1 | /* Graphite polyhedral representation. |
2 | Copyright (C) 2009-2023 Free Software Foundation, Inc. |
3 | Contributed by Sebastian Pop <sebastian.pop@amd.com> and |
4 | Tobias Grosser <grosser@fim.uni-passau.de>. |
5 | |
6 | This file is part of GCC. |
7 | |
8 | GCC is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by |
10 | the Free Software Foundation; either version 3, or (at your option) |
11 | any later version. |
12 | |
13 | GCC is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | GNU General Public License for more details. |
17 | |
18 | You should have received a copy of the GNU General Public License |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ |
21 | |
22 | #define INCLUDE_ISL |
23 | |
24 | #include "config.h" |
25 | |
26 | #ifdef HAVE_isl |
27 | |
28 | #include "system.h" |
29 | #include "coretypes.h" |
30 | #include "backend.h" |
31 | #include "tree.h" |
32 | #include "gimple.h" |
33 | #include "cfghooks.h" |
34 | #include "diagnostic-core.h" |
35 | #include "fold-const.h" |
36 | #include "gimple-iterator.h" |
37 | #include "tree-ssa-loop.h" |
38 | #include "cfgloop.h" |
39 | #include "tree-data-ref.h" |
40 | #include "pretty-print.h" |
41 | #include "gimple-pretty-print.h" |
42 | #include "graphite.h" |
43 | #include "dumpfile.h" |
44 | |
45 | /* Print to STDERR the GMP value VAL. */ |
46 | |
47 | DEBUG_FUNCTION void |
48 | debug_gmp_value (mpz_t val) |
49 | { |
50 | gmp_fprintf (stderr, "%Zd" , val); |
51 | } |
52 | |
53 | /* Prints to FILE the iteration domain of PBB. */ |
54 | |
55 | void |
56 | print_iteration_domain (FILE *file, poly_bb_p pbb) |
57 | { |
58 | print_pbb_domain (file, pbb); |
59 | } |
60 | |
61 | /* Prints to FILE the iteration domains of every PBB of SCOP. */ |
62 | |
63 | void |
64 | print_iteration_domains (FILE *file, scop_p scop) |
65 | { |
66 | for (poly_bb_p pbb : scop->pbbs) |
67 | print_iteration_domain (file, pbb); |
68 | } |
69 | |
70 | /* Prints to STDERR the iteration domain of PBB. */ |
71 | |
72 | DEBUG_FUNCTION void |
73 | debug_iteration_domain (poly_bb_p pbb) |
74 | { |
75 | print_iteration_domain (stderr, pbb); |
76 | } |
77 | |
78 | /* Prints to STDERR the iteration domains of every PBB of SCOP. */ |
79 | |
80 | DEBUG_FUNCTION void |
81 | debug_iteration_domains (scop_p scop) |
82 | { |
83 | print_iteration_domains (stderr, scop); |
84 | } |
85 | |
86 | /* Create a new polyhedral data reference and add it to PBB. It is |
87 | defined by its ACCESSES, its TYPE, and the number of subscripts |
88 | NB_SUBSCRIPTS. */ |
89 | |
90 | void |
91 | new_poly_dr (poly_bb_p pbb, gimple *stmt, enum poly_dr_type type, |
92 | isl_map *acc, isl_set *subscript_sizes) |
93 | { |
94 | static int id = 0; |
95 | poly_dr_p pdr = XNEW (struct poly_dr); |
96 | |
97 | pdr->stmt = stmt; |
98 | PDR_ID (pdr) = id++; |
99 | PDR_NB_REFS (pdr) = 1; |
100 | PDR_PBB (pdr) = pbb; |
101 | pdr->accesses = acc; |
102 | pdr->subscript_sizes = subscript_sizes; |
103 | PDR_TYPE (pdr) = type; |
104 | PBB_DRS (pbb).safe_push (pdr); |
105 | |
106 | if (dump_file) |
107 | { |
108 | fprintf (dump_file, "Converting dr: " ); |
109 | print_pdr (dump_file, pdr); |
110 | fprintf (dump_file, "To polyhedral representation:\n" ); |
111 | fprintf (dump_file, " - access functions: " ); |
112 | print_isl_map (dump_file, acc); |
113 | fprintf (dump_file, " - subscripts: " ); |
114 | print_isl_set (dump_file, subscript_sizes); |
115 | } |
116 | } |
117 | |
118 | /* Free polyhedral data reference PDR. */ |
119 | |
120 | static void |
121 | free_poly_dr (poly_dr_p pdr) |
122 | { |
123 | isl_map_free (pdr->accesses); |
124 | isl_set_free (pdr->subscript_sizes); |
125 | XDELETE (pdr); |
126 | } |
127 | |
128 | /* Create a new polyhedral black box. */ |
129 | |
130 | poly_bb_p |
131 | new_poly_bb (scop_p scop, gimple_poly_bb_p black_box) |
132 | { |
133 | poly_bb_p pbb = XNEW (struct poly_bb); |
134 | |
135 | pbb->domain = NULL; |
136 | pbb->iterators = NULL; |
137 | PBB_SCOP (pbb) = scop; |
138 | pbb_set_black_box (pbb, black_box); |
139 | PBB_DRS (pbb).create (3); |
140 | GBB_PBB ((gimple_poly_bb_p) black_box) = pbb; |
141 | |
142 | return pbb; |
143 | } |
144 | |
145 | /* Free polyhedral black box. */ |
146 | |
147 | static void |
148 | free_poly_bb (poly_bb_p pbb) |
149 | { |
150 | isl_set_free (pbb->domain); |
151 | pbb->domain = NULL; |
152 | isl_set_free (pbb->iterators); |
153 | pbb->iterators = NULL; |
154 | |
155 | if (PBB_DRS (pbb).exists ()) |
156 | for (poly_dr_p pdr : PBB_DRS (pbb)) |
157 | free_poly_dr (pdr); |
158 | |
159 | PBB_DRS (pbb).release (); |
160 | XDELETE (pbb); |
161 | } |
162 | |
163 | /* Prints to FILE the polyhedral data reference PDR. */ |
164 | |
165 | void |
166 | print_pdr (FILE *file, poly_dr_p pdr) |
167 | { |
168 | fprintf (file, "pdr_%d (" , PDR_ID (pdr)); |
169 | |
170 | switch (PDR_TYPE (pdr)) |
171 | { |
172 | case PDR_READ: |
173 | fprintf (file, "read \n" ); |
174 | break; |
175 | |
176 | case PDR_WRITE: |
177 | fprintf (file, "write \n" ); |
178 | break; |
179 | |
180 | case PDR_MAY_WRITE: |
181 | fprintf (file, "may_write \n" ); |
182 | break; |
183 | |
184 | default: |
185 | gcc_unreachable (); |
186 | } |
187 | |
188 | fprintf (file, "in gimple stmt: " ); |
189 | print_gimple_stmt (file, pdr->stmt, 0); |
190 | fprintf (file, "data accesses: " ); |
191 | print_isl_map (file, pdr->accesses); |
192 | fprintf (file, "subscript sizes: " ); |
193 | print_isl_set (file, pdr->subscript_sizes); |
194 | fprintf (file, ")\n" ); |
195 | } |
196 | |
197 | /* Prints to STDERR the polyhedral data reference PDR. */ |
198 | |
199 | DEBUG_FUNCTION void |
200 | debug_pdr (poly_dr_p pdr) |
201 | { |
202 | print_pdr (stderr, pdr); |
203 | } |
204 | |
205 | /* Store the GRAPHITE representation of BB. */ |
206 | |
207 | gimple_poly_bb_p |
208 | new_gimple_poly_bb (basic_block bb, vec<data_reference_p> drs, |
209 | vec<scalar_use> reads, vec<tree> writes) |
210 | { |
211 | gimple_poly_bb_p gbb = XNEW (struct gimple_poly_bb); |
212 | GBB_BB (gbb) = bb; |
213 | GBB_DATA_REFS (gbb) = drs; |
214 | gbb->read_scalar_refs = reads; |
215 | gbb->write_scalar_refs = writes; |
216 | GBB_CONDITIONS (gbb).create (0); |
217 | GBB_CONDITION_CASES (gbb).create (0); |
218 | |
219 | return gbb; |
220 | } |
221 | |
222 | /* Frees GBB. */ |
223 | |
224 | static void |
225 | free_gimple_poly_bb (gimple_poly_bb_p gbb) |
226 | { |
227 | free_data_refs (GBB_DATA_REFS (gbb)); |
228 | GBB_CONDITIONS (gbb).release (); |
229 | GBB_CONDITION_CASES (gbb).release (); |
230 | gbb->read_scalar_refs.release (); |
231 | gbb->write_scalar_refs.release (); |
232 | XDELETE (gbb); |
233 | } |
234 | |
235 | /* Deletes all gimple bbs in SCOP. */ |
236 | |
237 | static void |
238 | remove_gbbs_in_scop (scop_p scop) |
239 | { |
240 | for (poly_bb_p pbb : scop->pbbs) |
241 | free_gimple_poly_bb (PBB_BLACK_BOX (pbb)); |
242 | } |
243 | |
244 | /* Creates a new SCOP containing the region (ENTRY, EXIT). */ |
245 | |
246 | scop_p |
247 | new_scop (edge entry, edge exit) |
248 | { |
249 | sese_info_p region = new_sese_info (entry, exit); |
250 | scop_p s = XNEW (struct scop); |
251 | |
252 | s->original_schedule = NULL; |
253 | s->transformed_schedule = NULL; |
254 | s->param_context = NULL; |
255 | scop_set_region (s, region); |
256 | s->pbbs.create (3); |
257 | s->drs.create (3); |
258 | s->dependence = NULL; |
259 | return s; |
260 | } |
261 | |
262 | /* Deletes SCOP. */ |
263 | |
264 | void |
265 | free_scop (scop_p scop) |
266 | { |
267 | remove_gbbs_in_scop (scop); |
268 | free_sese_info (scop->scop_info); |
269 | |
270 | for (poly_bb_p pbb : scop->pbbs) |
271 | free_poly_bb (pbb); |
272 | |
273 | scop->pbbs.release (); |
274 | scop->drs.release (); |
275 | |
276 | isl_set_free (scop->param_context); |
277 | scop->param_context = NULL; |
278 | isl_union_map_free (scop->dependence); |
279 | scop->dependence = NULL; |
280 | isl_schedule_free (scop->original_schedule); |
281 | scop->original_schedule = NULL; |
282 | isl_schedule_free (scop->transformed_schedule); |
283 | scop->transformed_schedule = NULL; |
284 | XDELETE (scop); |
285 | } |
286 | |
287 | /* Print to FILE the domain of PBB. */ |
288 | |
289 | void |
290 | print_pbb_domain (FILE *file, poly_bb_p pbb) |
291 | { |
292 | print_isl_set (file, pbb->domain); |
293 | } |
294 | |
295 | /* Dump the cases of a graphite basic block GBB on FILE. */ |
296 | |
297 | static void |
298 | dump_gbb_cases (FILE *file, gimple_poly_bb_p gbb) |
299 | { |
300 | vec<gimple *> cases; |
301 | |
302 | if (!gbb) |
303 | return; |
304 | |
305 | cases = GBB_CONDITION_CASES (gbb); |
306 | if (cases.is_empty ()) |
307 | return; |
308 | |
309 | fprintf (file, "cases bb_%d (\n" , GBB_BB (gbb)->index); |
310 | |
311 | for (gimple *stmt : cases) |
312 | print_gimple_stmt (file, stmt, 0); |
313 | |
314 | fprintf (file, ")\n" ); |
315 | } |
316 | |
317 | /* Dump conditions of a graphite basic block GBB on FILE. */ |
318 | |
319 | static void |
320 | dump_gbb_conditions (FILE *file, gimple_poly_bb_p gbb) |
321 | { |
322 | vec<gimple *> conditions; |
323 | |
324 | if (!gbb) |
325 | return; |
326 | |
327 | conditions = GBB_CONDITIONS (gbb); |
328 | if (conditions.is_empty ()) |
329 | return; |
330 | |
331 | fprintf (file, "conditions bb_%d (\n" , GBB_BB (gbb)->index); |
332 | |
333 | for (gimple *stmt : conditions) |
334 | print_gimple_stmt (file, stmt, 0); |
335 | |
336 | fprintf (file, ")\n" ); |
337 | } |
338 | |
339 | /* Print to FILE all the data references of PBB. */ |
340 | |
341 | void |
342 | print_pdrs (FILE *file, poly_bb_p pbb) |
343 | { |
344 | if (PBB_DRS (pbb).is_empty ()) |
345 | return; |
346 | |
347 | fprintf (file, "Data references (\n" ); |
348 | fprintf (file, "Read data references (\n" ); |
349 | |
350 | for (poly_dr_p pdr : PBB_DRS (pbb)) |
351 | if (PDR_TYPE (pdr) == PDR_READ) |
352 | print_pdr (file, pdr); |
353 | |
354 | fprintf (file, ")\n" ); |
355 | fprintf (file, "Write data references (\n" ); |
356 | for (poly_dr_p pdr : PBB_DRS (pbb)) |
357 | if (PDR_TYPE (pdr) != PDR_READ) |
358 | print_pdr (file, pdr); |
359 | fprintf (file, ")\n" ); |
360 | fprintf (file, ")\n" ); |
361 | } |
362 | |
363 | /* Print to STDERR all the data references of PBB. */ |
364 | |
365 | DEBUG_FUNCTION void |
366 | debug_pdrs (poly_bb_p pbb) |
367 | { |
368 | print_pdrs (stderr, pbb); |
369 | } |
370 | |
371 | /* Print to FILE the body of PBB. */ |
372 | |
373 | static void |
374 | print_pbb_body (FILE *file, poly_bb_p pbb) |
375 | { |
376 | fprintf (file, "Body (\n" ); |
377 | dump_bb (file, pbb_bb (pbb), 0, TDF_NONE); |
378 | fprintf (file, ")\n" ); |
379 | } |
380 | |
381 | /* Print to FILE the domain and scattering function of PBB. */ |
382 | |
383 | void |
384 | print_pbb (FILE *file, poly_bb_p pbb) |
385 | { |
386 | fprintf (file, "pbb_%d (\n" , pbb_index (pbb)); |
387 | dump_gbb_conditions (file, PBB_BLACK_BOX (pbb)); |
388 | dump_gbb_cases (file, PBB_BLACK_BOX (pbb)); |
389 | |
390 | print_pbb_domain (file, pbb); |
391 | print_pdrs (file, pbb); |
392 | print_pbb_body (file, pbb); |
393 | |
394 | fprintf (file, ")\n" ); |
395 | } |
396 | |
397 | /* Print to FILE the parameters of SCOP. */ |
398 | |
399 | void |
400 | print_scop_params (FILE *file, scop_p scop) |
401 | { |
402 | if (scop->scop_info->params.is_empty ()) |
403 | return; |
404 | |
405 | int i; |
406 | tree t; |
407 | fprintf (file, "parameters (" ); |
408 | FOR_EACH_VEC_ELT (scop->scop_info->params, i, t) |
409 | { |
410 | print_generic_expr (file, t); |
411 | fprintf (file, ", " ); |
412 | } |
413 | fprintf (file, ")\n" ); |
414 | } |
415 | |
416 | /* Print to FILE the context of SCoP. */ |
417 | |
418 | void |
419 | print_scop_context (FILE *file, scop_p scop) |
420 | { |
421 | if (!scop->param_context) |
422 | return; |
423 | |
424 | fprintf (file, "Context (\n" ); |
425 | print_isl_set (file, scop->param_context); |
426 | fprintf (file, ")\n" ); |
427 | } |
428 | |
429 | /* Print to FILE the SCOP. */ |
430 | |
431 | void |
432 | print_scop (FILE *file, scop_p scop) |
433 | { |
434 | fprintf (file, "SCoP (\n" ); |
435 | print_scop_context (file, scop); |
436 | print_scop_params (file, scop); |
437 | |
438 | fprintf (file, "Number of statements: " ); |
439 | fprintf (file, "%d\n" , scop->pbbs.length ()); |
440 | |
441 | for (poly_bb_p pbb : scop->pbbs) |
442 | print_pbb (file, pbb); |
443 | |
444 | fprintf (file, ")\n" ); |
445 | } |
446 | |
447 | /* Print to STDERR the domain of PBB. */ |
448 | |
449 | DEBUG_FUNCTION void |
450 | debug_pbb_domain (poly_bb_p pbb) |
451 | { |
452 | print_pbb_domain (stderr, pbb); |
453 | } |
454 | |
455 | /* Print to FILE the domain and scattering function of PBB. */ |
456 | |
457 | DEBUG_FUNCTION void |
458 | debug_pbb (poly_bb_p pbb) |
459 | { |
460 | print_pbb (stderr, pbb); |
461 | } |
462 | |
463 | /* Print to STDERR the context of SCOP. */ |
464 | |
465 | DEBUG_FUNCTION void |
466 | debug_scop_context (scop_p scop) |
467 | { |
468 | print_scop_context (stderr, scop); |
469 | } |
470 | |
471 | /* Print to STDERR the SCOP. */ |
472 | |
473 | DEBUG_FUNCTION void |
474 | debug_scop (scop_p scop) |
475 | { |
476 | print_scop (stderr, scop); |
477 | } |
478 | |
479 | /* Print to STDERR the parameters of SCOP. */ |
480 | |
481 | DEBUG_FUNCTION void |
482 | debug_scop_params (scop_p scop) |
483 | { |
484 | print_scop_params (stderr, scop); |
485 | } |
486 | |
487 | extern isl_ctx *the_isl_ctx; |
488 | void |
489 | print_isl_set (FILE *f, __isl_keep isl_set *set) |
490 | { |
491 | isl_printer *p = isl_printer_to_file (the_isl_ctx, f); |
492 | p = isl_printer_set_yaml_style (p, ISL_YAML_STYLE_BLOCK); |
493 | p = isl_printer_print_set (p, set); |
494 | p = isl_printer_print_str (p, "\n" ); |
495 | isl_printer_free (p); |
496 | } |
497 | |
498 | DEBUG_FUNCTION void |
499 | debug_isl_set (__isl_keep isl_set *set) |
500 | { |
501 | print_isl_set (stderr, set); |
502 | } |
503 | |
504 | void |
505 | print_isl_map (FILE *f, __isl_keep isl_map *map) |
506 | { |
507 | isl_printer *p = isl_printer_to_file (the_isl_ctx, f); |
508 | p = isl_printer_set_yaml_style (p, ISL_YAML_STYLE_BLOCK); |
509 | p = isl_printer_print_map (p, map); |
510 | p = isl_printer_print_str (p, "\n" ); |
511 | isl_printer_free (p); |
512 | } |
513 | |
514 | DEBUG_FUNCTION void |
515 | debug_isl_map (__isl_keep isl_map *map) |
516 | { |
517 | print_isl_map (stderr, map); |
518 | } |
519 | |
520 | void |
521 | print_isl_union_map (FILE *f, __isl_keep isl_union_map *map) |
522 | { |
523 | isl_printer *p = isl_printer_to_file (the_isl_ctx, f); |
524 | p = isl_printer_set_yaml_style (p, ISL_YAML_STYLE_BLOCK); |
525 | p = isl_printer_print_union_map (p, map); |
526 | p = isl_printer_print_str (p, "\n" ); |
527 | isl_printer_free (p); |
528 | } |
529 | |
530 | DEBUG_FUNCTION void |
531 | debug_isl_union_map (__isl_keep isl_union_map *map) |
532 | { |
533 | print_isl_union_map (stderr, map); |
534 | } |
535 | |
536 | void |
537 | print_isl_aff (FILE *f, __isl_keep isl_aff *aff) |
538 | { |
539 | isl_printer *p = isl_printer_to_file (the_isl_ctx, f); |
540 | p = isl_printer_print_aff (p, aff); |
541 | p = isl_printer_print_str (p, "\n" ); |
542 | isl_printer_free (p); |
543 | } |
544 | |
545 | DEBUG_FUNCTION void |
546 | debug_isl_aff (__isl_keep isl_aff *aff) |
547 | { |
548 | print_isl_aff (stderr, aff); |
549 | } |
550 | |
551 | void |
552 | print_isl_constraint (FILE *f, __isl_keep isl_constraint *c) |
553 | { |
554 | isl_printer *p = isl_printer_to_file (the_isl_ctx, f); |
555 | p = isl_printer_print_constraint (p, c); |
556 | p = isl_printer_print_str (p, "\n" ); |
557 | isl_printer_free (p); |
558 | } |
559 | |
560 | DEBUG_FUNCTION void |
561 | debug_isl_constraint (__isl_keep isl_constraint *c) |
562 | { |
563 | print_isl_constraint (stderr, c); |
564 | } |
565 | |
566 | void |
567 | print_isl_schedule (FILE *f, __isl_keep isl_schedule *s) |
568 | { |
569 | isl_printer *p = isl_printer_to_file (the_isl_ctx, f); |
570 | p = isl_printer_set_yaml_style (p, ISL_YAML_STYLE_BLOCK); |
571 | p = isl_printer_print_schedule (p, s); |
572 | p = isl_printer_print_str (p, "\n" ); |
573 | isl_printer_free (p); |
574 | } |
575 | |
576 | DEBUG_FUNCTION void |
577 | debug_isl_schedule (__isl_keep isl_schedule *s) |
578 | { |
579 | print_isl_schedule (stderr, s); |
580 | } |
581 | |
582 | void |
583 | print_isl_ast (FILE *file, __isl_keep isl_ast_node *n) |
584 | { |
585 | isl_printer *prn = isl_printer_to_file (the_isl_ctx, file); |
586 | prn = isl_printer_set_output_format (prn, ISL_FORMAT_C); |
587 | prn = isl_printer_print_ast_node (prn, n); |
588 | prn = isl_printer_print_str (prn, "\n" ); |
589 | isl_printer_free (prn); |
590 | } |
591 | |
592 | DEBUG_FUNCTION void |
593 | debug_isl_ast (isl_ast_node *n) |
594 | { |
595 | print_isl_ast (stderr, n); |
596 | } |
597 | |
598 | DEBUG_FUNCTION void |
599 | debug_scop_pbb (scop_p scop, int i) |
600 | { |
601 | debug_pbb (scop->pbbs[i]); |
602 | } |
603 | |
604 | #endif /* HAVE_isl */ |
605 | |
606 | |