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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/aom_dsp/x86/sum_squares_avx2.c | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/x86/sum_squares_avx2.c b/third_party/aom/aom_dsp/x86/sum_squares_avx2.c new file mode 100644 index 0000000000..89b9b824bf --- /dev/null +++ b/third_party/aom/aom_dsp/x86/sum_squares_avx2.c @@ -0,0 +1,326 @@ +/* + * Copyright (c) 2018, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include <immintrin.h> +#include <smmintrin.h> + +#include "aom_dsp/x86/synonyms.h" +#include "aom_dsp/x86/synonyms_avx2.h" +#include "aom_dsp/x86/sum_squares_sse2.h" +#include "config/aom_dsp_rtcd.h" + +static uint64_t aom_sum_squares_2d_i16_nxn_avx2(const int16_t *src, int stride, + int width, int height) { + uint64_t result; + __m256i v_acc_q = _mm256_setzero_si256(); + const __m256i v_zext_mask_q = yy_set1_64_from_32i(~0); + for (int col = 0; col < height; col += 4) { + __m256i v_acc_d = _mm256_setzero_si256(); + for (int row = 0; row < width; row += 16) { + const int16_t *tempsrc = src + row; + const __m256i v_val_0_w = + _mm256_loadu_si256((const __m256i *)(tempsrc + 0 * stride)); + const __m256i v_val_1_w = + _mm256_loadu_si256((const __m256i *)(tempsrc + 1 * stride)); + const __m256i v_val_2_w = + _mm256_loadu_si256((const __m256i *)(tempsrc + 2 * stride)); + const __m256i v_val_3_w = + _mm256_loadu_si256((const __m256i *)(tempsrc + 3 * stride)); + + const __m256i v_sq_0_d = _mm256_madd_epi16(v_val_0_w, v_val_0_w); + const __m256i v_sq_1_d = _mm256_madd_epi16(v_val_1_w, v_val_1_w); + const __m256i v_sq_2_d = _mm256_madd_epi16(v_val_2_w, v_val_2_w); + const __m256i v_sq_3_d = _mm256_madd_epi16(v_val_3_w, v_val_3_w); + + const __m256i v_sum_01_d = _mm256_add_epi32(v_sq_0_d, v_sq_1_d); + const __m256i v_sum_23_d = _mm256_add_epi32(v_sq_2_d, v_sq_3_d); + const __m256i v_sum_0123_d = _mm256_add_epi32(v_sum_01_d, v_sum_23_d); + + v_acc_d = _mm256_add_epi32(v_acc_d, v_sum_0123_d); + } + v_acc_q = + _mm256_add_epi64(v_acc_q, _mm256_and_si256(v_acc_d, v_zext_mask_q)); + v_acc_q = _mm256_add_epi64(v_acc_q, _mm256_srli_epi64(v_acc_d, 32)); + src += 4 * stride; + } + __m128i lower_64_2_Value = _mm256_castsi256_si128(v_acc_q); + __m128i higher_64_2_Value = _mm256_extracti128_si256(v_acc_q, 1); + __m128i result_64_2_int = _mm_add_epi64(lower_64_2_Value, higher_64_2_Value); + + result_64_2_int = _mm_add_epi64( + result_64_2_int, _mm_unpackhi_epi64(result_64_2_int, result_64_2_int)); + + xx_storel_64(&result, result_64_2_int); + + return result; +} + +uint64_t aom_sum_squares_2d_i16_avx2(const int16_t *src, int stride, int width, + int height) { + if (LIKELY(width == 4 && height == 4)) { + return aom_sum_squares_2d_i16_4x4_sse2(src, stride); + } else if (LIKELY(width == 4 && (height & 3) == 0)) { + return aom_sum_squares_2d_i16_4xn_sse2(src, stride, height); + } else if (LIKELY(width == 8 && (height & 3) == 0)) { + return aom_sum_squares_2d_i16_nxn_sse2(src, stride, width, height); + } else if (LIKELY(((width & 15) == 0) && ((height & 3) == 0))) { + return aom_sum_squares_2d_i16_nxn_avx2(src, stride, width, height); + } else { + return aom_sum_squares_2d_i16_c(src, stride, width, height); + } +} + +static uint64_t aom_sum_sse_2d_i16_nxn_avx2(const int16_t *src, int stride, + int width, int height, int *sum) { + uint64_t result; + const __m256i zero_reg = _mm256_setzero_si256(); + const __m256i one_reg = _mm256_set1_epi16(1); + + __m256i v_sse_total = zero_reg; + __m256i v_sum_total = zero_reg; + + for (int col = 0; col < height; col += 4) { + __m256i v_sse_row = zero_reg; + for (int row = 0; row < width; row += 16) { + const int16_t *tempsrc = src + row; + const __m256i v_val_0_w = + _mm256_loadu_si256((const __m256i *)(tempsrc + 0 * stride)); + const __m256i v_val_1_w = + _mm256_loadu_si256((const __m256i *)(tempsrc + 1 * stride)); + const __m256i v_val_2_w = + _mm256_loadu_si256((const __m256i *)(tempsrc + 2 * stride)); + const __m256i v_val_3_w = + _mm256_loadu_si256((const __m256i *)(tempsrc + 3 * stride)); + + const __m256i v_sum_01 = _mm256_add_epi16(v_val_0_w, v_val_1_w); + const __m256i v_sum_23 = _mm256_add_epi16(v_val_2_w, v_val_3_w); + __m256i v_sum_0123 = _mm256_add_epi16(v_sum_01, v_sum_23); + v_sum_0123 = _mm256_madd_epi16(v_sum_0123, one_reg); + v_sum_total = _mm256_add_epi32(v_sum_total, v_sum_0123); + + const __m256i v_sq_0_d = _mm256_madd_epi16(v_val_0_w, v_val_0_w); + const __m256i v_sq_1_d = _mm256_madd_epi16(v_val_1_w, v_val_1_w); + const __m256i v_sq_2_d = _mm256_madd_epi16(v_val_2_w, v_val_2_w); + const __m256i v_sq_3_d = _mm256_madd_epi16(v_val_3_w, v_val_3_w); + const __m256i v_sq_01_d = _mm256_add_epi32(v_sq_0_d, v_sq_1_d); + const __m256i v_sq_23_d = _mm256_add_epi32(v_sq_2_d, v_sq_3_d); + const __m256i v_sq_0123_d = _mm256_add_epi32(v_sq_01_d, v_sq_23_d); + v_sse_row = _mm256_add_epi32(v_sse_row, v_sq_0123_d); + } + const __m256i v_sse_row_low = _mm256_unpacklo_epi32(v_sse_row, zero_reg); + const __m256i v_sse_row_hi = _mm256_unpackhi_epi32(v_sse_row, zero_reg); + v_sse_row = _mm256_add_epi64(v_sse_row_low, v_sse_row_hi); + v_sse_total = _mm256_add_epi64(v_sse_total, v_sse_row); + src += 4 * stride; + } + + const __m128i v_sum_total_low = _mm256_castsi256_si128(v_sum_total); + const __m128i v_sum_total_hi = _mm256_extracti128_si256(v_sum_total, 1); + __m128i sum_128bit = _mm_add_epi32(v_sum_total_hi, v_sum_total_low); + sum_128bit = _mm_add_epi32(sum_128bit, _mm_srli_si128(sum_128bit, 8)); + sum_128bit = _mm_add_epi32(sum_128bit, _mm_srli_si128(sum_128bit, 4)); + *sum += _mm_cvtsi128_si32(sum_128bit); + + __m128i v_sse_total_lo = _mm256_castsi256_si128(v_sse_total); + __m128i v_sse_total_hi = _mm256_extracti128_si256(v_sse_total, 1); + __m128i sse_128bit = _mm_add_epi64(v_sse_total_lo, v_sse_total_hi); + + sse_128bit = + _mm_add_epi64(sse_128bit, _mm_unpackhi_epi64(sse_128bit, sse_128bit)); + + xx_storel_64(&result, sse_128bit); + + return result; +} + +uint64_t aom_sum_sse_2d_i16_avx2(const int16_t *src, int src_stride, int width, + int height, int *sum) { + if (LIKELY(width == 4 && height == 4)) { + return aom_sum_sse_2d_i16_4x4_sse2(src, src_stride, sum); + } else if (LIKELY(width == 4 && (height & 3) == 0)) { + return aom_sum_sse_2d_i16_4xn_sse2(src, src_stride, height, sum); + } else if (LIKELY(width == 8 && (height & 3) == 0)) { + return aom_sum_sse_2d_i16_nxn_sse2(src, src_stride, width, height, sum); + } else if (LIKELY(((width & 15) == 0) && ((height & 3) == 0))) { + return aom_sum_sse_2d_i16_nxn_avx2(src, src_stride, width, height, sum); + } else { + return aom_sum_sse_2d_i16_c(src, src_stride, width, height, sum); + } +} + +// Accumulate sum of 16-bit elements in the vector +static AOM_INLINE int32_t mm256_accumulate_epi16(__m256i vec_a) { + __m128i vtmp1 = _mm256_extracti128_si256(vec_a, 1); + __m128i vtmp2 = _mm256_castsi256_si128(vec_a); + vtmp1 = _mm_add_epi16(vtmp1, vtmp2); + vtmp2 = _mm_srli_si128(vtmp1, 8); + vtmp1 = _mm_add_epi16(vtmp1, vtmp2); + vtmp2 = _mm_srli_si128(vtmp1, 4); + vtmp1 = _mm_add_epi16(vtmp1, vtmp2); + vtmp2 = _mm_srli_si128(vtmp1, 2); + vtmp1 = _mm_add_epi16(vtmp1, vtmp2); + return _mm_extract_epi16(vtmp1, 0); +} + +// Accumulate sum of 32-bit elements in the vector +static AOM_INLINE int32_t mm256_accumulate_epi32(__m256i vec_a) { + __m128i vtmp1 = _mm256_extracti128_si256(vec_a, 1); + __m128i vtmp2 = _mm256_castsi256_si128(vec_a); + vtmp1 = _mm_add_epi32(vtmp1, vtmp2); + vtmp2 = _mm_srli_si128(vtmp1, 8); + vtmp1 = _mm_add_epi32(vtmp1, vtmp2); + vtmp2 = _mm_srli_si128(vtmp1, 4); + vtmp1 = _mm_add_epi32(vtmp1, vtmp2); + return _mm_cvtsi128_si32(vtmp1); +} + +uint64_t aom_var_2d_u8_avx2(uint8_t *src, int src_stride, int width, + int height) { + uint8_t *srcp; + uint64_t s = 0, ss = 0; + __m256i vzero = _mm256_setzero_si256(); + __m256i v_acc_sum = vzero; + __m256i v_acc_sqs = vzero; + int i, j; + + // Process 32 elements in a row + for (i = 0; i < width - 31; i += 32) { + srcp = src + i; + // Process 8 columns at a time + for (j = 0; j < height - 7; j += 8) { + __m256i vsrc[8]; + for (int k = 0; k < 8; k++) { + vsrc[k] = _mm256_loadu_si256((__m256i *)srcp); + srcp += src_stride; + } + for (int k = 0; k < 8; k++) { + __m256i vsrc0 = _mm256_unpacklo_epi8(vsrc[k], vzero); + __m256i vsrc1 = _mm256_unpackhi_epi8(vsrc[k], vzero); + v_acc_sum = _mm256_add_epi16(v_acc_sum, vsrc0); + v_acc_sum = _mm256_add_epi16(v_acc_sum, vsrc1); + + __m256i vsqs0 = _mm256_madd_epi16(vsrc0, vsrc0); + __m256i vsqs1 = _mm256_madd_epi16(vsrc1, vsrc1); + v_acc_sqs = _mm256_add_epi32(v_acc_sqs, vsqs0); + v_acc_sqs = _mm256_add_epi32(v_acc_sqs, vsqs1); + } + + // Update total sum and clear the vectors + s += mm256_accumulate_epi16(v_acc_sum); + ss += mm256_accumulate_epi32(v_acc_sqs); + v_acc_sum = vzero; + v_acc_sqs = vzero; + } + + // Process remaining rows (height not a multiple of 8) + for (; j < height; j++) { + __m256i vsrc = _mm256_loadu_si256((__m256i *)srcp); + __m256i vsrc0 = _mm256_unpacklo_epi8(vsrc, vzero); + __m256i vsrc1 = _mm256_unpackhi_epi8(vsrc, vzero); + v_acc_sum = _mm256_add_epi16(v_acc_sum, vsrc0); + v_acc_sum = _mm256_add_epi16(v_acc_sum, vsrc1); + + __m256i vsqs0 = _mm256_madd_epi16(vsrc0, vsrc0); + __m256i vsqs1 = _mm256_madd_epi16(vsrc1, vsrc1); + v_acc_sqs = _mm256_add_epi32(v_acc_sqs, vsqs0); + v_acc_sqs = _mm256_add_epi32(v_acc_sqs, vsqs1); + + srcp += src_stride; + } + + // Update total sum and clear the vectors + s += mm256_accumulate_epi16(v_acc_sum); + ss += mm256_accumulate_epi32(v_acc_sqs); + v_acc_sum = vzero; + v_acc_sqs = vzero; + } + + // Process the remaining area using C + srcp = src; + for (int k = 0; k < height; k++) { + for (int m = i; m < width; m++) { + uint8_t val = srcp[m]; + s += val; + ss += val * val; + } + srcp += src_stride; + } + return (ss - s * s / (width * height)); +} + +uint64_t aom_var_2d_u16_avx2(uint8_t *src, int src_stride, int width, + int height) { + uint16_t *srcp1 = CONVERT_TO_SHORTPTR(src), *srcp; + uint64_t s = 0, ss = 0; + __m256i vzero = _mm256_setzero_si256(); + __m256i v_acc_sum = vzero; + __m256i v_acc_sqs = vzero; + int i, j; + + // Process 16 elements in a row + for (i = 0; i < width - 15; i += 16) { + srcp = srcp1 + i; + // Process 8 columns at a time + for (j = 0; j < height - 8; j += 8) { + __m256i vsrc[8]; + for (int k = 0; k < 8; k++) { + vsrc[k] = _mm256_loadu_si256((__m256i *)srcp); + srcp += src_stride; + } + for (int k = 0; k < 8; k++) { + __m256i vsrc0 = _mm256_unpacklo_epi16(vsrc[k], vzero); + __m256i vsrc1 = _mm256_unpackhi_epi16(vsrc[k], vzero); + v_acc_sum = _mm256_add_epi32(vsrc0, v_acc_sum); + v_acc_sum = _mm256_add_epi32(vsrc1, v_acc_sum); + + __m256i vsqs0 = _mm256_madd_epi16(vsrc[k], vsrc[k]); + v_acc_sqs = _mm256_add_epi32(v_acc_sqs, vsqs0); + } + + // Update total sum and clear the vectors + s += mm256_accumulate_epi32(v_acc_sum); + ss += mm256_accumulate_epi32(v_acc_sqs); + v_acc_sum = vzero; + v_acc_sqs = vzero; + } + + // Process remaining rows (height not a multiple of 8) + for (; j < height; j++) { + __m256i vsrc = _mm256_loadu_si256((__m256i *)srcp); + __m256i vsrc0 = _mm256_unpacklo_epi16(vsrc, vzero); + __m256i vsrc1 = _mm256_unpackhi_epi16(vsrc, vzero); + v_acc_sum = _mm256_add_epi32(vsrc0, v_acc_sum); + v_acc_sum = _mm256_add_epi32(vsrc1, v_acc_sum); + + __m256i vsqs0 = _mm256_madd_epi16(vsrc, vsrc); + v_acc_sqs = _mm256_add_epi32(v_acc_sqs, vsqs0); + srcp += src_stride; + } + + // Update total sum and clear the vectors + s += mm256_accumulate_epi32(v_acc_sum); + ss += mm256_accumulate_epi32(v_acc_sqs); + v_acc_sum = vzero; + v_acc_sqs = vzero; + } + + // Process the remaining area using C + srcp = srcp1; + for (int k = 0; k < height; k++) { + for (int m = i; m < width; m++) { + uint16_t val = srcp[m]; + s += val; + ss += val * val; + } + srcp += src_stride; + } + return (ss - s * s / (width * height)); +} |