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", GBB_BB (PBB_BLACK_BOX (pbb
))->index
);
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
,
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_NB_REFS (pdr
) = 1;
320 PDR_ACCESSES (pdr
) = accesses
;
321 PDR_TYPE (pdr
) = type
;
323 PDR_NB_SUBSCRIPTS (pdr
) = nb_subscripts
;
324 VEC_safe_push (poly_dr_p
, heap
, PBB_DRS (pbb
), pdr
);
327 /* Free polyhedral data reference PDR. */
330 free_poly_dr (poly_dr_p pdr
)
332 ppl_delete_Pointset_Powerset_C_Polyhedron (PDR_ACCESSES (pdr
));
336 /* Create a new polyhedral black box. */
339 new_poly_bb (scop_p scop
, void *black_box
)
341 poly_bb_p pbb
= XNEW (struct poly_bb
);
343 PBB_DOMAIN (pbb
) = NULL
;
344 PBB_SCOP (pbb
) = scop
;
345 pbb_set_black_box (pbb
, black_box
);
346 PBB_TRANSFORMED (pbb
) = NULL
;
347 PBB_SAVED (pbb
) = NULL
;
348 PBB_ORIGINAL (pbb
) = NULL
;
349 PBB_DRS (pbb
) = VEC_alloc (poly_dr_p
, heap
, 3);
350 VEC_safe_push (poly_bb_p
, heap
, SCOP_BBS (scop
), pbb
);
353 /* Free polyhedral black box. */
356 free_poly_bb (poly_bb_p pbb
)
361 ppl_delete_Pointset_Powerset_C_Polyhedron (PBB_DOMAIN (pbb
));
363 if (PBB_TRANSFORMED (pbb
))
364 poly_scattering_free (PBB_TRANSFORMED (pbb
));
367 poly_scattering_free (PBB_SAVED (pbb
));
369 if (PBB_ORIGINAL (pbb
))
370 poly_scattering_free (PBB_ORIGINAL (pbb
));
373 for (i
= 0; VEC_iterate (poly_dr_p
, PBB_DRS (pbb
), i
, pdr
); i
++)
376 VEC_free (poly_dr_p
, heap
, PBB_DRS (pbb
));
381 print_pdr_access_layout (FILE *file
, poly_dr_p pdr
)
385 fprintf (file
, "# eq");
387 for (i
= 0; i
< pdr_dim_iter_domain (pdr
); i
++)
388 fprintf (file
, " i%d", (int) i
);
390 for (i
= 0; i
< pdr_nb_params (pdr
); i
++)
391 fprintf (file
, " p%d", (int) i
);
393 fprintf (file
, " alias");
395 for (i
= 0; i
< PDR_NB_SUBSCRIPTS (pdr
); i
++)
396 fprintf (file
, " sub%d", (int) i
);
398 fprintf (file
, " cst\n");
401 /* Prints to FILE the polyhedral data reference PDR. */
404 print_pdr (FILE *file
, poly_dr_p pdr
)
406 fprintf (file
, "pdr_%d (", PDR_ID (pdr
));
408 switch (PDR_TYPE (pdr
))
411 fprintf (file
, "read \n");
415 fprintf (file
, "write \n");
419 fprintf (file
, "may_write \n");
426 dump_data_reference (file
, (data_reference_p
) PDR_CDR (pdr
));
428 fprintf (file
, "data accesses (\n");
429 print_pdr_access_layout (file
, pdr
);
430 ppl_print_powerset_matrix (file
, PDR_ACCESSES (pdr
));
431 fprintf (file
, ")\n");
433 fprintf (file
, ")\n");
436 /* Prints to STDERR the polyhedral data reference PDR. */
439 debug_pdr (poly_dr_p pdr
)
441 print_pdr (stderr
, pdr
);
444 /* Creates a new SCOP containing REGION. */
447 new_scop (void *region
)
449 scop_p scop
= XNEW (struct scop
);
451 SCOP_DEP_GRAPH (scop
) = NULL
;
452 SCOP_CONTEXT (scop
) = NULL
;
453 scop_set_region (scop
, region
);
454 SCOP_BBS (scop
) = VEC_alloc (poly_bb_p
, heap
, 3);
455 SCOP_ORIGINAL_PDDRS (scop
) = htab_create (10, hash_poly_ddr_p
,
456 eq_poly_ddr_p
, free_poly_ddr
);
463 free_scop (scop_p scop
)
468 for (i
= 0; VEC_iterate (poly_bb_p
, SCOP_BBS (scop
), i
, pbb
); i
++)
471 VEC_free (poly_bb_p
, heap
, SCOP_BBS (scop
));
473 if (SCOP_CONTEXT (scop
))
474 ppl_delete_Pointset_Powerset_C_Polyhedron (SCOP_CONTEXT (scop
));
476 htab_delete (SCOP_ORIGINAL_PDDRS (scop
));
480 /* Print to FILE the domain of PBB. */
483 print_pbb_domain (FILE *file
, poly_bb_p pbb
)
486 gimple_bb_p gbb
= PBB_BLACK_BOX (pbb
);
488 if (!PBB_DOMAIN (pbb
))
491 fprintf (file
, "domains bb_%d (\n", GBB_BB (gbb
)->index
);
492 fprintf (file
, "# eq");
494 for (i
= 0; i
< pbb_dim_iter_domain (pbb
); i
++)
495 fprintf (file
, " i%d", (int) i
);
497 for (i
= 0; i
< pbb_nb_params (pbb
); i
++)
498 fprintf (file
, " p%d", (int) i
);
500 fprintf (file
, " cst\n");
502 if (PBB_DOMAIN (pbb
))
503 ppl_print_powerset_matrix (file
, PBB_DOMAIN (pbb
));
505 fprintf (file
, ")\n");
508 /* Dump the cases of a graphite basic block GBB on FILE. */
511 dump_gbb_cases (FILE *file
, gimple_bb_p gbb
)
515 VEC (gimple
, heap
) *cases
;
520 cases
= GBB_CONDITION_CASES (gbb
);
521 if (VEC_empty (gimple
, cases
))
524 fprintf (file
, "cases bb_%d (", GBB_BB (gbb
)->index
);
526 for (i
= 0; VEC_iterate (gimple
, cases
, i
, stmt
); i
++)
527 print_gimple_stmt (file
, stmt
, 0, 0);
529 fprintf (file
, ")\n");
532 /* Dump conditions of a graphite basic block GBB on FILE. */
535 dump_gbb_conditions (FILE *file
, gimple_bb_p gbb
)
539 VEC (gimple
, heap
) *conditions
;
544 conditions
= GBB_CONDITIONS (gbb
);
545 if (VEC_empty (gimple
, conditions
))
548 fprintf (file
, "conditions bb_%d (", GBB_BB (gbb
)->index
);
550 for (i
= 0; VEC_iterate (gimple
, conditions
, i
, stmt
); i
++)
551 print_gimple_stmt (file
, stmt
, 0, 0);
553 fprintf (file
, ")\n");
556 /* Print to FILE all the data references of PBB. */
559 print_pdrs (FILE *file
, poly_bb_p pbb
)
564 for (i
= 0; VEC_iterate (poly_dr_p
, PBB_DRS (pbb
), i
, pdr
); i
++)
565 print_pdr (file
, pdr
);
568 /* Print to STDERR all the data references of PBB. */
571 debug_pdrs (poly_bb_p pbb
)
573 print_pdrs (stderr
, pbb
);
576 /* Print to FILE the domain and scattering function of PBB. */
579 print_pbb (FILE *file
, poly_bb_p pbb
)
581 fprintf (file
, "pbb_%d (\n", GBB_BB (PBB_BLACK_BOX (pbb
))->index
);
582 dump_gbb_conditions (file
, PBB_BLACK_BOX (pbb
));
583 dump_gbb_cases (file
, PBB_BLACK_BOX (pbb
));
584 print_pdrs (file
, pbb
);
585 print_pbb_domain (file
, pbb
);
586 print_scattering_function (file
, pbb
);
587 fprintf (file
, ")\n");
590 /* Print to FILE the parameters of SCOP. */
593 print_scop_params (FILE *file
, scop_p scop
)
598 fprintf (file
, "parameters (\n");
599 for (i
= 0; VEC_iterate (tree
, SESE_PARAMS (SCOP_REGION (scop
)), i
, t
); i
++)
601 fprintf (file
, "p_%d -> ", i
);
602 print_generic_expr (file
, t
, 0);
603 fprintf (file
, "\n");
605 fprintf (file
, ")\n");
608 /* Print to FILE the context of SCoP. */
610 print_scop_context (FILE *file
, scop_p scop
)
614 fprintf (file
, "context (\n");
615 fprintf (file
, "# eq");
617 for (i
= 0; i
< scop_nb_params (scop
); i
++)
618 fprintf (file
, " p%d", (int) i
);
620 fprintf (file
, " cst\n");
622 if (SCOP_CONTEXT (scop
))
623 ppl_print_powerset_matrix (file
, SCOP_CONTEXT (scop
));
625 fprintf (file
, ")\n");
628 /* Print to FILE the SCOP. */
631 print_scop (FILE *file
, scop_p scop
)
636 fprintf (file
, "scop (\n");
637 print_scop_params (file
, scop
);
638 print_scop_context (file
, scop
);
640 for (i
= 0; VEC_iterate (poly_bb_p
, SCOP_BBS (scop
), i
, pbb
); i
++)
641 print_pbb (file
, pbb
);
643 fprintf (file
, ")\n");
646 /* Print to STDERR the domain of PBB. */
649 debug_pbb_domain (poly_bb_p pbb
)
651 print_pbb_domain (stderr
, pbb
);
654 /* Print to FILE the domain and scattering function of PBB. */
657 debug_pbb (poly_bb_p pbb
)
659 print_pbb (stderr
, pbb
);
662 /* Print to STDERR the context of SCOP. */
665 debug_scop_context (scop_p scop
)
667 print_scop_context (stderr
, scop
);
670 /* Print to STDERR the SCOP. */
673 debug_scop (scop_p scop
)
675 print_scop (stderr
, scop
);
678 /* Print to STDERR the parameters of SCOP. */
681 debug_scop_params (scop_p scop
)
683 print_scop_params (stderr
, scop
);
687 /* The dimension in the transformed scattering polyhedron of PBB
688 containing the scattering iterator for the loop at depth LOOP_DEPTH. */
691 psct_scattering_dim_for_loop_depth (poly_bb_p pbb
, graphite_dim_t loop_depth
)
693 ppl_const_Constraint_System_t pcs
;
694 ppl_Constraint_System_const_iterator_t cit
, cend
;
695 ppl_const_Constraint_t cstr
;
696 ppl_Polyhedron_t ph
= PBB_TRANSFORMED_SCATTERING (pbb
);
697 ppl_dimension_type iter
= psct_iterator_dim (pbb
, loop_depth
);
698 ppl_Linear_Expression_t expr
;
699 ppl_Coefficient_t coef
;
704 ppl_new_Coefficient (&coef
);
705 ppl_Polyhedron_get_constraints (ph
, &pcs
);
706 ppl_new_Constraint_System_const_iterator (&cit
);
707 ppl_new_Constraint_System_const_iterator (&cend
);
709 for (ppl_Constraint_System_begin (pcs
, cit
),
710 ppl_Constraint_System_end (pcs
, cend
);
711 !ppl_Constraint_System_const_iterator_equal_test (cit
, cend
);
712 ppl_Constraint_System_const_iterator_increment (cit
))
714 ppl_Constraint_System_const_iterator_dereference (cit
, &cstr
);
715 ppl_new_Linear_Expression_from_Constraint (&expr
, cstr
);
716 ppl_Linear_Expression_coefficient (expr
, iter
, coef
);
717 ppl_Coefficient_to_mpz_t (coef
, val
);
719 if (value_zero_p (val
))
721 ppl_delete_Linear_Expression (expr
);
725 for (i
= 0; i
< pbb_nb_scattering_transform (pbb
); i
++)
727 ppl_dimension_type scatter
= psct_scattering_dim (pbb
, i
);
729 ppl_Linear_Expression_coefficient (expr
, scatter
, coef
);
730 ppl_Coefficient_to_mpz_t (coef
, val
);
732 if (value_notzero_p (val
))
735 ppl_delete_Linear_Expression (expr
);
736 ppl_delete_Coefficient (coef
);
737 ppl_delete_Constraint_System_const_iterator (cit
);
738 ppl_delete_Constraint_System_const_iterator (cend
);
748 /* Returns the number of iterations NITER of the loop around PBB at
752 pbb_number_of_iterations (poly_bb_p pbb
,
753 graphite_dim_t loop_depth
,
756 ppl_Linear_Expression_t le
;
757 ppl_dimension_type dim
;
759 ppl_Pointset_Powerset_C_Polyhedron_space_dimension (PBB_DOMAIN (pbb
), &dim
);
760 ppl_new_Linear_Expression_with_dimension (&le
, dim
);
761 ppl_set_coef (le
, pbb_iterator_dim (pbb
, loop_depth
), 1);
762 value_set_si (niter
, -1);
763 ppl_max_for_le_pointset (PBB_DOMAIN (pbb
), le
, niter
);
764 ppl_delete_Linear_Expression (le
);
767 /* Returns the number of iterations NITER of the loop around PBB at
768 time(scattering) dimension TIME_DEPTH. */
771 pbb_number_of_iterations_at_time (poly_bb_p pbb
,
772 graphite_dim_t time_depth
,
775 ppl_Pointset_Powerset_C_Polyhedron_t ext_domain
, sctr
;
776 ppl_Linear_Expression_t le
;
777 ppl_dimension_type dim
;
779 value_set_si (niter
, -1);
781 /* Takes together domain and scattering polyhedrons, and composes
782 them into the bigger polyhedron that has the following format:
783 t0..t_{n-1} | l0..l_{nlcl-1} | i0..i_{niter-1} | g0..g_{nparm-1}.
784 t0..t_{n-1} are time dimensions (scattering dimensions)
785 l0..l_{nclc-1} are local variables in scatterin function
786 i0..i_{niter-1} are original iteration variables
787 g0..g_{nparam-1} are global parameters. */
789 ppl_new_Pointset_Powerset_C_Polyhedron_from_Pointset_Powerset_C_Polyhedron
790 (&ext_domain
, PBB_DOMAIN (pbb
));
791 ppl_insert_dimensions_pointset (ext_domain
, 0,
792 pbb_nb_scattering_transform (pbb
)
793 + pbb_nb_local_vars (pbb
));
794 ppl_new_Pointset_Powerset_C_Polyhedron_from_C_Polyhedron (&sctr
,
795 PBB_TRANSFORMED_SCATTERING (pbb
));
796 ppl_Pointset_Powerset_C_Polyhedron_intersection_assign (sctr
, ext_domain
);
798 ppl_Pointset_Powerset_C_Polyhedron_space_dimension (sctr
, &dim
);
799 ppl_new_Linear_Expression_with_dimension (&le
, dim
);
800 ppl_set_coef (le
, time_depth
, 1);
801 ppl_max_for_le_pointset (sctr
, le
, niter
);
803 ppl_delete_Linear_Expression (le
);
804 ppl_delete_Pointset_Powerset_C_Polyhedron (sctr
);
805 ppl_delete_Pointset_Powerset_C_Polyhedron (ext_domain
);