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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.
43 lines
1.3 KiB
C++
43 lines
1.3 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
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#include <cstdint>
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#include <cstddef>
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#include <functional>
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#include "benchmark/benchmark.h"
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#include "GenerateInput.h"
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#include "test_macros.h"
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constexpr std::size_t TestNumInputs = 1024;
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template <class HashFn, class GenInputs>
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void BM_Hash(benchmark::State& st, HashFn fn, GenInputs gen) {
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auto in = gen(st.range(0));
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const auto end = in.data() + in.size();
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std::size_t last_hash = 0;
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benchmark::DoNotOptimize(&last_hash);
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while (st.KeepRunning()) {
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for (auto it = in.data(); it != end; ++it) {
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benchmark::DoNotOptimize(last_hash += fn(*it));
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}
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benchmark::ClobberMemory();
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}
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}
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BENCHMARK_CAPTURE(BM_Hash, uint32_random_std_hash, std::hash<uint32_t>{}, getRandomIntegerInputs<uint32_t>)
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->Arg(TestNumInputs);
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BENCHMARK_CAPTURE(BM_Hash, uint32_top_std_hash, std::hash<uint32_t>{}, getSortedTopBitsIntegerInputs<uint32_t>)
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->Arg(TestNumInputs);
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BENCHMARK_MAIN();
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