sfizz/benchmarks/BM_fill.cpp

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2019-08-21 01:00:07 +02:00
#include <benchmark/benchmark.h>
#include "../sources/SIMDHelpers.h"
#include "../sources/Buffer.h"
#include <algorithm>
#include <random>
#include <numeric>
static void Dummy(benchmark::State& state) {
Buffer<float> buffer (state.range(0));
std::random_device rd { };
std::mt19937 gen { rd() };
std::uniform_real_distribution<float> dist { 1, 2 };
for (auto _ : state) {
auto fillValue = dist(gen);
benchmark::DoNotOptimize(fillValue);
}
}
static void Fill_float(benchmark::State& state) {
Buffer<float> buffer (state.range(0));
std::random_device rd { };
std::mt19937 gen { rd() };
std::uniform_real_distribution<float> dist { 1, 2 };
for (auto _ : state) {
fill<float, false>(buffer, dist(gen));
}
}
static void Fill_float_SSE(benchmark::State& state) {
Buffer<float> buffer (state.range(0));
std::random_device rd { };
std::mt19937 gen { rd() };
std::uniform_real_distribution<float> dist { 1, 2 };
for (auto _ : state) {
fill<float, true>(buffer, dist(gen));
}
}
static void Fill_double(benchmark::State& state) {
Buffer<double> buffer (state.range(0));
std::random_device rd { };
std::mt19937 gen { rd() };
std::uniform_real_distribution<double> dist { 1, 2 };
for (auto _ : state) {
fill<double>(buffer, dist(gen));
}
}
BENCHMARK(Dummy)->Range((2<<6), (2<<16));
BENCHMARK(Fill_float)->Range((2<<6), (2<<16));
BENCHMARK(Fill_float_SSE)->Range((2<<6), (2<<16));
BENCHMARK(Fill_double)->Range((2<<6), (2<<16));
BENCHMARK_MAIN();