ref: 4cae64c32c65a70e7c7d228f885cfc4bce0d5c41
parent: a2ef180dd021ce591f214d13f4c14cbe5fe4972b
author: Scott LaVarnway <slavarnway@google.com>
date: Wed Sep 20 01:21:23 EDT 2017
vpxdsp: [x86] add highbd_d117_predictor functions C vs SSE2 speed gains: _4x4 : ~2.04x C vs SSSE3 speed gains: _8x8 : ~2.82x _16x16 : ~5.93x _32x32 : ~2.79x BUG=webm:1411 Change-Id: I31d949695991c067dac89d91e0bed3e666c94993
--- a/test/test_intra_pred_speed.cc
+++ b/test/test_intra_pred_speed.cc
@@ -484,9 +484,10 @@
SSE2, TestHighbdIntraPred4, vpx_highbd_dc_predictor_4x4_sse2,
vpx_highbd_dc_left_predictor_4x4_sse2, vpx_highbd_dc_top_predictor_4x4_sse2,
vpx_highbd_dc_128_predictor_4x4_sse2, vpx_highbd_v_predictor_4x4_sse2,
- vpx_highbd_h_predictor_4x4_sse2, NULL, NULL, NULL,
- vpx_highbd_d153_predictor_4x4_sse2, vpx_highbd_d207_predictor_4x4_sse2,
- vpx_highbd_d63_predictor_4x4_sse2, vpx_highbd_tm_predictor_4x4_c)
+ vpx_highbd_h_predictor_4x4_sse2, NULL, NULL,
+ vpx_highbd_d117_predictor_4x4_sse2, vpx_highbd_d153_predictor_4x4_sse2,
+ vpx_highbd_d207_predictor_4x4_sse2, vpx_highbd_d63_predictor_4x4_sse2,
+ vpx_highbd_tm_predictor_4x4_c)
HIGHBD_INTRA_PRED_TEST(SSE2, TestHighbdIntraPred8,
vpx_highbd_dc_predictor_8x8_sse2,
@@ -522,17 +523,20 @@
NULL, NULL, NULL, NULL, NULL)
HIGHBD_INTRA_PRED_TEST(SSSE3, TestHighbdIntraPred8, NULL, NULL, NULL, NULL,
NULL, NULL, vpx_highbd_d45_predictor_8x8_ssse3, NULL,
- NULL, vpx_highbd_d153_predictor_8x8_ssse3,
+ vpx_highbd_d117_predictor_8x8_ssse3,
+ vpx_highbd_d153_predictor_8x8_ssse3,
vpx_highbd_d207_predictor_8x8_ssse3,
vpx_highbd_d63_predictor_8x8_ssse3, NULL)
HIGHBD_INTRA_PRED_TEST(SSSE3, TestHighbdIntraPred16, NULL, NULL, NULL, NULL,
NULL, NULL, vpx_highbd_d45_predictor_16x16_ssse3, NULL,
- NULL, vpx_highbd_d153_predictor_16x16_ssse3,
+ vpx_highbd_d117_predictor_16x16_ssse3,
+ vpx_highbd_d153_predictor_16x16_ssse3,
vpx_highbd_d207_predictor_16x16_ssse3,
vpx_highbd_d63_predictor_16x16_ssse3, NULL)
HIGHBD_INTRA_PRED_TEST(SSSE3, TestHighbdIntraPred32, NULL, NULL, NULL, NULL,
NULL, NULL, vpx_highbd_d45_predictor_32x32_ssse3, NULL,
- NULL, vpx_highbd_d153_predictor_32x32_ssse3,
+ vpx_highbd_d117_predictor_32x32_ssse3,
+ vpx_highbd_d153_predictor_32x32_ssse3,
vpx_highbd_d207_predictor_32x32_ssse3,
vpx_highbd_d63_predictor_32x32_ssse3, NULL)
#endif // HAVE_SSSE3
--- a/test/vp9_intrapred_test.cc
+++ b/test/vp9_intrapred_test.cc
@@ -485,6 +485,12 @@
&vpx_highbd_d63_predictor_16x16_c, 16, 8),
HighbdIntraPredParam(&vpx_highbd_d63_predictor_32x32_c,
&vpx_highbd_d63_predictor_32x32_ssse3, 32, 8),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_8x8_ssse3,
+ &vpx_highbd_d117_predictor_8x8_c, 8, 8),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_16x16_ssse3,
+ &vpx_highbd_d117_predictor_16x16_c, 16, 8),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_32x32_c,
+ &vpx_highbd_d117_predictor_32x32_ssse3, 32, 8),
HighbdIntraPredParam(&vpx_highbd_d153_predictor_8x8_ssse3,
&vpx_highbd_d153_predictor_8x8_c, 8, 8),
HighbdIntraPredParam(&vpx_highbd_d153_predictor_16x16_ssse3,
@@ -515,6 +521,12 @@
&vpx_highbd_d63_predictor_16x16_c, 16, 10),
HighbdIntraPredParam(&vpx_highbd_d63_predictor_32x32_c,
&vpx_highbd_d63_predictor_32x32_ssse3, 32, 10),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_8x8_ssse3,
+ &vpx_highbd_d117_predictor_8x8_c, 8, 10),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_16x16_ssse3,
+ &vpx_highbd_d117_predictor_16x16_c, 16, 10),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_32x32_c,
+ &vpx_highbd_d117_predictor_32x32_ssse3, 32, 10),
HighbdIntraPredParam(&vpx_highbd_d153_predictor_8x8_ssse3,
&vpx_highbd_d153_predictor_8x8_c, 8, 10),
HighbdIntraPredParam(&vpx_highbd_d153_predictor_16x16_ssse3,
@@ -545,6 +557,12 @@
&vpx_highbd_d63_predictor_16x16_c, 16, 12),
HighbdIntraPredParam(&vpx_highbd_d63_predictor_32x32_c,
&vpx_highbd_d63_predictor_32x32_ssse3, 32, 12),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_8x8_ssse3,
+ &vpx_highbd_d117_predictor_8x8_c, 8, 12),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_16x16_ssse3,
+ &vpx_highbd_d117_predictor_16x16_c, 16, 12),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_32x32_c,
+ &vpx_highbd_d117_predictor_32x32_ssse3, 32, 12),
HighbdIntraPredParam(&vpx_highbd_d153_predictor_8x8_ssse3,
&vpx_highbd_d153_predictor_8x8_c, 8, 12),
HighbdIntraPredParam(&vpx_highbd_d153_predictor_16x16_ssse3,
@@ -573,6 +591,8 @@
&vpx_highbd_dc_128_predictor_32x32_c, 32, 8),
HighbdIntraPredParam(&vpx_highbd_d63_predictor_4x4_sse2,
&vpx_highbd_d63_predictor_4x4_c, 4, 8),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_4x4_sse2,
+ &vpx_highbd_d117_predictor_4x4_c, 4, 8),
HighbdIntraPredParam(&vpx_highbd_d153_predictor_4x4_sse2,
&vpx_highbd_d153_predictor_4x4_c, 4, 8),
HighbdIntraPredParam(&vpx_highbd_d207_predictor_4x4_sse2,
@@ -639,6 +659,8 @@
&vpx_highbd_dc_128_predictor_32x32_c, 32, 10),
HighbdIntraPredParam(&vpx_highbd_d63_predictor_4x4_sse2,
&vpx_highbd_d63_predictor_4x4_c, 4, 10),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_4x4_sse2,
+ &vpx_highbd_d117_predictor_4x4_c, 4, 10),
HighbdIntraPredParam(&vpx_highbd_d153_predictor_4x4_sse2,
&vpx_highbd_d153_predictor_4x4_c, 4, 10),
HighbdIntraPredParam(&vpx_highbd_d207_predictor_4x4_sse2,
@@ -705,6 +727,8 @@
&vpx_highbd_dc_128_predictor_32x32_c, 32, 12),
HighbdIntraPredParam(&vpx_highbd_d63_predictor_4x4_sse2,
&vpx_highbd_d63_predictor_4x4_c, 4, 12),
+ HighbdIntraPredParam(&vpx_highbd_d117_predictor_4x4_sse2,
+ &vpx_highbd_d117_predictor_4x4_c, 4, 12),
HighbdIntraPredParam(&vpx_highbd_d153_predictor_4x4_sse2,
&vpx_highbd_d153_predictor_4x4_c, 4, 12),
HighbdIntraPredParam(&vpx_highbd_d207_predictor_4x4_sse2,
--- a/vpx_dsp/vpx_dsp_rtcd_defs.pl
+++ b/vpx_dsp/vpx_dsp_rtcd_defs.pl
@@ -201,6 +201,7 @@
specialize qw/vpx_highbd_h_predictor_4x4 neon sse2/;
add_proto qw/void vpx_highbd_d117_predictor_4x4/, "uint16_t *dst, ptrdiff_t y_stride, const uint16_t *above, const uint16_t *left, int bd";
+ specialize qw/vpx_highbd_d117_predictor_4x4 sse2/;
add_proto qw/void vpx_highbd_d135_predictor_4x4/, "uint16_t *dst, ptrdiff_t y_stride, const uint16_t *above, const uint16_t *left, int bd";
specialize qw/vpx_highbd_d135_predictor_4x4 neon/;
@@ -239,6 +240,7 @@
specialize qw/vpx_highbd_h_predictor_8x8 neon sse2/;
add_proto qw/void vpx_highbd_d117_predictor_8x8/, "uint16_t *dst, ptrdiff_t y_stride, const uint16_t *above, const uint16_t *left, int bd";
+ specialize qw/vpx_highbd_d117_predictor_8x8 ssse3/;
add_proto qw/void vpx_highbd_d135_predictor_8x8/, "uint16_t *dst, ptrdiff_t y_stride, const uint16_t *above, const uint16_t *left, int bd";
specialize qw/vpx_highbd_d135_predictor_8x8 neon/;
@@ -277,6 +279,7 @@
specialize qw/vpx_highbd_h_predictor_16x16 neon sse2/;
add_proto qw/void vpx_highbd_d117_predictor_16x16/, "uint16_t *dst, ptrdiff_t y_stride, const uint16_t *above, const uint16_t *left, int bd";
+ specialize qw/vpx_highbd_d117_predictor_16x16 ssse3/;
add_proto qw/void vpx_highbd_d135_predictor_16x16/, "uint16_t *dst, ptrdiff_t y_stride, const uint16_t *above, const uint16_t *left, int bd";
specialize qw/vpx_highbd_d135_predictor_16x16 neon/;
@@ -315,6 +318,7 @@
specialize qw/vpx_highbd_h_predictor_32x32 neon sse2/;
add_proto qw/void vpx_highbd_d117_predictor_32x32/, "uint16_t *dst, ptrdiff_t y_stride, const uint16_t *above, const uint16_t *left, int bd";
+ specialize qw/vpx_highbd_d117_predictor_32x32 ssse3/;
add_proto qw/void vpx_highbd_d135_predictor_32x32/, "uint16_t *dst, ptrdiff_t y_stride, const uint16_t *above, const uint16_t *left, int bd";
specialize qw/vpx_highbd_d135_predictor_32x32 neon/;
--- a/vpx_dsp/x86/highbd_intrapred_intrin_sse2.c
+++ b/vpx_dsp/x86/highbd_intrapred_intrin_sse2.c
@@ -393,6 +393,38 @@
return _mm_avg_epu16(b, *y);
}
+void vpx_highbd_d117_predictor_4x4_sse2(uint16_t *dst, ptrdiff_t stride,
+ const uint16_t *above,
+ const uint16_t *left, int bd) {+ const int I = left[0];
+ const int J = left[1];
+ const int K = left[2];
+ const __m128i XXXXABCD = _mm_loadu_si128((const __m128i *)(above - 4));
+ const __m128i KXXXABCD = _mm_insert_epi16(XXXXABCD, K, 0);
+ const __m128i KJXXABCD = _mm_insert_epi16(KXXXABCD, J, 1);
+ const __m128i KJIXABCD = _mm_insert_epi16(KJXXABCD, I, 2);
+ const __m128i JIXABCD0 = _mm_srli_si128(KJIXABCD, 2);
+ const __m128i IXABCD00 = _mm_srli_si128(KJIXABCD, 4);
+ const __m128i avg2 = _mm_avg_epu16(KJIXABCD, JIXABCD0);
+ const __m128i avg3 = avg3_epu16(&KJIXABCD, &JIXABCD0, &IXABCD00);
+ const __m128i row0 = _mm_srli_si128(avg2, 6);
+ const __m128i row1 = _mm_srli_si128(avg3, 4);
+ const __m128i row2 = _mm_srli_si128(avg2, 4);
+ const __m128i row3 = _mm_srli_si128(avg3, 2);
+ (void)bd;
+ _mm_storel_epi64((__m128i *)dst, row0);
+ dst += stride;
+ _mm_storel_epi64((__m128i *)dst, row1);
+ dst += stride;
+ _mm_storel_epi64((__m128i *)dst, row2);
+ dst += stride;
+ _mm_storel_epi64((__m128i *)dst, row3);
+
+ dst -= stride;
+ dst[0] = _mm_extract_epi16(avg3, 1);
+ dst[stride] = _mm_extract_epi16(avg3, 0);
+}
+
void vpx_highbd_d153_predictor_4x4_sse2(uint16_t *dst, ptrdiff_t stride,
const uint16_t *above,
const uint16_t *left, int bd) {--- a/vpx_dsp/x86/highbd_intrapred_intrin_ssse3.c
+++ b/vpx_dsp/x86/highbd_intrapred_intrin_ssse3.c
@@ -170,6 +170,166 @@
}
}
+DECLARE_ALIGNED(16, static const uint8_t, rotate_right_epu16[16]) = {+ 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0, 1
+};
+
+static INLINE __m128i rotr_epu16(__m128i *a, const __m128i *rotrw) {+ *a = _mm_shuffle_epi8(*a, *rotrw);
+ return *a;
+}
+
+void vpx_highbd_d117_predictor_8x8_ssse3(uint16_t *dst, ptrdiff_t stride,
+ const uint16_t *above,
+ const uint16_t *left, int bd) {+ const __m128i rotrw = _mm_load_si128((const __m128i *)rotate_right_epu16);
+ const __m128i XABCDEFG = _mm_loadu_si128((const __m128i *)(above - 1));
+ const __m128i ABCDEFGH = _mm_load_si128((const __m128i *)above);
+ const __m128i IJKLMNOP = _mm_load_si128((const __m128i *)left);
+ const __m128i IXABCDEF =
+ _mm_alignr_epi8(XABCDEFG, _mm_slli_si128(IJKLMNOP, 14), 14);
+ const __m128i avg3 = avg3_epu16(&ABCDEFGH, &XABCDEFG, &IXABCDEF);
+ const __m128i avg2 = _mm_avg_epu16(ABCDEFGH, XABCDEFG);
+ const __m128i XIJKLMNO =
+ _mm_alignr_epi8(IJKLMNOP, _mm_slli_si128(XABCDEFG, 14), 14);
+ const __m128i JKLMNOP0 = _mm_srli_si128(IJKLMNOP, 2);
+ __m128i avg3_left = avg3_epu16(&XIJKLMNO, &IJKLMNOP, &JKLMNOP0);
+ __m128i rowa = avg2;
+ __m128i rowb = avg3;
+ int i;
+ (void)bd;
+ for (i = 0; i < 8; i += 2) {+ _mm_store_si128((__m128i *)dst, rowa);
+ dst += stride;
+ _mm_store_si128((__m128i *)dst, rowb);
+ dst += stride;
+ rowa = _mm_alignr_epi8(rowa, rotr_epu16(&avg3_left, &rotrw), 14);
+ rowb = _mm_alignr_epi8(rowb, rotr_epu16(&avg3_left, &rotrw), 14);
+ }
+}
+
+void vpx_highbd_d117_predictor_16x16_ssse3(uint16_t *dst, ptrdiff_t stride,
+ const uint16_t *above,
+ const uint16_t *left, int bd) {+ const __m128i rotrw = _mm_load_si128((const __m128i *)rotate_right_epu16);
+ const __m128i B0 = _mm_loadu_si128((const __m128i *)(above - 1));
+ const __m128i A0 = _mm_load_si128((const __m128i *)above);
+ const __m128i B1 = _mm_loadu_si128((const __m128i *)(above + 7));
+ const __m128i A1 = _mm_load_si128((const __m128i *)(above + 8));
+ const __m128i avg2_0 = _mm_avg_epu16(A0, B0);
+ const __m128i avg2_1 = _mm_avg_epu16(A1, B1);
+ const __m128i L0 = _mm_load_si128((const __m128i *)left);
+ const __m128i L1 = _mm_load_si128((const __m128i *)(left + 8));
+ const __m128i C0 = _mm_alignr_epi8(B0, _mm_slli_si128(L0, 14), 14);
+ const __m128i C1 = _mm_alignr_epi8(B1, B0, 14);
+ const __m128i avg3_0 = avg3_epu16(&A0, &B0, &C0);
+ const __m128i avg3_1 = avg3_epu16(&A1, &B1, &C1);
+ const __m128i XL0 = _mm_alignr_epi8(L0, _mm_slli_si128(B0, 14), 14);
+ const __m128i XL1 = _mm_alignr_epi8(L1, L0, 14);
+ const __m128i L0_ = _mm_alignr_epi8(L1, L0, 2);
+ const __m128i L1_ = _mm_srli_si128(L1, 2);
+ __m128i rowa_0 = avg2_0;
+ __m128i rowa_1 = avg2_1;
+ __m128i rowb_0 = avg3_0;
+ __m128i rowb_1 = avg3_1;
+ __m128i avg3_left[2];
+ int i, j;
+ (void)bd;
+ avg3_left[0] = avg3_epu16(&XL0, &L0, &L0_);
+ avg3_left[1] = avg3_epu16(&XL1, &L1, &L1_);
+ for (i = 0; i < 2; ++i) {+ __m128i avg_left = avg3_left[i];
+ for (j = 0; j < 8; j += 2) {+ _mm_store_si128((__m128i *)dst, rowa_0);
+ _mm_store_si128((__m128i *)(dst + 8), rowa_1);
+ dst += stride;
+ _mm_store_si128((__m128i *)dst, rowb_0);
+ _mm_store_si128((__m128i *)(dst + 8), rowb_1);
+ dst += stride;
+ rowa_1 = _mm_alignr_epi8(rowa_1, rowa_0, 14);
+ rowa_0 = _mm_alignr_epi8(rowa_0, rotr_epu16(&avg_left, &rotrw), 14);
+ rowb_1 = _mm_alignr_epi8(rowb_1, rowb_0, 14);
+ rowb_0 = _mm_alignr_epi8(rowb_0, rotr_epu16(&avg_left, &rotrw), 14);
+ }
+ }
+}
+
+void vpx_highbd_d117_predictor_32x32_ssse3(uint16_t *dst, ptrdiff_t stride,
+ const uint16_t *above,
+ const uint16_t *left, int bd) {+ const __m128i rotrw = _mm_load_si128((const __m128i *)rotate_right_epu16);
+ const __m128i A0 = _mm_load_si128((const __m128i *)above);
+ const __m128i A1 = _mm_load_si128((const __m128i *)(above + 8));
+ const __m128i A2 = _mm_load_si128((const __m128i *)(above + 16));
+ const __m128i A3 = _mm_load_si128((const __m128i *)(above + 24));
+ const __m128i B0 = _mm_loadu_si128((const __m128i *)(above - 1));
+ const __m128i B1 = _mm_loadu_si128((const __m128i *)(above + 7));
+ const __m128i B2 = _mm_loadu_si128((const __m128i *)(above + 15));
+ const __m128i B3 = _mm_loadu_si128((const __m128i *)(above + 23));
+ const __m128i avg2_0 = _mm_avg_epu16(A0, B0);
+ const __m128i avg2_1 = _mm_avg_epu16(A1, B1);
+ const __m128i avg2_2 = _mm_avg_epu16(A2, B2);
+ const __m128i avg2_3 = _mm_avg_epu16(A3, B3);
+ const __m128i L0 = _mm_load_si128((const __m128i *)left);
+ const __m128i L1 = _mm_load_si128((const __m128i *)(left + 8));
+ const __m128i L2 = _mm_load_si128((const __m128i *)(left + 16));
+ const __m128i L3 = _mm_load_si128((const __m128i *)(left + 24));
+ const __m128i C0 = _mm_alignr_epi8(B0, _mm_slli_si128(L0, 14), 14);
+ const __m128i C1 = _mm_alignr_epi8(B1, B0, 14);
+ const __m128i C2 = _mm_alignr_epi8(B2, B1, 14);
+ const __m128i C3 = _mm_alignr_epi8(B3, B2, 14);
+ const __m128i avg3_0 = avg3_epu16(&A0, &B0, &C0);
+ const __m128i avg3_1 = avg3_epu16(&A1, &B1, &C1);
+ const __m128i avg3_2 = avg3_epu16(&A2, &B2, &C2);
+ const __m128i avg3_3 = avg3_epu16(&A3, &B3, &C3);
+ const __m128i XL0 = _mm_alignr_epi8(L0, _mm_slli_si128(B0, 14), 14);
+ const __m128i XL1 = _mm_alignr_epi8(L1, L0, 14);
+ const __m128i XL2 = _mm_alignr_epi8(L2, L1, 14);
+ const __m128i XL3 = _mm_alignr_epi8(L3, L2, 14);
+ const __m128i L0_ = _mm_alignr_epi8(L1, L0, 2);
+ const __m128i L1_ = _mm_alignr_epi8(L2, L1, 2);
+ const __m128i L2_ = _mm_alignr_epi8(L3, L2, 2);
+ const __m128i L3_ = _mm_srli_si128(L3, 2);
+ __m128i rowa_0 = avg2_0;
+ __m128i rowa_1 = avg2_1;
+ __m128i rowa_2 = avg2_2;
+ __m128i rowa_3 = avg2_3;
+ __m128i rowb_0 = avg3_0;
+ __m128i rowb_1 = avg3_1;
+ __m128i rowb_2 = avg3_2;
+ __m128i rowb_3 = avg3_3;
+ __m128i avg3_left[4];
+ int i, j;
+ (void)bd;
+ avg3_left[0] = avg3_epu16(&XL0, &L0, &L0_);
+ avg3_left[1] = avg3_epu16(&XL1, &L1, &L1_);
+ avg3_left[2] = avg3_epu16(&XL2, &L2, &L2_);
+ avg3_left[3] = avg3_epu16(&XL3, &L3, &L3_);
+ for (i = 0; i < 4; ++i) {+ __m128i avg_left = avg3_left[i];
+ for (j = 0; j < 8; j += 2) {+ _mm_store_si128((__m128i *)dst, rowa_0);
+ _mm_store_si128((__m128i *)(dst + 8), rowa_1);
+ _mm_store_si128((__m128i *)(dst + 16), rowa_2);
+ _mm_store_si128((__m128i *)(dst + 24), rowa_3);
+ dst += stride;
+ _mm_store_si128((__m128i *)dst, rowb_0);
+ _mm_store_si128((__m128i *)(dst + 8), rowb_1);
+ _mm_store_si128((__m128i *)(dst + 16), rowb_2);
+ _mm_store_si128((__m128i *)(dst + 24), rowb_3);
+ dst += stride;
+ rowa_3 = _mm_alignr_epi8(rowa_3, rowa_2, 14);
+ rowa_2 = _mm_alignr_epi8(rowa_2, rowa_1, 14);
+ rowa_1 = _mm_alignr_epi8(rowa_1, rowa_0, 14);
+ rowa_0 = _mm_alignr_epi8(rowa_0, rotr_epu16(&avg_left, &rotrw), 14);
+ rowb_3 = _mm_alignr_epi8(rowb_3, rowb_2, 14);
+ rowb_2 = _mm_alignr_epi8(rowb_2, rowb_1, 14);
+ rowb_1 = _mm_alignr_epi8(rowb_1, rowb_0, 14);
+ rowb_0 = _mm_alignr_epi8(rowb_0, rotr_epu16(&avg_left, &rotrw), 14);
+ }
+ }
+}
+
void vpx_highbd_d153_predictor_8x8_ssse3(uint16_t *dst, ptrdiff_t stride,
const uint16_t *above,
const uint16_t *left, int bd) {