diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/strings/ascii_benchmark.cc')
-rw-r--r-- | third_party/abseil_cpp/absl/strings/ascii_benchmark.cc | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/third_party/abseil_cpp/absl/strings/ascii_benchmark.cc b/third_party/abseil_cpp/absl/strings/ascii_benchmark.cc deleted file mode 100644 index aca458c8042f..000000000000 --- a/third_party/abseil_cpp/absl/strings/ascii_benchmark.cc +++ /dev/null @@ -1,120 +0,0 @@ -// Copyright 2018 The Abseil 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. - -#include "absl/strings/ascii.h" - -#include <cctype> -#include <string> -#include <array> -#include <random> - -#include "benchmark/benchmark.h" - -namespace { - -std::array<unsigned char, 256> MakeShuffledBytes() { - std::array<unsigned char, 256> bytes; - for (size_t i = 0; i < 256; ++i) bytes[i] = static_cast<unsigned char>(i); - std::random_device rd; - std::seed_seq seed({rd(), rd(), rd(), rd(), rd(), rd(), rd(), rd()}); - std::mt19937 g(seed); - std::shuffle(bytes.begin(), bytes.end(), g); - return bytes; -} - -template <typename Function> -void AsciiBenchmark(benchmark::State& state, Function f) { - std::array<unsigned char, 256> bytes = MakeShuffledBytes(); - size_t sum = 0; - for (auto _ : state) { - for (unsigned char b : bytes) sum += f(b) ? 1 : 0; - } - // Make a copy of `sum` before calling `DoNotOptimize` to make sure that `sum` - // can be put in a CPU register and not degrade performance in the loop above. - size_t sum2 = sum; - benchmark::DoNotOptimize(sum2); - state.SetBytesProcessed(state.iterations() * bytes.size()); -} - -using StdAsciiFunction = int (*)(int); -template <StdAsciiFunction f> -void BM_Ascii(benchmark::State& state) { - AsciiBenchmark(state, f); -} - -using AbslAsciiIsFunction = bool (*)(unsigned char); -template <AbslAsciiIsFunction f> -void BM_Ascii(benchmark::State& state) { - AsciiBenchmark(state, f); -} - -using AbslAsciiToFunction = char (*)(unsigned char); -template <AbslAsciiToFunction f> -void BM_Ascii(benchmark::State& state) { - AsciiBenchmark(state, f); -} - -inline char Noop(unsigned char b) { return static_cast<char>(b); } - -BENCHMARK_TEMPLATE(BM_Ascii, Noop); -BENCHMARK_TEMPLATE(BM_Ascii, std::isalpha); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isalpha); -BENCHMARK_TEMPLATE(BM_Ascii, std::isdigit); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isdigit); -BENCHMARK_TEMPLATE(BM_Ascii, std::isalnum); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isalnum); -BENCHMARK_TEMPLATE(BM_Ascii, std::isspace); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isspace); -BENCHMARK_TEMPLATE(BM_Ascii, std::ispunct); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_ispunct); -BENCHMARK_TEMPLATE(BM_Ascii, std::isblank); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isblank); -BENCHMARK_TEMPLATE(BM_Ascii, std::iscntrl); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_iscntrl); -BENCHMARK_TEMPLATE(BM_Ascii, std::isxdigit); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isxdigit); -BENCHMARK_TEMPLATE(BM_Ascii, std::isprint); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isprint); -BENCHMARK_TEMPLATE(BM_Ascii, std::isgraph); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isgraph); -BENCHMARK_TEMPLATE(BM_Ascii, std::isupper); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isupper); -BENCHMARK_TEMPLATE(BM_Ascii, std::islower); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_islower); -BENCHMARK_TEMPLATE(BM_Ascii, isascii); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_isascii); -BENCHMARK_TEMPLATE(BM_Ascii, std::tolower); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_tolower); -BENCHMARK_TEMPLATE(BM_Ascii, std::toupper); -BENCHMARK_TEMPLATE(BM_Ascii, absl::ascii_toupper); - -static void BM_StrToLower(benchmark::State& state) { - const int size = state.range(0); - std::string s(size, 'X'); - for (auto _ : state) { - benchmark::DoNotOptimize(absl::AsciiStrToLower(s)); - } -} -BENCHMARK(BM_StrToLower)->Range(1, 1 << 20); - -static void BM_StrToUpper(benchmark::State& state) { - const int size = state.range(0); - std::string s(size, 'x'); - for (auto _ : state) { - benchmark::DoNotOptimize(absl::AsciiStrToUpper(s)); - } -} -BENCHMARK(BM_StrToUpper)->Range(1, 1 << 20); - -} // namespace |