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 #include <algorithm> 10 #include <numeric> 11 #include <random> 12 #include <vector> 13 14 #include "common.h" 15 16 namespace { 17 template <class ValueType> 18 struct LowerBound { 19 size_t Quantity; 20 21 mutable std::mt19937_64 rng { std::random_device{}() }; 22 23 void run(benchmark::State& state) const { 24 runOpOnCopies<ValueType>(state, Quantity, Order::Ascending, BatchSize::CountBatch, [&](auto& Copy) { 25 auto result = std::lower_bound(Copy.begin(), Copy.end(), Copy[rng() % Copy.size()]); 26 benchmark::DoNotOptimize(result); 27 }); 28 } 29 30 std::string name() const { 31 return "BM_LowerBound" + ValueType::name() + "_" + std::to_string(Quantity); 32 } 33 }; 34 } // namespace 35 36 int main(int argc, char** argv) { 37 benchmark::Initialize(&argc, argv); 38 if (benchmark::ReportUnrecognizedArguments(argc, argv)) 39 return 1; 40 makeCartesianProductBenchmark<LowerBound, AllValueTypes>(Quantities); 41 benchmark::RunSpecifiedBenchmarks(); 42 } 43