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c018bae807
git ls-files | grep -e "\(\.h\|\.cc\)$" | grep -e "^modules/" | xargs clang-format -i ; git cl format after landing: add to .git-blame-ignore-revs Bug: webrtc:15082 Change-Id: I2c3cd28740062794f8c10e39d8406aadb9e9a35a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/301620 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Harald Alvestrand <hta@webrtc.org> Auto-Submit: Jared Siskin <jtsiskin@meta.com> Cr-Commit-Position: refs/heads/main@{#39901}
81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
/*
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* Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <immintrin.h>
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#include <math.h>
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#include "api/array_view.h"
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#include "modules/audio_processing/aec3/vector_math.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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namespace aec3 {
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// Elementwise square root.
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void VectorMath::SqrtAVX2(rtc::ArrayView<float> x) {
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const int x_size = static_cast<int>(x.size());
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const int vector_limit = x_size >> 3;
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int j = 0;
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for (; j < vector_limit * 8; j += 8) {
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__m256 g = _mm256_loadu_ps(&x[j]);
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g = _mm256_sqrt_ps(g);
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_mm256_storeu_ps(&x[j], g);
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}
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for (; j < x_size; ++j) {
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x[j] = sqrtf(x[j]);
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}
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}
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// Elementwise vector multiplication z = x * y.
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void VectorMath::MultiplyAVX2(rtc::ArrayView<const float> x,
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rtc::ArrayView<const float> y,
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rtc::ArrayView<float> z) {
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RTC_DCHECK_EQ(z.size(), x.size());
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RTC_DCHECK_EQ(z.size(), y.size());
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const int x_size = static_cast<int>(x.size());
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const int vector_limit = x_size >> 3;
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int j = 0;
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for (; j < vector_limit * 8; j += 8) {
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const __m256 x_j = _mm256_loadu_ps(&x[j]);
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const __m256 y_j = _mm256_loadu_ps(&y[j]);
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const __m256 z_j = _mm256_mul_ps(x_j, y_j);
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_mm256_storeu_ps(&z[j], z_j);
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}
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for (; j < x_size; ++j) {
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z[j] = x[j] * y[j];
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}
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}
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// Elementwise vector accumulation z += x.
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void VectorMath::AccumulateAVX2(rtc::ArrayView<const float> x,
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rtc::ArrayView<float> z) {
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RTC_DCHECK_EQ(z.size(), x.size());
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const int x_size = static_cast<int>(x.size());
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const int vector_limit = x_size >> 3;
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int j = 0;
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for (; j < vector_limit * 8; j += 8) {
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const __m256 x_j = _mm256_loadu_ps(&x[j]);
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__m256 z_j = _mm256_loadu_ps(&z[j]);
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z_j = _mm256_add_ps(x_j, z_j);
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_mm256_storeu_ps(&z[j], z_j);
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}
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for (; j < x_size; ++j) {
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z[j] += x[j];
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}
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}
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} // namespace aec3
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} // namespace webrtc
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