macros (seg)
3977	(! temp-push-node reg)
3978	(x862-open-undo $undostkblk)))
3979
3980	(defun x862-temp-pop-node (seg reg)
3981	(with-x86-local-vinsn-macros (seg)
3982	(! temp-pop-node reg)
3983	(x862-close-undo)))
3984
3985	(defun x862-vpush-register-arg (seg src)
3986	(x862-vpush-register seg src :outgoing-argument))
3987
3988
3989	(defun x862-vpop-register (seg dest)
3990	(with-x86-local-vinsn-macros (seg)
3991	(prog1
3992	(! vpop-register dest)
3993	(setq x862-top-vstack-lcell (lcell-parent x862-top-vstack-lcell))
3994	(x862-adjust-vstack (- x862-target-node-size)))))
3995
3996	(defun x862-macptr->heap (seg dest src)
3997	(with-x86-local-vinsn-macros (seg)
3998	(! setup-macptr-allocation src)
3999	(! %allocate-uvector dest)
4000	(! %set-new-macptr-value dest)))
4001
4002	(defun x862-copy-register (seg dest src)
4003	(with-x86-local-vinsn-macros (seg)
4004	(when dest
4005	(let* ((dest-gpr (backend-ea-physical-reg dest hard-reg-class-gpr))
4006	(src-gpr (if src (backend-ea-physical-reg src hard-reg-class-gpr)))
4007	(dest-fpr (backend-ea-physical-reg dest hard-reg-class-fpr))
4008	(src-fpr (if src (backend-ea-physical-reg src hard-reg-class-fpr)))
4009	(src-mode (if src (get-regspec-mode src)))
4010	(dest-mode (get-regspec-mode dest))
4011	(dest-crf (backend-ea-physical-reg dest hard-reg-class-crf)))
4012	(if (null src)
4013	(if dest-gpr
4014	(! load-nil dest-gpr)
4015	(if dest-crf
4016	(! set-eq-bit)))
4017	(if (and dest-crf src-gpr)
4018	;; "Copying" a GPR to a CR field means comparing it to rnil
4019	(! compare-to-nil src)
4020	(if (and dest-gpr src-gpr)
4021	(if (eq src-mode dest-mode)
4022	(unless (eq src-gpr dest-gpr)
4023	(! copy-gpr dest src))
4024	;; This is the "GPR <- GPR" case. There are
4025	;; word-size dependencies, but there's also
4026	;; lots of redundancy here.
4027	(target-arch-case
4028	(:x8632
4029	(ecase dest-mode
4030	(#.hard-reg-class-gpr-mode-node ; boxed result.
4031	(case src-mode
4032	(#.hard-reg-class-gpr-mode-node
4033	(unless (eql dest-gpr src-gpr)
4034	(! copy-gpr dest src)))
4035	(#.hard-reg-class-gpr-mode-u32
4036	(x862-box-u32 seg dest src))
4037	(#.hard-reg-class-gpr-mode-s32
4038	(x862-box-s32 seg dest src))
4039	(#.hard-reg-class-gpr-mode-u16
4040	(! box-fixnum dest src))
4041	(#.hard-reg-class-gpr-mode-s16
4042	(! box-fixnum dest src))
4043	(#.hard-reg-class-gpr-mode-u8
4044	(! box-fixnum dest src))
4045	(#.hard-reg-class-gpr-mode-s8
4046	(! box-fixnum dest src))
4047	(#.hard-reg-class-gpr-mode-address
4048	(x862-macptr->heap seg dest src))))
4049	((#.hard-reg-class-gpr-mode-u32
4050	#.hard-reg-class-gpr-mode-address)
4051	(case src-mode
4052	(#.hard-reg-class-gpr-mode-node
4053	(let* ((src-type (get-node-regspec-type-modes src)))
4054	(declare (fixnum src-type))
4055	(case dest-mode
4056	(#.hard-reg-class-gpr-mode-u32
4057	(! unbox-u32 dest src))
4058	(#.hard-reg-class-gpr-mode-address
4059	(unless (or (logbitp #.hard-reg-class-gpr-mode-address src-type)
4060	x862-reckless)
4061	(! trap-unless-macptr src))
4062	(! deref-macptr dest src)))))
4063	((#.hard-reg-class-gpr-mode-u32
4064	#.hard-reg-class-gpr-mode-s32
4065	#.hard-reg-class-gpr-mode-address)
4066	(unless (eql dest-gpr src-gpr)
4067	(! copy-gpr dest src)))
4068	(#.hard-reg-class-gpr-mode-u16
4069	(! u16->u32 dest src))
4070	(#.hard-reg-class-gpr-mode-s16
4071	(! s16->s32 dest src))
4072	(#.hard-reg-class-gpr-mode-u8
4073	(! u8->u32 dest src))
4074	(#.hard-reg-class-gpr-mode-s8
4075	(! s8->s32 dest src))))
4076	(#.hard-reg-class-gpr-mode-s32
4077	(case src-mode
4078	(#.hard-reg-class-gpr-mode-node
4079	(! unbox-s32 dest src))
4080	((#.hard-reg-class-gpr-mode-u32
4081	#.hard-reg-class-gpr-mode-s32
4082	#.hard-reg-class-gpr-mode-address)
4083	(unless (eql dest-gpr src-gpr)
4084	(! copy-gpr dest src)))
4085	(#.hard-reg-class-gpr-mode-u16
4086	(! u16->u32 dest src))
4087	(#.hard-reg-class-gpr-mode-s16
4088	(! s16->s32 dest src))
4089	(#.hard-reg-class-gpr-mode-u8
4090	(! u8->u32 dest src))
4091	(#.hard-reg-class-gpr-mode-s8
4092	(! s8->s32 dest src))))
4093	(#.hard-reg-class-gpr-mode-u16
4094	(case src-mode
4095	(#.hard-reg-class-gpr-mode-node
4096	(! unbox-u16 dest src))
4097	((#.hard-reg-class-gpr-mode-u8
4098	#.hard-reg-class-gpr-mode-s8)
4099	(! u8->u32 dest src))
4100	(t
4101	(unless (eql dest-gpr src-gpr)
4102	(! copy-gpr dest src)))))
4103	(#.hard-reg-class-gpr-mode-s16
4104	(case src-mode
4105	(#.hard-reg-class-gpr-mode-node
4106	(! unbox-s16 dest src))
4107	(#.hard-reg-class-gpr-mode-s8
4108	(! s8->s32 dest src))
4109	(#.hard-reg-class-gpr-mode-u8
4110	(! u8->u32 dest src))
4111	(t
4112	(unless (eql dest-gpr src-gpr)
4113	(! copy-gpr dest src)))))
4114	(#.hard-reg-class-gpr-mode-u8
4115	(case src-mode
4116	(#.hard-reg-class-gpr-mode-node
4117	(if x862-reckless
4118	(! %unbox-u8 dest src)
4119	(! unbox-u8 dest src)))
4120	(t
4121	(unless (eql dest-gpr src-gpr)
4122	(! copy-gpr dest src)))))
4123	(#.hard-reg-class-gpr-mode-s8
4124	(case src-mode
4125	(#.hard-reg-class-gpr-mode-node
4126	(! unbox-s8 dest src))
4127	(t
4128	(unless (eql dest-gpr src-gpr)
4129	(! copy-gpr dest src)))))))
4130	(:x8664
4131	(ecase dest-mode
4132	(#.hard-reg-class-gpr-mode-node ; boxed result.
4133	(case src-mode
4134	(#.hard-reg-class-gpr-mode-node
4135	(unless (eql dest-gpr src-gpr)
4136	(! copy-gpr dest src)))
4137	(#.hard-reg-class-gpr-mode-u64
4138	(x862-box-u64 seg dest src))
4139	(#.hard-reg-class-gpr-mode-s64
4140	(x862-box-s64 seg dest src))
4141	(#.hard-reg-class-gpr-mode-u32
4142	(x862-box-u32 seg dest src))
4143	(#.hard-reg-class-gpr-mode-s32
4144	(x862-box-s32 seg dest src))
4145	(#.hard-reg-class-gpr-mode-u16
4146	(! box-fixnum dest src))
4147	(#.hard-reg-class-gpr-mode-s16
4148	(! box-fixnum dest src))
4149	(#.hard-reg-class-gpr-mode-u8
4150	(! box-fixnum dest src))
4151	(#.hard-reg-class-gpr-mode-s8
4152	(! box-fixnum dest src))
4153	(#.hard-reg-class-gpr-mode-address
4154	(x862-macptr->heap seg dest src))))
4155	((#.hard-reg-class-gpr-mode-u64
4156	#.hard-reg-class-gpr-mode-address)
4157	(case src-mode
4158	(#.hard-reg-class-gpr-mode-node
4159	(let* ((src-type (get-node-regspec-type-modes src)))
4160	(declare (fixnum src-type))
4161	(case dest-mode
4162	(#.hard-reg-class-gpr-mode-u64
4163	(! unbox-u64 dest src))
4164	(#.hard-reg-class-gpr-mode-address
4165	(unless (or (logbitp #.hard-reg-class-gpr-mode-address src-type)
4166	x862-reckless)
4167	(! trap-unless-macptr src))
4168	(! deref-macptr dest src)))))
4169	((#.hard-reg-class-gpr-mode-u64
4170	#.hard-reg-class-gpr-mode-s64
4171	#.hard-reg-class-gpr-mode-address)
4172	(unless (eql dest-gpr src-gpr)
4173	(! copy-gpr dest src)))
4174	((#.hard-reg-class-gpr-mode-u16
4175	#.hard-reg-class-gpr-mode-s16)
4176	(! u16->u32 dest src))
4177	((#.hard-reg-class-gpr-mode-u8
4178	#.hard-reg-class-gpr-mode-s8)
4179	(! u8->u32 dest src))))
4180	(#.hard-reg-class-gpr-mode-s64
4181	(case src-mode
4182	(#.hard-reg-class-gpr-mode-node
4183	(! unbox-s64 dest src))
4184	((#.hard-reg-class-gpr-mode-u64
4185	#.hard-reg-class-gpr-mode-s64
4186	#.hard-reg-class-gpr-mode-address)
4187	(unless (eql dest-gpr src-gpr)
4188	(! copy-gpr dest src)))
4189	((#.hard-reg-class-gpr-mode-u16
4190	#.hard-reg-class-gpr-mode-s16)
4191	(! s16->s32 dest src))
4192	((#.hard-reg-class-gpr-mode-u8
4193	#.hard-reg-class-gpr-mode-s8)
4194	(! s8->s32 dest src))))
4195	(#.hard-reg-class-gpr-mode-s32
4196	(case src-mode
4197	(#.hard-reg-class-gpr-mode-node
4198	(! unbox-s32 dest src))
4199	((#.hard-reg-class-gpr-mode-u32
4200	#.hard-reg-class-gpr-mode-s32
4201	#.hard-reg-class-gpr-mode-address)
4202	(unless (eql dest-gpr src-gpr)
4203	(! copy-gpr dest src)))
4204	(#.hard-reg-class-gpr-mode-u16
4205	(! u16->u32 dest src))
4206	(#.hard-reg-class-gpr-mode-s16
4207	(! s16->s32 dest src))
4208	(#.hard-reg-class-gpr-mode-u8
4209	(! u8->u32 dest src))
4210	(#.hard-reg-class-gpr-mode-s8
4211	(! s8->s32 dest src))))
4212	(#.hard-reg-class-gpr-mode-u32
4213	(case src-mode
4214	(#.hard-reg-class-gpr-mode-node
4215	(if x862-reckless
4216	(! %unbox-u32 dest src)
4217	(! unbox-u32 dest src)))
4218	((#.hard-reg-class-gpr-mode-u32
4219	#.hard-reg-class-gpr-mode-s32)
4220	(unless (eql dest-gpr src-gpr)
4221	(! copy-gpr