2 * Copyright 2011 INRIA Saclay
3 * Copyright 2013 Ecole Normale Superieure
5 * Use of this software is governed by the MIT license
7 * Written by Sven Verdoolaege, INRIA Saclay - Ile-de-France,
8 * Parc Club Orsay Universite, ZAC des vignes, 4 rue Jacques Monod,
10 * and Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France
19 #include <isl/options.h>
20 #include <isl/schedule.h>
21 #include <isl/ast_build.h>
22 #include <isl/schedule.h>
25 #include "ppcg_options.h"
30 struct isl_options
*isl
;
31 struct pet_options
*pet
;
32 struct ppcg_options
*ppcg
;
37 const char *ppcg_version(void);
38 static void print_version(void)
40 printf("%s", ppcg_version());
43 ISL_ARGS_START(struct options
, options_args
)
44 ISL_ARG_CHILD(struct options
, isl
, "isl", &isl_options_args
, "isl options")
45 ISL_ARG_CHILD(struct options
, pet
, "pet", &pet_options_args
, "pet options")
46 ISL_ARG_CHILD(struct options
, ppcg
, NULL
, &ppcg_options_args
, "ppcg options")
47 ISL_ARG_STR(struct options
, output
, 'o', NULL
,
48 "filename", NULL
, "output filename (c target)")
49 ISL_ARG_ARG(struct options
, input
, "input", NULL
)
50 ISL_ARG_VERSION(print_version
)
53 ISL_ARG_DEF(options
, struct options
, options_args
)
55 /* Copy the base name of "input" to "name" and return its length.
56 * "name" is not NULL terminated.
58 * In particular, remove all leading directory components and
59 * the final extension, if any.
61 int ppcg_extract_base_name(char *name
, const char *input
)
67 base
= strrchr(input
, '/');
72 ext
= strrchr(base
, '.');
73 len
= ext
? ext
- base
: strlen(base
);
75 memcpy(name
, base
, len
);
80 /* Is "stmt" a kill statement?
82 static int is_kill(struct pet_stmt
*stmt
)
84 if (stmt
->body
->type
!= pet_expr_unary
)
86 return stmt
->body
->op
== pet_op_kill
;
89 /* Is "stmt" not a kill statement?
91 static int is_not_kill(struct pet_stmt
*stmt
)
93 return !is_kill(stmt
);
96 /* Collect the iteration domains of the statements in "scop" that
99 static __isl_give isl_union_set
*collect_domains(struct pet_scop
*scop
,
100 int (*pred
)(struct pet_stmt
*stmt
))
104 isl_union_set
*domain
;
109 domain
= isl_union_set_empty(isl_set_get_space(scop
->context
));
111 for (i
= 0; i
< scop
->n_stmt
; ++i
) {
112 struct pet_stmt
*stmt
= scop
->stmts
[i
];
118 isl_die(isl_union_set_get_ctx(domain
),
119 isl_error_unsupported
,
120 "data dependent conditions not supported",
121 return isl_union_set_free(domain
));
123 domain_i
= isl_set_copy(scop
->stmts
[i
]->domain
);
124 domain
= isl_union_set_add_set(domain
, domain_i
);
130 /* Collect the iteration domains of the statements in "scop",
131 * skipping kill statements.
133 static __isl_give isl_union_set
*collect_non_kill_domains(struct pet_scop
*scop
)
135 return collect_domains(scop
, &is_not_kill
);
138 /* Does "expr" contain any call expressions?
140 static int expr_has_call(struct pet_expr
*expr
)
144 if (expr
->type
== pet_expr_call
)
147 for (i
= 0; i
< expr
->n_arg
; ++i
)
148 if (expr_has_call(expr
->args
[i
]))
154 /* Does "stmt" contain any call expressions?
156 static int has_call(struct pet_stmt
*stmt
)
158 return expr_has_call(stmt
->body
);
161 /* Collect the iteration domains of the statements in "scop"
162 * that contain a call expression.
164 static __isl_give isl_union_set
*collect_call_domains(struct pet_scop
*scop
)
166 return collect_domains(scop
, &has_call
);
169 /* Given a union of "tagged" access relations of the form
171 * [S_i[...] -> R_j[]] -> A_k[...]
173 * project out the "tags" (R_j[]).
174 * That is, return a union of relations of the form
176 * S_i[...] -> A_k[...]
178 static __isl_give isl_union_map
*project_out_tags(
179 __isl_take isl_union_map
*umap
)
183 proj
= isl_union_map_universe(isl_union_map_copy(umap
));
184 proj
= isl_union_set_unwrap(isl_union_map_domain(proj
));
185 proj
= isl_union_map_domain_map(proj
);
187 umap
= isl_union_map_apply_domain(umap
, proj
);
192 /* Construct a relation from the iteration domains to tagged iteration
193 * domains with as range the reference tags that appear
194 * in any of the reads, writes or kills.
195 * Store the result in ps->tagger.
197 * For example, if the statement with iteration space S[i,j]
198 * contains two array references R_1[] and R_2[], then ps->tagger will contain
200 * { S[i,j] -> [S[i,j] -> R_1[]]; S[i,j] -> [S[i,j] -> R_2[]] }
202 static void compute_tagger(struct ppcg_scop
*ps
)
204 isl_union_map
*tagged
, *tagger
;
206 tagged
= isl_union_map_copy(ps
->tagged_reads
);
207 tagged
= isl_union_map_union(tagged
,
208 isl_union_map_copy(ps
->tagged_may_writes
));
209 tagged
= isl_union_map_union(tagged
,
210 isl_union_map_copy(ps
->tagged_must_kills
));
212 tagger
= isl_union_map_universe(tagged
);
213 tagger
= isl_union_set_unwrap(isl_union_map_domain(tagger
));
214 tagger
= isl_union_map_reverse(isl_union_map_domain_map(tagger
));
219 /* Compute the live out accesses, i.e., the writes that are
220 * potentially not killed by any kills or any other writes, and
221 * store them in ps->live_out.
223 * We compute the "dependence" of any "kill" (an explicit kill
224 * or a must write) on any may write.
225 * The may writes with a "depending" kill are definitely killed.
226 * The remaining may writes can potentially be live out.
228 static void compute_live_out(struct ppcg_scop
*ps
)
230 isl_union_map
*tagger
;
231 isl_union_map
*schedule
;
232 isl_union_map
*empty
;
233 isl_union_map
*kills
;
234 isl_union_map
*exposed
;
235 isl_union_map
*covering
;
237 tagger
= isl_union_map_copy(ps
->tagger
);
238 schedule
= isl_union_map_copy(ps
->schedule
);
239 schedule
= isl_union_map_apply_domain(schedule
,
240 isl_union_map_copy(tagger
));
241 empty
= isl_union_map_empty(isl_union_set_get_space(ps
->domain
));
242 kills
= isl_union_map_union(isl_union_map_copy(ps
->tagged_must_writes
),
243 isl_union_map_copy(ps
->tagged_must_kills
));
244 isl_union_map_compute_flow(kills
, empty
,
245 isl_union_map_copy(ps
->tagged_may_writes
),
246 schedule
, NULL
, &covering
, NULL
, NULL
);
247 exposed
= isl_union_map_copy(ps
->tagged_may_writes
);
248 exposed
= isl_union_map_subtract_domain(exposed
,
249 isl_union_map_domain(covering
));
250 exposed
= isl_union_map_apply_range(tagger
, exposed
);
251 ps
->live_out
= exposed
;
254 /* Compute the flow dependences and the live_in accesses and store
255 * the results in ps->dep_flow and ps->live_in.
256 * A copy of the flow dependences, tagged with the reference tags
257 * is stored in ps->tagged_dep_flow.
259 * We first compute ps->tagged_dep_flow, i.e., the tagged flow dependences
260 * and then project out the tags.
262 static void compute_tagged_flow_dep(struct ppcg_scop
*ps
)
264 isl_union_map
*tagger
;
265 isl_union_map
*schedule
;
266 isl_union_map
*may_flow
;
267 isl_union_map
*live_in
, *may_live_in
;
269 tagger
= isl_union_map_copy(ps
->tagger
);
270 schedule
= isl_union_map_copy(ps
->schedule
);
271 schedule
= isl_union_map_apply_domain(schedule
, tagger
);
272 isl_union_map_compute_flow(isl_union_map_copy(ps
->tagged_reads
),
273 isl_union_map_copy(ps
->tagged_must_writes
),
274 isl_union_map_copy(ps
->tagged_may_writes
),
275 schedule
, &ps
->tagged_dep_flow
, &may_flow
,
276 &live_in
, &may_live_in
);
277 ps
->tagged_dep_flow
= isl_union_map_union(ps
->tagged_dep_flow
,
279 ps
->dep_flow
= isl_union_map_copy(ps
->tagged_dep_flow
);
280 ps
->dep_flow
= isl_union_map_zip(ps
->dep_flow
);
281 ps
->dep_flow
= isl_union_set_unwrap(isl_union_map_domain(ps
->dep_flow
));
282 live_in
= isl_union_map_union(live_in
, may_live_in
);
283 ps
->live_in
= project_out_tags(live_in
);
286 /* Compute the order dependences that prevent the potential live ranges
288 * "before" contains all pairs of statement iterations where
289 * the first is executed before the second according to the original schedule.
291 * In particular, construct a union of relations
293 * [R[...] -> R_1[]] -> [W[...] -> R_2[]]
295 * where [R[...] -> R_1[]] is the range of one or more live ranges
296 * (i.e., a read) and [W[...] -> R_2[]] is the domain of one or more
297 * live ranges (i.e., a write). Moreover, the read and the write
298 * access the same memory element and the read occurs before the write
299 * in the original schedule.
300 * The scheduler allows some of these dependences to be violated, provided
301 * the adjacent live ranges are all local (i.e., their domain and range
302 * are mapped to the same point by the current schedule band).
304 * Note that if a live range is not local, then we need to make
305 * sure it does not overlap with _any_ other live range, and not
306 * just with the "previous" and/or the "next" live range.
307 * We therefore add order dependences between reads and
308 * _any_ later potential write.
310 * We also need to be careful about writes without a corresponding read.
311 * They are already prevented from moving past non-local preceding
312 * intervals, but we also need to prevent them from moving past non-local
313 * following intervals. We therefore also add order dependences from
314 * potential writes that do not appear in any intervals
315 * to all later potential writes.
316 * Note that dead code elimination should have removed most of these
317 * dead writes, but the dead code elimination may not remove all dead writes,
318 * so we need to consider them to be safe.
320 static void compute_order_dependences(struct ppcg_scop
*ps
,
321 __isl_take isl_union_map
*before
)
323 isl_union_map
*reads
;
324 isl_union_map
*shared_access
;
325 isl_union_set
*matched
;
326 isl_union_map
*unmatched
;
327 isl_union_set
*domain
;
329 reads
= isl_union_map_copy(ps
->tagged_reads
);
330 matched
= isl_union_map_domain(isl_union_map_copy(ps
->tagged_dep_flow
));
331 unmatched
= isl_union_map_copy(ps
->tagged_may_writes
);
332 unmatched
= isl_union_map_subtract_domain(unmatched
, matched
);
333 reads
= isl_union_map_union(reads
, unmatched
);
334 shared_access
= isl_union_map_copy(ps
->tagged_may_writes
);
335 shared_access
= isl_union_map_reverse(shared_access
);
336 shared_access
= isl_union_map_apply_range(reads
, shared_access
);
337 shared_access
= isl_union_map_zip(shared_access
);
338 shared_access
= isl_union_map_intersect_domain(shared_access
,
339 isl_union_map_wrap(before
));
340 domain
= isl_union_map_domain(isl_union_map_copy(shared_access
));
341 shared_access
= isl_union_map_zip(shared_access
);
342 ps
->dep_order
= isl_union_set_unwrap(domain
);
343 ps
->tagged_dep_order
= shared_access
;
346 /* Compute the external false dependences of the program represented by "scop"
347 * in case live range reordering is allowed.
348 * "before" contains all pairs of statement iterations where
349 * the first is executed before the second according to the original schedule.
351 * The anti-dependences are already taken care of by the order dependences.
352 * The external false dependences are only used to ensure that live-in and
353 * live-out data is not overwritten by any writes inside the scop.
355 * In particular, the reads from live-in data need to precede any
356 * later write to the same memory element.
357 * As to live-out data, the last writes need to remain the last writes.
358 * That is, any earlier write in the original schedule needs to precede
359 * the last write to the same memory element in the computed schedule.
360 * The possible last writes have been computed by compute_live_out.
361 * They may include kills, but if the last access is a kill,
362 * then the corresponding dependences will effectively be ignored
363 * since we do not schedule any kill statements.
365 * Note that the set of live-in and live-out accesses may be
366 * an overapproximation. There may therefore be potential writes
367 * before a live-in access and after a live-out access.
369 static void compute_external_false_dependences(struct ppcg_scop
*ps
,
370 __isl_take isl_union_map
*before
)
372 isl_union_map
*shared_access
;
373 isl_union_map
*exposed
;
374 isl_union_map
*live_in
;
376 exposed
= isl_union_map_copy(ps
->live_out
);
378 exposed
= isl_union_map_reverse(exposed
);
379 shared_access
= isl_union_map_copy(ps
->may_writes
);
380 shared_access
= isl_union_map_apply_range(shared_access
, exposed
);
382 ps
->dep_external
= shared_access
;
384 live_in
= isl_union_map_apply_range(isl_union_map_copy(ps
->live_in
),
385 isl_union_map_reverse(isl_union_map_copy(ps
->may_writes
)));
387 ps
->dep_external
= isl_union_map_union(ps
->dep_external
, live_in
);
388 ps
->dep_external
= isl_union_map_intersect(ps
->dep_external
, before
);
391 /* Compute the dependences of the program represented by "scop"
392 * in case live range reordering is allowed.
394 * We compute the actual live ranges and the corresponding order
397 static void compute_live_range_reordering_dependences(struct ppcg_scop
*ps
)
399 isl_union_map
*before
;
401 before
= isl_union_map_lex_lt_union_map(
402 isl_union_map_copy(ps
->schedule
),
403 isl_union_map_copy(ps
->schedule
));
405 compute_tagged_flow_dep(ps
);
406 compute_order_dependences(ps
, isl_union_map_copy(before
));
407 compute_external_false_dependences(ps
, before
);
410 /* Compute the potential flow dependences and the potential live in
413 static void compute_flow_dep(struct ppcg_scop
*ps
)
415 isl_union_map
*may_flow
;
416 isl_union_map
*may_live_in
;
418 isl_union_map_compute_flow(isl_union_map_copy(ps
->reads
),
419 isl_union_map_copy(ps
->must_writes
),
420 isl_union_map_copy(ps
->may_writes
),
421 isl_union_map_copy(ps
->schedule
),
422 &ps
->dep_flow
, &may_flow
,
423 &ps
->live_in
, &may_live_in
);
425 ps
->dep_flow
= isl_union_map_union(ps
->dep_flow
, may_flow
);
426 ps
->live_in
= isl_union_map_union(ps
->live_in
, may_live_in
);
429 /* Compute the dependences of the program represented by "scop".
430 * Store the computed potential flow dependences
431 * in scop->dep_flow and the reads with potentially no corresponding writes in
433 * Store the potential live out accesses in scop->live_out.
434 * Store the potential false (anti and output) dependences in scop->dep_false.
436 * If live range reordering is allowed, then we compute a separate
437 * set of order dependences and a set of external false dependences
438 * in compute_live_range_reordering_dependences.
440 static void compute_dependences(struct ppcg_scop
*scop
)
442 isl_union_map
*dep1
, *dep2
;
443 isl_union_map
*may_source
;
448 compute_live_out(scop
);
450 if (scop
->options
->live_range_reordering
)
451 compute_live_range_reordering_dependences(scop
);
452 else if (scop
->options
->target
!= PPCG_TARGET_C
)
453 compute_tagged_flow_dep(scop
);
455 compute_flow_dep(scop
);
457 may_source
= isl_union_map_union(isl_union_map_copy(scop
->may_writes
),
458 isl_union_map_copy(scop
->reads
));
459 isl_union_map_compute_flow(isl_union_map_copy(scop
->may_writes
),
460 isl_union_map_copy(scop
->must_writes
),
461 may_source
, isl_union_map_copy(scop
->schedule
),
462 &dep1
, &dep2
, NULL
, NULL
);
464 scop
->dep_false
= isl_union_map_union(dep1
, dep2
);
465 scop
->dep_false
= isl_union_map_coalesce(scop
->dep_false
);
468 /* Eliminate dead code from ps->domain.
470 * In particular, intersect ps->domain with the (parts of) iteration
471 * domains that are needed to produce the output or for statement
472 * iterations that call functions.
474 * We start with the iteration domains that call functions
475 * and the set of iterations that last write to an array
476 * (except those that are later killed).
478 * Then we add those statement iterations that produce
479 * something needed by the "live" statements iterations.
480 * We keep doing this until no more statement iterations can be added.
481 * To ensure that the procedure terminates, we compute the affine
482 * hull of the live iterations (bounded to the original iteration
483 * domains) each time we have added extra iterations.
485 static void eliminate_dead_code(struct ppcg_scop
*ps
)
490 live
= isl_union_map_domain(isl_union_map_copy(ps
->live_out
));
491 if (!isl_union_set_is_empty(ps
->call
)) {
492 live
= isl_union_set_union(live
, isl_union_set_copy(ps
->call
));
493 live
= isl_union_set_coalesce(live
);
496 dep
= isl_union_map_copy(ps
->dep_flow
);
497 dep
= isl_union_map_reverse(dep
);
500 isl_union_set
*extra
;
502 extra
= isl_union_set_apply(isl_union_set_copy(live
),
503 isl_union_map_copy(dep
));
504 if (isl_union_set_is_subset(extra
, live
)) {
505 isl_union_set_free(extra
);
509 live
= isl_union_set_union(live
, extra
);
510 live
= isl_union_set_affine_hull(live
);
511 live
= isl_union_set_intersect(live
,
512 isl_union_set_copy(ps
->domain
));
515 isl_union_map_free(dep
);
517 ps
->domain
= isl_union_set_intersect(ps
->domain
, live
);
520 /* Intersect "set" with the set described by "str", taking the NULL
521 * string to represent the universal set.
523 static __isl_give isl_set
*set_intersect_str(__isl_take isl_set
*set
,
532 ctx
= isl_set_get_ctx(set
);
533 set2
= isl_set_read_from_str(ctx
, str
);
534 set
= isl_set_intersect(set
, set2
);
539 /* Does "expr" involve any data dependent accesses?
541 static int expr_has_data_dependent_accesses(struct pet_expr
*expr
)
545 for (i
= 0; i
< expr
->n_arg
; ++i
)
546 if (expr_has_data_dependent_accesses(expr
->args
[i
]))
549 if (expr
->type
== pet_expr_access
&& expr
->n_arg
> 0)
555 /* Does "stmt" contain any data dependent accesses?
557 static int stmt_has_data_dependent_accesses(struct pet_stmt
*stmt
)
559 return expr_has_data_dependent_accesses(stmt
->body
);
562 /* Does "scop" contain any data dependent accesses?
564 static int scop_has_data_dependent_accesses(struct pet_scop
*scop
)
570 for (i
= 0; i
< scop
->n_stmt
; ++i
)
571 if (stmt_has_data_dependent_accesses(scop
->stmts
[i
]))
577 static void *ppcg_scop_free(struct ppcg_scop
*ps
)
582 isl_set_free(ps
->context
);
583 isl_union_set_free(ps
->domain
);
584 isl_union_set_free(ps
->call
);
585 isl_union_map_free(ps
->tagged_reads
);
586 isl_union_map_free(ps
->reads
);
587 isl_union_map_free(ps
->live_in
);
588 isl_union_map_free(ps
->tagged_may_writes
);
589 isl_union_map_free(ps
->tagged_must_writes
);
590 isl_union_map_free(ps
->may_writes
);
591 isl_union_map_free(ps
->must_writes
);
592 isl_union_map_free(ps
->live_out
);
593 isl_union_map_free(ps
->tagged_must_kills
);
594 isl_union_map_free(ps
->tagged_dep_flow
);
595 isl_union_map_free(ps
->dep_flow
);
596 isl_union_map_free(ps
->dep_false
);
597 isl_union_map_free(ps
->dep_external
);
598 isl_union_map_free(ps
->tagged_dep_order
);
599 isl_union_map_free(ps
->dep_order
);
600 isl_union_map_free(ps
->schedule
);
601 isl_union_map_free(ps
->tagger
);
608 /* Extract a ppcg_scop from a pet_scop.
610 * The constructed ppcg_scop refers to elements from the pet_scop
611 * so the pet_scop should not be freed before the ppcg_scop.
613 static struct ppcg_scop
*ppcg_scop_from_pet_scop(struct pet_scop
*scop
,
614 struct ppcg_options
*options
)
617 struct ppcg_scop
*ps
;
622 ctx
= isl_set_get_ctx(scop
->context
);
624 ps
= isl_calloc_type(ctx
, struct ppcg_scop
);
628 ps
->options
= options
;
629 ps
->start
= scop
->start
;
631 ps
->context
= isl_set_copy(scop
->context
);
632 ps
->context
= set_intersect_str(ps
->context
, options
->ctx
);
633 ps
->domain
= collect_non_kill_domains(scop
);
634 ps
->call
= collect_call_domains(scop
);
635 ps
->tagged_reads
= pet_scop_collect_tagged_may_reads(scop
);
636 ps
->reads
= pet_scop_collect_may_reads(scop
);
637 ps
->tagged_may_writes
= pet_scop_collect_tagged_may_writes(scop
);
638 ps
->may_writes
= pet_scop_collect_may_writes(scop
);
639 ps
->tagged_must_writes
= pet_scop_collect_tagged_must_writes(scop
);
640 ps
->must_writes
= pet_scop_collect_must_writes(scop
);
641 ps
->tagged_must_kills
= pet_scop_collect_tagged_must_kills(scop
);
642 ps
->schedule
= pet_scop_collect_schedule(scop
);
643 ps
->n_type
= scop
->n_type
;
644 ps
->types
= scop
->types
;
645 ps
->n_array
= scop
->n_array
;
646 ps
->arrays
= scop
->arrays
;
647 ps
->n_stmt
= scop
->n_stmt
;
648 ps
->stmts
= scop
->stmts
;
651 compute_dependences(ps
);
652 eliminate_dead_code(ps
);
654 if (!ps
->context
|| !ps
->domain
|| !ps
->call
|| !ps
->reads
||
655 !ps
->may_writes
|| !ps
->must_writes
|| !ps
->tagged_must_kills
||
657 return ppcg_scop_free(ps
);
662 /* Internal data structure for ppcg_transform.
664 struct ppcg_transform_data
{
665 struct ppcg_options
*options
;
666 __isl_give isl_printer
*(*transform
)(__isl_take isl_printer
*p
,
667 struct ppcg_scop
*scop
, void *user
);
671 /* Callback for pet_transform_C_source that transforms
672 * the given pet_scop to a ppcg_scop before calling the
673 * ppcg_transform callback.
675 static __isl_give isl_printer
*transform(__isl_take isl_printer
*p
,
676 struct pet_scop
*scop
, void *user
)
678 struct ppcg_transform_data
*data
= user
;
679 struct ppcg_scop
*ps
;
681 if (pet_scop_has_data_dependent_conditions(scop
)) {
682 p
= pet_scop_print_original(scop
, p
);
687 scop
= pet_scop_align_params(scop
);
688 ps
= ppcg_scop_from_pet_scop(scop
, data
->options
);
690 p
= data
->transform(p
, ps
, data
->user
);
698 /* Transform the C source file "input" by rewriting each scop
699 * through a call to "transform".
700 * The transformed C code is written to "out".
702 * This is a wrapper around pet_transform_C_source that transforms
703 * the pet_scop to a ppcg_scop before calling "fn".
705 int ppcg_transform(isl_ctx
*ctx
, const char *input
, FILE *out
,
706 struct ppcg_options
*options
,
707 __isl_give isl_printer
*(*fn
)(__isl_take isl_printer
*p
,
708 struct ppcg_scop
*scop
, void *user
), void *user
)
710 struct ppcg_transform_data data
= { options
, fn
, user
};
711 return pet_transform_C_source(ctx
, input
, out
, &transform
, &data
);
714 /* Check consistency of options.
716 * Return -1 on error.
718 static int check_options(isl_ctx
*ctx
)
720 struct options
*options
;
722 options
= isl_ctx_peek_options(ctx
, &options_args
);
724 isl_die(ctx
, isl_error_internal
,
725 "unable to find options", return -1);
727 if (options
->ppcg
->openmp
&&
728 !isl_options_get_ast_build_atomic_upper_bound(ctx
))
729 isl_die(ctx
, isl_error_invalid
,
730 "OpenMP requires atomic bounds", return -1);
735 int main(int argc
, char **argv
)
739 struct options
*options
;
741 options
= options_new_with_defaults();
744 ctx
= isl_ctx_alloc_with_options(&options_args
, options
);
745 isl_options_set_schedule_outer_coincidence(ctx
, 1);
746 isl_options_set_schedule_maximize_band_depth(ctx
, 1);
747 argc
= options_parse(options
, argc
, argv
, ISL_ARG_ALL
);
749 if (check_options(ctx
) < 0)
751 else if (options
->ppcg
->target
== PPCG_TARGET_CUDA
)
752 r
= generate_cuda(ctx
, options
->ppcg
, options
->input
);
754 r
= generate_cpu(ctx
, options
->ppcg
, options
->input
,