Line data    Source code

       1              : /* Measuring the complexity of svalues/regions.
       2              :    Copyright (C) 2020-2026 Free Software Foundation, Inc.
       3              :    Contributed by David Malcolm <dmalcolm@redhat.com>.
       4              : 
       5              : This file is part of GCC.
       6              : 
       7              : GCC is free software; you can redistribute it and/or modify it
       8              : under the terms of the GNU General Public License as published by
       9              : the Free Software Foundation; either version 3, or (at your option)
      10              : any later version.
      11              : 
      12              : GCC is distributed in the hope that it will be useful, but
      13              : WITHOUT ANY WARRANTY; without even the implied warranty of
      14              : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15              : General Public License for more details.
      16              : 
      17              : You should have received a copy of the GNU General Public License
      18              : along with GCC; see the file COPYING3.  If not see
      19              : <http://www.gnu.org/licenses/>.  */
      20              : 
      21              : #ifndef GCC_ANALYZER_COMPLEXITY_H
      22              : #define GCC_ANALYZER_COMPLEXITY_H
      23              : 
      24              : namespace ana {
      25              : 
      26              : /* A measurement of the complexity of an svalue or region, so that
      27              :    we can impose bounds on the growth of these tree-like structures
      28              :    and thus avoid infinite chains of analysis.  */
      29              : 
      30              : struct complexity
      31              : {
      32       134783 :   complexity (unsigned num_nodes, unsigned max_depth)
      33         7874 :   : m_num_nodes (num_nodes), m_max_depth (max_depth)
      34              :   {}
      35              : 
      36              :   complexity (const region *reg);
      37              :   complexity (const svalue *sval);
      38              :   static complexity from_pair (const complexity &c1, const complexity &c);
      39              :   static complexity from_vec_svalue (const vec<const svalue *> &vec);
      40              : 
      41              :   /* The total number of svalues and regions in the tree of this
      42              :      entity, including the entity itself.  */
      43              :   unsigned m_num_nodes;
      44              : 
      45              :   /* The maximum depth of the tree of this entity, including the
      46              :      entity itself.  */
      47              :   unsigned m_max_depth;
      48              : };
      49              : 
      50              : } // namespace ana
      51              : 
      52              : #endif /* GCC_ANALYZER_COMPLEXITY_H */