1 /* Graphite polyhedral representation.
2 Copyright (C) 2009, 2010 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/>. */
23 #include "coretypes.h"
29 #include "basic-block.h"
30 #include "diagnostic.h"
31 #include "tree-pretty-print.h"
32 #include "gimple-pretty-print.h"
33 #include "tree-flow.h"
35 #include "tree-dump.h"
38 #include "tree-chrec.h"
39 #include "tree-data-ref.h"
40 #include "tree-scalar-evolution.h"
41 #include "tree-pass.h"
43 #include "value-prof.h"
44 #include "pointer-set.h"
47 #include "graphite-cloog-util.h"
52 #include "graphite-ppl.h"
54 #include "graphite-poly.h"
55 #include "graphite-dependences.h"
57 /* Return the maximal loop depth in SCOP. */
60 scop_max_loop_depth (scop_p scop)
66 FOR_EACH_VEC_ELT (poly_bb_p, SCOP_BBS (scop), i, pbb)
68 int nb_loops = pbb_dim_iter_domain (pbb);
69 if (max_nb_loops < nb_loops)
70 max_nb_loops = nb_loops;
76 /* Extend the scattering matrix of PBB to MAX_SCATTERING scattering
80 extend_scattering (poly_bb_p pbb, int max_scattering)
82 ppl_dimension_type nb_old_dims, nb_new_dims;
84 ppl_Coefficient_t coef;
87 nb_added_dims = max_scattering - pbb_nb_scattering_transform (pbb);
90 ppl_new_Coefficient (&coef);
91 ppl_assign_Coefficient_from_mpz_t (coef, one);
93 gcc_assert (nb_added_dims >= 0);
95 nb_old_dims = pbb_nb_scattering_transform (pbb) + pbb_dim_iter_domain (pbb)
96 + scop_nb_params (PBB_SCOP (pbb));
97 nb_new_dims = nb_old_dims + nb_added_dims;
99 ppl_insert_dimensions (PBB_TRANSFORMED_SCATTERING (pbb),
100 pbb_nb_scattering_transform (pbb), nb_added_dims);
101 PBB_NB_SCATTERING_TRANSFORM (pbb) += nb_added_dims;
103 /* Add identity matrix for the added dimensions. */
104 for (i = max_scattering - nb_added_dims; i < max_scattering; i++)
106 ppl_Constraint_t cstr;
107 ppl_Linear_Expression_t expr;
109 ppl_new_Linear_Expression_with_dimension (&expr, nb_new_dims);
110 ppl_Linear_Expression_add_to_coefficient (expr, i, coef);
111 ppl_new_Constraint (&cstr, expr, PPL_CONSTRAINT_TYPE_EQUAL);
112 ppl_Polyhedron_add_constraint (PBB_TRANSFORMED_SCATTERING (pbb), cstr);
113 ppl_delete_Constraint (cstr);
114 ppl_delete_Linear_Expression (expr);
117 ppl_delete_Coefficient (coef);
121 /* All scattering matrices in SCOP will have the same number of scattering
125 unify_scattering_dimensions (scop_p scop)
129 graphite_dim_t max_scattering = 0;
131 FOR_EACH_VEC_ELT (poly_bb_p, SCOP_BBS (scop), i, pbb)
132 max_scattering = MAX (pbb_nb_scattering_transform (pbb), max_scattering);
134 FOR_EACH_VEC_ELT (poly_bb_p, SCOP_BBS (scop), i, pbb)
135 extend_scattering (pbb, max_scattering);
137 return max_scattering;
140 /* Print to FILE the pdr PH in OpenScop format. NB_SUBSCRIPTS is the number
141 of subscripts in PH, ALIAS_SET_DIM is the dimension of the alias set and
142 NB_PARAMS is the number of parameters in PH. */
145 openscop_print_pdr_polyhedron (FILE *file, ppl_const_Polyhedron_t ph,
146 int nb_subscripts, int alias_set_dimension,
149 int input, locals, output;
150 ppl_dimension_type alias_set_dim = (ppl_dimension_type) alias_set_dimension;
151 ppl_dimension_type sub_dim_last = alias_set_dim + nb_subscripts;
152 ppl_dimension_type *map, i, ph_space_dim = sub_dim_last + 1;
153 ppl_Polyhedron_t pph;
155 ppl_new_C_Polyhedron_from_C_Polyhedron (&pph, ph);
157 map = (ppl_dimension_type *) XNEWVEC (ppl_dimension_type, ph_space_dim);
159 for (i = 0; i < alias_set_dim - 1; i++)
160 map[i] = nb_subscripts + 1 + i;
162 for (i = alias_set_dim - 1; i < sub_dim_last; i++)
163 map[i] = i - alias_set_dim + 1;
165 ppl_Polyhedron_map_space_dimensions (pph, map, ph_space_dim - 1);
168 input = alias_set_dim - nb_params - 1;
170 /* According to OpenScop specification, the alias set column is a part of
171 the output columns. */
172 output = nb_subscripts + 1;
174 openscop_print_polyhedron_matrix (file, pph, output, input, locals, nb_params);
177 /* Print to FILE the powerset PDR. NB_SUBSCRIPTS is the number of subscripts
178 in PDR, ALIAS_SET_DIM is the dimension of the alias set in PDR and
179 NB_PARAMS is the number of parameters in PDR. */
182 openscop_print_pdr_powerset (FILE *file,
183 ppl_Pointset_Powerset_C_Polyhedron_t ps,
189 ppl_Pointset_Powerset_C_Polyhedron_iterator_t it, end;
191 ppl_new_Pointset_Powerset_C_Polyhedron_iterator (&it);
192 ppl_new_Pointset_Powerset_C_Polyhedron_iterator (&end);
194 ppl_Pointset_Powerset_C_Polyhedron_size (ps, &nb_disjuncts);
195 fprintf (file, "%d\n", (int) nb_disjuncts);
197 for (ppl_Pointset_Powerset_C_Polyhedron_iterator_begin (ps, it),
198 ppl_Pointset_Powerset_C_Polyhedron_iterator_end (ps, end);
199 !ppl_Pointset_Powerset_C_Polyhedron_iterator_equal_test (it, end);
200 ppl_Pointset_Powerset_C_Polyhedron_iterator_increment (it))
202 ppl_const_Polyhedron_t ph;
204 ppl_Pointset_Powerset_C_Polyhedron_iterator_dereference (it, &ph);
205 openscop_print_pdr_polyhedron (file, ph, nb_subscripts, alias_set_dim,
209 ppl_delete_Pointset_Powerset_C_Polyhedron_iterator (it);
210 ppl_delete_Pointset_Powerset_C_Polyhedron_iterator (end);
213 /* Print to FILE the powerset PS in its OpenScop matrix form. */
216 openscop_print_powerset_matrix (FILE *file,
217 ppl_Pointset_Powerset_C_Polyhedron_t ps,
218 int output, int input, int locals,
222 ppl_Pointset_Powerset_C_Polyhedron_iterator_t it, end;
224 ppl_new_Pointset_Powerset_C_Polyhedron_iterator (&it);
225 ppl_new_Pointset_Powerset_C_Polyhedron_iterator (&end);
227 ppl_Pointset_Powerset_C_Polyhedron_size (ps, &nb_disjuncts);
228 fprintf (file, "%d\n", (int) nb_disjuncts);
230 for (ppl_Pointset_Powerset_C_Polyhedron_iterator_begin (ps, it),
231 ppl_Pointset_Powerset_C_Polyhedron_iterator_end (ps, end);
232 !ppl_Pointset_Powerset_C_Polyhedron_iterator_equal_test (it, end);
233 ppl_Pointset_Powerset_C_Polyhedron_iterator_increment (it))
235 ppl_const_Polyhedron_t ph;
237 ppl_Pointset_Powerset_C_Polyhedron_iterator_dereference (it, &ph);
238 openscop_print_polyhedron_matrix (file, ph, output, input, locals,
242 ppl_delete_Pointset_Powerset_C_Polyhedron_iterator (it);
243 ppl_delete_Pointset_Powerset_C_Polyhedron_iterator (end);
246 /* Prints to FILE the scattering function of PBB in OpenScop format, at some
250 openscop_print_scattering_function_1 (FILE *file, poly_bb_p pbb, int verbosity)
253 ppl_const_Polyhedron_t ph;
257 fprintf (file, "# scattering bb_%d (\n", pbb_index (pbb));
258 fprintf (file, "# eq");
260 for (i = 0; i < pbb_nb_scattering_transform (pbb); i++)
261 fprintf (file, " s%d", (int) i);
263 for (i = 0; i < pbb_nb_local_vars (pbb); i++)
264 fprintf (file, " lv%d", (int) i);
266 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
267 fprintf (file, " i%d", (int) i);
269 for (i = 0; i < pbb_nb_params (pbb); i++)
270 fprintf (file, " p%d", (int) i);
272 fprintf (file, " cst\n");
275 /* Number of disjunct components. Remove this when
276 PBB_TRANSFORMED_SCATTERING will be a pointset_powerset. */
277 fprintf (file, "1\n");
279 ph = PBB_TRANSFORMED_SCATTERING (pbb)
280 ? PBB_TRANSFORMED_SCATTERING (pbb)
281 : PBB_ORIGINAL_SCATTERING (pbb);
283 openscop_print_polyhedron_matrix (file, ph,
284 pbb_nb_scattering_transform (pbb),
285 pbb_dim_iter_domain (pbb),
286 pbb_nb_local_vars (pbb),
287 pbb_nb_params (pbb));
290 fprintf (file, "#)\n");
293 /* Prints to FILE the scattering function of PBB, at some VERBOSITY
297 print_scattering_function_1 (FILE *file, poly_bb_p pbb, int verbosity)
303 fprintf (file, "# scattering bb_%d (\n", pbb_index (pbb));
304 fprintf (file, "# eq");
306 for (i = 0; i < pbb_nb_scattering_transform (pbb); i++)
307 fprintf (file, " s%d", (int) i);
309 for (i = 0; i < pbb_nb_local_vars (pbb); i++)
310 fprintf (file, " lv%d", (int) i);
312 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
313 fprintf (file, " i%d", (int) i);
315 for (i = 0; i < pbb_nb_params (pbb); i++)
316 fprintf (file, " p%d", (int) i);
318 fprintf (file, " cst\n");
321 /* Number of disjunct components. Remove this when
322 PBB_TRANSFORMED_SCATTERING will be a pointset_powerset. */
323 fprintf (file, "1\n");
324 ppl_print_polyhedron_matrix (file, PBB_TRANSFORMED_SCATTERING (pbb)
325 ? PBB_TRANSFORMED_SCATTERING (pbb)
326 : PBB_ORIGINAL_SCATTERING (pbb));
329 fprintf (file, "#)\n");
332 /* Prints to FILE the scattering function of PBB, at some VERBOSITY
336 print_scattering_function (FILE *file, poly_bb_p pbb, int verbosity)
338 if (!PBB_TRANSFORMED (pbb))
341 if (PBB_TRANSFORMED_SCATTERING (pbb)
342 || PBB_ORIGINAL_SCATTERING (pbb))
345 fprintf (file, "# Scattering function is provided\n");
347 fprintf (file, "1\n");
352 fprintf (file, "# Scattering function is not provided\n");
354 fprintf (file, "0\n");
358 openscop_print_scattering_function_1 (file, pbb, verbosity);
361 fprintf (file, "# Scattering names are not provided\n");
363 fprintf (file, "0\n");
367 /* Prints to FILE the iteration domain of PBB, at some VERBOSITY
371 print_iteration_domain (FILE *file, poly_bb_p pbb, int verbosity)
373 print_pbb_domain (file, pbb, verbosity);
376 /* Prints to FILE the scattering functions of every PBB of SCOP. */
379 print_scattering_functions (FILE *file, scop_p scop, int verbosity)
384 FOR_EACH_VEC_ELT (poly_bb_p, SCOP_BBS (scop), i, pbb)
385 print_scattering_function (file, pbb, verbosity);
388 /* Prints to FILE the iteration domains of every PBB of SCOP, at some
392 print_iteration_domains (FILE *file, scop_p scop, int verbosity)
397 FOR_EACH_VEC_ELT (poly_bb_p, SCOP_BBS (scop), i, pbb)
398 print_iteration_domain (file, pbb, verbosity);
401 /* Prints to STDERR the scattering function of PBB, at some VERBOSITY
405 debug_scattering_function (poly_bb_p pbb, int verbosity)
407 print_scattering_function (stderr, pbb, verbosity);
410 /* Prints to STDERR the iteration domain of PBB, at some VERBOSITY
414 debug_iteration_domain (poly_bb_p pbb, int verbosity)
416 print_iteration_domain (stderr, pbb, verbosity);
419 /* Prints to STDERR the scattering functions of every PBB of SCOP, at
420 some VERBOSITY level. */
423 debug_scattering_functions (scop_p scop, int verbosity)
425 print_scattering_functions (stderr, scop, verbosity);
428 /* Prints to STDERR the iteration domains of every PBB of SCOP, at
429 some VERBOSITY level. */
432 debug_iteration_domains (scop_p scop, int verbosity)
434 print_iteration_domains (stderr, scop, verbosity);
438 /* Apply graphite transformations to all the basic blocks of SCOP. */
441 apply_poly_transforms (scop_p scop)
443 bool transform_done = false;
445 /* Generate code even if we did not apply any real transformation.
446 This also allows to check the performance for the identity
447 transformation: GIMPLE -> GRAPHITE -> GIMPLE
448 Keep in mind that CLooG optimizes in control, so the loop structure
449 may change, even if we only use -fgraphite-identity. */
450 if (flag_graphite_identity)
451 transform_done = true;
453 if (flag_loop_parallelize_all)
454 transform_done = true;
457 transform_done |= scop_do_block (scop);
460 if (flag_loop_strip_mine)
461 transform_done |= scop_do_strip_mine (scop);
463 if (flag_loop_interchange)
464 transform_done |= scop_do_interchange (scop);
467 return transform_done;
470 /* Returns true when it PDR1 is a duplicate of PDR2: same PBB, and
471 their ACCESSES, TYPE, and NB_SUBSCRIPTS are the same. */
474 can_collapse_pdrs (poly_dr_p pdr1, poly_dr_p pdr2)
477 ppl_Pointset_Powerset_C_Polyhedron_t af1, af2, diff;
479 if (PDR_PBB (pdr1) != PDR_PBB (pdr2)
480 || PDR_NB_SUBSCRIPTS (pdr1) != PDR_NB_SUBSCRIPTS (pdr2)
481 || PDR_TYPE (pdr1) != PDR_TYPE (pdr2))
484 af1 = PDR_ACCESSES (pdr1);
485 af2 = PDR_ACCESSES (pdr2);
486 ppl_new_Pointset_Powerset_C_Polyhedron_from_Pointset_Powerset_C_Polyhedron
488 ppl_Pointset_Powerset_C_Polyhedron_difference_assign (diff, af2);
490 res = ppl_Pointset_Powerset_C_Polyhedron_is_empty (diff);
491 ppl_delete_Pointset_Powerset_C_Polyhedron (diff);
495 /* Removes duplicated data references in PBB. */
498 pbb_remove_duplicate_pdrs (poly_bb_p pbb)
501 poly_dr_p pdr1, pdr2;
502 unsigned n = VEC_length (poly_dr_p, PBB_DRS (pbb));
503 VEC (poly_dr_p, heap) *collapsed = VEC_alloc (poly_dr_p, heap, n);
505 FOR_EACH_VEC_ELT (poly_dr_p, PBB_DRS (pbb), i, pdr1)
506 FOR_EACH_VEC_ELT (poly_dr_p, collapsed, j, pdr2)
507 if (!can_collapse_pdrs (pdr1, pdr2))
508 VEC_quick_push (poly_dr_p, collapsed, pdr1);
510 VEC_free (poly_dr_p, heap, collapsed);
511 PBB_PDR_DUPLICATES_REMOVED (pbb) = true;
514 /* Create a new polyhedral data reference and add it to PBB. It is
515 defined by its ACCESSES, its TYPE, and the number of subscripts
519 new_poly_dr (poly_bb_p pbb, int dr_base_object_set,
520 ppl_Pointset_Powerset_C_Polyhedron_t accesses,
521 enum poly_dr_type type, void *cdr, graphite_dim_t nb_subscripts)
524 poly_dr_p pdr = XNEW (struct poly_dr);
527 PDR_BASE_OBJECT_SET (pdr) = dr_base_object_set;
528 PDR_NB_REFS (pdr) = 1;
530 PDR_ACCESSES (pdr) = accesses;
531 PDR_TYPE (pdr) = type;
533 PDR_NB_SUBSCRIPTS (pdr) = nb_subscripts;
534 VEC_safe_push (poly_dr_p, heap, PBB_DRS (pbb), pdr);
537 /* Free polyhedral data reference PDR. */
540 free_poly_dr (poly_dr_p pdr)
542 ppl_delete_Pointset_Powerset_C_Polyhedron (PDR_ACCESSES (pdr));
546 /* Create a new polyhedral black box. */
549 new_poly_bb (scop_p scop, void *black_box, bool reduction)
551 poly_bb_p pbb = XNEW (struct poly_bb);
553 PBB_DOMAIN (pbb) = NULL;
554 PBB_SCOP (pbb) = scop;
555 pbb_set_black_box (pbb, black_box);
556 PBB_TRANSFORMED (pbb) = NULL;
557 PBB_SAVED (pbb) = NULL;
558 PBB_ORIGINAL (pbb) = NULL;
559 PBB_DRS (pbb) = VEC_alloc (poly_dr_p, heap, 3);
560 PBB_IS_REDUCTION (pbb) = reduction;
561 PBB_PDR_DUPLICATES_REMOVED (pbb) = false;
562 VEC_safe_push (poly_bb_p, heap, SCOP_BBS (scop), pbb);
565 /* Free polyhedral black box. */
568 free_poly_bb (poly_bb_p pbb)
573 ppl_delete_Pointset_Powerset_C_Polyhedron (PBB_DOMAIN (pbb));
575 if (PBB_TRANSFORMED (pbb))
576 poly_scattering_free (PBB_TRANSFORMED (pbb));
579 poly_scattering_free (PBB_SAVED (pbb));
581 if (PBB_ORIGINAL (pbb))
582 poly_scattering_free (PBB_ORIGINAL (pbb));
585 FOR_EACH_VEC_ELT (poly_dr_p, PBB_DRS (pbb), i, pdr)
588 VEC_free (poly_dr_p, heap, PBB_DRS (pbb));
593 print_pdr_access_layout (FILE *file, poly_bb_p pbb, poly_dr_p pdr)
597 fprintf (file, "# eq");
599 fprintf (file, " alias");
601 for (i = 0; i < PDR_NB_SUBSCRIPTS (pdr); i++)
602 fprintf (file, " sub%d", (int) i);
604 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
605 fprintf (file, " i%d", (int) i);
607 for (i = 0; i < pbb_nb_params (pbb); i++)
608 fprintf (file, " p%d", (int) i);
610 fprintf (file, " cst\n");
613 /* Prints to FILE the polyhedral data reference PDR, at some VERBOSITY
617 print_pdr (FILE *file, poly_dr_p pdr, int verbosity)
623 fprintf (file, "# pdr_%d (", PDR_ID (pdr));
625 switch (PDR_TYPE (pdr))
628 fprintf (file, "read \n");
632 fprintf (file, "write \n");
636 fprintf (file, "may_write \n");
643 dump_data_reference (file, (data_reference_p) PDR_CDR (pdr));
648 fprintf (file, "# data accesses (\n");
649 print_pdr_access_layout (file, PDR_PBB (pdr), pdr);
652 alias_set_dim = pdr_alias_set_dim (pdr) + 1;
654 openscop_print_pdr_powerset (file,
656 PDR_NB_SUBSCRIPTS (pdr),
658 pbb_nb_params (PDR_PBB (pdr)));
661 fprintf (file, "#)\n");
664 fprintf (file, "#)\n");
667 /* Prints to STDERR the polyhedral data reference PDR, at some
671 debug_pdr (poly_dr_p pdr, int verbosity)
673 print_pdr (stderr, pdr, verbosity);
676 /* Creates a new SCOP containing REGION. */
679 new_scop (void *region)
681 scop_p scop = XNEW (struct scop);
683 SCOP_CONTEXT (scop) = NULL;
684 scop_set_region (scop, region);
685 SCOP_BBS (scop) = VEC_alloc (poly_bb_p, heap, 3);
686 SCOP_ORIGINAL_PDDRS (scop) = htab_create (10, hash_poly_ddr_p,
687 eq_poly_ddr_p, free_poly_ddr);
688 SCOP_ORIGINAL_SCHEDULE (scop) = NULL;
689 SCOP_TRANSFORMED_SCHEDULE (scop) = NULL;
690 SCOP_SAVED_SCHEDULE (scop) = NULL;
691 POLY_SCOP_P (scop) = false;
699 free_scop (scop_p scop)
704 FOR_EACH_VEC_ELT (poly_bb_p, SCOP_BBS (scop), i, pbb)
707 VEC_free (poly_bb_p, heap, SCOP_BBS (scop));
709 if (SCOP_CONTEXT (scop))
710 ppl_delete_Pointset_Powerset_C_Polyhedron (SCOP_CONTEXT (scop));
712 htab_delete (SCOP_ORIGINAL_PDDRS (scop));
713 free_lst (SCOP_ORIGINAL_SCHEDULE (scop));
714 free_lst (SCOP_TRANSFORMED_SCHEDULE (scop));
715 free_lst (SCOP_SAVED_SCHEDULE (scop));
719 /* Print to FILE the domain of PBB in OpenScop format, at some VERBOSITY
723 openscop_print_pbb_domain (FILE *file, poly_bb_p pbb, int verbosity)
726 gimple_bb_p gbb = PBB_BLACK_BOX (pbb);
728 if (!PBB_DOMAIN (pbb))
733 fprintf (file, "\n# Iteration domain of bb_%d (\n", GBB_BB (gbb)->index);
734 fprintf (file, "# eq");
736 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
737 fprintf (file, " i%d", (int) i);
739 for (i = 0; i < pbb_nb_params (pbb); i++)
740 fprintf (file, " p%d", (int) i);
742 fprintf (file, " cst\n");
745 if (PBB_DOMAIN (pbb))
746 openscop_print_powerset_matrix (file, PBB_DOMAIN (pbb),
747 pbb_dim_iter_domain (pbb),
750 pbb_nb_params (pbb));
752 fprintf (file, "0\n");
755 fprintf (file, "#)\n");
758 /* Print to FILE the domain of PBB, at some VERBOSITY level. */
761 print_pbb_domain (FILE *file, poly_bb_p pbb, int verbosity)
764 gimple_bb_p gbb = PBB_BLACK_BOX (pbb);
766 if (!PBB_DOMAIN (pbb))
771 fprintf (file, "# Iteration domain of bb_%d (\n", GBB_BB (gbb)->index);
772 fprintf (file, "# eq");
774 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
775 fprintf (file, " i%d", (int) i);
777 for (i = 0; i < pbb_nb_params (pbb); i++)
778 fprintf (file, " p%d", (int) i);
780 fprintf (file, " cst\n");
783 if (PBB_DOMAIN (pbb))
784 ppl_print_powerset_matrix (file, PBB_DOMAIN (pbb));
786 fprintf (file, "0\n");
789 fprintf (file, "#)\n");
792 /* Dump the cases of a graphite basic block GBB on FILE. */
795 dump_gbb_cases (FILE *file, gimple_bb_p gbb)
799 VEC (gimple, heap) *cases;
804 cases = GBB_CONDITION_CASES (gbb);
805 if (VEC_empty (gimple, cases))
808 fprintf (file, "# cases bb_%d (\n", GBB_BB (gbb)->index);
810 FOR_EACH_VEC_ELT (gimple, cases, i, stmt)
812 fprintf (file, "# ");
813 print_gimple_stmt (file, stmt, 0, 0);
816 fprintf (file, "#)\n");
819 /* Dump conditions of a graphite basic block GBB on FILE. */
822 dump_gbb_conditions (FILE *file, gimple_bb_p gbb)
826 VEC (gimple, heap) *conditions;
831 conditions = GBB_CONDITIONS (gbb);
832 if (VEC_empty (gimple, conditions))
835 fprintf (file, "# conditions bb_%d (\n", GBB_BB (gbb)->index);
837 FOR_EACH_VEC_ELT (gimple, conditions, i, stmt)
839 fprintf (file, "# ");
840 print_gimple_stmt (file, stmt, 0, 0);
843 fprintf (file, "#)\n");
846 /* Print to FILE all the data references of PBB, at some VERBOSITY
850 print_pdrs (FILE *file, poly_bb_p pbb, int verbosity)
857 if (VEC_length (poly_dr_p, PBB_DRS (pbb)) == 0)
860 fprintf (file, "# Access informations are not provided\n");\
861 fprintf (file, "0\n");
866 fprintf (file, "# Data references (\n");
869 fprintf (file, "# Access informations are provided\n");
870 fprintf (file, "1\n");
872 FOR_EACH_VEC_ELT (poly_dr_p, PBB_DRS (pbb), i, pdr)
873 if (PDR_TYPE (pdr) == PDR_READ)
879 fprintf (file, "# Read data references (\n");
882 fprintf (file, "# Read access informations\n");
883 fprintf (file, "%d\n", nb_reads);
885 FOR_EACH_VEC_ELT (poly_dr_p, PBB_DRS (pbb), i, pdr)
886 if (PDR_TYPE (pdr) == PDR_READ)
887 print_pdr (file, pdr, verbosity);
890 fprintf (file, "#)\n");
893 fprintf (file, "# Write data references (\n");
896 fprintf (file, "# Write access informations\n");
897 fprintf (file, "%d\n", nb_writes);
899 FOR_EACH_VEC_ELT (poly_dr_p, PBB_DRS (pbb), i, pdr)
900 if (PDR_TYPE (pdr) != PDR_READ)
901 print_pdr (file, pdr, verbosity);
904 fprintf (file, "#)\n");
907 fprintf (file, "#)\n");
910 /* Print to STDERR all the data references of PBB. */
913 debug_pdrs (poly_bb_p pbb, int verbosity)
915 print_pdrs (stderr, pbb, verbosity);
918 /* Print to FILE the body of PBB, at some VERBOSITY level.
919 If statement_body_provided is false statement body is not printed. */
922 print_pbb_body (FILE *file, poly_bb_p pbb, int verbosity,
923 bool statement_body_provided)
926 fprintf (file, "# Body (\n");
928 if (!statement_body_provided)
931 fprintf (file, "# Statement body is not provided\n");
933 fprintf (file, "0\n");
938 fprintf (file, "# Statement body is provided\n");
939 fprintf (file, "1\n");
942 fprintf (file, "# Original iterator names\n# Iterator names are not provided yet.\n");
945 fprintf (file, "# Statement body\n");
947 fprintf (file, "{\n");
948 dump_bb (pbb_bb (pbb), file, 0);
949 fprintf (file, "}\n");
952 fprintf (file, "#)\n");
955 /* Print to FILE the domain and scattering function of PBB, at some
959 print_pbb (FILE *file, poly_bb_p pbb, int verbosity)
963 fprintf (file, "# pbb_%d (\n", pbb_index (pbb));
964 dump_gbb_conditions (file, PBB_BLACK_BOX (pbb));
965 dump_gbb_cases (file, PBB_BLACK_BOX (pbb));
968 openscop_print_pbb_domain (file, pbb, verbosity);
969 print_scattering_function (file, pbb, verbosity);
970 print_pdrs (file, pbb, verbosity);
971 print_pbb_body (file, pbb, verbosity, false);
974 fprintf (file, "#)\n");
977 /* Print to FILE the parameters of SCOP, at some VERBOSITY level. */
980 print_scop_params (FILE *file, scop_p scop, int verbosity)
986 fprintf (file, "# parameters (\n");
988 if (VEC_length (tree, SESE_PARAMS (SCOP_REGION (scop))))
991 fprintf (file, "# Parameter names are provided\n");
993 fprintf (file, "1\n");
996 fprintf (file, "# Parameter names\n");
1001 fprintf (file, "# Parameter names are not provided\n");
1002 fprintf (file, "0\n");
1005 FOR_EACH_VEC_ELT (tree, SESE_PARAMS (SCOP_REGION (scop)), i, t)
1007 print_generic_expr (file, t, 0);
1008 fprintf (file, " ");
1011 fprintf (file, "\n");
1014 fprintf (file, "#)\n");
1017 /* Print to FILE the context of SCoP in OpenScop format, at some VERBOSITY
1021 openscop_print_scop_context (FILE *file, scop_p scop, int verbosity)
1027 fprintf (file, "# Context (\n");
1028 fprintf (file, "# eq");
1030 for (i = 0; i < scop_nb_params (scop); i++)
1031 fprintf (file, " p%d", (int) i);
1033 fprintf (file, " cst\n");
1036 if (SCOP_CONTEXT (scop))
1037 openscop_print_powerset_matrix (file, SCOP_CONTEXT (scop), 0, 0, 0,
1038 scop_nb_params (scop));
1040 fprintf (file, "0 %d 0 0 0 %d\n", (int) scop_nb_params (scop) + 2,
1041 (int) scop_nb_params (scop));
1044 fprintf (file, "# )\n");
1047 /* Print to FILE the context of SCoP, at some VERBOSITY level. */
1050 print_scop_context (FILE *file, scop_p scop, int verbosity)
1056 fprintf (file, "# Context (\n");
1057 fprintf (file, "# eq");
1059 for (i = 0; i < scop_nb_params (scop); i++)
1060 fprintf (file, " p%d", (int) i);
1062 fprintf (file, " cst\n");
1065 if (SCOP_CONTEXT (scop))
1066 ppl_print_powerset_matrix (file, SCOP_CONTEXT (scop));
1068 fprintf (file, "0 %d\n", (int) scop_nb_params (scop) + 2);
1071 fprintf (file, "# )\n");
1074 /* Print to FILE the SCOP header: context, parameters, and statements
1078 print_scop_header (FILE *file, scop_p scop, int verbosity)
1080 fprintf (file, "SCoP 1\n#(\n");
1081 fprintf (file, "# Language\nGimple\n");
1082 openscop_print_scop_context (file, scop, verbosity);
1083 print_scop_params (file, scop, verbosity);
1086 fprintf (file, "# Number of statements\n");
1088 fprintf (file, "%d\n",VEC_length (poly_bb_p, SCOP_BBS (scop)));
1091 /* Print to FILE the SCOP, at some VERBOSITY level. */
1094 print_scop (FILE *file, scop_p scop, int verbosity)
1099 print_scop_header (file, scop, verbosity);
1101 FOR_EACH_VEC_ELT (poly_bb_p, SCOP_BBS (scop), i, pbb)
1102 print_pbb (file, pbb, verbosity);
1106 fprintf (file, "# original_lst (\n");
1107 print_lst (file, SCOP_ORIGINAL_SCHEDULE (scop), 0);
1108 fprintf (file, "\n#)\n");
1110 fprintf (file, "# transformed_lst (\n");
1111 print_lst (file, SCOP_TRANSFORMED_SCHEDULE (scop), 0);
1112 fprintf (file, "\n#)\n");
1115 fprintf (file, "#)\n");
1118 /* Print to FILE the input file that CLooG would expect as input, at
1119 some VERBOSITY level. */
1122 print_cloog (FILE *file, scop_p scop, int verbosity)
1127 fprintf (file, "# SCoP (generated by GCC/Graphite\n");
1129 fprintf (file, "# CLooG output language\n");
1130 fprintf (file, "c\n");
1132 print_scop_context (file, scop, verbosity);
1133 print_scop_params (file, scop, verbosity);
1136 fprintf (file, "# Number of statements\n");
1138 fprintf (file, "%d\n", VEC_length (poly_bb_p, SCOP_BBS (scop)));
1140 FOR_EACH_VEC_ELT (poly_bb_p, SCOP_BBS (scop), i, pbb)
1143 fprintf (file, "# pbb_%d (\n", pbb_index (pbb));
1145 print_pbb_domain (file, pbb, verbosity);
1146 fprintf (file, "0 0 0");
1149 fprintf (file, "# For future CLooG options.\n");
1151 fprintf (file, "\n");
1154 fprintf (file, "#)\n");
1157 fprintf (file, "0");
1159 fprintf (file, "# Don't set the iterator names.\n");
1161 fprintf (file, "\n");
1164 fprintf (file, "# Number of scattering functions\n");
1166 fprintf (file, "%d\n", VEC_length (poly_bb_p, SCOP_BBS (scop)));
1167 unify_scattering_dimensions (scop);
1169 FOR_EACH_VEC_ELT (poly_bb_p, SCOP_BBS (scop), i, pbb)
1171 if (!PBB_TRANSFORMED (pbb)
1172 || !(PBB_TRANSFORMED_SCATTERING (pbb)
1173 || PBB_ORIGINAL_SCATTERING (pbb)))
1177 fprintf (file, "# pbb_%d (\n", pbb_index (pbb));
1179 print_scattering_function_1 (file, pbb, verbosity);
1182 fprintf (file, "#)\n");
1185 fprintf (file, "0");
1187 fprintf (file, "# Don't set the scattering dimension names.\n");
1189 fprintf (file, "\n");
1191 fprintf (file, "#)\n");
1194 /* Print to STDERR the domain of PBB, at some VERBOSITY level. */
1197 debug_pbb_domain (poly_bb_p pbb, int verbosity)
1199 print_pbb_domain (stderr, pbb, verbosity);
1202 /* Print to FILE the domain and scattering function of PBB, at some
1206 debug_pbb (poly_bb_p pbb, int verbosity)
1208 print_pbb (stderr, pbb, verbosity);
1211 /* Print to STDERR the context of SCOP, at some VERBOSITY level. */
1214 debug_scop_context (scop_p scop, int verbosity)
1216 print_scop_context (stderr, scop, verbosity);
1219 /* Print to STDERR the SCOP, at some VERBOSITY level. */
1222 debug_scop (scop_p scop, int verbosity)
1224 print_scop (stderr, scop, verbosity);
1227 /* Print to STDERR the SCOP under CLooG format, at some VERBOSITY
1231 debug_cloog (scop_p scop, int verbosity)
1233 print_cloog (stderr, scop, verbosity);
1236 /* Print to STDERR the parameters of SCOP, at some VERBOSITY
1240 debug_scop_params (scop_p scop, int verbosity)
1242 print_scop_params (stderr, scop, verbosity);
1246 /* The dimension in the transformed scattering polyhedron of PBB
1247 containing the scattering iterator for the loop at depth LOOP_DEPTH. */
1250 psct_scattering_dim_for_loop_depth (poly_bb_p pbb, graphite_dim_t loop_depth)
1252 ppl_const_Constraint_System_t pcs;
1253 ppl_Constraint_System_const_iterator_t cit, cend;
1254 ppl_const_Constraint_t cstr;
1255 ppl_Polyhedron_t ph = PBB_TRANSFORMED_SCATTERING (pbb);
1256 ppl_dimension_type iter = psct_iterator_dim (pbb, loop_depth);
1257 ppl_Linear_Expression_t expr;
1258 ppl_Coefficient_t coef;
1263 ppl_new_Coefficient (&coef);
1264 ppl_Polyhedron_get_constraints (ph, &pcs);
1265 ppl_new_Constraint_System_const_iterator (&cit);
1266 ppl_new_Constraint_System_const_iterator (&cend);
1268 for (ppl_Constraint_System_begin (pcs, cit),
1269 ppl_Constraint_System_end (pcs, cend);
1270 !ppl_Constraint_System_const_iterator_equal_test (cit, cend);
1271 ppl_Constraint_System_const_iterator_increment (cit))
1273 ppl_Constraint_System_const_iterator_dereference (cit, &cstr);
1274 ppl_new_Linear_Expression_from_Constraint (&expr, cstr);
1275 ppl_Linear_Expression_coefficient (expr, iter, coef);
1276 ppl_Coefficient_to_mpz_t (coef, val);
1278 if (mpz_sgn (val) == 0)
1280 ppl_delete_Linear_Expression (expr);
1284 for (i = 0; i < pbb_nb_scattering_transform (pbb); i++)
1286 ppl_dimension_type scatter = psct_scattering_dim (pbb, i);
1288 ppl_Linear_Expression_coefficient (expr, scatter, coef);
1289 ppl_Coefficient_to_mpz_t (coef, val);
1291 if (mpz_sgn (val) != 0)
1294 ppl_delete_Linear_Expression (expr);
1295 ppl_delete_Coefficient (coef);
1296 ppl_delete_Constraint_System_const_iterator (cit);
1297 ppl_delete_Constraint_System_const_iterator (cend);
1307 /* Returns the number of iterations NITER of the loop around PBB at
1308 depth LOOP_DEPTH. */
1311 pbb_number_of_iterations (poly_bb_p pbb,
1312 graphite_dim_t loop_depth,
1315 ppl_Linear_Expression_t le;
1316 ppl_dimension_type dim;
1318 ppl_Pointset_Powerset_C_Polyhedron_space_dimension (PBB_DOMAIN (pbb), &dim);
1319 ppl_new_Linear_Expression_with_dimension (&le, dim);
1320 ppl_set_coef (le, pbb_iterator_dim (pbb, loop_depth), 1);
1321 mpz_set_si (niter, -1);
1322 ppl_max_for_le_pointset (PBB_DOMAIN (pbb), le, niter);
1323 ppl_delete_Linear_Expression (le);
1326 /* Returns the number of iterations NITER of the loop around PBB at
1327 time(scattering) dimension TIME_DEPTH. */
1330 pbb_number_of_iterations_at_time (poly_bb_p pbb,
1331 graphite_dim_t time_depth,
1334 ppl_Pointset_Powerset_C_Polyhedron_t ext_domain, sctr;
1335 ppl_Linear_Expression_t le;
1336 ppl_dimension_type dim;
1338 /* Takes together domain and scattering polyhedrons, and composes
1339 them into the bigger polyhedron that has the following format:
1341 t0..t_{n-1} | l0..l_{nlcl-1} | i0..i_{niter-1} | g0..g_{nparm-1}
1344 | t0..t_{n-1} are time dimensions (scattering dimensions)
1345 | l0..l_{nclc-1} are local variables in scattering function
1346 | i0..i_{niter-1} are original iteration variables
1347 | g0..g_{nparam-1} are global parameters. */
1349 ppl_new_Pointset_Powerset_C_Polyhedron_from_C_Polyhedron (&sctr,
1350 PBB_TRANSFORMED_SCATTERING (pbb));
1352 /* Extend the iteration domain with the scattering dimensions:
1353 0..0 | 0..0 | i0..i_{niter-1} | g0..g_{nparm-1}. */
1354 ppl_new_Pointset_Powerset_C_Polyhedron_from_Pointset_Powerset_C_Polyhedron
1355 (&ext_domain, PBB_DOMAIN (pbb));
1356 ppl_insert_dimensions_pointset (ext_domain, 0,
1357 pbb_nb_scattering_transform (pbb)
1358 + pbb_nb_local_vars (pbb));
1360 /* Add to sctr the extended domain. */
1361 ppl_Pointset_Powerset_C_Polyhedron_intersection_assign (sctr, ext_domain);
1363 /* Extract the number of iterations. */
1364 ppl_Pointset_Powerset_C_Polyhedron_space_dimension (sctr, &dim);
1365 ppl_new_Linear_Expression_with_dimension (&le, dim);
1366 ppl_set_coef (le, time_depth, 1);
1367 mpz_set_si (niter, -1);
1368 ppl_max_for_le_pointset (sctr, le, niter);
1370 ppl_delete_Linear_Expression (le);
1371 ppl_delete_Pointset_Powerset_C_Polyhedron (sctr);
1372 ppl_delete_Pointset_Powerset_C_Polyhedron (ext_domain);
1375 /* Translates LOOP to LST. */
1378 loop_to_lst (loop_p loop, VEC (poly_bb_p, heap) *bbs, int *i)
1381 VEC (lst_p, heap) *seq = VEC_alloc (lst_p, heap, 5);
1383 for (; VEC_iterate (poly_bb_p, bbs, *i, pbb); (*i)++)
1386 basic_block bb = GBB_BB (PBB_BLACK_BOX (pbb));
1388 if (bb->loop_father == loop)
1389 stmt = new_lst_stmt (pbb);
1390 else if (flow_bb_inside_loop_p (loop, bb))
1392 loop_p next = loop->inner;
1394 while (next && !flow_bb_inside_loop_p (next, bb))
1397 stmt = loop_to_lst (next, bbs, i);
1402 return new_lst_loop (seq);
1405 VEC_safe_push (lst_p, heap, seq, stmt);
1408 return new_lst_loop (seq);
1411 /* Reads the original scattering of the SCOP and returns an LST
1415 scop_to_lst (scop_p scop)
1418 int i, n = VEC_length (poly_bb_p, SCOP_BBS (scop));
1419 VEC (lst_p, heap) *seq = VEC_alloc (lst_p, heap, 5);
1420 sese region = SCOP_REGION (scop);
1422 for (i = 0; i < n; i++)
1424 poly_bb_p pbb = VEC_index (poly_bb_p, SCOP_BBS (scop), i);
1425 loop_p loop = outermost_loop_in_sese (region, GBB_BB (PBB_BLACK_BOX (pbb)));
1427 if (loop_in_sese_p (loop, region))
1428 res = loop_to_lst (loop, SCOP_BBS (scop), &i);
1430 res = new_lst_stmt (pbb);
1432 VEC_safe_push (lst_p, heap, seq, res);
1435 res = new_lst_loop (seq);
1436 SCOP_ORIGINAL_SCHEDULE (scop) = res;
1437 SCOP_TRANSFORMED_SCHEDULE (scop) = copy_lst (res);
1440 /* Print to FILE on a new line COLUMN white spaces. */
1443 lst_indent_to (FILE *file, int column)
1448 fprintf (file, "\n#");
1450 for (i = 0; i < column; i++)
1451 fprintf (file, " ");
1454 /* Print LST to FILE with INDENT spaces of indentation. */
1457 print_lst (FILE *file, lst_p lst, int indent)
1462 lst_indent_to (file, indent);
1464 if (LST_LOOP_P (lst))
1469 if (LST_LOOP_FATHER (lst))
1470 fprintf (file, "%d (loop", lst_dewey_number (lst));
1472 fprintf (file, "#(root");
1474 FOR_EACH_VEC_ELT (lst_p, LST_SEQ (lst), i, l)
1475 print_lst (file, l, indent + 2);
1477 fprintf (file, ")");
1480 fprintf (file, "%d stmt_%d", lst_dewey_number (lst), pbb_index (LST_PBB (lst)));
1483 /* Print LST to STDERR. */
1486 debug_lst (lst_p lst)
1488 print_lst (stderr, lst, 0);
1491 /* Pretty print to FILE the loop statement tree LST in DOT format. */
1494 dot_lst_1 (FILE *file, lst_p lst)
1499 if (LST_LOOP_P (lst))
1504 if (!LST_LOOP_FATHER (lst))
1505 fprintf (file, "L -> L_%d_%d\n",
1507 lst_dewey_number (lst));
1509 fprintf (file, "L_%d_%d -> L_%d_%d\n",
1510 lst_depth (LST_LOOP_FATHER (lst)),
1511 lst_dewey_number (LST_LOOP_FATHER (lst)),
1513 lst_dewey_number (lst));
1515 FOR_EACH_VEC_ELT (lst_p, LST_SEQ (lst), i, l)
1516 dot_lst_1 (file, l);
1520 fprintf (file, "L_%d_%d -> S_%d\n",
1521 lst_depth (LST_LOOP_FATHER (lst)),
1522 lst_dewey_number (LST_LOOP_FATHER (lst)),
1523 pbb_index (LST_PBB (lst)));
1527 /* Display the LST using dotty. */
1532 /* When debugging, enable the following code. This cannot be used
1533 in production compilers because it calls "system". */
1536 FILE *stream = fopen ("/tmp/lst.dot", "w");
1537 gcc_assert (stream);
1539 fputs ("digraph all {\n", stream);
1540 dot_lst_1 (stream, lst);
1541 fputs ("}\n\n", stream);
1544 x = system ("dotty /tmp/lst.dot &");
1546 fputs ("digraph all {\n", stderr);
1547 dot_lst_1 (stderr, lst);
1548 fputs ("}\n\n", stderr);