1 /* Graphite polyhedral representation.
2 Copyright (C) 2009-2015 Free Software Foundation, Inc.
3 Contributed by Sebastian Pop <sebastian.pop@amd.com> and
4 Tobias Grosser <grosser@fim.uni-passau.de>.
6 This file is part of GCC.
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)
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.
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/>. */
25 #include <isl/constraint.h>
28 #include <isl/union_map.h>
29 #include <isl/constraint.h>
34 /* Since ISL-0.13, the extern is in val_gmp.h. */
35 #if !defined(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE) && defined(__cplusplus)
38 #include <isl/val_gmp.h>
39 #if !defined(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE) && defined(__cplusplus)
45 #include "coretypes.h"
46 #include "diagnostic-core.h"
50 #include "double-int.h"
58 #include "fold-const.h"
61 #include "hard-reg-set.h"
64 #include "dominance.h"
66 #include "basic-block.h"
67 #include "tree-ssa-alias.h"
68 #include "internal-fn.h"
69 #include "gimple-expr.h"
72 #include "gimple-iterator.h"
73 #include "tree-ssa-loop.h"
75 #include "gimple-pretty-print.h"
77 #include "tree-chrec.h"
78 #include "tree-data-ref.h"
79 #include "tree-scalar-evolution.h"
83 #include "graphite-poly.h"
85 #define OPENSCOP_MAX_STRING 256
88 /* Print to STDERR the GMP value VAL. */
91 debug_gmp_value (mpz_t val)
93 gmp_fprintf (stderr, "%Zd", val);
96 /* Return the maximal loop depth in SCOP. */
99 scop_max_loop_depth (scop_p scop)
103 int max_nb_loops = 0;
105 FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
107 int nb_loops = pbb_dim_iter_domain (pbb);
108 if (max_nb_loops < nb_loops)
109 max_nb_loops = nb_loops;
115 /* Prints to FILE the scattering function of PBB, at some VERBOSITY
119 print_scattering_function_1 (FILE *file, poly_bb_p pbb, int verbosity)
125 fprintf (file, "# scattering bb_%d (\n", pbb_index (pbb));
126 fprintf (file, "#eq");
128 for (i = 0; i < pbb_nb_scattering_transform (pbb); i++)
129 fprintf (file, " s%d", (int) i);
131 for (i = 0; i < pbb_nb_local_vars (pbb); i++)
132 fprintf (file, " lv%d", (int) i);
134 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
135 fprintf (file, " i%d", (int) i);
137 for (i = 0; i < pbb_nb_params (pbb); i++)
138 fprintf (file, " p%d", (int) i);
140 fprintf (file, " cst\n");
143 fprintf (file, "isl\n");
144 print_isl_map (file, pbb->transformed ? pbb->transformed : pbb->schedule);
147 fprintf (file, "#)\n");
150 /* Prints to FILE the scattering function of PBB, at some VERBOSITY
154 print_scattering_function (FILE *file, poly_bb_p pbb, int verbosity)
156 if (!PBB_TRANSFORMED (pbb))
159 if (pbb->schedule || pbb->transformed)
162 fprintf (file, "# Scattering function is provided\n");
164 fprintf (file, "1\n");
169 fprintf (file, "# Scattering function is not provided\n");
171 fprintf (file, "0\n");
175 print_scattering_function_1 (file, pbb, verbosity);
178 fprintf (file, "# Scattering names are not provided\n");
180 fprintf (file, "0\n");
184 /* Prints to FILE the iteration domain of PBB, at some VERBOSITY
188 print_iteration_domain (FILE *file, poly_bb_p pbb, int verbosity)
190 print_pbb_domain (file, pbb, verbosity);
193 /* Prints to FILE the scattering functions of every PBB of SCOP. */
196 print_scattering_functions (FILE *file, scop_p scop, int verbosity)
201 FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
202 print_scattering_function (file, pbb, verbosity);
205 /* Prints to FILE the iteration domains of every PBB of SCOP, at some
209 print_iteration_domains (FILE *file, scop_p scop, int verbosity)
214 FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
215 print_iteration_domain (file, pbb, verbosity);
218 /* Prints to STDERR the scattering function of PBB, at some VERBOSITY
222 debug_scattering_function (poly_bb_p pbb, int verbosity)
224 print_scattering_function (stderr, pbb, verbosity);
227 /* Prints to STDERR the iteration domain of PBB, at some VERBOSITY
231 debug_iteration_domain (poly_bb_p pbb, int verbosity)
233 print_iteration_domain (stderr, pbb, verbosity);
236 /* Prints to STDERR the scattering functions of every PBB of SCOP, at
237 some VERBOSITY level. */
240 debug_scattering_functions (scop_p scop, int verbosity)
242 print_scattering_functions (stderr, scop, verbosity);
245 /* Prints to STDERR the iteration domains of every PBB of SCOP, at
246 some VERBOSITY level. */
249 debug_iteration_domains (scop_p scop, int verbosity)
251 print_iteration_domains (stderr, scop, verbosity);
254 /* Apply graphite transformations to all the basic blocks of SCOP. */
257 apply_poly_transforms (scop_p scop)
259 bool transform_done = false;
261 /* Generate code even if we did not apply any real transformation.
262 This also allows to check the performance for the identity
263 transformation: GIMPLE -> GRAPHITE -> GIMPLE
264 Keep in mind that CLooG optimizes in control, so the loop structure
265 may change, even if we only use -fgraphite-identity. */
266 if (flag_graphite_identity)
267 transform_done = true;
269 if (flag_loop_parallelize_all)
270 transform_done = true;
273 transform_done |= scop_do_block (scop);
276 if (flag_loop_strip_mine)
277 transform_done |= scop_do_strip_mine (scop, 0);
279 if (flag_loop_interchange)
280 transform_done |= scop_do_interchange (scop);
283 /* This pass needs to be run at the final stage, as it does not
285 if (flag_loop_optimize_isl || flag_loop_unroll_jam)
286 transform_done |= optimize_isl (scop);
288 return transform_done;
291 /* Create a new polyhedral data reference and add it to PBB. It is
292 defined by its ACCESSES, its TYPE, and the number of subscripts
296 new_poly_dr (poly_bb_p pbb, int dr_base_object_set,
297 enum poly_dr_type type, void *cdr, graphite_dim_t nb_subscripts,
298 isl_map *acc, isl_set *extent)
301 poly_dr_p pdr = XNEW (struct poly_dr);
304 PDR_BASE_OBJECT_SET (pdr) = dr_base_object_set;
305 PDR_NB_REFS (pdr) = 1;
308 pdr->extent = extent;
309 PDR_TYPE (pdr) = type;
311 PDR_NB_SUBSCRIPTS (pdr) = nb_subscripts;
312 PBB_DRS (pbb).safe_push (pdr);
315 /* Free polyhedral data reference PDR. */
318 free_poly_dr (poly_dr_p pdr)
320 isl_map_free (pdr->accesses);
321 isl_set_free (pdr->extent);
325 /* Create a new polyhedral black box. */
328 new_poly_bb (scop_p scop, void *black_box)
330 poly_bb_p pbb = XNEW (struct poly_bb);
333 pbb->schedule = NULL;
334 pbb->transformed = NULL;
336 pbb->map_sepclass = NULL;
337 PBB_SCOP (pbb) = scop;
338 pbb_set_black_box (pbb, black_box);
339 PBB_TRANSFORMED (pbb) = NULL;
340 PBB_SAVED (pbb) = NULL;
341 PBB_ORIGINAL (pbb) = NULL;
342 PBB_DRS (pbb).create (3);
343 PBB_IS_REDUCTION (pbb) = false;
344 GBB_PBB ((gimple_bb_p) black_box) = pbb;
349 /* Free polyhedral black box. */
352 free_poly_bb (poly_bb_p pbb)
357 isl_set_free (pbb->domain);
358 isl_map_free (pbb->schedule);
359 isl_map_free (pbb->transformed);
360 isl_map_free (pbb->saved);
362 if (PBB_DRS (pbb).exists ())
363 FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
366 PBB_DRS (pbb).release ();
371 print_pdr_access_layout (FILE *file, poly_bb_p pbb, poly_dr_p pdr)
375 fprintf (file, "# eq");
377 fprintf (file, " alias");
379 for (i = 0; i < PDR_NB_SUBSCRIPTS (pdr); i++)
380 fprintf (file, " sub%d", (int) i);
382 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
383 fprintf (file, " i%d", (int) i);
385 for (i = 0; i < pbb_nb_params (pbb); i++)
386 fprintf (file, " p%d", (int) i);
388 fprintf (file, " cst\n");
391 /* Prints to FILE the polyhedral data reference PDR, at some VERBOSITY
395 print_pdr (FILE *file, poly_dr_p pdr, int verbosity)
399 fprintf (file, "# pdr_%d (", PDR_ID (pdr));
401 switch (PDR_TYPE (pdr))
404 fprintf (file, "read \n");
408 fprintf (file, "write \n");
412 fprintf (file, "may_write \n");
419 dump_data_reference (file, (data_reference_p) PDR_CDR (pdr));
424 fprintf (file, "# data accesses (\n");
425 print_pdr_access_layout (file, PDR_PBB (pdr), pdr);
428 /* XXX isl dump accesses/subscripts */
431 fprintf (file, "#)\n");
434 fprintf (file, "#)\n");
437 /* Prints to STDERR the polyhedral data reference PDR, at some
441 debug_pdr (poly_dr_p pdr, int verbosity)
443 print_pdr (stderr, pdr, verbosity);
446 /* Creates a new SCOP containing REGION. */
449 new_scop (void *region)
451 scop_p scop = XNEW (struct scop);
453 scop->context = NULL;
454 scop->must_raw = NULL;
455 scop->may_raw = NULL;
456 scop->must_raw_no_source = NULL;
457 scop->may_raw_no_source = NULL;
458 scop->must_war = NULL;
459 scop->may_war = NULL;
460 scop->must_war_no_source = NULL;
461 scop->may_war_no_source = NULL;
462 scop->must_waw = NULL;
463 scop->may_waw = NULL;
464 scop->must_waw_no_source = NULL;
465 scop->may_waw_no_source = NULL;
466 scop_set_region (scop, region);
467 SCOP_BBS (scop).create (3);
468 SCOP_ORIGINAL_SCHEDULE (scop) = NULL;
469 SCOP_TRANSFORMED_SCHEDULE (scop) = NULL;
470 SCOP_SAVED_SCHEDULE (scop) = NULL;
471 POLY_SCOP_P (scop) = false;
479 free_scop (scop_p scop)
484 FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
487 SCOP_BBS (scop).release ();
489 isl_set_free (scop->context);
490 isl_union_map_free (scop->must_raw);
491 isl_union_map_free (scop->may_raw);
492 isl_union_map_free (scop->must_raw_no_source);
493 isl_union_map_free (scop->may_raw_no_source);
494 isl_union_map_free (scop->must_war);
495 isl_union_map_free (scop->may_war);
496 isl_union_map_free (scop->must_war_no_source);
497 isl_union_map_free (scop->may_war_no_source);
498 isl_union_map_free (scop->must_waw);
499 isl_union_map_free (scop->may_waw);
500 isl_union_map_free (scop->must_waw_no_source);
501 isl_union_map_free (scop->may_waw_no_source);
502 free_lst (SCOP_ORIGINAL_SCHEDULE (scop));
503 free_lst (SCOP_TRANSFORMED_SCHEDULE (scop));
504 free_lst (SCOP_SAVED_SCHEDULE (scop));
508 /* Print to FILE the domain of PBB in OpenScop format, at some VERBOSITY
512 openscop_print_pbb_domain (FILE *file, poly_bb_p pbb, int verbosity)
515 gimple_bb_p gbb = PBB_BLACK_BOX (pbb);
522 fprintf (file, "\n# Iteration domain of bb_%d (\n", GBB_BB (gbb)->index);
523 fprintf (file, "#eq");
525 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
526 fprintf (file, " i%d", (int) i);
528 for (i = 0; i < pbb_nb_params (pbb); i++)
529 fprintf (file, " p%d", (int) i);
531 fprintf (file, " cst\n");
534 fprintf (file, "XXX isl\n");
537 fprintf (file, "#)\n");
540 /* Print to FILE the domain of PBB, at some VERBOSITY level. */
543 print_pbb_domain (FILE *file, poly_bb_p pbb, int verbosity ATTRIBUTE_UNUSED)
545 print_isl_set (file, pbb->domain);
548 /* Dump the cases of a graphite basic block GBB on FILE. */
551 dump_gbb_cases (FILE *file, gimple_bb_p gbb)
560 cases = GBB_CONDITION_CASES (gbb);
561 if (cases.is_empty ())
564 fprintf (file, "# cases bb_%d (\n", GBB_BB (gbb)->index);
566 FOR_EACH_VEC_ELT (cases, i, stmt)
568 fprintf (file, "# ");
569 print_gimple_stmt (file, stmt, 0, 0);
572 fprintf (file, "#)\n");
575 /* Dump conditions of a graphite basic block GBB on FILE. */
578 dump_gbb_conditions (FILE *file, gimple_bb_p gbb)
582 vec<gimple> conditions;
587 conditions = GBB_CONDITIONS (gbb);
588 if (conditions.is_empty ())
591 fprintf (file, "# conditions bb_%d (\n", GBB_BB (gbb)->index);
593 FOR_EACH_VEC_ELT (conditions, i, stmt)
595 fprintf (file, "# ");
596 print_gimple_stmt (file, stmt, 0, 0);
599 fprintf (file, "#)\n");
602 /* Print to FILE all the data references of PBB, at some VERBOSITY
606 print_pdrs (FILE *file, poly_bb_p pbb, int verbosity)
613 if (PBB_DRS (pbb).length () == 0)
616 fprintf (file, "# Access informations are not provided\n");\
617 fprintf (file, "0\n");
622 fprintf (file, "# Data references (\n");
625 fprintf (file, "# Access informations are provided\n");
626 fprintf (file, "1\n");
628 FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
629 if (PDR_TYPE (pdr) == PDR_READ)
635 fprintf (file, "# Read data references (\n");
638 fprintf (file, "# Read access informations\n");
639 fprintf (file, "%d\n", nb_reads);
641 FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
642 if (PDR_TYPE (pdr) == PDR_READ)
643 print_pdr (file, pdr, verbosity);
646 fprintf (file, "#)\n");
649 fprintf (file, "# Write data references (\n");
652 fprintf (file, "# Write access informations\n");
653 fprintf (file, "%d\n", nb_writes);
655 FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
656 if (PDR_TYPE (pdr) != PDR_READ)
657 print_pdr (file, pdr, verbosity);
660 fprintf (file, "#)\n");
663 fprintf (file, "#)\n");
666 /* Print to STDERR all the data references of PBB. */
669 debug_pdrs (poly_bb_p pbb, int verbosity)
671 print_pdrs (stderr, pbb, verbosity);
674 /* Print to FILE the body of PBB, at some VERBOSITY level.
675 If statement_body_provided is false statement body is not printed. */
678 print_pbb_body (FILE *file, poly_bb_p pbb, int verbosity,
679 bool statement_body_provided)
682 fprintf (file, "# Body (\n");
684 if (!statement_body_provided)
687 fprintf (file, "# Statement body is not provided\n");
689 fprintf (file, "0\n");
692 fprintf (file, "#)\n");
697 fprintf (file, "# Statement body is provided\n");
698 fprintf (file, "1\n");
701 fprintf (file, "# Original iterator names\n# Iterator names are not provided yet.\n");
704 fprintf (file, "# Statement body\n");
706 fprintf (file, "{\n");
707 dump_bb (file, pbb_bb (pbb), 0, 0);
708 fprintf (file, "}\n");
711 fprintf (file, "#)\n");
714 /* Print to FILE the domain and scattering function of PBB, at some
718 print_pbb (FILE *file, poly_bb_p pbb, int verbosity)
722 fprintf (file, "# pbb_%d (\n", pbb_index (pbb));
723 dump_gbb_conditions (file, PBB_BLACK_BOX (pbb));
724 dump_gbb_cases (file, PBB_BLACK_BOX (pbb));
727 openscop_print_pbb_domain (file, pbb, verbosity);
728 print_scattering_function (file, pbb, verbosity);
729 print_pdrs (file, pbb, verbosity);
730 print_pbb_body (file, pbb, verbosity, false);
733 fprintf (file, "#)\n");
736 /* Print to FILE the parameters of SCOP, at some VERBOSITY level. */
739 print_scop_params (FILE *file, scop_p scop, int verbosity)
745 fprintf (file, "# parameters (\n");
747 if (SESE_PARAMS (SCOP_REGION (scop)).length ())
750 fprintf (file, "# Parameter names are provided\n");
752 fprintf (file, "1\n");
755 fprintf (file, "# Parameter names\n");
760 fprintf (file, "# Parameter names are not provided\n");
761 fprintf (file, "0\n");
764 FOR_EACH_VEC_ELT (SESE_PARAMS (SCOP_REGION (scop)), i, t)
766 print_generic_expr (file, t, 0);
770 fprintf (file, "\n");
773 fprintf (file, "#)\n");
776 /* Print to FILE the context of SCoP in OpenScop format, at some VERBOSITY
780 openscop_print_scop_context (FILE *file, scop_p scop, int verbosity)
786 fprintf (file, "# Context (\n");
787 fprintf (file, "#eq");
789 for (i = 0; i < scop_nb_params (scop); i++)
790 fprintf (file, " p%d", (int) i);
792 fprintf (file, " cst\n");
796 /* XXX isl print context */
797 fprintf (file, "XXX isl\n");
799 fprintf (file, "0 %d 0 0 0 %d\n", (int) scop_nb_params (scop) + 2,
800 (int) scop_nb_params (scop));
803 fprintf (file, "# )\n");
806 /* Print to FILE the context of SCoP, at some VERBOSITY level. */
809 print_scop_context (FILE *file, scop_p scop, int verbosity)
815 fprintf (file, "# Context (\n");
816 fprintf (file, "#eq");
818 for (i = 0; i < scop_nb_params (scop); i++)
819 fprintf (file, " p%d", (int) i);
821 fprintf (file, " cst\n");
825 print_isl_set (file, scop->context);
827 fprintf (file, "no isl context %d\n", (int) scop_nb_params (scop) + 2);
830 fprintf (file, "# )\n");
833 /* Print to FILE the SCOP, at some VERBOSITY level. */
836 print_scop (FILE *file, scop_p scop, int verbosity)
841 fprintf (file, "SCoP 1\n#(\n");
842 fprintf (file, "# Language\nGimple\n");
843 openscop_print_scop_context (file, scop, verbosity);
844 print_scop_params (file, scop, verbosity);
847 fprintf (file, "# Number of statements\n");
849 fprintf (file, "%d\n", SCOP_BBS (scop).length ());
851 FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
852 print_pbb (file, pbb, verbosity);
856 fprintf (file, "# original_lst (\n");
857 print_lst (file, SCOP_ORIGINAL_SCHEDULE (scop), 0);
858 fprintf (file, "\n#)\n");
860 fprintf (file, "# transformed_lst (\n");
861 print_lst (file, SCOP_TRANSFORMED_SCHEDULE (scop), 0);
862 fprintf (file, "\n#)\n");
865 fprintf (file, "#)\n");
868 /* Print to STDERR the domain of PBB, at some VERBOSITY level. */
871 debug_pbb_domain (poly_bb_p pbb, int verbosity)
873 print_pbb_domain (stderr, pbb, verbosity);
876 /* Print to FILE the domain and scattering function of PBB, at some
880 debug_pbb (poly_bb_p pbb, int verbosity)
882 print_pbb (stderr, pbb, verbosity);
885 /* Print to STDERR the context of SCOP, at some VERBOSITY level. */
888 debug_scop_context (scop_p scop, int verbosity)
890 print_scop_context (stderr, scop, verbosity);
893 /* Print to STDERR the SCOP, at some VERBOSITY level. */
896 debug_scop (scop_p scop, int verbosity)
898 print_scop (stderr, scop, verbosity);
901 /* Print to STDERR the parameters of SCOP, at some VERBOSITY
905 debug_scop_params (scop_p scop, int verbosity)
907 print_scop_params (stderr, scop, verbosity);
910 extern isl_ctx *the_isl_ctx;
912 print_isl_set (FILE *f, isl_set *set)
914 isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
915 p = isl_printer_print_set (p, set);
916 isl_printer_free (p);
920 debug_isl_set (isl_set *set)
922 print_isl_set (stderr, set);
926 print_isl_map (FILE *f, isl_map *map)
928 isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
929 p = isl_printer_print_map (p, map);
930 isl_printer_free (p);
934 debug_isl_map (isl_map *map)
936 print_isl_map (stderr, map);
940 print_isl_aff (FILE *f, isl_aff *aff)
942 isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
943 p = isl_printer_print_aff (p, aff);
944 isl_printer_free (p);
948 debug_isl_aff (isl_aff *aff)
950 print_isl_aff (stderr, aff);
954 print_isl_constraint (FILE *f, isl_constraint *c)
956 isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
957 p = isl_printer_print_constraint (p, c);
958 isl_printer_free (p);
962 debug_isl_constraint (isl_constraint *c)
964 print_isl_constraint (stderr, c);
967 /* Returns the number of iterations RES of the loop around PBB at
968 time(scattering) dimension TIME_DEPTH. */
971 pbb_number_of_iterations_at_time (poly_bb_p pbb,
972 graphite_dim_t time_depth,
975 isl_set *transdomain;
978 isl_val *isllb, *islub;
980 /* Map the iteration domain through the current scatter, and work
981 on the resulting set. */
982 transdomain = isl_set_apply (isl_set_copy (pbb->domain),
983 isl_map_copy (pbb->transformed));
985 /* Select the time_depth' dimension via an affine expression. */
986 dc = isl_set_get_space (transdomain);
987 aff = isl_aff_zero_on_domain (isl_local_space_from_space (dc));
988 aff = isl_aff_set_coefficient_si (aff, isl_dim_in, time_depth, 1);
990 /* And find the min/max for that function. */
991 /* XXX isl check results? */
992 isllb = isl_set_min_val (transdomain, aff);
993 islub = isl_set_max_val (transdomain, aff);
995 islub = isl_val_sub (islub, isllb);
996 islub = isl_val_add_ui (islub, 1);
997 isl_val_get_num_gmp (islub, res);
999 isl_val_free (islub);
1001 isl_set_free (transdomain);
1004 /* Translates LOOP to LST. */
1007 loop_to_lst (loop_p loop, vec<poly_bb_p> bbs, int *i)
1013 for (; bbs.iterate (*i, &pbb); (*i)++)
1016 basic_block bb = GBB_BB (PBB_BLACK_BOX (pbb));
1018 if (bb->loop_father == loop)
1019 stmt = new_lst_stmt (pbb);
1020 else if (flow_bb_inside_loop_p (loop, bb))
1022 loop_p next = loop->inner;
1024 while (next && !flow_bb_inside_loop_p (next, bb))
1027 stmt = loop_to_lst (next, bbs, i);
1032 return new_lst_loop (seq);
1035 seq.safe_push (stmt);
1038 return new_lst_loop (seq);
1041 /* Reads the original scattering of the SCOP and returns an LST
1045 scop_to_lst (scop_p scop)
1048 int i, n = SCOP_BBS (scop).length ();
1051 sese region = SCOP_REGION (scop);
1053 for (i = 0; i < n; i++)
1055 poly_bb_p pbb = SCOP_BBS (scop)[i];
1056 loop_p loop = outermost_loop_in_sese (region, GBB_BB (PBB_BLACK_BOX (pbb)));
1058 if (loop_in_sese_p (loop, region))
1059 res = loop_to_lst (loop, SCOP_BBS (scop), &i);
1061 res = new_lst_stmt (pbb);
1063 seq.safe_push (res);
1066 res = new_lst_loop (seq);
1067 SCOP_ORIGINAL_SCHEDULE (scop) = res;
1068 SCOP_TRANSFORMED_SCHEDULE (scop) = copy_lst (res);
1071 /* Print to FILE on a new line COLUMN white spaces. */
1074 lst_indent_to (FILE *file, int column)
1079 fprintf (file, "\n#");
1081 for (i = 0; i < column; i++)
1082 fprintf (file, " ");
1085 /* Print LST to FILE with INDENT spaces of indentation. */
1088 print_lst (FILE *file, lst_p lst, int indent)
1093 lst_indent_to (file, indent);
1095 if (LST_LOOP_P (lst))
1100 if (LST_LOOP_FATHER (lst))
1101 fprintf (file, "%d (loop", lst_dewey_number (lst));
1103 fprintf (file, "#(root");
1105 FOR_EACH_VEC_ELT (LST_SEQ (lst), i, l)
1106 print_lst (file, l, indent + 2);
1108 fprintf (file, ")");
1111 fprintf (file, "%d stmt_%d", lst_dewey_number (lst), pbb_index (LST_PBB (lst)));
1114 /* Print LST to STDERR. */
1117 debug_lst (lst_p lst)
1119 print_lst (stderr, lst, 0);
1122 /* Pretty print to FILE the loop statement tree LST in DOT format. */
1125 dot_lst_1 (FILE *file, lst_p lst)
1130 if (LST_LOOP_P (lst))
1135 if (!LST_LOOP_FATHER (lst))
1136 fprintf (file, "L -> L_%d_%d\n",
1138 lst_dewey_number (lst));
1140 fprintf (file, "L_%d_%d -> L_%d_%d\n",
1141 lst_depth (LST_LOOP_FATHER (lst)),
1142 lst_dewey_number (LST_LOOP_FATHER (lst)),
1144 lst_dewey_number (lst));
1146 FOR_EACH_VEC_ELT (LST_SEQ (lst), i, l)
1147 dot_lst_1 (file, l);
1151 fprintf (file, "L_%d_%d -> S_%d\n",
1152 lst_depth (LST_LOOP_FATHER (lst)),
1153 lst_dewey_number (LST_LOOP_FATHER (lst)),
1154 pbb_index (LST_PBB (lst)));
1158 /* Display the LST using dotty. */
1163 /* When debugging, enable the following code. This cannot be used
1164 in production compilers because it calls "system". */
1166 FILE *stream = fopen ("/tmp/lst.dot", "w");
1167 gcc_assert (stream);
1169 fputs ("digraph all {\n", stream);
1170 dot_lst_1 (stream, lst);
1171 fputs ("}\n\n", stream);
1174 system ("dotty /tmp/lst.dot &");
1176 fputs ("digraph all {\n", stderr);
1177 dot_lst_1 (stderr, lst);
1178 fputs ("}\n\n", stderr);
1183 /* Reverse the loop around PBB at level DEPTH. */
1186 reverse_loop_at_level (poly_bb_p pbb, int depth)
1188 unsigned i, depth_dim = psct_dynamic_dim (pbb, depth);
1189 isl_space *d = isl_map_get_space (pbb->transformed);
1190 isl_space *d1 = isl_space_range (d);
1191 unsigned n = isl_space_dim (d1, isl_dim_out);
1192 isl_space *d2 = isl_space_add_dims (d1, isl_dim_in, n);
1193 isl_map *x = isl_map_universe (isl_space_copy (d2));
1194 isl_constraint *c = isl_equality_alloc (isl_local_space_from_space (d2));
1196 for (i = 0; i < n; i++)
1198 x = isl_map_equate (x, isl_dim_in, i, isl_dim_out, i);
1200 c = isl_constraint_set_coefficient_si (c, isl_dim_in, depth_dim, 1);
1201 c = isl_constraint_set_coefficient_si (c, isl_dim_out, depth_dim, 1);
1202 x = isl_map_add_constraint (x, c);
1206 /* Reverse the loop at level DEPTH for all the PBBS. */
1209 reverse_loop_for_pbbs (scop_p scop, vec<poly_bb_p> pbbs, int depth)
1213 isl_space *space = isl_space_from_domain (isl_set_get_space (scop->context));
1214 isl_union_map *res = isl_union_map_empty (space);
1216 for (i = 0; pbbs.iterate (i, &pbb); i++)
1217 res = isl_union_map_add_map (res, reverse_loop_at_level (pbb, depth));