Commit | Line | Data |
---|---|---|
811d10f5 AW |
1 | ;;; TREE-IL -> GLIL compiler |
2 | ||
9dadfa47 | 3 | ;; Copyright (C) 2001,2008,2009,2010,2011 Free Software Foundation, Inc. |
811d10f5 | 4 | |
53befeb7 NJ |
5 | ;;;; This library is free software; you can redistribute it and/or |
6 | ;;;; modify it under the terms of the GNU Lesser General Public | |
7 | ;;;; License as published by the Free Software Foundation; either | |
8 | ;;;; version 3 of the License, or (at your option) any later version. | |
9 | ;;;; | |
10 | ;;;; This library is distributed in the hope that it will be useful, | |
11 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | ;;;; Lesser General Public License for more details. | |
14 | ;;;; | |
15 | ;;;; You should have received a copy of the GNU Lesser General Public | |
16 | ;;;; License along with this library; if not, write to the Free Software | |
17 | ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
811d10f5 AW |
18 | |
19 | ;;; Code: | |
20 | ||
21 | (define-module (language tree-il compile-glil) | |
22 | #:use-module (system base syntax) | |
66d3e9a3 | 23 | #:use-module (system base pmatch) |
4b856371 | 24 | #:use-module (system base message) |
cf10678f | 25 | #:use-module (ice-9 receive) |
811d10f5 | 26 | #:use-module (language glil) |
60ed31d2 | 27 | #:use-module (system vm instruction) |
811d10f5 | 28 | #:use-module (language tree-il) |
073bb617 | 29 | #:use-module (language tree-il optimize) |
b275fb26 | 30 | #:use-module (language tree-il canonicalize) |
cf10678f | 31 | #:use-module (language tree-il analyze) |
48b1db75 | 32 | #:use-module ((srfi srfi-1) #:select (filter-map)) |
811d10f5 AW |
33 | #:export (compile-glil)) |
34 | ||
073bb617 | 35 | ;; allocation: |
66d3e9a3 | 36 | ;; sym -> {lambda -> address} |
8a4ca0ea AW |
37 | ;; lambda -> (labels . free-locs) |
38 | ;; lambda-case -> (gensym . nlocs) | |
66d3e9a3 | 39 | ;; |
8a4ca0ea AW |
40 | ;; address ::= (local? boxed? . index) |
41 | ;; labels ::= ((sym . lambda) ...) | |
66d3e9a3 AW |
42 | ;; free-locs ::= ((sym0 . address0) (sym1 . address1) ...) |
43 | ;; free variable addresses are relative to parent proc. | |
073bb617 | 44 | |
a1a482e0 AW |
45 | (define *comp-module* (make-fluid)) |
46 | ||
4b856371 | 47 | (define %warning-passes |
48b1db75 | 48 | `((unused-variable . ,unused-variable-analysis) |
bcae9a98 | 49 | (unused-toplevel . ,unused-toplevel-analysis) |
ae03cf1f | 50 | (unbound-variable . ,unbound-variable-analysis) |
75365375 LC |
51 | (arity-mismatch . ,arity-analysis) |
52 | (format . ,format-analysis))) | |
4b856371 | 53 | |
811d10f5 | 54 | (define (compile-glil x e opts) |
4b856371 LC |
55 | (define warnings |
56 | (or (and=> (memq #:warnings opts) cadr) | |
57 | '())) | |
58 | ||
43eb8aca | 59 | ;; Go through the warning passes. |
48b1db75 LC |
60 | (let ((analyses (filter-map (lambda (kind) |
61 | (assoc-ref %warning-passes kind)) | |
62 | warnings))) | |
63 | (analyze-tree analyses x e)) | |
aaae0d5a | 64 | |
8a4ca0ea | 65 | (let* ((x (make-lambda (tree-il-src x) '() |
1e2a8edb | 66 | (make-lambda-case #f '() #f #f #f '() '() x #f))) |
aaae0d5a | 67 | (x (optimize! x e opts)) |
b275fb26 | 68 | (x (canonicalize! x)) |
aaae0d5a | 69 | (allocation (analyze-lexicals x))) |
4b856371 | 70 | |
eddd16d7 AW |
71 | (with-fluids ((*comp-module* e)) |
72 | (values (flatten-lambda x #f allocation) | |
73 | e | |
74 | e)))) | |
811d10f5 AW |
75 | |
76 | \f | |
811d10f5 | 77 | |
112edbae AW |
78 | (define *primcall-ops* (make-hash-table)) |
79 | (for-each | |
80 | (lambda (x) (hash-set! *primcall-ops* (car x) (cdr x))) | |
81 | '(((eq? . 2) . eq?) | |
82 | ((eqv? . 2) . eqv?) | |
83 | ((equal? . 2) . equal?) | |
84 | ((= . 2) . ee?) | |
85 | ((< . 2) . lt?) | |
86 | ((> . 2) . gt?) | |
87 | ((<= . 2) . le?) | |
88 | ((>= . 2) . ge?) | |
89 | ((+ . 2) . add) | |
90 | ((- . 2) . sub) | |
7382f23e AW |
91 | ((1+ . 1) . add1) |
92 | ((1- . 1) . sub1) | |
112edbae AW |
93 | ((* . 2) . mul) |
94 | ((/ . 2) . div) | |
95 | ((quotient . 2) . quo) | |
96 | ((remainder . 2) . rem) | |
97 | ((modulo . 2) . mod) | |
b10d9330 AW |
98 | ((ash . 2) . ash) |
99 | ((logand . 2) . logand) | |
100 | ((logior . 2) . logior) | |
101 | ((logxor . 2) . logxor) | |
112edbae AW |
102 | ((not . 1) . not) |
103 | ((pair? . 1) . pair?) | |
104 | ((cons . 2) . cons) | |
105 | ((car . 1) . car) | |
106 | ((cdr . 1) . cdr) | |
107 | ((set-car! . 2) . set-car!) | |
108 | ((set-cdr! . 2) . set-cdr!) | |
109 | ((null? . 1) . null?) | |
c11f46af | 110 | ((list? . 1) . list?) |
cf45ff03 AW |
111 | ((symbol? . 1) . symbol?) |
112 | ((vector? . 1) . vector?) | |
c11f46af | 113 | (list . list) |
ad9b8c45 | 114 | (vector . vector) |
aec4a84a | 115 | ((class-of . 1) . class-of) |
ad9b8c45 | 116 | ((@slot-ref . 2) . slot-ref) |
d6f1ce3d AW |
117 | ((@slot-set! . 3) . slot-set) |
118 | ((vector-ref . 2) . vector-ref) | |
119 | ((vector-set! . 3) . vector-set) | |
1d30393f AW |
120 | ((variable-ref . 1) . variable-ref) |
121 | ;; nb, *not* variable-set! -- the args are switched | |
d27a7811 | 122 | ((variable-bound? . 1) . variable-bound?) |
bd91ecce LC |
123 | ((struct? . 1) . struct?) |
124 | ((struct-vtable . 1) . struct-vtable) | |
a752c0dc LC |
125 | ((struct-ref . 2) . struct-ref) |
126 | ((struct-set! . 3) . struct-set) | |
9a974fd3 | 127 | (make-struct/no-tail . make-struct) |
39141c87 | 128 | |
d61e866c | 129 | ;; hack for javascript |
52272fc7 | 130 | ((return . 1) . return) |
9582b26c AW |
131 | ;; hack for lua |
132 | (return/values . return/values) | |
d61e866c | 133 | |
39141c87 AW |
134 | ((bytevector-u8-ref . 2) . bv-u8-ref) |
135 | ((bytevector-u8-set! . 3) . bv-u8-set) | |
136 | ((bytevector-s8-ref . 2) . bv-s8-ref) | |
137 | ((bytevector-s8-set! . 3) . bv-s8-set) | |
138 | ||
139 | ((bytevector-u16-ref . 3) . bv-u16-ref) | |
140 | ((bytevector-u16-set! . 4) . bv-u16-set) | |
141 | ((bytevector-u16-native-ref . 2) . bv-u16-native-ref) | |
142 | ((bytevector-u16-native-set! . 3) . bv-u16-native-set) | |
143 | ((bytevector-s16-ref . 3) . bv-s16-ref) | |
144 | ((bytevector-s16-set! . 4) . bv-s16-set) | |
145 | ((bytevector-s16-native-ref . 2) . bv-s16-native-ref) | |
146 | ((bytevector-s16-native-set! . 3) . bv-s16-native-set) | |
147 | ||
148 | ((bytevector-u32-ref . 3) . bv-u32-ref) | |
149 | ((bytevector-u32-set! . 4) . bv-u32-set) | |
150 | ((bytevector-u32-native-ref . 2) . bv-u32-native-ref) | |
151 | ((bytevector-u32-native-set! . 3) . bv-u32-native-set) | |
152 | ((bytevector-s32-ref . 3) . bv-s32-ref) | |
153 | ((bytevector-s32-set! . 4) . bv-s32-set) | |
154 | ((bytevector-s32-native-ref . 2) . bv-s32-native-ref) | |
155 | ((bytevector-s32-native-set! . 3) . bv-s32-native-set) | |
156 | ||
157 | ((bytevector-u64-ref . 3) . bv-u64-ref) | |
158 | ((bytevector-u64-set! . 4) . bv-u64-set) | |
159 | ((bytevector-u64-native-ref . 2) . bv-u64-native-ref) | |
160 | ((bytevector-u64-native-set! . 3) . bv-u64-native-set) | |
161 | ((bytevector-s64-ref . 3) . bv-s64-ref) | |
162 | ((bytevector-s64-set! . 4) . bv-s64-set) | |
163 | ((bytevector-s64-native-ref . 2) . bv-s64-native-ref) | |
164 | ((bytevector-s64-native-set! . 3) . bv-s64-native-set) | |
165 | ||
166 | ((bytevector-ieee-single-ref . 3) . bv-f32-ref) | |
167 | ((bytevector-ieee-single-set! . 4) . bv-f32-set) | |
168 | ((bytevector-ieee-single-native-ref . 2) . bv-f32-native-ref) | |
169 | ((bytevector-ieee-single-native-set! . 3) . bv-f32-native-set) | |
170 | ((bytevector-ieee-double-ref . 3) . bv-f64-ref) | |
171 | ((bytevector-ieee-double-set! . 4) . bv-f64-set) | |
172 | ((bytevector-ieee-double-native-ref . 2) . bv-f64-native-ref) | |
173 | ((bytevector-ieee-double-native-set! . 3) . bv-f64-native-set))) | |
174 | ||
175 | ||
176 | \f | |
112edbae | 177 | |
811d10f5 AW |
178 | (define (make-label) (gensym ":L")) |
179 | ||
66d3e9a3 | 180 | (define (vars->bind-list ids vars allocation proc) |
2ce77f2d | 181 | (map (lambda (id v) |
66d3e9a3 AW |
182 | (pmatch (hashq-ref (hashq-ref allocation v) proc) |
183 | ((#t ,boxed? . ,n) | |
184 | (list id boxed? n)) | |
3b24aee6 | 185 | (,x (error "bad var list element" id v x)))) |
2ce77f2d | 186 | ids |
cf10678f AW |
187 | vars)) |
188 | ||
66d3e9a3 | 189 | (define (emit-bindings src ids vars allocation proc emit-code) |
d97b69d9 AW |
190 | (emit-code src (make-glil-bind |
191 | (vars->bind-list ids vars allocation proc)))) | |
cf10678f AW |
192 | |
193 | (define (with-output-to-code proc) | |
194 | (let ((out '())) | |
195 | (define (emit-code src x) | |
196 | (set! out (cons x out)) | |
197 | (if src | |
198 | (set! out (cons (make-glil-source src) out)))) | |
199 | (proc emit-code) | |
200 | (reverse out))) | |
201 | ||
9b29d607 | 202 | (define (flatten-lambda x self-label allocation) |
8a4ca0ea AW |
203 | (record-case x |
204 | ((<lambda> src meta body) | |
205 | (make-glil-program | |
206 | meta | |
207 | (with-output-to-code | |
208 | (lambda (emit-code) | |
209 | ;; write source info for proc | |
210 | (if src (emit-code #f (make-glil-source src))) | |
8a4ca0ea | 211 | ;; compile the body, yo |
0083cb5e AW |
212 | (flatten-lambda-case body allocation x self-label |
213 | (car (hashq-ref allocation x)) | |
214 | emit-code))))))) | |
cf10678f | 215 | |
0083cb5e AW |
216 | (define (flatten-lambda-case lcase allocation self self-label fix-labels |
217 | emit-code) | |
cf10678f AW |
218 | (define (emit-label label) |
219 | (emit-code #f (make-glil-label label))) | |
220 | (define (emit-branch src inst label) | |
221 | (emit-code src (make-glil-branch inst label))) | |
222 | ||
230cfcfb AW |
223 | ;; RA: "return address"; #f unless we're in a non-tail fix with labels |
224 | ;; MVRA: "multiple-values return address"; #f unless we're in a let-values | |
0083cb5e | 225 | (let comp ((x lcase) (context 'tail) (RA #f) (MVRA #f)) |
230cfcfb AW |
226 | (define (comp-tail tree) (comp tree context RA MVRA)) |
227 | (define (comp-push tree) (comp tree 'push #f #f)) | |
228 | (define (comp-drop tree) (comp tree 'drop #f #f)) | |
229 | (define (comp-vals tree MVRA) (comp tree 'vals #f MVRA)) | |
230 | (define (comp-fix tree RA) (comp tree context RA MVRA)) | |
231 | ||
232 | ;; A couple of helpers. Note that if we are in tail context, we | |
233 | ;; won't have an RA. | |
234 | (define (maybe-emit-return) | |
235 | (if RA | |
236 | (emit-branch #f 'br RA) | |
237 | (if (eq? context 'tail) | |
238 | (emit-code #f (make-glil-call 'return 1))))) | |
239 | ||
fb135e12 AW |
240 | ;; After lexical binding forms in non-tail context, call this |
241 | ;; function to clear stack slots, allowing their previous values to | |
242 | ;; be collected. | |
243 | (define (clear-stack-slots context syms) | |
244 | (case context | |
245 | ((push drop) | |
246 | (for-each (lambda (v) | |
247 | (and=> | |
248 | ;; Can be #f if the var is labels-allocated. | |
249 | (hashq-ref allocation v) | |
250 | (lambda (h) | |
251 | (pmatch (hashq-ref h self) | |
252 | ((#t _ . ,n) | |
253 | (emit-code #f (make-glil-void)) | |
254 | (emit-code #f (make-glil-lexical #t #f 'set n))) | |
255 | (,loc (error "bad let var allocation" x loc)))))) | |
256 | syms)))) | |
257 | ||
cf10678f AW |
258 | (record-case x |
259 | ((<void>) | |
260 | (case context | |
230cfcfb AW |
261 | ((push vals tail) |
262 | (emit-code #f (make-glil-void)))) | |
263 | (maybe-emit-return)) | |
cf10678f AW |
264 | |
265 | ((<const> src exp) | |
266 | (case context | |
230cfcfb AW |
267 | ((push vals tail) |
268 | (emit-code src (make-glil-const exp)))) | |
269 | (maybe-emit-return)) | |
cf10678f AW |
270 | |
271 | ;; FIXME: should represent sequence as exps tail | |
e5f5113c | 272 | ((<sequence> exps) |
cf10678f AW |
273 | (let lp ((exps exps)) |
274 | (if (null? (cdr exps)) | |
275 | (comp-tail (car exps)) | |
276 | (begin | |
277 | (comp-drop (car exps)) | |
278 | (lp (cdr exps)))))) | |
279 | ||
280 | ((<application> src proc args) | |
dce042f1 | 281 | ;; FIXME: need a better pattern-matcher here |
112edbae | 282 | (cond |
dce042f1 AW |
283 | ((and (primitive-ref? proc) |
284 | (eq? (primitive-ref-name proc) '@apply) | |
0f423f20 | 285 | (>= (length args) 1)) |
dce042f1 AW |
286 | (let ((proc (car args)) |
287 | (args (cdr args))) | |
288 | (cond | |
289 | ((and (primitive-ref? proc) (eq? (primitive-ref-name proc) 'values) | |
f4aa8d53 | 290 | (not (eq? context 'push)) (not (eq? context 'vals))) |
dce042f1 AW |
291 | ;; tail: (lambda () (apply values '(1 2))) |
292 | ;; drop: (lambda () (apply values '(1 2)) 3) | |
293 | ;; push: (lambda () (list (apply values '(10 12)) 1)) | |
294 | (case context | |
230cfcfb | 295 | ((drop) (for-each comp-drop args) (maybe-emit-return)) |
dce042f1 AW |
296 | ((tail) |
297 | (for-each comp-push args) | |
298 | (emit-code src (make-glil-call 'return/values* (length args)))))) | |
299 | ||
300 | (else | |
dce042f1 | 301 | (case context |
0f423f20 AW |
302 | ((tail) |
303 | (comp-push proc) | |
304 | (for-each comp-push args) | |
a5bbb22e | 305 | (emit-code src (make-glil-call 'tail-apply (1+ (length args))))) |
0f423f20 | 306 | ((push) |
b7946e9e | 307 | (emit-code src (make-glil-call 'new-frame 0)) |
0f423f20 AW |
308 | (comp-push proc) |
309 | (for-each comp-push args) | |
230cfcfb AW |
310 | (emit-code src (make-glil-call 'apply (1+ (length args)))) |
311 | (maybe-emit-return)) | |
f4aa8d53 AW |
312 | ((vals) |
313 | (comp-vals | |
314 | (make-application src (make-primitive-ref #f 'apply) | |
315 | (cons proc args)) | |
230cfcfb AW |
316 | MVRA) |
317 | (maybe-emit-return)) | |
0f423f20 AW |
318 | ((drop) |
319 | ;; Well, shit. The proc might return any number of | |
320 | ;; values (including 0), since it's in a drop context, | |
321 | ;; yet apply does not create a MV continuation. So we | |
322 | ;; mv-call out to our trampoline instead. | |
323 | (comp-drop | |
324 | (make-application src (make-primitive-ref #f 'apply) | |
230cfcfb AW |
325 | (cons proc args))) |
326 | (maybe-emit-return))))))) | |
327 | ||
b88fef55 | 328 | ((and (primitive-ref? proc) (eq? (primitive-ref-name proc) 'values)) |
a1a482e0 AW |
329 | ;; tail: (lambda () (values '(1 2))) |
330 | ;; drop: (lambda () (values '(1 2)) 3) | |
331 | ;; push: (lambda () (list (values '(10 12)) 1)) | |
f4aa8d53 | 332 | ;; vals: (let-values (((a b ...) (values 1 2 ...))) ...) |
a1a482e0 | 333 | (case context |
230cfcfb | 334 | ((drop) (for-each comp-drop args) (maybe-emit-return)) |
b88fef55 AW |
335 | ((push) |
336 | (case (length args) | |
337 | ((0) | |
338 | ;; FIXME: This is surely an error. We need to add a | |
339 | ;; values-mismatch warning pass. | |
340 | (emit-code src (make-glil-call 'new-frame 0)) | |
341 | (comp-push proc) | |
342 | (emit-code src (make-glil-call 'call 0)) | |
343 | (maybe-emit-return)) | |
344 | ((1) | |
345 | (comp-push (car args))) | |
346 | (else | |
347 | ;; Taking advantage of unspecified order of evaluation of | |
348 | ;; arguments. | |
349 | (for-each comp-drop (cdr args)) | |
350 | (comp-push (car args))))) | |
f4aa8d53 AW |
351 | ((vals) |
352 | (for-each comp-push args) | |
353 | (emit-code #f (make-glil-const (length args))) | |
230cfcfb | 354 | (emit-branch src 'br MVRA)) |
a1a482e0 AW |
355 | ((tail) |
356 | (for-each comp-push args) | |
b88fef55 AW |
357 | (emit-code src (let ((len (length args))) |
358 | (if (= len 1) | |
359 | (make-glil-call 'return 1) | |
360 | (make-glil-call 'return/values len))))))) | |
f4aa8d53 | 361 | |
dce042f1 AW |
362 | ((and (primitive-ref? proc) |
363 | (eq? (primitive-ref-name proc) '@call-with-values) | |
364 | (= (length args) 2)) | |
365 | ;; CONSUMER | |
366 | ;; PRODUCER | |
367 | ;; (mv-call MV) | |
368 | ;; ([tail]-call 1) | |
369 | ;; goto POST | |
370 | ;; MV: [tail-]call/nargs | |
371 | ;; POST: (maybe-drop) | |
f4aa8d53 AW |
372 | (case context |
373 | ((vals) | |
374 | ;; Fall back. | |
375 | (comp-vals | |
376 | (make-application src (make-primitive-ref #f 'call-with-values) | |
377 | args) | |
230cfcfb AW |
378 | MVRA) |
379 | (maybe-emit-return)) | |
f4aa8d53 AW |
380 | (else |
381 | (let ((MV (make-label)) (POST (make-label)) | |
382 | (producer (car args)) (consumer (cadr args))) | |
b7946e9e AW |
383 | (if (not (eq? context 'tail)) |
384 | (emit-code src (make-glil-call 'new-frame 0))) | |
f4aa8d53 | 385 | (comp-push consumer) |
b7946e9e | 386 | (emit-code src (make-glil-call 'new-frame 0)) |
f4aa8d53 AW |
387 | (comp-push producer) |
388 | (emit-code src (make-glil-mv-call 0 MV)) | |
389 | (case context | |
a5bbb22e | 390 | ((tail) (emit-code src (make-glil-call 'tail-call 1))) |
f4aa8d53 AW |
391 | (else (emit-code src (make-glil-call 'call 1)) |
392 | (emit-branch #f 'br POST))) | |
393 | (emit-label MV) | |
394 | (case context | |
a5bbb22e | 395 | ((tail) (emit-code src (make-glil-call 'tail-call/nargs 0))) |
f4aa8d53 AW |
396 | (else (emit-code src (make-glil-call 'call/nargs 0)) |
397 | (emit-label POST) | |
398 | (if (eq? context 'drop) | |
230cfcfb AW |
399 | (emit-code #f (make-glil-call 'drop 1))) |
400 | (maybe-emit-return))))))) | |
dce042f1 AW |
401 | |
402 | ((and (primitive-ref? proc) | |
403 | (eq? (primitive-ref-name proc) '@call-with-current-continuation) | |
e32a1792 | 404 | (= (length args) 1)) |
dce042f1 | 405 | (case context |
0f423f20 AW |
406 | ((tail) |
407 | (comp-push (car args)) | |
a5bbb22e | 408 | (emit-code src (make-glil-call 'tail-call/cc 1))) |
f4aa8d53 AW |
409 | ((vals) |
410 | (comp-vals | |
411 | (make-application | |
412 | src (make-primitive-ref #f 'call-with-current-continuation) | |
413 | args) | |
230cfcfb AW |
414 | MVRA) |
415 | (maybe-emit-return)) | |
0f423f20 AW |
416 | ((push) |
417 | (comp-push (car args)) | |
230cfcfb AW |
418 | (emit-code src (make-glil-call 'call/cc 1)) |
419 | (maybe-emit-return)) | |
0f423f20 AW |
420 | ((drop) |
421 | ;; Crap. Just like `apply' in drop context. | |
422 | (comp-drop | |
423 | (make-application | |
424 | src (make-primitive-ref #f 'call-with-current-continuation) | |
230cfcfb AW |
425 | args)) |
426 | (maybe-emit-return)))) | |
dce042f1 | 427 | |
9b3cc659 AW |
428 | ;; A hack for variable-set, the opcode for which takes its args |
429 | ;; reversed, relative to the variable-set! function | |
430 | ((and (primitive-ref? proc) | |
431 | (eq? (primitive-ref-name proc) 'variable-set!) | |
432 | (= (length args) 2)) | |
433 | (comp-push (cadr args)) | |
434 | (comp-push (car args)) | |
435 | (emit-code src (make-glil-call 'variable-set 2)) | |
436 | (case context | |
437 | ((tail push vals) (emit-code #f (make-glil-void)))) | |
438 | (maybe-emit-return)) | |
439 | ||
112edbae | 440 | ((and (primitive-ref? proc) |
c11f46af AW |
441 | (or (hash-ref *primcall-ops* |
442 | (cons (primitive-ref-name proc) (length args))) | |
443 | (hash-ref *primcall-ops* (primitive-ref-name proc)))) | |
112edbae AW |
444 | => (lambda (op) |
445 | (for-each comp-push args) | |
446 | (emit-code src (make-glil-call op (length args))) | |
60ed31d2 AW |
447 | (case (instruction-pushes op) |
448 | ((0) | |
449 | (case context | |
230cfcfb AW |
450 | ((tail push vals) (emit-code #f (make-glil-void)))) |
451 | (maybe-emit-return)) | |
60ed31d2 AW |
452 | ((1) |
453 | (case context | |
230cfcfb AW |
454 | ((drop) (emit-code #f (make-glil-call 'drop 1)))) |
455 | (maybe-emit-return)) | |
9582b26c AW |
456 | ((-1) |
457 | ;; A control instruction, like return/values. Here we | |
458 | ;; just have to hope that the author of the tree-il | |
459 | ;; knew what they were doing. | |
460 | *unspecified*) | |
60ed31d2 AW |
461 | (else |
462 | (error "bad primitive op: too many pushes" | |
463 | op (instruction-pushes op)))))) | |
464 | ||
0083cb5e | 465 | ;; call to the same lambda-case in tail position |
9b29d607 AW |
466 | ((and (lexical-ref? proc) |
467 | self-label (eq? (lexical-ref-gensym proc) self-label) | |
0083cb5e AW |
468 | (eq? context 'tail) |
469 | (not (lambda-case-kw lcase)) | |
470 | (not (lambda-case-rest lcase)) | |
471 | (= (length args) | |
472 | (+ (length (lambda-case-req lcase)) | |
473 | (or (and=> (lambda-case-opt lcase) length) 0)))) | |
474 | (for-each comp-push args) | |
475 | (for-each (lambda (sym) | |
476 | (pmatch (hashq-ref (hashq-ref allocation sym) self) | |
477 | ((#t #f . ,index) ; unboxed | |
478 | (emit-code #f (make-glil-lexical #t #f 'set index))) | |
479 | ((#t #t . ,index) ; boxed | |
480 | ;; new box | |
481 | (emit-code #f (make-glil-lexical #t #t 'box index))) | |
482 | (,x (error "bad lambda-case arg allocation" x)))) | |
483 | (reverse (lambda-case-gensyms lcase))) | |
484 | (emit-branch src 'br (car (hashq-ref allocation lcase)))) | |
9b29d607 | 485 | |
230cfcfb AW |
486 | ;; lambda, the ultimate goto |
487 | ((and (lexical-ref? proc) | |
488 | (assq (lexical-ref-gensym proc) fix-labels)) | |
8a4ca0ea AW |
489 | ;; like the self-tail-call case, though we can handle "drop" |
490 | ;; contexts too. first, evaluate new values, pushing them on | |
491 | ;; the stack | |
230cfcfb | 492 | (for-each comp-push args) |
8a4ca0ea AW |
493 | ;; find the specific case, rename args, and goto the case label |
494 | (let lp ((lcase (lambda-body | |
495 | (assq-ref fix-labels (lexical-ref-gensym proc))))) | |
496 | (cond | |
497 | ((and (lambda-case? lcase) | |
498 | (not (lambda-case-kw lcase)) | |
499 | (not (lambda-case-opt lcase)) | |
500 | (not (lambda-case-rest lcase)) | |
501 | (= (length args) (length (lambda-case-req lcase)))) | |
502 | ;; we have a case that matches the args; rename variables | |
503 | ;; and goto the case label | |
504 | (for-each (lambda (sym) | |
505 | (pmatch (hashq-ref (hashq-ref allocation sym) self) | |
506 | ((#t #f . ,index) ; unboxed | |
507 | (emit-code #f (make-glil-lexical #t #f 'set index))) | |
508 | ((#t #t . ,index) ; boxed | |
509 | (emit-code #f (make-glil-lexical #t #t 'box index))) | |
3b24aee6 | 510 | (,x (error "bad lambda-case arg allocation" x)))) |
93f63467 | 511 | (reverse (lambda-case-gensyms lcase))) |
8a4ca0ea AW |
512 | (emit-branch src 'br (car (hashq-ref allocation lcase)))) |
513 | ((lambda-case? lcase) | |
514 | ;; no match, try next case | |
3a88cb3b | 515 | (lp (lambda-case-alternate lcase))) |
8a4ca0ea AW |
516 | (else |
517 | ;; no cases left. we can't really handle this currently. | |
518 | ;; ideally we would push on a new frame, then do a "local | |
519 | ;; call" -- which doesn't require consing up a program | |
520 | ;; object. but for now error, as this sort of case should | |
521 | ;; preclude label allocation. | |
522 | (error "couldn't find matching case for label call" x))))) | |
230cfcfb | 523 | |
112edbae | 524 | (else |
b7946e9e AW |
525 | (if (not (eq? context 'tail)) |
526 | (emit-code src (make-glil-call 'new-frame 0))) | |
112edbae AW |
527 | (comp-push proc) |
528 | (for-each comp-push args) | |
dce042f1 AW |
529 | (let ((len (length args))) |
530 | (case context | |
a5bbb22e | 531 | ((tail) (emit-code src (make-glil-call 'tail-call len))) |
230cfcfb AW |
532 | ((push) (emit-code src (make-glil-call 'call len)) |
533 | (maybe-emit-return)) | |
534 | ((vals) (emit-code src (make-glil-mv-call len MVRA)) | |
535 | (maybe-emit-return)) | |
536 | ((drop) (let ((MV (make-label)) (POST (make-label))) | |
537 | (emit-code src (make-glil-mv-call len MV)) | |
538 | (emit-code #f (make-glil-call 'drop 1)) | |
539 | (emit-branch #f 'br (or RA POST)) | |
540 | (emit-label MV) | |
05c51bcf | 541 | (emit-code #f (make-glil-mv-bind 0 #f)) |
230cfcfb AW |
542 | (if RA |
543 | (emit-branch #f 'br RA) | |
544 | (emit-label POST))))))))) | |
073bb617 | 545 | |
b6d93b11 | 546 | ((<conditional> src test consequent alternate) |
073bb617 AW |
547 | ;; TEST |
548 | ;; (br-if-not L1) | |
b6d93b11 | 549 | ;; consequent |
073bb617 | 550 | ;; (br L2) |
b6d93b11 | 551 | ;; L1: alternate |
073bb617 AW |
552 | ;; L2: |
553 | (let ((L1 (make-label)) (L2 (make-label))) | |
b4a595a5 AW |
554 | ;; need a pattern matcher |
555 | (record-case test | |
556 | ((<application> proc args) | |
557 | (record-case proc | |
558 | ((<primitive-ref> name) | |
559 | (let ((len (length args))) | |
560 | (cond | |
561 | ||
562 | ((and (eq? name 'eq?) (= len 2)) | |
563 | (comp-push (car args)) | |
564 | (comp-push (cadr args)) | |
565 | (emit-branch src 'br-if-not-eq L1)) | |
566 | ||
567 | ((and (eq? name 'null?) (= len 1)) | |
568 | (comp-push (car args)) | |
569 | (emit-branch src 'br-if-not-null L1)) | |
570 | ||
571 | ((and (eq? name 'not) (= len 1)) | |
572 | (let ((app (car args))) | |
573 | (record-case app | |
574 | ((<application> proc args) | |
575 | (let ((len (length args))) | |
576 | (record-case proc | |
577 | ((<primitive-ref> name) | |
578 | (cond | |
579 | ||
580 | ((and (eq? name 'eq?) (= len 2)) | |
581 | (comp-push (car args)) | |
582 | (comp-push (cadr args)) | |
583 | (emit-branch src 'br-if-eq L1)) | |
584 | ||
585 | ((and (eq? name 'null?) (= len 1)) | |
586 | (comp-push (car args)) | |
587 | (emit-branch src 'br-if-null L1)) | |
588 | ||
589 | (else | |
590 | (comp-push app) | |
591 | (emit-branch src 'br-if L1)))) | |
592 | (else | |
593 | (comp-push app) | |
594 | (emit-branch src 'br-if L1))))) | |
595 | (else | |
596 | (comp-push app) | |
597 | (emit-branch src 'br-if L1))))) | |
598 | ||
599 | (else | |
600 | (comp-push test) | |
601 | (emit-branch src 'br-if-not L1))))) | |
602 | (else | |
603 | (comp-push test) | |
604 | (emit-branch src 'br-if-not L1)))) | |
605 | (else | |
606 | (comp-push test) | |
607 | (emit-branch src 'br-if-not L1))) | |
608 | ||
b6d93b11 | 609 | (comp-tail consequent) |
d97b69d9 AW |
610 | ;; if there is an RA, comp-tail will cause a jump to it -- just |
611 | ;; have to clean up here if there is no RA. | |
612 | (if (and (not RA) (not (eq? context 'tail))) | |
613 | (emit-branch #f 'br L2)) | |
cf10678f | 614 | (emit-label L1) |
b4a595a5 | 615 | (comp-tail alternate) |
d97b69d9 AW |
616 | (if (and (not RA) (not (eq? context 'tail))) |
617 | (emit-label L2)))) | |
618 | ||
cf10678f | 619 | ((<primitive-ref> src name) |
a1a482e0 AW |
620 | (cond |
621 | ((eq? (module-variable (fluid-ref *comp-module*) name) | |
622 | (module-variable the-root-module name)) | |
623 | (case context | |
230cfcfb AW |
624 | ((tail push vals) |
625 | (emit-code src (make-glil-toplevel 'ref name)))) | |
626 | (maybe-emit-return)) | |
94ff26b9 | 627 | ((module-variable the-root-module name) |
a1a482e0 | 628 | (case context |
230cfcfb AW |
629 | ((tail push vals) |
630 | (emit-code src (make-glil-module 'ref '(guile) name #f)))) | |
94ff26b9 AW |
631 | (maybe-emit-return)) |
632 | (else | |
633 | (case context | |
634 | ((tail push vals) | |
635 | (emit-code src (make-glil-module | |
636 | 'ref (module-name (fluid-ref *comp-module*)) name #f)))) | |
230cfcfb | 637 | (maybe-emit-return)))) |
cf10678f | 638 | |
e5f5113c | 639 | ((<lexical-ref> src gensym) |
cf10678f | 640 | (case context |
f4aa8d53 | 641 | ((push vals tail) |
9b29d607 | 642 | (pmatch (hashq-ref (hashq-ref allocation gensym) self) |
66d3e9a3 AW |
643 | ((,local? ,boxed? . ,index) |
644 | (emit-code src (make-glil-lexical local? boxed? 'ref index))) | |
645 | (,loc | |
3b24aee6 | 646 | (error "bad lexical allocation" x loc))))) |
230cfcfb | 647 | (maybe-emit-return)) |
66d3e9a3 | 648 | |
e5f5113c | 649 | ((<lexical-set> src gensym exp) |
cf10678f | 650 | (comp-push exp) |
9b29d607 | 651 | (pmatch (hashq-ref (hashq-ref allocation gensym) self) |
66d3e9a3 AW |
652 | ((,local? ,boxed? . ,index) |
653 | (emit-code src (make-glil-lexical local? boxed? 'set index))) | |
654 | (,loc | |
3b24aee6 | 655 | (error "bad lexical allocation" x loc))) |
cf10678f | 656 | (case context |
230cfcfb AW |
657 | ((tail push vals) |
658 | (emit-code #f (make-glil-void)))) | |
659 | (maybe-emit-return)) | |
cf10678f AW |
660 | |
661 | ((<module-ref> src mod name public?) | |
662 | (emit-code src (make-glil-module 'ref mod name public?)) | |
663 | (case context | |
230cfcfb AW |
664 | ((drop) (emit-code #f (make-glil-call 'drop 1)))) |
665 | (maybe-emit-return)) | |
cf10678f AW |
666 | |
667 | ((<module-set> src mod name public? exp) | |
668 | (comp-push exp) | |
669 | (emit-code src (make-glil-module 'set mod name public?)) | |
670 | (case context | |
230cfcfb AW |
671 | ((tail push vals) |
672 | (emit-code #f (make-glil-void)))) | |
673 | (maybe-emit-return)) | |
cf10678f AW |
674 | |
675 | ((<toplevel-ref> src name) | |
676 | (emit-code src (make-glil-toplevel 'ref name)) | |
677 | (case context | |
230cfcfb AW |
678 | ((drop) (emit-code #f (make-glil-call 'drop 1)))) |
679 | (maybe-emit-return)) | |
cf10678f AW |
680 | |
681 | ((<toplevel-set> src name exp) | |
682 | (comp-push exp) | |
683 | (emit-code src (make-glil-toplevel 'set name)) | |
684 | (case context | |
230cfcfb AW |
685 | ((tail push vals) |
686 | (emit-code #f (make-glil-void)))) | |
687 | (maybe-emit-return)) | |
cf10678f AW |
688 | |
689 | ((<toplevel-define> src name exp) | |
690 | (comp-push exp) | |
691 | (emit-code src (make-glil-toplevel 'define name)) | |
692 | (case context | |
230cfcfb AW |
693 | ((tail push vals) |
694 | (emit-code #f (make-glil-void)))) | |
695 | (maybe-emit-return)) | |
cf10678f AW |
696 | |
697 | ((<lambda>) | |
8a4ca0ea | 698 | (let ((free-locs (cdr (hashq-ref allocation x)))) |
66d3e9a3 AW |
699 | (case context |
700 | ((push vals tail) | |
9b29d607 | 701 | (emit-code #f (flatten-lambda x #f allocation)) |
66d3e9a3 AW |
702 | (if (not (null? free-locs)) |
703 | (begin | |
704 | (for-each | |
705 | (lambda (loc) | |
706 | (pmatch loc | |
d773ba23 | 707 | ((,local? ,boxed? . ,n) |
66d3e9a3 | 708 | (emit-code #f (make-glil-lexical local? #f 'ref n))) |
3b24aee6 | 709 | (else (error "bad lambda free var allocation" x loc)))) |
66d3e9a3 | 710 | free-locs) |
6f16379e AW |
711 | (emit-code #f (make-glil-call 'make-closure |
712 | (length free-locs)))))))) | |
230cfcfb | 713 | (maybe-emit-return)) |
66d3e9a3 | 714 | |
93f63467 | 715 | ((<lambda-case> src req opt rest kw inits gensyms alternate body) |
899d37a6 AW |
716 | ;; o/~ feature on top of feature o/~ |
717 | ;; req := (name ...) | |
b0c8c187 | 718 | ;; opt := (name ...) | #f |
899d37a6 | 719 | ;; rest := name | #f |
b0c8c187 | 720 | ;; kw: (allow-other-keys? (keyword name var) ...) | #f |
93f63467 AW |
721 | ;; gensyms: (sym ...) |
722 | ;; init: tree-il in context of gensyms | |
723 | ;; gensyms map to named arguments in the following order: | |
899d37a6 AW |
724 | ;; required, optional (positional), rest, keyword. |
725 | (let* ((nreq (length req)) | |
726 | (nopt (if opt (length opt) 0)) | |
727 | (rest-idx (and rest (+ nreq nopt))) | |
b0c8c187 | 728 | (opt-names (or opt '())) |
899d37a6 AW |
729 | (allow-other-keys? (if kw (car kw) #f)) |
730 | (kw-indices (map (lambda (x) | |
731 | (pmatch x | |
b0c8c187 | 732 | ((,key ,name ,var) |
93f63467 | 733 | (cons key (list-index gensyms var))) |
899d37a6 AW |
734 | (else (error "bad kwarg" x)))) |
735 | (if kw (cdr kw) '()))) | |
b0c8c187 AW |
736 | (nargs (apply max (+ nreq nopt (if rest 1 0)) |
737 | (map 1+ (map cdr kw-indices)))) | |
899d37a6 | 738 | (nlocs (cdr (hashq-ref allocation x))) |
3a88cb3b | 739 | (alternate-label (and alternate (make-label)))) |
899d37a6 | 740 | (or (= nargs |
93f63467 | 741 | (length gensyms) |
b0c8c187 | 742 | (+ nreq (length inits) (if rest 1 0))) |
3b24aee6 | 743 | (error "lambda-case gensyms don't correspond to args" |
93f63467 | 744 | req opt rest kw inits gensyms nreq nopt kw-indices nargs)) |
7e01997e AW |
745 | ;; the prelude, to check args & reset the stack pointer, |
746 | ;; allowing room for locals | |
747 | (emit-code | |
748 | src | |
749 | (cond | |
7e01997e | 750 | (kw |
899d37a6 | 751 | (make-glil-kw-prelude nreq nopt rest-idx kw-indices |
3a88cb3b | 752 | allow-other-keys? nlocs alternate-label)) |
7e01997e | 753 | ((or rest opt) |
3a88cb3b | 754 | (make-glil-opt-prelude nreq nopt rest-idx nlocs alternate-label)) |
7e01997e | 755 | (#t |
3a88cb3b | 756 | (make-glil-std-prelude nreq nlocs alternate-label)))) |
7e01997e AW |
757 | ;; box args if necessary |
758 | (for-each | |
759 | (lambda (v) | |
760 | (pmatch (hashq-ref (hashq-ref allocation v) self) | |
761 | ((#t #t . ,n) | |
762 | (emit-code #f (make-glil-lexical #t #f 'ref n)) | |
763 | (emit-code #f (make-glil-lexical #t #t 'box n))))) | |
93f63467 | 764 | gensyms) |
7e01997e | 765 | ;; write bindings info |
93f63467 | 766 | (if (not (null? gensyms)) |
7e01997e AW |
767 | (emit-bindings |
768 | #f | |
769 | (let lp ((kw (if kw (cdr kw) '())) | |
b0c8c187 | 770 | (names (append (reverse opt-names) (reverse req))) |
93f63467 | 771 | (gensyms (list-tail gensyms (+ nreq nopt |
7e01997e AW |
772 | (if rest 1 0))))) |
773 | (pmatch kw | |
899d37a6 | 774 | (() |
93f63467 | 775 | ;; fixme: check that gensyms is empty |
899d37a6 | 776 | (reverse (if rest (cons rest names) names))) |
7e01997e | 777 | (((,key ,name ,var) . ,kw) |
93f63467 AW |
778 | (if (memq var gensyms) |
779 | (lp kw (cons name names) (delq var gensyms)) | |
780 | (lp kw names gensyms))) | |
7e01997e | 781 | (,kw (error "bad keywords, yo" kw)))) |
93f63467 | 782 | gensyms allocation self emit-code)) |
b0c8c187 | 783 | ;; init optional/kw args |
93f63467 | 784 | (let lp ((inits inits) (n nreq) (gensyms (list-tail gensyms nreq))) |
b0c8c187 AW |
785 | (cond |
786 | ((null? inits)) ; done | |
787 | ((and rest-idx (= n rest-idx)) | |
93f63467 | 788 | (lp inits (1+ n) (cdr gensyms))) |
b0c8c187 | 789 | (#t |
93f63467 | 790 | (pmatch (hashq-ref (hashq-ref allocation (car gensyms)) self) |
b0c8c187 AW |
791 | ((#t ,boxed? . ,n*) (guard (= n* n)) |
792 | (let ((L (make-label))) | |
793 | (emit-code #f (make-glil-lexical #t boxed? 'bound? n)) | |
794 | (emit-code #f (make-glil-branch 'br-if L)) | |
795 | (comp-push (car inits)) | |
796 | (emit-code #f (make-glil-lexical #t boxed? 'set n)) | |
797 | (emit-label L) | |
93f63467 | 798 | (lp (cdr inits) (1+ n) (cdr gensyms)))) |
3b24aee6 | 799 | (#t (error "bad arg allocation" (car gensyms) inits)))))) |
7e01997e AW |
800 | ;; post-prelude case label for label calls |
801 | (emit-label (car (hashq-ref allocation x))) | |
8a4ca0ea | 802 | (comp-tail body) |
93f63467 | 803 | (if (not (null? gensyms)) |
8a4ca0ea | 804 | (emit-code #f (make-glil-unbind))) |
3a88cb3b | 805 | (if alternate-label |
8a4ca0ea | 806 | (begin |
3a88cb3b | 807 | (emit-label alternate-label) |
0083cb5e AW |
808 | (flatten-lambda-case alternate allocation self self-label |
809 | fix-labels emit-code))))) | |
8a4ca0ea | 810 | |
93f63467 | 811 | ((<let> src names gensyms vals body) |
073bb617 | 812 | (for-each comp-push vals) |
93f63467 | 813 | (emit-bindings src names gensyms allocation self emit-code) |
cf10678f | 814 | (for-each (lambda (v) |
9b29d607 | 815 | (pmatch (hashq-ref (hashq-ref allocation v) self) |
66d3e9a3 AW |
816 | ((#t #f . ,n) |
817 | (emit-code src (make-glil-lexical #t #f 'set n))) | |
818 | ((#t #t . ,n) | |
819 | (emit-code src (make-glil-lexical #t #t 'box n))) | |
3b24aee6 | 820 | (,loc (error "bad let var allocation" x loc)))) |
93f63467 | 821 | (reverse gensyms)) |
f4aa8d53 | 822 | (comp-tail body) |
fb135e12 | 823 | (clear-stack-slots context gensyms) |
cf10678f AW |
824 | (emit-code #f (make-glil-unbind))) |
825 | ||
60d4b224 AW |
826 | ((<letrec> src in-order? names gensyms vals body) |
827 | ;; First prepare heap storage slots. | |
66d3e9a3 | 828 | (for-each (lambda (v) |
9b29d607 | 829 | (pmatch (hashq-ref (hashq-ref allocation v) self) |
66d3e9a3 AW |
830 | ((#t #t . ,n) |
831 | (emit-code src (make-glil-lexical #t #t 'empty-box n))) | |
3b24aee6 | 832 | (,loc (error "bad letrec var allocation" x loc)))) |
93f63467 | 833 | gensyms) |
60d4b224 | 834 | ;; Even though the slots are empty, the bindings are valid. |
93f63467 | 835 | (emit-bindings src names gensyms allocation self emit-code) |
60d4b224 AW |
836 | (cond |
837 | (in-order? | |
838 | ;; For letrec*, bind values in order. | |
839 | (for-each (lambda (name v val) | |
840 | (pmatch (hashq-ref (hashq-ref allocation v) self) | |
841 | ((#t #t . ,n) | |
842 | (comp-push val) | |
843 | (emit-code src (make-glil-lexical #t #t 'set n))) | |
3b24aee6 | 844 | (,loc (error "bad letrec var allocation" x loc)))) |
60d4b224 AW |
845 | names gensyms vals)) |
846 | (else | |
847 | ;; But for letrec, eval all values, then bind. | |
848 | (for-each comp-push vals) | |
849 | (for-each (lambda (v) | |
850 | (pmatch (hashq-ref (hashq-ref allocation v) self) | |
851 | ((#t #t . ,n) | |
852 | (emit-code src (make-glil-lexical #t #t 'set n))) | |
3b24aee6 | 853 | (,loc (error "bad letrec var allocation" x loc)))) |
60d4b224 | 854 | (reverse gensyms)))) |
f4aa8d53 | 855 | (comp-tail body) |
fb135e12 | 856 | (clear-stack-slots context gensyms) |
f4aa8d53 AW |
857 | (emit-code #f (make-glil-unbind))) |
858 | ||
93f63467 | 859 | ((<fix> src names gensyms vals body) |
230cfcfb AW |
860 | ;; The ideal here is to just render the lambda bodies inline, and |
861 | ;; wire the code together with gotos. We can do that if | |
862 | ;; analyze-lexicals has determined that a given var has "label" | |
863 | ;; allocation -- which is the case if it is in `fix-labels'. | |
864 | ;; | |
865 | ;; But even for closures that we can't inline, we can do some | |
866 | ;; tricks to avoid heap-allocation for the binding itself. Since | |
867 | ;; we know the vals are lambdas, we can set them to their local | |
868 | ;; var slots first, then capture their bindings, mutating them in | |
869 | ;; place. | |
7f7b85cb | 870 | (let ((new-RA (if (or (eq? context 'tail) RA) #f (make-label)))) |
230cfcfb AW |
871 | (for-each |
872 | (lambda (x v) | |
873 | (cond | |
874 | ((hashq-ref allocation x) | |
875 | ;; allocating a closure | |
876 | (emit-code #f (flatten-lambda x v allocation)) | |
6f16379e AW |
877 | (let ((free-locs (cdr (hashq-ref allocation x)))) |
878 | (if (not (null? free-locs)) | |
879 | ;; Need to make-closure first, so we have a fresh closure on | |
880 | ;; the heap, but with a temporary free values. | |
881 | (begin | |
882 | (for-each (lambda (loc) | |
883 | (emit-code #f (make-glil-const #f))) | |
884 | free-locs) | |
885 | (emit-code #f (make-glil-call 'make-closure | |
886 | (length free-locs)))))) | |
230cfcfb AW |
887 | (pmatch (hashq-ref (hashq-ref allocation v) self) |
888 | ((#t #f . ,n) | |
889 | (emit-code src (make-glil-lexical #t #f 'set n))) | |
3b24aee6 | 890 | (,loc (error "bad fix var allocation" x loc)))) |
230cfcfb AW |
891 | (else |
892 | ;; labels allocation: emit label & body, but jump over it | |
893 | (let ((POST (make-label))) | |
894 | (emit-branch #f 'br POST) | |
8a4ca0ea AW |
895 | (let lp ((lcase (lambda-body x))) |
896 | (if lcase | |
897 | (record-case lcase | |
93f63467 | 898 | ((<lambda-case> src req gensyms body alternate) |
8a4ca0ea AW |
899 | (emit-label (car (hashq-ref allocation lcase))) |
900 | ;; FIXME: opt & kw args in the bindings | |
93f63467 | 901 | (emit-bindings #f req gensyms allocation self emit-code) |
8a4ca0ea AW |
902 | (if src |
903 | (emit-code #f (make-glil-source src))) | |
904 | (comp-fix body (or RA new-RA)) | |
905 | (emit-code #f (make-glil-unbind)) | |
3a88cb3b | 906 | (lp alternate))) |
8a4ca0ea | 907 | (emit-label POST))))))) |
230cfcfb | 908 | vals |
93f63467 | 909 | gensyms) |
230cfcfb | 910 | ;; Emit bindings metadata for closures |
93f63467 AW |
911 | (let ((binds (let lp ((out '()) (gensyms gensyms) (names names)) |
912 | (cond ((null? gensyms) (reverse! out)) | |
913 | ((assq (car gensyms) fix-labels) | |
914 | (lp out (cdr gensyms) (cdr names))) | |
230cfcfb | 915 | (else |
93f63467 AW |
916 | (lp (acons (car gensyms) (car names) out) |
917 | (cdr gensyms) (cdr names))))))) | |
230cfcfb AW |
918 | (emit-bindings src (map cdr binds) (map car binds) |
919 | allocation self emit-code)) | |
920 | ;; Now go back and fix up the bindings for closures. | |
921 | (for-each | |
922 | (lambda (x v) | |
923 | (let ((free-locs (if (hashq-ref allocation x) | |
8a4ca0ea | 924 | (cdr (hashq-ref allocation x)) |
230cfcfb AW |
925 | ;; can hit this latter case for labels allocation |
926 | '()))) | |
927 | (if (not (null? free-locs)) | |
928 | (begin | |
929 | (for-each | |
930 | (lambda (loc) | |
931 | (pmatch loc | |
d773ba23 | 932 | ((,local? ,boxed? . ,n) |
230cfcfb | 933 | (emit-code #f (make-glil-lexical local? #f 'ref n))) |
3b24aee6 | 934 | (else (error "bad free var allocation" x loc)))) |
230cfcfb | 935 | free-locs) |
230cfcfb AW |
936 | (pmatch (hashq-ref (hashq-ref allocation v) self) |
937 | ((#t #f . ,n) | |
938 | (emit-code #f (make-glil-lexical #t #f 'fix n))) | |
3b24aee6 | 939 | (,loc (error "bad fix var allocation" x loc))))))) |
230cfcfb | 940 | vals |
93f63467 | 941 | gensyms) |
230cfcfb | 942 | (comp-tail body) |
7f7b85cb AW |
943 | (if new-RA |
944 | (emit-label new-RA)) | |
fb135e12 | 945 | (clear-stack-slots context gensyms) |
230cfcfb | 946 | (emit-code #f (make-glil-unbind)))) |
c21c89b1 | 947 | |
8a4ca0ea AW |
948 | ((<let-values> src exp body) |
949 | (record-case body | |
93f63467 | 950 | ((<lambda-case> req opt kw rest gensyms body alternate) |
3a88cb3b | 951 | (if (or opt kw alternate) |
8a4ca0ea AW |
952 | (error "unexpected lambda-case in let-values" x)) |
953 | (let ((MV (make-label))) | |
954 | (comp-vals exp MV) | |
955 | (emit-code #f (make-glil-const 1)) | |
956 | (emit-label MV) | |
957 | (emit-code src (make-glil-mv-bind | |
958 | (vars->bind-list | |
959 | (append req (if rest (list rest) '())) | |
93f63467 | 960 | gensyms allocation self) |
8a4ca0ea AW |
961 | (and rest #t))) |
962 | (for-each (lambda (v) | |
963 | (pmatch (hashq-ref (hashq-ref allocation v) self) | |
964 | ((#t #f . ,n) | |
965 | (emit-code src (make-glil-lexical #t #f 'set n))) | |
966 | ((#t #t . ,n) | |
967 | (emit-code src (make-glil-lexical #t #t 'box n))) | |
3b24aee6 | 968 | (,loc (error "bad let-values var allocation" x loc)))) |
93f63467 | 969 | (reverse gensyms)) |
8a4ca0ea | 970 | (comp-tail body) |
fb135e12 | 971 | (clear-stack-slots context gensyms) |
c6601f10 AW |
972 | (emit-code #f (make-glil-unbind)))))) |
973 | ||
974 | ;; much trickier than i thought this would be, at first, due to the need | |
975 | ;; to have body's return value(s) on the stack while the unwinder runs, | |
976 | ;; then proceed with returning or dropping or what-have-you, interacting | |
977 | ;; with RA and MVRA. What have you, I say. | |
8da6ab34 | 978 | ((<dynwind> src body winder unwinder) |
c6601f10 AW |
979 | (comp-push winder) |
980 | (comp-push unwinder) | |
981 | (comp-drop (make-application src winder '())) | |
982 | (emit-code #f (make-glil-call 'wind 2)) | |
983 | ||
984 | (case context | |
985 | ((tail) | |
986 | (let ((MV (make-label))) | |
987 | (comp-vals body MV) | |
988 | ;; one value: unwind... | |
989 | (emit-code #f (make-glil-call 'unwind 0)) | |
990 | (comp-drop (make-application src unwinder '())) | |
991 | ;; ...and return the val | |
992 | (emit-code #f (make-glil-call 'return 1)) | |
993 | ||
994 | (emit-label MV) | |
995 | ;; multiple values: unwind... | |
996 | (emit-code #f (make-glil-call 'unwind 0)) | |
997 | (comp-drop (make-application src unwinder '())) | |
998 | ;; and return the values. | |
999 | (emit-code #f (make-glil-call 'return/nvalues 1)))) | |
1000 | ||
1001 | ((push) | |
1002 | ;; we only want one value. so ask for one value | |
1003 | (comp-push body) | |
1004 | ;; and unwind, leaving the val on the stack | |
1005 | (emit-code #f (make-glil-call 'unwind 0)) | |
1006 | (comp-drop (make-application src unwinder '()))) | |
1007 | ||
1008 | ((vals) | |
1009 | (let ((MV (make-label))) | |
1010 | (comp-vals body MV) | |
1011 | ;; one value: push 1 and fall through to MV case | |
1012 | (emit-code #f (make-glil-const 1)) | |
1013 | ||
1014 | (emit-label MV) | |
1015 | ;; multiple values: unwind... | |
1016 | (emit-code #f (make-glil-call 'unwind 0)) | |
1017 | (comp-drop (make-application src unwinder '())) | |
1018 | ;; and goto the MVRA. | |
1019 | (emit-branch #f 'br MVRA))) | |
1020 | ||
1021 | ((drop) | |
1022 | ;; compile body, discarding values. then unwind... | |
1023 | (comp-drop body) | |
1024 | (emit-code #f (make-glil-call 'unwind 0)) | |
1025 | (comp-drop (make-application src unwinder '())) | |
1026 | ;; and fall through, or goto RA if there is one. | |
b50511b4 AW |
1027 | (if RA |
1028 | (emit-branch #f 'br RA))))) | |
1029 | ||
1030 | ((<dynlet> src fluids vals body) | |
1031 | (for-each comp-push fluids) | |
1032 | (for-each comp-push vals) | |
1033 | (emit-code #f (make-glil-call 'wind-fluids (length fluids))) | |
1034 | ||
1035 | (case context | |
1036 | ((tail) | |
1037 | (let ((MV (make-label))) | |
1038 | ;; NB: in tail case, it is possible to preserve asymptotic tail | |
1039 | ;; recursion, via merging unwind-fluids structures -- but we'd need | |
1040 | ;; to compile in the body twice (once in tail context, assuming the | |
1041 | ;; caller unwinds, and once with this trampoline thing, unwinding | |
1042 | ;; ourselves). | |
1043 | (comp-vals body MV) | |
1044 | ;; one value: unwind and return | |
1045 | (emit-code #f (make-glil-call 'unwind-fluids 0)) | |
1046 | (emit-code #f (make-glil-call 'return 1)) | |
1047 | ||
1048 | (emit-label MV) | |
1049 | ;; multiple values: unwind and return values | |
1050 | (emit-code #f (make-glil-call 'unwind-fluids 0)) | |
1051 | (emit-code #f (make-glil-call 'return/nvalues 1)))) | |
1052 | ||
1053 | ((push) | |
1054 | (comp-push body) | |
1055 | (emit-code #f (make-glil-call 'unwind-fluids 0))) | |
1056 | ||
1057 | ((vals) | |
1058 | (let ((MV (make-label))) | |
1059 | (comp-vals body MV) | |
1060 | ;; one value: push 1 and fall through to MV case | |
1061 | (emit-code #f (make-glil-const 1)) | |
1062 | ||
1063 | (emit-label MV) | |
1064 | ;; multiple values: unwind and goto MVRA | |
1065 | (emit-code #f (make-glil-call 'unwind-fluids 0)) | |
1066 | (emit-branch #f 'br MVRA))) | |
1067 | ||
1068 | ((drop) | |
1069 | ;; compile body, discarding values. then unwind... | |
1070 | (comp-drop body) | |
1071 | (emit-code #f (make-glil-call 'unwind-fluids 0)) | |
1072 | ;; and fall through, or goto RA if there is one. | |
c6601f10 AW |
1073 | (if RA |
1074 | (emit-branch #f 'br RA))))) | |
1075 | ||
706a705e AW |
1076 | ((<dynref> src fluid) |
1077 | (case context | |
1078 | ((drop) | |
1079 | (comp-drop fluid)) | |
1080 | ((push vals tail) | |
1081 | (comp-push fluid) | |
1082 | (emit-code #f (make-glil-call 'fluid-ref 1)))) | |
1083 | (maybe-emit-return)) | |
1084 | ||
1085 | ((<dynset> src fluid exp) | |
1086 | (comp-push fluid) | |
1087 | (comp-push exp) | |
1088 | (emit-code #f (make-glil-call 'fluid-set 2)) | |
1089 | (case context | |
1090 | ((push vals tail) | |
1091 | (emit-code #f (make-glil-void)))) | |
1092 | (maybe-emit-return)) | |
1093 | ||
c6601f10 AW |
1094 | ;; What's the deal here? The deal is that we are compiling the start of a |
1095 | ;; delimited continuation. We try to avoid heap allocation in the normal | |
1096 | ;; case; so the body is an expression, not a thunk, and we try to render | |
1097 | ;; the handler inline. Also we did some analysis, in analyze.scm, so that | |
1098 | ;; if the continuation isn't referenced, we don't reify it. This makes it | |
1099 | ;; possible to implement catch and throw with delimited continuations, | |
1100 | ;; without any overhead. | |
07a0c7d5 | 1101 | ((<prompt> src tag body handler) |
c6601f10 AW |
1102 | (let ((H (make-label)) |
1103 | (POST (make-label)) | |
c6601f10 AW |
1104 | (escape-only? (hashq-ref allocation x))) |
1105 | ;; First, set up the prompt. | |
1106 | (comp-push tag) | |
ea6b18e8 | 1107 | (emit-code src (make-glil-prompt H escape-only?)) |
c6601f10 AW |
1108 | |
1109 | ;; Then we compile the body, with its normal return path, unwinding | |
1110 | ;; before proceeding. | |
1111 | (case context | |
1112 | ((tail) | |
1113 | (let ((MV (make-label))) | |
1114 | (comp-vals body MV) | |
1115 | ;; one value: unwind and return | |
1116 | (emit-code #f (make-glil-call 'unwind 0)) | |
1117 | (emit-code #f (make-glil-call 'return 1)) | |
1118 | ;; multiple values: unwind and return | |
1119 | (emit-label MV) | |
1120 | (emit-code #f (make-glil-call 'unwind 0)) | |
1121 | (emit-code #f (make-glil-call 'return/nvalues 1)))) | |
1122 | ||
1123 | ((push) | |
1124 | ;; we only want one value. so ask for one value, unwind, and jump to | |
1125 | ;; post | |
1126 | (comp-push body) | |
1127 | (emit-code #f (make-glil-call 'unwind 0)) | |
9dadfa47 | 1128 | (emit-branch #f 'br (or RA POST))) |
c6601f10 AW |
1129 | |
1130 | ((vals) | |
1131 | (let ((MV (make-label))) | |
1132 | (comp-vals body MV) | |
1133 | ;; one value: push 1 and fall through to MV case | |
1134 | (emit-code #f (make-glil-const 1)) | |
1135 | ;; multiple values: unwind and goto MVRA | |
1136 | (emit-label MV) | |
1137 | (emit-code #f (make-glil-call 'unwind 0)) | |
1138 | (emit-branch #f 'br MVRA))) | |
1139 | ||
1140 | ((drop) | |
1141 | ;; compile body, discarding values, then unwind & fall through. | |
1142 | (comp-drop body) | |
1143 | (emit-code #f (make-glil-call 'unwind 0)) | |
1144 | (emit-branch #f 'br (or RA POST)))) | |
1145 | ||
c6601f10 | 1146 | (emit-label H) |
ea6b18e8 AW |
1147 | ;; Now the handler. The stack is now made up of the continuation, and |
1148 | ;; then the args to the continuation (pushed separately), and then the | |
1149 | ;; number of args, including the continuation. | |
1150 | (record-case handler | |
93f63467 | 1151 | ((<lambda-case> req opt kw rest gensyms body alternate) |
ea6b18e8 AW |
1152 | (if (or opt kw alternate) |
1153 | (error "unexpected lambda-case in prompt" x)) | |
1154 | (emit-code src (make-glil-mv-bind | |
1155 | (vars->bind-list | |
1156 | (append req (if rest (list rest) '())) | |
93f63467 | 1157 | gensyms allocation self) |
ea6b18e8 AW |
1158 | (and rest #t))) |
1159 | (for-each (lambda (v) | |
1160 | (pmatch (hashq-ref (hashq-ref allocation v) self) | |
1161 | ((#t #f . ,n) | |
1162 | (emit-code src (make-glil-lexical #t #f 'set n))) | |
1163 | ((#t #t . ,n) | |
1164 | (emit-code src (make-glil-lexical #t #t 'box n))) | |
3b24aee6 AW |
1165 | (,loc |
1166 | (error "bad prompt handler arg allocation" x loc)))) | |
93f63467 | 1167 | (reverse gensyms)) |
ea6b18e8 AW |
1168 | (comp-tail body) |
1169 | (emit-code #f (make-glil-unbind)))) | |
c6601f10 | 1170 | |
9dadfa47 AW |
1171 | (if (and (not RA) |
1172 | (or (eq? context 'push) (eq? context 'drop))) | |
c6601f10 AW |
1173 | (emit-label POST)))) |
1174 | ||
2d026f04 | 1175 | ((<abort> src tag args tail) |
c6601f10 | 1176 | (comp-push tag) |
6e84cb95 | 1177 | (for-each comp-push args) |
2d026f04 | 1178 | (comp-push tail) |
eaefabee AW |
1179 | (emit-code src (make-glil-call 'abort (length args))) |
1180 | ;; so, the abort can actually return. if it does, the values will be on | |
1181 | ;; the stack, then the MV marker, just as in an MV context. | |
1182 | (case context | |
1183 | ((tail) | |
1184 | ;; Return values. | |
1185 | (emit-code #f (make-glil-call 'return/nvalues 1))) | |
1186 | ((drop) | |
1187 | ;; Drop all values and goto RA, or otherwise fall through. | |
05c51bcf | 1188 | (emit-code #f (make-glil-mv-bind 0 #f)) |
eaefabee AW |
1189 | (if RA (emit-branch #f 'br RA))) |
1190 | ((push) | |
1191 | ;; Truncate to one value. | |
05c51bcf | 1192 | (emit-code #f (make-glil-mv-bind 1 #f))) |
eaefabee AW |
1193 | ((vals) |
1194 | ;; Go to MVRA. | |
1195 | (emit-branch #f 'br MVRA))))))) |