diff options
Diffstat (limited to 'absl/container/internal/raw_hash_set_benchmark.cc')
-rw-r--r-- | absl/container/internal/raw_hash_set_benchmark.cc | 77 |
1 files changed, 62 insertions, 15 deletions
diff --git a/absl/container/internal/raw_hash_set_benchmark.cc b/absl/container/internal/raw_hash_set_benchmark.cc index f9be2c5a..47dc9048 100644 --- a/absl/container/internal/raw_hash_set_benchmark.cc +++ b/absl/container/internal/raw_hash_set_benchmark.cc @@ -254,6 +254,23 @@ void BM_CopyAssign(benchmark::State& state) { } BENCHMARK(BM_CopyAssign)->Range(128, 4096); +void BM_RangeCtor(benchmark::State& state) { + std::random_device rd; + std::mt19937 rng(rd()); + std::uniform_int_distribution<uint64_t> dist(0, ~uint64_t{}); + std::vector<int> values; + const size_t desired_size = state.range(0); + while (values.size() < desired_size) { + values.emplace_back(dist(rng)); + } + + for (auto unused : state) { + IntTable t{values.begin(), values.end()}; + benchmark::DoNotOptimize(t); + } +} +BENCHMARK(BM_RangeCtor)->Range(128, 65536); + void BM_NoOpReserveIntTable(benchmark::State& state) { IntTable t; t.reserve(100000); @@ -298,56 +315,79 @@ void BM_ReserveStringTable(benchmark::State& state) { } BENCHMARK(BM_ReserveStringTable)->Range(128, 4096); +// Like std::iota, except that ctrl_t doesn't support operator++. +template <typename CtrlIter> +void Iota(CtrlIter begin, CtrlIter end, int value) { + for (; begin != end; ++begin, ++value) { + *begin = static_cast<ctrl_t>(value); + } +} + void BM_Group_Match(benchmark::State& state) { std::array<ctrl_t, Group::kWidth> group; - std::iota(group.begin(), group.end(), -4); + Iota(group.begin(), group.end(), -4); Group g{group.data()}; h2_t h = 1; for (auto _ : state) { ::benchmark::DoNotOptimize(h); + ::benchmark::DoNotOptimize(g); ::benchmark::DoNotOptimize(g.Match(h)); } } BENCHMARK(BM_Group_Match); -void BM_Group_MatchEmpty(benchmark::State& state) { +void BM_Group_MaskEmpty(benchmark::State& state) { std::array<ctrl_t, Group::kWidth> group; - std::iota(group.begin(), group.end(), -4); + Iota(group.begin(), group.end(), -4); Group g{group.data()}; - for (auto _ : state) ::benchmark::DoNotOptimize(g.MatchEmpty()); + for (auto _ : state) { + ::benchmark::DoNotOptimize(g); + ::benchmark::DoNotOptimize(g.MaskEmpty()); + } } -BENCHMARK(BM_Group_MatchEmpty); +BENCHMARK(BM_Group_MaskEmpty); -void BM_Group_MatchEmptyOrDeleted(benchmark::State& state) { +void BM_Group_MaskEmptyOrDeleted(benchmark::State& state) { std::array<ctrl_t, Group::kWidth> group; - std::iota(group.begin(), group.end(), -4); + Iota(group.begin(), group.end(), -4); Group g{group.data()}; - for (auto _ : state) ::benchmark::DoNotOptimize(g.MatchEmptyOrDeleted()); + for (auto _ : state) { + ::benchmark::DoNotOptimize(g); + ::benchmark::DoNotOptimize(g.MaskEmptyOrDeleted()); + } } -BENCHMARK(BM_Group_MatchEmptyOrDeleted); +BENCHMARK(BM_Group_MaskEmptyOrDeleted); void BM_Group_CountLeadingEmptyOrDeleted(benchmark::State& state) { std::array<ctrl_t, Group::kWidth> group; - std::iota(group.begin(), group.end(), -2); + Iota(group.begin(), group.end(), -2); Group g{group.data()}; - for (auto _ : state) + for (auto _ : state) { + ::benchmark::DoNotOptimize(g); ::benchmark::DoNotOptimize(g.CountLeadingEmptyOrDeleted()); + } } BENCHMARK(BM_Group_CountLeadingEmptyOrDeleted); void BM_Group_MatchFirstEmptyOrDeleted(benchmark::State& state) { std::array<ctrl_t, Group::kWidth> group; - std::iota(group.begin(), group.end(), -2); + Iota(group.begin(), group.end(), -2); Group g{group.data()}; - for (auto _ : state) ::benchmark::DoNotOptimize(*g.MatchEmptyOrDeleted()); + for (auto _ : state) { + ::benchmark::DoNotOptimize(g); + ::benchmark::DoNotOptimize(g.MaskEmptyOrDeleted().LowestBitSet()); + } } BENCHMARK(BM_Group_MatchFirstEmptyOrDeleted); void BM_DropDeletes(benchmark::State& state) { constexpr size_t capacity = (1 << 20) - 1; std::vector<ctrl_t> ctrl(capacity + 1 + Group::kWidth); - ctrl[capacity] = kSentinel; - std::vector<ctrl_t> pattern = {kEmpty, 2, kDeleted, 2, kEmpty, 1, kDeleted}; + ctrl[capacity] = ctrl_t::kSentinel; + std::vector<ctrl_t> pattern = {ctrl_t::kEmpty, static_cast<ctrl_t>(2), + ctrl_t::kDeleted, static_cast<ctrl_t>(2), + ctrl_t::kEmpty, static_cast<ctrl_t>(1), + ctrl_t::kDeleted}; for (size_t i = 0; i != capacity; ++i) { ctrl[i] = pattern[i % pattern.size()]; } @@ -378,6 +418,12 @@ bool CodegenAbslRawHashSetInt64FindNeEnd( return table->find(key) != table->end(); } +auto CodegenAbslRawHashSetInt64Insert(absl::container_internal::IntTable* table, + int64_t key) + -> decltype(table->insert(key)) { + return table->insert(key); +} + bool CodegenAbslRawHashSetInt64Contains( absl::container_internal::IntTable* table, int64_t key) { return table->contains(key); @@ -391,6 +437,7 @@ void CodegenAbslRawHashSetInt64Iterate( int odr = (::benchmark::DoNotOptimize(std::make_tuple( &CodegenAbslRawHashSetInt64Find, &CodegenAbslRawHashSetInt64FindNeEnd, + &CodegenAbslRawHashSetInt64Insert, &CodegenAbslRawHashSetInt64Contains, &CodegenAbslRawHashSetInt64Iterate)), 1); |