1 /* Traits for hashing trees. 2 Copyright (C) 2014-2021 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 hash(const value_type & t)32tree_operand_hash::hash (const value_type &t) 33 { 34 return iterative_hash_expr (t, 0); 35 } 36 37 inline bool equal(const value_type & t1,const compare_type & t2)38tree_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 45