1 /* Graphite polyhedral representation.
2 Copyright (C) 2009 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-flow.h"
33 #include "tree-dump.h"
36 #include "tree-chrec.h"
37 #include "tree-data-ref.h"
38 #include "tree-scalar-evolution.h"
39 #include "tree-pass.h"
41 #include "value-prof.h"
42 #include "pointer-set.h"
47 #include "cloog/cloog.h"
50 #include "graphite-ppl.h"
52 #include "graphite-poly.h"
53 #include "graphite-dependences.h"
55 /* Return the maximal loop depth in SCOP. */
58 scop_max_loop_depth (scop_p scop)
64 for (i = 0; VEC_iterate (poly_bb_p, SCOP_BBS (scop), i, pbb); i++)
66 int nb_loops = pbb_dim_iter_domain (pbb);
67 if (max_nb_loops < nb_loops)
68 max_nb_loops = nb_loops;
74 /* Extend the scattering matrix of PBB to MAX_SCATTERING scattering
78 extend_scattering (poly_bb_p pbb, int max_scattering)
80 ppl_dimension_type nb_old_dims, nb_new_dims;
82 ppl_Coefficient_t coef;
85 nb_added_dims = max_scattering - pbb_nb_scattering_transform (pbb);
87 value_set_si (one, 1);
88 ppl_new_Coefficient (&coef);
89 ppl_assign_Coefficient_from_mpz_t (coef, one);
91 gcc_assert (nb_added_dims >= 0);
93 nb_old_dims = pbb_nb_scattering_transform (pbb) + pbb_dim_iter_domain (pbb)
94 + scop_nb_params (PBB_SCOP (pbb));
95 nb_new_dims = nb_old_dims + nb_added_dims;
97 ppl_insert_dimensions (PBB_TRANSFORMED_SCATTERING (pbb),
98 pbb_nb_scattering_transform (pbb), nb_added_dims);
99 PBB_NB_SCATTERING_TRANSFORM (pbb) += nb_added_dims;
101 /* Add identity matrix for the added dimensions. */
102 for (i = max_scattering - nb_added_dims; i < max_scattering; i++)
104 ppl_Constraint_t cstr;
105 ppl_Linear_Expression_t expr;
107 ppl_new_Linear_Expression_with_dimension (&expr, nb_new_dims);
108 ppl_Linear_Expression_add_to_coefficient (expr, i, coef);
109 ppl_new_Constraint (&cstr, expr, PPL_CONSTRAINT_TYPE_EQUAL);
110 ppl_Polyhedron_add_constraint (PBB_TRANSFORMED_SCATTERING (pbb), cstr);
111 ppl_delete_Constraint (cstr);
112 ppl_delete_Linear_Expression (expr);
115 ppl_delete_Coefficient (coef);
119 /* All scattering matrices in SCOP will have the same number of scattering
123 unify_scattering_dimensions (scop_p scop)
127 graphite_dim_t max_scattering = 0;
129 for (i = 0; VEC_iterate (poly_bb_p, SCOP_BBS (scop), i, pbb); i++)
130 max_scattering = MAX (pbb_nb_scattering_transform (pbb), max_scattering);
132 for (i = 0; VEC_iterate (poly_bb_p, SCOP_BBS (scop), i, pbb); i++)
133 extend_scattering (pbb, max_scattering);
135 return max_scattering;
138 /* Prints to FILE the scattering function of PBB. */
141 print_scattering_function (FILE *file, poly_bb_p pbb)
145 if (!PBB_TRANSFORMED (pbb))
148 fprintf (file, "scattering bb_%d (\n", pbb_index (pbb));
149 fprintf (file, "# eq");
151 for (i = 0; i < pbb_nb_scattering_transform (pbb); i++)
152 fprintf (file, " s%d", (int) i);
154 for (i = 0; i < pbb_nb_local_vars (pbb); i++)
155 fprintf (file, " lv%d", (int) i);
157 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
158 fprintf (file, " i%d", (int) i);
160 for (i = 0; i < pbb_nb_params (pbb); i++)
161 fprintf (file, " p%d", (int) i);
163 fprintf (file, " cst\n");
165 ppl_print_polyhedron_matrix (file, PBB_TRANSFORMED_SCATTERING (pbb));
167 fprintf (file, ")\n");
170 /* Prints to FILE the iteration domain of PBB. */
173 print_iteration_domain (FILE *file, poly_bb_p pbb)
175 print_pbb_domain (file, pbb);
178 /* Prints to FILE the scattering functions of every PBB of SCOP. */
181 print_scattering_functions (FILE *file, scop_p scop)
186 for (i = 0; VEC_iterate (poly_bb_p, SCOP_BBS (scop), i, pbb); i++)
187 print_scattering_function (file, pbb);
190 /* Prints to FILE the iteration domains of every PBB of SCOP. */
193 print_iteration_domains (FILE *file, scop_p scop)
198 for (i = 0; VEC_iterate (poly_bb_p, SCOP_BBS (scop), i, pbb); i++)
199 print_iteration_domain (file, pbb);
202 /* Prints to STDERR the scattering function of PBB. */
205 debug_scattering_function (poly_bb_p pbb)
207 print_scattering_function (stderr, pbb);
210 /* Prints to STDERR the iteration domain of PBB. */
213 debug_iteration_domain (poly_bb_p pbb)
215 print_iteration_domain (stderr, pbb);
218 /* Prints to STDERR the scattering functions of every PBB of SCOP. */
221 debug_scattering_functions (scop_p scop)
223 print_scattering_functions (stderr, scop);
226 /* Prints to STDERR the iteration domains of every PBB of SCOP. */
229 debug_iteration_domains (scop_p scop)
231 print_iteration_domains (stderr, scop);
234 /* Apply graphite transformations to all the basic blocks of SCOP. */
237 apply_poly_transforms (scop_p scop)
239 bool transform_done = false;
241 /* Generate code even if we did not apply any real transformation.
242 This also allows to check the performance for the identity
243 transformation: GIMPLE -> GRAPHITE -> GIMPLE
244 Keep in mind that CLooG optimizes in control, so the loop structure
245 may change, even if we only use -fgraphite-identity. */
246 if (flag_graphite_identity)
247 transform_done = true;
249 if (flag_loop_parallelize_all)
250 transform_done = true;
253 gcc_unreachable (); /* Not yet supported. */
255 if (flag_loop_strip_mine)
256 transform_done |= scop_do_strip_mine (scop);
258 if (flag_loop_interchange)
259 transform_done |= scop_do_interchange (scop);
261 return transform_done;
264 /* Returns true when it PDR1 is a duplicate of PDR2: same PBB, and
265 their ACCESSES, TYPE, and NB_SUBSCRIPTS are the same. */
268 can_collapse_pdrs (poly_dr_p pdr1, poly_dr_p pdr2)
271 ppl_Pointset_Powerset_C_Polyhedron_t af1, af2, diff;
273 if (PDR_PBB (pdr1) != PDR_PBB (pdr2)
274 || PDR_NB_SUBSCRIPTS (pdr1) != PDR_NB_SUBSCRIPTS (pdr2)
275 || PDR_TYPE (pdr1) != PDR_TYPE (pdr2))
278 af1 = PDR_ACCESSES (pdr1);
279 af2 = PDR_ACCESSES (pdr2);
280 ppl_new_Pointset_Powerset_C_Polyhedron_from_Pointset_Powerset_C_Polyhedron
282 ppl_Pointset_Powerset_C_Polyhedron_difference_assign (diff, af2);
284 res = ppl_Pointset_Powerset_C_Polyhedron_is_empty (diff);
285 ppl_delete_Pointset_Powerset_C_Polyhedron (diff);
289 /* Removes duplicated data references in PBB. */
292 pbb_remove_duplicate_pdrs (poly_bb_p pbb)
295 poly_dr_p pdr1, pdr2;
296 unsigned n = VEC_length (poly_dr_p, PBB_DRS (pbb));
297 VEC (poly_dr_p, heap) *collapsed = VEC_alloc (poly_dr_p, heap, n);
299 for (i = 0; VEC_iterate (poly_dr_p, PBB_DRS (pbb), i, pdr1); i++)
300 for (j = 0; VEC_iterate (poly_dr_p, collapsed, j, pdr2); j++)
301 if (!can_collapse_pdrs (pdr1, pdr2))
302 VEC_quick_push (poly_dr_p, collapsed, pdr1);
305 /* Create a new polyhedral data reference and add it to PBB. It is
306 defined by its ACCESSES, its TYPE, and the number of subscripts
310 new_poly_dr (poly_bb_p pbb, int dr_base_object_set,
311 ppl_Pointset_Powerset_C_Polyhedron_t accesses,
312 enum poly_dr_type type, void *cdr, graphite_dim_t nb_subscripts)
315 poly_dr_p pdr = XNEW (struct poly_dr);
318 PDR_BASE_OBJECT_SET (pdr) = dr_base_object_set;
319 PDR_NB_REFS (pdr) = 1;
321 PDR_ACCESSES (pdr) = accesses;
322 PDR_TYPE (pdr) = type;
324 PDR_NB_SUBSCRIPTS (pdr) = nb_subscripts;
325 VEC_safe_push (poly_dr_p, heap, PBB_DRS (pbb), pdr);
328 /* Free polyhedral data reference PDR. */
331 free_poly_dr (poly_dr_p pdr)
333 ppl_delete_Pointset_Powerset_C_Polyhedron (PDR_ACCESSES (pdr));
337 /* Create a new polyhedral black box. */
340 new_poly_bb (scop_p scop, void *black_box, bool reduction)
342 poly_bb_p pbb = XNEW (struct poly_bb);
344 PBB_DOMAIN (pbb) = NULL;
345 PBB_SCOP (pbb) = scop;
346 pbb_set_black_box (pbb, black_box);
347 PBB_TRANSFORMED (pbb) = NULL;
348 PBB_SAVED (pbb) = NULL;
349 PBB_ORIGINAL (pbb) = NULL;
350 PBB_DRS (pbb) = VEC_alloc (poly_dr_p, heap, 3);
351 PBB_IS_REDUCTION (pbb) = reduction;
352 VEC_safe_push (poly_bb_p, heap, SCOP_BBS (scop), pbb);
355 /* Free polyhedral black box. */
358 free_poly_bb (poly_bb_p pbb)
363 ppl_delete_Pointset_Powerset_C_Polyhedron (PBB_DOMAIN (pbb));
365 if (PBB_TRANSFORMED (pbb))
366 poly_scattering_free (PBB_TRANSFORMED (pbb));
369 poly_scattering_free (PBB_SAVED (pbb));
371 if (PBB_ORIGINAL (pbb))
372 poly_scattering_free (PBB_ORIGINAL (pbb));
375 for (i = 0; VEC_iterate (poly_dr_p, PBB_DRS (pbb), i, pdr); i++)
378 VEC_free (poly_dr_p, heap, PBB_DRS (pbb));
383 print_pdr_access_layout (FILE *file, poly_dr_p pdr)
387 fprintf (file, "# eq");
389 for (i = 0; i < pdr_dim_iter_domain (pdr); i++)
390 fprintf (file, " i%d", (int) i);
392 for (i = 0; i < pdr_nb_params (pdr); i++)
393 fprintf (file, " p%d", (int) i);
395 fprintf (file, " alias");
397 for (i = 0; i < PDR_NB_SUBSCRIPTS (pdr); i++)
398 fprintf (file, " sub%d", (int) i);
400 fprintf (file, " cst\n");
403 /* Prints to FILE the polyhedral data reference PDR. */
406 print_pdr (FILE *file, poly_dr_p pdr)
408 fprintf (file, "pdr_%d (", PDR_ID (pdr));
410 switch (PDR_TYPE (pdr))
413 fprintf (file, "read \n");
417 fprintf (file, "write \n");
421 fprintf (file, "may_write \n");
428 dump_data_reference (file, (data_reference_p) PDR_CDR (pdr));
430 fprintf (file, "data accesses (\n");
431 print_pdr_access_layout (file, pdr);
432 ppl_print_powerset_matrix (file, PDR_ACCESSES (pdr));
433 fprintf (file, ")\n");
435 fprintf (file, ")\n");
438 /* Prints to STDERR the polyhedral data reference PDR. */
441 debug_pdr (poly_dr_p pdr)
443 print_pdr (stderr, pdr);
446 /* Creates a new SCOP containing REGION. */
449 new_scop (void *region)
451 scop_p scop = XNEW (struct scop);
453 SCOP_CONTEXT (scop) = NULL;
454 scop_set_region (scop, region);
455 SCOP_BBS (scop) = VEC_alloc (poly_bb_p, heap, 3);
456 SCOP_ORIGINAL_PDDRS (scop) = htab_create (10, hash_poly_ddr_p,
457 eq_poly_ddr_p, free_poly_ddr);
464 free_scop (scop_p scop)
469 for (i = 0; VEC_iterate (poly_bb_p, SCOP_BBS (scop), i, pbb); i++)
472 VEC_free (poly_bb_p, heap, SCOP_BBS (scop));
474 if (SCOP_CONTEXT (scop))
475 ppl_delete_Pointset_Powerset_C_Polyhedron (SCOP_CONTEXT (scop));
477 htab_delete (SCOP_ORIGINAL_PDDRS (scop));
481 /* Print to FILE the domain of PBB. */
484 print_pbb_domain (FILE *file, poly_bb_p pbb)
487 gimple_bb_p gbb = PBB_BLACK_BOX (pbb);
489 if (!PBB_DOMAIN (pbb))
492 fprintf (file, "domains bb_%d (\n", GBB_BB (gbb)->index);
493 fprintf (file, "# eq");
495 for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
496 fprintf (file, " i%d", (int) i);
498 for (i = 0; i < pbb_nb_params (pbb); i++)
499 fprintf (file, " p%d", (int) i);
501 fprintf (file, " cst\n");
503 if (PBB_DOMAIN (pbb))
504 ppl_print_powerset_matrix (file, PBB_DOMAIN (pbb));
506 fprintf (file, ")\n");
509 /* Dump the cases of a graphite basic block GBB on FILE. */
512 dump_gbb_cases (FILE *file, gimple_bb_p gbb)
516 VEC (gimple, heap) *cases;
521 cases = GBB_CONDITION_CASES (gbb);
522 if (VEC_empty (gimple, cases))
525 fprintf (file, "cases bb_%d (", GBB_BB (gbb)->index);
527 for (i = 0; VEC_iterate (gimple, cases, i, stmt); i++)
528 print_gimple_stmt (file, stmt, 0, 0);
530 fprintf (file, ")\n");
533 /* Dump conditions of a graphite basic block GBB on FILE. */
536 dump_gbb_conditions (FILE *file, gimple_bb_p gbb)
540 VEC (gimple, heap) *conditions;
545 conditions = GBB_CONDITIONS (gbb);
546 if (VEC_empty (gimple, conditions))
549 fprintf (file, "conditions bb_%d (", GBB_BB (gbb)->index);
551 for (i = 0; VEC_iterate (gimple, conditions, i, stmt); i++)
552 print_gimple_stmt (file, stmt, 0, 0);
554 fprintf (file, ")\n");
557 /* Print to FILE all the data references of PBB. */
560 print_pdrs (FILE *file, poly_bb_p pbb)
565 for (i = 0; VEC_iterate (poly_dr_p, PBB_DRS (pbb), i, pdr); i++)
566 print_pdr (file, pdr);
569 /* Print to STDERR all the data references of PBB. */
572 debug_pdrs (poly_bb_p pbb)
574 print_pdrs (stderr, pbb);
577 /* Print to FILE the domain and scattering function of PBB. */
580 print_pbb (FILE *file, poly_bb_p pbb)
582 fprintf (file, "pbb_%d (\n", pbb_index (pbb));
583 dump_gbb_conditions (file, PBB_BLACK_BOX (pbb));
584 dump_gbb_cases (file, PBB_BLACK_BOX (pbb));
585 print_pdrs (file, pbb);
586 print_pbb_domain (file, pbb);
587 print_scattering_function (file, pbb);
588 fprintf (file, ")\n");
591 /* Print to FILE the parameters of SCOP. */
594 print_scop_params (FILE *file, scop_p scop)
599 fprintf (file, "parameters (\n");
600 for (i = 0; VEC_iterate (tree, SESE_PARAMS (SCOP_REGION (scop)), i, t); i++)
602 fprintf (file, "p_%d -> ", i);
603 print_generic_expr (file, t, 0);
604 fprintf (file, "\n");
606 fprintf (file, ")\n");
609 /* Print to FILE the context of SCoP. */
611 print_scop_context (FILE *file, scop_p scop)
615 fprintf (file, "context (\n");
616 fprintf (file, "# eq");
618 for (i = 0; i < scop_nb_params (scop); i++)
619 fprintf (file, " p%d", (int) i);
621 fprintf (file, " cst\n");
623 if (SCOP_CONTEXT (scop))
624 ppl_print_powerset_matrix (file, SCOP_CONTEXT (scop));
626 fprintf (file, ")\n");
629 /* Print to FILE the SCOP. */
632 print_scop (FILE *file, scop_p scop)
637 fprintf (file, "scop (\n");
638 print_scop_params (file, scop);
639 print_scop_context (file, scop);
641 for (i = 0; VEC_iterate (poly_bb_p, SCOP_BBS (scop), i, pbb); i++)
642 print_pbb (file, pbb);
644 fprintf (file, ")\n");
646 fprintf (file, "original_lst (\n");
647 print_lst (file, SCOP_ORIGINAL_SCHEDULE (scop), 0);
648 fprintf (file, ")\n");
650 fprintf (file, "transformed_lst (\n");
651 print_lst (file, SCOP_TRANSFORMED_SCHEDULE (scop), 0);
652 fprintf (file, ")\n");
655 /* Print to STDERR the domain of PBB. */
658 debug_pbb_domain (poly_bb_p pbb)
660 print_pbb_domain (stderr, pbb);
663 /* Print to FILE the domain and scattering function of PBB. */
666 debug_pbb (poly_bb_p pbb)
668 print_pbb (stderr, pbb);
671 /* Print to STDERR the context of SCOP. */
674 debug_scop_context (scop_p scop)
676 print_scop_context (stderr, scop);
679 /* Print to STDERR the SCOP. */
682 debug_scop (scop_p scop)
684 print_scop (stderr, scop);
687 /* Print to STDERR the parameters of SCOP. */
690 debug_scop_params (scop_p scop)
692 print_scop_params (stderr, scop);
696 /* The dimension in the transformed scattering polyhedron of PBB
697 containing the scattering iterator for the loop at depth LOOP_DEPTH. */
700 psct_scattering_dim_for_loop_depth (poly_bb_p pbb, graphite_dim_t loop_depth)
702 ppl_const_Constraint_System_t pcs;
703 ppl_Constraint_System_const_iterator_t cit, cend;
704 ppl_const_Constraint_t cstr;
705 ppl_Polyhedron_t ph = PBB_TRANSFORMED_SCATTERING (pbb);
706 ppl_dimension_type iter = psct_iterator_dim (pbb, loop_depth);
707 ppl_Linear_Expression_t expr;
708 ppl_Coefficient_t coef;
713 ppl_new_Coefficient (&coef);
714 ppl_Polyhedron_get_constraints (ph, &pcs);
715 ppl_new_Constraint_System_const_iterator (&cit);
716 ppl_new_Constraint_System_const_iterator (&cend);
718 for (ppl_Constraint_System_begin (pcs, cit),
719 ppl_Constraint_System_end (pcs, cend);
720 !ppl_Constraint_System_const_iterator_equal_test (cit, cend);
721 ppl_Constraint_System_const_iterator_increment (cit))
723 ppl_Constraint_System_const_iterator_dereference (cit, &cstr);
724 ppl_new_Linear_Expression_from_Constraint (&expr, cstr);
725 ppl_Linear_Expression_coefficient (expr, iter, coef);
726 ppl_Coefficient_to_mpz_t (coef, val);
728 if (value_zero_p (val))
730 ppl_delete_Linear_Expression (expr);
734 for (i = 0; i < pbb_nb_scattering_transform (pbb); i++)
736 ppl_dimension_type scatter = psct_scattering_dim (pbb, i);
738 ppl_Linear_Expression_coefficient (expr, scatter, coef);
739 ppl_Coefficient_to_mpz_t (coef, val);
741 if (value_notzero_p (val))
744 ppl_delete_Linear_Expression (expr);
745 ppl_delete_Coefficient (coef);
746 ppl_delete_Constraint_System_const_iterator (cit);
747 ppl_delete_Constraint_System_const_iterator (cend);
757 /* Returns the number of iterations NITER of the loop around PBB at
761 pbb_number_of_iterations (poly_bb_p pbb,
762 graphite_dim_t loop_depth,
765 ppl_Linear_Expression_t le;
766 ppl_dimension_type dim;
768 ppl_Pointset_Powerset_C_Polyhedron_space_dimension (PBB_DOMAIN (pbb), &dim);
769 ppl_new_Linear_Expression_with_dimension (&le, dim);
770 ppl_set_coef (le, pbb_iterator_dim (pbb, loop_depth), 1);
771 value_set_si (niter, -1);
772 ppl_max_for_le_pointset (PBB_DOMAIN (pbb), le, niter);
773 ppl_delete_Linear_Expression (le);
776 /* Returns the number of iterations NITER of the loop around PBB at
777 time(scattering) dimension TIME_DEPTH. */
780 pbb_number_of_iterations_at_time (poly_bb_p pbb,
781 graphite_dim_t time_depth,
784 ppl_Pointset_Powerset_C_Polyhedron_t ext_domain, sctr;
785 ppl_Linear_Expression_t le;
786 ppl_dimension_type dim;
788 value_set_si (niter, -1);
790 /* Takes together domain and scattering polyhedrons, and composes
791 them into the bigger polyhedron that has the following format:
792 t0..t_{n-1} | l0..l_{nlcl-1} | i0..i_{niter-1} | g0..g_{nparm-1}.
793 t0..t_{n-1} are time dimensions (scattering dimensions)
794 l0..l_{nclc-1} are local variables in scatterin function
795 i0..i_{niter-1} are original iteration variables
796 g0..g_{nparam-1} are global parameters. */
798 ppl_new_Pointset_Powerset_C_Polyhedron_from_Pointset_Powerset_C_Polyhedron
799 (&ext_domain, PBB_DOMAIN (pbb));
800 ppl_insert_dimensions_pointset (ext_domain, 0,
801 pbb_nb_scattering_transform (pbb)
802 + pbb_nb_local_vars (pbb));
803 ppl_new_Pointset_Powerset_C_Polyhedron_from_C_Polyhedron (&sctr,
804 PBB_TRANSFORMED_SCATTERING (pbb));
805 ppl_Pointset_Powerset_C_Polyhedron_intersection_assign (sctr, ext_domain);
807 ppl_Pointset_Powerset_C_Polyhedron_space_dimension (sctr, &dim);
808 ppl_new_Linear_Expression_with_dimension (&le, dim);
809 ppl_set_coef (le, time_depth, 1);
810 ppl_max_for_le_pointset (sctr, le, niter);
812 ppl_delete_Linear_Expression (le);
813 ppl_delete_Pointset_Powerset_C_Polyhedron (sctr);
814 ppl_delete_Pointset_Powerset_C_Polyhedron (ext_domain);
817 /* Translates LOOP to LST. */
820 loop_to_lst (loop_p loop, VEC (poly_bb_p, heap) *bbs, int *i)
823 VEC (lst_p, heap) *seq = VEC_alloc (lst_p, heap, 5);
825 for (; VEC_iterate (poly_bb_p, bbs, *i, pbb); (*i)++)
828 basic_block bb = GBB_BB (PBB_BLACK_BOX (pbb));
830 if (bb->loop_father == loop)
831 stmt = new_lst_stmt (pbb);
834 if (flow_bb_inside_loop_p (loop, bb))
835 stmt = loop_to_lst (loop->inner, bbs, i);
840 while ((next = next->next)
841 && !flow_bb_inside_loop_p (next, bb));
844 return new_lst_loop (seq);
846 stmt = loop_to_lst (next, bbs, i);
850 VEC_safe_push (lst_p, heap, seq, stmt);
853 return new_lst_loop (seq);
856 /* Reads the original scattering of the SCOP and returns an LST
860 scop_to_lst (scop_p scop)
862 poly_bb_p pbb = VEC_index (poly_bb_p, SCOP_BBS (scop), 0);
863 loop_p loop = outermost_loop_in_sese (SCOP_REGION (scop), GBB_BB (PBB_BLACK_BOX (pbb)));
866 SCOP_ORIGINAL_SCHEDULE (scop) = loop_to_lst (loop, SCOP_BBS (scop), &i);
867 SCOP_TRANSFORMED_SCHEDULE (scop) = copy_lst (SCOP_ORIGINAL_SCHEDULE (scop));
870 /* Print LST to FILE with INDENT spaces of indentation. */
873 print_lst (FILE *file, lst_p lst, int indent)
878 indent_to (file, indent);
880 if (LST_LOOP_P (lst))
885 fprintf (file, "%d (loop", lst_dewey_number (lst));
887 for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
888 print_lst (file, l, indent + 2);
893 fprintf (file, "%d stmt_%d", lst_dewey_number (lst), pbb_index (LST_PBB (lst)));
896 /* Print LST to STDERR. */
899 debug_lst (lst_p lst)
901 print_lst (stderr, lst, 0);