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80 lines
2.5 KiB
80 lines
2.5 KiB
/*
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* Copyright 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <array>
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#include <climits>
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#include <cstdlib>
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#include <random>
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#include <vector>
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#include <benchmark/benchmark.h>
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#include <audio_utils/intrinsic_utils.h>
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#include <audio_utils/format.h>
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static void BM_Intrinsic(benchmark::State& state) {
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using D = float;
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using namespace android::audio_utils::intrinsics;
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constexpr size_t SIMD_LENGTH = 4;
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// Possible testing types:
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using vec = android::audio_utils::intrinsics::internal_array_t<D, SIMD_LENGTH>;
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//using vec = float32x4_t;
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//using vec = float32x4x4_t;
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constexpr size_t DATA_SIZE = 1024;
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D a[DATA_SIZE];
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D b[DATA_SIZE];
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D c[DATA_SIZE];
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D d[DATA_SIZE];
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constexpr std::minstd_rand::result_type SEED = 42; // arbitrary choice.
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std::minstd_rand gen(SEED);
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const D amplitude = 1.0f;
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std::uniform_real_distribution<> dis(-amplitude, amplitude);
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for (size_t i = 0; i < DATA_SIZE; ++i) {
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a[i] = dis(gen);
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b[i] = dis(gen);
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c[i] = dis(gen);
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}
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while (state.KeepRunning()) {
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for (size_t i = 0; i < DATA_SIZE; i += sizeof(vec) / sizeof(D)) {
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const vec av = vld1<vec>(a + i);
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const vec bv = vld1<vec>(b + i);
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const vec cv = vld1<vec>(c + i);
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const vec dv = vmla(cv, av, bv);
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vst1(d + i, dv);
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}
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benchmark::DoNotOptimize(d[0]);
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benchmark::ClobberMemory();
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}
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//fprintf(stderr, "%f: %f %f\n %f", d[0], c[0], a[0], b[0]);
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state.SetComplexityN(state.range(0));
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}
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// A simple test using the VMLA intrinsic.
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// One can alter either the intrinsic code or the compilation flags to see the benefit.
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// Recommend using objdump to view the assembly.
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static void BM_IntrinsicArgs(benchmark::internal::Benchmark* b) {
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for (int k = 0; k < 2; k++) // 0 for normal random data, 1 for subnormal random data
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b->Args({k});
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}
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BENCHMARK(BM_Intrinsic)->Apply(BM_IntrinsicArgs);
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BENCHMARK_MAIN();
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