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.
57 lines
1.7 KiB
C++
57 lines
1.7 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 <array>
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#include <benchmark/benchmark.h>
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#include <cstring>
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#include <numeric>
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#include <random>
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template <class T>
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static std::array<T, 1000> generate(std::uniform_int_distribution<T> distribution = std::uniform_int_distribution<T>{
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std::numeric_limits<T>::min() + 1, std::numeric_limits<T>::max()}) {
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std::mt19937 generator;
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std::array<T, 1000> result;
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std::generate_n(result.begin(), result.size(), [&] { return distribution(generator); });
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return result;
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}
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static void bm_gcd_random(benchmark::State& state) {
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std::array data = generate<int>();
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while (state.KeepRunningBatch(data.size()))
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for (auto v0 : data)
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for (auto v1 : data)
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benchmark::DoNotOptimize(std::gcd(v0, v1));
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}
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BENCHMARK(bm_gcd_random);
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static void bm_gcd_trivial(benchmark::State& state) {
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int lhs = ~static_cast<int>(0), rhs = 1;
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for (auto _ : state) {
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benchmark::DoNotOptimize(lhs);
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benchmark::DoNotOptimize(rhs);
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benchmark::DoNotOptimize(std::gcd(lhs, rhs));
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}
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}
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BENCHMARK(bm_gcd_trivial);
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static void bm_gcd_complex(benchmark::State& state) {
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long long lhs = 2971215073;
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long long rhs = 1836311903;
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for (auto _ : state) {
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benchmark::DoNotOptimize(lhs);
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benchmark::DoNotOptimize(rhs);
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benchmark::DoNotOptimize(std::gcd(lhs, rhs));
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}
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}
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BENCHMARK(bm_gcd_complex);
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BENCHMARK_MAIN();
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