1 //===----------------------------------------------------------------------===// 2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 3 // See https://llvm.org/LICENSE.txt for license information. 4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 5 // 6 //===----------------------------------------------------------------------===// 7 8 #include <format> 9 10 #include <string> 11 12 #include "benchmark/benchmark.h" 13 #include "make_string.h" 14 15 #define CSTR(S) MAKE_CSTRING(CharT, S) 16 17 template <class CharT> 18 static void BM_format_string(benchmark::State& state) { 19 size_t size = state.range(0); 20 std::basic_string<CharT> str(size, CharT('*')); 21 22 while (state.KeepRunningBatch(str.size())) 23 benchmark::DoNotOptimize(std::format(CSTR("{}"), str)); 24 25 state.SetBytesProcessed(state.iterations() * size * sizeof(CharT)); 26 } 27 BENCHMARK_TEMPLATE(BM_format_string, char)->RangeMultiplier(2)->Range(1, 1 << 20); 28 BENCHMARK_TEMPLATE(BM_format_string, wchar_t)->RangeMultiplier(2)->Range(1, 1 << 20); 29 30 int main(int argc, char** argv) { 31 benchmark::Initialize(&argc, argv); 32 if (benchmark::ReportUnrecognizedArguments(argc, argv)) 33 return 1; 34 35 benchmark::RunSpecifiedBenchmarks(); 36 } 37