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5e19e317c0
This replaces `BENCHMARK_TEMPLATE` with `BENCHMARK` and uses `BENCHMARK_MAIN()` when possible.
103 lines
3.9 KiB
C++
103 lines
3.9 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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#include <format>
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#include <algorithm>
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#include <array>
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#include <iterator>
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#include <list>
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#include <span>
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#include <string>
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#include <vector>
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#include "benchmark/benchmark.h"
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#include "make_string.h"
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#define CSTR(S) MAKE_CSTRING(CharT, S)
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/*** Back inserter ***/
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template <class Container>
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static void BM_format_to_string_back_inserter(benchmark::State& state) {
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using CharT = typename Container::value_type;
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size_t size = state.range(0);
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auto str = std::basic_string<CharT>(size, CharT('*'));
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for (auto _ : state) {
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Container output;
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benchmark::DoNotOptimize(std::format_to(std::back_inserter(output), CSTR("{}"), str));
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}
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state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
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}
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/*** Begin ***/
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template <class Container>
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static void BM_format_to_string_begin(benchmark::State& state) {
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using CharT = typename Container::value_type;
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size_t size = state.range(0);
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auto str = std::basic_string<CharT>(size, CharT('*'));
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Container output(size, CharT('-'));
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for (auto _ : state)
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benchmark::DoNotOptimize(std::format_to(std::begin(output), CSTR("{}"), str));
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state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
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}
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/*** Pointer ***/
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template <class CharT>
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static void BM_format_to_string_span(benchmark::State& state) {
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size_t size = state.range(0);
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auto str = std::basic_string<CharT>(size, CharT('*'));
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auto buffer = std::basic_string<CharT>(size, CharT('-'));
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std::span<CharT> output{buffer};
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for (auto _ : state)
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benchmark::DoNotOptimize(std::format_to(std::begin(output), CSTR("{}"), str));
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state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
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}
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template <class CharT>
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static void BM_format_to_string_pointer(benchmark::State& state) {
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size_t size = state.range(0);
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auto str = std::basic_string<CharT>(size, CharT('*'));
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auto buffer = std::basic_string<CharT>(size, CharT('-'));
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CharT* output = buffer.data();
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for (auto _ : state)
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benchmark::DoNotOptimize(std::format_to(output, CSTR("{}"), str));
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state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
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}
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/*** Main ***/
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BENCHMARK(BM_format_to_string_back_inserter<std::string>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_back_inserter<std::vector<char>>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_back_inserter<std::list<char>>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_begin<std::string>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_begin<std::vector<char>>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_begin<std::list<char>>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_span<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_pointer<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_back_inserter<std::wstring>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_back_inserter<std::vector<wchar_t>>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_back_inserter<std::list<wchar_t>>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_begin<std::wstring>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_begin<std::vector<wchar_t>>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_begin<std::list<wchar_t>>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_span<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK(BM_format_to_string_pointer<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
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BENCHMARK_MAIN();
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