reserve.cpp

// Copyright 2020 The Division Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Author dietoad@gmail.com && firedtoad@gmail.com

#include <benchmark/benchmark.h>
#include <llvm/ADT/DenseSet.h>
#include <llvm/ADT/SetVector.h>
#include <llvm/ADT/SmallPtrSet.h>
#include <llvm/ADT/SmallSet.h>
#include <llvm/ADT/SparseSet.h>
#include <llvm/ADT/StringSet.h>
#include <unordered_set>

template <class M> static void BM_insert(benchmark::State &state)
{
    for (auto _ : state)
    {
        M m;
        for (auto i = 0; i < 65536; i++)
        {
            m.insert(i);
        }
    }
}

template <class M> static void BM_reserve(benchmark::State &state)
{
    for (auto _ : state)
    {
        M m;
        m.reserve(65536);
        for (auto i = 0; i < 65536; i++)
        {
            m.insert(i);
        }
    }
}

BENCHMARK_TEMPLATE(BM_insert, std::unordered_set<int>);
BENCHMARK_TEMPLATE(BM_reserve, std::unordered_set<int>);
BENCHMARK_TEMPLATE(BM_insert, llvm::DenseSet<int>);
BENCHMARK_TEMPLATE(BM_insert, llvm::SmallSet<int, 32>);

BENCHMARK_TEMPLATE(BM_reserve, llvm::DenseSet<int>);
BENCHMARK_TEMPLATE(BM_insert, llvm::SetVector<int>);

template <class M> static void BM_AdtInsert(benchmark::State &state)
{
    for (auto _ : state)
    {
        M m;
        m.setUniverse(65536);
        for (auto i = 0; i < 65536; i++)
        {
            m.insert(i);
        }
    }
}

BENCHMARK_TEMPLATE(BM_AdtInsert, llvm::SparseSet<unsigned>);

template <class M> static void BM_StringInsert(benchmark::State &state)
{
    for (auto _ : state)
    {
        M m;
        for (auto i = 0; i < 65536; i++)
        {
            m.insert(std::to_string(i));
        }
    }
}

BENCHMARK_TEMPLATE(BM_StringInsert, llvm::StringSet<>);

int main(int argc, char **argv)
{
    benchmark::Initialize(&argc, argv);
    benchmark::RunSpecifiedBenchmarks();
    return 0;
}