/* Data dependence analysis for Graphite.
- Copyright (C) 2009-2015 Free Software Foundation, Inc.
+ Copyright (C) 2009-2016 Free Software Foundation, Inc.
Contributed by Sebastian Pop <sebastian.pop@amd.com> and
Konrad Trifunovic <konrad.trifunovic@inria.fr>.
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
+#define USES_ISL
+
#include "config.h"
#ifdef HAVE_isl
-/* Workaround for GMP 5.1.3 bug, see PR56019. */
-#include <stddef.h>
-
-#include <isl/constraint.h>
-#include <isl/set.h>
-#include <isl/map.h>
-#include <isl/union_map.h>
-#include <isl/flow.h>
-#include <isl/constraint.h>
#include "system.h"
#include "coretypes.h"
#include "tree-pass.h"
#include "cfgloop.h"
#include "tree-data-ref.h"
-#include "graphite-poly.h"
-
+#include "graphite.h"
/* Add the constraints from the set S to the domain of MAP. */
{
FOR_EACH_VEC_ELT (PBB_DRS (pbb), j, pdr)
if (pdr_read_p (pdr))
- res = isl_union_map_add_map (res, add_pdr_constraints (pdr, pbb));
+ {
+ if (dump_file)
+ {
+ fprintf (dump_file, "Adding read to depedence graph: ");
+ print_pdr (dump_file, pdr);
+ }
+ res = isl_union_map_add_map (res, add_pdr_constraints (pdr, pbb));
+ if (dump_file)
+ {
+ fprintf (dump_file, "Reads depedence graph: ");
+ print_isl_union_map (dump_file, res);
+ }
+ }
}
return res;
{
FOR_EACH_VEC_ELT (PBB_DRS (pbb), j, pdr)
if (pdr_write_p (pdr))
- res = isl_union_map_add_map (res, add_pdr_constraints (pdr, pbb));
+ {
+ if (dump_file)
+ {
+ fprintf (dump_file, "Adding must write to depedence graph: ");
+ print_pdr (dump_file, pdr);
+ }
+ res = isl_union_map_add_map (res, add_pdr_constraints (pdr, pbb));
+ if (dump_file)
+ {
+ fprintf (dump_file, "Must writes depedence graph: ");
+ print_isl_union_map (dump_file, res);
+ }
+ }
}
return res;
{
FOR_EACH_VEC_ELT (PBB_DRS (pbb), j, pdr)
if (pdr_may_write_p (pdr))
- res = isl_union_map_add_map (res, add_pdr_constraints (pdr, pbb));
+ {
+ if (dump_file)
+ {
+ fprintf (dump_file, "Adding may write to depedence graph: ");
+ print_pdr (dump_file, pdr);
+ }
+ res = isl_union_map_add_map (res, add_pdr_constraints (pdr, pbb));
+ if (dump_file)
+ {
+ fprintf (dump_file, "May writes depedence graph: ");
+ print_isl_union_map (dump_file, res);
+ }
+ }
}
return res;
isl_union_map *empty = isl_union_map_empty (space);
isl_union_map *original = scop_get_original_schedule (scop, pbbs);
+ if (dump_file)
+ {
+ fprintf (dump_file, "\n--- Documentation for datarefs dump: ---\n");
+ fprintf (dump_file, "Statements on the iteration domain are mapped to"
+ " array references.\n");
+ fprintf (dump_file, " To read the following data references:\n\n");
+ fprintf (dump_file, " S_5[i0] -> [106] : i0 >= 0 and i0 <= 3\n");
+ fprintf (dump_file, " S_8[i0] -> [1, i0] : i0 >= 0 and i0 <= 3\n\n");
+
+ fprintf (dump_file, " S_5[i0] is the dynamic instance of statement"
+ " bb_5 in a loop that accesses all iterations 0 <= i0 <= 3.\n");
+ fprintf (dump_file, " [1, i0] is a 'memref' with alias set 1"
+ " and first subscript access i0.\n");
+ fprintf (dump_file, " [106] is a 'scalar reference' which is the sum of"
+ " SSA_NAME_VERSION 6"
+ " and --param graphite-max-arrays-per-scop=100\n");
+ fprintf (dump_file, "-----------------------\n\n");
+
+ fprintf (dump_file, "data references (\n");
+ fprintf (dump_file, " reads: ");
+ print_isl_union_map (dump_file, reads);
+ fprintf (dump_file, " must_writes: ");
+ print_isl_union_map (dump_file, must_writes);
+ fprintf (dump_file, " may_writes: ");
+ print_isl_union_map (dump_file, may_writes);
+ fprintf (dump_file, " all_writes: ");
+ print_isl_union_map (dump_file, all_writes);
+ fprintf (dump_file, ")\n");
+ }
+
isl_union_map_compute_flow (isl_union_map_copy (reads),
isl_union_map_copy (must_writes),
isl_union_map_copy (may_writes),
isl_union_map *
scop_get_dependences (scop_p scop)
{
- isl_union_map *dependences;
-
- if (!scop->must_raw)
- compute_deps (scop, scop->pbbs,
- &scop->must_raw, &scop->may_raw,
- &scop->must_raw_no_source, &scop->may_raw_no_source,
- &scop->must_war, &scop->may_war,
- &scop->must_war_no_source, &scop->may_war_no_source,
- &scop->must_waw, &scop->may_waw,
- &scop->must_waw_no_source, &scop->may_waw_no_source);
-
- dependences = isl_union_map_copy (scop->must_raw);
- dependences = isl_union_map_union (dependences,
- isl_union_map_copy (scop->must_war));
- dependences = isl_union_map_union (dependences,
- isl_union_map_copy (scop->must_waw));
- dependences = isl_union_map_union (dependences,
- isl_union_map_copy (scop->may_raw));
- dependences = isl_union_map_union (dependences,
- isl_union_map_copy (scop->may_war));
- dependences = isl_union_map_union (dependences,
- isl_union_map_copy (scop->may_waw));
+ if (scop->dependence)
+ return scop->dependence;
+
+ /* The original dependence relations:
+ RAW are read after write dependences,
+ WAR are write after read dependences,
+ WAW are write after write dependences. */
+ isl_union_map *must_raw = NULL, *may_raw = NULL, *must_raw_no_source = NULL,
+ *may_raw_no_source = NULL, *must_war = NULL, *may_war = NULL,
+ *must_war_no_source = NULL, *may_war_no_source = NULL, *must_waw = NULL,
+ *may_waw = NULL, *must_waw_no_source = NULL, *may_waw_no_source = NULL;
+
+ compute_deps (scop, scop->pbbs,
+ &must_raw, &may_raw,
+ &must_raw_no_source, &may_raw_no_source,
+ &must_war, &may_war,
+ &must_war_no_source, &may_war_no_source,
+ &must_waw, &may_waw,
+ &must_waw_no_source, &may_waw_no_source);
+
+ isl_union_map *dependences = must_raw;
+ dependences = isl_union_map_union (dependences, must_war);
+ dependences = isl_union_map_union (dependences, must_waw);
+ dependences = isl_union_map_union (dependences, may_raw);
+ dependences = isl_union_map_union (dependences, may_war);
+ dependences = isl_union_map_union (dependences, may_waw);
+
+ if (dump_file)
+ {
+ fprintf (dump_file, "data dependences (\n");
+ print_isl_union_map (dump_file, dependences);
+ fprintf (dump_file, ")\n");
+ }
+
+ isl_union_map_free (must_raw_no_source);
+ isl_union_map_free (may_raw_no_source);
+ isl_union_map_free (must_war_no_source);
+ isl_union_map_free (may_war_no_source);
+ isl_union_map_free (must_waw_no_source);
+ isl_union_map_free (may_waw_no_source);
+ scop->dependence = dependences;
return dependences;
}
projects / gcc.git / blobdiff