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/>. */
27 #include <isl/union_map.h>
28 #include <isl/constraint.h>
33 /* Since ISL-0.13, the extern is in val_gmp.h. */
34 #if !defined(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE) && defined(__cplusplus)
37 #include <isl/val_gmp.h>
38 #if !defined(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE) && defined(__cplusplus)
44 #include "coretypes.h"
45 #include "diagnostic-core.h"
49 #include "double-int.h"
57 #include "fold-const.h"
60 #include "hard-reg-set.h"
63 #include "dominance.h"
65 #include "basic-block.h"
66 #include "tree-ssa-alias.h"
67 #include "internal-fn.h"
68 #include "gimple-expr.h"
71 #include "gimple-iterator.h"
72 #include "tree-ssa-loop.h"
74 #include "gimple-pretty-print.h"
76 #include "tree-chrec.h"
77 #include "tree-data-ref.h"
78 #include "tree-scalar-evolution.h"
82 #include "graphite-poly.h"
84 #define OPENSCOP_MAX_STRING 256
87 /* Print to STDERR the GMP value VAL. */
90 debug_gmp_value (mpz_t val)
92 gmp_fprintf (stderr, "%Zd", val);
95 /* Return the maximal loop depth in SCOP. */
98 scop_max_loop_depth (scop_p scop)
102 int max_nb_loops = 0;
104 FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
106 int nb_loops = pbb_dim_iter_domain (pbb);
107 if (max_nb_loops < nb_loops)
108 max_nb_loops = nb_loops;
114 /* Prints to FILE the scattering function of PBB, at some VERBOSITY
118 print_scattering_function_1 (FILE *file, poly_bb_p pbb, int verbosity)
124 fprintf (file, "# scattering bb_%d (\n", pbb_index (pbb));
125 fprintf (file, "#eq");
127 for (i = 0; i < pbb_nb_scattering_transform (pbb); i++)
128 fprintf (file, " s%d", (int) i);
130 for (i = 0; i < pbb_nb_local_vars (pbb); i++)
131 fprintf (file, " lv%d", (int) i);
133 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
134 fprintf (file, " i%d", (int) i);
136 for (i = 0; i < pbb_nb_params (pbb); i++)
137 fprintf (file, " p%d", (int) i);
139 fprintf (file, " cst\n");
142 fprintf (file, "isl\n");
143 print_isl_map (file, pbb->transformed ? pbb->transformed : pbb->schedule);
146 fprintf (file, "#)\n");
149 /* Prints to FILE the scattering function of PBB, at some VERBOSITY
153 print_scattering_function (FILE *file, poly_bb_p pbb, int verbosity)
155 if (!PBB_TRANSFORMED (pbb))
158 if (pbb->schedule || pbb->transformed)
161 fprintf (file, "# Scattering function is provided\n");
163 fprintf (file, "1\n");
168 fprintf (file, "# Scattering function is not provided\n");
170 fprintf (file, "0\n");
174 print_scattering_function_1 (file, pbb, verbosity);
177 fprintf (file, "# Scattering names are not provided\n");
179 fprintf (file, "0\n");
183 /* Prints to FILE the iteration domain of PBB, at some VERBOSITY
187 print_iteration_domain (FILE *file, poly_bb_p pbb, int verbosity)
189 print_pbb_domain (file, pbb, verbosity);
192 /* Prints to FILE the scattering functions of every PBB of SCOP. */
195 print_scattering_functions (FILE *file, scop_p scop, int verbosity)
200 FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
201 print_scattering_function (file, pbb, verbosity);
204 /* Prints to FILE the iteration domains of every PBB of SCOP, at some
208 print_iteration_domains (FILE *file, scop_p scop, int verbosity)
213 FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
214 print_iteration_domain (file, pbb, verbosity);
217 /* Prints to STDERR the scattering function of PBB, at some VERBOSITY
221 debug_scattering_function (poly_bb_p pbb, int verbosity)
223 print_scattering_function (stderr, pbb, verbosity);
226 /* Prints to STDERR the iteration domain of PBB, at some VERBOSITY
230 debug_iteration_domain (poly_bb_p pbb, int verbosity)
232 print_iteration_domain (stderr, pbb, verbosity);
235 /* Prints to STDERR the scattering functions of every PBB of SCOP, at
236 some VERBOSITY level. */
239 debug_scattering_functions (scop_p scop, int verbosity)
241 print_scattering_functions (stderr, scop, verbosity);
244 /* Prints to STDERR the iteration domains of every PBB of SCOP, at
245 some VERBOSITY level. */
248 debug_iteration_domains (scop_p scop, int verbosity)
250 print_iteration_domains (stderr, scop, verbosity);
253 /* Apply graphite transformations to all the basic blocks of SCOP. */
256 apply_poly_transforms (scop_p scop)
258 bool transform_done = false;
260 /* Generate code even if we did not apply any real transformation.
261 This also allows to check the performance for the identity
262 transformation: GIMPLE -> GRAPHITE -> GIMPLE
263 Keep in mind that CLooG optimizes in control, so the loop structure
264 may change, even if we only use -fgraphite-identity. */
265 if (flag_graphite_identity)
266 transform_done = true;
268 if (flag_loop_parallelize_all)
269 transform_done = true;
272 transform_done |= scop_do_block (scop);
275 if (flag_loop_strip_mine)
276 transform_done |= scop_do_strip_mine (scop, 0);
278 if (flag_loop_interchange)
279 transform_done |= scop_do_interchange (scop);
282 /* This pass needs to be run at the final stage, as it does not
284 if (flag_loop_optimize_isl || flag_loop_unroll_jam)
285 transform_done |= optimize_isl (scop);
287 return transform_done;
290 /* Create a new polyhedral data reference and add it to PBB. It is
291 defined by its ACCESSES, its TYPE, and the number of subscripts
295 new_poly_dr (poly_bb_p pbb, int dr_base_object_set,
296 enum poly_dr_type type, void *cdr, graphite_dim_t nb_subscripts,
297 isl_map *acc, isl_set *extent)
300 poly_dr_p pdr = XNEW (struct poly_dr);
303 PDR_BASE_OBJECT_SET (pdr) = dr_base_object_set;
304 PDR_NB_REFS (pdr) = 1;
307 pdr->extent = extent;
308 PDR_TYPE (pdr) = type;
310 PDR_NB_SUBSCRIPTS (pdr) = nb_subscripts;
311 PBB_DRS (pbb).safe_push (pdr);
314 /* Free polyhedral data reference PDR. */
317 free_poly_dr (poly_dr_p pdr)
319 isl_map_free (pdr->accesses);
320 isl_set_free (pdr->extent);
324 /* Create a new polyhedral black box. */
327 new_poly_bb (scop_p scop, void *black_box)
329 poly_bb_p pbb = XNEW (struct poly_bb);
332 pbb->schedule = NULL;
333 pbb->transformed = NULL;
335 pbb->map_sepclass = NULL;
336 PBB_SCOP (pbb) = scop;
337 pbb_set_black_box (pbb, black_box);
338 PBB_TRANSFORMED (pbb) = NULL;
339 PBB_SAVED (pbb) = NULL;
340 PBB_ORIGINAL (pbb) = NULL;
341 PBB_DRS (pbb).create (3);
342 PBB_IS_REDUCTION (pbb) = false;
343 GBB_PBB ((gimple_bb_p) black_box) = pbb;
348 /* Free polyhedral black box. */
351 free_poly_bb (poly_bb_p pbb)
356 isl_set_free (pbb->domain);
357 isl_map_free (pbb->schedule);
358 isl_map_free (pbb->transformed);
359 isl_map_free (pbb->saved);
361 if (PBB_DRS (pbb).exists ())
362 FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
365 PBB_DRS (pbb).release ();
370 print_pdr_access_layout (FILE *file, poly_bb_p pbb, poly_dr_p pdr)
374 fprintf (file, "# eq");
376 fprintf (file, " alias");
378 for (i = 0; i < PDR_NB_SUBSCRIPTS (pdr); i++)
379 fprintf (file, " sub%d", (int) i);
381 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
382 fprintf (file, " i%d", (int) i);
384 for (i = 0; i < pbb_nb_params (pbb); i++)
385 fprintf (file, " p%d", (int) i);
387 fprintf (file, " cst\n");
390 /* Prints to FILE the polyhedral data reference PDR, at some VERBOSITY
394 print_pdr (FILE *file, poly_dr_p pdr, int verbosity)
398 fprintf (file, "# pdr_%d (", PDR_ID (pdr));
400 switch (PDR_TYPE (pdr))
403 fprintf (file, "read \n");
407 fprintf (file, "write \n");
411 fprintf (file, "may_write \n");
418 dump_data_reference (file, (data_reference_p) PDR_CDR (pdr));
423 fprintf (file, "# data accesses (\n");
424 print_pdr_access_layout (file, PDR_PBB (pdr), pdr);
427 /* XXX isl dump accesses/subscripts */
430 fprintf (file, "#)\n");
433 fprintf (file, "#)\n");
436 /* Prints to STDERR the polyhedral data reference PDR, at some
440 debug_pdr (poly_dr_p pdr, int verbosity)
442 print_pdr (stderr, pdr, verbosity);
445 /* Creates a new SCOP containing REGION. */
448 new_scop (void *region)
450 scop_p scop = XNEW (struct scop);
452 scop->context = NULL;
453 scop->must_raw = NULL;
454 scop->may_raw = NULL;
455 scop->must_raw_no_source = NULL;
456 scop->may_raw_no_source = NULL;
457 scop->must_war = NULL;
458 scop->may_war = NULL;
459 scop->must_war_no_source = NULL;
460 scop->may_war_no_source = NULL;
461 scop->must_waw = NULL;
462 scop->may_waw = NULL;
463 scop->must_waw_no_source = NULL;
464 scop->may_waw_no_source = NULL;
465 scop_set_region (scop, region);
466 SCOP_BBS (scop).create (3);
467 SCOP_ORIGINAL_SCHEDULE (scop) = NULL;
468 SCOP_TRANSFORMED_SCHEDULE (scop) = NULL;
469 SCOP_SAVED_SCHEDULE (scop) = NULL;
470 POLY_SCOP_P (scop) = false;
478 free_scop (scop_p scop)
483 FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
486 SCOP_BBS (scop).release ();
488 isl_set_free (scop->context);
489 isl_union_map_free (scop->must_raw);
490 isl_union_map_free (scop->may_raw);
491 isl_union_map_free (scop->must_raw_no_source);
492 isl_union_map_free (scop->may_raw_no_source);
493 isl_union_map_free (scop->must_war);
494 isl_union_map_free (scop->may_war);
495 isl_union_map_free (scop->must_war_no_source);
496 isl_union_map_free (scop->may_war_no_source);
497 isl_union_map_free (scop->must_waw);
498 isl_union_map_free (scop->may_waw);
499 isl_union_map_free (scop->must_waw_no_source);
500 isl_union_map_free (scop->may_waw_no_source);
501 free_lst (SCOP_ORIGINAL_SCHEDULE (scop));
502 free_lst (SCOP_TRANSFORMED_SCHEDULE (scop));
503 free_lst (SCOP_SAVED_SCHEDULE (scop));
507 /* Print to FILE the domain of PBB in OpenScop format, at some VERBOSITY
511 openscop_print_pbb_domain (FILE *file, poly_bb_p pbb, int verbosity)
514 gimple_bb_p gbb = PBB_BLACK_BOX (pbb);
521 fprintf (file, "\n# Iteration domain of bb_%d (\n", GBB_BB (gbb)->index);
522 fprintf (file, "#eq");
524 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
525 fprintf (file, " i%d", (int) i);
527 for (i = 0; i < pbb_nb_params (pbb); i++)
528 fprintf (file, " p%d", (int) i);
530 fprintf (file, " cst\n");
533 fprintf (file, "XXX isl\n");
536 fprintf (file, "#)\n");
539 /* Print to FILE the domain of PBB, at some VERBOSITY level. */
542 print_pbb_domain (FILE *file, poly_bb_p pbb, int verbosity ATTRIBUTE_UNUSED)
544 print_isl_set (file, pbb->domain);
547 /* Dump the cases of a graphite basic block GBB on FILE. */
550 dump_gbb_cases (FILE *file, gimple_bb_p gbb)
559 cases = GBB_CONDITION_CASES (gbb);
560 if (cases.is_empty ())
563 fprintf (file, "# cases bb_%d (\n", GBB_BB (gbb)->index);
565 FOR_EACH_VEC_ELT (cases, i, stmt)
567 fprintf (file, "# ");
568 print_gimple_stmt (file, stmt, 0, 0);
571 fprintf (file, "#)\n");
574 /* Dump conditions of a graphite basic block GBB on FILE. */
577 dump_gbb_conditions (FILE *file, gimple_bb_p gbb)
581 vec<gimple> conditions;
586 conditions = GBB_CONDITIONS (gbb);
587 if (conditions.is_empty ())
590 fprintf (file, "# conditions bb_%d (\n", GBB_BB (gbb)->index);
592 FOR_EACH_VEC_ELT (conditions, i, stmt)
594 fprintf (file, "# ");
595 print_gimple_stmt (file, stmt, 0, 0);
598 fprintf (file, "#)\n");
601 /* Print to FILE all the data references of PBB, at some VERBOSITY
605 print_pdrs (FILE *file, poly_bb_p pbb, int verbosity)
612 if (PBB_DRS (pbb).length () == 0)
615 fprintf (file, "# Access informations are not provided\n");\
616 fprintf (file, "0\n");
621 fprintf (file, "# Data references (\n");
624 fprintf (file, "# Access informations are provided\n");
625 fprintf (file, "1\n");
627 FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
628 if (PDR_TYPE (pdr) == PDR_READ)
634 fprintf (file, "# Read data references (\n");
637 fprintf (file, "# Read access informations\n");
638 fprintf (file, "%d\n", nb_reads);
640 FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
641 if (PDR_TYPE (pdr) == PDR_READ)
642 print_pdr (file, pdr, verbosity);
645 fprintf (file, "#)\n");
648 fprintf (file, "# Write data references (\n");
651 fprintf (file, "# Write access informations\n");
652 fprintf (file, "%d\n", nb_writes);
654 FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
655 if (PDR_TYPE (pdr) != PDR_READ)
656 print_pdr (file, pdr, verbosity);
659 fprintf (file, "#)\n");
662 fprintf (file, "#)\n");
665 /* Print to STDERR all the data references of PBB. */
668 debug_pdrs (poly_bb_p pbb, int verbosity)
670 print_pdrs (stderr, pbb, verbosity);
673 /* Print to FILE the body of PBB, at some VERBOSITY level.
674 If statement_body_provided is false statement body is not printed. */
677 print_pbb_body (FILE *file, poly_bb_p pbb, int verbosity,
678 bool statement_body_provided)
681 fprintf (file, "# Body (\n");
683 if (!statement_body_provided)
686 fprintf (file, "# Statement body is not provided\n");
688 fprintf (file, "0\n");
691 fprintf (file, "#)\n");
696 fprintf (file, "# Statement body is provided\n");
697 fprintf (file, "1\n");
700 fprintf (file, "# Original iterator names\n# Iterator names are not provided yet.\n");
703 fprintf (file, "# Statement body\n");
705 fprintf (file, "{\n");
706 dump_bb (file, pbb_bb (pbb), 0, 0);
707 fprintf (file, "}\n");
710 fprintf (file, "#)\n");
713 /* Print to FILE the domain and scattering function of PBB, at some
717 print_pbb (FILE *file, poly_bb_p pbb, int verbosity)
721 fprintf (file, "# pbb_%d (\n", pbb_index (pbb));
722 dump_gbb_conditions (file, PBB_BLACK_BOX (pbb));
723 dump_gbb_cases (file, PBB_BLACK_BOX (pbb));
726 openscop_print_pbb_domain (file, pbb, verbosity);
727 print_scattering_function (file, pbb, verbosity);
728 print_pdrs (file, pbb, verbosity);
729 print_pbb_body (file, pbb, verbosity, false);
732 fprintf (file, "#)\n");
735 /* Print to FILE the parameters of SCOP, at some VERBOSITY level. */
738 print_scop_params (FILE *file, scop_p scop, int verbosity)
744 fprintf (file, "# parameters (\n");
746 if (SESE_PARAMS (SCOP_REGION (scop)).length ())
749 fprintf (file, "# Parameter names are provided\n");
751 fprintf (file, "1\n");
754 fprintf (file, "# Parameter names\n");
759 fprintf (file, "# Parameter names are not provided\n");
760 fprintf (file, "0\n");
763 FOR_EACH_VEC_ELT (SESE_PARAMS (SCOP_REGION (scop)), i, t)
765 print_generic_expr (file, t, 0);
769 fprintf (file, "\n");
772 fprintf (file, "#)\n");
775 /* Print to FILE the context of SCoP in OpenScop format, at some VERBOSITY
779 openscop_print_scop_context (FILE *file, scop_p scop, int verbosity)
785 fprintf (file, "# Context (\n");
786 fprintf (file, "#eq");
788 for (i = 0; i < scop_nb_params (scop); i++)
789 fprintf (file, " p%d", (int) i);
791 fprintf (file, " cst\n");
795 /* XXX isl print context */
796 fprintf (file, "XXX isl\n");
798 fprintf (file, "0 %d 0 0 0 %d\n", (int) scop_nb_params (scop) + 2,
799 (int) scop_nb_params (scop));
802 fprintf (file, "# )\n");
805 /* Print to FILE the context of SCoP, at some VERBOSITY level. */
808 print_scop_context (FILE *file, scop_p scop, int verbosity)
814 fprintf (file, "# Context (\n");
815 fprintf (file, "#eq");
817 for (i = 0; i < scop_nb_params (scop); i++)
818 fprintf (file, " p%d", (int) i);
820 fprintf (file, " cst\n");
824 print_isl_set (file, scop->context);
826 fprintf (file, "no isl context %d\n", (int) scop_nb_params (scop) + 2);
829 fprintf (file, "# )\n");
832 /* Print to FILE the SCOP, at some VERBOSITY level. */
835 print_scop (FILE *file, scop_p scop, int verbosity)
840 fprintf (file, "SCoP 1\n#(\n");
841 fprintf (file, "# Language\nGimple\n");
842 openscop_print_scop_context (file, scop, verbosity);
843 print_scop_params (file, scop, verbosity);
846 fprintf (file, "# Number of statements\n");
848 fprintf (file, "%d\n", SCOP_BBS (scop).length ());
850 FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
851 print_pbb (file, pbb, verbosity);
855 fprintf (file, "# original_lst (\n");
856 print_lst (file, SCOP_ORIGINAL_SCHEDULE (scop), 0);
857 fprintf (file, "\n#)\n");
859 fprintf (file, "# transformed_lst (\n");
860 print_lst (file, SCOP_TRANSFORMED_SCHEDULE (scop), 0);
861 fprintf (file, "\n#)\n");
864 fprintf (file, "#)\n");
867 /* Print to STDERR the domain of PBB, at some VERBOSITY level. */
870 debug_pbb_domain (poly_bb_p pbb, int verbosity)
872 print_pbb_domain (stderr, pbb, verbosity);
875 /* Print to FILE the domain and scattering function of PBB, at some
879 debug_pbb (poly_bb_p pbb, int verbosity)
881 print_pbb (stderr, pbb, verbosity);
884 /* Print to STDERR the context of SCOP, at some VERBOSITY level. */
887 debug_scop_context (scop_p scop, int verbosity)
889 print_scop_context (stderr, scop, verbosity);
892 /* Print to STDERR the SCOP, at some VERBOSITY level. */
895 debug_scop (scop_p scop, int verbosity)
897 print_scop (stderr, scop, verbosity);
900 /* Print to STDERR the parameters of SCOP, at some VERBOSITY
904 debug_scop_params (scop_p scop, int verbosity)
906 print_scop_params (stderr, scop, verbosity);
909 extern isl_ctx *the_isl_ctx;
911 print_isl_set (FILE *f, isl_set *set)
913 isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
914 p = isl_printer_print_set (p, set);
915 isl_printer_free (p);
919 debug_isl_set (isl_set *set)
921 print_isl_set (stderr, set);
925 print_isl_map (FILE *f, isl_map *map)
927 isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
928 p = isl_printer_print_map (p, map);
929 isl_printer_free (p);
933 debug_isl_map (isl_map *map)
935 print_isl_map (stderr, map);
939 print_isl_aff (FILE *f, isl_aff *aff)
941 isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
942 p = isl_printer_print_aff (p, aff);
943 isl_printer_free (p);
947 debug_isl_aff (isl_aff *aff)
949 print_isl_aff (stderr, aff);
953 print_isl_constraint (FILE *f, isl_constraint *c)
955 isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
956 p = isl_printer_print_constraint (p, c);
957 isl_printer_free (p);
961 debug_isl_constraint (isl_constraint *c)
963 print_isl_constraint (stderr, c);
966 /* Returns the number of iterations RES of the loop around PBB at
967 time(scattering) dimension TIME_DEPTH. */
970 pbb_number_of_iterations_at_time (poly_bb_p pbb,
971 graphite_dim_t time_depth,
974 isl_set *transdomain;
977 isl_val *isllb, *islub;
979 /* Map the iteration domain through the current scatter, and work
980 on the resulting set. */
981 transdomain = isl_set_apply (isl_set_copy (pbb->domain),
982 isl_map_copy (pbb->transformed));
984 /* Select the time_depth' dimension via an affine expression. */
985 dc = isl_set_get_space (transdomain);
986 aff = isl_aff_zero_on_domain (isl_local_space_from_space (dc));
987 aff = isl_aff_set_coefficient_si (aff, isl_dim_in, time_depth, 1);
989 /* And find the min/max for that function. */
990 /* XXX isl check results? */
991 isllb = isl_set_min_val (transdomain, aff);
992 islub = isl_set_max_val (transdomain, aff);
994 islub = isl_val_sub (islub, isllb);
995 islub = isl_val_add_ui (islub, 1);
996 isl_val_get_num_gmp (islub, res);
998 isl_val_free (islub);
1000 isl_set_free (transdomain);
1003 /* Translates LOOP to LST. */
1006 loop_to_lst (loop_p loop, vec<poly_bb_p> bbs, int *i)
1012 for (; bbs.iterate (*i, &pbb); (*i)++)
1015 basic_block bb = GBB_BB (PBB_BLACK_BOX (pbb));
1017 if (bb->loop_father == loop)
1018 stmt = new_lst_stmt (pbb);
1019 else if (flow_bb_inside_loop_p (loop, bb))
1021 loop_p next = loop->inner;
1023 while (next && !flow_bb_inside_loop_p (next, bb))
1026 stmt = loop_to_lst (next, bbs, i);
1031 return new_lst_loop (seq);
1034 seq.safe_push (stmt);
1037 return new_lst_loop (seq);
1040 /* Reads the original scattering of the SCOP and returns an LST
1044 scop_to_lst (scop_p scop)
1047 int i, n = SCOP_BBS (scop).length ();
1050 sese region = SCOP_REGION (scop);
1052 for (i = 0; i < n; i++)
1054 poly_bb_p pbb = SCOP_BBS (scop)[i];
1055 loop_p loop = outermost_loop_in_sese (region, GBB_BB (PBB_BLACK_BOX (pbb)));
1057 if (loop_in_sese_p (loop, region))
1058 res = loop_to_lst (loop, SCOP_BBS (scop), &i);
1060 res = new_lst_stmt (pbb);
1062 seq.safe_push (res);
1065 res = new_lst_loop (seq);
1066 SCOP_ORIGINAL_SCHEDULE (scop) = res;
1067 SCOP_TRANSFORMED_SCHEDULE (scop) = copy_lst (res);
1070 /* Print to FILE on a new line COLUMN white spaces. */
1073 lst_indent_to (FILE *file, int column)
1078 fprintf (file, "\n#");
1080 for (i = 0; i < column; i++)
1081 fprintf (file, " ");
1084 /* Print LST to FILE with INDENT spaces of indentation. */
1087 print_lst (FILE *file, lst_p lst, int indent)
1092 lst_indent_to (file, indent);
1094 if (LST_LOOP_P (lst))
1099 if (LST_LOOP_FATHER (lst))
1100 fprintf (file, "%d (loop", lst_dewey_number (lst));
1102 fprintf (file, "#(root");
1104 FOR_EACH_VEC_ELT (LST_SEQ (lst), i, l)
1105 print_lst (file, l, indent + 2);
1107 fprintf (file, ")");
1110 fprintf (file, "%d stmt_%d", lst_dewey_number (lst), pbb_index (LST_PBB (lst)));
1113 /* Print LST to STDERR. */
1116 debug_lst (lst_p lst)
1118 print_lst (stderr, lst, 0);
1121 /* Pretty print to FILE the loop statement tree LST in DOT format. */
1124 dot_lst_1 (FILE *file, lst_p lst)
1129 if (LST_LOOP_P (lst))
1134 if (!LST_LOOP_FATHER (lst))
1135 fprintf (file, "L -> L_%d_%d\n",
1137 lst_dewey_number (lst));
1139 fprintf (file, "L_%d_%d -> L_%d_%d\n",
1140 lst_depth (LST_LOOP_FATHER (lst)),
1141 lst_dewey_number (LST_LOOP_FATHER (lst)),
1143 lst_dewey_number (lst));
1145 FOR_EACH_VEC_ELT (LST_SEQ (lst), i, l)
1146 dot_lst_1 (file, l);
1150 fprintf (file, "L_%d_%d -> S_%d\n",
1151 lst_depth (LST_LOOP_FATHER (lst)),
1152 lst_dewey_number (LST_LOOP_FATHER (lst)),
1153 pbb_index (LST_PBB (lst)));
1157 /* Display the LST using dotty. */
1162 /* When debugging, enable the following code. This cannot be used
1163 in production compilers because it calls "system". */
1165 FILE *stream = fopen ("/tmp/lst.dot", "w");
1166 gcc_assert (stream);
1168 fputs ("digraph all {\n", stream);
1169 dot_lst_1 (stream, lst);
1170 fputs ("}\n\n", stream);
1173 system ("dotty /tmp/lst.dot &");
1175 fputs ("digraph all {\n", stderr);
1176 dot_lst_1 (stderr, lst);
1177 fputs ("}\n\n", stderr);
1182 /* Reverse the loop around PBB at level DEPTH. */
1185 reverse_loop_at_level (poly_bb_p pbb, int depth)
1187 unsigned i, depth_dim = psct_dynamic_dim (pbb, depth);
1188 isl_space *d = isl_map_get_space (pbb->transformed);
1189 isl_space *d1 = isl_space_range (d);
1190 unsigned n = isl_space_dim (d1, isl_dim_out);
1191 isl_space *d2 = isl_space_add_dims (d1, isl_dim_in, n);
1192 isl_map *x = isl_map_universe (isl_space_copy (d2));
1193 isl_constraint *c = isl_equality_alloc (isl_local_space_from_space (d2));
1195 for (i = 0; i < n; i++)
1197 x = isl_map_equate (x, isl_dim_in, i, isl_dim_out, i);
1199 c = isl_constraint_set_coefficient_si (c, isl_dim_in, depth_dim, 1);
1200 c = isl_constraint_set_coefficient_si (c, isl_dim_out, depth_dim, 1);
1201 x = isl_map_add_constraint (x, c);
1205 /* Reverse the loop at level DEPTH for all the PBBS. */
1208 reverse_loop_for_pbbs (scop_p scop, vec<poly_bb_p> pbbs, int depth)
1212 isl_space *space = isl_space_from_domain (isl_set_get_space (scop->context));
1213 isl_union_map *res = isl_union_map_empty (space);
1215 for (i = 0; pbbs.iterate (i, &pbb); i++)
1216 res = isl_union_map_add_map (res, reverse_loop_at_level (pbb, depth));