7ca50de02c
gcc/cp/ChangeLog: * cp-gimplify.c (source_location_table_entry_hash::empty_zero_p): New static constant. * cp-tree.h (named_decl_hash::empty_zero_p): Likewise. (struct named_label_hash::empty_zero_p): Likewise. * decl2.c (mangled_decl_hash::empty_zero_p): Likewise. gcc/ChangeLog: * attribs.c (excl_hash_traits::empty_zero_p): New static constant. * gcov.c (function_start_pair_hash::empty_zero_p): Likewise. * graphite.c (struct sese_scev_hash::empty_zero_p): Likewise. * hash-map-tests.c (selftest::test_nonzero_empty_key): New selftest. (selftest::hash_map_tests_c_tests): Call it. * hash-map-traits.h (simple_hashmap_traits::empty_zero_p): New static constant, using the value of = H::empty_zero_p. (unbounded_hashmap_traits::empty_zero_p): Likewise, using the value from default_hash_traits <Value>. * hash-map.h (hash_map::empty_zero_p): Likewise, using the value from Traits. * hash-set-tests.c (value_hash_traits::empty_zero_p): Likewise. * hash-table.h (hash_table::alloc_entries): Guard the loop of calls to mark_empty with !Descriptor::empty_zero_p. (hash_table::empty_slow): Conditionalize the memset call with a check that Descriptor::empty_zero_p; otherwise, loop through the entries calling mark_empty on them. * hash-traits.h (int_hash::empty_zero_p): New static constant. (pointer_hash::empty_zero_p): Likewise. (pair_hash::empty_zero_p): Likewise. * ipa-devirt.c (default_hash_traits <type_pair>::empty_zero_p): Likewise. * ipa-prop.c (ipa_bit_ggc_hash_traits::empty_zero_p): Likewise. (ipa_vr_ggc_hash_traits::empty_zero_p): Likewise. * profile.c (location_triplet_hash::empty_zero_p): Likewise. * sanopt.c (sanopt_tree_triplet_hash::empty_zero_p): Likewise. (sanopt_tree_couple_hash::empty_zero_p): Likewise. * tree-hasher.h (int_tree_hasher::empty_zero_p): Likewise. * tree-ssa-sccvn.c (vn_ssa_aux_hasher::empty_zero_p): Likewise. * tree-vect-slp.c (bst_traits::empty_zero_p): Likewise. * tree-vectorizer.h (default_hash_traits<scalar_cond_masked_key>::empty_zero_p): Likewise.
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/* Hash Table Helper for Trees
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Copyright (C) 2012-2020 Free Software Foundation, Inc.
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Contributed by Lawrence Crowl <crowl@google.com>
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_TREE_HASHER_H
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#define GCC_TREE_HASHER_H 1
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struct int_tree_map {
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unsigned int uid;
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tree to;
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};
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/* Hashtable helpers. */
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struct int_tree_hasher
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{
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typedef int_tree_map value_type;
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typedef int_tree_map compare_type;
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static inline hashval_t hash (const value_type &);
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static inline bool equal (const value_type &, const compare_type &);
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static bool is_deleted (const value_type &v)
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{
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return v.to == reinterpret_cast<tree> (1);
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}
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static void mark_deleted (value_type &v) { v.to = reinterpret_cast<tree> (0x1); }
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static bool is_empty (const value_type &v) { return v.to == NULL; }
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static const bool empty_zero_p = true;
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static void mark_empty (value_type &v) { v.to = NULL; }
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static void remove (value_type &) {}
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};
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/* Hash a UID in a int_tree_map. */
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inline hashval_t
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int_tree_hasher::hash (const value_type &item)
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{
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return item.uid;
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}
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/* Return true if the uid in both int tree maps are equal. */
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inline bool
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int_tree_hasher::equal (const value_type &a, const compare_type &b)
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{
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return (a.uid == b.uid);
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}
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typedef hash_table <int_tree_hasher> int_tree_htab_type;
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#endif /* GCC_TREE_HASHER_H */
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