зеркало из https://github.com/mozilla/gecko-dev.git
217 строки
7.8 KiB
C
217 строки
7.8 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include <immintrin.h> // AVX2
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#include "./aom_dsp_rtcd.h"
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#include "aom/aom_integer.h"
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void aom_sad32x32x4d_avx2(const uint8_t *src, int src_stride,
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const uint8_t *const ref[4], int ref_stride,
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uint32_t res[4]) {
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__m256i src_reg, ref0_reg, ref1_reg, ref2_reg, ref3_reg;
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__m256i sum_ref0, sum_ref1, sum_ref2, sum_ref3;
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__m256i sum_mlow, sum_mhigh;
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int i;
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const uint8_t *ref0, *ref1, *ref2, *ref3;
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ref0 = ref[0];
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ref1 = ref[1];
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ref2 = ref[2];
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ref3 = ref[3];
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sum_ref0 = _mm256_set1_epi16(0);
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sum_ref1 = _mm256_set1_epi16(0);
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sum_ref2 = _mm256_set1_epi16(0);
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sum_ref3 = _mm256_set1_epi16(0);
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for (i = 0; i < 32; i++) {
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// load src and all refs
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src_reg = _mm256_loadu_si256((const __m256i *)src);
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ref0_reg = _mm256_loadu_si256((const __m256i *)ref0);
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ref1_reg = _mm256_loadu_si256((const __m256i *)ref1);
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ref2_reg = _mm256_loadu_si256((const __m256i *)ref2);
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ref3_reg = _mm256_loadu_si256((const __m256i *)ref3);
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// sum of the absolute differences between every ref-i to src
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ref0_reg = _mm256_sad_epu8(ref0_reg, src_reg);
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ref1_reg = _mm256_sad_epu8(ref1_reg, src_reg);
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ref2_reg = _mm256_sad_epu8(ref2_reg, src_reg);
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ref3_reg = _mm256_sad_epu8(ref3_reg, src_reg);
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// sum every ref-i
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sum_ref0 = _mm256_add_epi32(sum_ref0, ref0_reg);
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sum_ref1 = _mm256_add_epi32(sum_ref1, ref1_reg);
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sum_ref2 = _mm256_add_epi32(sum_ref2, ref2_reg);
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sum_ref3 = _mm256_add_epi32(sum_ref3, ref3_reg);
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src += src_stride;
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ref0 += ref_stride;
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ref1 += ref_stride;
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ref2 += ref_stride;
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ref3 += ref_stride;
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}
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{
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__m128i sum;
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// in sum_ref-i the result is saved in the first 4 bytes
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// the other 4 bytes are zeroed.
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// sum_ref1 and sum_ref3 are shifted left by 4 bytes
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sum_ref1 = _mm256_slli_si256(sum_ref1, 4);
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sum_ref3 = _mm256_slli_si256(sum_ref3, 4);
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// merge sum_ref0 and sum_ref1 also sum_ref2 and sum_ref3
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sum_ref0 = _mm256_or_si256(sum_ref0, sum_ref1);
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sum_ref2 = _mm256_or_si256(sum_ref2, sum_ref3);
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// merge every 64 bit from each sum_ref-i
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sum_mlow = _mm256_unpacklo_epi64(sum_ref0, sum_ref2);
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sum_mhigh = _mm256_unpackhi_epi64(sum_ref0, sum_ref2);
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// add the low 64 bit to the high 64 bit
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sum_mlow = _mm256_add_epi32(sum_mlow, sum_mhigh);
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// add the low 128 bit to the high 128 bit
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sum = _mm_add_epi32(_mm256_castsi256_si128(sum_mlow),
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_mm256_extractf128_si256(sum_mlow, 1));
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_mm_storeu_si128((__m128i *)(res), sum);
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}
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_mm256_zeroupper();
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}
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void aom_sad64x64x4d_avx2(const uint8_t *src, int src_stride,
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const uint8_t *const ref[4], int ref_stride,
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uint32_t res[4]) {
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__m256i src_reg, srcnext_reg, ref0_reg, ref0next_reg;
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__m256i ref1_reg, ref1next_reg, ref2_reg, ref2next_reg;
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__m256i ref3_reg, ref3next_reg;
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__m256i sum_ref0, sum_ref1, sum_ref2, sum_ref3;
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__m256i sum_mlow, sum_mhigh;
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int i;
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const uint8_t *ref0, *ref1, *ref2, *ref3;
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ref0 = ref[0];
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ref1 = ref[1];
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ref2 = ref[2];
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ref3 = ref[3];
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sum_ref0 = _mm256_set1_epi16(0);
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sum_ref1 = _mm256_set1_epi16(0);
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sum_ref2 = _mm256_set1_epi16(0);
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sum_ref3 = _mm256_set1_epi16(0);
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for (i = 0; i < 64; i++) {
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// load 64 bytes from src and all refs
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src_reg = _mm256_loadu_si256((const __m256i *)src);
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srcnext_reg = _mm256_loadu_si256((const __m256i *)(src + 32));
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ref0_reg = _mm256_loadu_si256((const __m256i *)ref0);
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ref0next_reg = _mm256_loadu_si256((const __m256i *)(ref0 + 32));
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ref1_reg = _mm256_loadu_si256((const __m256i *)ref1);
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ref1next_reg = _mm256_loadu_si256((const __m256i *)(ref1 + 32));
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ref2_reg = _mm256_loadu_si256((const __m256i *)ref2);
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ref2next_reg = _mm256_loadu_si256((const __m256i *)(ref2 + 32));
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ref3_reg = _mm256_loadu_si256((const __m256i *)ref3);
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ref3next_reg = _mm256_loadu_si256((const __m256i *)(ref3 + 32));
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// sum of the absolute differences between every ref-i to src
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ref0_reg = _mm256_sad_epu8(ref0_reg, src_reg);
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ref1_reg = _mm256_sad_epu8(ref1_reg, src_reg);
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ref2_reg = _mm256_sad_epu8(ref2_reg, src_reg);
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ref3_reg = _mm256_sad_epu8(ref3_reg, src_reg);
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ref0next_reg = _mm256_sad_epu8(ref0next_reg, srcnext_reg);
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ref1next_reg = _mm256_sad_epu8(ref1next_reg, srcnext_reg);
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ref2next_reg = _mm256_sad_epu8(ref2next_reg, srcnext_reg);
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ref3next_reg = _mm256_sad_epu8(ref3next_reg, srcnext_reg);
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// sum every ref-i
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sum_ref0 = _mm256_add_epi32(sum_ref0, ref0_reg);
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sum_ref1 = _mm256_add_epi32(sum_ref1, ref1_reg);
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sum_ref2 = _mm256_add_epi32(sum_ref2, ref2_reg);
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sum_ref3 = _mm256_add_epi32(sum_ref3, ref3_reg);
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sum_ref0 = _mm256_add_epi32(sum_ref0, ref0next_reg);
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sum_ref1 = _mm256_add_epi32(sum_ref1, ref1next_reg);
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sum_ref2 = _mm256_add_epi32(sum_ref2, ref2next_reg);
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sum_ref3 = _mm256_add_epi32(sum_ref3, ref3next_reg);
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src += src_stride;
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ref0 += ref_stride;
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ref1 += ref_stride;
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ref2 += ref_stride;
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ref3 += ref_stride;
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}
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{
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__m128i sum;
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// in sum_ref-i the result is saved in the first 4 bytes
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// the other 4 bytes are zeroed.
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// sum_ref1 and sum_ref3 are shifted left by 4 bytes
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sum_ref1 = _mm256_slli_si256(sum_ref1, 4);
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sum_ref3 = _mm256_slli_si256(sum_ref3, 4);
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// merge sum_ref0 and sum_ref1 also sum_ref2 and sum_ref3
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sum_ref0 = _mm256_or_si256(sum_ref0, sum_ref1);
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sum_ref2 = _mm256_or_si256(sum_ref2, sum_ref3);
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// merge every 64 bit from each sum_ref-i
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sum_mlow = _mm256_unpacklo_epi64(sum_ref0, sum_ref2);
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sum_mhigh = _mm256_unpackhi_epi64(sum_ref0, sum_ref2);
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// add the low 64 bit to the high 64 bit
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sum_mlow = _mm256_add_epi32(sum_mlow, sum_mhigh);
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// add the low 128 bit to the high 128 bit
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sum = _mm_add_epi32(_mm256_castsi256_si128(sum_mlow),
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_mm256_extractf128_si256(sum_mlow, 1));
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_mm_storeu_si128((__m128i *)(res), sum);
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}
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_mm256_zeroupper();
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}
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void aom_sad32x64x4d_avx2(const uint8_t *src, int src_stride,
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const uint8_t *const ref[4], int ref_stride,
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uint32_t res[4]) {
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const uint8_t *rf[4];
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uint32_t sum0[4];
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uint32_t sum1[4];
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rf[0] = ref[0];
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rf[1] = ref[1];
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rf[2] = ref[2];
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rf[3] = ref[3];
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aom_sad32x32x4d_avx2(src, src_stride, rf, ref_stride, sum0);
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src += src_stride << 5;
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rf[0] += ref_stride << 5;
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rf[1] += ref_stride << 5;
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rf[2] += ref_stride << 5;
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rf[3] += ref_stride << 5;
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aom_sad32x32x4d_avx2(src, src_stride, rf, ref_stride, sum1);
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res[0] = sum0[0] + sum1[0];
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res[1] = sum0[1] + sum1[1];
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res[2] = sum0[2] + sum1[2];
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res[3] = sum0[3] + sum1[3];
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}
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void aom_sad64x32x4d_avx2(const uint8_t *src, int src_stride,
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const uint8_t *const ref[4], int ref_stride,
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uint32_t res[4]) {
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const uint8_t *rf[4];
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uint32_t sum0[4];
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uint32_t sum1[4];
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unsigned int half_width = 32;
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rf[0] = ref[0];
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rf[1] = ref[1];
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rf[2] = ref[2];
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rf[3] = ref[3];
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aom_sad32x32x4d_avx2(src, src_stride, rf, ref_stride, sum0);
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src += half_width;
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rf[0] += half_width;
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rf[1] += half_width;
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rf[2] += half_width;
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rf[3] += half_width;
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aom_sad32x32x4d_avx2(src, src_stride, rf, ref_stride, sum1);
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res[0] = sum0[0] + sum1[0];
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res[1] = sum0[1] + sum1[1];
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res[2] = sum0[2] + sum1[2];
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res[3] = sum0[3] + sum1[3];
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}
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