Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

1 files changed, 1948 insertions, 0 deletions

diff --git a/third_party/aom/aom_dsp/x86/masked_variance_intrin_ssse3.c b/third_party/aom/aom_dsp/x86/masked_variance_intrin_ssse3.c
new file mode 100644
index 000000000..fe14597f6
--- /dev/null
+++ b/third_party/aom/aom_dsp/x86/masked_variance_intrin_ssse3.c
@@ -0,0 +1,1948 @@
+/*
+ * Copyright (c) 2016, 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 <assert.h>
+#include <stdlib.h>
+#include <emmintrin.h>
+#include <tmmintrin.h>
+
+#include "./aom_config.h"
+#include "aom/aom_integer.h"
+#include "aom_ports/mem.h"
+#include "aom_dsp/aom_filter.h"
+
+// Half pixel shift
+#define HALF_PIXEL_OFFSET (BIL_SUBPEL_SHIFTS / 2)
+
+/*****************************************************************************
+ * Horizontal additions
+ *****************************************************************************/
+
+static INLINE int32_t hsum_epi32_si32(__m128i v_d) {
+  v_d = _mm_hadd_epi32(v_d, v_d);
+  v_d = _mm_hadd_epi32(v_d, v_d);
+  return _mm_cvtsi128_si32(v_d);
+}
+
+static INLINE int64_t hsum_epi64_si64(__m128i v_q) {
+  v_q = _mm_add_epi64(v_q, _mm_srli_si128(v_q, 8));
+#if ARCH_X86_64
+  return _mm_cvtsi128_si64(v_q);
+#else
+  {
+    int64_t tmp;
+    _mm_storel_epi64((__m128i *)&tmp, v_q);
+    return tmp;
+  }
+#endif
+}
+
+#if CONFIG_HIGHBITDEPTH
+static INLINE int64_t hsum_epi32_si64(__m128i v_d) {
+  const __m128i v_sign_d = _mm_cmplt_epi32(v_d, _mm_setzero_si128());
+  const __m128i v_0_q = _mm_unpacklo_epi32(v_d, v_sign_d);
+  const __m128i v_1_q = _mm_unpackhi_epi32(v_d, v_sign_d);
+  return hsum_epi64_si64(_mm_add_epi64(v_0_q, v_1_q));
+}
+#endif  // CONFIG_HIGHBITDEPTH
+
+static INLINE uint32_t calc_masked_variance(__m128i v_sum_d, __m128i v_sse_q,
+                                            uint32_t *sse, int w, int h) {
+  int64_t sum64;
+  uint64_t sse64;
+
+  // Horizontal sum
+  sum64 = hsum_epi32_si32(v_sum_d);
+  sse64 = hsum_epi64_si64(v_sse_q);
+
+  sum64 = (sum64 >= 0) ? sum64 : -sum64;
+
+  // Round
+  sum64 = ROUND_POWER_OF_TWO(sum64, 6);
+  sse64 = ROUND_POWER_OF_TWO(sse64, 12);
+
+  // Store the SSE
+  *sse = (uint32_t)sse64;
+  // Compute the variance
+  return *sse - (uint32_t)((sum64 * sum64) / (w * h));
+}
+
+/*****************************************************************************
+ * n*16 Wide versions
+ *****************************************************************************/
+
+static INLINE unsigned int masked_variancewxh_ssse3(
+    const uint8_t *a, int a_stride, const uint8_t *b, int b_stride,
+    const uint8_t *m, int m_stride, int w, int h, unsigned int *sse) {
+  int ii, jj;
+
+  const __m128i v_zero = _mm_setzero_si128();
+
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+
+  assert((w % 16) == 0);
+
+  for (ii = 0; ii < h; ii++) {
+    for (jj = 0; jj < w; jj += 16) {
+      // Load inputs - 8 bits
+      const __m128i v_a_b = _mm_loadu_si128((const __m128i *)(a + jj));
+      const __m128i v_b_b = _mm_loadu_si128((const __m128i *)(b + jj));
+      const __m128i v_m_b = _mm_loadu_si128((const __m128i *)(m + jj));
+
+      // Unpack to 16 bits - still containing max 8 bits
+      const __m128i v_a0_w = _mm_unpacklo_epi8(v_a_b, v_zero);
+      const __m128i v_b0_w = _mm_unpacklo_epi8(v_b_b, v_zero);
+      const __m128i v_m0_w = _mm_unpacklo_epi8(v_m_b, v_zero);
+      const __m128i v_a1_w = _mm_unpackhi_epi8(v_a_b, v_zero);
+      const __m128i v_b1_w = _mm_unpackhi_epi8(v_b_b, v_zero);
+      const __m128i v_m1_w = _mm_unpackhi_epi8(v_m_b, v_zero);
+
+      // Difference: [-255, 255]
+      const __m128i v_d0_w = _mm_sub_epi16(v_a0_w, v_b0_w);
+      const __m128i v_d1_w = _mm_sub_epi16(v_a1_w, v_b1_w);
+
+      // Error - [-255, 255] * [0, 64] = [0xc040, 0x3fc0] => fits in 15 bits
+      const __m128i v_e0_w = _mm_mullo_epi16(v_d0_w, v_m0_w);
+      const __m128i v_e0_d = _mm_madd_epi16(v_d0_w, v_m0_w);
+      const __m128i v_e1_w = _mm_mullo_epi16(v_d1_w, v_m1_w);
+      const __m128i v_e1_d = _mm_madd_epi16(v_d1_w, v_m1_w);
+
+      // Squared error - using madd it's max (15 bits * 15 bits) * 2 = 31 bits
+      const __m128i v_se0_d = _mm_madd_epi16(v_e0_w, v_e0_w);
+      const __m128i v_se1_d = _mm_madd_epi16(v_e1_w, v_e1_w);
+
+      // Sum of v_se{0,1}_d - 31 bits + 31 bits = 32 bits
+      const __m128i v_se_d = _mm_add_epi32(v_se0_d, v_se1_d);
+
+      // Unpack Squared error to 64 bits
+      const __m128i v_se_lo_q = _mm_unpacklo_epi32(v_se_d, v_zero);
+      const __m128i v_se_hi_q = _mm_unpackhi_epi32(v_se_d, v_zero);
+
+      // Accumulate
+      v_sum_d = _mm_add_epi32(v_sum_d, v_e0_d);
+      v_sum_d = _mm_add_epi32(v_sum_d, v_e1_d);
+      v_sse_q = _mm_add_epi64(v_sse_q, v_se_lo_q);
+      v_sse_q = _mm_add_epi64(v_sse_q, v_se_hi_q);
+    }
+
+    // Move on to next row
+    a += a_stride;
+    b += b_stride;
+    m += m_stride;
+  }
+
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, w, h);
+}
+
+#define MASKED_VARWXH(W, H)                                                   \
+  unsigned int aom_masked_variance##W##x##H##_ssse3(                          \
+      const uint8_t *a, int a_stride, const uint8_t *b, int b_stride,         \
+      const uint8_t *m, int m_stride, unsigned int *sse) {                    \
+    return masked_variancewxh_ssse3(a, a_stride, b, b_stride, m, m_stride, W, \
+                                    H, sse);                                  \
+  }
+
+MASKED_VARWXH(16, 8)
+MASKED_VARWXH(16, 16)
+MASKED_VARWXH(16, 32)
+MASKED_VARWXH(32, 16)
+MASKED_VARWXH(32, 32)
+MASKED_VARWXH(32, 64)
+MASKED_VARWXH(64, 32)
+MASKED_VARWXH(64, 64)
+#if CONFIG_EXT_PARTITION
+MASKED_VARWXH(64, 128)
+MASKED_VARWXH(128, 64)
+MASKED_VARWXH(128, 128)
+#endif  // CONFIG_EXT_PARTITION
+
+/*****************************************************************************
+ * 8 Wide versions
+ *****************************************************************************/
+
+static INLINE unsigned int masked_variance8xh_ssse3(
+    const uint8_t *a, int a_stride, const uint8_t *b, int b_stride,
+    const uint8_t *m, int m_stride, int h, unsigned int *sse) {
+  int ii;
+
+  const __m128i v_zero = _mm_setzero_si128();
+
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+
+  for (ii = 0; ii < h; ii++) {
+    // Load inputs - 8 bits
+    const __m128i v_a_b = _mm_loadl_epi64((const __m128i *)a);
+    const __m128i v_b_b = _mm_loadl_epi64((const __m128i *)b);
+    const __m128i v_m_b = _mm_loadl_epi64((const __m128i *)m);
+
+    // Unpack to 16 bits - still containing max 8 bits
+    const __m128i v_a_w = _mm_unpacklo_epi8(v_a_b, v_zero);
+    const __m128i v_b_w = _mm_unpacklo_epi8(v_b_b, v_zero);
+    const __m128i v_m_w = _mm_unpacklo_epi8(v_m_b, v_zero);
+
+    // Difference: [-255, 255]
+    const __m128i v_d_w = _mm_sub_epi16(v_a_w, v_b_w);
+
+    // Error - [-255, 255] * [0, 64] = [0xc040, 0x3fc0] => fits in 15 bits
+    const __m128i v_e_w = _mm_mullo_epi16(v_d_w, v_m_w);
+    const __m128i v_e_d = _mm_madd_epi16(v_d_w, v_m_w);
+
+    // Squared error - using madd it's max (15 bits * 15 bits) * 2 = 31 bits
+    const __m128i v_se_d = _mm_madd_epi16(v_e_w, v_e_w);
+
+    // Unpack Squared error to 64 bits
+    const __m128i v_se_lo_q = _mm_unpacklo_epi32(v_se_d, v_zero);
+    const __m128i v_se_hi_q = _mm_unpackhi_epi32(v_se_d, v_zero);
+
+    // Accumulate
+    v_sum_d = _mm_add_epi32(v_sum_d, v_e_d);
+    v_sse_q = _mm_add_epi64(v_sse_q, v_se_lo_q);
+    v_sse_q = _mm_add_epi64(v_sse_q, v_se_hi_q);
+
+    // Move on to next row
+    a += a_stride;
+    b += b_stride;
+    m += m_stride;
+  }
+
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, 8, h);
+}
+
+#define MASKED_VAR8XH(H)                                                      \
+  unsigned int aom_masked_variance8x##H##_ssse3(                              \
+      const uint8_t *a, int a_stride, const uint8_t *b, int b_stride,         \
+      const uint8_t *m, int m_stride, unsigned int *sse) {                    \
+    return masked_variance8xh_ssse3(a, a_stride, b, b_stride, m, m_stride, H, \
+                                    sse);                                     \
+  }
+
+MASKED_VAR8XH(4)
+MASKED_VAR8XH(8)
+MASKED_VAR8XH(16)
+
+/*****************************************************************************
+ * 4 Wide versions
+ *****************************************************************************/
+
+static INLINE unsigned int masked_variance4xh_ssse3(
+    const uint8_t *a, int a_stride, const uint8_t *b, int b_stride,
+    const uint8_t *m, int m_stride, int h, unsigned int *sse) {
+  int ii;
+
+  const __m128i v_zero = _mm_setzero_si128();
+
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+
+  assert((h % 2) == 0);
+
+  for (ii = 0; ii < h / 2; ii++) {
+    // Load 2 input rows - 8 bits
+    const __m128i v_a0_b = _mm_cvtsi32_si128(*(const uint32_t *)a);
+    const __m128i v_b0_b = _mm_cvtsi32_si128(*(const uint32_t *)b);
+    const __m128i v_m0_b = _mm_cvtsi32_si128(*(const uint32_t *)m);
+    const __m128i v_a1_b = _mm_cvtsi32_si128(*(const uint32_t *)(a + a_stride));
+    const __m128i v_b1_b = _mm_cvtsi32_si128(*(const uint32_t *)(b + b_stride));
+    const __m128i v_m1_b = _mm_cvtsi32_si128(*(const uint32_t *)(m + m_stride));
+
+    // Interleave 2 rows into a single register
+    const __m128i v_a_b = _mm_unpacklo_epi32(v_a0_b, v_a1_b);
+    const __m128i v_b_b = _mm_unpacklo_epi32(v_b0_b, v_b1_b);
+    const __m128i v_m_b = _mm_unpacklo_epi32(v_m0_b, v_m1_b);
+
+    // Unpack to 16 bits - still containing max 8 bits
+    const __m128i v_a_w = _mm_unpacklo_epi8(v_a_b, v_zero);
+    const __m128i v_b_w = _mm_unpacklo_epi8(v_b_b, v_zero);
+    const __m128i v_m_w = _mm_unpacklo_epi8(v_m_b, v_zero);
+
+    // Difference: [-255, 255]
+    const __m128i v_d_w = _mm_sub_epi16(v_a_w, v_b_w);
+
+    // Error - [-255, 255] * [0, 64] = [0xc040, 0x3fc0] => fits in 15 bits
+    const __m128i v_e_w = _mm_mullo_epi16(v_d_w, v_m_w);
+    const __m128i v_e_d = _mm_madd_epi16(v_d_w, v_m_w);
+
+    // Squared error - using madd it's max (15 bits * 15 bits) * 2 = 31 bits
+    const __m128i v_se_d = _mm_madd_epi16(v_e_w, v_e_w);
+
+    // Unpack Squared error to 64 bits
+    const __m128i v_se_lo_q = _mm_unpacklo_epi32(v_se_d, v_zero);
+    const __m128i v_se_hi_q = _mm_unpackhi_epi32(v_se_d, v_zero);
+
+    // Accumulate
+    v_sum_d = _mm_add_epi32(v_sum_d, v_e_d);
+    v_sse_q = _mm_add_epi64(v_sse_q, v_se_lo_q);
+    v_sse_q = _mm_add_epi64(v_sse_q, v_se_hi_q);
+
+    // Move on to next 2 row
+    a += a_stride * 2;
+    b += b_stride * 2;
+    m += m_stride * 2;
+  }
+
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, 4, h);
+}
+
+#define MASKED_VAR4XH(H)                                                      \
+  unsigned int aom_masked_variance4x##H##_ssse3(                              \
+      const uint8_t *a, int a_stride, const uint8_t *b, int b_stride,         \
+      const uint8_t *m, int m_stride, unsigned int *sse) {                    \
+    return masked_variance4xh_ssse3(a, a_stride, b, b_stride, m, m_stride, H, \
+                                    sse);                                     \
+  }
+
+MASKED_VAR4XH(4)
+MASKED_VAR4XH(8)
+
+#if CONFIG_HIGHBITDEPTH
+
+// Main calculation for n*8 wide blocks
+static INLINE void highbd_masked_variance64_ssse3(
+    const uint16_t *a, int a_stride, const uint16_t *b, int b_stride,
+    const uint8_t *m, int m_stride, int w, int h, int64_t *sum, uint64_t *sse) {
+  int ii, jj;
+
+  const __m128i v_zero = _mm_setzero_si128();
+
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+
+  assert((w % 8) == 0);
+
+  for (ii = 0; ii < h; ii++) {
+    for (jj = 0; jj < w; jj += 8) {
+      // Load inputs - 8 bits
+      const __m128i v_a_w = _mm_loadu_si128((const __m128i *)(a + jj));
+      const __m128i v_b_w = _mm_loadu_si128((const __m128i *)(b + jj));
+      const __m128i v_m_b = _mm_loadl_epi64((const __m128i *)(m + jj));
+
+      // Unpack m to 16 bits - still containing max 8 bits
+      const __m128i v_m_w = _mm_unpacklo_epi8(v_m_b, v_zero);
+
+      // Difference: [-4095, 4095]
+      const __m128i v_d_w = _mm_sub_epi16(v_a_w, v_b_w);
+
+      // Error - [-4095, 4095] * [0, 64] => sum of 2 of these fits in 19 bits
+      const __m128i v_e_d = _mm_madd_epi16(v_d_w, v_m_w);
+
+      // Squared error - max (18 bits * 18 bits) = 36 bits (no sign bit)
+      const __m128i v_absd_w = _mm_abs_epi16(v_d_w);
+      const __m128i v_dlo_d = _mm_unpacklo_epi16(v_absd_w, v_zero);
+      const __m128i v_mlo_d = _mm_unpacklo_epi16(v_m_w, v_zero);
+      const __m128i v_elo_d = _mm_madd_epi16(v_dlo_d, v_mlo_d);
+      const __m128i v_dhi_d = _mm_unpackhi_epi16(v_absd_w, v_zero);
+      const __m128i v_mhi_d = _mm_unpackhi_epi16(v_m_w, v_zero);
+      const __m128i v_ehi_d = _mm_madd_epi16(v_dhi_d, v_mhi_d);
+      // Square and sum the errors -> 36bits * 4 = 38bits
+      __m128i v_se0_q, v_se1_q, v_se2_q, v_se3_q, v_se_q, v_elo1_d, v_ehi3_d;
+      v_se0_q = _mm_mul_epu32(v_elo_d, v_elo_d);
+      v_elo1_d = _mm_srli_si128(v_elo_d, 4);
+      v_se1_q = _mm_mul_epu32(v_elo1_d, v_elo1_d);
+      v_se0_q = _mm_add_epi64(v_se0_q, v_se1_q);
+      v_se2_q = _mm_mul_epu32(v_ehi_d, v_ehi_d);
+      v_ehi3_d = _mm_srli_si128(v_ehi_d, 4);
+      v_se3_q = _mm_mul_epu32(v_ehi3_d, v_ehi3_d);
+      v_se1_q = _mm_add_epi64(v_se2_q, v_se3_q);
+      v_se_q = _mm_add_epi64(v_se0_q, v_se1_q);
+
+      // Accumulate
+      v_sum_d = _mm_add_epi32(v_sum_d, v_e_d);
+      v_sse_q = _mm_add_epi64(v_sse_q, v_se_q);
+    }
+
+    // Move on to next row
+    a += a_stride;
+    b += b_stride;
+    m += m_stride;
+  }
+
+  // Horizontal sum
+  *sum = hsum_epi32_si64(v_sum_d);
+  *sse = hsum_epi64_si64(v_sse_q);
+
+  // Round
+  *sum = (*sum >= 0) ? *sum : -*sum;
+  *sum = ROUND_POWER_OF_TWO(*sum, 6);
+  *sse = ROUND_POWER_OF_TWO(*sse, 12);
+}
+
+// Main calculation for 4 wide blocks
+static INLINE void highbd_masked_variance64_4wide_ssse3(
+    const uint16_t *a, int a_stride, const uint16_t *b, int b_stride,
+    const uint8_t *m, int m_stride, int h, int64_t *sum, uint64_t *sse) {
+  int ii;
+
+  const __m128i v_zero = _mm_setzero_si128();
+
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+
+  assert((h % 2) == 0);
+
+  for (ii = 0; ii < h / 2; ii++) {
+    // Load 2 input rows - 8 bits
+    const __m128i v_a0_w = _mm_loadl_epi64((const __m128i *)a);
+    const __m128i v_b0_w = _mm_loadl_epi64((const __m128i *)b);
+    const __m128i v_m0_b = _mm_cvtsi32_si128(*(const uint32_t *)m);
+    const __m128i v_a1_w = _mm_loadl_epi64((const __m128i *)(a + a_stride));
+    const __m128i v_b1_w = _mm_loadl_epi64((const __m128i *)(b + b_stride));
+    const __m128i v_m1_b = _mm_cvtsi32_si128(*(const uint32_t *)(m + m_stride));
+
+    // Interleave 2 rows into a single register
+    const __m128i v_a_w = _mm_unpacklo_epi64(v_a0_w, v_a1_w);
+    const __m128i v_b_w = _mm_unpacklo_epi64(v_b0_w, v_b1_w);
+    const __m128i v_m_b = _mm_unpacklo_epi32(v_m0_b, v_m1_b);
+
+    // Unpack to 16 bits - still containing max 8 bits
+    const __m128i v_m_w = _mm_unpacklo_epi8(v_m_b, v_zero);
+
+    // Difference: [-4095, 4095]
+    const __m128i v_d_w = _mm_sub_epi16(v_a_w, v_b_w);
+
+    // Error - [-4095, 4095] * [0, 64] => fits in 19 bits (incld sign bit)
+    const __m128i v_e_d = _mm_madd_epi16(v_d_w, v_m_w);
+
+    // Squared error - max (18 bits * 18 bits) = 36 bits (no sign bit)
+    const __m128i v_absd_w = _mm_abs_epi16(v_d_w);
+    const __m128i v_dlo_d = _mm_unpacklo_epi16(v_absd_w, v_zero);
+    const __m128i v_mlo_d = _mm_unpacklo_epi16(v_m_w, v_zero);
+    const __m128i v_elo_d = _mm_madd_epi16(v_dlo_d, v_mlo_d);
+    const __m128i v_dhi_d = _mm_unpackhi_epi16(v_absd_w, v_zero);
+    const __m128i v_mhi_d = _mm_unpackhi_epi16(v_m_w, v_zero);
+    const __m128i v_ehi_d = _mm_madd_epi16(v_dhi_d, v_mhi_d);
+    // Square and sum the errors -> 36bits * 4 = 38bits
+    __m128i v_se0_q, v_se1_q, v_se2_q, v_se3_q, v_se_q, v_elo1_d, v_ehi3_d;
+    v_se0_q = _mm_mul_epu32(v_elo_d, v_elo_d);
+    v_elo1_d = _mm_srli_si128(v_elo_d, 4);
+    v_se1_q = _mm_mul_epu32(v_elo1_d, v_elo1_d);
+    v_se0_q = _mm_add_epi64(v_se0_q, v_se1_q);
+    v_se2_q = _mm_mul_epu32(v_ehi_d, v_ehi_d);
+    v_ehi3_d = _mm_srli_si128(v_ehi_d, 4);
+    v_se3_q = _mm_mul_epu32(v_ehi3_d, v_ehi3_d);
+    v_se1_q = _mm_add_epi64(v_se2_q, v_se3_q);
+    v_se_q = _mm_add_epi64(v_se0_q, v_se1_q);
+
+    // Accumulate
+    v_sum_d = _mm_add_epi32(v_sum_d, v_e_d);
+    v_sse_q = _mm_add_epi64(v_sse_q, v_se_q);
+
+    // Move on to next row
+    a += a_stride * 2;
+    b += b_stride * 2;
+    m += m_stride * 2;
+  }
+
+  // Horizontal sum
+  *sum = hsum_epi32_si32(v_sum_d);
+  *sse = hsum_epi64_si64(v_sse_q);
+
+  // Round
+  *sum = (*sum >= 0) ? *sum : -*sum;
+  *sum = ROUND_POWER_OF_TWO(*sum, 6);
+  *sse = ROUND_POWER_OF_TWO(*sse, 12);
+}
+
+static INLINE unsigned int highbd_masked_variancewxh_ssse3(
+    const uint16_t *a, int a_stride, const uint16_t *b, int b_stride,
+    const uint8_t *m, int m_stride, int w, int h, unsigned int *sse) {
+  uint64_t sse64;
+  int64_t sum64;
+
+  if (w == 4)
+    highbd_masked_variance64_4wide_ssse3(a, a_stride, b, b_stride, m, m_stride,
+                                         h, &sum64, &sse64);
+  else
+    highbd_masked_variance64_ssse3(a, a_stride, b, b_stride, m, m_stride, w, h,
+                                   &sum64, &sse64);
+
+  // Store the SSE
+  *sse = (uint32_t)sse64;
+  // Compute and return variance
+  return *sse - (uint32_t)((sum64 * sum64) / (w * h));
+}
+
+static INLINE unsigned int highbd_10_masked_variancewxh_ssse3(
+    const uint16_t *a, int a_stride, const uint16_t *b, int b_stride,
+    const uint8_t *m, int m_stride, int w, int h, unsigned int *sse) {
+  uint64_t sse64;
+  int64_t sum64;
+
+  if (w == 4)
+    highbd_masked_variance64_4wide_ssse3(a, a_stride, b, b_stride, m, m_stride,
+                                         h, &sum64, &sse64);
+  else
+    highbd_masked_variance64_ssse3(a, a_stride, b, b_stride, m, m_stride, w, h,
+                                   &sum64, &sse64);
+
+  // Normalise
+  sum64 = ROUND_POWER_OF_TWO(sum64, 2);
+  sse64 = ROUND_POWER_OF_TWO(sse64, 4);
+
+  // Store the SSE
+  *sse = (uint32_t)sse64;
+  // Compute and return variance
+  return *sse - (uint32_t)((sum64 * sum64) / (w * h));
+}
+
+static INLINE unsigned int highbd_12_masked_variancewxh_ssse3(
+    const uint16_t *a, int a_stride, const uint16_t *b, int b_stride,
+    const uint8_t *m, int m_stride, int w, int h, unsigned int *sse) {
+  uint64_t sse64;
+  int64_t sum64;
+
+  if (w == 4)
+    highbd_masked_variance64_4wide_ssse3(a, a_stride, b, b_stride, m, m_stride,
+                                         h, &sum64, &sse64);
+  else
+    highbd_masked_variance64_ssse3(a, a_stride, b, b_stride, m, m_stride, w, h,
+                                   &sum64, &sse64);
+
+  sum64 = ROUND_POWER_OF_TWO(sum64, 4);
+  sse64 = ROUND_POWER_OF_TWO(sse64, 8);
+
+  // Store the SSE
+  *sse = (uint32_t)sse64;
+  // Compute and return variance
+  return *sse - (uint32_t)((sum64 * sum64) / (w * h));
+}
+
+#define HIGHBD_MASKED_VARWXH(W, H)                                         \
+  unsigned int aom_highbd_masked_variance##W##x##H##_ssse3(                \
+      const uint8_t *a8, int a_stride, const uint8_t *b8, int b_stride,    \
+      const uint8_t *m, int m_stride, unsigned int *sse) {                 \
+    uint16_t *a = CONVERT_TO_SHORTPTR(a8);                                 \
+    uint16_t *b = CONVERT_TO_SHORTPTR(b8);                                 \
+    return highbd_masked_variancewxh_ssse3(a, a_stride, b, b_stride, m,    \
+                                           m_stride, W, H, sse);           \
+  }                                                                        \
+                                                                           \
+  unsigned int aom_highbd_10_masked_variance##W##x##H##_ssse3(             \
+      const uint8_t *a8, int a_stride, const uint8_t *b8, int b_stride,    \
+      const uint8_t *m, int m_stride, unsigned int *sse) {                 \
+    uint16_t *a = CONVERT_TO_SHORTPTR(a8);                                 \
+    uint16_t *b = CONVERT_TO_SHORTPTR(b8);                                 \
+    return highbd_10_masked_variancewxh_ssse3(a, a_stride, b, b_stride, m, \
+                                              m_stride, W, H, sse);        \
+  }                                                                        \
+                                                                           \
+  unsigned int aom_highbd_12_masked_variance##W##x##H##_ssse3(             \
+      const uint8_t *a8, int a_stride, const uint8_t *b8, int b_stride,    \
+      const uint8_t *m, int m_stride, unsigned int *sse) {                 \
+    uint16_t *a = CONVERT_TO_SHORTPTR(a8);                                 \
+    uint16_t *b = CONVERT_TO_SHORTPTR(b8);                                 \
+    return highbd_12_masked_variancewxh_ssse3(a, a_stride, b, b_stride, m, \
+                                              m_stride, W, H, sse);        \
+  }
+
+HIGHBD_MASKED_VARWXH(4, 4)
+HIGHBD_MASKED_VARWXH(4, 8)
+HIGHBD_MASKED_VARWXH(8, 4)
+HIGHBD_MASKED_VARWXH(8, 8)
+HIGHBD_MASKED_VARWXH(8, 16)
+HIGHBD_MASKED_VARWXH(16, 8)
+HIGHBD_MASKED_VARWXH(16, 16)
+HIGHBD_MASKED_VARWXH(16, 32)
+HIGHBD_MASKED_VARWXH(32, 16)
+HIGHBD_MASKED_VARWXH(32, 32)
+HIGHBD_MASKED_VARWXH(32, 64)
+HIGHBD_MASKED_VARWXH(64, 32)
+HIGHBD_MASKED_VARWXH(64, 64)
+#if CONFIG_EXT_PARTITION
+HIGHBD_MASKED_VARWXH(64, 128)
+HIGHBD_MASKED_VARWXH(128, 64)
+HIGHBD_MASKED_VARWXH(128, 128)
+#endif  // CONFIG_EXT_PARTITION
+
+#endif
+
+//////////////////////////////////////////////////////////////////////////////
+// Sub pixel versions
+//////////////////////////////////////////////////////////////////////////////
+
+typedef __m128i (*filter_fn_t)(__m128i v_a_b, __m128i v_b_b,
+                               __m128i v_filter_b);
+
+static INLINE __m128i apply_filter_avg(const __m128i v_a_b, const __m128i v_b_b,
+                                       const __m128i v_filter_b) {
+  (void)v_filter_b;
+  return _mm_avg_epu8(v_a_b, v_b_b);
+}
+
+static INLINE __m128i apply_filter(const __m128i v_a_b, const __m128i v_b_b,
+                                   const __m128i v_filter_b) {
+  const __m128i v_rounding_w = _mm_set1_epi16(1 << (FILTER_BITS - 1));
+  __m128i v_input_lo_b = _mm_unpacklo_epi8(v_a_b, v_b_b);
+  __m128i v_input_hi_b = _mm_unpackhi_epi8(v_a_b, v_b_b);
+  __m128i v_temp0_w = _mm_maddubs_epi16(v_input_lo_b, v_filter_b);
+  __m128i v_temp1_w = _mm_maddubs_epi16(v_input_hi_b, v_filter_b);
+  __m128i v_res_lo_w =
+      _mm_srai_epi16(_mm_add_epi16(v_temp0_w, v_rounding_w), FILTER_BITS);
+  __m128i v_res_hi_w =
+      _mm_srai_epi16(_mm_add_epi16(v_temp1_w, v_rounding_w), FILTER_BITS);
+  return _mm_packus_epi16(v_res_lo_w, v_res_hi_w);
+}
+
+// Apply the filter to the contents of the lower half of a and b
+static INLINE void apply_filter_lo(const __m128i v_a_lo_b,
+                                   const __m128i v_b_lo_b,
+                                   const __m128i v_filter_b, __m128i *v_res_w) {
+  const __m128i v_rounding_w = _mm_set1_epi16(1 << (FILTER_BITS - 1));
+  __m128i v_input_b = _mm_unpacklo_epi8(v_a_lo_b, v_b_lo_b);
+  __m128i v_temp0_w = _mm_maddubs_epi16(v_input_b, v_filter_b);
+  *v_res_w =
+      _mm_srai_epi16(_mm_add_epi16(v_temp0_w, v_rounding_w), FILTER_BITS);
+}
+
+static void sum_and_sse(const __m128i v_a_b, const __m128i v_b_b,
+                        const __m128i v_m_b, __m128i *v_sum_d,
+                        __m128i *v_sse_q) {
+  const __m128i v_zero = _mm_setzero_si128();
+  // Unpack to 16 bits - still containing max 8 bits
+  const __m128i v_a0_w = _mm_unpacklo_epi8(v_a_b, v_zero);
+  const __m128i v_b0_w = _mm_unpacklo_epi8(v_b_b, v_zero);
+  const __m128i v_m0_w = _mm_unpacklo_epi8(v_m_b, v_zero);
+  const __m128i v_a1_w = _mm_unpackhi_epi8(v_a_b, v_zero);
+  const __m128i v_b1_w = _mm_unpackhi_epi8(v_b_b, v_zero);
+  const __m128i v_m1_w = _mm_unpackhi_epi8(v_m_b, v_zero);
+
+  // Difference: [-255, 255]
+  const __m128i v_d0_w = _mm_sub_epi16(v_a0_w, v_b0_w);
+  const __m128i v_d1_w = _mm_sub_epi16(v_a1_w, v_b1_w);
+
+  // Error - [-255, 255] * [0, 64] = [0xc040, 0x3fc0] => fits in 15 bits
+  const __m128i v_e0_w = _mm_mullo_epi16(v_d0_w, v_m0_w);
+  const __m128i v_e0_d = _mm_madd_epi16(v_d0_w, v_m0_w);
+  const __m128i v_e1_w = _mm_mullo_epi16(v_d1_w, v_m1_w);
+  const __m128i v_e1_d = _mm_madd_epi16(v_d1_w, v_m1_w);
+
+  // Squared error - using madd it's max (15 bits * 15 bits) * 2 = 31 bits
+  const __m128i v_se0_d = _mm_madd_epi16(v_e0_w, v_e0_w);
+  const __m128i v_se1_d = _mm_madd_epi16(v_e1_w, v_e1_w);
+
+  // Sum of v_se{0,1}_d - 31 bits + 31 bits = 32 bits
+  const __m128i v_se_d = _mm_add_epi32(v_se0_d, v_se1_d);
+
+  // Unpack Squared error to 64 bits
+  const __m128i v_se_lo_q = _mm_unpacklo_epi32(v_se_d, v_zero);
+  const __m128i v_se_hi_q = _mm_unpackhi_epi32(v_se_d, v_zero);
+
+  // Accumulate
+  *v_sum_d = _mm_add_epi32(*v_sum_d, v_e0_d);
+  *v_sum_d = _mm_add_epi32(*v_sum_d, v_e1_d);
+  *v_sse_q = _mm_add_epi64(*v_sse_q, v_se_lo_q);
+  *v_sse_q = _mm_add_epi64(*v_sse_q, v_se_hi_q);
+}
+
+// Functions for width (W) >= 16
+unsigned int aom_masked_subpel_varWxH_xzero(const uint8_t *src, int src_stride,
+                                            int yoffset, const uint8_t *dst,
+                                            int dst_stride, const uint8_t *msk,
+                                            int msk_stride, unsigned int *sse,
+                                            int w, int h,
+                                            filter_fn_t filter_fn) {
+  int i, j;
+  __m128i v_src0_b, v_src1_b, v_res_b, v_dst_b, v_msk_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  const __m128i v_filter_b = _mm_set1_epi16(
+      (bilinear_filters_2t[yoffset][1] << 8) + bilinear_filters_2t[yoffset][0]);
+  assert(yoffset < BIL_SUBPEL_SHIFTS);
+  for (j = 0; j < w; j += 16) {
+    // Load the first row ready
+    v_src0_b = _mm_loadu_si128((const __m128i *)(src + j));
+    // Process 2 rows at a time
+    for (i = 0; i < h; i += 2) {
+      // Load the next row apply the filter
+      v_src1_b = _mm_loadu_si128((const __m128i *)(src + j + src_stride));
+      v_res_b = filter_fn(v_src0_b, v_src1_b, v_filter_b);
+      // Load the dst and msk for the variance calculation
+      v_dst_b = _mm_loadu_si128((const __m128i *)(dst + j));
+      v_msk_b = _mm_loadu_si128((const __m128i *)(msk + j));
+      sum_and_sse(v_res_b, v_dst_b, v_msk_b, &v_sum_d, &v_sse_q);
+
+      // Load the next row apply the filter
+      v_src0_b = _mm_loadu_si128((const __m128i *)(src + j + src_stride * 2));
+      v_res_b = filter_fn(v_src1_b, v_src0_b, v_filter_b);
+      // Load the dst and msk for the variance calculation
+      v_dst_b = _mm_loadu_si128((const __m128i *)(dst + j + dst_stride));
+      v_msk_b = _mm_loadu_si128((const __m128i *)(msk + j + msk_stride));
+      sum_and_sse(v_res_b, v_dst_b, v_msk_b, &v_sum_d, &v_sse_q);
+      // Move onto the next block of rows
+      src += src_stride * 2;
+      dst += dst_stride * 2;
+      msk += msk_stride * 2;
+    }
+    // Reset to the top of the block
+    src -= src_stride * h;
+    dst -= dst_stride * h;
+    msk -= msk_stride * h;
+  }
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, w, h);
+}
+unsigned int aom_masked_subpel_varWxH_yzero(const uint8_t *src, int src_stride,
+                                            int xoffset, const uint8_t *dst,
+                                            int dst_stride, const uint8_t *msk,
+                                            int msk_stride, unsigned int *sse,
+                                            int w, int h,
+                                            filter_fn_t filter_fn) {
+  int i, j;
+  __m128i v_src0_b, v_src1_b, v_res_b, v_dst_b, v_msk_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  const __m128i v_filter_b = _mm_set1_epi16(
+      (bilinear_filters_2t[xoffset][1] << 8) + bilinear_filters_2t[xoffset][0]);
+  assert(xoffset < BIL_SUBPEL_SHIFTS);
+  for (i = 0; i < h; i++) {
+    for (j = 0; j < w; j += 16) {
+      // Load this row and one below & apply the filter to them
+      v_src0_b = _mm_loadu_si128((const __m128i *)(src + j));
+      v_src1_b = _mm_loadu_si128((const __m128i *)(src + j + 1));
+      v_res_b = filter_fn(v_src0_b, v_src1_b, v_filter_b);
+
+      // Load the dst and msk for the variance calculation
+      v_dst_b = _mm_loadu_si128((const __m128i *)(dst + j));
+      v_msk_b = _mm_loadu_si128((const __m128i *)(msk + j));
+      sum_and_sse(v_res_b, v_dst_b, v_msk_b, &v_sum_d, &v_sse_q);
+    }
+    src += src_stride;
+    dst += dst_stride;
+    msk += msk_stride;
+  }
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, w, h);
+}
+unsigned int aom_masked_subpel_varWxH_xnonzero_ynonzero(
+    const uint8_t *src, int src_stride, int xoffset, int yoffset,
+    const uint8_t *dst, int dst_stride, const uint8_t *msk, int msk_stride,
+    unsigned int *sse, int w, int h, filter_fn_t xfilter_fn,
+    filter_fn_t yfilter_fn) {
+  int i, j;
+  __m128i v_src0_b, v_src1_b, v_src2_b, v_src3_b;
+  __m128i v_filtered0_b, v_filtered1_b, v_res_b, v_dst_b, v_msk_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  const __m128i v_filterx_b = _mm_set1_epi16(
+      (bilinear_filters_2t[xoffset][1] << 8) + bilinear_filters_2t[xoffset][0]);
+  const __m128i v_filtery_b = _mm_set1_epi16(
+      (bilinear_filters_2t[yoffset][1] << 8) + bilinear_filters_2t[yoffset][0]);
+  assert(yoffset < BIL_SUBPEL_SHIFTS);
+  assert(xoffset < BIL_SUBPEL_SHIFTS);
+  for (j = 0; j < w; j += 16) {
+    // Load the first row ready
+    v_src0_b = _mm_loadu_si128((const __m128i *)(src + j));
+    v_src1_b = _mm_loadu_si128((const __m128i *)(src + j + 1));
+    v_filtered0_b = xfilter_fn(v_src0_b, v_src1_b, v_filterx_b);
+    // Process 2 rows at a time
+    for (i = 0; i < h; i += 2) {
+      // Load the next row & apply the filter
+      v_src2_b = _mm_loadu_si128((const __m128i *)(src + src_stride + j));
+      v_src3_b = _mm_loadu_si128((const __m128i *)(src + src_stride + j + 1));
+      v_filtered1_b = xfilter_fn(v_src2_b, v_src3_b, v_filterx_b);
+      // Load the dst and msk for the variance calculation
+      v_dst_b = _mm_loadu_si128((const __m128i *)(dst + j));
+      v_msk_b = _mm_loadu_si128((const __m128i *)(msk + j));
+      // Complete the calculation for this row and add it to the running total
+      v_res_b = yfilter_fn(v_filtered0_b, v_filtered1_b, v_filtery_b);
+      sum_and_sse(v_res_b, v_dst_b, v_msk_b, &v_sum_d, &v_sse_q);
+
+      // Load the next row & apply the filter
+      v_src0_b = _mm_loadu_si128((const __m128i *)(src + src_stride * 2 + j));
+      v_src1_b =
+          _mm_loadu_si128((const __m128i *)(src + src_stride * 2 + j + 1));
+      v_filtered0_b = xfilter_fn(v_src0_b, v_src1_b, v_filterx_b);
+      // Load the dst and msk for the variance calculation
+      v_dst_b = _mm_loadu_si128((const __m128i *)(dst + dst_stride + j));
+      v_msk_b = _mm_loadu_si128((const __m128i *)(msk + msk_stride + j));
+      // Complete the calculation for this row and add it to the running total
+      v_res_b = yfilter_fn(v_filtered1_b, v_filtered0_b, v_filtery_b);
+      sum_and_sse(v_res_b, v_dst_b, v_msk_b, &v_sum_d, &v_sse_q);
+      // Move onto the next block of rows
+      src += src_stride * 2;
+      dst += dst_stride * 2;
+      msk += msk_stride * 2;
+    }
+    // Reset to the top of the block
+    src -= src_stride * h;
+    dst -= dst_stride * h;
+    msk -= msk_stride * h;
+  }
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, w, h);
+}
+
+// Note order in which rows loaded xmm[127:96] = row 1, xmm[95:64] = row 2,
+// xmm[63:32] = row 3, xmm[31:0] = row 4
+unsigned int aom_masked_subpel_var4xH_xzero(const uint8_t *src, int src_stride,
+                                            int yoffset, const uint8_t *dst,
+                                            int dst_stride, const uint8_t *msk,
+                                            int msk_stride, unsigned int *sse,
+                                            int h) {
+  int i;
+  __m128i v_src0_b, v_src1_b, v_src2_b, v_src3_b, v_filtered1_w, v_filtered2_w;
+  __m128i v_dst0_b, v_dst1_b, v_dst2_b, v_dst3_b;
+  __m128i v_msk0_b, v_msk1_b, v_msk2_b, v_msk3_b, v_res_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  __m128i v_filter_b = _mm_set1_epi16((bilinear_filters_2t[yoffset][1] << 8) +
+                                      bilinear_filters_2t[yoffset][0]);
+  assert(yoffset < BIL_SUBPEL_SHIFTS);
+  // Load the first row of src data ready
+  v_src0_b = _mm_loadl_epi64((const __m128i *)src);
+  for (i = 0; i < h; i += 4) {
+    // Load the rest of the source data for these rows
+    v_src1_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 1));
+    v_src1_b = _mm_unpacklo_epi32(v_src1_b, v_src0_b);
+    v_src2_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 2));
+    v_src3_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 3));
+    v_src3_b = _mm_unpacklo_epi32(v_src3_b, v_src2_b);
+    v_src0_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 4));
+    // Load the dst data
+    v_dst0_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 0));
+    v_dst1_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 1));
+    v_dst0_b = _mm_unpacklo_epi32(v_dst1_b, v_dst0_b);
+    v_dst2_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 2));
+    v_dst3_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 3));
+    v_dst2_b = _mm_unpacklo_epi32(v_dst3_b, v_dst2_b);
+    v_dst0_b = _mm_unpacklo_epi64(v_dst2_b, v_dst0_b);
+    // Load the mask data
+    v_msk0_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 0));
+    v_msk1_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 1));
+    v_msk0_b = _mm_unpacklo_epi32(v_msk1_b, v_msk0_b);
+    v_msk2_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 2));
+    v_msk3_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 3));
+    v_msk2_b = _mm_unpacklo_epi32(v_msk3_b, v_msk2_b);
+    v_msk0_b = _mm_unpacklo_epi64(v_msk2_b, v_msk0_b);
+    // Apply the y filter
+    if (yoffset == HALF_PIXEL_OFFSET) {
+      v_src1_b = _mm_unpacklo_epi64(v_src3_b, v_src1_b);
+      v_src2_b =
+          _mm_or_si128(_mm_slli_si128(v_src1_b, 4),
+                       _mm_and_si128(v_src0_b, _mm_setr_epi32(-1, 0, 0, 0)));
+      v_res_b = _mm_avg_epu8(v_src1_b, v_src2_b);
+    } else {
+      v_src2_b =
+          _mm_or_si128(_mm_slli_si128(v_src1_b, 4),
+                       _mm_and_si128(v_src2_b, _mm_setr_epi32(-1, 0, 0, 0)));
+      apply_filter_lo(v_src1_b, v_src2_b, v_filter_b, &v_filtered1_w);
+      v_src2_b =
+          _mm_or_si128(_mm_slli_si128(v_src3_b, 4),
+                       _mm_and_si128(v_src0_b, _mm_setr_epi32(-1, 0, 0, 0)));
+      apply_filter_lo(v_src3_b, v_src2_b, v_filter_b, &v_filtered2_w);
+      v_res_b = _mm_packus_epi16(v_filtered2_w, v_filtered1_w);
+    }
+    // Compute the sum and SSE
+    sum_and_sse(v_res_b, v_dst0_b, v_msk0_b, &v_sum_d, &v_sse_q);
+    // Move onto the next set of rows
+    src += src_stride * 4;
+    dst += dst_stride * 4;
+    msk += msk_stride * 4;
+  }
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, 4, h);
+}
+
+// Note order in which rows loaded xmm[127:64] = row 1, xmm[63:0] = row 2
+unsigned int aom_masked_subpel_var8xH_xzero(const uint8_t *src, int src_stride,
+                                            int yoffset, const uint8_t *dst,
+                                            int dst_stride, const uint8_t *msk,
+                                            int msk_stride, unsigned int *sse,
+                                            int h) {
+  int i;
+  __m128i v_src0_b, v_src1_b, v_filtered0_w, v_filtered1_w, v_res_b;
+  __m128i v_dst_b = _mm_setzero_si128();
+  __m128i v_msk_b = _mm_setzero_si128();
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  __m128i v_filter_b = _mm_set1_epi16((bilinear_filters_2t[yoffset][1] << 8) +
+                                      bilinear_filters_2t[yoffset][0]);
+  assert(yoffset < BIL_SUBPEL_SHIFTS);
+  // Load the first row of src data ready
+  v_src0_b = _mm_loadl_epi64((const __m128i *)src);
+  for (i = 0; i < h; i += 2) {
+    if (yoffset == HALF_PIXEL_OFFSET) {
+      // Load the rest of the source data for these rows
+      v_src1_b = _mm_or_si128(
+          _mm_slli_si128(v_src0_b, 8),
+          _mm_loadl_epi64((const __m128i *)(src + src_stride * 1)));
+      v_src0_b = _mm_or_si128(
+          _mm_slli_si128(v_src1_b, 8),
+          _mm_loadl_epi64((const __m128i *)(src + src_stride * 2)));
+      // Apply the y filter
+      v_res_b = _mm_avg_epu8(v_src1_b, v_src0_b);
+    } else {
+      // Load the data and apply the y filter
+      v_src1_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 1));
+      apply_filter_lo(v_src0_b, v_src1_b, v_filter_b, &v_filtered0_w);
+      v_src0_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 2));
+      apply_filter_lo(v_src1_b, v_src0_b, v_filter_b, &v_filtered1_w);
+      v_res_b = _mm_packus_epi16(v_filtered1_w, v_filtered0_w);
+    }
+    // Load the dst data
+    v_dst_b = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 1)),
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 0)));
+    // Load the mask data
+    v_msk_b = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 1)),
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 0)));
+    // Compute the sum and SSE
+    sum_and_sse(v_res_b, v_dst_b, v_msk_b, &v_sum_d, &v_sse_q);
+    // Move onto the next set of rows
+    src += src_stride * 2;
+    dst += dst_stride * 2;
+    msk += msk_stride * 2;
+  }
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, 8, h);
+}
+
+// Note order in which rows loaded xmm[127:96] = row 1, xmm[95:64] = row 2,
+// xmm[63:32] = row 3, xmm[31:0] = row 4
+unsigned int aom_masked_subpel_var4xH_yzero(const uint8_t *src, int src_stride,
+                                            int xoffset, const uint8_t *dst,
+                                            int dst_stride, const uint8_t *msk,
+                                            int msk_stride, unsigned int *sse,
+                                            int h) {
+  int i;
+  __m128i v_src0_b, v_src1_b, v_src2_b, v_src3_b, v_filtered0_w, v_filtered2_w;
+  __m128i v_src0_shift_b, v_src1_shift_b, v_src2_shift_b, v_src3_shift_b;
+  __m128i v_dst0_b, v_dst1_b, v_dst2_b, v_dst3_b;
+  __m128i v_msk0_b, v_msk1_b, v_msk2_b, v_msk3_b, v_res_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  __m128i v_filter_b = _mm_set1_epi16((bilinear_filters_2t[xoffset][1] << 8) +
+                                      bilinear_filters_2t[xoffset][0]);
+  assert(xoffset < BIL_SUBPEL_SHIFTS);
+  for (i = 0; i < h; i += 4) {
+    // Load the src data
+    v_src0_b = _mm_loadl_epi64((const __m128i *)src);
+    v_src0_shift_b = _mm_srli_si128(v_src0_b, 1);
+    v_src1_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 1));
+    v_src0_b = _mm_unpacklo_epi32(v_src1_b, v_src0_b);
+    v_src1_shift_b = _mm_srli_si128(v_src1_b, 1);
+    v_src2_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 2));
+    v_src0_shift_b = _mm_unpacklo_epi32(v_src1_shift_b, v_src0_shift_b);
+    v_src2_shift_b = _mm_srli_si128(v_src2_b, 1);
+    v_src3_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 3));
+    v_src2_b = _mm_unpacklo_epi32(v_src3_b, v_src2_b);
+    v_src3_shift_b = _mm_srli_si128(v_src3_b, 1);
+    v_src2_shift_b = _mm_unpacklo_epi32(v_src3_shift_b, v_src2_shift_b);
+    // Load the dst data
+    v_dst0_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 0));
+    v_dst1_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 1));
+    v_dst0_b = _mm_unpacklo_epi32(v_dst1_b, v_dst0_b);
+    v_dst2_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 2));
+    v_dst3_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 3));
+    v_dst2_b = _mm_unpacklo_epi32(v_dst3_b, v_dst2_b);
+    v_dst0_b = _mm_unpacklo_epi64(v_dst2_b, v_dst0_b);
+    // Load the mask data
+    v_msk0_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 0));
+    v_msk1_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 1));
+    v_msk0_b = _mm_unpacklo_epi32(v_msk1_b, v_msk0_b);
+    v_msk2_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 2));
+    v_msk3_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 3));
+    v_msk2_b = _mm_unpacklo_epi32(v_msk3_b, v_msk2_b);
+    v_msk0_b = _mm_unpacklo_epi64(v_msk2_b, v_msk0_b);
+    // Apply the x filter
+    if (xoffset == HALF_PIXEL_OFFSET) {
+      v_src0_b = _mm_unpacklo_epi64(v_src2_b, v_src0_b);
+      v_src0_shift_b = _mm_unpacklo_epi64(v_src2_shift_b, v_src0_shift_b);
+      v_res_b = _mm_avg_epu8(v_src0_b, v_src0_shift_b);
+    } else {
+      apply_filter_lo(v_src0_b, v_src0_shift_b, v_filter_b, &v_filtered0_w);
+      apply_filter_lo(v_src2_b, v_src2_shift_b, v_filter_b, &v_filtered2_w);
+      v_res_b = _mm_packus_epi16(v_filtered2_w, v_filtered0_w);
+    }
+    // Compute the sum and SSE
+    sum_and_sse(v_res_b, v_dst0_b, v_msk0_b, &v_sum_d, &v_sse_q);
+    // Move onto the next set of rows
+    src += src_stride * 4;
+    dst += dst_stride * 4;
+    msk += msk_stride * 4;
+  }
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, 4, h);
+}
+
+unsigned int aom_masked_subpel_var8xH_yzero(const uint8_t *src, int src_stride,
+                                            int xoffset, const uint8_t *dst,
+                                            int dst_stride, const uint8_t *msk,
+                                            int msk_stride, unsigned int *sse,
+                                            int h) {
+  int i;
+  __m128i v_src0_b, v_src1_b, v_filtered0_w, v_filtered1_w;
+  __m128i v_src0_shift_b, v_src1_shift_b, v_res_b, v_dst_b, v_msk_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  __m128i v_filter_b = _mm_set1_epi16((bilinear_filters_2t[xoffset][1] << 8) +
+                                      bilinear_filters_2t[xoffset][0]);
+  assert(xoffset < BIL_SUBPEL_SHIFTS);
+  for (i = 0; i < h; i += 2) {
+    // Load the src data
+    v_src0_b = _mm_loadu_si128((const __m128i *)(src));
+    v_src0_shift_b = _mm_srli_si128(v_src0_b, 1);
+    v_src1_b = _mm_loadu_si128((const __m128i *)(src + src_stride));
+    v_src1_shift_b = _mm_srli_si128(v_src1_b, 1);
+    // Apply the x filter
+    if (xoffset == HALF_PIXEL_OFFSET) {
+      v_src1_b = _mm_unpacklo_epi64(v_src0_b, v_src1_b);
+      v_src1_shift_b = _mm_unpacklo_epi64(v_src0_shift_b, v_src1_shift_b);
+      v_res_b = _mm_avg_epu8(v_src1_b, v_src1_shift_b);
+    } else {
+      apply_filter_lo(v_src0_b, v_src0_shift_b, v_filter_b, &v_filtered0_w);
+      apply_filter_lo(v_src1_b, v_src1_shift_b, v_filter_b, &v_filtered1_w);
+      v_res_b = _mm_packus_epi16(v_filtered0_w, v_filtered1_w);
+    }
+    // Load the dst data
+    v_dst_b = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 0)),
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 1)));
+    // Load the mask data
+    v_msk_b = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 0)),
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 1)));
+    // Compute the sum and SSE
+    sum_and_sse(v_res_b, v_dst_b, v_msk_b, &v_sum_d, &v_sse_q);
+    // Move onto the next set of rows
+    src += src_stride * 2;
+    dst += dst_stride * 2;
+    msk += msk_stride * 2;
+  }
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, 8, h);
+}
+
+// Note order in which rows loaded xmm[127:96] = row 1, xmm[95:64] = row 2,
+// xmm[63:32] = row 3, xmm[31:0] = row 4
+unsigned int aom_masked_subpel_var4xH_xnonzero_ynonzero(
+    const uint8_t *src, int src_stride, int xoffset, int yoffset,
+    const uint8_t *dst, int dst_stride, const uint8_t *msk, int msk_stride,
+    unsigned int *sse, int h) {
+  int i;
+  __m128i v_src0_b, v_src1_b, v_src2_b, v_src3_b, v_filtered0_w, v_filtered2_w;
+  __m128i v_src0_shift_b, v_src1_shift_b, v_src2_shift_b, v_src3_shift_b;
+  __m128i v_dst0_b, v_dst1_b, v_dst2_b, v_dst3_b, v_temp_b;
+  __m128i v_msk0_b, v_msk1_b, v_msk2_b, v_msk3_b, v_extra_row_b, v_res_b;
+  __m128i v_xres_b[2];
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  __m128i v_filterx_b = _mm_set1_epi16((bilinear_filters_2t[xoffset][1] << 8) +
+                                       bilinear_filters_2t[xoffset][0]);
+  __m128i v_filtery_b = _mm_set1_epi16((bilinear_filters_2t[yoffset][1] << 8) +
+                                       bilinear_filters_2t[yoffset][0]);
+  assert(xoffset < BIL_SUBPEL_SHIFTS);
+  assert(yoffset < BIL_SUBPEL_SHIFTS);
+  for (i = 0; i < h; i += 4) {
+    // Load the src data
+    v_src0_b = _mm_loadl_epi64((const __m128i *)src);
+    v_src0_shift_b = _mm_srli_si128(v_src0_b, 1);
+    v_src1_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 1));
+    v_src0_b = _mm_unpacklo_epi32(v_src1_b, v_src0_b);
+    v_src1_shift_b = _mm_srli_si128(v_src1_b, 1);
+    v_src2_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 2));
+    v_src0_shift_b = _mm_unpacklo_epi32(v_src1_shift_b, v_src0_shift_b);
+    v_src2_shift_b = _mm_srli_si128(v_src2_b, 1);
+    v_src3_b = _mm_loadl_epi64((const __m128i *)(src + src_stride * 3));
+    v_src2_b = _mm_unpacklo_epi32(v_src3_b, v_src2_b);
+    v_src3_shift_b = _mm_srli_si128(v_src3_b, 1);
+    v_src2_shift_b = _mm_unpacklo_epi32(v_src3_shift_b, v_src2_shift_b);
+    // Apply the x filter
+    if (xoffset == HALF_PIXEL_OFFSET) {
+      v_src0_b = _mm_unpacklo_epi64(v_src2_b, v_src0_b);
+      v_src0_shift_b = _mm_unpacklo_epi64(v_src2_shift_b, v_src0_shift_b);
+      v_xres_b[i == 0 ? 0 : 1] = _mm_avg_epu8(v_src0_b, v_src0_shift_b);
+    } else {
+      apply_filter_lo(v_src0_b, v_src0_shift_b, v_filterx_b, &v_filtered0_w);
+      apply_filter_lo(v_src2_b, v_src2_shift_b, v_filterx_b, &v_filtered2_w);
+      v_xres_b[i == 0 ? 0 : 1] = _mm_packus_epi16(v_filtered2_w, v_filtered0_w);
+    }
+    // Move onto the next set of rows
+    src += src_stride * 4;
+  }
+  // Load one more row to be used in the y filter
+  v_src0_b = _mm_loadl_epi64((const __m128i *)src);
+  v_src0_shift_b = _mm_srli_si128(v_src0_b, 1);
+  // Apply the x filter
+  if (xoffset == HALF_PIXEL_OFFSET) {
+    v_extra_row_b = _mm_and_si128(_mm_avg_epu8(v_src0_b, v_src0_shift_b),
+                                  _mm_setr_epi32(-1, 0, 0, 0));
+  } else {
+    apply_filter_lo(v_src0_b, v_src0_shift_b, v_filterx_b, &v_filtered0_w);
+    v_extra_row_b =
+        _mm_and_si128(_mm_packus_epi16(v_filtered0_w, _mm_setzero_si128()),
+                      _mm_setr_epi32(-1, 0, 0, 0));
+  }
+
+  for (i = 0; i < h; i += 4) {
+    if (h == 8 && i == 0) {
+      v_temp_b = _mm_or_si128(_mm_slli_si128(v_xres_b[0], 4),
+                              _mm_srli_si128(v_xres_b[1], 12));
+    } else {
+      v_temp_b = _mm_or_si128(_mm_slli_si128(v_xres_b[i == 0 ? 0 : 1], 4),
+                              v_extra_row_b);
+    }
+    // Apply the y filter
+    if (yoffset == HALF_PIXEL_OFFSET) {
+      v_res_b = _mm_avg_epu8(v_xres_b[i == 0 ? 0 : 1], v_temp_b);
+    } else {
+      v_res_b = apply_filter(v_xres_b[i == 0 ? 0 : 1], v_temp_b, v_filtery_b);
+    }
+
+    // Load the dst data
+    v_dst0_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 0));
+    v_dst1_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 1));
+    v_dst0_b = _mm_unpacklo_epi32(v_dst1_b, v_dst0_b);
+    v_dst2_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 2));
+    v_dst3_b = _mm_cvtsi32_si128(*(const uint32_t *)(dst + dst_stride * 3));
+    v_dst2_b = _mm_unpacklo_epi32(v_dst3_b, v_dst2_b);
+    v_dst0_b = _mm_unpacklo_epi64(v_dst2_b, v_dst0_b);
+    // Load the mask data
+    v_msk0_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 0));
+    v_msk1_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 1));
+    v_msk0_b = _mm_unpacklo_epi32(v_msk1_b, v_msk0_b);
+    v_msk2_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 2));
+    v_msk3_b = _mm_cvtsi32_si128(*(const uint32_t *)(msk + msk_stride * 3));
+    v_msk2_b = _mm_unpacklo_epi32(v_msk3_b, v_msk2_b);
+    v_msk0_b = _mm_unpacklo_epi64(v_msk2_b, v_msk0_b);
+    // Compute the sum and SSE
+    sum_and_sse(v_res_b, v_dst0_b, v_msk0_b, &v_sum_d, &v_sse_q);
+    // Move onto the next set of rows
+    dst += dst_stride * 4;
+    msk += msk_stride * 4;
+  }
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, 4, h);
+}
+
+unsigned int aom_masked_subpel_var8xH_xnonzero_ynonzero(
+    const uint8_t *src, int src_stride, int xoffset, int yoffset,
+    const uint8_t *dst, int dst_stride, const uint8_t *msk, int msk_stride,
+    unsigned int *sse, int h) {
+  int i;
+  __m128i v_src0_b, v_src1_b, v_filtered0_w, v_filtered1_w, v_dst_b, v_msk_b;
+  __m128i v_src0_shift_b, v_src1_shift_b;
+  __m128i v_xres0_b, v_xres1_b, v_res_b, v_temp_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  __m128i v_filterx_b = _mm_set1_epi16((bilinear_filters_2t[xoffset][1] << 8) +
+                                       bilinear_filters_2t[xoffset][0]);
+  __m128i v_filtery_b = _mm_set1_epi16((bilinear_filters_2t[yoffset][1] << 8) +
+                                       bilinear_filters_2t[yoffset][0]);
+  assert(xoffset < BIL_SUBPEL_SHIFTS);
+  assert(yoffset < BIL_SUBPEL_SHIFTS);
+  // Load the first block of src data
+  v_src0_b = _mm_loadu_si128((const __m128i *)(src));
+  v_src0_shift_b = _mm_srli_si128(v_src0_b, 1);
+  v_src1_b = _mm_loadu_si128((const __m128i *)(src + src_stride));
+  v_src1_shift_b = _mm_srli_si128(v_src1_b, 1);
+  // Apply the x filter
+  if (xoffset == HALF_PIXEL_OFFSET) {
+    v_src1_b = _mm_unpacklo_epi64(v_src0_b, v_src1_b);
+    v_src1_shift_b = _mm_unpacklo_epi64(v_src0_shift_b, v_src1_shift_b);
+    v_xres0_b = _mm_avg_epu8(v_src1_b, v_src1_shift_b);
+  } else {
+    apply_filter_lo(v_src0_b, v_src0_shift_b, v_filterx_b, &v_filtered0_w);
+    apply_filter_lo(v_src1_b, v_src1_shift_b, v_filterx_b, &v_filtered1_w);
+    v_xres0_b = _mm_packus_epi16(v_filtered0_w, v_filtered1_w);
+  }
+  for (i = 0; i < h; i += 4) {
+    // Load the next block of src data
+    v_src0_b = _mm_loadu_si128((const __m128i *)(src + src_stride * 2));
+    v_src0_shift_b = _mm_srli_si128(v_src0_b, 1);
+    v_src1_b = _mm_loadu_si128((const __m128i *)(src + src_stride * 3));
+    v_src1_shift_b = _mm_srli_si128(v_src1_b, 1);
+    // Apply the x filter
+    if (xoffset == HALF_PIXEL_OFFSET) {
+      v_src1_b = _mm_unpacklo_epi64(v_src0_b, v_src1_b);
+      v_src1_shift_b = _mm_unpacklo_epi64(v_src0_shift_b, v_src1_shift_b);
+      v_xres1_b = _mm_avg_epu8(v_src1_b, v_src1_shift_b);
+    } else {
+      apply_filter_lo(v_src0_b, v_src0_shift_b, v_filterx_b, &v_filtered0_w);
+      apply_filter_lo(v_src1_b, v_src1_shift_b, v_filterx_b, &v_filtered1_w);
+      v_xres1_b = _mm_packus_epi16(v_filtered0_w, v_filtered1_w);
+    }
+    // Apply the y filter to the previous block
+    v_temp_b = _mm_or_si128(_mm_srli_si128(v_xres0_b, 8),
+                            _mm_slli_si128(v_xres1_b, 8));
+    if (yoffset == HALF_PIXEL_OFFSET) {
+      v_res_b = _mm_avg_epu8(v_xres0_b, v_temp_b);
+    } else {
+      v_res_b = apply_filter(v_xres0_b, v_temp_b, v_filtery_b);
+    }
+    // Load the dst data
+    v_dst_b = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 0)),
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 1)));
+    // Load the mask data
+    v_msk_b = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 0)),
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 1)));
+    // Compute the sum and SSE
+    sum_and_sse(v_res_b, v_dst_b, v_msk_b, &v_sum_d, &v_sse_q);
+
+    // Load the next block of src data
+    v_src0_b = _mm_loadu_si128((const __m128i *)(src + src_stride * 4));
+    v_src0_shift_b = _mm_srli_si128(v_src0_b, 1);
+    v_src1_b = _mm_loadu_si128((const __m128i *)(src + src_stride * 5));
+    v_src1_shift_b = _mm_srli_si128(v_src1_b, 1);
+    // Apply the x filter
+    if (xoffset == HALF_PIXEL_OFFSET) {
+      v_src1_b = _mm_unpacklo_epi64(v_src0_b, v_src1_b);
+      v_src1_shift_b = _mm_unpacklo_epi64(v_src0_shift_b, v_src1_shift_b);
+      v_xres0_b = _mm_avg_epu8(v_src1_b, v_src1_shift_b);
+    } else {
+      apply_filter_lo(v_src0_b, v_src0_shift_b, v_filterx_b, &v_filtered0_w);
+      apply_filter_lo(v_src1_b, v_src1_shift_b, v_filterx_b, &v_filtered1_w);
+      v_xres0_b = _mm_packus_epi16(v_filtered0_w, v_filtered1_w);
+    }
+    // Apply the y filter to the previous block
+    v_temp_b = _mm_or_si128(_mm_srli_si128(v_xres1_b, 8),
+                            _mm_slli_si128(v_xres0_b, 8));
+    if (yoffset == HALF_PIXEL_OFFSET) {
+      v_res_b = _mm_avg_epu8(v_xres1_b, v_temp_b);
+    } else {
+      v_res_b = apply_filter(v_xres1_b, v_temp_b, v_filtery_b);
+    }
+    // Load the dst data
+    v_dst_b = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 2)),
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 3)));
+    // Load the mask data
+    v_msk_b = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 2)),
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 3)));
+    // Compute the sum and SSE
+    sum_and_sse(v_res_b, v_dst_b, v_msk_b, &v_sum_d, &v_sse_q);
+    // Move onto the next set of rows
+    src += src_stride * 4;
+    dst += dst_stride * 4;
+    msk += msk_stride * 4;
+  }
+  return calc_masked_variance(v_sum_d, v_sse_q, sse, 8, h);
+}
+
+// For W >=16
+#define MASK_SUBPIX_VAR_LARGE(W, H)                                            \
+  unsigned int aom_masked_sub_pixel_variance##W##x##H##_ssse3(                 \
+      const uint8_t *src, int src_stride, int xoffset, int yoffset,            \
+      const uint8_t *dst, int dst_stride, const uint8_t *msk, int msk_stride,  \
+      unsigned int *sse) {                                                     \
+    assert(W % 16 == 0);                                                       \
+    if (xoffset == 0) {                                                        \
+      if (yoffset == 0)                                                        \
+        return aom_masked_variance##W##x##H##_ssse3(                           \
+            src, src_stride, dst, dst_stride, msk, msk_stride, sse);           \
+      else if (yoffset == HALF_PIXEL_OFFSET)                                   \
+        return aom_masked_subpel_varWxH_xzero(                                 \
+            src, src_stride, HALF_PIXEL_OFFSET, dst, dst_stride, msk,          \
+            msk_stride, sse, W, H, apply_filter_avg);                          \
+      else                                                                     \
+        return aom_masked_subpel_varWxH_xzero(src, src_stride, yoffset, dst,   \
+                                              dst_stride, msk, msk_stride,     \
+                                              sse, W, H, apply_filter);        \
+    } else if (yoffset == 0) {                                                 \
+      if (xoffset == HALF_PIXEL_OFFSET)                                        \
+        return aom_masked_subpel_varWxH_yzero(                                 \
+            src, src_stride, HALF_PIXEL_OFFSET, dst, dst_stride, msk,          \
+            msk_stride, sse, W, H, apply_filter_avg);                          \
+      else                                                                     \
+        return aom_masked_subpel_varWxH_yzero(src, src_stride, xoffset, dst,   \
+                                              dst_stride, msk, msk_stride,     \
+                                              sse, W, H, apply_filter);        \
+    } else if (xoffset == HALF_PIXEL_OFFSET) {                                 \
+      if (yoffset == HALF_PIXEL_OFFSET)                                        \
+        return aom_masked_subpel_varWxH_xnonzero_ynonzero(                     \
+            src, src_stride, HALF_PIXEL_OFFSET, HALF_PIXEL_OFFSET, dst,        \
+            dst_stride, msk, msk_stride, sse, W, H, apply_filter_avg,          \
+            apply_filter_avg);                                                 \
+      else                                                                     \
+        return aom_masked_subpel_varWxH_xnonzero_ynonzero(                     \
+            src, src_stride, HALF_PIXEL_OFFSET, yoffset, dst, dst_stride, msk, \
+            msk_stride, sse, W, H, apply_filter_avg, apply_filter);            \
+    } else {                                                                   \
+      if (yoffset == HALF_PIXEL_OFFSET)                                        \
+        return aom_masked_subpel_varWxH_xnonzero_ynonzero(                     \
+            src, src_stride, xoffset, HALF_PIXEL_OFFSET, dst, dst_stride, msk, \
+            msk_stride, sse, W, H, apply_filter, apply_filter_avg);            \
+      else                                                                     \
+        return aom_masked_subpel_varWxH_xnonzero_ynonzero(                     \
+            src, src_stride, xoffset, yoffset, dst, dst_stride, msk,           \
+            msk_stride, sse, W, H, apply_filter, apply_filter);                \
+    }                                                                          \
+  }
+
+// For W < 16
+#define MASK_SUBPIX_VAR_SMALL(W, H)                                            \
+  unsigned int aom_masked_sub_pixel_variance##W##x##H##_ssse3(                 \
+      const uint8_t *src, int src_stride, int xoffset, int yoffset,            \
+      const uint8_t *dst, int dst_stride, const uint8_t *msk, int msk_stride,  \
+      unsigned int *sse) {                                                     \
+    assert(W == 4 || W == 8);                                                  \
+    if (xoffset == 0 && yoffset == 0)                                          \
+      return aom_masked_variance##W##x##H##_ssse3(                             \
+          src, src_stride, dst, dst_stride, msk, msk_stride, sse);             \
+    else if (xoffset == 0)                                                     \
+      return aom_masked_subpel_var##W##xH_xzero(                               \
+          src, src_stride, yoffset, dst, dst_stride, msk, msk_stride, sse, H); \
+    else if (yoffset == 0)                                                     \
+      return aom_masked_subpel_var##W##xH_yzero(                               \
+          src, src_stride, xoffset, dst, dst_stride, msk, msk_stride, sse, H); \
+    else                                                                       \
+      return aom_masked_subpel_var##W##xH_xnonzero_ynonzero(                   \
+          src, src_stride, xoffset, yoffset, dst, dst_stride, msk, msk_stride, \
+          sse, H);                                                             \
+  }
+
+MASK_SUBPIX_VAR_SMALL(4, 4)
+MASK_SUBPIX_VAR_SMALL(4, 8)
+MASK_SUBPIX_VAR_SMALL(8, 4)
+MASK_SUBPIX_VAR_SMALL(8, 8)
+MASK_SUBPIX_VAR_SMALL(8, 16)
+MASK_SUBPIX_VAR_LARGE(16, 8)
+MASK_SUBPIX_VAR_LARGE(16, 16)
+MASK_SUBPIX_VAR_LARGE(16, 32)
+MASK_SUBPIX_VAR_LARGE(32, 16)
+MASK_SUBPIX_VAR_LARGE(32, 32)
+MASK_SUBPIX_VAR_LARGE(32, 64)
+MASK_SUBPIX_VAR_LARGE(64, 32)
+MASK_SUBPIX_VAR_LARGE(64, 64)
+#if CONFIG_EXT_PARTITION
+MASK_SUBPIX_VAR_LARGE(64, 128)
+MASK_SUBPIX_VAR_LARGE(128, 64)
+MASK_SUBPIX_VAR_LARGE(128, 128)
+#endif  // CONFIG_EXT_PARTITION
+
+#if CONFIG_HIGHBITDEPTH
+typedef uint32_t (*highbd_calc_masked_var_t)(__m128i v_sum_d, __m128i v_sse_q,
+                                             uint32_t *sse, int w, int h);
+typedef unsigned int (*highbd_variance_fn_t)(const uint8_t *a8, int a_stride,
+                                             const uint8_t *b8, int b_stride,
+                                             const uint8_t *m, int m_stride,
+                                             unsigned int *sse);
+typedef __m128i (*highbd_filter_fn_t)(__m128i v_a_w, __m128i v_b_w,
+                                      __m128i v_filter_w);
+
+static INLINE __m128i highbd_apply_filter_avg(const __m128i v_a_w,
+                                              const __m128i v_b_w,
+                                              const __m128i v_filter_w) {
+  (void)v_filter_w;
+  return _mm_avg_epu16(v_a_w, v_b_w);
+}
+
+static INLINE __m128i highbd_apply_filter(const __m128i v_a_w,
+                                          const __m128i v_b_w,
+                                          const __m128i v_filter_w) {
+  const __m128i v_rounding_d = _mm_set1_epi32(1 << (FILTER_BITS - 1));
+  __m128i v_input_lo_w = _mm_unpacklo_epi16(v_a_w, v_b_w);
+  __m128i v_input_hi_w = _mm_unpackhi_epi16(v_a_w, v_b_w);
+  __m128i v_temp0_d = _mm_madd_epi16(v_input_lo_w, v_filter_w);
+  __m128i v_temp1_d = _mm_madd_epi16(v_input_hi_w, v_filter_w);
+  __m128i v_res_lo_d =
+      _mm_srai_epi32(_mm_add_epi32(v_temp0_d, v_rounding_d), FILTER_BITS);
+  __m128i v_res_hi_d =
+      _mm_srai_epi32(_mm_add_epi32(v_temp1_d, v_rounding_d), FILTER_BITS);
+  return _mm_packs_epi32(v_res_lo_d, v_res_hi_d);
+}
+// Apply the filter to the contents of the lower half of a and b
+static INLINE void highbd_apply_filter_lo(const __m128i v_a_lo_w,
+                                          const __m128i v_b_lo_w,
+                                          const __m128i v_filter_w,
+                                          __m128i *v_res_d) {
+  const __m128i v_rounding_d = _mm_set1_epi32(1 << (FILTER_BITS - 1));
+  __m128i v_input_w = _mm_unpacklo_epi16(v_a_lo_w, v_b_lo_w);
+  __m128i v_temp0_d = _mm_madd_epi16(v_input_w, v_filter_w);
+  *v_res_d =
+      _mm_srai_epi32(_mm_add_epi32(v_temp0_d, v_rounding_d), FILTER_BITS);
+}
+
+static void highbd_sum_and_sse(const __m128i v_a_w, const __m128i v_b_w,
+                               const __m128i v_m_b, __m128i *v_sum_d,
+                               __m128i *v_sse_q) {
+  const __m128i v_zero = _mm_setzero_si128();
+  const __m128i v_m_w = _mm_unpacklo_epi8(v_m_b, v_zero);
+
+  // Difference: [-2^12, 2^12] => 13 bits (incld sign bit)
+  const __m128i v_d_w = _mm_sub_epi16(v_a_w, v_b_w);
+
+  // Error - [-4095, 4095] * [0, 64] & sum pairs => fits in 19 + 1 bits
+  const __m128i v_e_d = _mm_madd_epi16(v_d_w, v_m_w);
+
+  // Squared error - max (18 bits * 18 bits) = 36 bits (no sign bit)
+  const __m128i v_absd_w = _mm_abs_epi16(v_d_w);
+  const __m128i v_dlo_d = _mm_unpacklo_epi16(v_absd_w, v_zero);
+  const __m128i v_mlo_d = _mm_unpacklo_epi16(v_m_w, v_zero);
+  const __m128i v_elo_d = _mm_madd_epi16(v_dlo_d, v_mlo_d);
+  const __m128i v_dhi_d = _mm_unpackhi_epi16(v_absd_w, v_zero);
+  const __m128i v_mhi_d = _mm_unpackhi_epi16(v_m_w, v_zero);
+  const __m128i v_ehi_d = _mm_madd_epi16(v_dhi_d, v_mhi_d);
+  // Square and sum the errors -> 36bits * 4 = 38bits
+  __m128i v_se0_q, v_se1_q, v_se2_q, v_se3_q, v_se_q, v_elo1_d, v_ehi3_d;
+  v_se0_q = _mm_mul_epu32(v_elo_d, v_elo_d);
+  v_elo1_d = _mm_srli_si128(v_elo_d, 4);
+  v_se1_q = _mm_mul_epu32(v_elo1_d, v_elo1_d);
+  v_se0_q = _mm_add_epi64(v_se0_q, v_se1_q);
+  v_se2_q = _mm_mul_epu32(v_ehi_d, v_ehi_d);
+  v_ehi3_d = _mm_srli_si128(v_ehi_d, 4);
+  v_se3_q = _mm_mul_epu32(v_ehi3_d, v_ehi3_d);
+  v_se1_q = _mm_add_epi64(v_se2_q, v_se3_q);
+  v_se_q = _mm_add_epi64(v_se0_q, v_se1_q);
+
+  // Accumulate
+  *v_sum_d = _mm_add_epi32(*v_sum_d, v_e_d);
+  *v_sse_q = _mm_add_epi64(*v_sse_q, v_se_q);
+}
+
+static INLINE uint32_t highbd_10_calc_masked_variance(__m128i v_sum_d,
+                                                      __m128i v_sse_q,
+                                                      uint32_t *sse, int w,
+                                                      int h) {
+  int64_t sum64;
+  uint64_t sse64;
+
+  // Horizontal sum
+  sum64 = hsum_epi32_si32(v_sum_d);
+  sse64 = hsum_epi64_si64(v_sse_q);
+
+  sum64 = (sum64 >= 0) ? sum64 : -sum64;
+
+  // Round
+  sum64 = ROUND_POWER_OF_TWO(sum64, 6);
+  sse64 = ROUND_POWER_OF_TWO(sse64, 12);
+
+  // Normalise
+  sum64 = ROUND_POWER_OF_TWO(sum64, 2);
+  sse64 = ROUND_POWER_OF_TWO(sse64, 4);
+
+  // Store the SSE
+  *sse = (uint32_t)sse64;
+  // Compute the variance
+  return *sse - (uint32_t)((sum64 * sum64) / (w * h));
+}
+static INLINE uint32_t highbd_12_calc_masked_variance(__m128i v_sum_d,
+                                                      __m128i v_sse_q,
+                                                      uint32_t *sse, int w,
+                                                      int h) {
+  int64_t sum64;
+  uint64_t sse64;
+
+  // Horizontal sum
+  sum64 = hsum_epi32_si64(v_sum_d);
+  sse64 = hsum_epi64_si64(v_sse_q);
+
+  sum64 = (sum64 >= 0) ? sum64 : -sum64;
+
+  // Round
+  sum64 = ROUND_POWER_OF_TWO(sum64, 6);
+  sse64 = ROUND_POWER_OF_TWO(sse64, 12);
+
+  // Normalise
+  sum64 = ROUND_POWER_OF_TWO(sum64, 4);
+  sse64 = ROUND_POWER_OF_TWO(sse64, 8);
+
+  // Store the SSE
+  *sse = (uint32_t)sse64;
+  // Compute the variance
+  return *sse - (uint32_t)((sum64 * sum64) / (w * h));
+}
+
+// High bit depth functions for width (W) >= 8
+unsigned int aom_highbd_masked_subpel_varWxH_xzero(
+    const uint16_t *src, int src_stride, int yoffset, const uint16_t *dst,
+    int dst_stride, const uint8_t *msk, int msk_stride, unsigned int *sse,
+    int w, int h, highbd_filter_fn_t filter_fn,
+    highbd_calc_masked_var_t calc_var) {
+  int i, j;
+  __m128i v_src0_w, v_src1_w, v_res_w, v_dst_w, v_msk_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  const __m128i v_filter_w =
+      _mm_set1_epi32((bilinear_filters_2t[yoffset][1] << 16) +
+                     bilinear_filters_2t[yoffset][0]);
+  assert(yoffset < BIL_SUBPEL_SHIFTS);
+  for (j = 0; j < w; j += 8) {
+    // Load the first row ready
+    v_src0_w = _mm_loadu_si128((const __m128i *)(src + j));
+    // Process 2 rows at a time
+    for (i = 0; i < h; i += 2) {
+      // Load the next row apply the filter
+      v_src1_w = _mm_loadu_si128((const __m128i *)(src + j + src_stride));
+      v_res_w = filter_fn(v_src0_w, v_src1_w, v_filter_w);
+      // Load the dst and msk for the variance calculation
+      v_dst_w = _mm_loadu_si128((const __m128i *)(dst + j));
+      v_msk_b = _mm_loadl_epi64((const __m128i *)(msk + j));
+      highbd_sum_and_sse(v_res_w, v_dst_w, v_msk_b, &v_sum_d, &v_sse_q);
+
+      // Load the next row apply the filter
+      v_src0_w = _mm_loadu_si128((const __m128i *)(src + j + src_stride * 2));
+      v_res_w = filter_fn(v_src1_w, v_src0_w, v_filter_w);
+      // Load the dst and msk for the variance calculation
+      v_dst_w = _mm_loadu_si128((const __m128i *)(dst + j + dst_stride));
+      v_msk_b = _mm_loadl_epi64((const __m128i *)(msk + j + msk_stride));
+      highbd_sum_and_sse(v_res_w, v_dst_w, v_msk_b, &v_sum_d, &v_sse_q);
+      // Move onto the next block of rows
+      src += src_stride * 2;
+      dst += dst_stride * 2;
+      msk += msk_stride * 2;
+    }
+    // Reset to the top of the block
+    src -= src_stride * h;
+    dst -= dst_stride * h;
+    msk -= msk_stride * h;
+  }
+  return calc_var(v_sum_d, v_sse_q, sse, w, h);
+}
+unsigned int aom_highbd_masked_subpel_varWxH_yzero(
+    const uint16_t *src, int src_stride, int xoffset, const uint16_t *dst,
+    int dst_stride, const uint8_t *msk, int msk_stride, unsigned int *sse,
+    int w, int h, highbd_filter_fn_t filter_fn,
+    highbd_calc_masked_var_t calc_var) {
+  int i, j;
+  __m128i v_src0_w, v_src1_w, v_res_w, v_dst_w, v_msk_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  const __m128i v_filter_w =
+      _mm_set1_epi32((bilinear_filters_2t[xoffset][1] << 16) +
+                     bilinear_filters_2t[xoffset][0]);
+  assert(xoffset < BIL_SUBPEL_SHIFTS);
+  for (i = 0; i < h; i++) {
+    for (j = 0; j < w; j += 8) {
+      // Load this row & apply the filter to them
+      v_src0_w = _mm_loadu_si128((const __m128i *)(src + j));
+      v_src1_w = _mm_loadu_si128((const __m128i *)(src + j + 1));
+      v_res_w = filter_fn(v_src0_w, v_src1_w, v_filter_w);
+
+      // Load the dst and msk for the variance calculation
+      v_dst_w = _mm_loadu_si128((const __m128i *)(dst + j));
+      v_msk_b = _mm_loadl_epi64((const __m128i *)(msk + j));
+      highbd_sum_and_sse(v_res_w, v_dst_w, v_msk_b, &v_sum_d, &v_sse_q);
+    }
+    src += src_stride;
+    dst += dst_stride;
+    msk += msk_stride;
+  }
+  return calc_var(v_sum_d, v_sse_q, sse, w, h);
+}
+
+unsigned int aom_highbd_masked_subpel_varWxH_xnonzero_ynonzero(
+    const uint16_t *src, int src_stride, int xoffset, int yoffset,
+    const uint16_t *dst, int dst_stride, const uint8_t *msk, int msk_stride,
+    unsigned int *sse, int w, int h, highbd_filter_fn_t xfilter_fn,
+    highbd_filter_fn_t yfilter_fn, highbd_calc_masked_var_t calc_var) {
+  int i, j;
+  __m128i v_src0_w, v_src1_w, v_src2_w, v_src3_w;
+  __m128i v_filtered0_w, v_filtered1_w, v_res_w, v_dst_w, v_msk_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  const __m128i v_filterx_w =
+      _mm_set1_epi32((bilinear_filters_2t[xoffset][1] << 16) +
+                     bilinear_filters_2t[xoffset][0]);
+  const __m128i v_filtery_w =
+      _mm_set1_epi32((bilinear_filters_2t[yoffset][1] << 16) +
+                     bilinear_filters_2t[yoffset][0]);
+  assert(xoffset < BIL_SUBPEL_SHIFTS);
+  assert(yoffset < BIL_SUBPEL_SHIFTS);
+  for (j = 0; j < w; j += 8) {
+    // Load the first row ready
+    v_src0_w = _mm_loadu_si128((const __m128i *)(src + j));
+    v_src1_w = _mm_loadu_si128((const __m128i *)(src + j + 1));
+    v_filtered0_w = xfilter_fn(v_src0_w, v_src1_w, v_filterx_w);
+    // Process 2 rows at a time
+    for (i = 0; i < h; i += 2) {
+      // Load the next row & apply the filter
+      v_src2_w = _mm_loadu_si128((const __m128i *)(src + src_stride + j));
+      v_src3_w = _mm_loadu_si128((const __m128i *)(src + src_stride + j + 1));
+      v_filtered1_w = xfilter_fn(v_src2_w, v_src3_w, v_filterx_w);
+      // Load the dst and msk for the variance calculation
+      v_dst_w = _mm_loadu_si128((const __m128i *)(dst + j));
+      v_msk_b = _mm_loadl_epi64((const __m128i *)(msk + j));
+      // Complete the calculation for this row and add it to the running total
+      v_res_w = yfilter_fn(v_filtered0_w, v_filtered1_w, v_filtery_w);
+      highbd_sum_and_sse(v_res_w, v_dst_w, v_msk_b, &v_sum_d, &v_sse_q);
+
+      // Load the next row & apply the filter
+      v_src0_w = _mm_loadu_si128((const __m128i *)(src + src_stride * 2 + j));
+      v_src1_w =
+          _mm_loadu_si128((const __m128i *)(src + src_stride * 2 + j + 1));
+      v_filtered0_w = xfilter_fn(v_src0_w, v_src1_w, v_filterx_w);
+      // Load the dst and msk for the variance calculation
+      v_dst_w = _mm_loadu_si128((const __m128i *)(dst + dst_stride + j));
+      v_msk_b = _mm_loadl_epi64((const __m128i *)(msk + msk_stride + j));
+      // Complete the calculation for this row and add it to the running total
+      v_res_w = yfilter_fn(v_filtered1_w, v_filtered0_w, v_filtery_w);
+      highbd_sum_and_sse(v_res_w, v_dst_w, v_msk_b, &v_sum_d, &v_sse_q);
+      // Move onto the next block of rows
+      src += src_stride * 2;
+      dst += dst_stride * 2;
+      msk += msk_stride * 2;
+    }
+    // Reset to the top of the block
+    src -= src_stride * h;
+    dst -= dst_stride * h;
+    msk -= msk_stride * h;
+  }
+  return calc_var(v_sum_d, v_sse_q, sse, w, h);
+}
+
+// Note order in which rows loaded xmm[127:64] = row 1, xmm[63:0] = row 2
+unsigned int aom_highbd_masked_subpel_var4xH_xzero(
+    const uint16_t *src, int src_stride, int yoffset, const uint16_t *dst,
+    int dst_stride, const uint8_t *msk, int msk_stride, unsigned int *sse,
+    int h, highbd_calc_masked_var_t calc_var) {
+  int i;
+  __m128i v_src0_w, v_src1_w, v_filtered0_d, v_filtered1_d, v_res_w;
+  __m128i v_dst_w, v_msk_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  __m128i v_filter_w = _mm_set1_epi32((bilinear_filters_2t[yoffset][1] << 16) +
+                                      bilinear_filters_2t[yoffset][0]);
+  assert(yoffset < BIL_SUBPEL_SHIFTS);
+  // Load the first row of src data ready
+  v_src0_w = _mm_loadl_epi64((const __m128i *)src);
+  for (i = 0; i < h; i += 2) {
+    if (yoffset == HALF_PIXEL_OFFSET) {
+      // Load the rest of the source data for these rows
+      v_src1_w = _mm_or_si128(
+          _mm_slli_si128(v_src0_w, 8),
+          _mm_loadl_epi64((const __m128i *)(src + src_stride * 1)));
+      v_src0_w = _mm_or_si128(
+          _mm_slli_si128(v_src1_w, 8),
+          _mm_loadl_epi64((const __m128i *)(src + src_stride * 2)));
+      // Apply the y filter
+      v_res_w = _mm_avg_epu16(v_src1_w, v_src0_w);
+    } else {
+      // Load the data and apply the y filter
+      v_src1_w = _mm_loadl_epi64((const __m128i *)(src + src_stride * 1));
+      highbd_apply_filter_lo(v_src0_w, v_src1_w, v_filter_w, &v_filtered0_d);
+      v_src0_w = _mm_loadl_epi64((const __m128i *)(src + src_stride * 2));
+      highbd_apply_filter_lo(v_src1_w, v_src0_w, v_filter_w, &v_filtered1_d);
+      v_res_w = _mm_packs_epi32(v_filtered1_d, v_filtered0_d);
+    }
+    // Load the dst data
+    v_dst_w = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 1)),
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 0)));
+    // Load the mask data
+    v_msk_b = _mm_unpacklo_epi32(
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 1)),
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 0)));
+    // Compute the sum and SSE
+    highbd_sum_and_sse(v_res_w, v_dst_w, v_msk_b, &v_sum_d, &v_sse_q);
+    // Move onto the next set of rows
+    src += src_stride * 2;
+    dst += dst_stride * 2;
+    msk += msk_stride * 2;
+  }
+  return calc_var(v_sum_d, v_sse_q, sse, 4, h);
+}
+
+unsigned int aom_highbd_masked_subpel_var4xH_yzero(
+    const uint16_t *src, int src_stride, int xoffset, const uint16_t *dst,
+    int dst_stride, const uint8_t *msk, int msk_stride, unsigned int *sse,
+    int h, highbd_calc_masked_var_t calc_var) {
+  int i;
+  __m128i v_src0_w, v_src1_w, v_filtered0_d, v_filtered1_d;
+  __m128i v_src0_shift_w, v_src1_shift_w, v_res_w, v_dst_w, v_msk_b;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  __m128i v_filter_w = _mm_set1_epi32((bilinear_filters_2t[xoffset][1] << 16) +
+                                      bilinear_filters_2t[xoffset][0]);
+  assert(xoffset < BIL_SUBPEL_SHIFTS);
+  for (i = 0; i < h; i += 2) {
+    // Load the src data
+    v_src0_w = _mm_loadu_si128((const __m128i *)(src));
+    v_src0_shift_w = _mm_srli_si128(v_src0_w, 2);
+    v_src1_w = _mm_loadu_si128((const __m128i *)(src + src_stride));
+    v_src1_shift_w = _mm_srli_si128(v_src1_w, 2);
+    // Apply the x filter
+    if (xoffset == HALF_PIXEL_OFFSET) {
+      v_src1_w = _mm_unpacklo_epi64(v_src0_w, v_src1_w);
+      v_src1_shift_w = _mm_unpacklo_epi64(v_src0_shift_w, v_src1_shift_w);
+      v_res_w = _mm_avg_epu16(v_src1_w, v_src1_shift_w);
+    } else {
+      highbd_apply_filter_lo(v_src0_w, v_src0_shift_w, v_filter_w,
+                             &v_filtered0_d);
+      highbd_apply_filter_lo(v_src1_w, v_src1_shift_w, v_filter_w,
+                             &v_filtered1_d);
+      v_res_w = _mm_packs_epi32(v_filtered0_d, v_filtered1_d);
+    }
+    // Load the dst data
+    v_dst_w = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 0)),
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 1)));
+    // Load the mask data
+    v_msk_b = _mm_unpacklo_epi32(
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 0)),
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 1)));
+    // Compute the sum and SSE
+    highbd_sum_and_sse(v_res_w, v_dst_w, v_msk_b, &v_sum_d, &v_sse_q);
+    // Move onto the next set of rows
+    src += src_stride * 2;
+    dst += dst_stride * 2;
+    msk += msk_stride * 2;
+  }
+  return calc_var(v_sum_d, v_sse_q, sse, 4, h);
+}
+
+unsigned int aom_highbd_masked_subpel_var4xH_xnonzero_ynonzero(
+    const uint16_t *src, int src_stride, int xoffset, int yoffset,
+    const uint16_t *dst, int dst_stride, const uint8_t *msk, int msk_stride,
+    unsigned int *sse, int h, highbd_calc_masked_var_t calc_var) {
+  int i;
+  __m128i v_src0_w, v_src1_w, v_filtered0_d, v_filtered1_d, v_dst_w, v_msk_b;
+  __m128i v_src0_shift_w, v_src1_shift_w;
+  __m128i v_xres0_w, v_xres1_w, v_res_w, v_temp_w;
+  __m128i v_sum_d = _mm_setzero_si128();
+  __m128i v_sse_q = _mm_setzero_si128();
+  __m128i v_filterx_w = _mm_set1_epi32((bilinear_filters_2t[xoffset][1] << 16) +
+                                       bilinear_filters_2t[xoffset][0]);
+  __m128i v_filtery_w = _mm_set1_epi32((bilinear_filters_2t[yoffset][1] << 16) +
+                                       bilinear_filters_2t[yoffset][0]);
+  assert(xoffset < BIL_SUBPEL_SHIFTS);
+  assert(yoffset < BIL_SUBPEL_SHIFTS);
+  // Load the first block of src data
+  v_src0_w = _mm_loadu_si128((const __m128i *)(src));
+  v_src0_shift_w = _mm_srli_si128(v_src0_w, 2);
+  v_src1_w = _mm_loadu_si128((const __m128i *)(src + src_stride));
+  v_src1_shift_w = _mm_srli_si128(v_src1_w, 2);
+  // Apply the x filter
+  if (xoffset == HALF_PIXEL_OFFSET) {
+    v_src1_w = _mm_unpacklo_epi64(v_src0_w, v_src1_w);
+    v_src1_shift_w = _mm_unpacklo_epi64(v_src0_shift_w, v_src1_shift_w);
+    v_xres0_w = _mm_avg_epu16(v_src1_w, v_src1_shift_w);
+  } else {
+    highbd_apply_filter_lo(v_src0_w, v_src0_shift_w, v_filterx_w,
+                           &v_filtered0_d);
+    highbd_apply_filter_lo(v_src1_w, v_src1_shift_w, v_filterx_w,
+                           &v_filtered1_d);
+    v_xres0_w = _mm_packs_epi32(v_filtered0_d, v_filtered1_d);
+  }
+  for (i = 0; i < h; i += 4) {
+    // Load the next block of src data
+    v_src0_w = _mm_loadu_si128((const __m128i *)(src + src_stride * 2));
+    v_src0_shift_w = _mm_srli_si128(v_src0_w, 2);
+    v_src1_w = _mm_loadu_si128((const __m128i *)(src + src_stride * 3));
+    v_src1_shift_w = _mm_srli_si128(v_src1_w, 2);
+    // Apply the x filter
+    if (xoffset == HALF_PIXEL_OFFSET) {
+      v_src1_w = _mm_unpacklo_epi64(v_src0_w, v_src1_w);
+      v_src1_shift_w = _mm_unpacklo_epi64(v_src0_shift_w, v_src1_shift_w);
+      v_xres1_w = _mm_avg_epu16(v_src1_w, v_src1_shift_w);
+    } else {
+      highbd_apply_filter_lo(v_src0_w, v_src0_shift_w, v_filterx_w,
+                             &v_filtered0_d);
+      highbd_apply_filter_lo(v_src1_w, v_src1_shift_w, v_filterx_w,
+                             &v_filtered1_d);
+      v_xres1_w = _mm_packs_epi32(v_filtered0_d, v_filtered1_d);
+    }
+    // Apply the y filter to the previous block
+    v_temp_w = _mm_or_si128(_mm_srli_si128(v_xres0_w, 8),
+                            _mm_slli_si128(v_xres1_w, 8));
+    if (yoffset == HALF_PIXEL_OFFSET) {
+      v_res_w = _mm_avg_epu16(v_xres0_w, v_temp_w);
+    } else {
+      v_res_w = highbd_apply_filter(v_xres0_w, v_temp_w, v_filtery_w);
+    }
+    // Load the dst data
+    v_dst_w = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 0)),
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 1)));
+    // Load the mask data
+    v_msk_b = _mm_unpacklo_epi32(
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 0)),
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 1)));
+    // Compute the sum and SSE
+    highbd_sum_and_sse(v_res_w, v_dst_w, v_msk_b, &v_sum_d, &v_sse_q);
+
+    // Load the next block of src data
+    v_src0_w = _mm_loadu_si128((const __m128i *)(src + src_stride * 4));
+    v_src0_shift_w = _mm_srli_si128(v_src0_w, 2);
+    v_src1_w = _mm_loadu_si128((const __m128i *)(src + src_stride * 5));
+    v_src1_shift_w = _mm_srli_si128(v_src1_w, 2);
+    // Apply the x filter
+    if (xoffset == HALF_PIXEL_OFFSET) {
+      v_src1_w = _mm_unpacklo_epi64(v_src0_w, v_src1_w);
+      v_src1_shift_w = _mm_unpacklo_epi64(v_src0_shift_w, v_src1_shift_w);
+      v_xres0_w = _mm_avg_epu16(v_src1_w, v_src1_shift_w);
+    } else {
+      highbd_apply_filter_lo(v_src0_w, v_src0_shift_w, v_filterx_w,
+                             &v_filtered0_d);
+      highbd_apply_filter_lo(v_src1_w, v_src1_shift_w, v_filterx_w,
+                             &v_filtered1_d);
+      v_xres0_w = _mm_packs_epi32(v_filtered0_d, v_filtered1_d);
+    }
+    // Apply the y filter to the previous block
+    v_temp_w = _mm_or_si128(_mm_srli_si128(v_xres1_w, 8),
+                            _mm_slli_si128(v_xres0_w, 8));
+    if (yoffset == HALF_PIXEL_OFFSET) {
+      v_res_w = _mm_avg_epu16(v_xres1_w, v_temp_w);
+    } else {
+      v_res_w = highbd_apply_filter(v_xres1_w, v_temp_w, v_filtery_w);
+    }
+    // Load the dst data
+    v_dst_w = _mm_unpacklo_epi64(
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 2)),
+        _mm_loadl_epi64((const __m128i *)(dst + dst_stride * 3)));
+    // Load the mask data
+    v_msk_b = _mm_unpacklo_epi32(
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 2)),
+        _mm_loadl_epi64((const __m128i *)(msk + msk_stride * 3)));
+    // Compute the sum and SSE
+    highbd_sum_and_sse(v_res_w, v_dst_w, v_msk_b, &v_sum_d, &v_sse_q);
+    // Move onto the next set of rows
+    src += src_stride * 4;
+    dst += dst_stride * 4;
+    msk += msk_stride * 4;
+  }
+  return calc_var(v_sum_d, v_sse_q, sse, 4, h);
+}
+
+// For W >=8
+#define HIGHBD_MASK_SUBPIX_VAR_LARGE(W, H)                                     \
+  unsigned int highbd_masked_sub_pixel_variance##W##x##H##_ssse3(              \
+      const uint8_t *src8, int src_stride, int xoffset, int yoffset,           \
+      const uint8_t *dst8, int dst_stride, const uint8_t *msk, int msk_stride, \
+      unsigned int *sse, highbd_calc_masked_var_t calc_var,                    \
+      highbd_variance_fn_t full_variance_function) {                           \
+    uint16_t *src = CONVERT_TO_SHORTPTR(src8);                                 \
+    uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);                                 \
+    assert(W % 8 == 0);                                                        \
+    if (xoffset == 0) {                                                        \
+      if (yoffset == 0)                                                        \
+        return full_variance_function(src8, src_stride, dst8, dst_stride, msk, \
+                                      msk_stride, sse);                        \
+      else if (yoffset == HALF_PIXEL_OFFSET)                                   \
+        return aom_highbd_masked_subpel_varWxH_xzero(                          \
+            src, src_stride, HALF_PIXEL_OFFSET, dst, dst_stride, msk,          \
+            msk_stride, sse, W, H, highbd_apply_filter_avg, calc_var);         \
+      else                                                                     \
+        return aom_highbd_masked_subpel_varWxH_xzero(                          \
+            src, src_stride, yoffset, dst, dst_stride, msk, msk_stride, sse,   \
+            W, H, highbd_apply_filter, calc_var);                              \
+    } else if (yoffset == 0) {                                                 \
+      if (xoffset == HALF_PIXEL_OFFSET)                                        \
+        return aom_highbd_masked_subpel_varWxH_yzero(                          \
+            src, src_stride, HALF_PIXEL_OFFSET, dst, dst_stride, msk,          \
+            msk_stride, sse, W, H, highbd_apply_filter_avg, calc_var);         \
+      else                                                                     \
+        return aom_highbd_masked_subpel_varWxH_yzero(                          \
+            src, src_stride, xoffset, dst, dst_stride, msk, msk_stride, sse,   \
+            W, H, highbd_apply_filter, calc_var);                              \
+    } else if (xoffset == HALF_PIXEL_OFFSET) {                                 \
+      if (yoffset == HALF_PIXEL_OFFSET)                                        \
+        return aom_highbd_masked_subpel_varWxH_xnonzero_ynonzero(              \
+            src, src_stride, HALF_PIXEL_OFFSET, HALF_PIXEL_OFFSET, dst,        \
+            dst_stride, msk, msk_stride, sse, W, H, highbd_apply_filter_avg,   \
+            highbd_apply_filter_avg, calc_var);                                \
+      else                                                                     \
+        return aom_highbd_masked_subpel_varWxH_xnonzero_ynonzero(              \
+            src, src_stride, HALF_PIXEL_OFFSET, yoffset, dst, dst_stride, msk, \
+            msk_stride, sse, W, H, highbd_apply_filter_avg,                    \
+            highbd_apply_filter, calc_var);                                    \
+    } else {                                                                   \
+      if (yoffset == HALF_PIXEL_OFFSET)                                        \
+        return aom_highbd_masked_subpel_varWxH_xnonzero_ynonzero(              \
+            src, src_stride, xoffset, HALF_PIXEL_OFFSET, dst, dst_stride, msk, \
+            msk_stride, sse, W, H, highbd_apply_filter,                        \
+            highbd_apply_filter_avg, calc_var);                                \
+      else                                                                     \
+        return aom_highbd_masked_subpel_varWxH_xnonzero_ynonzero(              \
+            src, src_stride, xoffset, yoffset, dst, dst_stride, msk,           \
+            msk_stride, sse, W, H, highbd_apply_filter, highbd_apply_filter,   \
+            calc_var);                                                         \
+    }                                                                          \
+  }
+
+// For W < 8
+#define HIGHBD_MASK_SUBPIX_VAR_SMALL(W, H)                                     \
+  unsigned int highbd_masked_sub_pixel_variance##W##x##H##_ssse3(              \
+      const uint8_t *src8, int src_stride, int xoffset, int yoffset,           \
+      const uint8_t *dst8, int dst_stride, const uint8_t *msk, int msk_stride, \
+      unsigned int *sse, highbd_calc_masked_var_t calc_var,                    \
+      highbd_variance_fn_t full_variance_function) {                           \
+    uint16_t *src = CONVERT_TO_SHORTPTR(src8);                                 \
+    uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);                                 \
+    assert(W == 4);                                                            \
+    if (xoffset == 0 && yoffset == 0)                                          \
+      return full_variance_function(src8, src_stride, dst8, dst_stride, msk,   \
+                                    msk_stride, sse);                          \
+    else if (xoffset == 0)                                                     \
+      return aom_highbd_masked_subpel_var4xH_xzero(                            \
+          src, src_stride, yoffset, dst, dst_stride, msk, msk_stride, sse, H,  \
+          calc_var);                                                           \
+    else if (yoffset == 0)                                                     \
+      return aom_highbd_masked_subpel_var4xH_yzero(                            \
+          src, src_stride, xoffset, dst, dst_stride, msk, msk_stride, sse, H,  \
+          calc_var);                                                           \
+    else                                                                       \
+      return aom_highbd_masked_subpel_var4xH_xnonzero_ynonzero(                \
+          src, src_stride, xoffset, yoffset, dst, dst_stride, msk, msk_stride, \
+          sse, H, calc_var);                                                   \
+  }
+
+#define HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(W, H)                                  \
+  unsigned int aom_highbd_masked_sub_pixel_variance##W##x##H##_ssse3(          \
+      const uint8_t *src8, int src_stride, int xoffset, int yoffset,           \
+      const uint8_t *dst8, int dst_stride, const uint8_t *msk, int msk_stride, \
+      unsigned int *sse) {                                                     \
+    return highbd_masked_sub_pixel_variance##W##x##H##_ssse3(                  \
+        src8, src_stride, xoffset, yoffset, dst8, dst_stride, msk, msk_stride, \
+        sse, calc_masked_variance,                                             \
+        aom_highbd_masked_variance##W##x##H##_ssse3);                          \
+  }                                                                            \
+  unsigned int aom_highbd_10_masked_sub_pixel_variance##W##x##H##_ssse3(       \
+      const uint8_t *src8, int src_stride, int xoffset, int yoffset,           \
+      const uint8_t *dst8, int dst_stride, const uint8_t *msk, int msk_stride, \
+      unsigned int *sse) {                                                     \
+    return highbd_masked_sub_pixel_variance##W##x##H##_ssse3(                  \
+        src8, src_stride, xoffset, yoffset, dst8, dst_stride, msk, msk_stride, \
+        sse, highbd_10_calc_masked_variance,                                   \
+        aom_highbd_10_masked_variance##W##x##H##_ssse3);                       \
+  }                                                                            \
+  unsigned int aom_highbd_12_masked_sub_pixel_variance##W##x##H##_ssse3(       \
+      const uint8_t *src8, int src_stride, int xoffset, int yoffset,           \
+      const uint8_t *dst8, int dst_stride, const uint8_t *msk, int msk_stride, \
+      unsigned int *sse) {                                                     \
+    return highbd_masked_sub_pixel_variance##W##x##H##_ssse3(                  \
+        src8, src_stride, xoffset, yoffset, dst8, dst_stride, msk, msk_stride, \
+        sse, highbd_12_calc_masked_variance,                                   \
+        aom_highbd_12_masked_variance##W##x##H##_ssse3);                       \
+  }
+
+HIGHBD_MASK_SUBPIX_VAR_SMALL(4, 4)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(4, 4)
+HIGHBD_MASK_SUBPIX_VAR_SMALL(4, 8)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(4, 8)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(8, 4)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(8, 4)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(8, 8)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(8, 8)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(8, 16)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(8, 16)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(16, 8)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(16, 8)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(16, 16)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(16, 16)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(16, 32)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(16, 32)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(32, 16)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(32, 16)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(32, 32)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(32, 32)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(32, 64)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(32, 64)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(64, 32)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(64, 32)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(64, 64)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(64, 64)
+#if CONFIG_EXT_PARTITION
+HIGHBD_MASK_SUBPIX_VAR_LARGE(64, 128)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(64, 128)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(128, 64)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(128, 64)
+HIGHBD_MASK_SUBPIX_VAR_LARGE(128, 128)
+HIGHBD_MASK_SUBPIX_VAR_WRAPPERS(128, 128)
+#endif  // CONFIG_EXT_PARTITION
+#endif