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a9138cdb36
``` --------------------------------------------------------------- Benchmark old new --------------------------------------------------------------- bm_vector_bool_count/1 1.92 ns 1.92 ns bm_vector_bool_count/2 1.92 ns 1.92 ns bm_vector_bool_count/3 1.92 ns 1.92 ns bm_vector_bool_count/4 1.92 ns 1.92 ns bm_vector_bool_count/5 1.92 ns 1.92 ns bm_vector_bool_count/6 1.92 ns 1.92 ns bm_vector_bool_count/7 1.92 ns 1.92 ns bm_vector_bool_count/8 1.92 ns 1.92 ns bm_vector_bool_count/16 1.92 ns 1.92 ns bm_vector_bool_count/64 2.24 ns 2.25 ns bm_vector_bool_count/512 3.19 ns 3.20 ns bm_vector_bool_count/4096 14.1 ns 12.3 ns bm_vector_bool_count/32768 84.0 ns 83.6 ns bm_vector_bool_count/262144 664 ns 661 ns bm_vector_bool_count/1048576 2623 ns 2628 ns bm_vector_bool_ranges_count/1 1.07 ns 1.92 ns bm_vector_bool_ranges_count/2 1.65 ns 1.92 ns bm_vector_bool_ranges_count/3 2.27 ns 1.92 ns bm_vector_bool_ranges_count/4 2.68 ns 1.92 ns bm_vector_bool_ranges_count/5 3.33 ns 1.92 ns bm_vector_bool_ranges_count/6 3.99 ns 1.92 ns bm_vector_bool_ranges_count/7 4.67 ns 1.92 ns bm_vector_bool_ranges_count/8 5.19 ns 1.92 ns bm_vector_bool_ranges_count/16 11.1 ns 1.92 ns bm_vector_bool_ranges_count/64 52.2 ns 2.24 ns bm_vector_bool_ranges_count/512 452 ns 3.20 ns bm_vector_bool_ranges_count/4096 3577 ns 12.1 ns bm_vector_bool_ranges_count/32768 28725 ns 83.7 ns bm_vector_bool_ranges_count/262144 229676 ns 662 ns bm_vector_bool_ranges_count/1048576 905574 ns 2625 ns ``` Reviewed By: #libc, ldionne Spies: arichardson, ldionne, libcxx-commits Differential Revision: https://reviews.llvm.org/D156956
62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___ALGORITHM_RANGES_COUNT_H
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#define _LIBCPP___ALGORITHM_RANGES_COUNT_H
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#include <__algorithm/count.h>
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#include <__algorithm/iterator_operations.h>
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#include <__config>
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#include <__functional/identity.h>
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#include <__functional/ranges_operations.h>
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#include <__iterator/concepts.h>
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#include <__iterator/incrementable_traits.h>
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#include <__iterator/iterator_traits.h>
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#include <__iterator/projected.h>
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#include <__ranges/access.h>
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#include <__ranges/concepts.h>
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#include <__utility/move.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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#if _LIBCPP_STD_VER >= 20
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace ranges {
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namespace __count {
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struct __fn {
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template <input_iterator _Iter, sentinel_for<_Iter> _Sent, class _Type, class _Proj = identity>
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requires indirect_binary_predicate<ranges::equal_to, projected<_Iter, _Proj>, const _Type*>
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_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr iter_difference_t<_Iter>
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operator()(_Iter __first, _Sent __last, const _Type& __value, _Proj __proj = {}) const {
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return std::__count<_RangeAlgPolicy>(std::move(__first), std::move(__last), __value, __proj);
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}
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template <input_range _Range, class _Type, class _Proj = identity>
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requires indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*>
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_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr range_difference_t<_Range>
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operator()(_Range&& __r, const _Type& __value, _Proj __proj = {}) const {
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return std::__count<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), __value, __proj);
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}
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};
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} // namespace __count
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inline namespace __cpo {
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inline constexpr auto count = __count::__fn{};
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} // namespace __cpo
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} // namespace ranges
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STD_VER >= 20
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#endif // _LIBCPP___ALGORITHM_RANGES_COUNT_H
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