include/osl/relation.h

   1
   2     /*+-----------------------------------------------------------------**
   3      **                       OpenScop Library                          **
   4      **-----------------------------------------------------------------**
   5      **                          relation.h                             **
   6      **-----------------------------------------------------------------**
   7      **                   First version: 30/04/2008                     **
   8      **-----------------------------------------------------------------**
   9
  10
  11  *****************************************************************************
  12  * OpenScop: Structures and formats for polyhedral tools to talk together    *
  13  *****************************************************************************
  14  *    ,___,,_,__,,__,,__,,__,,_,__,,_,__,,__,,___,_,__,,_,__,                *
  15  *    /   / /  //  //  //  // /   / /  //  //   / /  // /  /|,_,             *
  16  *   /   / /  //  //  //  // /   / /  //  //   / /  // /  / / /\             *
  17  *  |~~~|~|~~~|~~~|~~~|~~~|~|~~~|~|~~~|~~~|~~~|~|~~~|~|~~~|/_/  \            *
  18  *  | G |C| P | = | L | P |=| = |C| = | = | = |=| = |=| C |\  \ /\           *
  19  *  | R |l| o | = | e | l |=| = |a| = | = | = |=| = |=| L | \# \ /\          *
  20  *  | A |a| l | = | t | u |=| = |n| = | = | = |=| = |=| o | |\# \  \         *
  21  *  | P |n| l | = | s | t |=| = |d| = | = | = | |   |=| o | | \# \  \        *
  22  *  | H | | y |   | e | o | | = |l|   |   | = | |   | | G | |  \  \  \       *
  23  *  | I | |   |   | e |   | |   | |   |   |   | |   | |   | |   \  \  \      *
  24  *  | T | |   |   |   |   | |   | |   |   |   | |   | |   | |    \  \  \     *
  25  *  | E | |   |   |   |   | |   | |   |   |   | |   | |   | |     \  \  \    *
  26  *  | * |*| * | * | * | * |*| * |*| * | * | * |*| * |*| * | /      \* \  \   *
  27  *  | O |p| e | n | S | c |o| p |-| L | i | b |r| a |r| y |/        \  \ /   *
  28  *  '---'-'---'---'---'---'-'---'-'---'---'---'-'---'-'---'          '--'    *
  29  *                                                                           *
  30  * Copyright (C) 2008 University Paris-Sud 11 and INRIA                      *
  31  *                                                                           *
  32  * (3-clause BSD license)                                                    *
  33  * Redistribution and use in source  and binary forms, with or without       *
  34  * modification, are permitted provided that the following conditions        *
  35  * are met:                                                                  *
  36  *                                                                           *
  37  * 1. Redistributions of source code must retain the above copyright notice, *
  38  *    this list of conditions and the following disclaimer.                  *
  39  * 2. Redistributions in binary form must reproduce the above copyright      *
  40  *    notice, this list of conditions and the following disclaimer in the    *
  41  *    documentation and/or other materials provided with the distribution.   *
  42  * 3. The name of the author may not be used to endorse or promote products  *
  43  *    derived from this software without specific prior written permission.  *
  44  *                                                                           *
  45  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR      *
  46  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES *
  47  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.   *
  48  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,          *
  49  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT  *
  50  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, *
  51  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY     *
  52  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT       *
  53  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF  *
  54  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.         *
  55  *                                                                           *
  56  * OpenScop Library, a library to manipulate OpenScop formats and data       *
  57  * structures. Written by:                                                   *
  58  * Cedric Bastoul     <Cedric.Bastoul@u-psud.fr> and                         *
  59  * Louis-Noel Pouchet <Louis-Noel.pouchet@inria.fr>                          *
  60  *                                                                           *
  61  *****************************************************************************/
  62
  63
  64 #ifndef OSL_RELATION_H
  65 # define OSL_RELATION_H
  66
  67 # include <stdio.h>
  68 # include <osl/macros.h>
  69 # include <osl/int.h>
  70 # include <osl/util.h>
  71 # include <osl/vector.h>
  72 # include <osl/strings.h>
  73 # include <osl/names.h>
  74
  75
  76 # if defined(__cplusplus)
  77 extern "C"
  78   {
  79 # endif
  80
  81
  82 /**
  83  * The osl_relation_t structure stores a union of relations. It is a
  84  * NULL-terminated linked list of relations. Each relation is described
  85  * using a matrix where each row represents a linear constraint. The entries
  86  * of each row are organised in the following order:
  87  * - An equality/inequality tag: 0 means the row corresponds to an
  88  *   equality constraint == 0, 1 means it is an inequality >= 0.
  89  * - The coefficients of the output dimensions.
  90  * - The coefficients of the input dimensions (0 for a set).
  91  * - The coefficients of the local (existentially quantified) dimensions.
  92  * - The coefficients of the parameters.
  93  * - The coefficient of the constant.
  94  * Thus we have the following invariant: nb_columns =
  95  * 1 + nb_output_dims + nb_input_dims + dims + nb_parameters + 1.
  96  * Moreover we use the following conventions:
  97  * - Sets (e.g., iteration domains) are the images of relations with a
  98  *   zero-dimensional domain, hence the number of input dimensions is 0.
  99  * - The first output dimension of any access relations corresponds to
 100  *   the name of the array.
 101  * The type field may provide some semantics about the relation, it may be:
 102  * - Undefined : OSL_UNDEFINED,
 103  * - An iteration domain : OSL_TYPE_DOMAIN,
 104  * - A scattering relation : OSL_TYPE_SCATTERING,
 105  * - An access relation : OSL_TYPE_ACCESS.
 106  */
 107 struct osl_relation {
 108   int type;                   /**< Semantics about the relation */
 109   int precision;              /**< Precision of relation matrix elements*/
 110   int nb_rows;                /**< Number of rows */
 111   int nb_columns;             /**< Number of columns */
 112   int nb_output_dims;         /**< Number of output dimensions */
 113   int nb_input_dims;          /**< Number of input dimensions */
 114   int nb_local_dims;          /**< Number of local (existentially
 115                                    quantified) dimensions */
 116   int nb_parameters;          /**< Number of parameters */
 117   void ** m;                  /**< An array of pointers to the beginning
 118                                    of each row of the relation matrix */
 119   struct osl_relation * next; /**< Pointer to the next relation in the
 120                                    union of relations (NULL if none) */
 121 };
 122 typedef struct osl_relation   osl_relation_t;
 123 typedef struct osl_relation * osl_relation_p;
 124
 125
 126 /*+***************************************************************************
 127  *                          Structure display function                       *
 128  *****************************************************************************/
 129 void           osl_relation_idump(FILE *, osl_relation_p, int);
 130 void           osl_relation_dump(FILE *, osl_relation_p);
 131 char *         osl_relation_expression(osl_relation_p relation,
 132                                        int row, osl_names_p names);
 133 void           osl_relation_print(FILE *, osl_relation_p);
 134
 135
 136 /*****************************************************************************
 137  *                               Reading function                            *
 138  *****************************************************************************/
 139 osl_relation_p osl_relation_read(FILE *);
 140 osl_relation_p osl_relation_read_arrays(FILE *, char ***, int *);
 141
 142
 143 /*+***************************************************************************
 144  *                    Memory allocation/deallocation function                *
 145  *****************************************************************************/
 146 osl_relation_p osl_relation_pmalloc(int, int, int);
 147 osl_relation_p osl_relation_malloc(int, int);
 148 void           osl_relation_free_inside(osl_relation_p);
 149 void           osl_relation_free(osl_relation_p);
 150
 151
 152 /*+***************************************************************************
 153  *                            Processing functions                           *
 154  *****************************************************************************/
 155 osl_relation_p osl_relation_nclone(osl_relation_p, int);
 156 osl_relation_p osl_relation_clone(osl_relation_p);
 157 void           osl_relation_replace_vector(osl_relation_p, osl_vector_p, int);
 158 void           osl_relation_insert_vector(osl_relation_p, osl_vector_p, int);
 159 void           osl_relation_add_vector(osl_relation_p, osl_vector_p, int);
 160 void           osl_relation_sub_vector(osl_relation_p, osl_vector_p, int);
 161 osl_relation_p osl_relation_from_vector(osl_vector_p);
 162 void           osl_relation_replace_constraints(osl_relation_p,
 163                                                 osl_relation_p, int);
 164 void           osl_relation_insert_constraints(osl_relation_p,
 165                                                osl_relation_p, int);
 166 osl_relation_p osl_relation_concat_constraints(osl_relation_p, osl_relation_p);
 167 int            osl_relation_equal(osl_relation_p, osl_relation_p);
 168 int            osl_relation_integrity_check(osl_relation_p, int, int, int,int);
 169 osl_relation_p osl_relation_union(osl_relation_p, osl_relation_p);
 170 void           osl_relation_set_type(osl_relation_p, int);
 171 int            osl_relation_get_array_id(osl_relation_p);
 172 int            osl_relation_is_access(osl_relation_p);
 173
 174
 175 # if defined(__cplusplus)
 176   }
 177 # endif
 178 #endif /* define OSL_RELATION_H */