gcc/tree-hash-traits.h

   1 /* Traits for hashing trees.
   2    Copyright (C) 2014-2020 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef tree_hash_traits_h
  21 #define tree_hash_traits_h
  22
  23 /* Hash for trees based on operand_equal_p.  */
  24 struct tree_operand_hash : ggc_ptr_hash <tree_node>
  25 {
  26   static inline hashval_t hash (const value_type &);
  27   static inline bool equal (const value_type &,
  28                             const compare_type &);
  29 };
  30
  31 inline hashval_t
  32 tree_operand_hash::hash (const value_type &t)
  33 {
  34   return iterative_hash_expr (t, 0);
  35 }
  36
  37 inline bool
  38 tree_operand_hash::equal (const value_type &t1,
  39                           const compare_type &t2)
  40 {
  41   return operand_equal_p (t1, t2, 0);
  42 }
  43
  44 #endif