libcxx/benchmarks/algorithms/min_max_element.bench.cpp

   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
  11 #include "common.h"
  12
  13 namespace {
  14 template <class ValueType, class Order>
  15 struct MinMaxElement {
  16   size_t Quantity;
  17
  18   void run(benchmark::State& state) const {
  19     runOpOnCopies<ValueType>(state, Quantity, Order(), BatchSize::CountElements, [](auto& Copy) {
  20       benchmark::DoNotOptimize(std::minmax_element(Copy.begin(), Copy.end()));
  21     });
  22   }
  23
  24   std::string name() const {
  25     return "BM_MinMaxElement" + ValueType::name() + Order::name() + "_" + std::to_string(Quantity);
  26   }
  27 };
  28 } // namespace
  29
  30 int main(int argc, char** argv) {
  31   benchmark::Initialize(&argc, argv);
  32   if (benchmark::ReportUnrecognizedArguments(argc, argv))
  33     return 1;
  34   makeCartesianProductBenchmark<MinMaxElement, AllValueTypes, AllOrders>(Quantities);
  35   benchmark::RunSpecifiedBenchmarks();
  36 }