1 /* Graphite polyhedral representation.
2 Copyright (C) 2009-2014 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>
32 #if defined(__cplusplus)
35 #include <isl/val_gmp.h>
36 #if defined(__cplusplus)
42 #include "coretypes.h"
43 #include "diagnostic-core.h"
51 #include "hard-reg-set.h"
54 #include "dominance.h"
56 #include "basic-block.h"
57 #include "tree-ssa-alias.h"
58 #include "internal-fn.h"
59 #include "gimple-expr.h"
62 #include "gimple-iterator.h"
63 #include "tree-ssa-loop.h"
65 #include "gimple-pretty-print.h"
67 #include "tree-chrec.h"
68 #include "tree-data-ref.h"
69 #include "tree-scalar-evolution.h"
73 #include "graphite-poly.h"
75 #define OPENSCOP_MAX_STRING 256
78 /* Print to STDERR the GMP value VAL. */
81 debug_gmp_value (mpz_t val
)
83 gmp_fprintf (stderr
, "%Zd", val
);
86 /* Return the maximal loop depth in SCOP. */
89 scop_max_loop_depth (scop_p scop
)
95 FOR_EACH_VEC_ELT (SCOP_BBS (scop
), i
, pbb
)
97 int nb_loops
= pbb_dim_iter_domain (pbb
);
98 if (max_nb_loops
< nb_loops
)
99 max_nb_loops
= nb_loops
;
105 /* Prints to FILE the scattering function of PBB, at some VERBOSITY
109 print_scattering_function_1 (FILE *file
, poly_bb_p pbb
, int verbosity
)
115 fprintf (file
, "# scattering bb_%d (\n", pbb_index (pbb
));
116 fprintf (file
, "#eq");
118 for (i
= 0; i
< pbb_nb_scattering_transform (pbb
); i
++)
119 fprintf (file
, " s%d", (int) i
);
121 for (i
= 0; i
< pbb_nb_local_vars (pbb
); i
++)
122 fprintf (file
, " lv%d", (int) i
);
124 for (i
= 0; i
< pbb_dim_iter_domain (pbb
); i
++)
125 fprintf (file
, " i%d", (int) i
);
127 for (i
= 0; i
< pbb_nb_params (pbb
); i
++)
128 fprintf (file
, " p%d", (int) i
);
130 fprintf (file
, " cst\n");
133 fprintf (file
, "isl\n");
134 print_isl_map (file
, pbb
->transformed
? pbb
->transformed
: pbb
->schedule
);
137 fprintf (file
, "#)\n");
140 /* Prints to FILE the scattering function of PBB, at some VERBOSITY
144 print_scattering_function (FILE *file
, poly_bb_p pbb
, int verbosity
)
146 if (!PBB_TRANSFORMED (pbb
))
149 if (pbb
->schedule
|| pbb
->transformed
)
152 fprintf (file
, "# Scattering function is provided\n");
154 fprintf (file
, "1\n");
159 fprintf (file
, "# Scattering function is not provided\n");
161 fprintf (file
, "0\n");
165 print_scattering_function_1 (file
, pbb
, verbosity
);
168 fprintf (file
, "# Scattering names are not provided\n");
170 fprintf (file
, "0\n");
174 /* Prints to FILE the iteration domain of PBB, at some VERBOSITY
178 print_iteration_domain (FILE *file
, poly_bb_p pbb
, int verbosity
)
180 print_pbb_domain (file
, pbb
, verbosity
);
183 /* Prints to FILE the scattering functions of every PBB of SCOP. */
186 print_scattering_functions (FILE *file
, scop_p scop
, int verbosity
)
191 FOR_EACH_VEC_ELT (SCOP_BBS (scop
), i
, pbb
)
192 print_scattering_function (file
, pbb
, verbosity
);
195 /* Prints to FILE the iteration domains of every PBB of SCOP, at some
199 print_iteration_domains (FILE *file
, scop_p scop
, int verbosity
)
204 FOR_EACH_VEC_ELT (SCOP_BBS (scop
), i
, pbb
)
205 print_iteration_domain (file
, pbb
, verbosity
);
208 /* Prints to STDERR the scattering function of PBB, at some VERBOSITY
212 debug_scattering_function (poly_bb_p pbb
, int verbosity
)
214 print_scattering_function (stderr
, pbb
, verbosity
);
217 /* Prints to STDERR the iteration domain of PBB, at some VERBOSITY
221 debug_iteration_domain (poly_bb_p pbb
, int verbosity
)
223 print_iteration_domain (stderr
, pbb
, verbosity
);
226 /* Prints to STDERR the scattering functions of every PBB of SCOP, at
227 some VERBOSITY level. */
230 debug_scattering_functions (scop_p scop
, int verbosity
)
232 print_scattering_functions (stderr
, scop
, verbosity
);
235 /* Prints to STDERR the iteration domains of every PBB of SCOP, at
236 some VERBOSITY level. */
239 debug_iteration_domains (scop_p scop
, int verbosity
)
241 print_iteration_domains (stderr
, scop
, verbosity
);
244 /* Apply graphite transformations to all the basic blocks of SCOP. */
247 apply_poly_transforms (scop_p scop
)
249 bool transform_done
= false;
251 /* Generate code even if we did not apply any real transformation.
252 This also allows to check the performance for the identity
253 transformation: GIMPLE -> GRAPHITE -> GIMPLE
254 Keep in mind that CLooG optimizes in control, so the loop structure
255 may change, even if we only use -fgraphite-identity. */
256 if (flag_graphite_identity
)
257 transform_done
= true;
259 if (flag_loop_parallelize_all
)
260 transform_done
= true;
263 transform_done
|= scop_do_block (scop
);
266 if (flag_loop_strip_mine
)
267 transform_done
|= scop_do_strip_mine (scop
, 0);
269 if (flag_loop_interchange
)
270 transform_done
|= scop_do_interchange (scop
);
273 /* This pass needs to be run at the final stage, as it does not
275 if (flag_loop_optimize_isl
)
276 transform_done
|= optimize_isl (scop
);
278 return transform_done
;
281 /* Create a new polyhedral data reference and add it to PBB. It is
282 defined by its ACCESSES, its TYPE, and the number of subscripts
286 new_poly_dr (poly_bb_p pbb
, int dr_base_object_set
,
287 enum poly_dr_type type
, void *cdr
, graphite_dim_t nb_subscripts
,
288 isl_map
*acc
, isl_set
*extent
)
291 poly_dr_p pdr
= XNEW (struct poly_dr
);
294 PDR_BASE_OBJECT_SET (pdr
) = dr_base_object_set
;
295 PDR_NB_REFS (pdr
) = 1;
298 pdr
->extent
= extent
;
299 PDR_TYPE (pdr
) = type
;
301 PDR_NB_SUBSCRIPTS (pdr
) = nb_subscripts
;
302 PBB_DRS (pbb
).safe_push (pdr
);
305 /* Free polyhedral data reference PDR. */
308 free_poly_dr (poly_dr_p pdr
)
310 isl_map_free (pdr
->accesses
);
311 isl_set_free (pdr
->extent
);
315 /* Create a new polyhedral black box. */
318 new_poly_bb (scop_p scop
, void *black_box
)
320 poly_bb_p pbb
= XNEW (struct poly_bb
);
323 pbb
->schedule
= NULL
;
324 pbb
->transformed
= NULL
;
326 PBB_SCOP (pbb
) = scop
;
327 pbb_set_black_box (pbb
, black_box
);
328 PBB_TRANSFORMED (pbb
) = NULL
;
329 PBB_SAVED (pbb
) = NULL
;
330 PBB_ORIGINAL (pbb
) = NULL
;
331 PBB_DRS (pbb
).create (3);
332 PBB_IS_REDUCTION (pbb
) = false;
333 GBB_PBB ((gimple_bb_p
) black_box
) = pbb
;
338 /* Free polyhedral black box. */
341 free_poly_bb (poly_bb_p pbb
)
346 isl_set_free (pbb
->domain
);
347 isl_map_free (pbb
->schedule
);
348 isl_map_free (pbb
->transformed
);
349 isl_map_free (pbb
->saved
);
351 if (PBB_DRS (pbb
).exists ())
352 FOR_EACH_VEC_ELT (PBB_DRS (pbb
), i
, pdr
)
355 PBB_DRS (pbb
).release ();
360 print_pdr_access_layout (FILE *file
, poly_bb_p pbb
, poly_dr_p pdr
)
364 fprintf (file
, "# eq");
366 fprintf (file
, " alias");
368 for (i
= 0; i
< PDR_NB_SUBSCRIPTS (pdr
); i
++)
369 fprintf (file
, " sub%d", (int) i
);
371 for (i
= 0; i
< pbb_dim_iter_domain (pbb
); i
++)
372 fprintf (file
, " i%d", (int) i
);
374 for (i
= 0; i
< pbb_nb_params (pbb
); i
++)
375 fprintf (file
, " p%d", (int) i
);
377 fprintf (file
, " cst\n");
380 /* Prints to FILE the polyhedral data reference PDR, at some VERBOSITY
384 print_pdr (FILE *file
, poly_dr_p pdr
, int verbosity
)
388 fprintf (file
, "# pdr_%d (", PDR_ID (pdr
));
390 switch (PDR_TYPE (pdr
))
393 fprintf (file
, "read \n");
397 fprintf (file
, "write \n");
401 fprintf (file
, "may_write \n");
408 dump_data_reference (file
, (data_reference_p
) PDR_CDR (pdr
));
413 fprintf (file
, "# data accesses (\n");
414 print_pdr_access_layout (file
, PDR_PBB (pdr
), pdr
);
417 /* XXX isl dump accesses/subscripts */
420 fprintf (file
, "#)\n");
423 fprintf (file
, "#)\n");
426 /* Prints to STDERR the polyhedral data reference PDR, at some
430 debug_pdr (poly_dr_p pdr
, int verbosity
)
432 print_pdr (stderr
, pdr
, verbosity
);
435 /* Creates a new SCOP containing REGION. */
438 new_scop (void *region
)
440 scop_p scop
= XNEW (struct scop
);
442 scop
->context
= NULL
;
443 scop
->must_raw
= NULL
;
444 scop
->may_raw
= NULL
;
445 scop
->must_raw_no_source
= NULL
;
446 scop
->may_raw_no_source
= NULL
;
447 scop
->must_war
= NULL
;
448 scop
->may_war
= NULL
;
449 scop
->must_war_no_source
= NULL
;
450 scop
->may_war_no_source
= NULL
;
451 scop
->must_waw
= NULL
;
452 scop
->may_waw
= NULL
;
453 scop
->must_waw_no_source
= NULL
;
454 scop
->may_waw_no_source
= NULL
;
455 scop_set_region (scop
, region
);
456 SCOP_BBS (scop
).create (3);
457 SCOP_ORIGINAL_SCHEDULE (scop
) = NULL
;
458 SCOP_TRANSFORMED_SCHEDULE (scop
) = NULL
;
459 SCOP_SAVED_SCHEDULE (scop
) = NULL
;
460 POLY_SCOP_P (scop
) = false;
468 free_scop (scop_p scop
)
473 FOR_EACH_VEC_ELT (SCOP_BBS (scop
), i
, pbb
)
476 SCOP_BBS (scop
).release ();
478 isl_set_free (scop
->context
);
479 isl_union_map_free (scop
->must_raw
);
480 isl_union_map_free (scop
->may_raw
);
481 isl_union_map_free (scop
->must_raw_no_source
);
482 isl_union_map_free (scop
->may_raw_no_source
);
483 isl_union_map_free (scop
->must_war
);
484 isl_union_map_free (scop
->may_war
);
485 isl_union_map_free (scop
->must_war_no_source
);
486 isl_union_map_free (scop
->may_war_no_source
);
487 isl_union_map_free (scop
->must_waw
);
488 isl_union_map_free (scop
->may_waw
);
489 isl_union_map_free (scop
->must_waw_no_source
);
490 isl_union_map_free (scop
->may_waw_no_source
);
491 free_lst (SCOP_ORIGINAL_SCHEDULE (scop
));
492 free_lst (SCOP_TRANSFORMED_SCHEDULE (scop
));
493 free_lst (SCOP_SAVED_SCHEDULE (scop
));
497 /* Print to FILE the domain of PBB in OpenScop format, at some VERBOSITY
501 openscop_print_pbb_domain (FILE *file
, poly_bb_p pbb
, int verbosity
)
504 gimple_bb_p gbb
= PBB_BLACK_BOX (pbb
);
511 fprintf (file
, "\n# Iteration domain of bb_%d (\n", GBB_BB (gbb
)->index
);
512 fprintf (file
, "#eq");
514 for (i
= 0; i
< pbb_dim_iter_domain (pbb
); i
++)
515 fprintf (file
, " i%d", (int) i
);
517 for (i
= 0; i
< pbb_nb_params (pbb
); i
++)
518 fprintf (file
, " p%d", (int) i
);
520 fprintf (file
, " cst\n");
523 fprintf (file
, "XXX isl\n");
526 fprintf (file
, "#)\n");
529 /* Print to FILE the domain of PBB, at some VERBOSITY level. */
532 print_pbb_domain (FILE *file
, poly_bb_p pbb
, int verbosity ATTRIBUTE_UNUSED
)
534 print_isl_set (file
, pbb
->domain
);
537 /* Dump the cases of a graphite basic block GBB on FILE. */
540 dump_gbb_cases (FILE *file
, gimple_bb_p gbb
)
549 cases
= GBB_CONDITION_CASES (gbb
);
550 if (cases
.is_empty ())
553 fprintf (file
, "# cases bb_%d (\n", GBB_BB (gbb
)->index
);
555 FOR_EACH_VEC_ELT (cases
, i
, stmt
)
557 fprintf (file
, "# ");
558 print_gimple_stmt (file
, stmt
, 0, 0);
561 fprintf (file
, "#)\n");
564 /* Dump conditions of a graphite basic block GBB on FILE. */
567 dump_gbb_conditions (FILE *file
, gimple_bb_p gbb
)
571 vec
<gimple
> conditions
;
576 conditions
= GBB_CONDITIONS (gbb
);
577 if (conditions
.is_empty ())
580 fprintf (file
, "# conditions bb_%d (\n", GBB_BB (gbb
)->index
);
582 FOR_EACH_VEC_ELT (conditions
, i
, stmt
)
584 fprintf (file
, "# ");
585 print_gimple_stmt (file
, stmt
, 0, 0);
588 fprintf (file
, "#)\n");
591 /* Print to FILE all the data references of PBB, at some VERBOSITY
595 print_pdrs (FILE *file
, poly_bb_p pbb
, int verbosity
)
602 if (PBB_DRS (pbb
).length () == 0)
605 fprintf (file
, "# Access informations are not provided\n");\
606 fprintf (file
, "0\n");
611 fprintf (file
, "# Data references (\n");
614 fprintf (file
, "# Access informations are provided\n");
615 fprintf (file
, "1\n");
617 FOR_EACH_VEC_ELT (PBB_DRS (pbb
), i
, pdr
)
618 if (PDR_TYPE (pdr
) == PDR_READ
)
624 fprintf (file
, "# Read data references (\n");
627 fprintf (file
, "# Read access informations\n");
628 fprintf (file
, "%d\n", nb_reads
);
630 FOR_EACH_VEC_ELT (PBB_DRS (pbb
), i
, pdr
)
631 if (PDR_TYPE (pdr
) == PDR_READ
)
632 print_pdr (file
, pdr
, verbosity
);
635 fprintf (file
, "#)\n");
638 fprintf (file
, "# Write data references (\n");
641 fprintf (file
, "# Write access informations\n");
642 fprintf (file
, "%d\n", nb_writes
);
644 FOR_EACH_VEC_ELT (PBB_DRS (pbb
), i
, pdr
)
645 if (PDR_TYPE (pdr
) != PDR_READ
)
646 print_pdr (file
, pdr
, verbosity
);
649 fprintf (file
, "#)\n");
652 fprintf (file
, "#)\n");
655 /* Print to STDERR all the data references of PBB. */
658 debug_pdrs (poly_bb_p pbb
, int verbosity
)
660 print_pdrs (stderr
, pbb
, verbosity
);
663 /* Print to FILE the body of PBB, at some VERBOSITY level.
664 If statement_body_provided is false statement body is not printed. */
667 print_pbb_body (FILE *file
, poly_bb_p pbb
, int verbosity
,
668 bool statement_body_provided
)
671 fprintf (file
, "# Body (\n");
673 if (!statement_body_provided
)
676 fprintf (file
, "# Statement body is not provided\n");
678 fprintf (file
, "0\n");
681 fprintf (file
, "#)\n");
686 fprintf (file
, "# Statement body is provided\n");
687 fprintf (file
, "1\n");
690 fprintf (file
, "# Original iterator names\n# Iterator names are not provided yet.\n");
693 fprintf (file
, "# Statement body\n");
695 fprintf (file
, "{\n");
696 dump_bb (file
, pbb_bb (pbb
), 0, 0);
697 fprintf (file
, "}\n");
700 fprintf (file
, "#)\n");
703 /* Print to FILE the domain and scattering function of PBB, at some
707 print_pbb (FILE *file
, poly_bb_p pbb
, int verbosity
)
711 fprintf (file
, "# pbb_%d (\n", pbb_index (pbb
));
712 dump_gbb_conditions (file
, PBB_BLACK_BOX (pbb
));
713 dump_gbb_cases (file
, PBB_BLACK_BOX (pbb
));
716 openscop_print_pbb_domain (file
, pbb
, verbosity
);
717 print_scattering_function (file
, pbb
, verbosity
);
718 print_pdrs (file
, pbb
, verbosity
);
719 print_pbb_body (file
, pbb
, verbosity
, false);
722 fprintf (file
, "#)\n");
725 /* Print to FILE the parameters of SCOP, at some VERBOSITY level. */
728 print_scop_params (FILE *file
, scop_p scop
, int verbosity
)
734 fprintf (file
, "# parameters (\n");
736 if (SESE_PARAMS (SCOP_REGION (scop
)).length ())
739 fprintf (file
, "# Parameter names are provided\n");
741 fprintf (file
, "1\n");
744 fprintf (file
, "# Parameter names\n");
749 fprintf (file
, "# Parameter names are not provided\n");
750 fprintf (file
, "0\n");
753 FOR_EACH_VEC_ELT (SESE_PARAMS (SCOP_REGION (scop
)), i
, t
)
755 print_generic_expr (file
, t
, 0);
759 fprintf (file
, "\n");
762 fprintf (file
, "#)\n");
765 /* Print to FILE the context of SCoP in OpenScop format, at some VERBOSITY
769 openscop_print_scop_context (FILE *file
, scop_p scop
, int verbosity
)
775 fprintf (file
, "# Context (\n");
776 fprintf (file
, "#eq");
778 for (i
= 0; i
< scop_nb_params (scop
); i
++)
779 fprintf (file
, " p%d", (int) i
);
781 fprintf (file
, " cst\n");
785 /* XXX isl print context */
786 fprintf (file
, "XXX isl\n");
788 fprintf (file
, "0 %d 0 0 0 %d\n", (int) scop_nb_params (scop
) + 2,
789 (int) scop_nb_params (scop
));
792 fprintf (file
, "# )\n");
795 /* Print to FILE the context of SCoP, at some VERBOSITY level. */
798 print_scop_context (FILE *file
, scop_p scop
, int verbosity
)
804 fprintf (file
, "# Context (\n");
805 fprintf (file
, "#eq");
807 for (i
= 0; i
< scop_nb_params (scop
); i
++)
808 fprintf (file
, " p%d", (int) i
);
810 fprintf (file
, " cst\n");
814 print_isl_set (file
, scop
->context
);
816 fprintf (file
, "no isl context %d\n", (int) scop_nb_params (scop
) + 2);
819 fprintf (file
, "# )\n");
822 /* Print to FILE the SCOP, at some VERBOSITY level. */
825 print_scop (FILE *file
, scop_p scop
, int verbosity
)
830 fprintf (file
, "SCoP 1\n#(\n");
831 fprintf (file
, "# Language\nGimple\n");
832 openscop_print_scop_context (file
, scop
, verbosity
);
833 print_scop_params (file
, scop
, verbosity
);
836 fprintf (file
, "# Number of statements\n");
838 fprintf (file
, "%d\n", SCOP_BBS (scop
).length ());
840 FOR_EACH_VEC_ELT (SCOP_BBS (scop
), i
, pbb
)
841 print_pbb (file
, pbb
, verbosity
);
845 fprintf (file
, "# original_lst (\n");
846 print_lst (file
, SCOP_ORIGINAL_SCHEDULE (scop
), 0);
847 fprintf (file
, "\n#)\n");
849 fprintf (file
, "# transformed_lst (\n");
850 print_lst (file
, SCOP_TRANSFORMED_SCHEDULE (scop
), 0);
851 fprintf (file
, "\n#)\n");
854 fprintf (file
, "#)\n");
857 /* Print to STDERR the domain of PBB, at some VERBOSITY level. */
860 debug_pbb_domain (poly_bb_p pbb
, int verbosity
)
862 print_pbb_domain (stderr
, pbb
, verbosity
);
865 /* Print to FILE the domain and scattering function of PBB, at some
869 debug_pbb (poly_bb_p pbb
, int verbosity
)
871 print_pbb (stderr
, pbb
, verbosity
);
874 /* Print to STDERR the context of SCOP, at some VERBOSITY level. */
877 debug_scop_context (scop_p scop
, int verbosity
)
879 print_scop_context (stderr
, scop
, verbosity
);
882 /* Print to STDERR the SCOP, at some VERBOSITY level. */
885 debug_scop (scop_p scop
, int verbosity
)
887 print_scop (stderr
, scop
, verbosity
);
890 /* Print to STDERR the parameters of SCOP, at some VERBOSITY
894 debug_scop_params (scop_p scop
, int verbosity
)
896 print_scop_params (stderr
, scop
, verbosity
);
899 extern isl_ctx
*the_isl_ctx
;
901 print_isl_set (FILE *f
, isl_set
*set
)
903 isl_printer
*p
= isl_printer_to_file (the_isl_ctx
, f
);
904 p
= isl_printer_print_set (p
, set
);
905 isl_printer_free (p
);
909 debug_isl_set (isl_set
*set
)
911 print_isl_set (stderr
, set
);
915 print_isl_map (FILE *f
, isl_map
*map
)
917 isl_printer
*p
= isl_printer_to_file (the_isl_ctx
, f
);
918 p
= isl_printer_print_map (p
, map
);
919 isl_printer_free (p
);
923 debug_isl_map (isl_map
*map
)
925 print_isl_map (stderr
, map
);
929 print_isl_aff (FILE *f
, isl_aff
*aff
)
931 isl_printer
*p
= isl_printer_to_file (the_isl_ctx
, f
);
932 p
= isl_printer_print_aff (p
, aff
);
933 isl_printer_free (p
);
937 debug_isl_aff (isl_aff
*aff
)
939 print_isl_aff (stderr
, aff
);
943 print_isl_constraint (FILE *f
, isl_constraint
*c
)
945 isl_printer
*p
= isl_printer_to_file (the_isl_ctx
, f
);
946 p
= isl_printer_print_constraint (p
, c
);
947 isl_printer_free (p
);
951 debug_isl_constraint (isl_constraint
*c
)
953 print_isl_constraint (stderr
, c
);
956 /* Returns the number of iterations RES of the loop around PBB at
957 time(scattering) dimension TIME_DEPTH. */
960 pbb_number_of_iterations_at_time (poly_bb_p pbb
,
961 graphite_dim_t time_depth
,
964 isl_set
*transdomain
;
967 isl_val
*isllb
, *islub
;
969 /* Map the iteration domain through the current scatter, and work
970 on the resulting set. */
971 transdomain
= isl_set_apply (isl_set_copy (pbb
->domain
),
972 isl_map_copy (pbb
->transformed
));
974 /* Select the time_depth' dimension via an affine expression. */
975 dc
= isl_set_get_space (transdomain
);
976 aff
= isl_aff_zero_on_domain (isl_local_space_from_space (dc
));
977 aff
= isl_aff_set_coefficient_si (aff
, isl_dim_in
, time_depth
, 1);
979 /* And find the min/max for that function. */
980 /* XXX isl check results? */
981 isllb
= isl_set_min_val (transdomain
, aff
);
982 islub
= isl_set_max_val (transdomain
, aff
);
984 islub
= isl_val_sub (islub
, isllb
);
985 islub
= isl_val_add_ui (islub
, 1);
986 isl_val_get_num_gmp (islub
, res
);
988 isl_val_free (islub
);
990 isl_set_free (transdomain
);
993 /* Translates LOOP to LST. */
996 loop_to_lst (loop_p loop
, vec
<poly_bb_p
> bbs
, int *i
)
1002 for (; bbs
.iterate (*i
, &pbb
); (*i
)++)
1005 basic_block bb
= GBB_BB (PBB_BLACK_BOX (pbb
));
1007 if (bb
->loop_father
== loop
)
1008 stmt
= new_lst_stmt (pbb
);
1009 else if (flow_bb_inside_loop_p (loop
, bb
))
1011 loop_p next
= loop
->inner
;
1013 while (next
&& !flow_bb_inside_loop_p (next
, bb
))
1016 stmt
= loop_to_lst (next
, bbs
, i
);
1021 return new_lst_loop (seq
);
1024 seq
.safe_push (stmt
);
1027 return new_lst_loop (seq
);
1030 /* Reads the original scattering of the SCOP and returns an LST
1034 scop_to_lst (scop_p scop
)
1037 int i
, n
= SCOP_BBS (scop
).length ();
1040 sese region
= SCOP_REGION (scop
);
1042 for (i
= 0; i
< n
; i
++)
1044 poly_bb_p pbb
= SCOP_BBS (scop
)[i
];
1045 loop_p loop
= outermost_loop_in_sese (region
, GBB_BB (PBB_BLACK_BOX (pbb
)));
1047 if (loop_in_sese_p (loop
, region
))
1048 res
= loop_to_lst (loop
, SCOP_BBS (scop
), &i
);
1050 res
= new_lst_stmt (pbb
);
1052 seq
.safe_push (res
);
1055 res
= new_lst_loop (seq
);
1056 SCOP_ORIGINAL_SCHEDULE (scop
) = res
;
1057 SCOP_TRANSFORMED_SCHEDULE (scop
) = copy_lst (res
);
1060 /* Print to FILE on a new line COLUMN white spaces. */
1063 lst_indent_to (FILE *file
, int column
)
1068 fprintf (file
, "\n#");
1070 for (i
= 0; i
< column
; i
++)
1071 fprintf (file
, " ");
1074 /* Print LST to FILE with INDENT spaces of indentation. */
1077 print_lst (FILE *file
, lst_p lst
, int indent
)
1082 lst_indent_to (file
, indent
);
1084 if (LST_LOOP_P (lst
))
1089 if (LST_LOOP_FATHER (lst
))
1090 fprintf (file
, "%d (loop", lst_dewey_number (lst
));
1092 fprintf (file
, "#(root");
1094 FOR_EACH_VEC_ELT (LST_SEQ (lst
), i
, l
)
1095 print_lst (file
, l
, indent
+ 2);
1097 fprintf (file
, ")");
1100 fprintf (file
, "%d stmt_%d", lst_dewey_number (lst
), pbb_index (LST_PBB (lst
)));
1103 /* Print LST to STDERR. */
1106 debug_lst (lst_p lst
)
1108 print_lst (stderr
, lst
, 0);
1111 /* Pretty print to FILE the loop statement tree LST in DOT format. */
1114 dot_lst_1 (FILE *file
, lst_p lst
)
1119 if (LST_LOOP_P (lst
))
1124 if (!LST_LOOP_FATHER (lst
))
1125 fprintf (file
, "L -> L_%d_%d\n",
1127 lst_dewey_number (lst
));
1129 fprintf (file
, "L_%d_%d -> L_%d_%d\n",
1130 lst_depth (LST_LOOP_FATHER (lst
)),
1131 lst_dewey_number (LST_LOOP_FATHER (lst
)),
1133 lst_dewey_number (lst
));
1135 FOR_EACH_VEC_ELT (LST_SEQ (lst
), i
, l
)
1136 dot_lst_1 (file
, l
);
1140 fprintf (file
, "L_%d_%d -> S_%d\n",
1141 lst_depth (LST_LOOP_FATHER (lst
)),
1142 lst_dewey_number (LST_LOOP_FATHER (lst
)),
1143 pbb_index (LST_PBB (lst
)));
1147 /* Display the LST using dotty. */
1152 /* When debugging, enable the following code. This cannot be used
1153 in production compilers because it calls "system". */
1155 FILE *stream
= fopen ("/tmp/lst.dot", "w");
1156 gcc_assert (stream
);
1158 fputs ("digraph all {\n", stream
);
1159 dot_lst_1 (stream
, lst
);
1160 fputs ("}\n\n", stream
);
1163 system ("dotty /tmp/lst.dot &");
1165 fputs ("digraph all {\n", stderr
);
1166 dot_lst_1 (stderr
, lst
);
1167 fputs ("}\n\n", stderr
);
1172 /* Reverse the loop around PBB at level DEPTH. */
1175 reverse_loop_at_level (poly_bb_p pbb
, int depth
)
1177 unsigned i
, depth_dim
= psct_dynamic_dim (pbb
, depth
);
1178 isl_space
*d
= isl_map_get_space (pbb
->transformed
);
1179 isl_space
*d1
= isl_space_range (d
);
1180 unsigned n
= isl_space_dim (d1
, isl_dim_out
);
1181 isl_space
*d2
= isl_space_add_dims (d1
, isl_dim_in
, n
);
1182 isl_map
*x
= isl_map_universe (isl_space_copy (d2
));
1183 isl_constraint
*c
= isl_equality_alloc (isl_local_space_from_space (d2
));
1185 for (i
= 0; i
< n
; i
++)
1187 x
= isl_map_equate (x
, isl_dim_in
, i
, isl_dim_out
, i
);
1189 c
= isl_constraint_set_coefficient_si (c
, isl_dim_in
, depth_dim
, 1);
1190 c
= isl_constraint_set_coefficient_si (c
, isl_dim_out
, depth_dim
, 1);
1191 x
= isl_map_add_constraint (x
, c
);
1195 /* Reverse the loop at level DEPTH for all the PBBS. */
1198 reverse_loop_for_pbbs (scop_p scop
, vec
<poly_bb_p
> pbbs
, int depth
)
1202 isl_space
*space
= isl_space_from_domain (isl_set_get_space (scop
->context
));
1203 isl_union_map
*res
= isl_union_map_empty (space
);
1205 for (i
= 0; pbbs
.iterate (i
, &pbb
); i
++)
1206 res
= isl_union_map_add_map (res
, reverse_loop_at_level (pbb
, depth
));