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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
#include <format>
#include <string>
#include "benchmark/benchmark.h"
#include "make_string.h"
#include "test_macros.h"
#define CSTR(S) MAKE_CSTRING(CharT, S)
template <class CharT>
static void BM_format_string(benchmark::State& state) {
size_t size = state.range(0);
std::basic_string<CharT> str(size, CharT('*'));
while (state.KeepRunningBatch(str.size())) {
std::basic_string<CharT> s = std::format(CSTR("{}"), str);
benchmark::DoNotOptimize(s);
}
state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
}
BENCHMARK(BM_format_string<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
BENCHMARK(BM_format_string<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
#endif
template <class CharT>
static void BM_string_without_formatting(benchmark::State& state) {
for (auto _ : state) {
benchmark::DoNotOptimize(std::format(CSTR("Hello, World!")));
}
}
BENCHMARK(BM_string_without_formatting<char>);
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
BENCHMARK(BM_string_without_formatting<wchar_t>);
#endif
BENCHMARK_MAIN();
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