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pickrst_sve.h (90704B)

---

/*
* Copyright (c) 2024, 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.
*/

#ifndef AOM_AV1_ENCODER_ARM_PICKRST_SVE_H_
#define AOM_AV1_ENCODER_ARM_PICKRST_SVE_H_

#include <arm_neon.h>
#include <arm_sve.h>

#include "aom_dsp/arm/aom_neon_sve_bridge.h"
#include "av1/encoder/arm/pickrst_neon.h"

// Swap each half of the dgd vectors so that we can accumulate the result of
// the dot-products directly in the destination matrix.
static inline int16x8x2_t transpose_dgd(int16x8_t dgd0, int16x8_t dgd1) {
 int16x8_t dgd_trn0 = vreinterpretq_s16_s64(
     vzip1q_s64(vreinterpretq_s64_s16(dgd0), vreinterpretq_s64_s16(dgd1)));
 int16x8_t dgd_trn1 = vreinterpretq_s16_s64(
     vzip2q_s64(vreinterpretq_s64_s16(dgd0), vreinterpretq_s64_s16(dgd1)));

 return (struct int16x8x2_t){ dgd_trn0, dgd_trn1 };
}

static inline void compute_M_one_row_win5(int16x8_t src, int16x8_t dgd[5],
                                         int64_t *M, int row) {
 const int wiener_win = 5;

 int64x2_t m01 = vld1q_s64(M + row * wiener_win + 0);
 int16x8x2_t dgd01 = transpose_dgd(dgd[0], dgd[1]);

 int64x2_t cross_corr01 = aom_svdot_lane_s16(m01, dgd01.val[0], src, 0);
 cross_corr01 = aom_svdot_lane_s16(cross_corr01, dgd01.val[1], src, 1);
 vst1q_s64(M + row * wiener_win + 0, cross_corr01);

 int64x2_t m23 = vld1q_s64(M + row * wiener_win + 2);
 int16x8x2_t dgd23 = transpose_dgd(dgd[2], dgd[3]);

 int64x2_t cross_corr23 = aom_svdot_lane_s16(m23, dgd23.val[0], src, 0);
 cross_corr23 = aom_svdot_lane_s16(cross_corr23, dgd23.val[1], src, 1);
 vst1q_s64(M + row * wiener_win + 2, cross_corr23);

 int64x2_t m4 = aom_sdotq_s16(vdupq_n_s64(0), src, dgd[4]);
 M[row * wiener_win + 4] += vaddvq_s64(m4);
}

static inline void compute_M_one_row_win7(int16x8_t src, int16x8_t dgd[7],
                                         int64_t *M, int row) {
 const int wiener_win = 7;

 int64x2_t m01 = vld1q_s64(M + row * wiener_win + 0);
 int16x8x2_t dgd01 = transpose_dgd(dgd[0], dgd[1]);

 int64x2_t cross_corr01 = aom_svdot_lane_s16(m01, dgd01.val[0], src, 0);
 cross_corr01 = aom_svdot_lane_s16(cross_corr01, dgd01.val[1], src, 1);
 vst1q_s64(M + row * wiener_win + 0, cross_corr01);

 int64x2_t m23 = vld1q_s64(M + row * wiener_win + 2);
 int16x8x2_t dgd23 = transpose_dgd(dgd[2], dgd[3]);

 int64x2_t cross_corr23 = aom_svdot_lane_s16(m23, dgd23.val[0], src, 0);
 cross_corr23 = aom_svdot_lane_s16(cross_corr23, dgd23.val[1], src, 1);
 vst1q_s64(M + row * wiener_win + 2, cross_corr23);

 int64x2_t m45 = vld1q_s64(M + row * wiener_win + 4);
 int16x8x2_t dgd45 = transpose_dgd(dgd[4], dgd[5]);

 int64x2_t cross_corr45 = aom_svdot_lane_s16(m45, dgd45.val[0], src, 0);
 cross_corr45 = aom_svdot_lane_s16(cross_corr45, dgd45.val[1], src, 1);
 vst1q_s64(M + row * wiener_win + 4, cross_corr45);

 int64x2_t m6 = aom_sdotq_s16(vdupq_n_s64(0), src, dgd[6]);
 M[row * wiener_win + 6] += vaddvq_s64(m6);
}

static inline void compute_H_one_col(int16x8_t *dgd, int col, int64_t *H,
                                    const int wiener_win,
                                    const int wiener_win2) {
 for (int row0 = 0; row0 < wiener_win; row0++) {
   for (int row1 = row0; row1 < wiener_win; row1++) {
     int auto_cov_idx =
         (col * wiener_win + row0) * wiener_win2 + (col * wiener_win) + row1;

     int64x2_t auto_cov = aom_sdotq_s16(vdupq_n_s64(0), dgd[row0], dgd[row1]);
     H[auto_cov_idx] += vaddvq_s64(auto_cov);
   }
 }
}

static inline void compute_H_two_rows_win5(int16x8_t *dgd0, int16x8_t *dgd1,
                                          int row0, int row1, int64_t *H) {
 for (int col0 = 0; col0 < 5; col0++) {
   int auto_cov_idx = (row0 * 5 + col0) * 25 + (row1 * 5);

   int64x2_t h01 = vld1q_s64(H + auto_cov_idx);
   int16x8x2_t dgd01 = transpose_dgd(dgd1[0], dgd1[1]);

   int64x2_t auto_cov01 = aom_svdot_lane_s16(h01, dgd01.val[0], dgd0[col0], 0);
   auto_cov01 = aom_svdot_lane_s16(auto_cov01, dgd01.val[1], dgd0[col0], 1);
   vst1q_s64(H + auto_cov_idx, auto_cov01);

   int64x2_t h23 = vld1q_s64(H + auto_cov_idx + 2);
   int16x8x2_t dgd23 = transpose_dgd(dgd1[2], dgd1[3]);

   int64x2_t auto_cov23 = aom_svdot_lane_s16(h23, dgd23.val[0], dgd0[col0], 0);
   auto_cov23 = aom_svdot_lane_s16(auto_cov23, dgd23.val[1], dgd0[col0], 1);
   vst1q_s64(H + auto_cov_idx + 2, auto_cov23);

   int64x2_t auto_cov4 = aom_sdotq_s16(vdupq_n_s64(0), dgd0[col0], dgd1[4]);
   H[auto_cov_idx + 4] += vaddvq_s64(auto_cov4);
 }
}

static inline void compute_H_two_rows_win7(int16x8_t *dgd0, int16x8_t *dgd1,
                                          int row0, int row1, int64_t *H) {
 for (int col0 = 0; col0 < 7; col0++) {
   int auto_cov_idx = (row0 * 7 + col0) * 49 + (row1 * 7);

   int64x2_t h01 = vld1q_s64(H + auto_cov_idx);
   int16x8x2_t dgd01 = transpose_dgd(dgd1[0], dgd1[1]);

   int64x2_t auto_cov01 = aom_svdot_lane_s16(h01, dgd01.val[0], dgd0[col0], 0);
   auto_cov01 = aom_svdot_lane_s16(auto_cov01, dgd01.val[1], dgd0[col0], 1);
   vst1q_s64(H + auto_cov_idx, auto_cov01);

   int64x2_t h23 = vld1q_s64(H + auto_cov_idx + 2);
   int16x8x2_t dgd23 = transpose_dgd(dgd1[2], dgd1[3]);

   int64x2_t auto_cov23 = aom_svdot_lane_s16(h23, dgd23.val[0], dgd0[col0], 0);
   auto_cov23 = aom_svdot_lane_s16(auto_cov23, dgd23.val[1], dgd0[col0], 1);
   vst1q_s64(H + auto_cov_idx + 2, auto_cov23);

   int64x2_t h45 = vld1q_s64(H + auto_cov_idx + 4);
   int16x8x2_t dgd45 = transpose_dgd(dgd1[4], dgd1[5]);

   int64x2_t auto_cov45 = aom_svdot_lane_s16(h45, dgd45.val[0], dgd0[col0], 0);
   auto_cov45 = aom_svdot_lane_s16(auto_cov45, dgd45.val[1], dgd0[col0], 1);
   vst1q_s64(H + auto_cov_idx + 4, auto_cov45);

   int64x2_t auto_cov6 = aom_sdotq_s16(vdupq_n_s64(0), dgd0[col0], dgd1[6]);
   H[auto_cov_idx + 6] += vaddvq_s64(auto_cov6);
 }
}

static inline void stats_top_win5_sve(const int16x8_t src[2],
                                     const int16x8_t dgd[2],
                                     const int16_t *const d,
                                     const int32_t d_stride, int64x2_t *sum_m,
                                     int64x2_t *sum_h) {
 int16x8_t dgds[WIENER_WIN_CHROMA * 2];

 load_s16_8x5(d + 0, d_stride, &dgds[0], &dgds[2], &dgds[4], &dgds[6],
              &dgds[8]);
 load_s16_8x5(d + 8, d_stride, &dgds[1], &dgds[3], &dgds[5], &dgds[7],
              &dgds[9]);

 sum_m[0] = aom_sdotq_s16(sum_m[0], src[0], dgds[0]);
 sum_m[0] = aom_sdotq_s16(sum_m[0], src[1], dgds[1]);
 sum_m[1] = aom_sdotq_s16(sum_m[1], src[0], dgds[2]);
 sum_m[1] = aom_sdotq_s16(sum_m[1], src[1], dgds[3]);
 sum_m[2] = aom_sdotq_s16(sum_m[2], src[0], dgds[4]);
 sum_m[2] = aom_sdotq_s16(sum_m[2], src[1], dgds[5]);
 sum_m[3] = aom_sdotq_s16(sum_m[3], src[0], dgds[6]);
 sum_m[3] = aom_sdotq_s16(sum_m[3], src[1], dgds[7]);
 sum_m[4] = aom_sdotq_s16(sum_m[4], src[0], dgds[8]);
 sum_m[4] = aom_sdotq_s16(sum_m[4], src[1], dgds[9]);

 sum_h[0] = aom_sdotq_s16(sum_h[0], dgd[0], dgds[0]);
 sum_h[0] = aom_sdotq_s16(sum_h[0], dgd[1], dgds[1]);
 sum_h[1] = aom_sdotq_s16(sum_h[1], dgd[0], dgds[2]);
 sum_h[1] = aom_sdotq_s16(sum_h[1], dgd[1], dgds[3]);
 sum_h[2] = aom_sdotq_s16(sum_h[2], dgd[0], dgds[4]);
 sum_h[2] = aom_sdotq_s16(sum_h[2], dgd[1], dgds[5]);
 sum_h[3] = aom_sdotq_s16(sum_h[3], dgd[0], dgds[6]);
 sum_h[3] = aom_sdotq_s16(sum_h[3], dgd[1], dgds[7]);
 sum_h[4] = aom_sdotq_s16(sum_h[4], dgd[0], dgds[8]);
 sum_h[4] = aom_sdotq_s16(sum_h[4], dgd[1], dgds[9]);
}

static inline void stats_left_win5_sve(const int16x8_t src[2], const int16_t *d,
                                      const int32_t d_stride, int64x2_t *sum) {
 int16x8_t dgds[WIN_CHROMA];

 load_s16_8x4(d + d_stride + 0, d_stride, &dgds[0], &dgds[2], &dgds[4],
              &dgds[6]);
 load_s16_8x4(d + d_stride + 8, d_stride, &dgds[1], &dgds[3], &dgds[5],
              &dgds[7]);

 sum[0] = aom_sdotq_s16(sum[0], src[0], dgds[0]);
 sum[0] = aom_sdotq_s16(sum[0], src[1], dgds[1]);
 sum[1] = aom_sdotq_s16(sum[1], src[0], dgds[2]);
 sum[1] = aom_sdotq_s16(sum[1], src[1], dgds[3]);
 sum[2] = aom_sdotq_s16(sum[2], src[0], dgds[4]);
 sum[2] = aom_sdotq_s16(sum[2], src[1], dgds[5]);
 sum[3] = aom_sdotq_s16(sum[3], src[0], dgds[6]);
 sum[3] = aom_sdotq_s16(sum[3], src[1], dgds[7]);
}

static inline void sub_deltas_step4_sve(int16x8_t *A, int16x8_t *B,
                                       int64x2_t *deltas) {
 deltas[0] = aom_sdotq_s16(deltas[0], vnegq_s16(A[0]), B[0]);
 deltas[1] = aom_sdotq_s16(deltas[1], vnegq_s16(A[0]), B[1]);
 deltas[2] = aom_sdotq_s16(deltas[2], vnegq_s16(A[0]), B[2]);
 deltas[3] = aom_sdotq_s16(deltas[3], vnegq_s16(A[0]), B[3]);
 deltas[4] = aom_sdotq_s16(deltas[4], vnegq_s16(A[0]), B[4]);
 deltas[5] = aom_sdotq_s16(deltas[5], vnegq_s16(A[1]), B[0]);
 deltas[6] = aom_sdotq_s16(deltas[6], vnegq_s16(A[2]), B[0]);
 deltas[7] = aom_sdotq_s16(deltas[7], vnegq_s16(A[3]), B[0]);
 deltas[8] = aom_sdotq_s16(deltas[8], vnegq_s16(A[4]), B[0]);
}

static inline void add_deltas_step4_sve(int16x8_t *A, int16x8_t *B,
                                       int64x2_t *deltas) {
 deltas[0] = aom_sdotq_s16(deltas[0], A[0], B[0]);
 deltas[1] = aom_sdotq_s16(deltas[1], A[0], B[1]);
 deltas[2] = aom_sdotq_s16(deltas[2], A[0], B[2]);
 deltas[3] = aom_sdotq_s16(deltas[3], A[0], B[3]);
 deltas[4] = aom_sdotq_s16(deltas[4], A[0], B[4]);
 deltas[5] = aom_sdotq_s16(deltas[5], A[1], B[0]);
 deltas[6] = aom_sdotq_s16(deltas[6], A[2], B[0]);
 deltas[7] = aom_sdotq_s16(deltas[7], A[3], B[0]);
 deltas[8] = aom_sdotq_s16(deltas[8], A[4], B[0]);
}

static inline void load_square_win5_sve(
   const int16_t *const di, const int16_t *const dj, const int32_t d_stride,
   const int32_t height, int16x8_t *d_is, int16x8_t *d_ie, int16x8_t *d_js,
   int16x8_t *d_je, svbool_t p0, svbool_t p1) {
 d_is[0] = svget_neonq_s16(svld1_s16(p0, di + 0 * d_stride + 0));
 d_is[1] = svget_neonq_s16(svld1_s16(p1, di + 0 * d_stride + 8));
 d_is[2] = svget_neonq_s16(svld1_s16(p0, di + 1 * d_stride + 0));
 d_is[3] = svget_neonq_s16(svld1_s16(p1, di + 1 * d_stride + 8));
 d_is[4] = svget_neonq_s16(svld1_s16(p0, di + 2 * d_stride + 0));
 d_is[5] = svget_neonq_s16(svld1_s16(p1, di + 2 * d_stride + 8));
 d_is[6] = svget_neonq_s16(svld1_s16(p0, di + 3 * d_stride + 0));
 d_is[7] = svget_neonq_s16(svld1_s16(p1, di + 3 * d_stride + 8));

 d_ie[0] = svget_neonq_s16(svld1_s16(p0, di + (height + 0) * d_stride + 0));
 d_ie[1] = svget_neonq_s16(svld1_s16(p1, di + (height + 0) * d_stride + 8));
 d_ie[2] = svget_neonq_s16(svld1_s16(p0, di + (height + 1) * d_stride + 0));
 d_ie[3] = svget_neonq_s16(svld1_s16(p1, di + (height + 1) * d_stride + 8));
 d_ie[4] = svget_neonq_s16(svld1_s16(p0, di + (height + 2) * d_stride + 0));
 d_ie[5] = svget_neonq_s16(svld1_s16(p1, di + (height + 2) * d_stride + 8));
 d_ie[6] = svget_neonq_s16(svld1_s16(p0, di + (height + 3) * d_stride + 0));
 d_ie[7] = svget_neonq_s16(svld1_s16(p1, di + (height + 3) * d_stride + 8));

 load_s16_8x4(dj + 0, d_stride, &d_js[0], &d_js[2], &d_js[4], &d_js[6]);
 load_s16_8x4(dj + 8, d_stride, &d_js[1], &d_js[3], &d_js[5], &d_js[7]);
 load_s16_8x4(dj + height * d_stride + 0, d_stride, &d_je[0], &d_je[2],
              &d_je[4], &d_je[6]);
 load_s16_8x4(dj + height * d_stride + 8, d_stride, &d_je[1], &d_je[3],
              &d_je[5], &d_je[7]);
}

static inline void update_4_stats_sve(const int64_t *const src,
                                     const int64x2_t *delta,
                                     int64_t *const dst) {
 const int64x2_t s1 = vld1q_s64(src);
 const int64x2_t s2 = vld1q_s64(src + 2);

 vst1q_s64(dst + 0, vaddq_s64(s1, delta[0]));
 vst1q_s64(dst + 2, vaddq_s64(s2, delta[1]));
}

static inline void derive_square_win5_sve(
   int16x8_t *d_is, const int16x8_t *d_ie, const int16x8_t *d_js,
   const int16x8_t *d_je,
   int64x2_t deltas[WIENER_WIN_CHROMA - 1][WIENER_WIN_CHROMA - 1]) {
 d_is[0] = vnegq_s16(d_is[0]);
 d_is[1] = vnegq_s16(d_is[1]);
 d_is[2] = vnegq_s16(d_is[2]);
 d_is[3] = vnegq_s16(d_is[3]);
 d_is[4] = vnegq_s16(d_is[4]);
 d_is[5] = vnegq_s16(d_is[5]);
 d_is[6] = vnegq_s16(d_is[6]);
 d_is[7] = vnegq_s16(d_is[7]);

 deltas[0][0] = aom_sdotq_s16(deltas[0][0], d_is[0], d_js[0]);
 deltas[0][0] = aom_sdotq_s16(deltas[0][0], d_is[1], d_js[1]);
 deltas[0][1] = aom_sdotq_s16(deltas[0][1], d_is[0], d_js[2]);
 deltas[0][1] = aom_sdotq_s16(deltas[0][1], d_is[1], d_js[3]);
 deltas[0][2] = aom_sdotq_s16(deltas[0][2], d_is[0], d_js[4]);
 deltas[0][2] = aom_sdotq_s16(deltas[0][2], d_is[1], d_js[5]);
 deltas[0][3] = aom_sdotq_s16(deltas[0][3], d_is[0], d_js[6]);
 deltas[0][3] = aom_sdotq_s16(deltas[0][3], d_is[1], d_js[7]);

 deltas[1][0] = aom_sdotq_s16(deltas[1][0], d_is[2], d_js[0]);
 deltas[1][0] = aom_sdotq_s16(deltas[1][0], d_is[3], d_js[1]);
 deltas[1][1] = aom_sdotq_s16(deltas[1][1], d_is[2], d_js[2]);
 deltas[1][1] = aom_sdotq_s16(deltas[1][1], d_is[3], d_js[3]);
 deltas[1][2] = aom_sdotq_s16(deltas[1][2], d_is[2], d_js[4]);
 deltas[1][2] = aom_sdotq_s16(deltas[1][2], d_is[3], d_js[5]);
 deltas[1][3] = aom_sdotq_s16(deltas[1][3], d_is[2], d_js[6]);
 deltas[1][3] = aom_sdotq_s16(deltas[1][3], d_is[3], d_js[7]);

 deltas[2][0] = aom_sdotq_s16(deltas[2][0], d_is[4], d_js[0]);
 deltas[2][0] = aom_sdotq_s16(deltas[2][0], d_is[5], d_js[1]);
 deltas[2][1] = aom_sdotq_s16(deltas[2][1], d_is[4], d_js[2]);
 deltas[2][1] = aom_sdotq_s16(deltas[2][1], d_is[5], d_js[3]);
 deltas[2][2] = aom_sdotq_s16(deltas[2][2], d_is[4], d_js[4]);
 deltas[2][2] = aom_sdotq_s16(deltas[2][2], d_is[5], d_js[5]);
 deltas[2][3] = aom_sdotq_s16(deltas[2][3], d_is[4], d_js[6]);
 deltas[2][3] = aom_sdotq_s16(deltas[2][3], d_is[5], d_js[7]);

 deltas[3][0] = aom_sdotq_s16(deltas[3][0], d_is[6], d_js[0]);
 deltas[3][0] = aom_sdotq_s16(deltas[3][0], d_is[7], d_js[1]);
 deltas[3][1] = aom_sdotq_s16(deltas[3][1], d_is[6], d_js[2]);
 deltas[3][1] = aom_sdotq_s16(deltas[3][1], d_is[7], d_js[3]);
 deltas[3][2] = aom_sdotq_s16(deltas[3][2], d_is[6], d_js[4]);
 deltas[3][2] = aom_sdotq_s16(deltas[3][2], d_is[7], d_js[5]);
 deltas[3][3] = aom_sdotq_s16(deltas[3][3], d_is[6], d_js[6]);
 deltas[3][3] = aom_sdotq_s16(deltas[3][3], d_is[7], d_js[7]);

 deltas[0][0] = aom_sdotq_s16(deltas[0][0], d_ie[0], d_je[0]);
 deltas[0][0] = aom_sdotq_s16(deltas[0][0], d_ie[1], d_je[1]);
 deltas[0][1] = aom_sdotq_s16(deltas[0][1], d_ie[0], d_je[2]);
 deltas[0][1] = aom_sdotq_s16(deltas[0][1], d_ie[1], d_je[3]);
 deltas[0][2] = aom_sdotq_s16(deltas[0][2], d_ie[0], d_je[4]);
 deltas[0][2] = aom_sdotq_s16(deltas[0][2], d_ie[1], d_je[5]);
 deltas[0][3] = aom_sdotq_s16(deltas[0][3], d_ie[0], d_je[6]);
 deltas[0][3] = aom_sdotq_s16(deltas[0][3], d_ie[1], d_je[7]);

 deltas[1][0] = aom_sdotq_s16(deltas[1][0], d_ie[2], d_je[0]);
 deltas[1][0] = aom_sdotq_s16(deltas[1][0], d_ie[3], d_je[1]);
 deltas[1][1] = aom_sdotq_s16(deltas[1][1], d_ie[2], d_je[2]);
 deltas[1][1] = aom_sdotq_s16(deltas[1][1], d_ie[3], d_je[3]);
 deltas[1][2] = aom_sdotq_s16(deltas[1][2], d_ie[2], d_je[4]);
 deltas[1][2] = aom_sdotq_s16(deltas[1][2], d_ie[3], d_je[5]);
 deltas[1][3] = aom_sdotq_s16(deltas[1][3], d_ie[2], d_je[6]);
 deltas[1][3] = aom_sdotq_s16(deltas[1][3], d_ie[3], d_je[7]);

 deltas[2][0] = aom_sdotq_s16(deltas[2][0], d_ie[4], d_je[0]);
 deltas[2][0] = aom_sdotq_s16(deltas[2][0], d_ie[5], d_je[1]);
 deltas[2][1] = aom_sdotq_s16(deltas[2][1], d_ie[4], d_je[2]);
 deltas[2][1] = aom_sdotq_s16(deltas[2][1], d_ie[5], d_je[3]);
 deltas[2][2] = aom_sdotq_s16(deltas[2][2], d_ie[4], d_je[4]);
 deltas[2][2] = aom_sdotq_s16(deltas[2][2], d_ie[5], d_je[5]);
 deltas[2][3] = aom_sdotq_s16(deltas[2][3], d_ie[4], d_je[6]);
 deltas[2][3] = aom_sdotq_s16(deltas[2][3], d_ie[5], d_je[7]);

 deltas[3][0] = aom_sdotq_s16(deltas[3][0], d_ie[6], d_je[0]);
 deltas[3][0] = aom_sdotq_s16(deltas[3][0], d_ie[7], d_je[1]);
 deltas[3][1] = aom_sdotq_s16(deltas[3][1], d_ie[6], d_je[2]);
 deltas[3][1] = aom_sdotq_s16(deltas[3][1], d_ie[7], d_je[3]);
 deltas[3][2] = aom_sdotq_s16(deltas[3][2], d_ie[6], d_je[4]);
 deltas[3][2] = aom_sdotq_s16(deltas[3][2], d_ie[7], d_je[5]);
 deltas[3][3] = aom_sdotq_s16(deltas[3][3], d_ie[6], d_je[6]);
 deltas[3][3] = aom_sdotq_s16(deltas[3][3], d_ie[7], d_je[7]);
}

static inline void hadd_update_4_stats_sve(const int64_t *const src,
                                          const int64x2_t *deltas,
                                          int64_t *const dst) {
 int64x2_t src0 = vld1q_s64(src);
 int64x2_t src1 = vld1q_s64(src + 2);
 vst1q_s64(dst + 0, vaddq_s64(src0, vpaddq_s64(deltas[0], deltas[1])));
 vst1q_s64(dst + 2, vaddq_s64(src1, vpaddq_s64(deltas[2], deltas[3])));
}

static inline void load_triangle_win5_sve(const int16_t *const di,
                                         const int32_t d_stride,
                                         const int32_t height, int16x8_t *d_is,
                                         int16x8_t *d_ie, svbool_t p0,
                                         svbool_t p1) {
 d_is[0] = svget_neonq_s16(svld1_s16(p0, di + 0 * d_stride + 0));
 d_is[1] = svget_neonq_s16(svld1_s16(p1, di + 0 * d_stride + 8));
 d_is[2] = svget_neonq_s16(svld1_s16(p0, di + 1 * d_stride + 0));
 d_is[3] = svget_neonq_s16(svld1_s16(p1, di + 1 * d_stride + 8));
 d_is[4] = svget_neonq_s16(svld1_s16(p0, di + 2 * d_stride + 0));
 d_is[5] = svget_neonq_s16(svld1_s16(p1, di + 2 * d_stride + 8));
 d_is[6] = svget_neonq_s16(svld1_s16(p0, di + 3 * d_stride + 0));
 d_is[7] = svget_neonq_s16(svld1_s16(p1, di + 3 * d_stride + 8));
 d_ie[0] = svget_neonq_s16(svld1_s16(p0, di + (height + 0) * d_stride + 0));
 d_ie[1] = svget_neonq_s16(svld1_s16(p1, di + (height + 0) * d_stride + 8));
 d_ie[2] = svget_neonq_s16(svld1_s16(p0, di + (height + 1) * d_stride + 0));
 d_ie[3] = svget_neonq_s16(svld1_s16(p1, di + (height + 1) * d_stride + 8));
 d_ie[4] = svget_neonq_s16(svld1_s16(p0, di + (height + 2) * d_stride + 0));
 d_ie[5] = svget_neonq_s16(svld1_s16(p1, di + (height + 2) * d_stride + 8));
 d_ie[6] = svget_neonq_s16(svld1_s16(p0, di + (height + 3) * d_stride + 0));
 d_ie[7] = svget_neonq_s16(svld1_s16(p1, di + (height + 3) * d_stride + 8));
}

static inline void derive_triangle_win5_sve(const int16x8_t *d_is,
                                           const int16x8_t *d_ie,
                                           int64x2_t *deltas) {
 deltas[0] = aom_sdotq_s16(deltas[0], vnegq_s16(d_is[0]), d_is[0]);
 deltas[0] = aom_sdotq_s16(deltas[0], vnegq_s16(d_is[1]), d_is[1]);
 deltas[1] = aom_sdotq_s16(deltas[1], vnegq_s16(d_is[0]), d_is[2]);
 deltas[1] = aom_sdotq_s16(deltas[1], vnegq_s16(d_is[1]), d_is[3]);
 deltas[2] = aom_sdotq_s16(deltas[2], vnegq_s16(d_is[0]), d_is[4]);
 deltas[2] = aom_sdotq_s16(deltas[2], vnegq_s16(d_is[1]), d_is[5]);
 deltas[3] = aom_sdotq_s16(deltas[3], vnegq_s16(d_is[0]), d_is[6]);
 deltas[3] = aom_sdotq_s16(deltas[3], vnegq_s16(d_is[1]), d_is[7]);
 deltas[4] = aom_sdotq_s16(deltas[4], vnegq_s16(d_is[2]), d_is[2]);
 deltas[4] = aom_sdotq_s16(deltas[4], vnegq_s16(d_is[3]), d_is[3]);
 deltas[5] = aom_sdotq_s16(deltas[5], vnegq_s16(d_is[2]), d_is[4]);
 deltas[5] = aom_sdotq_s16(deltas[5], vnegq_s16(d_is[3]), d_is[5]);
 deltas[6] = aom_sdotq_s16(deltas[6], vnegq_s16(d_is[2]), d_is[6]);
 deltas[6] = aom_sdotq_s16(deltas[6], vnegq_s16(d_is[3]), d_is[7]);
 deltas[7] = aom_sdotq_s16(deltas[7], vnegq_s16(d_is[4]), d_is[4]);
 deltas[7] = aom_sdotq_s16(deltas[7], vnegq_s16(d_is[5]), d_is[5]);
 deltas[8] = aom_sdotq_s16(deltas[8], vnegq_s16(d_is[4]), d_is[6]);
 deltas[8] = aom_sdotq_s16(deltas[8], vnegq_s16(d_is[5]), d_is[7]);
 deltas[9] = aom_sdotq_s16(deltas[9], vnegq_s16(d_is[6]), d_is[6]);
 deltas[9] = aom_sdotq_s16(deltas[9], vnegq_s16(d_is[7]), d_is[7]);

 deltas[0] = aom_sdotq_s16(deltas[0], d_ie[0], d_ie[0]);
 deltas[0] = aom_sdotq_s16(deltas[0], d_ie[1], d_ie[1]);
 deltas[1] = aom_sdotq_s16(deltas[1], d_ie[0], d_ie[2]);
 deltas[1] = aom_sdotq_s16(deltas[1], d_ie[1], d_ie[3]);
 deltas[2] = aom_sdotq_s16(deltas[2], d_ie[0], d_ie[4]);
 deltas[2] = aom_sdotq_s16(deltas[2], d_ie[1], d_ie[5]);
 deltas[3] = aom_sdotq_s16(deltas[3], d_ie[0], d_ie[6]);
 deltas[3] = aom_sdotq_s16(deltas[3], d_ie[1], d_ie[7]);
 deltas[4] = aom_sdotq_s16(deltas[4], d_ie[2], d_ie[2]);
 deltas[4] = aom_sdotq_s16(deltas[4], d_ie[3], d_ie[3]);
 deltas[5] = aom_sdotq_s16(deltas[5], d_ie[2], d_ie[4]);
 deltas[5] = aom_sdotq_s16(deltas[5], d_ie[3], d_ie[5]);
 deltas[6] = aom_sdotq_s16(deltas[6], d_ie[2], d_ie[6]);
 deltas[6] = aom_sdotq_s16(deltas[6], d_ie[3], d_ie[7]);
 deltas[7] = aom_sdotq_s16(deltas[7], d_ie[4], d_ie[4]);
 deltas[7] = aom_sdotq_s16(deltas[7], d_ie[5], d_ie[5]);
 deltas[8] = aom_sdotq_s16(deltas[8], d_ie[4], d_ie[6]);
 deltas[8] = aom_sdotq_s16(deltas[8], d_ie[5], d_ie[7]);
 deltas[9] = aom_sdotq_s16(deltas[9], d_ie[6], d_ie[6]);
 deltas[9] = aom_sdotq_s16(deltas[9], d_ie[7], d_ie[7]);
}

static inline void compute_stats_win5_sve(
   const int16_t *const d, const int32_t d_stride, const int16_t *const s,
   const int32_t s_stride, const int32_t width, const int32_t height,
   int64_t *const M, int64_t *const H) {
 const int32_t wiener_win = WIENER_WIN_CHROMA;
 const int32_t wiener_win2 = wiener_win * wiener_win;
 const int32_t h8 = height & ~7;
 int32_t i, j, x, y;

 // Use a predicate to compute the last columns.
 svbool_t p0 = svwhilelt_b16_u32(0, width % 16 == 0 ? 16 : width % 16);
 svbool_t p1 = svwhilelt_b16_u32(8, width % 16 == 0 ? 16 : width % 16);

 // Step 1: Calculate the top edge of the whole matrix, i.e., the top
 // edge of each triangle and square on the top row.
 j = 0;
 do {
   const int16_t *s_t = s;
   const int16_t *d_t = d;
   int64x2_t sum_m[WIENER_WIN_CHROMA] = { vdupq_n_s64(0) };
   int64x2_t sum_h[WIENER_WIN_CHROMA] = { vdupq_n_s64(0) };
   int16x8_t src[2], dgd[2];

   y = height;
   do {
     x = 0;
     while (x < width - 16) {
       src[0] = vld1q_s16(s_t + x + 0);
       src[1] = vld1q_s16(s_t + x + 8);
       dgd[0] = vld1q_s16(d_t + x + 0);
       dgd[1] = vld1q_s16(d_t + x + 8);
       stats_top_win5_sve(src, dgd, d_t + j + x, d_stride, sum_m, sum_h);
       x += 16;
     }

     src[0] = svget_neonq_s16(svld1_s16(p0, s_t + x + 0));
     src[1] = svget_neonq_s16(svld1_s16(p1, s_t + x + 8));
     dgd[0] = svget_neonq_s16(svld1_s16(p0, d_t + x + 0));
     dgd[1] = svget_neonq_s16(svld1_s16(p1, d_t + x + 8));

     stats_top_win5_sve(src, dgd, d_t + j + x, d_stride, sum_m, sum_h);

     s_t += s_stride;
     d_t += d_stride;
   } while (--y);

   vst1q_s64(&M[wiener_win * j + 0], vpaddq_s64(sum_m[0], sum_m[1]));
   vst1q_s64(&M[wiener_win * j + 2], vpaddq_s64(sum_m[2], sum_m[3]));
   M[wiener_win * j + 4] = vaddvq_s64(sum_m[4]);

   vst1q_s64(&H[wiener_win * j + 0], vpaddq_s64(sum_h[0], sum_h[1]));
   vst1q_s64(&H[wiener_win * j + 2], vpaddq_s64(sum_h[2], sum_h[3]));
   H[wiener_win * j + 4] = vaddvq_s64(sum_h[4]);
 } while (++j < wiener_win);

 // Step 2: Calculate the left edge of each square on the top row.
 j = 1;
 do {
   const int16_t *d_t = d;
   int64x2_t sum_h[WIENER_WIN_CHROMA - 1] = { vdupq_n_s64(0) };
   int16x8_t dgd[2];

   y = height;
   do {
     x = 0;
     while (x < width - 16) {
       dgd[0] = vld1q_s16(d_t + j + x + 0);
       dgd[1] = vld1q_s16(d_t + j + x + 8);
       stats_left_win5_sve(dgd, d_t + x, d_stride, sum_h);
       x += 16;
     }

     dgd[0] = svget_neonq_s16(svld1_s16(p0, d_t + j + x + 0));
     dgd[1] = svget_neonq_s16(svld1_s16(p1, d_t + j + x + 8));

     stats_left_win5_sve(dgd, d_t + x, d_stride, sum_h);

     d_t += d_stride;
   } while (--y);

   int64x2_t sum_h01 = vpaddq_s64(sum_h[0], sum_h[1]);
   int64x2_t sum_h23 = vpaddq_s64(sum_h[2], sum_h[3]);
   vst1_s64(&H[1 * wiener_win2 + j * wiener_win], vget_low_s64(sum_h01));
   vst1_s64(&H[2 * wiener_win2 + j * wiener_win], vget_high_s64(sum_h01));
   vst1_s64(&H[3 * wiener_win2 + j * wiener_win], vget_low_s64(sum_h23));
   vst1_s64(&H[4 * wiener_win2 + j * wiener_win], vget_high_s64(sum_h23));

 } while (++j < wiener_win);

 // Step 3: Derive the top edge of each triangle along the diagonal. No
 // triangle in top row.
 {
   const int16_t *d_t = d;

   if (height % 2) {
     int32x4_t deltas[(WIENER_WIN + 1) * 2] = { vdupq_n_s32(0) };
     int32x4_t deltas_tr[(WIENER_WIN + 1) * 2] = { vdupq_n_s32(0) };
     int16x8_t ds[WIENER_WIN * 2];

     load_s16_8x4(d_t, d_stride, &ds[0], &ds[2], &ds[4], &ds[6]);
     load_s16_8x4(d_t + width, d_stride, &ds[1], &ds[3], &ds[5], &ds[7]);
     d_t += 4 * d_stride;

     step3_win5_oneline_neon(&d_t, d_stride, width, height, ds, deltas);
     transpose_arrays_s32_8x8(deltas, deltas_tr);

     update_5_stats_neon(H + 0 * wiener_win * wiener_win2 + 0 * wiener_win,
                         deltas_tr[0], vgetq_lane_s32(deltas_tr[4], 0),
                         H + 1 * wiener_win * wiener_win2 + 1 * wiener_win);

     update_5_stats_neon(H + 1 * wiener_win * wiener_win2 + 1 * wiener_win,
                         deltas_tr[1], vgetq_lane_s32(deltas_tr[5], 0),
                         H + 2 * wiener_win * wiener_win2 + 2 * wiener_win);

     update_5_stats_neon(H + 2 * wiener_win * wiener_win2 + 2 * wiener_win,
                         deltas_tr[2], vgetq_lane_s32(deltas_tr[6], 0),
                         H + 3 * wiener_win * wiener_win2 + 3 * wiener_win);

     update_5_stats_neon(H + 3 * wiener_win * wiener_win2 + 3 * wiener_win,
                         deltas_tr[3], vgetq_lane_s32(deltas_tr[7], 0),
                         H + 4 * wiener_win * wiener_win2 + 4 * wiener_win);

   } else {
     int32x4_t deltas[WIENER_WIN_CHROMA * 2] = { vdupq_n_s32(0) };
     int16x8_t ds[WIENER_WIN_CHROMA * 2];

     ds[0] = load_unaligned_s16_4x2(d_t + 0 * d_stride, width);
     ds[1] = load_unaligned_s16_4x2(d_t + 1 * d_stride, width);
     ds[2] = load_unaligned_s16_4x2(d_t + 2 * d_stride, width);
     ds[3] = load_unaligned_s16_4x2(d_t + 3 * d_stride, width);

     step3_win5_neon(d_t + 4 * d_stride, d_stride, width, height, ds, deltas);

     transpose_elems_inplace_s32_4x4(&deltas[0], &deltas[1], &deltas[2],
                                     &deltas[3]);

     update_5_stats_neon(H + 0 * wiener_win * wiener_win2 + 0 * wiener_win,
                         deltas[0], vgetq_lane_s32(deltas[4], 0),
                         H + 1 * wiener_win * wiener_win2 + 1 * wiener_win);

     update_5_stats_neon(H + 1 * wiener_win * wiener_win2 + 1 * wiener_win,
                         deltas[1], vgetq_lane_s32(deltas[4], 1),
                         H + 2 * wiener_win * wiener_win2 + 2 * wiener_win);

     update_5_stats_neon(H + 2 * wiener_win * wiener_win2 + 2 * wiener_win,
                         deltas[2], vgetq_lane_s32(deltas[4], 2),
                         H + 3 * wiener_win * wiener_win2 + 3 * wiener_win);

     update_5_stats_neon(H + 3 * wiener_win * wiener_win2 + 3 * wiener_win,
                         deltas[3], vgetq_lane_s32(deltas[4], 3),
                         H + 4 * wiener_win * wiener_win2 + 4 * wiener_win);
   }
 }

 // Step 4: Derive the top and left edge of each square. No square in top and
 // bottom row.
 {
   y = h8;

   int16x4_t d_s[12];
   int16x4_t d_e[12];
   const int16_t *d_t = d;
   int16x4_t zeros = vdup_n_s16(0);
   load_s16_4x4(d_t, d_stride, &d_s[0], &d_s[1], &d_s[2], &d_s[3]);
   load_s16_4x4(d_t + width, d_stride, &d_e[0], &d_e[1], &d_e[2], &d_e[3]);
   int64x2_t deltas[6][18] = { { vdupq_n_s64(0) }, { vdupq_n_s64(0) } };

   while (y >= 8) {
     load_s16_4x8(d_t + 4 * d_stride, d_stride, &d_s[4], &d_s[5], &d_s[6],
                  &d_s[7], &d_s[8], &d_s[9], &d_s[10], &d_s[11]);
     load_s16_4x8(d_t + width + 4 * d_stride, d_stride, &d_e[4], &d_e[5],
                  &d_e[6], &d_e[7], &d_e[8], &d_e[9], &d_e[10], &d_e[11]);

     int16x8_t s_tr[8], e_tr[8];
     transpose_elems_s16_4x8(d_s[0], d_s[1], d_s[2], d_s[3], d_s[4], d_s[5],
                             d_s[6], d_s[7], &s_tr[0], &s_tr[1], &s_tr[2],
                             &s_tr[3]);
     transpose_elems_s16_4x8(d_s[8], d_s[9], d_s[10], d_s[11], zeros, zeros,
                             zeros, zeros, &s_tr[4], &s_tr[5], &s_tr[6],
                             &s_tr[7]);

     transpose_elems_s16_4x8(d_e[0], d_e[1], d_e[2], d_e[3], d_e[4], d_e[5],
                             d_e[6], d_e[7], &e_tr[0], &e_tr[1], &e_tr[2],
                             &e_tr[3]);
     transpose_elems_s16_4x8(d_e[8], d_e[9], d_e[10], d_e[11], zeros, zeros,
                             zeros, zeros, &e_tr[4], &e_tr[5], &e_tr[6],
                             &e_tr[7]);

     int16x8_t start_col0[5], start_col1[5], start_col2[5], start_col3[5];
     start_col0[0] = s_tr[0];
     start_col0[1] = vextq_s16(s_tr[0], s_tr[4], 1);
     start_col0[2] = vextq_s16(s_tr[0], s_tr[4], 2);
     start_col0[3] = vextq_s16(s_tr[0], s_tr[4], 3);
     start_col0[4] = vextq_s16(s_tr[0], s_tr[4], 4);

     start_col1[0] = s_tr[1];
     start_col1[1] = vextq_s16(s_tr[1], s_tr[5], 1);
     start_col1[2] = vextq_s16(s_tr[1], s_tr[5], 2);
     start_col1[3] = vextq_s16(s_tr[1], s_tr[5], 3);
     start_col1[4] = vextq_s16(s_tr[1], s_tr[5], 4);

     start_col2[0] = s_tr[2];
     start_col2[1] = vextq_s16(s_tr[2], s_tr[6], 1);
     start_col2[2] = vextq_s16(s_tr[2], s_tr[6], 2);
     start_col2[3] = vextq_s16(s_tr[2], s_tr[6], 3);
     start_col2[4] = vextq_s16(s_tr[2], s_tr[6], 4);

     start_col3[0] = s_tr[3];
     start_col3[1] = vextq_s16(s_tr[3], s_tr[7], 1);
     start_col3[2] = vextq_s16(s_tr[3], s_tr[7], 2);
     start_col3[3] = vextq_s16(s_tr[3], s_tr[7], 3);
     start_col3[4] = vextq_s16(s_tr[3], s_tr[7], 4);

     // i = 1, j = 2;
     sub_deltas_step4_sve(start_col0, start_col1, deltas[0]);

     // i = 1, j = 3;
     sub_deltas_step4_sve(start_col0, start_col2, deltas[1]);

     // i = 1, j = 4
     sub_deltas_step4_sve(start_col0, start_col3, deltas[2]);

     // i = 2, j =3
     sub_deltas_step4_sve(start_col1, start_col2, deltas[3]);

     // i = 2, j = 4
     sub_deltas_step4_sve(start_col1, start_col3, deltas[4]);

     // i = 3, j = 4
     sub_deltas_step4_sve(start_col2, start_col3, deltas[5]);

     int16x8_t end_col0[5], end_col1[5], end_col2[5], end_col3[5];
     end_col0[0] = e_tr[0];
     end_col0[1] = vextq_s16(e_tr[0], e_tr[4], 1);
     end_col0[2] = vextq_s16(e_tr[0], e_tr[4], 2);
     end_col0[3] = vextq_s16(e_tr[0], e_tr[4], 3);
     end_col0[4] = vextq_s16(e_tr[0], e_tr[4], 4);

     end_col1[0] = e_tr[1];
     end_col1[1] = vextq_s16(e_tr[1], e_tr[5], 1);
     end_col1[2] = vextq_s16(e_tr[1], e_tr[5], 2);
     end_col1[3] = vextq_s16(e_tr[1], e_tr[5], 3);
     end_col1[4] = vextq_s16(e_tr[1], e_tr[5], 4);

     end_col2[0] = e_tr[2];
     end_col2[1] = vextq_s16(e_tr[2], e_tr[6], 1);
     end_col2[2] = vextq_s16(e_tr[2], e_tr[6], 2);
     end_col2[3] = vextq_s16(e_tr[2], e_tr[6], 3);
     end_col2[4] = vextq_s16(e_tr[2], e_tr[6], 4);

     end_col3[0] = e_tr[3];
     end_col3[1] = vextq_s16(e_tr[3], e_tr[7], 1);
     end_col3[2] = vextq_s16(e_tr[3], e_tr[7], 2);
     end_col3[3] = vextq_s16(e_tr[3], e_tr[7], 3);
     end_col3[4] = vextq_s16(e_tr[3], e_tr[7], 4);

     // i = 1, j = 2;
     add_deltas_step4_sve(end_col0, end_col1, deltas[0]);

     // i = 1, j = 3;
     add_deltas_step4_sve(end_col0, end_col2, deltas[1]);

     // i = 1, j = 4
     add_deltas_step4_sve(end_col0, end_col3, deltas[2]);

     // i = 2, j =3
     add_deltas_step4_sve(end_col1, end_col2, deltas[3]);

     // i = 2, j = 4
     add_deltas_step4_sve(end_col1, end_col3, deltas[4]);

     // i = 3, j = 4
     add_deltas_step4_sve(end_col2, end_col3, deltas[5]);

     d_s[0] = d_s[8];
     d_s[1] = d_s[9];
     d_s[2] = d_s[10];
     d_s[3] = d_s[11];
     d_e[0] = d_e[8];
     d_e[1] = d_e[9];
     d_e[2] = d_e[10];
     d_e[3] = d_e[11];

     d_t += 8 * d_stride;
     y -= 8;
   }

   if (h8 != height) {
     const int16x8_t mask_h = vld1q_s16(&mask_16bit[16] - (height % 8));

     load_s16_4x8(d_t + 4 * d_stride, d_stride, &d_s[4], &d_s[5], &d_s[6],
                  &d_s[7], &d_s[8], &d_s[9], &d_s[10], &d_s[11]);
     load_s16_4x8(d_t + width + 4 * d_stride, d_stride, &d_e[4], &d_e[5],
                  &d_e[6], &d_e[7], &d_e[8], &d_e[9], &d_e[10], &d_e[11]);
     int16x8_t s_tr[8], e_tr[8];
     transpose_elems_s16_4x8(d_s[0], d_s[1], d_s[2], d_s[3], d_s[4], d_s[5],
                             d_s[6], d_s[7], &s_tr[0], &s_tr[1], &s_tr[2],
                             &s_tr[3]);
     transpose_elems_s16_4x8(d_s[8], d_s[9], d_s[10], d_s[11], zeros, zeros,
                             zeros, zeros, &s_tr[4], &s_tr[5], &s_tr[6],
                             &s_tr[7]);
     transpose_elems_s16_4x8(d_e[0], d_e[1], d_e[2], d_e[3], d_e[4], d_e[5],
                             d_e[6], d_e[7], &e_tr[0], &e_tr[1], &e_tr[2],
                             &e_tr[3]);
     transpose_elems_s16_4x8(d_e[8], d_e[9], d_e[10], d_e[11], zeros, zeros,
                             zeros, zeros, &e_tr[4], &e_tr[5], &e_tr[6],
                             &e_tr[7]);

     int16x8_t start_col0[5], start_col1[5], start_col2[5], start_col3[5];
     start_col0[0] = vandq_s16(s_tr[0], mask_h);
     start_col0[1] = vandq_s16(vextq_s16(s_tr[0], s_tr[4], 1), mask_h);
     start_col0[2] = vandq_s16(vextq_s16(s_tr[0], s_tr[4], 2), mask_h);
     start_col0[3] = vandq_s16(vextq_s16(s_tr[0], s_tr[4], 3), mask_h);
     start_col0[4] = vandq_s16(vextq_s16(s_tr[0], s_tr[4], 4), mask_h);

     start_col1[0] = vandq_s16(s_tr[1], mask_h);
     start_col1[1] = vandq_s16(vextq_s16(s_tr[1], s_tr[5], 1), mask_h);
     start_col1[2] = vandq_s16(vextq_s16(s_tr[1], s_tr[5], 2), mask_h);
     start_col1[3] = vandq_s16(vextq_s16(s_tr[1], s_tr[5], 3), mask_h);
     start_col1[4] = vandq_s16(vextq_s16(s_tr[1], s_tr[5], 4), mask_h);

     start_col2[0] = vandq_s16(s_tr[2], mask_h);
     start_col2[1] = vandq_s16(vextq_s16(s_tr[2], s_tr[6], 1), mask_h);
     start_col2[2] = vandq_s16(vextq_s16(s_tr[2], s_tr[6], 2), mask_h);
     start_col2[3] = vandq_s16(vextq_s16(s_tr[2], s_tr[6], 3), mask_h);
     start_col2[4] = vandq_s16(vextq_s16(s_tr[2], s_tr[6], 4), mask_h);

     start_col3[0] = vandq_s16(s_tr[3], mask_h);
     start_col3[1] = vandq_s16(vextq_s16(s_tr[3], s_tr[7], 1), mask_h);
     start_col3[2] = vandq_s16(vextq_s16(s_tr[3], s_tr[7], 2), mask_h);
     start_col3[3] = vandq_s16(vextq_s16(s_tr[3], s_tr[7], 3), mask_h);
     start_col3[4] = vandq_s16(vextq_s16(s_tr[3], s_tr[7], 4), mask_h);

     // i = 1, j = 2;
     sub_deltas_step4_sve(start_col0, start_col1, deltas[0]);

     // i = 1, j = 3;
     sub_deltas_step4_sve(start_col0, start_col2, deltas[1]);

     // i = 1, j = 4
     sub_deltas_step4_sve(start_col0, start_col3, deltas[2]);

     // i = 2, j = 3
     sub_deltas_step4_sve(start_col1, start_col2, deltas[3]);

     // i = 2, j = 4
     sub_deltas_step4_sve(start_col1, start_col3, deltas[4]);

     // i = 3, j = 4
     sub_deltas_step4_sve(start_col2, start_col3, deltas[5]);

     int16x8_t end_col0[5], end_col1[5], end_col2[5], end_col3[5];
     end_col0[0] = vandq_s16(e_tr[0], mask_h);
     end_col0[1] = vandq_s16(vextq_s16(e_tr[0], e_tr[4], 1), mask_h);
     end_col0[2] = vandq_s16(vextq_s16(e_tr[0], e_tr[4], 2), mask_h);
     end_col0[3] = vandq_s16(vextq_s16(e_tr[0], e_tr[4], 3), mask_h);
     end_col0[4] = vandq_s16(vextq_s16(e_tr[0], e_tr[4], 4), mask_h);

     end_col1[0] = vandq_s16(e_tr[1], mask_h);
     end_col1[1] = vandq_s16(vextq_s16(e_tr[1], e_tr[5], 1), mask_h);
     end_col1[2] = vandq_s16(vextq_s16(e_tr[1], e_tr[5], 2), mask_h);
     end_col1[3] = vandq_s16(vextq_s16(e_tr[1], e_tr[5], 3), mask_h);
     end_col1[4] = vandq_s16(vextq_s16(e_tr[1], e_tr[5], 4), mask_h);

     end_col2[0] = vandq_s16(e_tr[2], mask_h);
     end_col2[1] = vandq_s16(vextq_s16(e_tr[2], e_tr[6], 1), mask_h);
     end_col2[2] = vandq_s16(vextq_s16(e_tr[2], e_tr[6], 2), mask_h);
     end_col2[3] = vandq_s16(vextq_s16(e_tr[2], e_tr[6], 3), mask_h);
     end_col2[4] = vandq_s16(vextq_s16(e_tr[2], e_tr[6], 4), mask_h);

     end_col3[0] = vandq_s16(e_tr[3], mask_h);
     end_col3[1] = vandq_s16(vextq_s16(e_tr[3], e_tr[7], 1), mask_h);
     end_col3[2] = vandq_s16(vextq_s16(e_tr[3], e_tr[7], 2), mask_h);
     end_col3[3] = vandq_s16(vextq_s16(e_tr[3], e_tr[7], 3), mask_h);
     end_col3[4] = vandq_s16(vextq_s16(e_tr[3], e_tr[7], 4), mask_h);

     // i = 1, j = 2;
     add_deltas_step4_sve(end_col0, end_col1, deltas[0]);

     // i = 1, j = 3;
     add_deltas_step4_sve(end_col0, end_col2, deltas[1]);

     // i = 1, j = 4
     add_deltas_step4_sve(end_col0, end_col3, deltas[2]);

     // i = 2, j =3
     add_deltas_step4_sve(end_col1, end_col2, deltas[3]);

     // i = 2, j = 4
     add_deltas_step4_sve(end_col1, end_col3, deltas[4]);

     // i = 3, j = 4
     add_deltas_step4_sve(end_col2, end_col3, deltas[5]);
   }

   int64_t single_delta[6];

   deltas[0][0] = vpaddq_s64(deltas[0][0], deltas[0][1]);
   deltas[0][1] = vpaddq_s64(deltas[0][2], deltas[0][3]);
   deltas[1][0] = vpaddq_s64(deltas[1][0], deltas[1][1]);
   deltas[1][1] = vpaddq_s64(deltas[1][2], deltas[1][3]);
   deltas[2][0] = vpaddq_s64(deltas[2][0], deltas[2][1]);
   deltas[2][1] = vpaddq_s64(deltas[2][2], deltas[2][3]);
   deltas[3][0] = vpaddq_s64(deltas[3][0], deltas[3][1]);
   deltas[3][1] = vpaddq_s64(deltas[3][2], deltas[3][3]);
   deltas[4][0] = vpaddq_s64(deltas[4][0], deltas[4][1]);
   deltas[4][1] = vpaddq_s64(deltas[4][2], deltas[4][3]);
   deltas[5][0] = vpaddq_s64(deltas[5][0], deltas[5][1]);
   deltas[5][1] = vpaddq_s64(deltas[5][2], deltas[5][3]);

   deltas[0][5] = vpaddq_s64(deltas[0][5], deltas[0][6]);
   deltas[0][7] = vpaddq_s64(deltas[0][7], deltas[0][8]);
   deltas[1][5] = vpaddq_s64(deltas[1][5], deltas[1][6]);
   deltas[1][7] = vpaddq_s64(deltas[1][7], deltas[1][8]);
   deltas[2][5] = vpaddq_s64(deltas[2][5], deltas[2][6]);
   deltas[2][7] = vpaddq_s64(deltas[2][7], deltas[2][8]);
   deltas[3][5] = vpaddq_s64(deltas[3][5], deltas[3][6]);
   deltas[3][7] = vpaddq_s64(deltas[3][7], deltas[3][8]);
   deltas[4][5] = vpaddq_s64(deltas[4][5], deltas[4][6]);
   deltas[4][7] = vpaddq_s64(deltas[4][7], deltas[4][8]);
   deltas[5][5] = vpaddq_s64(deltas[5][5], deltas[5][6]);
   deltas[5][7] = vpaddq_s64(deltas[5][7], deltas[5][8]);

   vst1q_s64(single_delta + 0, vpaddq_s64(deltas[0][4], deltas[1][4]));
   vst1q_s64(single_delta + 2, vpaddq_s64(deltas[2][4], deltas[3][4]));
   vst1q_s64(single_delta + 4, vpaddq_s64(deltas[4][4], deltas[5][4]));

   int idx = 0;
   for (i = 1; i < wiener_win - 1; i++) {
     for (j = i + 1; j < wiener_win; j++) {
       update_4_stats_sve(
           H + (i - 1) * wiener_win * wiener_win2 + (j - 1) * wiener_win,
           deltas[idx], H + i * wiener_win * wiener_win2 + j * wiener_win);
       H[i * wiener_win * wiener_win2 + j * wiener_win + 4] =
           H[(i - 1) * wiener_win * wiener_win2 + (j - 1) * wiener_win + 4] +
           single_delta[idx];

       H[(i * wiener_win + 1) * wiener_win2 + j * wiener_win] =
           H[((i - 1) * wiener_win + 1) * wiener_win2 + (j - 1) * wiener_win] +
           vgetq_lane_s64(deltas[idx][5], 0);
       H[(i * wiener_win + 2) * wiener_win2 + j * wiener_win] =
           H[((i - 1) * wiener_win + 2) * wiener_win2 + (j - 1) * wiener_win] +
           vgetq_lane_s64(deltas[idx][5], 1);
       H[(i * wiener_win + 3) * wiener_win2 + j * wiener_win] =
           H[((i - 1) * wiener_win + 3) * wiener_win2 + (j - 1) * wiener_win] +
           vgetq_lane_s64(deltas[idx][7], 0);
       H[(i * wiener_win + 4) * wiener_win2 + j * wiener_win] =
           H[((i - 1) * wiener_win + 4) * wiener_win2 + (j - 1) * wiener_win] +
           vgetq_lane_s64(deltas[idx][7], 1);

       idx++;
     }
   }
 }

 // Step 5: Derive other points of each square. No square in bottom row.
 i = 0;
 do {
   const int16_t *const di = d + i;

   j = i + 1;
   do {
     const int16_t *const dj = d + j;
     int64x2_t deltas[WIENER_WIN_CHROMA - 1][WIENER_WIN_CHROMA - 1] = {
       { vdupq_n_s64(0) }, { vdupq_n_s64(0) }
     };
     int16x8_t d_is[WIN_CHROMA], d_ie[WIN_CHROMA];
     int16x8_t d_js[WIN_CHROMA], d_je[WIN_CHROMA];

     x = 0;
     while (x < width - 16) {
       load_square_win5_neon(di + x, dj + x, d_stride, height, d_is, d_ie,
                             d_js, d_je);
       derive_square_win5_sve(d_is, d_ie, d_js, d_je, deltas);
       x += 16;
     }

     load_square_win5_sve(di + x, dj + x, d_stride, height, d_is, d_ie, d_js,
                          d_je, p0, p1);
     derive_square_win5_sve(d_is, d_ie, d_js, d_je, deltas);

     hadd_update_4_stats_sve(
         H + (i * wiener_win + 0) * wiener_win2 + j * wiener_win, deltas[0],
         H + (i * wiener_win + 1) * wiener_win2 + j * wiener_win + 1);
     hadd_update_4_stats_sve(
         H + (i * wiener_win + 1) * wiener_win2 + j * wiener_win, deltas[1],
         H + (i * wiener_win + 2) * wiener_win2 + j * wiener_win + 1);
     hadd_update_4_stats_sve(
         H + (i * wiener_win + 2) * wiener_win2 + j * wiener_win, deltas[2],
         H + (i * wiener_win + 3) * wiener_win2 + j * wiener_win + 1);
     hadd_update_4_stats_sve(
         H + (i * wiener_win + 3) * wiener_win2 + j * wiener_win, deltas[3],
         H + (i * wiener_win + 4) * wiener_win2 + j * wiener_win + 1);
   } while (++j < wiener_win);
 } while (++i < wiener_win - 1);

 // Step 6: Derive other points of each upper triangle along the diagonal.
 i = 0;
 do {
   const int16_t *const di = d + i;
   int64x2_t deltas[WIENER_WIN_CHROMA * 2 + 1] = { vdupq_n_s64(0) };
   int16x8_t d_is[WIN_CHROMA], d_ie[WIN_CHROMA];

   x = 0;
   while (x < width - 16) {
     load_triangle_win5_neon(di + x, d_stride, height, d_is, d_ie);
     derive_triangle_win5_sve(d_is, d_ie, deltas);
     x += 16;
   }

   load_triangle_win5_sve(di + x, d_stride, height, d_is, d_ie, p0, p1);
   derive_triangle_win5_sve(d_is, d_ie, deltas);

   // Row 1: 4 points
   hadd_update_4_stats_sve(
       H + (i * wiener_win + 0) * wiener_win2 + i * wiener_win, deltas,
       H + (i * wiener_win + 1) * wiener_win2 + i * wiener_win + 1);

   // Row 2: 3 points
   int64x2_t src0 =
       vld1q_s64(H + (i * wiener_win + 1) * wiener_win2 + i * wiener_win + 1);
   vst1q_s64(H + (i * wiener_win + 2) * wiener_win2 + i * wiener_win + 2,
             vaddq_s64(src0, vpaddq_s64(deltas[4], deltas[5])));

   int64x2_t deltas69 = vpaddq_s64(deltas[6], deltas[9]);

   H[(i * wiener_win + 2) * wiener_win2 + i * wiener_win + 4] =
       H[(i * wiener_win + 1) * wiener_win2 + i * wiener_win + 3] +
       vgetq_lane_s64(deltas69, 0);

   // Row 3: 2 points
   int64x2_t src1 =
       vld1q_s64(H + (i * wiener_win + 2) * wiener_win2 + i * wiener_win + 2);
   vst1q_s64(H + (i * wiener_win + 3) * wiener_win2 + i * wiener_win + 3,
             vaddq_s64(src1, vpaddq_s64(deltas[7], deltas[8])));

   // Row 4: 1 point
   H[(i * wiener_win + 4) * wiener_win2 + i * wiener_win + 4] =
       H[(i * wiener_win + 3) * wiener_win2 + i * wiener_win + 3] +
       vgetq_lane_s64(deltas69, 1);
 } while (++i < wiener_win);
}

static inline void stats_top_win7_sve(const int16x8_t src[2],
                                     const int16x8_t dgd[2],
                                     const int16_t *const d,
                                     const int32_t d_stride, int64x2_t *sum_m,
                                     int64x2_t *sum_h) {
 int16x8_t dgds[WIENER_WIN * 2];

 load_s16_8x7(d + 0, d_stride, &dgds[0], &dgds[2], &dgds[4], &dgds[6],
              &dgds[8], &dgds[10], &dgds[12]);
 load_s16_8x7(d + 8, d_stride, &dgds[1], &dgds[3], &dgds[5], &dgds[7],
              &dgds[9], &dgds[11], &dgds[13]);

 sum_m[0] = aom_sdotq_s16(sum_m[0], src[0], dgds[0]);
 sum_m[0] = aom_sdotq_s16(sum_m[0], src[1], dgds[1]);
 sum_m[1] = aom_sdotq_s16(sum_m[1], src[0], dgds[2]);
 sum_m[1] = aom_sdotq_s16(sum_m[1], src[1], dgds[3]);
 sum_m[2] = aom_sdotq_s16(sum_m[2], src[0], dgds[4]);
 sum_m[2] = aom_sdotq_s16(sum_m[2], src[1], dgds[5]);
 sum_m[3] = aom_sdotq_s16(sum_m[3], src[0], dgds[6]);
 sum_m[3] = aom_sdotq_s16(sum_m[3], src[1], dgds[7]);
 sum_m[4] = aom_sdotq_s16(sum_m[4], src[0], dgds[8]);
 sum_m[4] = aom_sdotq_s16(sum_m[4], src[1], dgds[9]);
 sum_m[5] = aom_sdotq_s16(sum_m[5], src[0], dgds[10]);
 sum_m[5] = aom_sdotq_s16(sum_m[5], src[1], dgds[11]);
 sum_m[6] = aom_sdotq_s16(sum_m[6], src[0], dgds[12]);
 sum_m[6] = aom_sdotq_s16(sum_m[6], src[1], dgds[13]);

 sum_h[0] = aom_sdotq_s16(sum_h[0], dgd[0], dgds[0]);
 sum_h[0] = aom_sdotq_s16(sum_h[0], dgd[1], dgds[1]);
 sum_h[1] = aom_sdotq_s16(sum_h[1], dgd[0], dgds[2]);
 sum_h[1] = aom_sdotq_s16(sum_h[1], dgd[1], dgds[3]);
 sum_h[2] = aom_sdotq_s16(sum_h[2], dgd[0], dgds[4]);
 sum_h[2] = aom_sdotq_s16(sum_h[2], dgd[1], dgds[5]);
 sum_h[3] = aom_sdotq_s16(sum_h[3], dgd[0], dgds[6]);
 sum_h[3] = aom_sdotq_s16(sum_h[3], dgd[1], dgds[7]);
 sum_h[4] = aom_sdotq_s16(sum_h[4], dgd[0], dgds[8]);
 sum_h[4] = aom_sdotq_s16(sum_h[4], dgd[1], dgds[9]);
 sum_h[5] = aom_sdotq_s16(sum_h[5], dgd[0], dgds[10]);
 sum_h[5] = aom_sdotq_s16(sum_h[5], dgd[1], dgds[11]);
 sum_h[6] = aom_sdotq_s16(sum_h[6], dgd[0], dgds[12]);
 sum_h[6] = aom_sdotq_s16(sum_h[6], dgd[1], dgds[13]);
}

static inline void stats_left_win7_sve(const int16x8_t src[2], const int16_t *d,
                                      const int32_t d_stride, int64x2_t *sum) {
 int16x8_t dgds[WIN_7];

 load_s16_8x6(d + d_stride + 0, d_stride, &dgds[0], &dgds[2], &dgds[4],
              &dgds[6], &dgds[8], &dgds[10]);
 load_s16_8x6(d + d_stride + 8, d_stride, &dgds[1], &dgds[3], &dgds[5],
              &dgds[7], &dgds[9], &dgds[11]);

 sum[0] = aom_sdotq_s16(sum[0], src[0], dgds[0]);
 sum[0] = aom_sdotq_s16(sum[0], src[1], dgds[1]);
 sum[1] = aom_sdotq_s16(sum[1], src[0], dgds[2]);
 sum[1] = aom_sdotq_s16(sum[1], src[1], dgds[3]);
 sum[2] = aom_sdotq_s16(sum[2], src[0], dgds[4]);
 sum[2] = aom_sdotq_s16(sum[2], src[1], dgds[5]);
 sum[3] = aom_sdotq_s16(sum[3], src[0], dgds[6]);
 sum[3] = aom_sdotq_s16(sum[3], src[1], dgds[7]);
 sum[4] = aom_sdotq_s16(sum[4], src[0], dgds[8]);
 sum[4] = aom_sdotq_s16(sum[4], src[1], dgds[9]);
 sum[5] = aom_sdotq_s16(sum[5], src[0], dgds[10]);
 sum[5] = aom_sdotq_s16(sum[5], src[1], dgds[11]);
}

static inline void load_square_win7_sve(
   const int16_t *const di, const int16_t *const dj, const int32_t d_stride,
   const int32_t height, int16x8_t *d_is, int16x8_t *d_ie, int16x8_t *d_js,
   int16x8_t *d_je, svbool_t p0, svbool_t p1) {
 d_is[0] = svget_neonq_s16(svld1_s16(p0, di + 0 * d_stride + 0));
 d_is[1] = svget_neonq_s16(svld1_s16(p1, di + 0 * d_stride + 8));
 d_is[2] = svget_neonq_s16(svld1_s16(p0, di + 1 * d_stride + 0));
 d_is[3] = svget_neonq_s16(svld1_s16(p1, di + 1 * d_stride + 8));
 d_is[4] = svget_neonq_s16(svld1_s16(p0, di + 2 * d_stride + 0));
 d_is[5] = svget_neonq_s16(svld1_s16(p1, di + 2 * d_stride + 8));
 d_is[6] = svget_neonq_s16(svld1_s16(p0, di + 3 * d_stride + 0));
 d_is[7] = svget_neonq_s16(svld1_s16(p1, di + 3 * d_stride + 8));
 d_is[8] = svget_neonq_s16(svld1_s16(p0, di + 4 * d_stride + 0));
 d_is[9] = svget_neonq_s16(svld1_s16(p1, di + 4 * d_stride + 8));
 d_is[10] = svget_neonq_s16(svld1_s16(p0, di + 5 * d_stride + 0));
 d_is[11] = svget_neonq_s16(svld1_s16(p1, di + 5 * d_stride + 8));

 d_ie[0] = svget_neonq_s16(svld1_s16(p0, di + (height + 0) * d_stride + 0));
 d_ie[1] = svget_neonq_s16(svld1_s16(p1, di + (height + 0) * d_stride + 8));
 d_ie[2] = svget_neonq_s16(svld1_s16(p0, di + (height + 1) * d_stride + 0));
 d_ie[3] = svget_neonq_s16(svld1_s16(p1, di + (height + 1) * d_stride + 8));
 d_ie[4] = svget_neonq_s16(svld1_s16(p0, di + (height + 2) * d_stride + 0));
 d_ie[5] = svget_neonq_s16(svld1_s16(p1, di + (height + 2) * d_stride + 8));
 d_ie[6] = svget_neonq_s16(svld1_s16(p0, di + (height + 3) * d_stride + 0));
 d_ie[7] = svget_neonq_s16(svld1_s16(p1, di + (height + 3) * d_stride + 8));
 d_ie[8] = svget_neonq_s16(svld1_s16(p0, di + (height + 4) * d_stride + 0));
 d_ie[9] = svget_neonq_s16(svld1_s16(p1, di + (height + 4) * d_stride + 8));
 d_ie[10] = svget_neonq_s16(svld1_s16(p0, di + (height + 5) * d_stride + 0));
 d_ie[11] = svget_neonq_s16(svld1_s16(p1, di + (height + 5) * d_stride + 8));

 load_s16_8x6(dj + 0, d_stride, &d_js[0], &d_js[2], &d_js[4], &d_js[6],
              &d_js[8], &d_js[10]);
 load_s16_8x6(dj + 8, d_stride, &d_js[1], &d_js[3], &d_js[5], &d_js[7],
              &d_js[9], &d_js[11]);
 load_s16_8x6(dj + height * d_stride + 0, d_stride, &d_je[0], &d_je[2],
              &d_je[4], &d_je[6], &d_je[8], &d_je[10]);
 load_s16_8x6(dj + height * d_stride + 8, d_stride, &d_je[1], &d_je[3],
              &d_je[5], &d_je[7], &d_je[9], &d_je[11]);
}

static inline void derive_square_win7_sve(int16x8_t *d_is,
                                         const int16x8_t *d_ie,
                                         const int16x8_t *d_js,
                                         const int16x8_t *d_je,
                                         int64x2_t deltas[][WIN_7]) {
 d_is[0] = vnegq_s16(d_is[0]);
 d_is[1] = vnegq_s16(d_is[1]);
 d_is[2] = vnegq_s16(d_is[2]);
 d_is[3] = vnegq_s16(d_is[3]);
 d_is[4] = vnegq_s16(d_is[4]);
 d_is[5] = vnegq_s16(d_is[5]);
 d_is[6] = vnegq_s16(d_is[6]);
 d_is[7] = vnegq_s16(d_is[7]);
 d_is[8] = vnegq_s16(d_is[8]);
 d_is[9] = vnegq_s16(d_is[9]);
 d_is[10] = vnegq_s16(d_is[10]);
 d_is[11] = vnegq_s16(d_is[11]);

 deltas[0][0] = aom_sdotq_s16(deltas[0][0], d_is[0], d_js[0]);
 deltas[0][0] = aom_sdotq_s16(deltas[0][0], d_is[1], d_js[1]);
 deltas[0][1] = aom_sdotq_s16(deltas[0][1], d_is[0], d_js[2]);
 deltas[0][1] = aom_sdotq_s16(deltas[0][1], d_is[1], d_js[3]);
 deltas[0][2] = aom_sdotq_s16(deltas[0][2], d_is[0], d_js[4]);
 deltas[0][2] = aom_sdotq_s16(deltas[0][2], d_is[1], d_js[5]);
 deltas[0][3] = aom_sdotq_s16(deltas[0][3], d_is[0], d_js[6]);
 deltas[0][3] = aom_sdotq_s16(deltas[0][3], d_is[1], d_js[7]);
 deltas[0][4] = aom_sdotq_s16(deltas[0][4], d_is[0], d_js[8]);
 deltas[0][4] = aom_sdotq_s16(deltas[0][4], d_is[1], d_js[9]);
 deltas[0][5] = aom_sdotq_s16(deltas[0][5], d_is[0], d_js[10]);
 deltas[0][5] = aom_sdotq_s16(deltas[0][5], d_is[1], d_js[11]);

 deltas[1][0] = aom_sdotq_s16(deltas[1][0], d_is[2], d_js[0]);
 deltas[1][0] = aom_sdotq_s16(deltas[1][0], d_is[3], d_js[1]);
 deltas[1][1] = aom_sdotq_s16(deltas[1][1], d_is[2], d_js[2]);
 deltas[1][1] = aom_sdotq_s16(deltas[1][1], d_is[3], d_js[3]);
 deltas[1][2] = aom_sdotq_s16(deltas[1][2], d_is[2], d_js[4]);
 deltas[1][2] = aom_sdotq_s16(deltas[1][2], d_is[3], d_js[5]);
 deltas[1][3] = aom_sdotq_s16(deltas[1][3], d_is[2], d_js[6]);
 deltas[1][3] = aom_sdotq_s16(deltas[1][3], d_is[3], d_js[7]);
 deltas[1][4] = aom_sdotq_s16(deltas[1][4], d_is[2], d_js[8]);
 deltas[1][4] = aom_sdotq_s16(deltas[1][4], d_is[3], d_js[9]);
 deltas[1][5] = aom_sdotq_s16(deltas[1][5], d_is[2], d_js[10]);
 deltas[1][5] = aom_sdotq_s16(deltas[1][5], d_is[3], d_js[11]);

 deltas[2][0] = aom_sdotq_s16(deltas[2][0], d_is[4], d_js[0]);
 deltas[2][0] = aom_sdotq_s16(deltas[2][0], d_is[5], d_js[1]);
 deltas[2][1] = aom_sdotq_s16(deltas[2][1], d_is[4], d_js[2]);
 deltas[2][1] = aom_sdotq_s16(deltas[2][1], d_is[5], d_js[3]);
 deltas[2][2] = aom_sdotq_s16(deltas[2][2], d_is[4], d_js[4]);
 deltas[2][2] = aom_sdotq_s16(deltas[2][2], d_is[5], d_js[5]);
 deltas[2][3] = aom_sdotq_s16(deltas[2][3], d_is[4], d_js[6]);
 deltas[2][3] = aom_sdotq_s16(deltas[2][3], d_is[5], d_js[7]);
 deltas[2][4] = aom_sdotq_s16(deltas[2][4], d_is[4], d_js[8]);
 deltas[2][4] = aom_sdotq_s16(deltas[2][4], d_is[5], d_js[9]);
 deltas[2][5] = aom_sdotq_s16(deltas[2][5], d_is[4], d_js[10]);
 deltas[2][5] = aom_sdotq_s16(deltas[2][5], d_is[5], d_js[11]);

 deltas[3][0] = aom_sdotq_s16(deltas[3][0], d_is[6], d_js[0]);
 deltas[3][0] = aom_sdotq_s16(deltas[3][0], d_is[7], d_js[1]);
 deltas[3][1] = aom_sdotq_s16(deltas[3][1], d_is[6], d_js[2]);
 deltas[3][1] = aom_sdotq_s16(deltas[3][1], d_is[7], d_js[3]);
 deltas[3][2] = aom_sdotq_s16(deltas[3][2], d_is[6], d_js[4]);
 deltas[3][2] = aom_sdotq_s16(deltas[3][2], d_is[7], d_js[5]);
 deltas[3][3] = aom_sdotq_s16(deltas[3][3], d_is[6], d_js[6]);
 deltas[3][3] = aom_sdotq_s16(deltas[3][3], d_is[7], d_js[7]);
 deltas[3][4] = aom_sdotq_s16(deltas[3][4], d_is[6], d_js[8]);
 deltas[3][4] = aom_sdotq_s16(deltas[3][4], d_is[7], d_js[9]);
 deltas[3][5] = aom_sdotq_s16(deltas[3][5], d_is[6], d_js[10]);
 deltas[3][5] = aom_sdotq_s16(deltas[3][5], d_is[7], d_js[11]);

 deltas[4][0] = aom_sdotq_s16(deltas[4][0], d_is[8], d_js[0]);
 deltas[4][0] = aom_sdotq_s16(deltas[4][0], d_is[9], d_js[1]);
 deltas[4][1] = aom_sdotq_s16(deltas[4][1], d_is[8], d_js[2]);
 deltas[4][1] = aom_sdotq_s16(deltas[4][1], d_is[9], d_js[3]);
 deltas[4][2] = aom_sdotq_s16(deltas[4][2], d_is[8], d_js[4]);
 deltas[4][2] = aom_sdotq_s16(deltas[4][2], d_is[9], d_js[5]);
 deltas[4][3] = aom_sdotq_s16(deltas[4][3], d_is[8], d_js[6]);
 deltas[4][3] = aom_sdotq_s16(deltas[4][3], d_is[9], d_js[7]);
 deltas[4][4] = aom_sdotq_s16(deltas[4][4], d_is[8], d_js[8]);
 deltas[4][4] = aom_sdotq_s16(deltas[4][4], d_is[9], d_js[9]);
 deltas[4][5] = aom_sdotq_s16(deltas[4][5], d_is[8], d_js[10]);
 deltas[4][5] = aom_sdotq_s16(deltas[4][5], d_is[9], d_js[11]);

 deltas[5][0] = aom_sdotq_s16(deltas[5][0], d_is[10], d_js[0]);
 deltas[5][0] = aom_sdotq_s16(deltas[5][0], d_is[11], d_js[1]);
 deltas[5][1] = aom_sdotq_s16(deltas[5][1], d_is[10], d_js[2]);
 deltas[5][1] = aom_sdotq_s16(deltas[5][1], d_is[11], d_js[3]);
 deltas[5][2] = aom_sdotq_s16(deltas[5][2], d_is[10], d_js[4]);
 deltas[5][2] = aom_sdotq_s16(deltas[5][2], d_is[11], d_js[5]);
 deltas[5][3] = aom_sdotq_s16(deltas[5][3], d_is[10], d_js[6]);
 deltas[5][3] = aom_sdotq_s16(deltas[5][3], d_is[11], d_js[7]);
 deltas[5][4] = aom_sdotq_s16(deltas[5][4], d_is[10], d_js[8]);
 deltas[5][4] = aom_sdotq_s16(deltas[5][4], d_is[11], d_js[9]);
 deltas[5][5] = aom_sdotq_s16(deltas[5][5], d_is[10], d_js[10]);
 deltas[5][5] = aom_sdotq_s16(deltas[5][5], d_is[11], d_js[11]);

 deltas[0][0] = aom_sdotq_s16(deltas[0][0], d_ie[0], d_je[0]);
 deltas[0][0] = aom_sdotq_s16(deltas[0][0], d_ie[1], d_je[1]);
 deltas[0][1] = aom_sdotq_s16(deltas[0][1], d_ie[0], d_je[2]);
 deltas[0][1] = aom_sdotq_s16(deltas[0][1], d_ie[1], d_je[3]);
 deltas[0][2] = aom_sdotq_s16(deltas[0][2], d_ie[0], d_je[4]);
 deltas[0][2] = aom_sdotq_s16(deltas[0][2], d_ie[1], d_je[5]);
 deltas[0][3] = aom_sdotq_s16(deltas[0][3], d_ie[0], d_je[6]);
 deltas[0][3] = aom_sdotq_s16(deltas[0][3], d_ie[1], d_je[7]);
 deltas[0][4] = aom_sdotq_s16(deltas[0][4], d_ie[0], d_je[8]);
 deltas[0][4] = aom_sdotq_s16(deltas[0][4], d_ie[1], d_je[9]);
 deltas[0][5] = aom_sdotq_s16(deltas[0][5], d_ie[0], d_je[10]);
 deltas[0][5] = aom_sdotq_s16(deltas[0][5], d_ie[1], d_je[11]);

 deltas[1][0] = aom_sdotq_s16(deltas[1][0], d_ie[2], d_je[0]);
 deltas[1][0] = aom_sdotq_s16(deltas[1][0], d_ie[3], d_je[1]);
 deltas[1][1] = aom_sdotq_s16(deltas[1][1], d_ie[2], d_je[2]);
 deltas[1][1] = aom_sdotq_s16(deltas[1][1], d_ie[3], d_je[3]);
 deltas[1][2] = aom_sdotq_s16(deltas[1][2], d_ie[2], d_je[4]);
 deltas[1][2] = aom_sdotq_s16(deltas[1][2], d_ie[3], d_je[5]);
 deltas[1][3] = aom_sdotq_s16(deltas[1][3], d_ie[2], d_je[6]);
 deltas[1][3] = aom_sdotq_s16(deltas[1][3], d_ie[3], d_je[7]);
 deltas[1][4] = aom_sdotq_s16(deltas[1][4], d_ie[2], d_je[8]);
 deltas[1][4] = aom_sdotq_s16(deltas[1][4], d_ie[3], d_je[9]);
 deltas[1][5] = aom_sdotq_s16(deltas[1][5], d_ie[2], d_je[10]);
 deltas[1][5] = aom_sdotq_s16(deltas[1][5], d_ie[3], d_je[11]);

 deltas[2][0] = aom_sdotq_s16(deltas[2][0], d_ie[4], d_je[0]);
 deltas[2][0] = aom_sdotq_s16(deltas[2][0], d_ie[5], d_je[1]);
 deltas[2][1] = aom_sdotq_s16(deltas[2][1], d_ie[4], d_je[2]);
 deltas[2][1] = aom_sdotq_s16(deltas[2][1], d_ie[5], d_je[3]);
 deltas[2][2] = aom_sdotq_s16(deltas[2][2], d_ie[4], d_je[4]);
 deltas[2][2] = aom_sdotq_s16(deltas[2][2], d_ie[5], d_je[5]);
 deltas[2][3] = aom_sdotq_s16(deltas[2][3], d_ie[4], d_je[6]);
 deltas[2][3] = aom_sdotq_s16(deltas[2][3], d_ie[5], d_je[7]);
 deltas[2][4] = aom_sdotq_s16(deltas[2][4], d_ie[4], d_je[8]);
 deltas[2][4] = aom_sdotq_s16(deltas[2][4], d_ie[5], d_je[9]);
 deltas[2][5] = aom_sdotq_s16(deltas[2][5], d_ie[4], d_je[10]);
 deltas[2][5] = aom_sdotq_s16(deltas[2][5], d_ie[5], d_je[11]);

 deltas[3][0] = aom_sdotq_s16(deltas[3][0], d_ie[6], d_je[0]);
 deltas[3][0] = aom_sdotq_s16(deltas[3][0], d_ie[7], d_je[1]);
 deltas[3][1] = aom_sdotq_s16(deltas[3][1], d_ie[6], d_je[2]);
 deltas[3][1] = aom_sdotq_s16(deltas[3][1], d_ie[7], d_je[3]);
 deltas[3][2] = aom_sdotq_s16(deltas[3][2], d_ie[6], d_je[4]);
 deltas[3][2] = aom_sdotq_s16(deltas[3][2], d_ie[7], d_je[5]);
 deltas[3][3] = aom_sdotq_s16(deltas[3][3], d_ie[6], d_je[6]);
 deltas[3][3] = aom_sdotq_s16(deltas[3][3], d_ie[7], d_je[7]);
 deltas[3][4] = aom_sdotq_s16(deltas[3][4], d_ie[6], d_je[8]);
 deltas[3][4] = aom_sdotq_s16(deltas[3][4], d_ie[7], d_je[9]);
 deltas[3][5] = aom_sdotq_s16(deltas[3][5], d_ie[6], d_je[10]);
 deltas[3][5] = aom_sdotq_s16(deltas[3][5], d_ie[7], d_je[11]);

 deltas[4][0] = aom_sdotq_s16(deltas[4][0], d_ie[8], d_je[0]);
 deltas[4][0] = aom_sdotq_s16(deltas[4][0], d_ie[9], d_je[1]);
 deltas[4][1] = aom_sdotq_s16(deltas[4][1], d_ie[8], d_je[2]);
 deltas[4][1] = aom_sdotq_s16(deltas[4][1], d_ie[9], d_je[3]);
 deltas[4][2] = aom_sdotq_s16(deltas[4][2], d_ie[8], d_je[4]);
 deltas[4][2] = aom_sdotq_s16(deltas[4][2], d_ie[9], d_je[5]);
 deltas[4][3] = aom_sdotq_s16(deltas[4][3], d_ie[8], d_je[6]);
 deltas[4][3] = aom_sdotq_s16(deltas[4][3], d_ie[9], d_je[7]);
 deltas[4][4] = aom_sdotq_s16(deltas[4][4], d_ie[8], d_je[8]);
 deltas[4][4] = aom_sdotq_s16(deltas[4][4], d_ie[9], d_je[9]);
 deltas[4][5] = aom_sdotq_s16(deltas[4][5], d_ie[8], d_je[10]);
 deltas[4][5] = aom_sdotq_s16(deltas[4][5], d_ie[9], d_je[11]);

 deltas[5][0] = aom_sdotq_s16(deltas[5][0], d_ie[10], d_je[0]);
 deltas[5][0] = aom_sdotq_s16(deltas[5][0], d_ie[11], d_je[1]);
 deltas[5][1] = aom_sdotq_s16(deltas[5][1], d_ie[10], d_je[2]);
 deltas[5][1] = aom_sdotq_s16(deltas[5][1], d_ie[11], d_je[3]);
 deltas[5][2] = aom_sdotq_s16(deltas[5][2], d_ie[10], d_je[4]);
 deltas[5][2] = aom_sdotq_s16(deltas[5][2], d_ie[11], d_je[5]);
 deltas[5][3] = aom_sdotq_s16(deltas[5][3], d_ie[10], d_je[6]);
 deltas[5][3] = aom_sdotq_s16(deltas[5][3], d_ie[11], d_je[7]);
 deltas[5][4] = aom_sdotq_s16(deltas[5][4], d_ie[10], d_je[8]);
 deltas[5][4] = aom_sdotq_s16(deltas[5][4], d_ie[11], d_je[9]);
 deltas[5][5] = aom_sdotq_s16(deltas[5][5], d_ie[10], d_je[10]);
 deltas[5][5] = aom_sdotq_s16(deltas[5][5], d_ie[11], d_je[11]);
}

static inline void hadd_update_6_stats_sve(const int64_t *const src,
                                          const int64x2_t *deltas,
                                          int64_t *const dst) {
 int64x2_t src0 = vld1q_s64(src + 0);
 int64x2_t src1 = vld1q_s64(src + 2);
 int64x2_t src2 = vld1q_s64(src + 4);

 int64x2_t deltas01 = vpaddq_s64(deltas[0], deltas[1]);
 int64x2_t deltas23 = vpaddq_s64(deltas[2], deltas[3]);
 int64x2_t deltas45 = vpaddq_s64(deltas[4], deltas[5]);

 vst1q_s64(dst + 0, vaddq_s64(src0, deltas01));
 vst1q_s64(dst + 2, vaddq_s64(src1, deltas23));
 vst1q_s64(dst + 4, vaddq_s64(src2, deltas45));
}

static inline void load_triangle_win7_sve(const int16_t *const di,
                                         const int32_t d_stride,
                                         const int32_t height, int16x8_t *d_is,
                                         int16x8_t *d_ie, svbool_t p0,
                                         svbool_t p1) {
 d_is[0] = svget_neonq_s16(svld1_s16(p0, di + 0 * d_stride + 0));
 d_is[1] = svget_neonq_s16(svld1_s16(p1, di + 0 * d_stride + 8));
 d_is[2] = svget_neonq_s16(svld1_s16(p0, di + 1 * d_stride + 0));
 d_is[3] = svget_neonq_s16(svld1_s16(p1, di + 1 * d_stride + 8));
 d_is[4] = svget_neonq_s16(svld1_s16(p0, di + 2 * d_stride + 0));
 d_is[5] = svget_neonq_s16(svld1_s16(p1, di + 2 * d_stride + 8));
 d_is[6] = svget_neonq_s16(svld1_s16(p0, di + 3 * d_stride + 0));
 d_is[7] = svget_neonq_s16(svld1_s16(p1, di + 3 * d_stride + 8));
 d_is[8] = svget_neonq_s16(svld1_s16(p0, di + 4 * d_stride + 0));
 d_is[9] = svget_neonq_s16(svld1_s16(p1, di + 4 * d_stride + 8));
 d_is[10] = svget_neonq_s16(svld1_s16(p0, di + 5 * d_stride + 0));
 d_is[11] = svget_neonq_s16(svld1_s16(p1, di + 5 * d_stride + 8));

 d_ie[0] = svget_neonq_s16(svld1_s16(p0, di + (height + 0) * d_stride + 0));
 d_ie[1] = svget_neonq_s16(svld1_s16(p1, di + (height + 0) * d_stride + 8));
 d_ie[2] = svget_neonq_s16(svld1_s16(p0, di + (height + 1) * d_stride + 0));
 d_ie[3] = svget_neonq_s16(svld1_s16(p1, di + (height + 1) * d_stride + 8));
 d_ie[4] = svget_neonq_s16(svld1_s16(p0, di + (height + 2) * d_stride + 0));
 d_ie[5] = svget_neonq_s16(svld1_s16(p1, di + (height + 2) * d_stride + 8));
 d_ie[6] = svget_neonq_s16(svld1_s16(p0, di + (height + 3) * d_stride + 0));
 d_ie[7] = svget_neonq_s16(svld1_s16(p1, di + (height + 3) * d_stride + 8));
 d_ie[8] = svget_neonq_s16(svld1_s16(p0, di + (height + 4) * d_stride + 0));
 d_ie[9] = svget_neonq_s16(svld1_s16(p1, di + (height + 4) * d_stride + 8));
 d_ie[10] = svget_neonq_s16(svld1_s16(p0, di + (height + 5) * d_stride + 0));
 d_ie[11] = svget_neonq_s16(svld1_s16(p1, di + (height + 5) * d_stride + 8));
}

static inline void derive_triangle_win7_sve(const int16x8_t *d_is,
                                           const int16x8_t *d_ie,
                                           int64x2_t *deltas) {
 deltas[0] = aom_sdotq_s16(deltas[0], vnegq_s16(d_is[0]), d_is[0]);
 deltas[0] = aom_sdotq_s16(deltas[0], vnegq_s16(d_is[1]), d_is[1]);
 deltas[1] = aom_sdotq_s16(deltas[1], vnegq_s16(d_is[0]), d_is[2]);
 deltas[1] = aom_sdotq_s16(deltas[1], vnegq_s16(d_is[1]), d_is[3]);
 deltas[2] = aom_sdotq_s16(deltas[2], vnegq_s16(d_is[0]), d_is[4]);
 deltas[2] = aom_sdotq_s16(deltas[2], vnegq_s16(d_is[1]), d_is[5]);
 deltas[3] = aom_sdotq_s16(deltas[3], vnegq_s16(d_is[0]), d_is[6]);
 deltas[3] = aom_sdotq_s16(deltas[3], vnegq_s16(d_is[1]), d_is[7]);
 deltas[4] = aom_sdotq_s16(deltas[4], vnegq_s16(d_is[0]), d_is[8]);
 deltas[4] = aom_sdotq_s16(deltas[4], vnegq_s16(d_is[1]), d_is[9]);
 deltas[5] = aom_sdotq_s16(deltas[5], vnegq_s16(d_is[0]), d_is[10]);
 deltas[5] = aom_sdotq_s16(deltas[5], vnegq_s16(d_is[1]), d_is[11]);

 deltas[6] = aom_sdotq_s16(deltas[6], vnegq_s16(d_is[2]), d_is[2]);
 deltas[6] = aom_sdotq_s16(deltas[6], vnegq_s16(d_is[3]), d_is[3]);
 deltas[7] = aom_sdotq_s16(deltas[7], vnegq_s16(d_is[2]), d_is[4]);
 deltas[7] = aom_sdotq_s16(deltas[7], vnegq_s16(d_is[3]), d_is[5]);
 deltas[8] = aom_sdotq_s16(deltas[8], vnegq_s16(d_is[2]), d_is[6]);
 deltas[8] = aom_sdotq_s16(deltas[8], vnegq_s16(d_is[3]), d_is[7]);
 deltas[9] = aom_sdotq_s16(deltas[9], vnegq_s16(d_is[2]), d_is[8]);
 deltas[9] = aom_sdotq_s16(deltas[9], vnegq_s16(d_is[3]), d_is[9]);
 deltas[10] = aom_sdotq_s16(deltas[10], vnegq_s16(d_is[2]), d_is[10]);
 deltas[10] = aom_sdotq_s16(deltas[10], vnegq_s16(d_is[3]), d_is[11]);

 deltas[11] = aom_sdotq_s16(deltas[11], vnegq_s16(d_is[4]), d_is[4]);
 deltas[11] = aom_sdotq_s16(deltas[11], vnegq_s16(d_is[5]), d_is[5]);
 deltas[12] = aom_sdotq_s16(deltas[12], vnegq_s16(d_is[4]), d_is[6]);
 deltas[12] = aom_sdotq_s16(deltas[12], vnegq_s16(d_is[5]), d_is[7]);
 deltas[13] = aom_sdotq_s16(deltas[13], vnegq_s16(d_is[4]), d_is[8]);
 deltas[13] = aom_sdotq_s16(deltas[13], vnegq_s16(d_is[5]), d_is[9]);
 deltas[14] = aom_sdotq_s16(deltas[14], vnegq_s16(d_is[4]), d_is[10]);
 deltas[14] = aom_sdotq_s16(deltas[14], vnegq_s16(d_is[5]), d_is[11]);

 deltas[15] = aom_sdotq_s16(deltas[15], vnegq_s16(d_is[6]), d_is[6]);
 deltas[15] = aom_sdotq_s16(deltas[15], vnegq_s16(d_is[7]), d_is[7]);
 deltas[16] = aom_sdotq_s16(deltas[16], vnegq_s16(d_is[6]), d_is[8]);
 deltas[16] = aom_sdotq_s16(deltas[16], vnegq_s16(d_is[7]), d_is[9]);
 deltas[17] = aom_sdotq_s16(deltas[17], vnegq_s16(d_is[6]), d_is[10]);
 deltas[17] = aom_sdotq_s16(deltas[17], vnegq_s16(d_is[7]), d_is[11]);

 deltas[18] = aom_sdotq_s16(deltas[18], vnegq_s16(d_is[8]), d_is[8]);
 deltas[18] = aom_sdotq_s16(deltas[18], vnegq_s16(d_is[9]), d_is[9]);
 deltas[19] = aom_sdotq_s16(deltas[19], vnegq_s16(d_is[8]), d_is[10]);
 deltas[19] = aom_sdotq_s16(deltas[19], vnegq_s16(d_is[9]), d_is[11]);

 deltas[20] = aom_sdotq_s16(deltas[20], vnegq_s16(d_is[10]), d_is[10]);
 deltas[20] = aom_sdotq_s16(deltas[20], vnegq_s16(d_is[11]), d_is[11]);

 deltas[0] = aom_sdotq_s16(deltas[0], d_ie[0], d_ie[0]);
 deltas[0] = aom_sdotq_s16(deltas[0], d_ie[1], d_ie[1]);
 deltas[1] = aom_sdotq_s16(deltas[1], d_ie[0], d_ie[2]);
 deltas[1] = aom_sdotq_s16(deltas[1], d_ie[1], d_ie[3]);
 deltas[2] = aom_sdotq_s16(deltas[2], d_ie[0], d_ie[4]);
 deltas[2] = aom_sdotq_s16(deltas[2], d_ie[1], d_ie[5]);
 deltas[3] = aom_sdotq_s16(deltas[3], d_ie[0], d_ie[6]);
 deltas[3] = aom_sdotq_s16(deltas[3], d_ie[1], d_ie[7]);
 deltas[4] = aom_sdotq_s16(deltas[4], d_ie[0], d_ie[8]);
 deltas[4] = aom_sdotq_s16(deltas[4], d_ie[1], d_ie[9]);
 deltas[5] = aom_sdotq_s16(deltas[5], d_ie[0], d_ie[10]);
 deltas[5] = aom_sdotq_s16(deltas[5], d_ie[1], d_ie[11]);

 deltas[6] = aom_sdotq_s16(deltas[6], d_ie[2], d_ie[2]);
 deltas[6] = aom_sdotq_s16(deltas[6], d_ie[3], d_ie[3]);
 deltas[7] = aom_sdotq_s16(deltas[7], d_ie[2], d_ie[4]);
 deltas[7] = aom_sdotq_s16(deltas[7], d_ie[3], d_ie[5]);
 deltas[8] = aom_sdotq_s16(deltas[8], d_ie[2], d_ie[6]);
 deltas[8] = aom_sdotq_s16(deltas[8], d_ie[3], d_ie[7]);
 deltas[9] = aom_sdotq_s16(deltas[9], d_ie[2], d_ie[8]);
 deltas[9] = aom_sdotq_s16(deltas[9], d_ie[3], d_ie[9]);
 deltas[10] = aom_sdotq_s16(deltas[10], d_ie[2], d_ie[10]);
 deltas[10] = aom_sdotq_s16(deltas[10], d_ie[3], d_ie[11]);

 deltas[11] = aom_sdotq_s16(deltas[11], d_ie[4], d_ie[4]);
 deltas[11] = aom_sdotq_s16(deltas[11], d_ie[5], d_ie[5]);
 deltas[12] = aom_sdotq_s16(deltas[12], d_ie[4], d_ie[6]);
 deltas[12] = aom_sdotq_s16(deltas[12], d_ie[5], d_ie[7]);
 deltas[13] = aom_sdotq_s16(deltas[13], d_ie[4], d_ie[8]);
 deltas[13] = aom_sdotq_s16(deltas[13], d_ie[5], d_ie[9]);
 deltas[14] = aom_sdotq_s16(deltas[14], d_ie[4], d_ie[10]);
 deltas[14] = aom_sdotq_s16(deltas[14], d_ie[5], d_ie[11]);

 deltas[15] = aom_sdotq_s16(deltas[15], d_ie[6], d_ie[6]);
 deltas[15] = aom_sdotq_s16(deltas[15], d_ie[7], d_ie[7]);
 deltas[16] = aom_sdotq_s16(deltas[16], d_ie[6], d_ie[8]);
 deltas[16] = aom_sdotq_s16(deltas[16], d_ie[7], d_ie[9]);
 deltas[17] = aom_sdotq_s16(deltas[17], d_ie[6], d_ie[10]);
 deltas[17] = aom_sdotq_s16(deltas[17], d_ie[7], d_ie[11]);

 deltas[18] = aom_sdotq_s16(deltas[18], d_ie[8], d_ie[8]);
 deltas[18] = aom_sdotq_s16(deltas[18], d_ie[9], d_ie[9]);
 deltas[19] = aom_sdotq_s16(deltas[19], d_ie[8], d_ie[10]);
 deltas[19] = aom_sdotq_s16(deltas[19], d_ie[9], d_ie[11]);

 deltas[20] = aom_sdotq_s16(deltas[20], d_ie[10], d_ie[10]);
 deltas[20] = aom_sdotq_s16(deltas[20], d_ie[11], d_ie[11]);
}

static inline void compute_stats_win7_sve(
   const int16_t *const d, const int32_t d_stride, const int16_t *const s,
   const int32_t s_stride, const int32_t width, const int32_t height,
   int64_t *const M, int64_t *const H) {
 const int32_t wiener_win = WIENER_WIN;
 const int32_t wiener_win2 = wiener_win * wiener_win;
 const int32_t h8 = height & ~7;
 int32_t i, j, x, y;

 // Use a predicate to compute the last columns.
 svbool_t p0 = svwhilelt_b16_u32(0, width % 16 == 0 ? 16 : width % 16);
 svbool_t p1 = svwhilelt_b16_u32(8, width % 16 == 0 ? 16 : width % 16);

 // Step 1: Calculate the top edge of the whole matrix, i.e., the top
 // edge of each triangle and square on the top row.
 j = 0;
 do {
   const int16_t *s_t = s;
   const int16_t *d_t = d;
   int64x2_t sum_m[WIENER_WIN] = { vdupq_n_s64(0) };
   int64x2_t sum_h[WIENER_WIN] = { vdupq_n_s64(0) };
   int16x8_t src[2], dgd[2];

   y = height;
   do {
     x = 0;
     while (x < width - 16) {
       src[0] = vld1q_s16(s_t + x + 0);
       src[1] = vld1q_s16(s_t + x + 8);
       dgd[0] = vld1q_s16(d_t + x + 0);
       dgd[1] = vld1q_s16(d_t + x + 8);
       stats_top_win7_sve(src, dgd, d_t + j + x, d_stride, sum_m, sum_h);
       x += 16;
     }

     src[0] = svget_neonq_s16(svld1_s16(p0, s_t + x + 0));
     src[1] = svget_neonq_s16(svld1_s16(p1, s_t + x + 8));
     dgd[0] = svget_neonq_s16(svld1_s16(p0, d_t + x + 0));
     dgd[1] = svget_neonq_s16(svld1_s16(p1, d_t + x + 8));
     stats_top_win7_sve(src, dgd, d_t + j + x, d_stride, sum_m, sum_h);

     s_t += s_stride;
     d_t += d_stride;
   } while (--y);

   vst1q_s64(M + wiener_win * j + 0, vpaddq_s64(sum_m[0], sum_m[1]));
   vst1q_s64(M + wiener_win * j + 2, vpaddq_s64(sum_m[2], sum_m[3]));
   vst1q_s64(M + wiener_win * j + 4, vpaddq_s64(sum_m[4], sum_m[5]));
   M[wiener_win * j + 6] = vaddvq_s64(sum_m[6]);

   vst1q_s64(H + wiener_win * j + 0, vpaddq_s64(sum_h[0], sum_h[1]));
   vst1q_s64(H + wiener_win * j + 2, vpaddq_s64(sum_h[2], sum_h[3]));
   vst1q_s64(H + wiener_win * j + 4, vpaddq_s64(sum_h[4], sum_h[5]));
   H[wiener_win * j + 6] = vaddvq_s64(sum_h[6]);
 } while (++j < wiener_win);

 // Step 2: Calculate the left edge of each square on the top row.
 j = 1;
 do {
   const int16_t *d_t = d;
   int64x2_t sum_h[WIENER_WIN - 1] = { vdupq_n_s64(0) };
   int16x8_t dgd[2];

   y = height;
   do {
     x = 0;
     while (x < width - 16) {
       dgd[0] = vld1q_s16(d_t + j + x + 0);
       dgd[1] = vld1q_s16(d_t + j + x + 8);
       stats_left_win7_sve(dgd, d_t + x, d_stride, sum_h);
       x += 16;
     }

     dgd[0] = svget_neonq_s16(svld1_s16(p0, d_t + j + x + 0));
     dgd[1] = svget_neonq_s16(svld1_s16(p1, d_t + j + x + 8));
     stats_left_win7_sve(dgd, d_t + x, d_stride, sum_h);

     d_t += d_stride;
   } while (--y);

   int64x2_t sum_h01 = vpaddq_s64(sum_h[0], sum_h[1]);
   int64x2_t sum_h23 = vpaddq_s64(sum_h[2], sum_h[3]);
   int64x2_t sum_h45 = vpaddq_s64(sum_h[4], sum_h[5]);
   vst1_s64(&H[1 * wiener_win2 + j * wiener_win], vget_low_s64(sum_h01));
   vst1_s64(&H[2 * wiener_win2 + j * wiener_win], vget_high_s64(sum_h01));
   vst1_s64(&H[3 * wiener_win2 + j * wiener_win], vget_low_s64(sum_h23));
   vst1_s64(&H[4 * wiener_win2 + j * wiener_win], vget_high_s64(sum_h23));
   vst1_s64(&H[5 * wiener_win2 + j * wiener_win], vget_low_s64(sum_h45));
   vst1_s64(&H[6 * wiener_win2 + j * wiener_win], vget_high_s64(sum_h45));
 } while (++j < wiener_win);

 // Step 3: Derive the top edge of each triangle along the diagonal. No
 // triangle in top row.
 {
   const int16_t *d_t = d;
   // Pad to call transpose function.
   int32x4_t deltas[(WIENER_WIN + 1) * 2] = { vdupq_n_s32(0) };
   int32x4_t deltas_tr[(WIENER_WIN + 1) * 2] = { vdupq_n_s32(0) };
   int16x8_t ds[WIENER_WIN * 2];

   load_s16_8x6(d_t, d_stride, &ds[0], &ds[2], &ds[4], &ds[6], &ds[8],
                &ds[10]);
   load_s16_8x6(d_t + width, d_stride, &ds[1], &ds[3], &ds[5], &ds[7], &ds[9],
                &ds[11]);

   d_t += 6 * d_stride;

   step3_win7_neon(d_t, d_stride, width, height, ds, deltas);
   transpose_arrays_s32_8x8(deltas, deltas_tr);

   update_8_stats_neon(H + 0 * wiener_win * wiener_win2 + 0 * wiener_win,
                       deltas_tr[0], deltas_tr[4],
                       H + 1 * wiener_win * wiener_win2 + 1 * wiener_win);
   update_8_stats_neon(H + 1 * wiener_win * wiener_win2 + 1 * wiener_win,
                       deltas_tr[1], deltas_tr[5],
                       H + 2 * wiener_win * wiener_win2 + 2 * wiener_win);
   update_8_stats_neon(H + 2 * wiener_win * wiener_win2 + 2 * wiener_win,
                       deltas_tr[2], deltas_tr[6],
                       H + 3 * wiener_win * wiener_win2 + 3 * wiener_win);
   update_8_stats_neon(H + 3 * wiener_win * wiener_win2 + 3 * wiener_win,
                       deltas_tr[3], deltas_tr[7],
                       H + 4 * wiener_win * wiener_win2 + 4 * wiener_win);
   update_8_stats_neon(H + 4 * wiener_win * wiener_win2 + 4 * wiener_win,
                       deltas_tr[8], deltas_tr[12],
                       H + 5 * wiener_win * wiener_win2 + 5 * wiener_win);
   update_8_stats_neon(H + 5 * wiener_win * wiener_win2 + 5 * wiener_win,
                       deltas_tr[9], deltas_tr[13],
                       H + 6 * wiener_win * wiener_win2 + 6 * wiener_win);
 }

 // Step 4: Derive the top and left edge of each square. No square in top and
 // bottom row.

 i = 1;
 do {
   j = i + 1;
   do {
     const int16_t *di = d + i - 1;
     const int16_t *dj = d + j - 1;
     int64x2_t deltas[(2 * WIENER_WIN - 1) * 2] = { vdupq_n_s64(0) };
     int16x8_t dd[WIENER_WIN * 2], ds[WIENER_WIN * 2];

     dd[5] = vdupq_n_s16(0);  // Initialize to avoid warning.
     const int16_t dd0_values[] = { di[0 * d_stride],
                                    di[1 * d_stride],
                                    di[2 * d_stride],
                                    di[3 * d_stride],
                                    di[4 * d_stride],
                                    di[5 * d_stride],
                                    0,
                                    0 };
     dd[0] = vld1q_s16(dd0_values);
     const int16_t dd1_values[] = { di[0 * d_stride + width],
                                    di[1 * d_stride + width],
                                    di[2 * d_stride + width],
                                    di[3 * d_stride + width],
                                    di[4 * d_stride + width],
                                    di[5 * d_stride + width],
                                    0,
                                    0 };
     dd[1] = vld1q_s16(dd1_values);
     const int16_t ds0_values[] = { dj[0 * d_stride],
                                    dj[1 * d_stride],
                                    dj[2 * d_stride],
                                    dj[3 * d_stride],
                                    dj[4 * d_stride],
                                    dj[5 * d_stride],
                                    0,
                                    0 };
     ds[0] = vld1q_s16(ds0_values);
     int16_t ds1_values[] = { dj[0 * d_stride + width],
                              dj[1 * d_stride + width],
                              dj[2 * d_stride + width],
                              dj[3 * d_stride + width],
                              dj[4 * d_stride + width],
                              dj[5 * d_stride + width],
                              0,
                              0 };
     ds[1] = vld1q_s16(ds1_values);

     y = 0;
     while (y < h8) {
       // 00s 10s 20s 30s 40s 50s 60s 70s  00e 10e 20e 30e 40e 50e 60e 70e
       dd[0] = vsetq_lane_s16(di[6 * d_stride], dd[0], 6);
       dd[0] = vsetq_lane_s16(di[7 * d_stride], dd[0], 7);
       dd[1] = vsetq_lane_s16(di[6 * d_stride + width], dd[1], 6);
       dd[1] = vsetq_lane_s16(di[7 * d_stride + width], dd[1], 7);

       // 00s 10s 20s 30s 40s 50s 60s 70s  00e 10e 20e 30e 40e 50e 60e 70e
       // 01s 11s 21s 31s 41s 51s 61s 71s  01e 11e 21e 31e 41e 51e 61e 71e
       ds[0] = vsetq_lane_s16(dj[6 * d_stride], ds[0], 6);
       ds[0] = vsetq_lane_s16(dj[7 * d_stride], ds[0], 7);
       ds[1] = vsetq_lane_s16(dj[6 * d_stride + width], ds[1], 6);
       ds[1] = vsetq_lane_s16(dj[7 * d_stride + width], ds[1], 7);

       load_more_16_neon(di + 8 * d_stride, width, &dd[0], &dd[2]);
       load_more_16_neon(dj + 8 * d_stride, width, &ds[0], &ds[2]);
       load_more_16_neon(di + 9 * d_stride, width, &dd[2], &dd[4]);
       load_more_16_neon(dj + 9 * d_stride, width, &ds[2], &ds[4]);
       load_more_16_neon(di + 10 * d_stride, width, &dd[4], &dd[6]);
       load_more_16_neon(dj + 10 * d_stride, width, &ds[4], &ds[6]);
       load_more_16_neon(di + 11 * d_stride, width, &dd[6], &dd[8]);
       load_more_16_neon(dj + 11 * d_stride, width, &ds[6], &ds[8]);
       load_more_16_neon(di + 12 * d_stride, width, &dd[8], &dd[10]);
       load_more_16_neon(dj + 12 * d_stride, width, &ds[8], &ds[10]);
       load_more_16_neon(di + 13 * d_stride, width, &dd[10], &dd[12]);
       load_more_16_neon(dj + 13 * d_stride, width, &ds[10], &ds[12]);

       deltas[0] = aom_sdotq_s16(deltas[0], dd[0], ds[0]);
       deltas[1] = aom_sdotq_s16(deltas[1], dd[1], ds[1]);
       deltas[2] = aom_sdotq_s16(deltas[2], dd[0], ds[2]);
       deltas[3] = aom_sdotq_s16(deltas[3], dd[1], ds[3]);
       deltas[4] = aom_sdotq_s16(deltas[4], dd[0], ds[4]);
       deltas[5] = aom_sdotq_s16(deltas[5], dd[1], ds[5]);
       deltas[6] = aom_sdotq_s16(deltas[6], dd[0], ds[6]);
       deltas[7] = aom_sdotq_s16(deltas[7], dd[1], ds[7]);
       deltas[8] = aom_sdotq_s16(deltas[8], dd[0], ds[8]);
       deltas[9] = aom_sdotq_s16(deltas[9], dd[1], ds[9]);
       deltas[10] = aom_sdotq_s16(deltas[10], dd[0], ds[10]);
       deltas[11] = aom_sdotq_s16(deltas[11], dd[1], ds[11]);
       deltas[12] = aom_sdotq_s16(deltas[12], dd[0], ds[12]);
       deltas[13] = aom_sdotq_s16(deltas[13], dd[1], ds[13]);
       deltas[14] = aom_sdotq_s16(deltas[14], dd[2], ds[0]);
       deltas[15] = aom_sdotq_s16(deltas[15], dd[3], ds[1]);
       deltas[16] = aom_sdotq_s16(deltas[16], dd[4], ds[0]);
       deltas[17] = aom_sdotq_s16(deltas[17], dd[5], ds[1]);
       deltas[18] = aom_sdotq_s16(deltas[18], dd[6], ds[0]);
       deltas[19] = aom_sdotq_s16(deltas[19], dd[7], ds[1]);
       deltas[20] = aom_sdotq_s16(deltas[20], dd[8], ds[0]);
       deltas[21] = aom_sdotq_s16(deltas[21], dd[9], ds[1]);
       deltas[22] = aom_sdotq_s16(deltas[22], dd[10], ds[0]);
       deltas[23] = aom_sdotq_s16(deltas[23], dd[11], ds[1]);
       deltas[24] = aom_sdotq_s16(deltas[24], dd[12], ds[0]);
       deltas[25] = aom_sdotq_s16(deltas[25], dd[13], ds[1]);

       dd[0] = vextq_s16(dd[12], vdupq_n_s16(0), 2);
       dd[1] = vextq_s16(dd[13], vdupq_n_s16(0), 2);
       ds[0] = vextq_s16(ds[12], vdupq_n_s16(0), 2);
       ds[1] = vextq_s16(ds[13], vdupq_n_s16(0), 2);

       di += 8 * d_stride;
       dj += 8 * d_stride;
       y += 8;
     }

     int64x2_t deltas02 = vpaddq_s64(deltas[0], deltas[2]);
     int64x2_t deltas13 = vpaddq_s64(deltas[1], deltas[3]);
     int64x2_t deltas46 = vpaddq_s64(deltas[4], deltas[6]);
     int64x2_t deltas57 = vpaddq_s64(deltas[5], deltas[7]);
     int64x2_t deltas810 = vpaddq_s64(deltas[8], deltas[10]);
     int64x2_t deltas911 = vpaddq_s64(deltas[9], deltas[11]);
     int64x2_t deltas1212 = vpaddq_s64(deltas[12], deltas[12]);
     int64x2_t deltas1313 = vpaddq_s64(deltas[13], deltas[13]);
     int64x2_t deltas1416 = vpaddq_s64(deltas[14], deltas[16]);
     int64x2_t deltas1820 = vpaddq_s64(deltas[18], deltas[20]);
     int64x2_t deltas1517 = vpaddq_s64(deltas[15], deltas[17]);
     int64x2_t deltas1921 = vpaddq_s64(deltas[19], deltas[21]);
     int64x2_t deltas2224 = vpaddq_s64(deltas[22], deltas[24]);
     int64x2_t deltas2325 = vpaddq_s64(deltas[23], deltas[25]);
     deltas02 = vsubq_s64(deltas13, deltas02);
     deltas46 = vsubq_s64(deltas57, deltas46);
     deltas810 = vsubq_s64(deltas911, deltas810);
     deltas1212 = vsubq_s64(deltas1313, deltas1212);
     deltas1416 = vsubq_s64(deltas1517, deltas1416);
     deltas1820 = vsubq_s64(deltas1921, deltas1820);
     deltas2224 = vsubq_s64(deltas2325, deltas2224);

     if (h8 != height) {
       const int16_t ds0_vals[] = {
         dj[0 * d_stride], dj[0 * d_stride + width],
         dj[1 * d_stride], dj[1 * d_stride + width],
         dj[2 * d_stride], dj[2 * d_stride + width],
         dj[3 * d_stride], dj[3 * d_stride + width]
       };
       ds[0] = vld1q_s16(ds0_vals);

       ds[1] = vsetq_lane_s16(dj[4 * d_stride], ds[1], 0);
       ds[1] = vsetq_lane_s16(dj[4 * d_stride + width], ds[1], 1);
       ds[1] = vsetq_lane_s16(dj[5 * d_stride], ds[1], 2);
       ds[1] = vsetq_lane_s16(dj[5 * d_stride + width], ds[1], 3);
       const int16_t dd4_vals[] = {
         -di[1 * d_stride], di[1 * d_stride + width],
         -di[2 * d_stride], di[2 * d_stride + width],
         -di[3 * d_stride], di[3 * d_stride + width],
         -di[4 * d_stride], di[4 * d_stride + width]
       };
       dd[4] = vld1q_s16(dd4_vals);

       dd[5] = vsetq_lane_s16(-di[5 * d_stride], dd[5], 0);
       dd[5] = vsetq_lane_s16(di[5 * d_stride + width], dd[5], 1);
       do {
         dd[0] = vdupq_n_s16(-di[0 * d_stride]);
         dd[2] = dd[3] = vdupq_n_s16(di[0 * d_stride + width]);
         dd[0] = dd[1] = vzip1q_s16(dd[0], dd[2]);

         ds[4] = vdupq_n_s16(dj[0 * d_stride]);
         ds[6] = ds[7] = vdupq_n_s16(dj[0 * d_stride + width]);
         ds[4] = ds[5] = vzip1q_s16(ds[4], ds[6]);

         dd[5] = vsetq_lane_s16(-di[6 * d_stride], dd[5], 2);
         dd[5] = vsetq_lane_s16(di[6 * d_stride + width], dd[5], 3);
         ds[1] = vsetq_lane_s16(dj[6 * d_stride], ds[1], 4);
         ds[1] = vsetq_lane_s16(dj[6 * d_stride + width], ds[1], 5);

         const int32x4_t res0 =
             vpaddq_s32(vmull_s16(vget_low_s16(dd[0]), vget_low_s16(ds[0])),
                        vmull_s16(vget_high_s16(dd[0]), vget_high_s16(ds[0])));
         deltas02 = vaddw_s32(deltas02, vget_low_s32(res0));
         deltas46 = vaddw_s32(deltas46, vget_high_s32(res0));
         const int32x4_t res1 =
             vpaddq_s32(vmull_s16(vget_low_s16(dd[1]), vget_low_s16(ds[1])),
                        vmull_s16(vget_high_s16(dd[1]), vget_high_s16(ds[1])));
         deltas810 = vaddw_s32(deltas810, vget_low_s32(res1));
         deltas1212 = vaddw_s32(deltas1212, vget_high_s32(res1));
         const int32x4_t res2 =
             vpaddq_s32(vmull_s16(vget_low_s16(dd[4]), vget_low_s16(ds[4])),
                        vmull_s16(vget_high_s16(dd[4]), vget_high_s16(ds[4])));
         deltas1416 = vaddw_s32(deltas1416, vget_low_s32(res2));
         deltas1820 = vaddw_s32(deltas1820, vget_high_s32(res2));
         const int32x4_t res3 =
             vpaddq_s32(vmull_s16(vget_low_s16(dd[5]), vget_low_s16(ds[5])),
                        vmull_s16(vget_high_s16(dd[5]), vget_high_s16(ds[5])));
         deltas2224 = vaddw_s32(deltas2224, vget_low_s32(res3));

         int32_t tmp0 = vgetq_lane_s32(vreinterpretq_s32_s16(ds[0]), 0);
         ds[0] = vextq_s16(ds[0], ds[1], 2);
         ds[1] = vextq_s16(ds[1], ds[0], 2);
         ds[1] = vreinterpretq_s16_s32(
             vsetq_lane_s32(tmp0, vreinterpretq_s32_s16(ds[1]), 3));
         int32_t tmp1 = vgetq_lane_s32(vreinterpretq_s32_s16(dd[4]), 0);
         dd[4] = vextq_s16(dd[4], dd[5], 2);
         dd[5] = vextq_s16(dd[5], dd[4], 2);
         dd[5] = vreinterpretq_s16_s32(
             vsetq_lane_s32(tmp1, vreinterpretq_s32_s16(dd[5]), 3));
         di += d_stride;
         dj += d_stride;
       } while (++y < height);
     }

     // Writing one more element on the top edge of a square falls to
     // the next square in the same row or the first element in the next
     // row, which will just be overwritten later.
     int64x2_t s0 = vld1q_s64(H + (i - 1) * wiener_win * wiener_win2 +
                              (j - 1) * wiener_win + 0);
     int64x2_t s1 = vld1q_s64(H + (i - 1) * wiener_win * wiener_win2 +
                              (j - 1) * wiener_win + 2);
     int64x2_t s2 = vld1q_s64(H + (i - 1) * wiener_win * wiener_win2 +
                              (j - 1) * wiener_win + 4);
     int64x2_t s3 = vld1q_s64(H + (i - 1) * wiener_win * wiener_win2 +
                              (j - 1) * wiener_win + 6);

     vst1q_s64(H + i * wiener_win * wiener_win2 + j * wiener_win + 0,
               vaddq_s64(s0, deltas02));
     vst1q_s64(H + i * wiener_win * wiener_win2 + j * wiener_win + 2,
               vaddq_s64(s1, deltas46));
     vst1q_s64(H + i * wiener_win * wiener_win2 + j * wiener_win + 4,
               vaddq_s64(s2, deltas810));
     vst1q_s64(H + i * wiener_win * wiener_win2 + j * wiener_win + 6,
               vaddq_s64(s3, deltas1212));

     H[(i * wiener_win + 1) * wiener_win2 + j * wiener_win] =
         H[((i - 1) * wiener_win + 1) * wiener_win2 + (j - 1) * wiener_win] +
         vgetq_lane_s64(deltas1416, 0);
     H[(i * wiener_win + 2) * wiener_win2 + j * wiener_win] =
         H[((i - 1) * wiener_win + 2) * wiener_win2 + (j - 1) * wiener_win] +
         vgetq_lane_s64(deltas1416, 1);
     H[(i * wiener_win + 3) * wiener_win2 + j * wiener_win] =
         H[((i - 1) * wiener_win + 3) * wiener_win2 + (j - 1) * wiener_win] +
         vgetq_lane_s64(deltas1820, 0);
     H[(i * wiener_win + 4) * wiener_win2 + j * wiener_win] =
         H[((i - 1) * wiener_win + 4) * wiener_win2 + (j - 1) * wiener_win] +
         vgetq_lane_s64(deltas1820, 1);
     H[(i * wiener_win + 5) * wiener_win2 + j * wiener_win] =
         H[((i - 1) * wiener_win + 5) * wiener_win2 + (j - 1) * wiener_win] +
         vgetq_lane_s64(deltas2224, 0);
     H[(i * wiener_win + 6) * wiener_win2 + j * wiener_win] =
         H[((i - 1) * wiener_win + 6) * wiener_win2 + (j - 1) * wiener_win] +
         vgetq_lane_s64(deltas2224, 1);
   } while (++j < wiener_win);
 } while (++i < wiener_win - 1);

 // Step 5: Derive other points of each square. No square in bottom row.
 i = 0;
 do {
   const int16_t *const di = d + i;

   j = i + 1;
   do {
     const int16_t *const dj = d + j;
     int64x2_t deltas[WIENER_WIN - 1][WIN_7] = { { vdupq_n_s64(0) },
                                                 { vdupq_n_s64(0) } };
     int16x8_t d_is[WIN_7];
     int16x8_t d_ie[WIN_7];
     int16x8_t d_js[WIN_7];
     int16x8_t d_je[WIN_7];

     x = 0;
     while (x < width - 16) {
       load_square_win7_neon(di + x, dj + x, d_stride, height, d_is, d_ie,
                             d_js, d_je);
       derive_square_win7_sve(d_is, d_ie, d_js, d_je, deltas);
       x += 16;
     }

     load_square_win7_sve(di + x, dj + x, d_stride, height, d_is, d_ie, d_js,
                          d_je, p0, p1);
     derive_square_win7_sve(d_is, d_ie, d_js, d_je, deltas);

     hadd_update_6_stats_sve(
         H + (i * wiener_win + 0) * wiener_win2 + j * wiener_win, deltas[0],
         H + (i * wiener_win + 1) * wiener_win2 + j * wiener_win + 1);
     hadd_update_6_stats_sve(
         H + (i * wiener_win + 1) * wiener_win2 + j * wiener_win, deltas[1],
         H + (i * wiener_win + 2) * wiener_win2 + j * wiener_win + 1);
     hadd_update_6_stats_sve(
         H + (i * wiener_win + 2) * wiener_win2 + j * wiener_win, deltas[2],
         H + (i * wiener_win + 3) * wiener_win2 + j * wiener_win + 1);
     hadd_update_6_stats_sve(
         H + (i * wiener_win + 3) * wiener_win2 + j * wiener_win, deltas[3],
         H + (i * wiener_win + 4) * wiener_win2 + j * wiener_win + 1);
     hadd_update_6_stats_sve(
         H + (i * wiener_win + 4) * wiener_win2 + j * wiener_win, deltas[4],
         H + (i * wiener_win + 5) * wiener_win2 + j * wiener_win + 1);
     hadd_update_6_stats_sve(
         H + (i * wiener_win + 5) * wiener_win2 + j * wiener_win, deltas[5],
         H + (i * wiener_win + 6) * wiener_win2 + j * wiener_win + 1);
   } while (++j < wiener_win);
 } while (++i < wiener_win - 1);

 // Step 6: Derive other points of each upper triangle along the diagonal.
 i = 0;
 do {
   const int16_t *const di = d + i;
   int64x2_t deltas[3 * WIENER_WIN] = { vdupq_n_s64(0) };
   int16x8_t d_is[WIN_7], d_ie[WIN_7];

   x = 0;
   while (x < width - 16) {
     load_triangle_win7_neon(di + x, d_stride, height, d_is, d_ie);
     derive_triangle_win7_sve(d_is, d_ie, deltas);
     x += 16;
   }

   load_triangle_win7_sve(di + x, d_stride, height, d_is, d_ie, p0, p1);
   derive_triangle_win7_sve(d_is, d_ie, deltas);

   // Row 1: 6 points
   hadd_update_6_stats_sve(
       H + (i * wiener_win + 0) * wiener_win2 + i * wiener_win, deltas,
       H + (i * wiener_win + 1) * wiener_win2 + i * wiener_win + 1);

   int64x2_t deltas1017 = vpaddq_s64(deltas[10], deltas[17]);

   // Row 2: 5 points
   hadd_update_4_stats_sve(
       H + (i * wiener_win + 1) * wiener_win2 + i * wiener_win + 1, deltas + 6,
       H + (i * wiener_win + 2) * wiener_win2 + i * wiener_win + 2);
   H[(i * wiener_win + 2) * wiener_win2 + i * wiener_win + 6] =
       H[(i * wiener_win + 1) * wiener_win2 + i * wiener_win + 5] +
       vgetq_lane_s64(deltas1017, 0);

   // Row 3: 4 points
   hadd_update_4_stats_sve(
       H + (i * wiener_win + 2) * wiener_win2 + i * wiener_win + 2,
       deltas + 11,
       H + (i * wiener_win + 3) * wiener_win2 + i * wiener_win + 3);

   // Row 4: 3 points
   int64x2_t h0 =
       vld1q_s64(H + (i * wiener_win + 3) * wiener_win2 + i * wiener_win + 3);
   vst1q_s64(H + (i * wiener_win + 4) * wiener_win2 + i * wiener_win + 4,
             vaddq_s64(h0, vpaddq_s64(deltas[15], deltas[16])));
   H[(i * wiener_win + 4) * wiener_win2 + i * wiener_win + 6] =
       H[(i * wiener_win + 3) * wiener_win2 + i * wiener_win + 5] +
       vgetq_lane_s64(deltas1017, 1);

   // Row 5: 2 points
   int64x2_t h1 =
       vld1q_s64(H + (i * wiener_win + 4) * wiener_win2 + i * wiener_win + 4);
   vst1q_s64(H + (i * wiener_win + 5) * wiener_win2 + i * wiener_win + 5,
             vaddq_s64(h1, vpaddq_s64(deltas[18], deltas[19])));

   // Row 6: 1 points
   H[(i * wiener_win + 6) * wiener_win2 + i * wiener_win + 6] =
       H[(i * wiener_win + 5) * wiener_win2 + i * wiener_win + 5] +
       vaddvq_s64(deltas[20]);
 } while (++i < wiener_win);
}

#endif  // AOM_AV1_ENCODER_ARM_PICKRST_SVE_H_