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Nanobenchmarks
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| Original file line number | Diff line number | Diff line change |
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| #include <emmintrin.h> | ||
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| #include "nanobenchmarks/function_registry.hpp" | ||
| #include "numerics/cbrt.hpp" | ||
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| namespace principia { | ||
| namespace nanobenchmarks { | ||
| namespace _examples { | ||
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| using namespace principia::numerics::_cbrt; | ||
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| BENCHMARKED_FUNCTION(twice) { | ||
| return 2 * x; | ||
| } | ||
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| BENCHMARKED_FUNCTION(thrice) { | ||
| return 3 * x; | ||
| } | ||
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| BENCHMARKED_FUNCTION(inc) { | ||
| return x + 1; | ||
| } | ||
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| BENCHMARKED_FUNCTION(add_4_times) { | ||
| return x * x * x * x * x; | ||
| } | ||
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| BENCHMARKED_FUNCTION(add_16_times) { | ||
| return x + x + x + x + x + x + x + x + x + x + x + x + x + x + x + x + x; | ||
| } | ||
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| BENCHMARKED_FUNCTION(square_root) { | ||
| __m128d x_0 = _mm_set_sd(x); | ||
| return _mm_cvtsd_f64(_mm_sqrt_sd(x_0, x_0)); | ||
| } | ||
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| BENCHMARKED_FUNCTION(sqrt_sqrt) { | ||
| __m128d x_0 = _mm_set_sd(x); | ||
| x_0 = _mm_sqrt_sd(x_0, x_0); | ||
| return _mm_cvtsd_f64(_mm_sqrt_sd(x_0, x_0)); | ||
| } | ||
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| BENCHMARKED_FUNCTION(square_root_division) { | ||
| __m128d x_0 = _mm_set_sd(x); | ||
| return _mm_cvtsd_f64(_mm_div_sd(x_0, _mm_sqrt_sd(x_0, x_0))); | ||
| } | ||
| BENCHMARK_FUNCTION(Cbrt); | ||
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| using namespace principia::numerics::_cbrt::internal; | ||
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| BENCHMARK_FUNCTION(method_3²ᴄZ5¹::Cbrt<Rounding::Faithful>); | ||
| BENCHMARK_FUNCTION(method_3²ᴄZ5¹::Cbrt<Rounding::Correct>); | ||
| BENCHMARK_FUNCTION(method_5²Z4¹FMA::Cbrt<Rounding::Faithful>); | ||
| BENCHMARK_FUNCTION(method_5²Z4¹FMA::Cbrt<Rounding::Correct>); | ||
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| } // namespace _examples | ||
| } // namespace nanobenchmarks | ||
| } // namespace principia |
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| Original file line number | Diff line number | Diff line change |
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| #include "nanobenchmarks/function_registry.hpp" | ||
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| #include <functional> | ||
| #include <map> | ||
| #include <string> | ||
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| #include "glog/logging.h" | ||
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| namespace principia { | ||
| namespace nanobenchmarks { | ||
| namespace _function_registry { | ||
| namespace internal { | ||
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| bool FunctionRegistry::Register(std::string_view name, | ||
| BenchmarkedFunction function) { | ||
| CHECK(singleton_.names_by_function_.emplace(function, name).second) | ||
| << " Registering function " << function << " as " << name << ": " | ||
| << "function already registered as " | ||
| << singleton_.names_by_function_[function]; | ||
| CHECK(singleton_.functions_by_name_.emplace(name, function).second) | ||
| << " Registering function " << function << " as " << name << ": " | ||
| << " name already taken by " | ||
| << singleton_.functions_by_name_.find(name)->second; | ||
| return true; | ||
| } | ||
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| FunctionRegistry& FunctionRegistry::singleton_ = *new FunctionRegistry(); | ||
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| std::map<std::string, BenchmarkedFunction, std::less<>> const& | ||
| FunctionRegistry::functions_by_name() { | ||
| return singleton_.functions_by_name_; | ||
| } | ||
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| std::map<BenchmarkedFunction, std::string> const& | ||
| FunctionRegistry::names_by_function() { | ||
| return singleton_.names_by_function_; | ||
| } | ||
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| } // namespace internal | ||
| } // namespace _function_registry | ||
| } // namespace nanobenchmarks | ||
| } // namespace principia |
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| #pragma once | ||
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| #include <functional> | ||
| #include <map> | ||
| #include <string> | ||
| #include <string_view> | ||
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| #include "base/macros.hpp" | ||
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| namespace principia { | ||
| namespace nanobenchmarks { | ||
| namespace _function_registry { | ||
| namespace internal { | ||
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| using BenchmarkedFunction = double (*)(double); | ||
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| class FunctionRegistry { | ||
| public: | ||
| static bool Register(std::string_view name, BenchmarkedFunction function); | ||
| static std::map<std::string, BenchmarkedFunction, std::less<>> const& | ||
| functions_by_name(); | ||
| static std::map<BenchmarkedFunction, std::string> const& names_by_function(); | ||
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| private: | ||
| FunctionRegistry() = default; | ||
| static FunctionRegistry& singleton_; | ||
| std::map<std::string, BenchmarkedFunction, std::less<>> functions_by_name_; | ||
| std::map<BenchmarkedFunction, std::string> names_by_function_; | ||
| }; | ||
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| #define BENCHMARK_FUNCTION_WITH_NAME(name, ...) \ | ||
| BENCHMARK_FUNCTION_WITH_NAME_INTERNAL(__LINE__, name, __VA_ARGS__) | ||
| #define BENCHMARK_FUNCTION_WITH_NAME_INTERNAL(line, name, ...) \ | ||
| BENCHMARK_FUNCTION_WITH_NAME_INTERNAL2(line, name, __VA_ARGS__) | ||
| #define BENCHMARK_FUNCTION_WITH_NAME_INTERNAL2(line, name, ...) \ | ||
| namespace { \ | ||
| static bool registered##line = ::principia::nanobenchmarks:: \ | ||
| _function_registry::FunctionRegistry::Register(name, &(__VA_ARGS__)); \ | ||
| } | ||
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| #define BENCHMARK_FUNCTION(...) \ | ||
| BENCHMARK_FUNCTION_WITH_NAME(#__VA_ARGS__, __VA_ARGS__) | ||
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| #define BENCHMARKED_FUNCTION(f) \ | ||
| double f(double x); \ | ||
| BENCHMARK_FUNCTION(f); \ | ||
| double f(double x) | ||
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| #define BENCHMARK_EXTERN_C_FUNCTION(f) \ | ||
| extern "C" double f(double); \ | ||
| BENCHMARK_FUNCTION(f) | ||
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| } // namespace internal | ||
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| using internal::BenchmarkedFunction; | ||
| using internal::FunctionRegistry; | ||
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| } // namespace _function_registry | ||
| } // namespace nanobenchmarks | ||
| } // namespace principia |
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