derek.holloway
7502bf64a4
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67 lines
2.9 KiB
C++
67 lines
2.9 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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// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
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#include <algorithm>
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#include <deque>
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#include <ranges>
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#include <vector>
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#include "benchmark/benchmark.h"
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namespace {
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template <size_t N>
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void BM_adjacent_full(benchmark::State& state) {
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const std::vector<int> inputs(1000000, 42);
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auto view = inputs | std::views::adjacent<N>;
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for (auto _ : state) {
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auto it = view.begin();
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benchmark::DoNotOptimize(it);
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}
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}
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BENCHMARK(BM_adjacent_full<2>)->Name("rng::adjacent_view::begin()/2 (full view)");
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BENCHMARK(BM_adjacent_full<3>)->Name("rng::adjacent_view::begin()/3 (full view)");
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BENCHMARK(BM_adjacent_full<4>)->Name("rng::adjacent_view::begin()/4 (full view)");
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BENCHMARK(BM_adjacent_full<5>)->Name("rng::adjacent_view::begin()/5 (full view)");
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BENCHMARK(BM_adjacent_full<6>)->Name("rng::adjacent_view::begin()/6 (full view)");
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BENCHMARK(BM_adjacent_full<7>)->Name("rng::adjacent_view::begin()/7 (full view)");
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BENCHMARK(BM_adjacent_full<8>)->Name("rng::adjacent_view::begin()/8 (full view)");
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BENCHMARK(BM_adjacent_full<9>)->Name("rng::adjacent_view::begin()/9 (full view)");
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BENCHMARK(BM_adjacent_full<10>)->Name("rng::adjacent_view::begin()/10 (full view)");
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BENCHMARK(BM_adjacent_full<100>)->Name("rng::adjacent_view::begin()/100 (full view)");
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BENCHMARK(BM_adjacent_full<1000>)->Name("rng::adjacent_view::begin()/1000 (full view)");
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template <size_t N>
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void BM_adjacent_empty(benchmark::State& state) {
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const std::vector<int> inputs;
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auto view = inputs | std::views::adjacent<N>;
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for (auto _ : state) {
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auto it = view.begin();
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benchmark::DoNotOptimize(it);
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}
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}
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BENCHMARK(BM_adjacent_empty<2>)->Name("rng::adjacent_view::begin()/2 (empty view)");
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BENCHMARK(BM_adjacent_empty<3>)->Name("rng::adjacent_view::begin()/3 (empty view)");
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BENCHMARK(BM_adjacent_empty<4>)->Name("rng::adjacent_view::begin()/4 (empty view)");
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BENCHMARK(BM_adjacent_empty<5>)->Name("rng::adjacent_view::begin()/5 (empty view)");
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BENCHMARK(BM_adjacent_empty<6>)->Name("rng::adjacent_view::begin()/6 (empty view)");
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BENCHMARK(BM_adjacent_empty<7>)->Name("rng::adjacent_view::begin()/7 (empty view)");
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BENCHMARK(BM_adjacent_empty<8>)->Name("rng::adjacent_view::begin()/8 (empty view)");
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BENCHMARK(BM_adjacent_empty<9>)->Name("rng::adjacent_view::begin()/9 (empty view)");
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BENCHMARK(BM_adjacent_empty<10>)->Name("rng::adjacent_view::begin()/10 (empty view)");
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BENCHMARK(BM_adjacent_empty<100>)->Name("rng::adjacent_view::begin()/100 (empty view)");
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BENCHMARK(BM_adjacent_empty<1000>)->Name("rng::adjacent_view::begin()/1000 (empty view)");
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} // namespace
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BENCHMARK_MAIN();
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