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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include "base/cpu.h"
#include "base/memory/aligned_memory.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "media/base/vector_math.h"
#include "media/base/vector_math_testing.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/perf/perf_result_reporter.h"
using base::TimeTicks;
using std::fill;
namespace {
perf_test::PerfResultReporter SetUpReporter(const std::string& story_name) {
perf_test::PerfResultReporter reporter("vector_math", story_name);
reporter.RegisterImportantMetric("_fmac", "runs/s");
reporter.RegisterImportantMetric("_fmul", "runs/s");
reporter.RegisterImportantMetric("_ewma_and_max_power", "runs/s");
return reporter;
}
} // namespace
namespace media {
static const int kBenchmarkIterations = 200000;
static const int kEWMABenchmarkIterations = 50000;
static const float kScale = 0.5;
static const int kVectorSize = 8192;
class VectorMathPerfTest : public testing::Test {
public:
VectorMathPerfTest() {
// Initialize input and output vectors.
input_vector_.reset(static_cast<float*>(base::AlignedAlloc(
sizeof(float) * kVectorSize, vector_math::kRequiredAlignment)));
output_vector_.reset(static_cast<float*>(base::AlignedAlloc(
sizeof(float) * kVectorSize, vector_math::kRequiredAlignment)));
fill(input_vector_.get(), input_vector_.get() + kVectorSize, 1.0f);
fill(output_vector_.get(), output_vector_.get() + kVectorSize, 0.0f);
}
VectorMathPerfTest(const VectorMathPerfTest&) = delete;
VectorMathPerfTest& operator=(const VectorMathPerfTest&) = delete;
void RunBenchmark(void (*fn)(const float[], float, int, float[]),
bool aligned,
const std::string& metric_suffix,
const std::string& trace_name) {
TimeTicks start = TimeTicks::Now();
for (int i = 0; i < kBenchmarkIterations; ++i) {
fn(input_vector_.get(),
kScale,
kVectorSize - (aligned ? 0 : 1),
output_vector_.get());
}
double total_time_seconds = (TimeTicks::Now() - start).InSecondsF();
perf_test::PerfResultReporter reporter = SetUpReporter(trace_name);
reporter.AddResult(metric_suffix,
kBenchmarkIterations / total_time_seconds);
}
void RunBenchmark(
std::pair<float, float> (*fn)(float, const float[], int, float),
int len,
const std::string& metric_suffix,
const std::string& trace_name) {
TimeTicks start = TimeTicks::Now();
for (int i = 0; i < kEWMABenchmarkIterations; ++i) {
fn(0.5f, input_vector_.get(), len, 0.1f);
}
double total_time_seconds = (TimeTicks::Now() - start).InSecondsF();
perf_test::PerfResultReporter reporter = SetUpReporter(trace_name);
reporter.AddResult(metric_suffix,
kEWMABenchmarkIterations / total_time_seconds);
}
protected:
std::unique_ptr<float, base::AlignedFreeDeleter> input_vector_;
std::unique_ptr<float, base::AlignedFreeDeleter> output_vector_;
};
// Benchmarks for each optimized vector_math::FMAC() method.
// Benchmark FMAC_C().
TEST_F(VectorMathPerfTest, FMAC_unoptimized) {
RunBenchmark(vector_math::FMAC_C, true, "_fmac", "unoptimized");
}
// Benchmark FMAC_FUNC() with unaligned size.
TEST_F(VectorMathPerfTest, FMAC_optimized_unaligned) {
ASSERT_NE((kVectorSize - 1) % (vector_math::kRequiredAlignment /
sizeof(float)), 0U);
#if defined(ARCH_CPU_X86_FAMILY)
base::CPU cpu;
if (cpu.has_avx2() && cpu.has_fma3()) {
RunBenchmark(vector_math::FMAC_AVX2, false, "_fmac", "optimized_unaligned");
} else if (cpu.has_sse2()) {
RunBenchmark(vector_math::FMAC_SSE, false, "_fmac", "optimized_unaligned");
}
#elif defined(ARCH_CPU_ARM_FAMILY) && defined(USE_NEON)
RunBenchmark(vector_math::FMAC_NEON, false, "_fmac", "optimized_unaligned");
#endif
}
// Benchmark FMAC_FUNC() with aligned size.
TEST_F(VectorMathPerfTest, FMAC_optimized_aligned) {
ASSERT_EQ(kVectorSize % (vector_math::kRequiredAlignment / sizeof(float)),
0U);
#if defined(ARCH_CPU_X86_FAMILY)
base::CPU cpu;
if (cpu.has_avx2() && cpu.has_fma3()) {
RunBenchmark(vector_math::FMAC_AVX2, true, "_fmac", "optimized_aligned");
} else if (cpu.has_sse2()) {
RunBenchmark(vector_math::FMAC_SSE, true, "_fmac", "optimized_aligned");
}
#elif defined(ARCH_CPU_ARM_FAMILY) && defined(USE_NEON)
RunBenchmark(vector_math::FMAC_NEON, true, "_fmac", "optimized_aligned");
#endif
}
// Benchmarks for each optimized vector_math::FMUL() method.
// Benchmark FMUL_C().
TEST_F(VectorMathPerfTest, FMUL_unoptimized) {
RunBenchmark(vector_math::FMUL_C, true, "_fmul", "unoptimized");
}
// Benchmark FMUL_FUNC() with unaligned size.
TEST_F(VectorMathPerfTest, FMUL_optimized_unaligned) {
ASSERT_NE((kVectorSize - 1) % (vector_math::kRequiredAlignment /
sizeof(float)), 0U);
#if defined(ARCH_CPU_X86_FAMILY)
base::CPU cpu;
if (cpu.has_avx2()) {
RunBenchmark(vector_math::FMUL_AVX2, false, "_fmul", "optimized_unaligned");
} else if (cpu.has_sse2()) {
RunBenchmark(vector_math::FMUL_SSE, false, "_fmul", "optimized_unaligned");
}
#elif defined(ARCH_CPU_ARM_FAMILY) && defined(USE_NEON)
RunBenchmark(vector_math::FMUL_NEON, false, "_fmul", "optimized_unaligned");
#endif
}
// Benchmark FMUL_FUNC() with aligned size.
TEST_F(VectorMathPerfTest, FMUL_optimized_aligned) {
ASSERT_EQ(kVectorSize % (vector_math::kRequiredAlignment / sizeof(float)),
0U);
#if defined(ARCH_CPU_X86_FAMILY)
base::CPU cpu;
if (cpu.has_avx2()) {
RunBenchmark(vector_math::FMUL_AVX2, true, "_fmul", "optimized_aligned");
} else if (cpu.has_sse2()) {
RunBenchmark(vector_math::FMUL_SSE, true, "_fmul", "optimized_aligned");
}
#elif defined(ARCH_CPU_ARM_FAMILY) && defined(USE_NEON)
RunBenchmark(vector_math::FMUL_NEON, true, "_fmul", "optimized_aligned");
#endif
}
// Benchmarks for each optimized vector_math::EWMAAndMaxPower() method.
// Benchmark EWMAAndMaxPower_C().
TEST_F(VectorMathPerfTest, EWMAAndMaxPower_unoptimized) {
RunBenchmark(vector_math::EWMAAndMaxPower_C, kVectorSize,
"_ewma_and_max_power", "unoptimized");
}
// Benchmark EWMAAndMaxPower_FUNC() with unaligned size.
TEST_F(VectorMathPerfTest, EWMAAndMaxPower_optimized_unaligned) {
ASSERT_NE((kVectorSize - 1) % (vector_math::kRequiredAlignment /
sizeof(float)), 0U);
#if defined(ARCH_CPU_X86_FAMILY)
base::CPU cpu;
if (cpu.has_avx2() && cpu.has_fma3()) {
RunBenchmark(vector_math::EWMAAndMaxPower_AVX2, kVectorSize - 1,
"_ewma_and_max_power", "optimized_unaligned");
} else if (cpu.has_sse2()) {
RunBenchmark(vector_math::EWMAAndMaxPower_SSE, kVectorSize - 1,
"_ewma_and_max_power", "optimized_unaligned");
}
#elif defined(ARCH_CPU_ARM_FAMILY) && defined(USE_NEON)
RunBenchmark(vector_math::EWMAAndMaxPower_NEON, kVectorSize - 1,
"_ewma_and_max_power", "optimized_unaligned");
#endif
}
// Benchmark EWMAAndMaxPower_FUNC() with aligned size.
TEST_F(VectorMathPerfTest, EWMAAndMaxPower_optimized_aligned) {
ASSERT_EQ(kVectorSize % (vector_math::kRequiredAlignment / sizeof(float)),
0U);
#if defined(ARCH_CPU_X86_FAMILY)
base::CPU cpu;
if (cpu.has_avx2() && cpu.has_fma3()) {
RunBenchmark(vector_math::EWMAAndMaxPower_AVX2, kVectorSize,
"_ewma_and_max_power", "optimized_aligned");
} else if (cpu.has_sse2()) {
RunBenchmark(vector_math::EWMAAndMaxPower_SSE, kVectorSize,
"_ewma_and_max_power", "optimized_aligned");
}
#elif defined(ARCH_CPU_ARM_FAMILY) && defined(USE_NEON)
RunBenchmark(vector_math::EWMAAndMaxPower_NEON, kVectorSize,
"_ewma_and_max_power", "optimized_aligned");
#endif
}
} // namespace media
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