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/* Graphite polyhedral representation.
Copyright (C) 2009-2015 Free Software Foundation, Inc.
Contributed by Sebastian Pop <sebastian.pop@amd.com> and
Tobias Grosser <grosser@fim.uni-passau.de>.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#ifdef HAVE_isl
#include <isl/constraint.h>
#include <isl/set.h>
#include <isl/map.h>
#include <isl/union_map.h>
#include <isl/constraint.h>
#include <isl/ilp.h>
#include <isl/aff.h>
#include <isl/val.h>
/* Since ISL-0.13, the extern is in val_gmp.h. */
#if !defined(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE) && defined(__cplusplus)
extern "C" {
#endif
#include <isl/val_gmp.h>
#if !defined(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE) && defined(__cplusplus)
}
#endif
#endif
#include "system.h"
#include "coretypes.h"
#include "diagnostic-core.h"
#include "hash-set.h"
#include "machmode.h"
#include "vec.h"
#include "double-int.h"
#include "input.h"
#include "alias.h"
#include "symtab.h"
#include "options.h"
#include "wide-int.h"
#include "inchash.h"
#include "tree.h"
#include "fold-const.h"
#include "predict.h"
#include "tm.h"
#include "hard-reg-set.h"
#include "input.h"
#include "function.h"
#include "dominance.h"
#include "cfg.h"
#include "basic-block.h"
#include "tree-ssa-alias.h"
#include "internal-fn.h"
#include "gimple-expr.h"
#include "is-a.h"
#include "gimple.h"
#include "gimple-iterator.h"
#include "tree-ssa-loop.h"
#include "dumpfile.h"
#include "gimple-pretty-print.h"
#include "cfgloop.h"
#include "tree-chrec.h"
#include "tree-data-ref.h"
#include "tree-scalar-evolution.h"
#include "sese.h"
#ifdef HAVE_isl
#include "graphite-poly.h"
#define OPENSCOP_MAX_STRING 256
/* Print to STDERR the GMP value VAL. */
DEBUG_FUNCTION void
debug_gmp_value (mpz_t val)
{
gmp_fprintf (stderr, "%Zd", val);
}
/* Return the maximal loop depth in SCOP. */
int
scop_max_loop_depth (scop_p scop)
{
int i;
poly_bb_p pbb;
int max_nb_loops = 0;
FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
{
int nb_loops = pbb_dim_iter_domain (pbb);
if (max_nb_loops < nb_loops)
max_nb_loops = nb_loops;
}
return max_nb_loops;
}
/* Prints to FILE the scattering function of PBB, at some VERBOSITY
level. */
static void
print_scattering_function_1 (FILE *file, poly_bb_p pbb, int verbosity)
{
graphite_dim_t i;
if (verbosity > 0)
{
fprintf (file, "# scattering bb_%d (\n", pbb_index (pbb));
fprintf (file, "#eq");
for (i = 0; i < pbb_nb_scattering_transform (pbb); i++)
fprintf (file, " s%d", (int) i);
for (i = 0; i < pbb_nb_local_vars (pbb); i++)
fprintf (file, " lv%d", (int) i);
for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
fprintf (file, " i%d", (int) i);
for (i = 0; i < pbb_nb_params (pbb); i++)
fprintf (file, " p%d", (int) i);
fprintf (file, " cst\n");
}
fprintf (file, "isl\n");
print_isl_map (file, pbb->transformed ? pbb->transformed : pbb->schedule);
if (verbosity > 0)
fprintf (file, "#)\n");
}
/* Prints to FILE the scattering function of PBB, at some VERBOSITY
level. */
void
print_scattering_function (FILE *file, poly_bb_p pbb, int verbosity)
{
if (!PBB_TRANSFORMED (pbb))
return;
if (pbb->schedule || pbb->transformed)
{
if (verbosity > 0)
fprintf (file, "# Scattering function is provided\n");
fprintf (file, "1\n");
}
else
{
if (verbosity > 0)
fprintf (file, "# Scattering function is not provided\n");
fprintf (file, "0\n");
return;
}
print_scattering_function_1 (file, pbb, verbosity);
if (verbosity > 0)
fprintf (file, "# Scattering names are not provided\n");
fprintf (file, "0\n");
}
/* Prints to FILE the iteration domain of PBB, at some VERBOSITY
level. */
void
print_iteration_domain (FILE *file, poly_bb_p pbb, int verbosity)
{
print_pbb_domain (file, pbb, verbosity);
}
/* Prints to FILE the scattering functions of every PBB of SCOP. */
void
print_scattering_functions (FILE *file, scop_p scop, int verbosity)
{
int i;
poly_bb_p pbb;
FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
print_scattering_function (file, pbb, verbosity);
}
/* Prints to FILE the iteration domains of every PBB of SCOP, at some
VERBOSITY level. */
void
print_iteration_domains (FILE *file, scop_p scop, int verbosity)
{
int i;
poly_bb_p pbb;
FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
print_iteration_domain (file, pbb, verbosity);
}
/* Prints to STDERR the scattering function of PBB, at some VERBOSITY
level. */
DEBUG_FUNCTION void
debug_scattering_function (poly_bb_p pbb, int verbosity)
{
print_scattering_function (stderr, pbb, verbosity);
}
/* Prints to STDERR the iteration domain of PBB, at some VERBOSITY
level. */
DEBUG_FUNCTION void
debug_iteration_domain (poly_bb_p pbb, int verbosity)
{
print_iteration_domain (stderr, pbb, verbosity);
}
/* Prints to STDERR the scattering functions of every PBB of SCOP, at
some VERBOSITY level. */
DEBUG_FUNCTION void
debug_scattering_functions (scop_p scop, int verbosity)
{
print_scattering_functions (stderr, scop, verbosity);
}
/* Prints to STDERR the iteration domains of every PBB of SCOP, at
some VERBOSITY level. */
DEBUG_FUNCTION void
debug_iteration_domains (scop_p scop, int verbosity)
{
print_iteration_domains (stderr, scop, verbosity);
}
/* Apply graphite transformations to all the basic blocks of SCOP. */
bool
apply_poly_transforms (scop_p scop)
{
bool transform_done = false;
/* Generate code even if we did not apply any real transformation.
This also allows to check the performance for the identity
transformation: GIMPLE -> GRAPHITE -> GIMPLE
Keep in mind that CLooG optimizes in control, so the loop structure
may change, even if we only use -fgraphite-identity. */
if (flag_graphite_identity)
transform_done = true;
if (flag_loop_parallelize_all)
transform_done = true;
if (flag_loop_block)
transform_done |= scop_do_block (scop);
else
{
if (flag_loop_strip_mine)
transform_done |= scop_do_strip_mine (scop, 0);
if (flag_loop_interchange)
transform_done |= scop_do_interchange (scop);
}
/* This pass needs to be run at the final stage, as it does not
update the lst. */
if (flag_loop_optimize_isl || flag_loop_unroll_jam)
transform_done |= optimize_isl (scop);
return transform_done;
}
/* Create a new polyhedral data reference and add it to PBB. It is
defined by its ACCESSES, its TYPE, and the number of subscripts
NB_SUBSCRIPTS. */
void
new_poly_dr (poly_bb_p pbb, int dr_base_object_set,
enum poly_dr_type type, void *cdr, graphite_dim_t nb_subscripts,
isl_map *acc, isl_set *extent)
{
static int id = 0;
poly_dr_p pdr = XNEW (struct poly_dr);
PDR_ID (pdr) = id++;
PDR_BASE_OBJECT_SET (pdr) = dr_base_object_set;
PDR_NB_REFS (pdr) = 1;
PDR_PBB (pdr) = pbb;
pdr->accesses = acc;
pdr->extent = extent;
PDR_TYPE (pdr) = type;
PDR_CDR (pdr) = cdr;
PDR_NB_SUBSCRIPTS (pdr) = nb_subscripts;
PBB_DRS (pbb).safe_push (pdr);
}
/* Free polyhedral data reference PDR. */
void
free_poly_dr (poly_dr_p pdr)
{
isl_map_free (pdr->accesses);
isl_set_free (pdr->extent);
XDELETE (pdr);
}
/* Create a new polyhedral black box. */
poly_bb_p
new_poly_bb (scop_p scop, void *black_box)
{
poly_bb_p pbb = XNEW (struct poly_bb);
pbb->domain = NULL;
pbb->schedule = NULL;
pbb->transformed = NULL;
pbb->saved = NULL;
pbb->map_sepclass = NULL;
PBB_SCOP (pbb) = scop;
pbb_set_black_box (pbb, black_box);
PBB_TRANSFORMED (pbb) = NULL;
PBB_SAVED (pbb) = NULL;
PBB_ORIGINAL (pbb) = NULL;
PBB_DRS (pbb).create (3);
PBB_IS_REDUCTION (pbb) = false;
GBB_PBB ((gimple_bb_p) black_box) = pbb;
return pbb;
}
/* Free polyhedral black box. */
void
free_poly_bb (poly_bb_p pbb)
{
int i;
poly_dr_p pdr;
isl_set_free (pbb->domain);
isl_map_free (pbb->schedule);
isl_map_free (pbb->transformed);
isl_map_free (pbb->saved);
if (PBB_DRS (pbb).exists ())
FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
free_poly_dr (pdr);
PBB_DRS (pbb).release ();
XDELETE (pbb);
}
static void
print_pdr_access_layout (FILE *file, poly_bb_p pbb, poly_dr_p pdr)
{
graphite_dim_t i;
fprintf (file, "# eq");
fprintf (file, " alias");
for (i = 0; i < PDR_NB_SUBSCRIPTS (pdr); i++)
fprintf (file, " sub%d", (int) i);
for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
fprintf (file, " i%d", (int) i);
for (i = 0; i < pbb_nb_params (pbb); i++)
fprintf (file, " p%d", (int) i);
fprintf (file, " cst\n");
}
/* Prints to FILE the polyhedral data reference PDR, at some VERBOSITY
level. */
void
print_pdr (FILE *file, poly_dr_p pdr, int verbosity)
{
if (verbosity > 1)
{
fprintf (file, "# pdr_%d (", PDR_ID (pdr));
switch (PDR_TYPE (pdr))
{
case PDR_READ:
fprintf (file, "read \n");
break;
case PDR_WRITE:
fprintf (file, "write \n");
break;
case PDR_MAY_WRITE:
fprintf (file, "may_write \n");
break;
default:
gcc_unreachable ();
}
dump_data_reference (file, (data_reference_p) PDR_CDR (pdr));
}
if (verbosity > 0)
{
fprintf (file, "# data accesses (\n");
print_pdr_access_layout (file, PDR_PBB (pdr), pdr);
}
/* XXX isl dump accesses/subscripts */
if (verbosity > 0)
fprintf (file, "#)\n");
if (verbosity > 1)
fprintf (file, "#)\n");
}
/* Prints to STDERR the polyhedral data reference PDR, at some
VERBOSITY level. */
DEBUG_FUNCTION void
debug_pdr (poly_dr_p pdr, int verbosity)
{
print_pdr (stderr, pdr, verbosity);
}
/* Creates a new SCOP containing REGION. */
scop_p
new_scop (void *region)
{
scop_p scop = XNEW (struct scop);
scop->context = NULL;
scop->must_raw = NULL;
scop->may_raw = NULL;
scop->must_raw_no_source = NULL;
scop->may_raw_no_source = NULL;
scop->must_war = NULL;
scop->may_war = NULL;
scop->must_war_no_source = NULL;
scop->may_war_no_source = NULL;
scop->must_waw = NULL;
scop->may_waw = NULL;
scop->must_waw_no_source = NULL;
scop->may_waw_no_source = NULL;
scop_set_region (scop, region);
SCOP_BBS (scop).create (3);
SCOP_ORIGINAL_SCHEDULE (scop) = NULL;
SCOP_TRANSFORMED_SCHEDULE (scop) = NULL;
SCOP_SAVED_SCHEDULE (scop) = NULL;
POLY_SCOP_P (scop) = false;
return scop;
}
/* Deletes SCOP. */
void
free_scop (scop_p scop)
{
int i;
poly_bb_p pbb;
FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
free_poly_bb (pbb);
SCOP_BBS (scop).release ();
isl_set_free (scop->context);
isl_union_map_free (scop->must_raw);
isl_union_map_free (scop->may_raw);
isl_union_map_free (scop->must_raw_no_source);
isl_union_map_free (scop->may_raw_no_source);
isl_union_map_free (scop->must_war);
isl_union_map_free (scop->may_war);
isl_union_map_free (scop->must_war_no_source);
isl_union_map_free (scop->may_war_no_source);
isl_union_map_free (scop->must_waw);
isl_union_map_free (scop->may_waw);
isl_union_map_free (scop->must_waw_no_source);
isl_union_map_free (scop->may_waw_no_source);
free_lst (SCOP_ORIGINAL_SCHEDULE (scop));
free_lst (SCOP_TRANSFORMED_SCHEDULE (scop));
free_lst (SCOP_SAVED_SCHEDULE (scop));
XDELETE (scop);
}
/* Print to FILE the domain of PBB in OpenScop format, at some VERBOSITY
level. */
static void
openscop_print_pbb_domain (FILE *file, poly_bb_p pbb, int verbosity)
{
graphite_dim_t i;
gimple_bb_p gbb = PBB_BLACK_BOX (pbb);
if (!pbb->domain)
return;
if (verbosity > 0)
{
fprintf (file, "\n# Iteration domain of bb_%d (\n", GBB_BB (gbb)->index);
fprintf (file, "#eq");
for (i = 0; i < pbb_dim_iter_domain (pbb); i++)
fprintf (file, " i%d", (int) i);
for (i = 0; i < pbb_nb_params (pbb); i++)
fprintf (file, " p%d", (int) i);
fprintf (file, " cst\n");
}
fprintf (file, "XXX isl\n");
if (verbosity > 0)
fprintf (file, "#)\n");
}
/* Print to FILE the domain of PBB, at some VERBOSITY level. */
void
print_pbb_domain (FILE *file, poly_bb_p pbb, int verbosity ATTRIBUTE_UNUSED)
{
print_isl_set (file, pbb->domain);
}
/* Dump the cases of a graphite basic block GBB on FILE. */
static void
dump_gbb_cases (FILE *file, gimple_bb_p gbb)
{
int i;
gimple stmt;
vec<gimple> cases;
if (!gbb)
return;
cases = GBB_CONDITION_CASES (gbb);
if (cases.is_empty ())
return;
fprintf (file, "# cases bb_%d (\n", GBB_BB (gbb)->index);
FOR_EACH_VEC_ELT (cases, i, stmt)
{
fprintf (file, "# ");
print_gimple_stmt (file, stmt, 0, 0);
}
fprintf (file, "#)\n");
}
/* Dump conditions of a graphite basic block GBB on FILE. */
static void
dump_gbb_conditions (FILE *file, gimple_bb_p gbb)
{
int i;
gimple stmt;
vec<gimple> conditions;
if (!gbb)
return;
conditions = GBB_CONDITIONS (gbb);
if (conditions.is_empty ())
return;
fprintf (file, "# conditions bb_%d (\n", GBB_BB (gbb)->index);
FOR_EACH_VEC_ELT (conditions, i, stmt)
{
fprintf (file, "# ");
print_gimple_stmt (file, stmt, 0, 0);
}
fprintf (file, "#)\n");
}
/* Print to FILE all the data references of PBB, at some VERBOSITY
level. */
void
print_pdrs (FILE *file, poly_bb_p pbb, int verbosity)
{
int i;
poly_dr_p pdr;
int nb_reads = 0;
int nb_writes = 0;
if (PBB_DRS (pbb).length () == 0)
{
if (verbosity > 0)
fprintf (file, "# Access informations are not provided\n");\
fprintf (file, "0\n");
return;
}
if (verbosity > 1)
fprintf (file, "# Data references (\n");
if (verbosity > 0)
fprintf (file, "# Access informations are provided\n");
fprintf (file, "1\n");
FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
if (PDR_TYPE (pdr) == PDR_READ)
nb_reads++;
else
nb_writes++;
if (verbosity > 1)
fprintf (file, "# Read data references (\n");
if (verbosity > 0)
fprintf (file, "# Read access informations\n");
fprintf (file, "%d\n", nb_reads);
FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
if (PDR_TYPE (pdr) == PDR_READ)
print_pdr (file, pdr, verbosity);
if (verbosity > 1)
fprintf (file, "#)\n");
if (verbosity > 1)
fprintf (file, "# Write data references (\n");
if (verbosity > 0)
fprintf (file, "# Write access informations\n");
fprintf (file, "%d\n", nb_writes);
FOR_EACH_VEC_ELT (PBB_DRS (pbb), i, pdr)
if (PDR_TYPE (pdr) != PDR_READ)
print_pdr (file, pdr, verbosity);
if (verbosity > 1)
fprintf (file, "#)\n");
if (verbosity > 1)
fprintf (file, "#)\n");
}
/* Print to STDERR all the data references of PBB. */
DEBUG_FUNCTION void
debug_pdrs (poly_bb_p pbb, int verbosity)
{
print_pdrs (stderr, pbb, verbosity);
}
/* Print to FILE the body of PBB, at some VERBOSITY level.
If statement_body_provided is false statement body is not printed. */
static void
print_pbb_body (FILE *file, poly_bb_p pbb, int verbosity,
bool statement_body_provided)
{
if (verbosity > 1)
fprintf (file, "# Body (\n");
if (!statement_body_provided)
{
if (verbosity > 0)
fprintf (file, "# Statement body is not provided\n");
fprintf (file, "0\n");
if (verbosity > 1)
fprintf (file, "#)\n");
return;
}
if (verbosity > 0)
fprintf (file, "# Statement body is provided\n");
fprintf (file, "1\n");
if (verbosity > 0)
fprintf (file, "# Original iterator names\n# Iterator names are not provided yet.\n");
if (verbosity > 0)
fprintf (file, "# Statement body\n");
fprintf (file, "{\n");
dump_bb (file, pbb_bb (pbb), 0, 0);
fprintf (file, "}\n");
if (verbosity > 1)
fprintf (file, "#)\n");
}
/* Print to FILE the domain and scattering function of PBB, at some
VERBOSITY level. */
void
print_pbb (FILE *file, poly_bb_p pbb, int verbosity)
{
if (verbosity > 1)
{
fprintf (file, "# pbb_%d (\n", pbb_index (pbb));
dump_gbb_conditions (file, PBB_BLACK_BOX (pbb));
dump_gbb_cases (file, PBB_BLACK_BOX (pbb));
}
openscop_print_pbb_domain (file, pbb, verbosity);
print_scattering_function (file, pbb, verbosity);
print_pdrs (file, pbb, verbosity);
print_pbb_body (file, pbb, verbosity, false);
if (verbosity > 1)
fprintf (file, "#)\n");
}
/* Print to FILE the parameters of SCOP, at some VERBOSITY level. */
void
print_scop_params (FILE *file, scop_p scop, int verbosity)
{
int i;
tree t;
if (verbosity > 1)
fprintf (file, "# parameters (\n");
if (SESE_PARAMS (SCOP_REGION (scop)).length ())
{
if (verbosity > 0)
fprintf (file, "# Parameter names are provided\n");
fprintf (file, "1\n");
if (verbosity > 0)
fprintf (file, "# Parameter names\n");
}
else
{
if (verbosity > 0)
fprintf (file, "# Parameter names are not provided\n");
fprintf (file, "0\n");
}
FOR_EACH_VEC_ELT (SESE_PARAMS (SCOP_REGION (scop)), i, t)
{
print_generic_expr (file, t, 0);
fprintf (file, " ");
}
fprintf (file, "\n");
if (verbosity > 1)
fprintf (file, "#)\n");
}
/* Print to FILE the context of SCoP in OpenScop format, at some VERBOSITY
level. */
static void
openscop_print_scop_context (FILE *file, scop_p scop, int verbosity)
{
graphite_dim_t i;
if (verbosity > 0)
{
fprintf (file, "# Context (\n");
fprintf (file, "#eq");
for (i = 0; i < scop_nb_params (scop); i++)
fprintf (file, " p%d", (int) i);
fprintf (file, " cst\n");
}
if (scop->context)
/* XXX isl print context */
fprintf (file, "XXX isl\n");
else
fprintf (file, "0 %d 0 0 0 %d\n", (int) scop_nb_params (scop) + 2,
(int) scop_nb_params (scop));
if (verbosity > 0)
fprintf (file, "# )\n");
}
/* Print to FILE the context of SCoP, at some VERBOSITY level. */
void
print_scop_context (FILE *file, scop_p scop, int verbosity)
{
graphite_dim_t i;
if (verbosity > 0)
{
fprintf (file, "# Context (\n");
fprintf (file, "#eq");
for (i = 0; i < scop_nb_params (scop); i++)
fprintf (file, " p%d", (int) i);
fprintf (file, " cst\n");
}
if (scop->context)
print_isl_set (file, scop->context);
else
fprintf (file, "no isl context %d\n", (int) scop_nb_params (scop) + 2);
if (verbosity > 0)
fprintf (file, "# )\n");
}
/* Print to FILE the SCOP, at some VERBOSITY level. */
void
print_scop (FILE *file, scop_p scop, int verbosity)
{
int i;
poly_bb_p pbb;
fprintf (file, "SCoP 1\n#(\n");
fprintf (file, "# Language\nGimple\n");
openscop_print_scop_context (file, scop, verbosity);
print_scop_params (file, scop, verbosity);
if (verbosity > 0)
fprintf (file, "# Number of statements\n");
fprintf (file, "%d\n", SCOP_BBS (scop).length ());
FOR_EACH_VEC_ELT (SCOP_BBS (scop), i, pbb)
print_pbb (file, pbb, verbosity);
if (verbosity > 1)
{
fprintf (file, "# original_lst (\n");
print_lst (file, SCOP_ORIGINAL_SCHEDULE (scop), 0);
fprintf (file, "\n#)\n");
fprintf (file, "# transformed_lst (\n");
print_lst (file, SCOP_TRANSFORMED_SCHEDULE (scop), 0);
fprintf (file, "\n#)\n");
}
fprintf (file, "#)\n");
}
/* Print to STDERR the domain of PBB, at some VERBOSITY level. */
DEBUG_FUNCTION void
debug_pbb_domain (poly_bb_p pbb, int verbosity)
{
print_pbb_domain (stderr, pbb, verbosity);
}
/* Print to FILE the domain and scattering function of PBB, at some
VERBOSITY level. */
DEBUG_FUNCTION void
debug_pbb (poly_bb_p pbb, int verbosity)
{
print_pbb (stderr, pbb, verbosity);
}
/* Print to STDERR the context of SCOP, at some VERBOSITY level. */
DEBUG_FUNCTION void
debug_scop_context (scop_p scop, int verbosity)
{
print_scop_context (stderr, scop, verbosity);
}
/* Print to STDERR the SCOP, at some VERBOSITY level. */
DEBUG_FUNCTION void
debug_scop (scop_p scop, int verbosity)
{
print_scop (stderr, scop, verbosity);
}
/* Print to STDERR the parameters of SCOP, at some VERBOSITY
level. */
DEBUG_FUNCTION void
debug_scop_params (scop_p scop, int verbosity)
{
print_scop_params (stderr, scop, verbosity);
}
extern isl_ctx *the_isl_ctx;
void
print_isl_set (FILE *f, isl_set *set)
{
isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
p = isl_printer_print_set (p, set);
isl_printer_free (p);
}
DEBUG_FUNCTION void
debug_isl_set (isl_set *set)
{
print_isl_set (stderr, set);
}
void
print_isl_map (FILE *f, isl_map *map)
{
isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
p = isl_printer_print_map (p, map);
isl_printer_free (p);
}
DEBUG_FUNCTION void
debug_isl_map (isl_map *map)
{
print_isl_map (stderr, map);
}
void
print_isl_aff (FILE *f, isl_aff *aff)
{
isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
p = isl_printer_print_aff (p, aff);
isl_printer_free (p);
}
DEBUG_FUNCTION void
debug_isl_aff (isl_aff *aff)
{
print_isl_aff (stderr, aff);
}
void
print_isl_constraint (FILE *f, isl_constraint *c)
{
isl_printer *p = isl_printer_to_file (the_isl_ctx, f);
p = isl_printer_print_constraint (p, c);
isl_printer_free (p);
}
DEBUG_FUNCTION void
debug_isl_constraint (isl_constraint *c)
{
print_isl_constraint (stderr, c);
}
/* Returns the number of iterations RES of the loop around PBB at
time(scattering) dimension TIME_DEPTH. */
void
pbb_number_of_iterations_at_time (poly_bb_p pbb,
graphite_dim_t time_depth,
mpz_t res)
{
isl_set *transdomain;
isl_space *dc;
isl_aff *aff;
isl_val *isllb, *islub;
/* Map the iteration domain through the current scatter, and work
on the resulting set. */
transdomain = isl_set_apply (isl_set_copy (pbb->domain),
isl_map_copy (pbb->transformed));
/* Select the time_depth' dimension via an affine expression. */
dc = isl_set_get_space (transdomain);
aff = isl_aff_zero_on_domain (isl_local_space_from_space (dc));
aff = isl_aff_set_coefficient_si (aff, isl_dim_in, time_depth, 1);
/* And find the min/max for that function. */
/* XXX isl check results? */
isllb = isl_set_min_val (transdomain, aff);
islub = isl_set_max_val (transdomain, aff);
islub = isl_val_sub (islub, isllb);
islub = isl_val_add_ui (islub, 1);
isl_val_get_num_gmp (islub, res);
isl_val_free (islub);
isl_aff_free (aff);
isl_set_free (transdomain);
}
/* Translates LOOP to LST. */
static lst_p
loop_to_lst (loop_p loop, vec<poly_bb_p> bbs, int *i)
{
poly_bb_p pbb;
vec<lst_p> seq;
seq.create (5);
for (; bbs.iterate (*i, &pbb); (*i)++)
{
lst_p stmt;
basic_block bb = GBB_BB (PBB_BLACK_BOX (pbb));
if (bb->loop_father == loop)
stmt = new_lst_stmt (pbb);
else if (flow_bb_inside_loop_p (loop, bb))
{
loop_p next = loop->inner;
while (next && !flow_bb_inside_loop_p (next, bb))
next = next->next;
stmt = loop_to_lst (next, bbs, i);
}
else
{
(*i)--;
return new_lst_loop (seq);
}
seq.safe_push (stmt);
}
return new_lst_loop (seq);
}
/* Reads the original scattering of the SCOP and returns an LST
representing it. */
void
scop_to_lst (scop_p scop)
{
lst_p res;
int i, n = SCOP_BBS (scop).length ();
vec<lst_p> seq;
seq.create (5);
sese region = SCOP_REGION (scop);
for (i = 0; i < n; i++)
{
poly_bb_p pbb = SCOP_BBS (scop)[i];
loop_p loop = outermost_loop_in_sese (region, GBB_BB (PBB_BLACK_BOX (pbb)));
if (loop_in_sese_p (loop, region))
res = loop_to_lst (loop, SCOP_BBS (scop), &i);
else
res = new_lst_stmt (pbb);
seq.safe_push (res);
}
res = new_lst_loop (seq);
SCOP_ORIGINAL_SCHEDULE (scop) = res;
SCOP_TRANSFORMED_SCHEDULE (scop) = copy_lst (res);
}
/* Print to FILE on a new line COLUMN white spaces. */
static void
lst_indent_to (FILE *file, int column)
{
int i;
if (column > 0)
fprintf (file, "\n#");
for (i = 0; i < column; i++)
fprintf (file, " ");
}
/* Print LST to FILE with INDENT spaces of indentation. */
void
print_lst (FILE *file, lst_p lst, int indent)
{
if (!lst)
return;
lst_indent_to (file, indent);
if (LST_LOOP_P (lst))
{
int i;
lst_p l;
if (LST_LOOP_FATHER (lst))
fprintf (file, "%d (loop", lst_dewey_number (lst));
else
fprintf (file, "#(root");
FOR_EACH_VEC_ELT (LST_SEQ (lst), i, l)
print_lst (file, l, indent + 2);
fprintf (file, ")");
}
else
fprintf (file, "%d stmt_%d", lst_dewey_number (lst), pbb_index (LST_PBB (lst)));
}
/* Print LST to STDERR. */
DEBUG_FUNCTION void
debug_lst (lst_p lst)
{
print_lst (stderr, lst, 0);
}
/* Pretty print to FILE the loop statement tree LST in DOT format. */
static void
dot_lst_1 (FILE *file, lst_p lst)
{
if (!lst)
return;
if (LST_LOOP_P (lst))
{
int i;
lst_p l;
if (!LST_LOOP_FATHER (lst))
fprintf (file, "L -> L_%d_%d\n",
lst_depth (lst),
lst_dewey_number (lst));
else
fprintf (file, "L_%d_%d -> L_%d_%d\n",
lst_depth (LST_LOOP_FATHER (lst)),
lst_dewey_number (LST_LOOP_FATHER (lst)),
lst_depth (lst),
lst_dewey_number (lst));
FOR_EACH_VEC_ELT (LST_SEQ (lst), i, l)
dot_lst_1 (file, l);
}
else
fprintf (file, "L_%d_%d -> S_%d\n",
lst_depth (LST_LOOP_FATHER (lst)),
lst_dewey_number (LST_LOOP_FATHER (lst)),
pbb_index (LST_PBB (lst)));
}
/* Display the LST using dotty. */
DEBUG_FUNCTION void
dot_lst (lst_p lst)
{
/* When debugging, enable the following code. This cannot be used
in production compilers because it calls "system". */
#if 0
FILE *stream = fopen ("/tmp/lst.dot", "w");
gcc_assert (stream);
fputs ("digraph all {\n", stream);
dot_lst_1 (stream, lst);
fputs ("}\n\n", stream);
fclose (stream);
system ("dotty /tmp/lst.dot &");
#else
fputs ("digraph all {\n", stderr);
dot_lst_1 (stderr, lst);
fputs ("}\n\n", stderr);
#endif
}
/* Reverse the loop around PBB at level DEPTH. */
isl_map *
reverse_loop_at_level (poly_bb_p pbb, int depth)
{
unsigned i, depth_dim = psct_dynamic_dim (pbb, depth);
isl_space *d = isl_map_get_space (pbb->transformed);
isl_space *d1 = isl_space_range (d);
unsigned n = isl_space_dim (d1, isl_dim_out);
isl_space *d2 = isl_space_add_dims (d1, isl_dim_in, n);
isl_map *x = isl_map_universe (isl_space_copy (d2));
isl_constraint *c = isl_equality_alloc (isl_local_space_from_space (d2));
for (i = 0; i < n; i++)
if (i != depth_dim)
x = isl_map_equate (x, isl_dim_in, i, isl_dim_out, i);
c = isl_constraint_set_coefficient_si (c, isl_dim_in, depth_dim, 1);
c = isl_constraint_set_coefficient_si (c, isl_dim_out, depth_dim, 1);
x = isl_map_add_constraint (x, c);
return x;
}
/* Reverse the loop at level DEPTH for all the PBBS. */
isl_union_map *
reverse_loop_for_pbbs (scop_p scop, vec<poly_bb_p> pbbs, int depth)
{
poly_bb_p pbb;
int i;
isl_space *space = isl_space_from_domain (isl_set_get_space (scop->context));
isl_union_map *res = isl_union_map_empty (space);
for (i = 0; pbbs.iterate (i, &pbb); i++)
res = isl_union_map_add_map (res, reverse_loop_at_level (pbb, depth));
return res;
}
#endif