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/* Gimple Represented as Polyhedra.

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

   Contributed by Sebastian Pop <sebastian.pop@inria.fr>

   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/>.  */

#ifndef GCC_GRAPHITE_PPL_H

#define GCC_GRAPHITE_PPL_H

#include "double-int.h"

#include "tree.h"

ppl_Polyhedron_t ppl_strip_loop (ppl_Polyhedron_t, ppl_dimension_type, int);

int ppl_lexico_compare_linear_expressions (ppl_Linear_Expression_t,

                                           ppl_Linear_Expression_t);

void ppl_print_polyhedron_matrix (FILE *, ppl_const_Polyhedron_t);

void ppl_print_powerset_matrix (FILE *, ppl_Pointset_Powerset_C_Polyhedron_t);

void debug_ppl_polyhedron_matrix (ppl_Polyhedron_t);

void debug_ppl_powerset_matrix (ppl_Pointset_Powerset_C_Polyhedron_t);

void ppl_print_linear_expr (FILE *, ppl_Linear_Expression_t);

void debug_ppl_linear_expr (ppl_Linear_Expression_t);

void ppl_read_polyhedron_matrix (ppl_Polyhedron_t *, FILE *);

void ppl_insert_dimensions (ppl_Polyhedron_t, int, int);

void ppl_insert_dimensions_pointset (ppl_Pointset_Powerset_C_Polyhedron_t, int,

                                     int);

void ppl_set_inhomogeneous_gmp (ppl_Linear_Expression_t, mpz_t);

void ppl_set_coef_gmp (ppl_Linear_Expression_t, ppl_dimension_type, mpz_t);

void ppl_max_for_le_pointset (ppl_Pointset_Powerset_C_Polyhedron_t,

                              ppl_Linear_Expression_t, mpz_t);

void ppl_min_for_le_pointset (ppl_Pointset_Powerset_C_Polyhedron_t,

                              ppl_Linear_Expression_t, mpz_t);

ppl_Constraint_t ppl_build_relation (int, int, int, int,

                                     enum ppl_enum_Constraint_Type);

void debug_gmp_value (mpz_t);

bool ppl_powerset_is_empty (ppl_Pointset_Powerset_C_Polyhedron_t);

/* Assigns to RES the value of the INTEGER_CST T.  */

static inline void

tree_int_to_gmp (tree t, mpz_t res)

{

  double_int di = tree_to_double_int (t);

  mpz_set_double_int (res, di, TYPE_UNSIGNED (TREE_TYPE (t)));

}

/* Converts a GMP constant VAL to a tree and returns it.  */

static inline tree

gmp_cst_to_tree (tree type, mpz_t val)

{

  tree t = type ? type : integer_type_node;

  mpz_t tmp;

  double_int di;

  mpz_init (tmp);

  mpz_set (tmp, val);

  di = mpz_get_double_int (t, tmp, true);

  mpz_clear (tmp);

  return double_int_to_tree (t, di);

}

/* Set the inhomogeneous term of E to the integer X.  */

static inline void

ppl_set_inhomogeneous (ppl_Linear_Expression_t e, int x)

{

  mpz_t v;

  mpz_init (v);

  mpz_set_si (v, x);

  ppl_set_inhomogeneous_gmp (e, v);

  mpz_clear (v);

}

/* Set the inhomogeneous term of E to the tree X.  */

static inline void

ppl_set_inhomogeneous_tree (ppl_Linear_Expression_t e, tree x)

{

  mpz_t v;

  mpz_init (v);

  tree_int_to_gmp (x, v);

  ppl_set_inhomogeneous_gmp (e, v);

  mpz_clear (v);

}

/* Set E[I] to integer X.  */

static inline void

ppl_set_coef (ppl_Linear_Expression_t e, ppl_dimension_type i, int x)

{

  mpz_t v;

  mpz_init (v);

  mpz_set_si (v, x);

  ppl_set_coef_gmp (e, i, v);

  mpz_clear (v);

}

/* Set E[I] to tree X.  */

static inline void

ppl_set_coef_tree (ppl_Linear_Expression_t e, ppl_dimension_type i, tree x)

{

  mpz_t v;

  mpz_init (v);

  tree_int_to_gmp (x, v);

  ppl_set_coef_gmp (e, i, v);

  mpz_clear (v);

}

/* Sets RES to the min of V1 and V2.  */

static inline void

value_min (mpz_t res, mpz_t v1, mpz_t v2)

{

  if (mpz_cmp (v1, v2) < 0)

    mpz_set (res, v1);

  else

    mpz_set (res, v2);

}

/* Sets RES to the max of V1 and V2.  */

static inline void

value_max (mpz_t res, mpz_t v1, mpz_t v2)

{

  if (mpz_cmp (v1, v2) < 0)

    mpz_set (res, v2);

  else

    mpz_set (res, v1);

}

/* Builds a new identity map for dimension DIM.  */

static inline ppl_dimension_type *

ppl_new_id_map (ppl_dimension_type dim)

{

  ppl_dimension_type *map, i;

  map = (ppl_dimension_type *) XNEWVEC (ppl_dimension_type, dim);

  for (i = 0; i < dim; i++)

    map[i] = i;

  return map;

}

/* Builds an interchange of dimensions A and B in MAP.  */

static inline void

ppl_interchange (ppl_dimension_type *map,

                 ppl_dimension_type a,

                 ppl_dimension_type b)

{

  map[a] = b;

  map[b] = a;

}

#endif