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/* Graphite polyhedral representation.

   Copyright (C) 2009, 2010 Free Software Foundation, Inc.

   Contributed by Konrad Trifunovic <konrad.trifunovic@gmail.com>

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/>.  */

#ifndef GCC_GRAPHITE_DEPENDENCES_H

#define GCC_GRAPHITE_DEPENDENCES_H

extern bool graphite_legal_transform (scop_p);

extern bool dependency_between_pbbs_p (poly_bb_p, poly_bb_p, int);

enum poly_dependence_kind {

  unknown_dependence,

  no_dependence,

  has_dependence

};

/* Represents a Polyhedral Data Dependence Relation.  */

typedef struct poly_ddr

{

  /* Source and sink data references of the dependence.  */

  poly_dr_p source, sink;

  /* Data dependence polyhedron.  */

  ppl_Pointset_Powerset_C_Polyhedron_t ddp;

  enum poly_dependence_kind kind;

  /* True when the dependence relation is for the original scattering.  */

  bool original_scattering_p;

} *poly_ddr_p;

#define PDDR_SOURCE(PDDR) (PDDR->source)

#define PDDR_SINK(PDDR) (PDDR->sink)

#define PDDR_DDP(PDDR) (PDDR->ddp)

#define PDDR_KIND(PDDR) (PDDR->kind)

#define PDDR_ORIGINAL_SCATTERING_P(PDDR) (PDDR->original_scattering_p)

extern int eq_poly_ddr_p (const void *, const void *);

extern hashval_t hash_poly_ddr_p (const void *);

extern void free_poly_ddr (void *);

extern void dot_deps (scop_p);

extern void dot_deps_stmt (scop_p);

extern void print_pddr (FILE *, poly_ddr_p);

extern void debug_pddr (poly_ddr_p);

#endif