| 1 | //===----------------------------------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| 10 | |
| 11 | #include <algorithm> |
| 12 | #include <vector> |
| 13 | |
| 14 | #include <benchmark/benchmark.h> |
| 15 | |
| 16 | void run_sizes(auto benchmark) { |
| 17 | benchmark->Arg(1) |
| 18 | ->Arg(2) |
| 19 | ->Arg(3) |
| 20 | ->Arg(4) |
| 21 | ->Arg(64) |
| 22 | ->Arg(512) |
| 23 | ->Arg(1024) |
| 24 | ->Arg(4000) |
| 25 | ->Arg(4096) |
| 26 | ->Arg(5500) |
| 27 | ->Arg(64000) |
| 28 | ->Arg(65536) |
| 29 | ->Arg(70000); |
| 30 | } |
| 31 | |
| 32 | template <class T> |
| 33 | void BM_std_minmax_element(benchmark::State& state) { |
| 34 | std::vector<T> vec(state.range(), 3); |
| 35 | |
| 36 | for (auto _ : state) { |
| 37 | benchmark::DoNotOptimize(vec); |
| 38 | benchmark::DoNotOptimize(std::minmax_element(vec.begin(), vec.end())); |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | BENCHMARK(BM_std_minmax_element<char>)->Apply(func: run_sizes); |
| 43 | BENCHMARK(BM_std_minmax_element<short>)->Apply(func: run_sizes); |
| 44 | BENCHMARK(BM_std_minmax_element<int>)->Apply(func: run_sizes); |
| 45 | BENCHMARK(BM_std_minmax_element<long long>)->Apply(func: run_sizes); |
| 46 | |
| 47 | BENCHMARK_MAIN(); |
| 48 |