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74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
/* Spa */
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/* SPDX-FileCopyrightText: Copyright © 2019 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#include "resample-native-impl.h"
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#include <assert.h>
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#include <immintrin.h>
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static inline void inner_product_avx(float *d, const float * SPA_RESTRICT s,
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const float * SPA_RESTRICT taps, uint32_t n_taps)
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{
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__m256 sy[2] = { _mm256_setzero_ps(), _mm256_setzero_ps() }, ty;
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__m128 sx[2], tx;
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uint32_t i = 0;
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uint32_t n_taps4 = n_taps & ~0xf;
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for (; i < n_taps4; i += 16) {
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ty = _mm256_loadu_ps(s + i + 0);
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sy[0] = _mm256_fmadd_ps(ty, _mm256_load_ps(taps + i + 0), sy[0]);
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ty = _mm256_loadu_ps(s + i + 8);
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sy[1] = _mm256_fmadd_ps(ty, _mm256_load_ps(taps + i + 8), sy[1]);
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}
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sy[0] = _mm256_add_ps(sy[1], sy[0]);
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sx[1] = _mm256_extractf128_ps(sy[0], 1);
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sx[0] = _mm256_extractf128_ps(sy[0], 0);
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for (; i < n_taps; i += 8) {
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tx = _mm_loadu_ps(s + i + 0);
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sx[0] = _mm_fmadd_ps(tx, _mm_load_ps(taps + i + 0), sx[0]);
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tx = _mm_loadu_ps(s + i + 4);
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sx[1] = _mm_fmadd_ps(tx, _mm_load_ps(taps + i + 4), sx[1]);
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}
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sx[0] = _mm_add_ps(sx[0], sx[1]);
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sx[0] = _mm_hadd_ps(sx[0], sx[0]);
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sx[0] = _mm_hadd_ps(sx[0], sx[0]);
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_mm_store_ss(d, sx[0]);
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}
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static inline void inner_product_ip_avx(float *d, const float * SPA_RESTRICT s,
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const float * SPA_RESTRICT t0, const float * SPA_RESTRICT t1, float x,
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uint32_t n_taps)
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{
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__m256 sy[2] = { _mm256_setzero_ps(), _mm256_setzero_ps() }, ty;
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__m128 sx[2], tx;
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uint32_t i, n_taps4 = n_taps & ~0xf;
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for (i = 0; i < n_taps4; i += 16) {
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ty = _mm256_loadu_ps(s + i + 0);
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sy[0] = _mm256_fmadd_ps(ty, _mm256_load_ps(t0 + i + 0), sy[0]);
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sy[1] = _mm256_fmadd_ps(ty, _mm256_load_ps(t1 + i + 0), sy[1]);
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ty = _mm256_loadu_ps(s + i + 8);
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sy[0] = _mm256_fmadd_ps(ty, _mm256_load_ps(t0 + i + 8), sy[0]);
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sy[1] = _mm256_fmadd_ps(ty, _mm256_load_ps(t1 + i + 8), sy[1]);
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}
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sx[0] = _mm_add_ps(_mm256_extractf128_ps(sy[0], 0), _mm256_extractf128_ps(sy[0], 1));
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sx[1] = _mm_add_ps(_mm256_extractf128_ps(sy[1], 0), _mm256_extractf128_ps(sy[1], 1));
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for (; i < n_taps; i += 8) {
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tx = _mm_loadu_ps(s + i + 0);
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sx[0] = _mm_fmadd_ps(tx, _mm_load_ps(t0 + i + 0), sx[0]);
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sx[1] = _mm_fmadd_ps(tx, _mm_load_ps(t1 + i + 0), sx[1]);
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tx = _mm_loadu_ps(s + i + 4);
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sx[0] = _mm_fmadd_ps(tx, _mm_load_ps(t0 + i + 4), sx[0]);
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sx[1] = _mm_fmadd_ps(tx, _mm_load_ps(t1 + i + 4), sx[1]);
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}
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sx[1] = _mm_mul_ps(_mm_sub_ps(sx[1], sx[0]), _mm_load1_ps(&x));
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sx[0] = _mm_add_ps(sx[0], sx[1]);
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sx[0] = _mm_hadd_ps(sx[0], sx[0]);
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sx[0] = _mm_hadd_ps(sx[0], sx[0]);
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_mm_store_ss(d, sx[0]);
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}
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MAKE_RESAMPLER_FULL(avx);
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MAKE_RESAMPLER_INTER(avx);
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