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b2d2494731
This patch fixes warnings and errors that come up when running the benchmarks as part of the test suite. It also adds the necessary Lit annotations to make it pass in various configurations and increases the portability of the benchmarks.
59 lines
2.0 KiB
C++
59 lines
2.0 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
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#include <algorithm>
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#include <benchmark/benchmark.h>
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#include <random>
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void BenchmarkSizes(benchmark::internal::Benchmark* Benchmark) {
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Benchmark->DenseRange(1, 8);
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for (size_t i = 16; i != 1 << 20; i *= 2) {
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Benchmark->Arg(i - 1);
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Benchmark->Arg(i);
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Benchmark->Arg(i + 1);
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}
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}
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// TODO: Look into benchmarking aligned and unaligned memory explicitly
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// (currently things happen to be aligned because they are malloced that way)
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template <class T>
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static void bm_mismatch(benchmark::State& state) {
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std::vector<T> vec1(state.range(), '1');
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std::vector<T> vec2(state.range(), '1');
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std::mt19937_64 rng(std::random_device{}());
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vec1.back() = '2';
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for (auto _ : state) {
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benchmark::DoNotOptimize(vec1);
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benchmark::DoNotOptimize(std::mismatch(vec1.begin(), vec1.end(), vec2.begin()));
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}
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}
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BENCHMARK(bm_mismatch<char>)->Apply(BenchmarkSizes);
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BENCHMARK(bm_mismatch<short>)->Apply(BenchmarkSizes);
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BENCHMARK(bm_mismatch<int>)->Apply(BenchmarkSizes);
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template <class T>
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static void bm_mismatch_two_range_overload(benchmark::State& state) {
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std::vector<T> vec1(state.range(), '1');
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std::vector<T> vec2(state.range(), '1');
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std::mt19937_64 rng(std::random_device{}());
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vec1.back() = '2';
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for (auto _ : state) {
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benchmark::DoNotOptimize(vec1);
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benchmark::DoNotOptimize(std::mismatch(vec1.begin(), vec1.end(), vec2.begin(), vec2.end()));
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}
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}
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BENCHMARK(bm_mismatch_two_range_overload<char>)->DenseRange(1, 8)->Range(16, 1 << 20);
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BENCHMARK(bm_mismatch_two_range_overload<short>)->DenseRange(1, 8)->Range(16, 1 << 20);
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BENCHMARK(bm_mismatch_two_range_overload<int>)->DenseRange(1, 8)->Range(16, 1 << 20);
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BENCHMARK_MAIN();
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