da29608a7a
2011-11-23 François Dumont <fdumont@gcc.gnu.org> PR libstdc++/41975 * include/bits/hashtable.h (_Hashtable<>): Major data model modification to limit performance impact of empty buckets in erase(iterator) implementation. * include/bits/hashtable_policy.h (_Hashtable_iterator, _Hashtable_const_iterator): Remove not used anymore. * include/bits/hashtable_policy.h (_Prime_rehash_policy): Remove _M_grow_factor, just use natural evolution of prime numbers. Add _M_prev_size to know when the number of buckets can be reduced. * include/bits/unordered_set.h (__unordered_set<>, __unordered_multiset<>), unordered_map.h (__unordered_map<>, __unordered_multimap<>): Change default value of cache hash code template parameter, false for integral types with noexcept hash functor, true otherwise. * include/debug/unordered_map, unordered_set: Adapt transformation from iterator/const_iterator to respectively local_iterator/const_local_iterator. * testsuite/performance/23_containers/copy_construct/unordered_set.cc: New. * testsuite/23_containers/unordered_set/instantiation_neg.cc: New. * testsuite/23_containers/unordered_set/hash_policy/rehash.cc: New. * testsuite/23_containers/unordered_multiset/cons/copy.cc: New. * testsuite/23_containers/unordered_multiset/erase/1.cc, 24061-multiset.cc: Add checks on the number of bucket elements. * testsuite/23_containers/unordered_multiset/insert/multiset_range.cc, multiset_single.cc, multiset_single_move.cc: Likewise. From-SVN: r181677 |
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