Update libaom to commit ID 1e227d41f0616de9548a673a83a21ef990b62591

1 files changed, 3472 insertions, 463 deletions

diff --git a/third_party/aom/av1/common/x86/highbd_inv_txfm_sse4.c b/third_party/aom/av1/common/x86/highbd_inv_txfm_sse4.c
index 801a4133b..e29e0baf5 100644
--- a/third_party/aom/av1/common/x86/highbd_inv_txfm_sse4.c
+++ b/third_party/aom/av1/common/x86/highbd_inv_txfm_sse4.c
@@ -15,8 +15,60 @@
 #include "config/av1_rtcd.h"
 
 #include "av1/common/av1_inv_txfm1d_cfg.h"
+#include "av1/common/idct.h"
+#include "av1/common/x86/av1_inv_txfm_ssse3.h"
+#include "av1/common/x86/av1_txfm_sse4.h"
 #include "av1/common/x86/highbd_txfm_utility_sse4.h"
 
+static INLINE __m128i highbd_clamp_epi16(__m128i u, int bd) {
+  const __m128i zero = _mm_setzero_si128();
+  const __m128i one = _mm_set1_epi16(1);
+  const __m128i max = _mm_sub_epi16(_mm_slli_epi16(one, bd), one);
+  __m128i clamped, mask;
+
+  mask = _mm_cmpgt_epi16(u, max);
+  clamped = _mm_andnot_si128(mask, u);
+  mask = _mm_and_si128(mask, max);
+  clamped = _mm_or_si128(mask, clamped);
+  mask = _mm_cmpgt_epi16(clamped, zero);
+  clamped = _mm_and_si128(clamped, mask);
+
+  return clamped;
+}
+
+static INLINE __m128i highbd_get_recon_8x8_sse4_1(const __m128i pred,
+                                                  __m128i res0, __m128i res1,
+                                                  const int bd) {
+  __m128i x0 = _mm_cvtepi16_epi32(pred);
+  __m128i x1 = _mm_cvtepi16_epi32(_mm_srli_si128(pred, 8));
+
+  x0 = _mm_add_epi32(res0, x0);
+  x1 = _mm_add_epi32(res1, x1);
+  x0 = _mm_packus_epi32(x0, x1);
+  x0 = highbd_clamp_epi16(x0, bd);
+  return x0;
+}
+
+static INLINE void highbd_write_buffer_8xn_sse4_1(__m128i *in, uint16_t *output,
+                                                  int stride, int flipud,
+                                                  int height, const int bd) {
+  int j = flipud ? (height - 1) : 0;
+  const int step = flipud ? -1 : 1;
+  for (int i = 0; i < height; ++i, j += step) {
+    __m128i v = _mm_loadu_si128((__m128i const *)(output + i * stride));
+    __m128i u = highbd_get_recon_8x8_sse4_1(v, in[j], in[j + height], bd);
+
+    _mm_storeu_si128((__m128i *)(output + i * stride), u);
+  }
+}
+
+static INLINE void load_buffer_32bit_input(const int32_t *in, int stride,
+                                           __m128i *out, int out_size) {
+  for (int i = 0; i < out_size; ++i) {
+    out[i] = _mm_loadu_si128((const __m128i *)(in + i * stride));
+  }
+}
+
 static INLINE void load_buffer_4x4(const int32_t *coeff, __m128i *in) {
   in[0] = _mm_load_si128((const __m128i *)(coeff + 0));
   in[1] = _mm_load_si128((const __m128i *)(coeff + 4));
@@ -57,18 +109,231 @@ static void addsub_shift_sse4_1(const __m128i in0, const __m128i in1,
   __m128i a0 = _mm_add_epi32(in0_w_offset, in1);
   __m128i a1 = _mm_sub_epi32(in0_w_offset, in1);
 
+  a0 = _mm_sra_epi32(a0, _mm_cvtsi32_si128(shift));
+  a1 = _mm_sra_epi32(a1, _mm_cvtsi32_si128(shift));
+
   a0 = _mm_max_epi32(a0, *clamp_lo);
   a0 = _mm_min_epi32(a0, *clamp_hi);
   a1 = _mm_max_epi32(a1, *clamp_lo);
   a1 = _mm_min_epi32(a1, *clamp_hi);
 
-  a0 = _mm_sra_epi32(a0, _mm_cvtsi32_si128(shift));
-  a1 = _mm_sra_epi32(a1, _mm_cvtsi32_si128(shift));
-
   *out0 = a0;
   *out1 = a1;
 }
 
+static INLINE void idct32_stage4_sse4_1(
+    __m128i *bf1, const __m128i *cospim8, const __m128i *cospi56,
+    const __m128i *cospi8, const __m128i *cospim56, const __m128i *cospim40,
+    const __m128i *cospi24, const __m128i *cospi40, const __m128i *cospim24,
+    const __m128i *rounding, int bit) {
+  __m128i temp1, temp2;
+  temp1 = half_btf_sse4_1(cospim8, &bf1[17], cospi56, &bf1[30], rounding, bit);
+  bf1[30] = half_btf_sse4_1(cospi56, &bf1[17], cospi8, &bf1[30], rounding, bit);
+  bf1[17] = temp1;
+
+  temp2 = half_btf_sse4_1(cospim56, &bf1[18], cospim8, &bf1[29], rounding, bit);
+  bf1[29] =
+      half_btf_sse4_1(cospim8, &bf1[18], cospi56, &bf1[29], rounding, bit);
+  bf1[18] = temp2;
+
+  temp1 = half_btf_sse4_1(cospim40, &bf1[21], cospi24, &bf1[26], rounding, bit);
+  bf1[26] =
+      half_btf_sse4_1(cospi24, &bf1[21], cospi40, &bf1[26], rounding, bit);
+  bf1[21] = temp1;
+
+  temp2 =
+      half_btf_sse4_1(cospim24, &bf1[22], cospim40, &bf1[25], rounding, bit);
+  bf1[25] =
+      half_btf_sse4_1(cospim40, &bf1[22], cospi24, &bf1[25], rounding, bit);
+  bf1[22] = temp2;
+}
+
+static INLINE void idct32_stage5_sse4_1(
+    __m128i *bf1, const __m128i *cospim16, const __m128i *cospi48,
+    const __m128i *cospi16, const __m128i *cospim48, const __m128i *clamp_lo,
+    const __m128i *clamp_hi, const __m128i *rounding, int bit) {
+  __m128i temp1, temp2;
+  temp1 = half_btf_sse4_1(cospim16, &bf1[9], cospi48, &bf1[14], rounding, bit);
+  bf1[14] = half_btf_sse4_1(cospi48, &bf1[9], cospi16, &bf1[14], rounding, bit);
+  bf1[9] = temp1;
+
+  temp2 =
+      half_btf_sse4_1(cospim48, &bf1[10], cospim16, &bf1[13], rounding, bit);
+  bf1[13] =
+      half_btf_sse4_1(cospim16, &bf1[10], cospi48, &bf1[13], rounding, bit);
+  bf1[10] = temp2;
+
+  addsub_sse4_1(bf1[16], bf1[19], bf1 + 16, bf1 + 19, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[17], bf1[18], bf1 + 17, bf1 + 18, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[23], bf1[20], bf1 + 23, bf1 + 20, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[22], bf1[21], bf1 + 22, bf1 + 21, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[24], bf1[27], bf1 + 24, bf1 + 27, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[25], bf1[26], bf1 + 25, bf1 + 26, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[31], bf1[28], bf1 + 31, bf1 + 28, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[30], bf1[29], bf1 + 30, bf1 + 29, clamp_lo, clamp_hi);
+}
+
+static INLINE void idct32_stage6_sse4_1(
+    __m128i *bf1, const __m128i *cospim32, const __m128i *cospi32,
+    const __m128i *cospim16, const __m128i *cospi48, const __m128i *cospi16,
+    const __m128i *cospim48, const __m128i *clamp_lo, const __m128i *clamp_hi,
+    const __m128i *rounding, int bit) {
+  __m128i temp1, temp2;
+  temp1 = half_btf_sse4_1(cospim32, &bf1[5], cospi32, &bf1[6], rounding, bit);
+  bf1[6] = half_btf_sse4_1(cospi32, &bf1[5], cospi32, &bf1[6], rounding, bit);
+  bf1[5] = temp1;
+
+  addsub_sse4_1(bf1[8], bf1[11], bf1 + 8, bf1 + 11, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[9], bf1[10], bf1 + 9, bf1 + 10, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[15], bf1[12], bf1 + 15, bf1 + 12, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[14], bf1[13], bf1 + 14, bf1 + 13, clamp_lo, clamp_hi);
+
+  temp1 = half_btf_sse4_1(cospim16, &bf1[18], cospi48, &bf1[29], rounding, bit);
+  bf1[29] =
+      half_btf_sse4_1(cospi48, &bf1[18], cospi16, &bf1[29], rounding, bit);
+  bf1[18] = temp1;
+  temp2 = half_btf_sse4_1(cospim16, &bf1[19], cospi48, &bf1[28], rounding, bit);
+  bf1[28] =
+      half_btf_sse4_1(cospi48, &bf1[19], cospi16, &bf1[28], rounding, bit);
+  bf1[19] = temp2;
+  temp1 =
+      half_btf_sse4_1(cospim48, &bf1[20], cospim16, &bf1[27], rounding, bit);
+  bf1[27] =
+      half_btf_sse4_1(cospim16, &bf1[20], cospi48, &bf1[27], rounding, bit);
+  bf1[20] = temp1;
+  temp2 =
+      half_btf_sse4_1(cospim48, &bf1[21], cospim16, &bf1[26], rounding, bit);
+  bf1[26] =
+      half_btf_sse4_1(cospim16, &bf1[21], cospi48, &bf1[26], rounding, bit);
+  bf1[21] = temp2;
+}
+
+static INLINE void idct32_stage7_sse4_1(__m128i *bf1, const __m128i *cospim32,
+                                        const __m128i *cospi32,
+                                        const __m128i *clamp_lo,
+                                        const __m128i *clamp_hi,
+                                        const __m128i *rounding, int bit) {
+  __m128i temp1, temp2;
+  addsub_sse4_1(bf1[0], bf1[7], bf1 + 0, bf1 + 7, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[1], bf1[6], bf1 + 1, bf1 + 6, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[2], bf1[5], bf1 + 2, bf1 + 5, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[3], bf1[4], bf1 + 3, bf1 + 4, clamp_lo, clamp_hi);
+
+  temp1 = half_btf_sse4_1(cospim32, &bf1[10], cospi32, &bf1[13], rounding, bit);
+  bf1[13] =
+      half_btf_sse4_1(cospi32, &bf1[10], cospi32, &bf1[13], rounding, bit);
+  bf1[10] = temp1;
+  temp2 = half_btf_sse4_1(cospim32, &bf1[11], cospi32, &bf1[12], rounding, bit);
+  bf1[12] =
+      half_btf_sse4_1(cospi32, &bf1[11], cospi32, &bf1[12], rounding, bit);
+  bf1[11] = temp2;
+
+  addsub_sse4_1(bf1[16], bf1[23], bf1 + 16, bf1 + 23, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[17], bf1[22], bf1 + 17, bf1 + 22, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[18], bf1[21], bf1 + 18, bf1 + 21, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[19], bf1[20], bf1 + 19, bf1 + 20, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[31], bf1[24], bf1 + 31, bf1 + 24, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[30], bf1[25], bf1 + 30, bf1 + 25, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[29], bf1[26], bf1 + 29, bf1 + 26, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[28], bf1[27], bf1 + 28, bf1 + 27, clamp_lo, clamp_hi);
+}
+
+static INLINE void idct32_stage8_sse4_1(__m128i *bf1, const __m128i *cospim32,
+                                        const __m128i *cospi32,
+                                        const __m128i *clamp_lo,
+                                        const __m128i *clamp_hi,
+                                        const __m128i *rounding, int bit) {
+  __m128i temp1, temp2;
+  addsub_sse4_1(bf1[0], bf1[15], bf1 + 0, bf1 + 15, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[1], bf1[14], bf1 + 1, bf1 + 14, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[2], bf1[13], bf1 + 2, bf1 + 13, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[3], bf1[12], bf1 + 3, bf1 + 12, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[4], bf1[11], bf1 + 4, bf1 + 11, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[5], bf1[10], bf1 + 5, bf1 + 10, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[6], bf1[9], bf1 + 6, bf1 + 9, clamp_lo, clamp_hi);
+  addsub_sse4_1(bf1[7], bf1[8], bf1 + 7, bf1 + 8, clamp_lo, clamp_hi);
+
+  temp1 = half_btf_sse4_1(cospim32, &bf1[20], cospi32, &bf1[27], rounding, bit);
+  bf1[27] =
+      half_btf_sse4_1(cospi32, &bf1[20], cospi32, &bf1[27], rounding, bit);
+  bf1[20] = temp1;
+  temp2 = half_btf_sse4_1(cospim32, &bf1[21], cospi32, &bf1[26], rounding, bit);
+  bf1[26] =
+      half_btf_sse4_1(cospi32, &bf1[21], cospi32, &bf1[26], rounding, bit);
+  bf1[21] = temp2;
+  temp1 = half_btf_sse4_1(cospim32, &bf1[22], cospi32, &bf1[25], rounding, bit);
+  bf1[25] =
+      half_btf_sse4_1(cospi32, &bf1[22], cospi32, &bf1[25], rounding, bit);
+  bf1[22] = temp1;
+  temp2 = half_btf_sse4_1(cospim32, &bf1[23], cospi32, &bf1[24], rounding, bit);
+  bf1[24] =
+      half_btf_sse4_1(cospi32, &bf1[23], cospi32, &bf1[24], rounding, bit);
+  bf1[23] = temp2;
+}
+
+static INLINE void idct32_stage9_sse4_1(__m128i *bf1, __m128i *out,
+                                        const int do_cols, const int bd,
+                                        const int out_shift,
+                                        const int log_range) {
+  if (do_cols) {
+    addsub_no_clamp_sse4_1(bf1[0], bf1[31], out + 0, out + 31);
+    addsub_no_clamp_sse4_1(bf1[1], bf1[30], out + 1, out + 30);
+    addsub_no_clamp_sse4_1(bf1[2], bf1[29], out + 2, out + 29);
+    addsub_no_clamp_sse4_1(bf1[3], bf1[28], out + 3, out + 28);
+    addsub_no_clamp_sse4_1(bf1[4], bf1[27], out + 4, out + 27);
+    addsub_no_clamp_sse4_1(bf1[5], bf1[26], out + 5, out + 26);
+    addsub_no_clamp_sse4_1(bf1[6], bf1[25], out + 6, out + 25);
+    addsub_no_clamp_sse4_1(bf1[7], bf1[24], out + 7, out + 24);
+    addsub_no_clamp_sse4_1(bf1[8], bf1[23], out + 8, out + 23);
+    addsub_no_clamp_sse4_1(bf1[9], bf1[22], out + 9, out + 22);
+    addsub_no_clamp_sse4_1(bf1[10], bf1[21], out + 10, out + 21);
+    addsub_no_clamp_sse4_1(bf1[11], bf1[20], out + 11, out + 20);
+    addsub_no_clamp_sse4_1(bf1[12], bf1[19], out + 12, out + 19);
+    addsub_no_clamp_sse4_1(bf1[13], bf1[18], out + 13, out + 18);
+    addsub_no_clamp_sse4_1(bf1[14], bf1[17], out + 14, out + 17);
+    addsub_no_clamp_sse4_1(bf1[15], bf1[16], out + 15, out + 16);
+  } else {
+    const int log_range_out = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+        -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+    const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+        (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+
+    addsub_shift_sse4_1(bf1[0], bf1[31], out + 0, out + 31, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[1], bf1[30], out + 1, out + 30, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[2], bf1[29], out + 2, out + 29, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[3], bf1[28], out + 3, out + 28, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[4], bf1[27], out + 4, out + 27, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[5], bf1[26], out + 5, out + 26, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[6], bf1[25], out + 6, out + 25, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[7], bf1[24], out + 7, out + 24, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[8], bf1[23], out + 8, out + 23, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[9], bf1[22], out + 9, out + 22, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[10], bf1[21], out + 10, out + 21, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[11], bf1[20], out + 11, out + 20, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[12], bf1[19], out + 12, out + 19, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[13], bf1[18], out + 13, out + 18, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[14], bf1[17], out + 14, out + 17, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf1[15], bf1[16], out + 15, out + 16, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+  }
+}
+
 static void neg_shift_sse4_1(const __m128i in0, const __m128i in1,
                              __m128i *out0, __m128i *out1,
                              const __m128i *clamp_lo, const __m128i *clamp_hi,
@@ -77,14 +342,14 @@ static void neg_shift_sse4_1(const __m128i in0, const __m128i in1,
   __m128i a0 = _mm_add_epi32(offset, in0);
   __m128i a1 = _mm_sub_epi32(offset, in1);
 
+  a0 = _mm_sra_epi32(a0, _mm_cvtsi32_si128(shift));
+  a1 = _mm_sra_epi32(a1, _mm_cvtsi32_si128(shift));
+
   a0 = _mm_max_epi32(a0, *clamp_lo);
   a0 = _mm_min_epi32(a0, *clamp_hi);
   a1 = _mm_max_epi32(a1, *clamp_lo);
   a1 = _mm_min_epi32(a1, *clamp_hi);
 
-  a0 = _mm_sra_epi32(a0, _mm_cvtsi32_si128(shift));
-  a1 = _mm_sra_epi32(a1, _mm_cvtsi32_si128(shift));
-
   *out0 = a0;
   *out1 = a1;
 }
@@ -96,9 +361,6 @@ static void idct4x4_sse4_1(__m128i *in, int bit, int do_cols, int bd) {
   const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
   const __m128i cospim16 = _mm_set1_epi32(-cospi[16]);
   const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
-  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
-  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
-  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
 
   __m128i u0, u1, u2, u3;
   __m128i v0, v1, v2, v3, x, y;
@@ -135,11 +397,19 @@ static void idct4x4_sse4_1(__m128i *in, int bit, int do_cols, int bd) {
   v3 = _mm_add_epi32(v3, rnding);
   v3 = _mm_srai_epi32(v3, bit);
 
-  addsub_sse4_1(v0, v3, in + 0, in + 3, &clamp_lo, &clamp_hi);
-  addsub_sse4_1(v1, v2, in + 1, in + 2, &clamp_lo, &clamp_hi);
+  if (do_cols) {
+    addsub_no_clamp_sse4_1(v0, v3, in + 0, in + 3);
+    addsub_no_clamp_sse4_1(v1, v2, in + 1, in + 2);
+  } else {
+    const int log_range = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+    const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+    addsub_sse4_1(v0, v3, in + 0, in + 3, &clamp_lo, &clamp_hi);
+    addsub_sse4_1(v1, v2, in + 1, in + 2, &clamp_lo, &clamp_hi);
+  }
 }
 
-static void iadst4x4_sse4_1(__m128i *in, int bit) {
+static void iadst4x4_sse4_1(__m128i *in, int bit, int do_cols, int bd) {
   const int32_t *sinpi = sinpi_arr(bit);
   const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
   const __m128i sinpi1 = _mm_set1_epi32((int)sinpi[1]);
@@ -197,6 +467,21 @@ static void iadst4x4_sse4_1(__m128i *in, int bit) {
   u3 = _mm_add_epi32(u3, rnding);
   u3 = _mm_srai_epi32(u3, bit);
 
+  if (!do_cols) {
+    const int log_range = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+    const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+
+    u0 = _mm_max_epi32(u0, clamp_lo);
+    u0 = _mm_min_epi32(u0, clamp_hi);
+    u1 = _mm_max_epi32(u1, clamp_lo);
+    u1 = _mm_min_epi32(u1, clamp_hi);
+    u2 = _mm_max_epi32(u2, clamp_lo);
+    u2 = _mm_min_epi32(u2, clamp_hi);
+    u3 = _mm_max_epi32(u3, clamp_lo);
+    u3 = _mm_min_epi32(u3, clamp_hi);
+  }
+
   in[0] = u0;
   in[1] = u1;
   in[2] = u2;
@@ -217,22 +502,6 @@ static INLINE void round_shift_4x4(__m128i *in, int shift) {
   in[3] = _mm_srai_epi32(in[3], shift);
 }
 
-static INLINE __m128i highbd_clamp_epi16(__m128i u, int bd) {
-  const __m128i zero = _mm_setzero_si128();
-  const __m128i one = _mm_set1_epi16(1);
-  const __m128i max = _mm_sub_epi16(_mm_slli_epi16(one, bd), one);
-  __m128i clamped, mask;
-
-  mask = _mm_cmpgt_epi16(u, max);
-  clamped = _mm_andnot_si128(mask, u);
-  mask = _mm_and_si128(mask, max);
-  clamped = _mm_or_si128(mask, clamped);
-  mask = _mm_cmpgt_epi16(clamped, zero);
-  clamped = _mm_and_si128(clamped, mask);
-
-  return clamped;
-}
-
 static void write_buffer_4x4(__m128i *in, uint16_t *output, int stride,
                              int fliplr, int flipud, int shift, int bd) {
   const __m128i zero = _mm_setzero_si128();
@@ -304,49 +573,49 @@ void av1_inv_txfm2d_add_4x4_sse4_1(const int32_t *coeff, uint16_t *output,
     case ADST_DCT:
       load_buffer_4x4(coeff, in);
       idct4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd);
-      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx]);
+      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd);
       write_buffer_4x4(in, output, stride, 0, 0, -shift[1], bd);
       break;
     case DCT_ADST:
       load_buffer_4x4(coeff, in);
-      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx]);
+      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd);
       idct4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd);
       write_buffer_4x4(in, output, stride, 0, 0, -shift[1], bd);
       break;
     case ADST_ADST:
       load_buffer_4x4(coeff, in);
-      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx]);
-      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx]);
+      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd);
+      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd);
       write_buffer_4x4(in, output, stride, 0, 0, -shift[1], bd);
       break;
     case FLIPADST_DCT:
       load_buffer_4x4(coeff, in);
       idct4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd);
-      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx]);
+      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd);
       write_buffer_4x4(in, output, stride, 0, 1, -shift[1], bd);
       break;
     case DCT_FLIPADST:
       load_buffer_4x4(coeff, in);
-      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx]);
+      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd);
       idct4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd);
       write_buffer_4x4(in, output, stride, 1, 0, -shift[1], bd);
       break;
     case FLIPADST_FLIPADST:
       load_buffer_4x4(coeff, in);
-      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx]);
-      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx]);
+      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd);
+      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd);
       write_buffer_4x4(in, output, stride, 1, 1, -shift[1], bd);
       break;
     case ADST_FLIPADST:
       load_buffer_4x4(coeff, in);
-      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx]);
-      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx]);
+      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd);
+      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd);
       write_buffer_4x4(in, output, stride, 1, 0, -shift[1], bd);
       break;
     case FLIPADST_ADST:
       load_buffer_4x4(coeff, in);
-      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx]);
-      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx]);
+      iadst4x4_sse4_1(in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd);
+      iadst4x4_sse4_1(in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd);
       write_buffer_4x4(in, output, stride, 0, 1, -shift[1], bd);
       break;
     default: assert(0);
@@ -482,14 +751,19 @@ static void idct8x8_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
       addsub_no_clamp_sse4_1(u2, u5, out + 2 * 2 + col, out + 5 * 2 + col);
       addsub_no_clamp_sse4_1(u3, u4, out + 3 * 2 + col, out + 4 * 2 + col);
     } else {
+      const int log_range_out = AOMMAX(16, bd + 6);
+      const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+          -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+      const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+          (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
       addsub_shift_sse4_1(u0, u7, out + 0 * 2 + col, out + 7 * 2 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
+                          &clamp_lo_out, &clamp_hi_out, out_shift);
       addsub_shift_sse4_1(u1, u6, out + 1 * 2 + col, out + 6 * 2 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
+                          &clamp_lo_out, &clamp_hi_out, out_shift);
       addsub_shift_sse4_1(u2, u5, out + 2 * 2 + col, out + 5 * 2 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
+                          &clamp_lo_out, &clamp_hi_out, out_shift);
       addsub_shift_sse4_1(u3, u4, out + 3 * 2 + col, out + 4 * 2 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
+                          &clamp_lo_out, &clamp_hi_out, out_shift);
     }
   }
 }
@@ -651,14 +925,18 @@ static void iadst8x8_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
     out[12] = u[5];
     out[14] = _mm_sub_epi32(kZero, u[1]);
   } else {
-    neg_shift_sse4_1(u[0], u[4], out + 0, out + 2, &clamp_lo, &clamp_hi,
-                     out_shift);
-    neg_shift_sse4_1(u[6], u[2], out + 4, out + 6, &clamp_lo, &clamp_hi,
-                     out_shift);
-    neg_shift_sse4_1(u[3], u[7], out + 8, out + 10, &clamp_lo, &clamp_hi,
+    const int log_range_out = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo_out = _mm_set1_epi32(-(1 << (log_range_out - 1)));
+    const __m128i clamp_hi_out = _mm_set1_epi32((1 << (log_range_out - 1)) - 1);
+
+    neg_shift_sse4_1(u[0], u[4], out + 0, out + 2, &clamp_lo_out, &clamp_hi_out,
                      out_shift);
-    neg_shift_sse4_1(u[5], u[1], out + 12, out + 14, &clamp_lo, &clamp_hi,
+    neg_shift_sse4_1(u[6], u[2], out + 4, out + 6, &clamp_lo_out, &clamp_hi_out,
                      out_shift);
+    neg_shift_sse4_1(u[3], u[7], out + 8, out + 10, &clamp_lo_out,
+                     &clamp_hi_out, out_shift);
+    neg_shift_sse4_1(u[5], u[1], out + 12, out + 14, &clamp_lo_out,
+                     &clamp_hi_out, out_shift);
   }
 
   // Odd 8 points: 1, 3, ..., 15
@@ -796,14 +1074,18 @@ static void iadst8x8_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
     out[13] = u[5];
     out[15] = _mm_sub_epi32(kZero, u[1]);
   } else {
-    neg_shift_sse4_1(u[0], u[4], out + 1, out + 3, &clamp_lo, &clamp_hi,
-                     out_shift);
-    neg_shift_sse4_1(u[6], u[2], out + 5, out + 7, &clamp_lo, &clamp_hi,
-                     out_shift);
-    neg_shift_sse4_1(u[3], u[7], out + 9, out + 11, &clamp_lo, &clamp_hi,
+    const int log_range_out = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo_out = _mm_set1_epi32(-(1 << (log_range_out - 1)));
+    const __m128i clamp_hi_out = _mm_set1_epi32((1 << (log_range_out - 1)) - 1);
+
+    neg_shift_sse4_1(u[0], u[4], out + 1, out + 3, &clamp_lo_out, &clamp_hi_out,
                      out_shift);
-    neg_shift_sse4_1(u[5], u[1], out + 13, out + 15, &clamp_lo, &clamp_hi,
+    neg_shift_sse4_1(u[6], u[2], out + 5, out + 7, &clamp_lo_out, &clamp_hi_out,
                      out_shift);
+    neg_shift_sse4_1(u[3], u[7], out + 9, out + 11, &clamp_lo_out,
+                     &clamp_hi_out, out_shift);
+    neg_shift_sse4_1(u[5], u[1], out + 13, out + 15, &clamp_lo_out,
+                     &clamp_hi_out, out_shift);
   }
 }
 
@@ -976,64 +1258,1141 @@ void av1_inv_txfm2d_add_8x8_sse4_1(const int32_t *coeff, uint16_t *output,
   }
 }
 
-// 16x16
-static void load_buffer_16x16(const int32_t *coeff, __m128i *in) {
-  int i;
-  for (i = 0; i < 64; ++i) {
-    in[i] = _mm_load_si128((const __m128i *)(coeff + (i << 2)));
+static void idct8x8_low1_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
+                                int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  __m128i x;
+
+  // stage 0
+  // stage 1
+  // stage 2
+  // stage 3
+  x = _mm_mullo_epi32(in[0], cospi32);
+  x = _mm_add_epi32(x, rnding);
+  x = _mm_srai_epi32(x, bit);
+
+  // stage 4
+  // stage 5
+  if (!do_cols) {
+    const int log_range_out = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+        -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+    const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+        (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+
+    __m128i offset = _mm_set1_epi32((1 << out_shift) >> 1);
+    x = _mm_add_epi32(x, offset);
+    x = _mm_sra_epi32(x, _mm_cvtsi32_si128(out_shift));
+    x = _mm_max_epi32(x, clamp_lo_out);
+    x = _mm_min_epi32(x, clamp_hi_out);
   }
+
+  out[0] = x;
+  out[1] = x;
+  out[2] = x;
+  out[3] = x;
+  out[4] = x;
+  out[5] = x;
+  out[6] = x;
+  out[7] = x;
 }
 
-static void assign_8x8_input_from_16x16(const __m128i *in, __m128i *in8x8,
-                                        int col) {
-  int i;
-  for (i = 0; i < 16; i += 2) {
-    in8x8[i] = in[col];
-    in8x8[i + 1] = in[col + 1];
-    col += 4;
+static void idct8x8_new_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
+                               int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi56 = _mm_set1_epi32(cospi[56]);
+  const __m128i cospim8 = _mm_set1_epi32(-cospi[8]);
+  const __m128i cospi24 = _mm_set1_epi32(cospi[24]);
+  const __m128i cospim40 = _mm_set1_epi32(-cospi[40]);
+  const __m128i cospi40 = _mm_set1_epi32(cospi[40]);
+  const __m128i cospi8 = _mm_set1_epi32(cospi[8]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospim16 = _mm_set1_epi32(-cospi[16]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+  __m128i u0, u1, u2, u3, u4, u5, u6, u7;
+  __m128i v0, v1, v2, v3, v4, v5, v6, v7;
+  __m128i x, y;
+
+  // stage 0
+  // stage 1
+  // stage 2
+  u0 = in[0];
+  u1 = in[4];
+  u2 = in[2];
+  u3 = in[6];
+
+  x = _mm_mullo_epi32(in[1], cospi56);
+  y = _mm_mullo_epi32(in[7], cospim8);
+  u4 = _mm_add_epi32(x, y);
+  u4 = _mm_add_epi32(u4, rnding);
+  u4 = _mm_srai_epi32(u4, bit);
+
+  x = _mm_mullo_epi32(in[1], cospi8);
+  y = _mm_mullo_epi32(in[7], cospi56);
+  u7 = _mm_add_epi32(x, y);
+  u7 = _mm_add_epi32(u7, rnding);
+  u7 = _mm_srai_epi32(u7, bit);
+
+  x = _mm_mullo_epi32(in[5], cospi24);
+  y = _mm_mullo_epi32(in[3], cospim40);
+  u5 = _mm_add_epi32(x, y);
+  u5 = _mm_add_epi32(u5, rnding);
+  u5 = _mm_srai_epi32(u5, bit);
+
+  x = _mm_mullo_epi32(in[5], cospi40);
+  y = _mm_mullo_epi32(in[3], cospi24);
+  u6 = _mm_add_epi32(x, y);
+  u6 = _mm_add_epi32(u6, rnding);
+  u6 = _mm_srai_epi32(u6, bit);
+
+  // stage 3
+  x = _mm_mullo_epi32(u0, cospi32);
+  y = _mm_mullo_epi32(u1, cospi32);
+  v0 = _mm_add_epi32(x, y);
+  v0 = _mm_add_epi32(v0, rnding);
+  v0 = _mm_srai_epi32(v0, bit);
+
+  v1 = _mm_sub_epi32(x, y);
+  v1 = _mm_add_epi32(v1, rnding);
+  v1 = _mm_srai_epi32(v1, bit);
+
+  x = _mm_mullo_epi32(u2, cospi48);
+  y = _mm_mullo_epi32(u3, cospim16);
+  v2 = _mm_add_epi32(x, y);
+  v2 = _mm_add_epi32(v2, rnding);
+  v2 = _mm_srai_epi32(v2, bit);
+
+  x = _mm_mullo_epi32(u2, cospi16);
+  y = _mm_mullo_epi32(u3, cospi48);
+  v3 = _mm_add_epi32(x, y);
+  v3 = _mm_add_epi32(v3, rnding);
+  v3 = _mm_srai_epi32(v3, bit);
+
+  addsub_sse4_1(u4, u5, &v4, &v5, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(u7, u6, &v7, &v6, &clamp_lo, &clamp_hi);
+
+  // stage 4
+  addsub_sse4_1(v0, v3, &u0, &u3, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(v1, v2, &u1, &u2, &clamp_lo, &clamp_hi);
+  u4 = v4;
+  u7 = v7;
+
+  x = _mm_mullo_epi32(v5, cospi32);
+  y = _mm_mullo_epi32(v6, cospi32);
+  u6 = _mm_add_epi32(y, x);
+  u6 = _mm_add_epi32(u6, rnding);
+  u6 = _mm_srai_epi32(u6, bit);
+
+  u5 = _mm_sub_epi32(y, x);
+  u5 = _mm_add_epi32(u5, rnding);
+  u5 = _mm_srai_epi32(u5, bit);
+
+  // stage 5
+  if (do_cols) {
+    addsub_no_clamp_sse4_1(u0, u7, out + 0, out + 7);
+    addsub_no_clamp_sse4_1(u1, u6, out + 1, out + 6);
+    addsub_no_clamp_sse4_1(u2, u5, out + 2, out + 5);
+    addsub_no_clamp_sse4_1(u3, u4, out + 3, out + 4);
+  } else {
+    const int log_range_out = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+        -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+    const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+        (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+    addsub_shift_sse4_1(u0, u7, out + 0, out + 7, &clamp_lo_out, &clamp_hi_out,
+                        out_shift);
+    addsub_shift_sse4_1(u1, u6, out + 1, out + 6, &clamp_lo_out, &clamp_hi_out,
+                        out_shift);
+    addsub_shift_sse4_1(u2, u5, out + 2, out + 5, &clamp_lo_out, &clamp_hi_out,
+                        out_shift);
+    addsub_shift_sse4_1(u3, u4, out + 3, out + 4, &clamp_lo_out, &clamp_hi_out,
+                        out_shift);
   }
 }
 
-static void swap_addr(uint16_t **output1, uint16_t **output2) {
-  uint16_t *tmp;
-  tmp = *output1;
-  *output1 = *output2;
-  *output2 = tmp;
+static void iadst8x8_low1_sse4_1(__m128i *in, __m128i *out, int bit,
+                                 int do_cols, int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi4 = _mm_set1_epi32(cospi[4]);
+  const __m128i cospi60 = _mm_set1_epi32(cospi[60]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const __m128i kZero = _mm_setzero_si128();
+  __m128i u[8], x;
+
+  // stage 0
+  // stage 1
+  // stage 2
+
+  x = _mm_mullo_epi32(in[0], cospi60);
+  u[0] = _mm_add_epi32(x, rnding);
+  u[0] = _mm_srai_epi32(u[0], bit);
+
+  x = _mm_mullo_epi32(in[0], cospi4);
+  u[1] = _mm_sub_epi32(kZero, x);
+  u[1] = _mm_add_epi32(u[1], rnding);
+  u[1] = _mm_srai_epi32(u[1], bit);
+
+  // stage 3
+  // stage 4
+  __m128i temp1, temp2;
+  temp1 = _mm_mullo_epi32(u[0], cospi16);
+  x = _mm_mullo_epi32(u[1], cospi48);
+  temp1 = _mm_add_epi32(temp1, x);
+  temp1 = _mm_add_epi32(temp1, rnding);
+  temp1 = _mm_srai_epi32(temp1, bit);
+  u[4] = temp1;
+
+  temp2 = _mm_mullo_epi32(u[0], cospi48);
+  x = _mm_mullo_epi32(u[1], cospi16);
+  u[5] = _mm_sub_epi32(temp2, x);
+  u[5] = _mm_add_epi32(u[5], rnding);
+  u[5] = _mm_srai_epi32(u[5], bit);
+
+  // stage 5
+  // stage 6
+  temp1 = _mm_mullo_epi32(u[0], cospi32);
+  x = _mm_mullo_epi32(u[1], cospi32);
+  u[2] = _mm_add_epi32(temp1, x);
+  u[2] = _mm_add_epi32(u[2], rnding);
+  u[2] = _mm_srai_epi32(u[2], bit);
+
+  u[3] = _mm_sub_epi32(temp1, x);
+  u[3] = _mm_add_epi32(u[3], rnding);
+  u[3] = _mm_srai_epi32(u[3], bit);
+
+  temp1 = _mm_mullo_epi32(u[4], cospi32);
+  x = _mm_mullo_epi32(u[5], cospi32);
+  u[6] = _mm_add_epi32(temp1, x);
+  u[6] = _mm_add_epi32(u[6], rnding);
+  u[6] = _mm_srai_epi32(u[6], bit);
+
+  u[7] = _mm_sub_epi32(temp1, x);
+  u[7] = _mm_add_epi32(u[7], rnding);
+  u[7] = _mm_srai_epi32(u[7], bit);
+
+  // stage 7
+  if (do_cols) {
+    out[0] = u[0];
+    out[1] = _mm_sub_epi32(kZero, u[4]);
+    out[2] = u[6];
+    out[3] = _mm_sub_epi32(kZero, u[2]);
+    out[4] = u[3];
+    out[5] = _mm_sub_epi32(kZero, u[7]);
+    out[6] = u[5];
+    out[7] = _mm_sub_epi32(kZero, u[1]);
+  } else {
+    const int log_range_out = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo_out = _mm_set1_epi32(-(1 << (log_range_out - 1)));
+    const __m128i clamp_hi_out = _mm_set1_epi32((1 << (log_range_out - 1)) - 1);
+
+    neg_shift_sse4_1(u[0], u[4], out + 0, out + 1, &clamp_lo_out, &clamp_hi_out,
+                     out_shift);
+    neg_shift_sse4_1(u[6], u[2], out + 2, out + 3, &clamp_lo_out, &clamp_hi_out,
+                     out_shift);
+    neg_shift_sse4_1(u[3], u[7], out + 4, out + 5, &clamp_lo_out, &clamp_hi_out,
+                     out_shift);
+    neg_shift_sse4_1(u[5], u[1], out + 6, out + 7, &clamp_lo_out, &clamp_hi_out,
+                     out_shift);
+  }
 }
 
-static void write_buffer_16x16(__m128i *in, uint16_t *output, int stride,
-                               int fliplr, int flipud, int shift, int bd) {
-  __m128i in8x8[16];
-  uint16_t *leftUp = &output[0];
-  uint16_t *rightUp = &output[8];
-  uint16_t *leftDown = &output[8 * stride];
-  uint16_t *rightDown = &output[8 * stride + 8];
+static void iadst8x8_new_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
+                                int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi4 = _mm_set1_epi32(cospi[4]);
+  const __m128i cospi60 = _mm_set1_epi32(cospi[60]);
+  const __m128i cospi20 = _mm_set1_epi32(cospi[20]);
+  const __m128i cospi44 = _mm_set1_epi32(cospi[44]);
+  const __m128i cospi36 = _mm_set1_epi32(cospi[36]);
+  const __m128i cospi28 = _mm_set1_epi32(cospi[28]);
+  const __m128i cospi52 = _mm_set1_epi32(cospi[52]);
+  const __m128i cospi12 = _mm_set1_epi32(cospi[12]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospim48 = _mm_set1_epi32(-cospi[48]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const __m128i kZero = _mm_setzero_si128();
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+  __m128i u[8], v[8], x;
+
+  // stage 0
+  // stage 1
+  // stage 2
 
-  if (fliplr) {
-    swap_addr(&leftUp, &rightUp);
-    swap_addr(&leftDown, &rightDown);
+  u[0] = _mm_mullo_epi32(in[7], cospi4);
+  x = _mm_mullo_epi32(in[0], cospi60);
+  u[0] = _mm_add_epi32(u[0], x);
+  u[0] = _mm_add_epi32(u[0], rnding);
+  u[0] = _mm_srai_epi32(u[0], bit);
+
+  u[1] = _mm_mullo_epi32(in[7], cospi60);
+  x = _mm_mullo_epi32(in[0], cospi4);
+  u[1] = _mm_sub_epi32(u[1], x);
+  u[1] = _mm_add_epi32(u[1], rnding);
+  u[1] = _mm_srai_epi32(u[1], bit);
+
+  // (2)
+  u[2] = _mm_mullo_epi32(in[5], cospi20);
+  x = _mm_mullo_epi32(in[2], cospi44);
+  u[2] = _mm_add_epi32(u[2], x);
+  u[2] = _mm_add_epi32(u[2], rnding);
+  u[2] = _mm_srai_epi32(u[2], bit);
+
+  u[3] = _mm_mullo_epi32(in[5], cospi44);
+  x = _mm_mullo_epi32(in[2], cospi20);
+  u[3] = _mm_sub_epi32(u[3], x);
+  u[3] = _mm_add_epi32(u[3], rnding);
+  u[3] = _mm_srai_epi32(u[3], bit);
+
+  // (3)
+  u[4] = _mm_mullo_epi32(in[3], cospi36);
+  x = _mm_mullo_epi32(in[4], cospi28);
+  u[4] = _mm_add_epi32(u[4], x);
+  u[4] = _mm_add_epi32(u[4], rnding);
+  u[4] = _mm_srai_epi32(u[4], bit);
+
+  u[5] = _mm_mullo_epi32(in[3], cospi28);
+  x = _mm_mullo_epi32(in[4], cospi36);
+  u[5] = _mm_sub_epi32(u[5], x);
+  u[5] = _mm_add_epi32(u[5], rnding);
+  u[5] = _mm_srai_epi32(u[5], bit);
+
+  // (4)
+  u[6] = _mm_mullo_epi32(in[1], cospi52);
+  x = _mm_mullo_epi32(in[6], cospi12);
+  u[6] = _mm_add_epi32(u[6], x);
+  u[6] = _mm_add_epi32(u[6], rnding);
+  u[6] = _mm_srai_epi32(u[6], bit);
+
+  u[7] = _mm_mullo_epi32(in[1], cospi12);
+  x = _mm_mullo_epi32(in[6], cospi52);
+  u[7] = _mm_sub_epi32(u[7], x);
+  u[7] = _mm_add_epi32(u[7], rnding);
+  u[7] = _mm_srai_epi32(u[7], bit);
+
+  // stage 3
+  addsub_sse4_1(u[0], u[4], &v[0], &v[4], &clamp_lo, &clamp_hi);
+  addsub_sse4_1(u[1], u[5], &v[1], &v[5], &clamp_lo, &clamp_hi);
+  addsub_sse4_1(u[2], u[6], &v[2], &v[6], &clamp_lo, &clamp_hi);
+  addsub_sse4_1(u[3], u[7], &v[3], &v[7], &clamp_lo, &clamp_hi);
+
+  // stage 4
+  u[0] = v[0];
+  u[1] = v[1];
+  u[2] = v[2];
+  u[3] = v[3];
+
+  u[4] = _mm_mullo_epi32(v[4], cospi16);
+  x = _mm_mullo_epi32(v[5], cospi48);
+  u[4] = _mm_add_epi32(u[4], x);
+  u[4] = _mm_add_epi32(u[4], rnding);
+  u[4] = _mm_srai_epi32(u[4], bit);
+
+  u[5] = _mm_mullo_epi32(v[4], cospi48);
+  x = _mm_mullo_epi32(v[5], cospi16);
+  u[5] = _mm_sub_epi32(u[5], x);
+  u[5] = _mm_add_epi32(u[5], rnding);
+  u[5] = _mm_srai_epi32(u[5], bit);
+
+  u[6] = _mm_mullo_epi32(v[6], cospim48);
+  x = _mm_mullo_epi32(v[7], cospi16);
+  u[6] = _mm_add_epi32(u[6], x);
+  u[6] = _mm_add_epi32(u[6], rnding);
+  u[6] = _mm_srai_epi32(u[6], bit);
+
+  u[7] = _mm_mullo_epi32(v[6], cospi16);
+  x = _mm_mullo_epi32(v[7], cospim48);
+  u[7] = _mm_sub_epi32(u[7], x);
+  u[7] = _mm_add_epi32(u[7], rnding);
+  u[7] = _mm_srai_epi32(u[7], bit);
+
+  // stage 5
+  addsub_sse4_1(u[0], u[2], &v[0], &v[2], &clamp_lo, &clamp_hi);
+  addsub_sse4_1(u[1], u[3], &v[1], &v[3], &clamp_lo, &clamp_hi);
+  addsub_sse4_1(u[4], u[6], &v[4], &v[6], &clamp_lo, &clamp_hi);
+  addsub_sse4_1(u[5], u[7], &v[5], &v[7], &clamp_lo, &clamp_hi);
+
+  // stage 6
+  u[0] = v[0];
+  u[1] = v[1];
+  u[4] = v[4];
+  u[5] = v[5];
+
+  v[0] = _mm_mullo_epi32(v[2], cospi32);
+  x = _mm_mullo_epi32(v[3], cospi32);
+  u[2] = _mm_add_epi32(v[0], x);
+  u[2] = _mm_add_epi32(u[2], rnding);
+  u[2] = _mm_srai_epi32(u[2], bit);
+
+  u[3] = _mm_sub_epi32(v[0], x);
+  u[3] = _mm_add_epi32(u[3], rnding);
+  u[3] = _mm_srai_epi32(u[3], bit);
+
+  v[0] = _mm_mullo_epi32(v[6], cospi32);
+  x = _mm_mullo_epi32(v[7], cospi32);
+  u[6] = _mm_add_epi32(v[0], x);
+  u[6] = _mm_add_epi32(u[6], rnding);
+  u[6] = _mm_srai_epi32(u[6], bit);
+
+  u[7] = _mm_sub_epi32(v[0], x);
+  u[7] = _mm_add_epi32(u[7], rnding);
+  u[7] = _mm_srai_epi32(u[7], bit);
+
+  // stage 7
+  if (do_cols) {
+    out[0] = u[0];
+    out[1] = _mm_sub_epi32(kZero, u[4]);
+    out[2] = u[6];
+    out[3] = _mm_sub_epi32(kZero, u[2]);
+    out[4] = u[3];
+    out[5] = _mm_sub_epi32(kZero, u[7]);
+    out[6] = u[5];
+    out[7] = _mm_sub_epi32(kZero, u[1]);
+  } else {
+    const int log_range_out = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo_out = _mm_set1_epi32(-(1 << (log_range_out - 1)));
+    const __m128i clamp_hi_out = _mm_set1_epi32((1 << (log_range_out - 1)) - 1);
+
+    neg_shift_sse4_1(u[0], u[4], out + 0, out + 1, &clamp_lo_out, &clamp_hi_out,
+                     out_shift);
+    neg_shift_sse4_1(u[6], u[2], out + 2, out + 3, &clamp_lo_out, &clamp_hi_out,
+                     out_shift);
+    neg_shift_sse4_1(u[3], u[7], out + 4, out + 5, &clamp_lo_out, &clamp_hi_out,
+                     out_shift);
+    neg_shift_sse4_1(u[5], u[1], out + 6, out + 7, &clamp_lo_out, &clamp_hi_out,
+                     out_shift);
   }
+}
 
-  if (flipud) {
-    swap_addr(&leftUp, &leftDown);
-    swap_addr(&rightUp, &rightDown);
+static void idct16x16_low1_sse4_1(__m128i *in, __m128i *out, int bit,
+                                  int do_cols, int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+
+  {
+    // stage 0
+    // stage 1
+    // stage 2
+    // stage 3
+    // stage 4
+    in[0] = _mm_mullo_epi32(in[0], cospi32);
+    in[0] = _mm_add_epi32(in[0], rnding);
+    in[0] = _mm_srai_epi32(in[0], bit);
+
+    // stage 5
+    // stage 6
+    // stage 7
+    if (do_cols) {
+      in[0] = _mm_max_epi32(in[0], clamp_lo);
+      in[0] = _mm_min_epi32(in[0], clamp_hi);
+    } else {
+      const int log_range_out = AOMMAX(16, bd + 6);
+      const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+          -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+      const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+          (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+      __m128i offset = _mm_set1_epi32((1 << out_shift) >> 1);
+      in[0] = _mm_add_epi32(in[0], offset);
+      in[0] = _mm_sra_epi32(in[0], _mm_cvtsi32_si128(out_shift));
+      in[0] = _mm_max_epi32(in[0], clamp_lo_out);
+      in[0] = _mm_min_epi32(in[0], clamp_hi_out);
+    }
+
+    out[0] = in[0];
+    out[1] = in[0];
+    out[2] = in[0];
+    out[3] = in[0];
+    out[4] = in[0];
+    out[5] = in[0];
+    out[6] = in[0];
+    out[7] = in[0];
+    out[8] = in[0];
+    out[9] = in[0];
+    out[10] = in[0];
+    out[11] = in[0];
+    out[12] = in[0];
+    out[13] = in[0];
+    out[14] = in[0];
+    out[15] = in[0];
   }
+}
 
-  // Left-up quarter
-  assign_8x8_input_from_16x16(in, in8x8, 0);
-  write_buffer_8x8(in8x8, leftUp, stride, fliplr, flipud, shift, bd);
+static void idct16x16_low8_sse4_1(__m128i *in, __m128i *out, int bit,
+                                  int do_cols, int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi60 = _mm_set1_epi32(cospi[60]);
+  const __m128i cospi28 = _mm_set1_epi32(cospi[28]);
+  const __m128i cospi44 = _mm_set1_epi32(cospi[44]);
+  const __m128i cospi20 = _mm_set1_epi32(cospi[20]);
+  const __m128i cospi12 = _mm_set1_epi32(cospi[12]);
+  const __m128i cospi4 = _mm_set1_epi32(cospi[4]);
+  const __m128i cospi56 = _mm_set1_epi32(cospi[56]);
+  const __m128i cospi24 = _mm_set1_epi32(cospi[24]);
+  const __m128i cospim40 = _mm_set1_epi32(-cospi[40]);
+  const __m128i cospi8 = _mm_set1_epi32(cospi[8]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i cospim16 = _mm_set1_epi32(-cospi[16]);
+  const __m128i cospim48 = _mm_set1_epi32(-cospi[48]);
+  const __m128i cospim36 = _mm_set1_epi32(-cospi[36]);
+  const __m128i cospim52 = _mm_set1_epi32(-cospi[52]);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+  __m128i u[16], x, y;
+
+  {
+    // stage 0
+    // stage 1
+    u[0] = in[0];
+    u[2] = in[4];
+    u[4] = in[2];
+    u[6] = in[6];
+    u[8] = in[1];
+    u[10] = in[5];
+    u[12] = in[3];
+    u[14] = in[7];
+
+    // stage 2
+    u[15] = half_btf_0_sse4_1(&cospi4, &u[8], &rnding, bit);
+    u[8] = half_btf_0_sse4_1(&cospi60, &u[8], &rnding, bit);
+
+    u[9] = half_btf_0_sse4_1(&cospim36, &u[14], &rnding, bit);
+    u[14] = half_btf_0_sse4_1(&cospi28, &u[14], &rnding, bit);
+
+    u[13] = half_btf_0_sse4_1(&cospi20, &u[10], &rnding, bit);
+    u[10] = half_btf_0_sse4_1(&cospi44, &u[10], &rnding, bit);
+
+    u[11] = half_btf_0_sse4_1(&cospim52, &u[12], &rnding, bit);
+    u[12] = half_btf_0_sse4_1(&cospi12, &u[12], &rnding, bit);
+
+    // stage 3
+    u[7] = half_btf_0_sse4_1(&cospi8, &u[4], &rnding, bit);
+    u[4] = half_btf_0_sse4_1(&cospi56, &u[4], &rnding, bit);
+    u[5] = half_btf_0_sse4_1(&cospim40, &u[6], &rnding, bit);
+    u[6] = half_btf_0_sse4_1(&cospi24, &u[6], &rnding, bit);
+
+    addsub_sse4_1(u[8], u[9], &u[8], &u[9], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[11], u[10], &u[11], &u[10], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[12], u[13], &u[12], &u[13], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[15], u[14], &u[15], &u[14], &clamp_lo, &clamp_hi);
+
+    // stage 4
+    x = _mm_mullo_epi32(u[0], cospi32);
+    u[0] = _mm_add_epi32(x, rnding);
+    u[0] = _mm_srai_epi32(u[0], bit);
+    u[1] = u[0];
 
-  // Right-up quarter
-  assign_8x8_input_from_16x16(in, in8x8, 2);
-  write_buffer_8x8(in8x8, rightUp, stride, fliplr, flipud, shift, bd);
+    u[3] = half_btf_0_sse4_1(&cospi16, &u[2], &rnding, bit);
+    u[2] = half_btf_0_sse4_1(&cospi48, &u[2], &rnding, bit);
 
-  // Left-down quarter
-  assign_8x8_input_from_16x16(in, in8x8, 32);
-  write_buffer_8x8(in8x8, leftDown, stride, fliplr, flipud, shift, bd);
+    addsub_sse4_1(u[4], u[5], &u[4], &u[5], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[7], u[6], &u[7], &u[6], &clamp_lo, &clamp_hi);
 
-  // Right-down quarter
-  assign_8x8_input_from_16x16(in, in8x8, 34);
-  write_buffer_8x8(in8x8, rightDown, stride, fliplr, flipud, shift, bd);
+    x = half_btf_sse4_1(&cospim16, &u[9], &cospi48, &u[14], &rnding, bit);
+    u[14] = half_btf_sse4_1(&cospi48, &u[9], &cospi16, &u[14], &rnding, bit);
+    u[9] = x;
+    y = half_btf_sse4_1(&cospim48, &u[10], &cospim16, &u[13], &rnding, bit);
+    u[13] = half_btf_sse4_1(&cospim16, &u[10], &cospi48, &u[13], &rnding, bit);
+    u[10] = y;
+
+    // stage 5
+    addsub_sse4_1(u[0], u[3], &u[0], &u[3], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[1], u[2], &u[1], &u[2], &clamp_lo, &clamp_hi);
+
+    x = _mm_mullo_epi32(u[5], cospi32);
+    y = _mm_mullo_epi32(u[6], cospi32);
+    u[5] = _mm_sub_epi32(y, x);
+    u[5] = _mm_add_epi32(u[5], rnding);
+    u[5] = _mm_srai_epi32(u[5], bit);
+
+    u[6] = _mm_add_epi32(y, x);
+    u[6] = _mm_add_epi32(u[6], rnding);
+    u[6] = _mm_srai_epi32(u[6], bit);
+
+    addsub_sse4_1(u[8], u[11], &u[8], &u[11], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[9], u[10], &u[9], &u[10], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[15], u[12], &u[15], &u[12], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[14], u[13], &u[14], &u[13], &clamp_lo, &clamp_hi);
+
+    // stage 6
+    addsub_sse4_1(u[0], u[7], &u[0], &u[7], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[1], u[6], &u[1], &u[6], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[2], u[5], &u[2], &u[5], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[3], u[4], &u[3], &u[4], &clamp_lo, &clamp_hi);
+
+    x = _mm_mullo_epi32(u[10], cospi32);
+    y = _mm_mullo_epi32(u[13], cospi32);
+    u[10] = _mm_sub_epi32(y, x);
+    u[10] = _mm_add_epi32(u[10], rnding);
+    u[10] = _mm_srai_epi32(u[10], bit);
+
+    u[13] = _mm_add_epi32(x, y);
+    u[13] = _mm_add_epi32(u[13], rnding);
+    u[13] = _mm_srai_epi32(u[13], bit);
+
+    x = _mm_mullo_epi32(u[11], cospi32);
+    y = _mm_mullo_epi32(u[12], cospi32);
+    u[11] = _mm_sub_epi32(y, x);
+    u[11] = _mm_add_epi32(u[11], rnding);
+    u[11] = _mm_srai_epi32(u[11], bit);
+
+    u[12] = _mm_add_epi32(x, y);
+    u[12] = _mm_add_epi32(u[12], rnding);
+    u[12] = _mm_srai_epi32(u[12], bit);
+    // stage 7
+    if (do_cols) {
+      addsub_no_clamp_sse4_1(u[0], u[15], out + 0, out + 15);
+      addsub_no_clamp_sse4_1(u[1], u[14], out + 1, out + 14);
+      addsub_no_clamp_sse4_1(u[2], u[13], out + 2, out + 13);
+      addsub_no_clamp_sse4_1(u[3], u[12], out + 3, out + 12);
+      addsub_no_clamp_sse4_1(u[4], u[11], out + 4, out + 11);
+      addsub_no_clamp_sse4_1(u[5], u[10], out + 5, out + 10);
+      addsub_no_clamp_sse4_1(u[6], u[9], out + 6, out + 9);
+      addsub_no_clamp_sse4_1(u[7], u[8], out + 7, out + 8);
+    } else {
+      const int log_range_out = AOMMAX(16, bd + 6);
+      const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+          -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+      const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+          (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+
+      addsub_shift_sse4_1(u[0], u[15], out + 0, out + 15, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(u[1], u[14], out + 1, out + 14, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(u[2], u[13], out + 2, out + 13, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(u[3], u[12], out + 3, out + 12, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(u[4], u[11], out + 4, out + 11, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(u[5], u[10], out + 5, out + 10, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(u[6], u[9], out + 6, out + 9, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(u[7], u[8], out + 7, out + 8, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+    }
+  }
+}
+
+static void iadst16x16_low1_sse4_1(__m128i *in, __m128i *out, int bit,
+                                   int do_cols, int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi2 = _mm_set1_epi32(cospi[2]);
+  const __m128i cospi62 = _mm_set1_epi32(cospi[62]);
+  const __m128i cospi8 = _mm_set1_epi32(cospi[8]);
+  const __m128i cospi56 = _mm_set1_epi32(cospi[56]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const __m128i zero = _mm_setzero_si128();
+  __m128i v[16], x, y, temp1, temp2;
+
+  // Calculate the column 0, 1, 2, 3
+  {
+    // stage 0
+    // stage 1
+    // stage 2
+    x = _mm_mullo_epi32(in[0], cospi62);
+    v[0] = _mm_add_epi32(x, rnding);
+    v[0] = _mm_srai_epi32(v[0], bit);
+
+    x = _mm_mullo_epi32(in[0], cospi2);
+    v[1] = _mm_sub_epi32(zero, x);
+    v[1] = _mm_add_epi32(v[1], rnding);
+    v[1] = _mm_srai_epi32(v[1], bit);
+
+    // stage 3
+    v[8] = v[0];
+    v[9] = v[1];
+
+    // stage 4
+    temp1 = _mm_mullo_epi32(v[8], cospi8);
+    x = _mm_mullo_epi32(v[9], cospi56);
+    temp1 = _mm_add_epi32(temp1, x);
+    temp1 = _mm_add_epi32(temp1, rnding);
+    temp1 = _mm_srai_epi32(temp1, bit);
+
+    temp2 = _mm_mullo_epi32(v[8], cospi56);
+    x = _mm_mullo_epi32(v[9], cospi8);
+    temp2 = _mm_sub_epi32(temp2, x);
+    temp2 = _mm_add_epi32(temp2, rnding);
+    temp2 = _mm_srai_epi32(temp2, bit);
+    v[8] = temp1;
+    v[9] = temp2;
+
+    // stage 5
+    v[4] = v[0];
+    v[5] = v[1];
+    v[12] = v[8];
+    v[13] = v[9];
+
+    // stage 6
+    temp1 = _mm_mullo_epi32(v[4], cospi16);
+    x = _mm_mullo_epi32(v[5], cospi48);
+    temp1 = _mm_add_epi32(temp1, x);
+    temp1 = _mm_add_epi32(temp1, rnding);
+    temp1 = _mm_srai_epi32(temp1, bit);
+
+    temp2 = _mm_mullo_epi32(v[4], cospi48);
+    x = _mm_mullo_epi32(v[5], cospi16);
+    temp2 = _mm_sub_epi32(temp2, x);
+    temp2 = _mm_add_epi32(temp2, rnding);
+    temp2 = _mm_srai_epi32(temp2, bit);
+    v[4] = temp1;
+    v[5] = temp2;
+
+    temp1 = _mm_mullo_epi32(v[12], cospi16);
+    x = _mm_mullo_epi32(v[13], cospi48);
+    temp1 = _mm_add_epi32(temp1, x);
+    temp1 = _mm_add_epi32(temp1, rnding);
+    temp1 = _mm_srai_epi32(temp1, bit);
+
+    temp2 = _mm_mullo_epi32(v[12], cospi48);
+    x = _mm_mullo_epi32(v[13], cospi16);
+    temp2 = _mm_sub_epi32(temp2, x);
+    temp2 = _mm_add_epi32(temp2, rnding);
+    temp2 = _mm_srai_epi32(temp2, bit);
+    v[12] = temp1;
+    v[13] = temp2;
+
+    // stage 7
+    v[2] = v[0];
+    v[3] = v[1];
+    v[6] = v[4];
+    v[7] = v[5];
+    v[10] = v[8];
+    v[11] = v[9];
+    v[14] = v[12];
+    v[15] = v[13];
+
+    // stage 8
+    y = _mm_mullo_epi32(v[2], cospi32);
+    x = _mm_mullo_epi32(v[3], cospi32);
+    v[2] = _mm_add_epi32(y, x);
+    v[2] = _mm_add_epi32(v[2], rnding);
+    v[2] = _mm_srai_epi32(v[2], bit);
+
+    v[3] = _mm_sub_epi32(y, x);
+    v[3] = _mm_add_epi32(v[3], rnding);
+    v[3] = _mm_srai_epi32(v[3], bit);
+
+    y = _mm_mullo_epi32(v[6], cospi32);
+    x = _mm_mullo_epi32(v[7], cospi32);
+    v[6] = _mm_add_epi32(y, x);
+    v[6] = _mm_add_epi32(v[6], rnding);
+    v[6] = _mm_srai_epi32(v[6], bit);
+
+    v[7] = _mm_sub_epi32(y, x);
+    v[7] = _mm_add_epi32(v[7], rnding);
+    v[7] = _mm_srai_epi32(v[7], bit);
+
+    y = _mm_mullo_epi32(v[10], cospi32);
+    x = _mm_mullo_epi32(v[11], cospi32);
+    v[10] = _mm_add_epi32(y, x);
+    v[10] = _mm_add_epi32(v[10], rnding);
+    v[10] = _mm_srai_epi32(v[10], bit);
+
+    v[11] = _mm_sub_epi32(y, x);
+    v[11] = _mm_add_epi32(v[11], rnding);
+    v[11] = _mm_srai_epi32(v[11], bit);
+
+    y = _mm_mullo_epi32(v[14], cospi32);
+    x = _mm_mullo_epi32(v[15], cospi32);
+    v[14] = _mm_add_epi32(y, x);
+    v[14] = _mm_add_epi32(v[14], rnding);
+    v[14] = _mm_srai_epi32(v[14], bit);
+
+    v[15] = _mm_sub_epi32(y, x);
+    v[15] = _mm_add_epi32(v[15], rnding);
+    v[15] = _mm_srai_epi32(v[15], bit);
+
+    // stage 9
+    if (do_cols) {
+      out[0] = v[0];
+      out[1] = _mm_sub_epi32(_mm_setzero_si128(), v[8]);
+      out[2] = v[12];
+      out[3] = _mm_sub_epi32(_mm_setzero_si128(), v[4]);
+      out[4] = v[6];
+      out[5] = _mm_sub_epi32(_mm_setzero_si128(), v[14]);
+      out[6] = v[10];
+      out[7] = _mm_sub_epi32(_mm_setzero_si128(), v[2]);
+      out[8] = v[3];
+      out[9] = _mm_sub_epi32(_mm_setzero_si128(), v[11]);
+      out[10] = v[15];
+      out[11] = _mm_sub_epi32(_mm_setzero_si128(), v[7]);
+      out[12] = v[5];
+      out[13] = _mm_sub_epi32(_mm_setzero_si128(), v[13]);
+      out[14] = v[9];
+      out[15] = _mm_sub_epi32(_mm_setzero_si128(), v[1]);
+    } else {
+      const int log_range_out = AOMMAX(16, bd + 6);
+      const __m128i clamp_lo_out = _mm_set1_epi32(-(1 << (log_range_out - 1)));
+      const __m128i clamp_hi_out =
+          _mm_set1_epi32((1 << (log_range_out - 1)) - 1);
+
+      neg_shift_sse4_1(v[0], v[8], out + 0, out + 1, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[12], v[4], out + 2, out + 3, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[6], v[14], out + 4, out + 5, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[10], v[2], out + 6, out + 7, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[3], v[11], out + 8, out + 9, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[15], v[7], out + 10, out + 11, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[5], v[13], out + 12, out + 13, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[9], v[1], out + 14, out + 15, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+    }
+  }
+}
+
+static void iadst16x16_low8_sse4_1(__m128i *in, __m128i *out, int bit,
+                                   int do_cols, int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi2 = _mm_set1_epi32(cospi[2]);
+  const __m128i cospi62 = _mm_set1_epi32(cospi[62]);
+  const __m128i cospi10 = _mm_set1_epi32(cospi[10]);
+  const __m128i cospi54 = _mm_set1_epi32(cospi[54]);
+  const __m128i cospi18 = _mm_set1_epi32(cospi[18]);
+  const __m128i cospi46 = _mm_set1_epi32(cospi[46]);
+  const __m128i cospi26 = _mm_set1_epi32(cospi[26]);
+  const __m128i cospi38 = _mm_set1_epi32(cospi[38]);
+  const __m128i cospi34 = _mm_set1_epi32(cospi[34]);
+  const __m128i cospi30 = _mm_set1_epi32(cospi[30]);
+  const __m128i cospi42 = _mm_set1_epi32(cospi[42]);
+  const __m128i cospi22 = _mm_set1_epi32(cospi[22]);
+  const __m128i cospi50 = _mm_set1_epi32(cospi[50]);
+  const __m128i cospi14 = _mm_set1_epi32(cospi[14]);
+  const __m128i cospi58 = _mm_set1_epi32(cospi[58]);
+  const __m128i cospi6 = _mm_set1_epi32(cospi[6]);
+  const __m128i cospi8 = _mm_set1_epi32(cospi[8]);
+  const __m128i cospi56 = _mm_set1_epi32(cospi[56]);
+  const __m128i cospi40 = _mm_set1_epi32(cospi[40]);
+  const __m128i cospi24 = _mm_set1_epi32(cospi[24]);
+  const __m128i cospim56 = _mm_set1_epi32(-cospi[56]);
+  const __m128i cospim24 = _mm_set1_epi32(-cospi[24]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i cospim48 = _mm_set1_epi32(-cospi[48]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+  __m128i u[16], x, y;
+
+  // Calculate the column 0, 1, 2, 3
+  {
+    // stage 0
+    // stage 1
+    // stage 2
+    __m128i zero = _mm_setzero_si128();
+    x = _mm_mullo_epi32(in[0], cospi62);
+    u[0] = _mm_add_epi32(x, rnding);
+    u[0] = _mm_srai_epi32(u[0], bit);
+
+    x = _mm_mullo_epi32(in[0], cospi2);
+    u[1] = _mm_sub_epi32(zero, x);
+    u[1] = _mm_add_epi32(u[1], rnding);
+    u[1] = _mm_srai_epi32(u[1], bit);
+
+    x = _mm_mullo_epi32(in[2], cospi54);
+    u[2] = _mm_add_epi32(x, rnding);
+    u[2] = _mm_srai_epi32(u[2], bit);
+
+    x = _mm_mullo_epi32(in[2], cospi10);
+    u[3] = _mm_sub_epi32(zero, x);
+    u[3] = _mm_add_epi32(u[3], rnding);
+    u[3] = _mm_srai_epi32(u[3], bit);
+
+    x = _mm_mullo_epi32(in[4], cospi46);
+    u[4] = _mm_add_epi32(x, rnding);
+    u[4] = _mm_srai_epi32(u[4], bit);
+
+    x = _mm_mullo_epi32(in[4], cospi18);
+    u[5] = _mm_sub_epi32(zero, x);
+    u[5] = _mm_add_epi32(u[5], rnding);
+    u[5] = _mm_srai_epi32(u[5], bit);
+
+    x = _mm_mullo_epi32(in[6], cospi38);
+    u[6] = _mm_add_epi32(x, rnding);
+    u[6] = _mm_srai_epi32(u[6], bit);
+
+    x = _mm_mullo_epi32(in[6], cospi26);
+    u[7] = _mm_sub_epi32(zero, x);
+    u[7] = _mm_add_epi32(u[7], rnding);
+    u[7] = _mm_srai_epi32(u[7], bit);
+
+    u[8] = _mm_mullo_epi32(in[7], cospi34);
+    u[8] = _mm_add_epi32(u[8], rnding);
+    u[8] = _mm_srai_epi32(u[8], bit);
+
+    u[9] = _mm_mullo_epi32(in[7], cospi30);
+    u[9] = _mm_add_epi32(u[9], rnding);
+    u[9] = _mm_srai_epi32(u[9], bit);
+
+    u[10] = _mm_mullo_epi32(in[5], cospi42);
+    u[10] = _mm_add_epi32(u[10], rnding);
+    u[10] = _mm_srai_epi32(u[10], bit);
+
+    u[11] = _mm_mullo_epi32(in[5], cospi22);
+    u[11] = _mm_add_epi32(u[11], rnding);
+    u[11] = _mm_srai_epi32(u[11], bit);
+
+    u[12] = _mm_mullo_epi32(in[3], cospi50);
+    u[12] = _mm_add_epi32(u[12], rnding);
+    u[12] = _mm_srai_epi32(u[12], bit);
+
+    u[13] = _mm_mullo_epi32(in[3], cospi14);
+    u[13] = _mm_add_epi32(u[13], rnding);
+    u[13] = _mm_srai_epi32(u[13], bit);
+
+    u[14] = _mm_mullo_epi32(in[1], cospi58);
+    u[14] = _mm_add_epi32(u[14], rnding);
+    u[14] = _mm_srai_epi32(u[14], bit);
+
+    u[15] = _mm_mullo_epi32(in[1], cospi6);
+    u[15] = _mm_add_epi32(u[15], rnding);
+    u[15] = _mm_srai_epi32(u[15], bit);
+
+    // stage 3
+    addsub_sse4_1(u[0], u[8], &u[0], &u[8], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[1], u[9], &u[1], &u[9], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[2], u[10], &u[2], &u[10], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[3], u[11], &u[3], &u[11], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[4], u[12], &u[4], &u[12], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[5], u[13], &u[5], &u[13], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[6], u[14], &u[6], &u[14], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[7], u[15], &u[7], &u[15], &clamp_lo, &clamp_hi);
+
+    // stage 4
+    y = _mm_mullo_epi32(u[8], cospi56);
+    x = _mm_mullo_epi32(u[9], cospi56);
+    u[8] = _mm_mullo_epi32(u[8], cospi8);
+    u[8] = _mm_add_epi32(u[8], x);
+    u[8] = _mm_add_epi32(u[8], rnding);
+    u[8] = _mm_srai_epi32(u[8], bit);
+
+    x = _mm_mullo_epi32(u[9], cospi8);
+    u[9] = _mm_sub_epi32(y, x);
+    u[9] = _mm_add_epi32(u[9], rnding);
+    u[9] = _mm_srai_epi32(u[9], bit);
+
+    x = _mm_mullo_epi32(u[11], cospi24);
+    y = _mm_mullo_epi32(u[10], cospi24);
+    u[10] = _mm_mullo_epi32(u[10], cospi40);
+    u[10] = _mm_add_epi32(u[10], x);
+    u[10] = _mm_add_epi32(u[10], rnding);
+    u[10] = _mm_srai_epi32(u[10], bit);
+
+    x = _mm_mullo_epi32(u[11], cospi40);
+    u[11] = _mm_sub_epi32(y, x);
+    u[11] = _mm_add_epi32(u[11], rnding);
+    u[11] = _mm_srai_epi32(u[11], bit);
+
+    x = _mm_mullo_epi32(u[13], cospi8);
+    y = _mm_mullo_epi32(u[12], cospi8);
+    u[12] = _mm_mullo_epi32(u[12], cospim56);
+    u[12] = _mm_add_epi32(u[12], x);
+    u[12] = _mm_add_epi32(u[12], rnding);
+    u[12] = _mm_srai_epi32(u[12], bit);
+
+    x = _mm_mullo_epi32(u[13], cospim56);
+    u[13] = _mm_sub_epi32(y, x);
+    u[13] = _mm_add_epi32(u[13], rnding);
+    u[13] = _mm_srai_epi32(u[13], bit);
+
+    x = _mm_mullo_epi32(u[15], cospi40);
+    y = _mm_mullo_epi32(u[14], cospi40);
+    u[14] = _mm_mullo_epi32(u[14], cospim24);
+    u[14] = _mm_add_epi32(u[14], x);
+    u[14] = _mm_add_epi32(u[14], rnding);
+    u[14] = _mm_srai_epi32(u[14], bit);
+
+    x = _mm_mullo_epi32(u[15], cospim24);
+    u[15] = _mm_sub_epi32(y, x);
+    u[15] = _mm_add_epi32(u[15], rnding);
+    u[15] = _mm_srai_epi32(u[15], bit);
+
+    // stage 5
+    addsub_sse4_1(u[0], u[4], &u[0], &u[4], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[1], u[5], &u[1], &u[5], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[2], u[6], &u[2], &u[6], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[3], u[7], &u[3], &u[7], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[8], u[12], &u[8], &u[12], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[9], u[13], &u[9], &u[13], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[10], u[14], &u[10], &u[14], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[11], u[15], &u[11], &u[15], &clamp_lo, &clamp_hi);
+
+    // stage 6
+    x = _mm_mullo_epi32(u[5], cospi48);
+    y = _mm_mullo_epi32(u[4], cospi48);
+    u[4] = _mm_mullo_epi32(u[4], cospi16);
+    u[4] = _mm_add_epi32(u[4], x);
+    u[4] = _mm_add_epi32(u[4], rnding);
+    u[4] = _mm_srai_epi32(u[4], bit);
+
+    x = _mm_mullo_epi32(u[5], cospi16);
+    u[5] = _mm_sub_epi32(y, x);
+    u[5] = _mm_add_epi32(u[5], rnding);
+    u[5] = _mm_srai_epi32(u[5], bit);
+
+    x = _mm_mullo_epi32(u[7], cospi16);
+    y = _mm_mullo_epi32(u[6], cospi16);
+    u[6] = _mm_mullo_epi32(u[6], cospim48);
+    u[6] = _mm_add_epi32(u[6], x);
+    u[6] = _mm_add_epi32(u[6], rnding);
+    u[6] = _mm_srai_epi32(u[6], bit);
+
+    x = _mm_mullo_epi32(u[7], cospim48);
+    u[7] = _mm_sub_epi32(y, x);
+    u[7] = _mm_add_epi32(u[7], rnding);
+    u[7] = _mm_srai_epi32(u[7], bit);
+
+    x = _mm_mullo_epi32(u[13], cospi48);
+    y = _mm_mullo_epi32(u[12], cospi48);
+    u[12] = _mm_mullo_epi32(u[12], cospi16);
+    u[12] = _mm_add_epi32(u[12], x);
+    u[12] = _mm_add_epi32(u[12], rnding);
+    u[12] = _mm_srai_epi32(u[12], bit);
+
+    x = _mm_mullo_epi32(u[13], cospi16);
+    u[13] = _mm_sub_epi32(y, x);
+    u[13] = _mm_add_epi32(u[13], rnding);
+    u[13] = _mm_srai_epi32(u[13], bit);
+
+    x = _mm_mullo_epi32(u[15], cospi16);
+    y = _mm_mullo_epi32(u[14], cospi16);
+    u[14] = _mm_mullo_epi32(u[14], cospim48);
+    u[14] = _mm_add_epi32(u[14], x);
+    u[14] = _mm_add_epi32(u[14], rnding);
+    u[14] = _mm_srai_epi32(u[14], bit);
+
+    x = _mm_mullo_epi32(u[15], cospim48);
+    u[15] = _mm_sub_epi32(y, x);
+    u[15] = _mm_add_epi32(u[15], rnding);
+    u[15] = _mm_srai_epi32(u[15], bit);
+
+    // stage 7
+    addsub_sse4_1(u[0], u[2], &u[0], &u[2], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[1], u[3], &u[1], &u[3], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[4], u[6], &u[4], &u[6], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[5], u[7], &u[5], &u[7], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[8], u[10], &u[8], &u[10], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[9], u[11], &u[9], &u[11], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[12], u[14], &u[12], &u[14], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[13], u[15], &u[13], &u[15], &clamp_lo, &clamp_hi);
+
+    // stage 8
+    y = _mm_mullo_epi32(u[2], cospi32);
+    x = _mm_mullo_epi32(u[3], cospi32);
+    u[2] = _mm_add_epi32(y, x);
+    u[2] = _mm_add_epi32(u[2], rnding);
+    u[2] = _mm_srai_epi32(u[2], bit);
+
+    u[3] = _mm_sub_epi32(y, x);
+    u[3] = _mm_add_epi32(u[3], rnding);
+    u[3] = _mm_srai_epi32(u[3], bit);
+    y = _mm_mullo_epi32(u[6], cospi32);
+    x = _mm_mullo_epi32(u[7], cospi32);
+    u[6] = _mm_add_epi32(y, x);
+    u[6] = _mm_add_epi32(u[6], rnding);
+    u[6] = _mm_srai_epi32(u[6], bit);
+
+    u[7] = _mm_sub_epi32(y, x);
+    u[7] = _mm_add_epi32(u[7], rnding);
+    u[7] = _mm_srai_epi32(u[7], bit);
+
+    y = _mm_mullo_epi32(u[10], cospi32);
+    x = _mm_mullo_epi32(u[11], cospi32);
+    u[10] = _mm_add_epi32(y, x);
+    u[10] = _mm_add_epi32(u[10], rnding);
+    u[10] = _mm_srai_epi32(u[10], bit);
+
+    u[11] = _mm_sub_epi32(y, x);
+    u[11] = _mm_add_epi32(u[11], rnding);
+    u[11] = _mm_srai_epi32(u[11], bit);
+
+    y = _mm_mullo_epi32(u[14], cospi32);
+    x = _mm_mullo_epi32(u[15], cospi32);
+    u[14] = _mm_add_epi32(y, x);
+    u[14] = _mm_add_epi32(u[14], rnding);
+    u[14] = _mm_srai_epi32(u[14], bit);
+
+    u[15] = _mm_sub_epi32(y, x);
+    u[15] = _mm_add_epi32(u[15], rnding);
+    u[15] = _mm_srai_epi32(u[15], bit);
+
+    // stage 9
+    if (do_cols) {
+      out[0] = u[0];
+      out[1] = _mm_sub_epi32(_mm_setzero_si128(), u[8]);
+      out[2] = u[12];
+      out[3] = _mm_sub_epi32(_mm_setzero_si128(), u[4]);
+      out[4] = u[6];
+      out[5] = _mm_sub_epi32(_mm_setzero_si128(), u[14]);
+      out[6] = u[10];
+      out[7] = _mm_sub_epi32(_mm_setzero_si128(), u[2]);
+      out[8] = u[3];
+      out[9] = _mm_sub_epi32(_mm_setzero_si128(), u[11]);
+      out[10] = u[15];
+      out[11] = _mm_sub_epi32(_mm_setzero_si128(), u[7]);
+      out[12] = u[5];
+      out[13] = _mm_sub_epi32(_mm_setzero_si128(), u[13]);
+      out[14] = u[9];
+      out[15] = _mm_sub_epi32(_mm_setzero_si128(), u[1]);
+    } else {
+      const int log_range_out = AOMMAX(16, bd + 6);
+      const __m128i clamp_lo_out = _mm_set1_epi32(-(1 << (log_range_out - 1)));
+      const __m128i clamp_hi_out =
+          _mm_set1_epi32((1 << (log_range_out - 1)) - 1);
+
+      neg_shift_sse4_1(u[0], u[8], out + 0, out + 1, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(u[12], u[4], out + 2, out + 3, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(u[6], u[14], out + 4, out + 5, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(u[10], u[2], out + 6, out + 7, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(u[3], u[11], out + 8, out + 9, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(u[15], u[7], out + 10, out + 11, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(u[5], u[13], out + 12, out + 13, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(u[9], u[1], out + 14, out + 15, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+    }
+  }
 }
 
 static void idct16x16_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
@@ -1067,27 +2426,26 @@ static void idct16x16_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
   const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
   const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
   __m128i u[16], v[16], x, y;
-  int col;
 
-  for (col = 0; col < 4; ++col) {
+  {
     // stage 0
     // stage 1
-    u[0] = in[0 * 4 + col];
-    u[1] = in[8 * 4 + col];
-    u[2] = in[4 * 4 + col];
-    u[3] = in[12 * 4 + col];
-    u[4] = in[2 * 4 + col];
-    u[5] = in[10 * 4 + col];
-    u[6] = in[6 * 4 + col];
-    u[7] = in[14 * 4 + col];
-    u[8] = in[1 * 4 + col];
-    u[9] = in[9 * 4 + col];
-    u[10] = in[5 * 4 + col];
-    u[11] = in[13 * 4 + col];
-    u[12] = in[3 * 4 + col];
-    u[13] = in[11 * 4 + col];
-    u[14] = in[7 * 4 + col];
-    u[15] = in[15 * 4 + col];
+    u[0] = in[0];
+    u[1] = in[8];
+    u[2] = in[4];
+    u[3] = in[12];
+    u[4] = in[2];
+    u[5] = in[10];
+    u[6] = in[6];
+    u[7] = in[14];
+    u[8] = in[1];
+    u[9] = in[9];
+    u[10] = in[5];
+    u[11] = in[13];
+    u[12] = in[3];
+    u[13] = in[11];
+    u[14] = in[7];
+    u[15] = in[15];
 
     // stage 2
     v[0] = u[0];
@@ -1200,37 +2558,37 @@ static void idct16x16_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
 
     // stage 7
     if (do_cols) {
-      addsub_no_clamp_sse4_1(v[0], v[15], out + 0 * 4 + col,
-                             out + 15 * 4 + col);
-      addsub_no_clamp_sse4_1(v[1], v[14], out + 1 * 4 + col,
-                             out + 14 * 4 + col);
-      addsub_no_clamp_sse4_1(v[2], v[13], out + 2 * 4 + col,
-                             out + 13 * 4 + col);
-      addsub_no_clamp_sse4_1(v[3], v[12], out + 3 * 4 + col,
-                             out + 12 * 4 + col);
-      addsub_no_clamp_sse4_1(v[4], v[11], out + 4 * 4 + col,
-                             out + 11 * 4 + col);
-      addsub_no_clamp_sse4_1(v[5], v[10], out + 5 * 4 + col,
-                             out + 10 * 4 + col);
-      addsub_no_clamp_sse4_1(v[6], v[9], out + 6 * 4 + col, out + 9 * 4 + col);
-      addsub_no_clamp_sse4_1(v[7], v[8], out + 7 * 4 + col, out + 8 * 4 + col);
+      addsub_no_clamp_sse4_1(v[0], v[15], out + 0, out + 15);
+      addsub_no_clamp_sse4_1(v[1], v[14], out + 1, out + 14);
+      addsub_no_clamp_sse4_1(v[2], v[13], out + 2, out + 13);
+      addsub_no_clamp_sse4_1(v[3], v[12], out + 3, out + 12);
+      addsub_no_clamp_sse4_1(v[4], v[11], out + 4, out + 11);
+      addsub_no_clamp_sse4_1(v[5], v[10], out + 5, out + 10);
+      addsub_no_clamp_sse4_1(v[6], v[9], out + 6, out + 9);
+      addsub_no_clamp_sse4_1(v[7], v[8], out + 7, out + 8);
     } else {
-      addsub_shift_sse4_1(v[0], v[15], out + 0 * 4 + col, out + 15 * 4 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
-      addsub_shift_sse4_1(v[1], v[14], out + 1 * 4 + col, out + 14 * 4 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
-      addsub_shift_sse4_1(v[2], v[13], out + 2 * 4 + col, out + 13 * 4 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
-      addsub_shift_sse4_1(v[3], v[12], out + 3 * 4 + col, out + 12 * 4 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
-      addsub_shift_sse4_1(v[4], v[11], out + 4 * 4 + col, out + 11 * 4 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
-      addsub_shift_sse4_1(v[5], v[10], out + 5 * 4 + col, out + 10 * 4 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
-      addsub_shift_sse4_1(v[6], v[9], out + 6 * 4 + col, out + 9 * 4 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
-      addsub_shift_sse4_1(v[7], v[8], out + 7 * 4 + col, out + 8 * 4 + col,
-                          &clamp_lo, &clamp_hi, out_shift);
+      const int log_range_out = AOMMAX(16, bd + 6);
+      const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+          -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+      const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+          (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+
+      addsub_shift_sse4_1(v[0], v[15], out + 0, out + 15, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(v[1], v[14], out + 1, out + 14, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(v[2], v[13], out + 2, out + 13, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(v[3], v[12], out + 3, out + 12, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(v[4], v[11], out + 4, out + 11, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(v[5], v[10], out + 5, out + 10, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(v[6], v[9], out + 6, out + 9, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
+      addsub_shift_sse4_1(v[7], v[8], out + 7, out + 8, &clamp_lo_out,
+                          &clamp_hi_out, out_shift);
     }
   }
 }
@@ -1269,106 +2627,104 @@ static void iadst16x16_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
   const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
   const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
   __m128i u[16], v[16], x, y;
-  const int col_num = 4;
-  int col;
 
   // Calculate the column 0, 1, 2, 3
-  for (col = 0; col < col_num; ++col) {
+  {
     // stage 0
     // stage 1
     // stage 2
-    v[0] = _mm_mullo_epi32(in[15 * col_num + col], cospi2);
-    x = _mm_mullo_epi32(in[0 * col_num + col], cospi62);
+    v[0] = _mm_mullo_epi32(in[15], cospi2);
+    x = _mm_mullo_epi32(in[0], cospi62);
     v[0] = _mm_add_epi32(v[0], x);
     v[0] = _mm_add_epi32(v[0], rnding);
     v[0] = _mm_srai_epi32(v[0], bit);
 
-    v[1] = _mm_mullo_epi32(in[15 * col_num + col], cospi62);
-    x = _mm_mullo_epi32(in[0 * col_num + col], cospi2);
+    v[1] = _mm_mullo_epi32(in[15], cospi62);
+    x = _mm_mullo_epi32(in[0], cospi2);
     v[1] = _mm_sub_epi32(v[1], x);
     v[1] = _mm_add_epi32(v[1], rnding);
     v[1] = _mm_srai_epi32(v[1], bit);
 
-    v[2] = _mm_mullo_epi32(in[13 * col_num + col], cospi10);
-    x = _mm_mullo_epi32(in[2 * col_num + col], cospi54);
+    v[2] = _mm_mullo_epi32(in[13], cospi10);
+    x = _mm_mullo_epi32(in[2], cospi54);
     v[2] = _mm_add_epi32(v[2], x);
     v[2] = _mm_add_epi32(v[2], rnding);
     v[2] = _mm_srai_epi32(v[2], bit);
 
-    v[3] = _mm_mullo_epi32(in[13 * col_num + col], cospi54);
-    x = _mm_mullo_epi32(in[2 * col_num + col], cospi10);
+    v[3] = _mm_mullo_epi32(in[13], cospi54);
+    x = _mm_mullo_epi32(in[2], cospi10);
     v[3] = _mm_sub_epi32(v[3], x);
     v[3] = _mm_add_epi32(v[3], rnding);
     v[3] = _mm_srai_epi32(v[3], bit);
 
-    v[4] = _mm_mullo_epi32(in[11 * col_num + col], cospi18);
-    x = _mm_mullo_epi32(in[4 * col_num + col], cospi46);
+    v[4] = _mm_mullo_epi32(in[11], cospi18);
+    x = _mm_mullo_epi32(in[4], cospi46);
     v[4] = _mm_add_epi32(v[4], x);
     v[4] = _mm_add_epi32(v[4], rnding);
     v[4] = _mm_srai_epi32(v[4], bit);
 
-    v[5] = _mm_mullo_epi32(in[11 * col_num + col], cospi46);
-    x = _mm_mullo_epi32(in[4 * col_num + col], cospi18);
+    v[5] = _mm_mullo_epi32(in[11], cospi46);
+    x = _mm_mullo_epi32(in[4], cospi18);
     v[5] = _mm_sub_epi32(v[5], x);
     v[5] = _mm_add_epi32(v[5], rnding);
     v[5] = _mm_srai_epi32(v[5], bit);
 
-    v[6] = _mm_mullo_epi32(in[9 * col_num + col], cospi26);
-    x = _mm_mullo_epi32(in[6 * col_num + col], cospi38);
+    v[6] = _mm_mullo_epi32(in[9], cospi26);
+    x = _mm_mullo_epi32(in[6], cospi38);
     v[6] = _mm_add_epi32(v[6], x);
     v[6] = _mm_add_epi32(v[6], rnding);
     v[6] = _mm_srai_epi32(v[6], bit);
 
-    v[7] = _mm_mullo_epi32(in[9 * col_num + col], cospi38);
-    x = _mm_mullo_epi32(in[6 * col_num + col], cospi26);
+    v[7] = _mm_mullo_epi32(in[9], cospi38);
+    x = _mm_mullo_epi32(in[6], cospi26);
     v[7] = _mm_sub_epi32(v[7], x);
     v[7] = _mm_add_epi32(v[7], rnding);
     v[7] = _mm_srai_epi32(v[7], bit);
 
-    v[8] = _mm_mullo_epi32(in[7 * col_num + col], cospi34);
-    x = _mm_mullo_epi32(in[8 * col_num + col], cospi30);
+    v[8] = _mm_mullo_epi32(in[7], cospi34);
+    x = _mm_mullo_epi32(in[8], cospi30);
     v[8] = _mm_add_epi32(v[8], x);
     v[8] = _mm_add_epi32(v[8], rnding);
     v[8] = _mm_srai_epi32(v[8], bit);
 
-    v[9] = _mm_mullo_epi32(in[7 * col_num + col], cospi30);
-    x = _mm_mullo_epi32(in[8 * col_num + col], cospi34);
+    v[9] = _mm_mullo_epi32(in[7], cospi30);
+    x = _mm_mullo_epi32(in[8], cospi34);
     v[9] = _mm_sub_epi32(v[9], x);
     v[9] = _mm_add_epi32(v[9], rnding);
     v[9] = _mm_srai_epi32(v[9], bit);
 
-    v[10] = _mm_mullo_epi32(in[5 * col_num + col], cospi42);
-    x = _mm_mullo_epi32(in[10 * col_num + col], cospi22);
+    v[10] = _mm_mullo_epi32(in[5], cospi42);
+    x = _mm_mullo_epi32(in[10], cospi22);
     v[10] = _mm_add_epi32(v[10], x);
     v[10] = _mm_add_epi32(v[10], rnding);
     v[10] = _mm_srai_epi32(v[10], bit);
 
-    v[11] = _mm_mullo_epi32(in[5 * col_num + col], cospi22);
-    x = _mm_mullo_epi32(in[10 * col_num + col], cospi42);
+    v[11] = _mm_mullo_epi32(in[5], cospi22);
+    x = _mm_mullo_epi32(in[10], cospi42);
     v[11] = _mm_sub_epi32(v[11], x);
     v[11] = _mm_add_epi32(v[11], rnding);
     v[11] = _mm_srai_epi32(v[11], bit);
 
-    v[12] = _mm_mullo_epi32(in[3 * col_num + col], cospi50);
-    x = _mm_mullo_epi32(in[12 * col_num + col], cospi14);
+    v[12] = _mm_mullo_epi32(in[3], cospi50);
+    x = _mm_mullo_epi32(in[12], cospi14);
     v[12] = _mm_add_epi32(v[12], x);
     v[12] = _mm_add_epi32(v[12], rnding);
     v[12] = _mm_srai_epi32(v[12], bit);
 
-    v[13] = _mm_mullo_epi32(in[3 * col_num + col], cospi14);
-    x = _mm_mullo_epi32(in[12 * col_num + col], cospi50);
+    v[13] = _mm_mullo_epi32(in[3], cospi14);
+    x = _mm_mullo_epi32(in[12], cospi50);
     v[13] = _mm_sub_epi32(v[13], x);
     v[13] = _mm_add_epi32(v[13], rnding);
     v[13] = _mm_srai_epi32(v[13], bit);
 
-    v[14] = _mm_mullo_epi32(in[1 * col_num + col], cospi58);
-    x = _mm_mullo_epi32(in[14 * col_num + col], cospi6);
+    v[14] = _mm_mullo_epi32(in[1], cospi58);
+    x = _mm_mullo_epi32(in[14], cospi6);
     v[14] = _mm_add_epi32(v[14], x);
     v[14] = _mm_add_epi32(v[14], rnding);
     v[14] = _mm_srai_epi32(v[14], bit);
 
-    v[15] = _mm_mullo_epi32(in[1 * col_num + col], cospi6);
-    x = _mm_mullo_epi32(in[14 * col_num + col], cospi58);
+    v[15] = _mm_mullo_epi32(in[1], cospi6);
+    x = _mm_mullo_epi32(in[14], cospi58);
     v[15] = _mm_sub_epi32(v[15], x);
     v[15] = _mm_add_epi32(v[15], rnding);
     v[15] = _mm_srai_epi32(v[15], bit);
@@ -1575,268 +2931,835 @@ static void iadst16x16_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
 
     // stage 9
     if (do_cols) {
-      out[0 * col_num + col] = v[0];
-      out[1 * col_num + col] = _mm_sub_epi32(_mm_setzero_si128(), v[8]);
-      out[2 * col_num + col] = v[12];
-      out[3 * col_num + col] = _mm_sub_epi32(_mm_setzero_si128(), v[4]);
-      out[4 * col_num + col] = v[6];
-      out[5 * col_num + col] = _mm_sub_epi32(_mm_setzero_si128(), v[14]);
-      out[6 * col_num + col] = v[10];
-      out[7 * col_num + col] = _mm_sub_epi32(_mm_setzero_si128(), v[2]);
-      out[8 * col_num + col] = v[3];
-      out[9 * col_num + col] = _mm_sub_epi32(_mm_setzero_si128(), v[11]);
-      out[10 * col_num + col] = v[15];
-      out[11 * col_num + col] = _mm_sub_epi32(_mm_setzero_si128(), v[7]);
-      out[12 * col_num + col] = v[5];
-      out[13 * col_num + col] = _mm_sub_epi32(_mm_setzero_si128(), v[13]);
-      out[14 * col_num + col] = v[9];
-      out[15 * col_num + col] = _mm_sub_epi32(_mm_setzero_si128(), v[1]);
+      out[0] = v[0];
+      out[1] = _mm_sub_epi32(_mm_setzero_si128(), v[8]);
+      out[2] = v[12];
+      out[3] = _mm_sub_epi32(_mm_setzero_si128(), v[4]);
+      out[4] = v[6];
+      out[5] = _mm_sub_epi32(_mm_setzero_si128(), v[14]);
+      out[6] = v[10];
+      out[7] = _mm_sub_epi32(_mm_setzero_si128(), v[2]);
+      out[8] = v[3];
+      out[9] = _mm_sub_epi32(_mm_setzero_si128(), v[11]);
+      out[10] = v[15];
+      out[11] = _mm_sub_epi32(_mm_setzero_si128(), v[7]);
+      out[12] = v[5];
+      out[13] = _mm_sub_epi32(_mm_setzero_si128(), v[13]);
+      out[14] = v[9];
+      out[15] = _mm_sub_epi32(_mm_setzero_si128(), v[1]);
     } else {
-      neg_shift_sse4_1(v[0], v[8], out + 0 * col_num + col,
-                       out + 1 * col_num + col, &clamp_lo, &clamp_hi,
-                       out_shift);
-      neg_shift_sse4_1(v[12], v[4], out + 2 * col_num + col,
-                       out + 3 * col_num + col, &clamp_lo, &clamp_hi,
-                       out_shift);
-      neg_shift_sse4_1(v[6], v[14], out + 4 * col_num + col,
-                       out + 5 * col_num + col, &clamp_lo, &clamp_hi,
-                       out_shift);
-      neg_shift_sse4_1(v[10], v[2], out + 6 * col_num + col,
-                       out + 7 * col_num + col, &clamp_lo, &clamp_hi,
-                       out_shift);
-      neg_shift_sse4_1(v[3], v[11], out + 8 * col_num + col,
-                       out + 9 * col_num + col, &clamp_lo, &clamp_hi,
-                       out_shift);
-      neg_shift_sse4_1(v[15], v[7], out + 10 * col_num + col,
-                       out + 11 * col_num + col, &clamp_lo, &clamp_hi,
-                       out_shift);
-      neg_shift_sse4_1(v[5], v[13], out + 12 * col_num + col,
-                       out + 13 * col_num + col, &clamp_lo, &clamp_hi,
-                       out_shift);
-      neg_shift_sse4_1(v[9], v[1], out + 14 * col_num + col,
-                       out + 15 * col_num + col, &clamp_lo, &clamp_hi,
-                       out_shift);
+      const int log_range_out = AOMMAX(16, bd + 6);
+      const __m128i clamp_lo_out = _mm_set1_epi32(-(1 << (log_range_out - 1)));
+      const __m128i clamp_hi_out =
+          _mm_set1_epi32((1 << (log_range_out - 1)) - 1);
+
+      neg_shift_sse4_1(v[0], v[8], out + 0, out + 1, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[12], v[4], out + 2, out + 3, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[6], v[14], out + 4, out + 5, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[10], v[2], out + 6, out + 7, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[3], v[11], out + 8, out + 9, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[15], v[7], out + 10, out + 11, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[5], v[13], out + 12, out + 13, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
+      neg_shift_sse4_1(v[9], v[1], out + 14, out + 15, &clamp_lo_out,
+                       &clamp_hi_out, out_shift);
     }
   }
 }
 
-void av1_inv_txfm2d_add_16x16_sse4_1(const int32_t *coeff, uint16_t *output,
-                                     int stride, TX_TYPE tx_type, int bd) {
-  __m128i in[64], out[64];
-  const int8_t *shift = inv_txfm_shift_ls[TX_16X16];
-  const int txw_idx = get_txw_idx(TX_16X16);
-  const int txh_idx = get_txh_idx(TX_16X16);
-
-  switch (tx_type) {
-    case DCT_DCT:
-      load_buffer_16x16(coeff, in);
-      transpose_16x16(in, out);
-      idct16x16_sse4_1(out, in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd,
-                       -shift[0]);
-      transpose_16x16(in, out);
-      idct16x16_sse4_1(out, in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
-      write_buffer_16x16(in, output, stride, 0, 0, -shift[1], bd);
-      break;
-    case DCT_ADST:
-      load_buffer_16x16(coeff, in);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd,
-                        -shift[0]);
-      transpose_16x16(in, out);
-      idct16x16_sse4_1(out, in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
-      write_buffer_16x16(in, output, stride, 0, 0, -shift[1], bd);
-      break;
-    case ADST_DCT:
-      load_buffer_16x16(coeff, in);
-      transpose_16x16(in, out);
-      idct16x16_sse4_1(out, in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd,
-                       -shift[0]);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
-      write_buffer_16x16(in, output, stride, 0, 0, -shift[1], bd);
-      break;
-    case ADST_ADST:
-      load_buffer_16x16(coeff, in);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd,
-                        -shift[0]);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
-      write_buffer_16x16(in, output, stride, 0, 0, -shift[1], bd);
-      break;
-    case FLIPADST_DCT:
-      load_buffer_16x16(coeff, in);
-      transpose_16x16(in, out);
-      idct16x16_sse4_1(out, in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd,
-                       -shift[0]);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
-      write_buffer_16x16(in, output, stride, 0, 1, -shift[1], bd);
-      break;
-    case DCT_FLIPADST:
-      load_buffer_16x16(coeff, in);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd,
-                        -shift[0]);
-      transpose_16x16(in, out);
-      idct16x16_sse4_1(out, in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
-      write_buffer_16x16(in, output, stride, 1, 0, -shift[1], bd);
-      break;
-    case ADST_FLIPADST:
-      load_buffer_16x16(coeff, in);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd,
-                        -shift[0]);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
-      write_buffer_16x16(in, output, stride, 1, 0, -shift[1], bd);
-      break;
-    case FLIPADST_FLIPADST:
-      load_buffer_16x16(coeff, in);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd,
-                        -shift[0]);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
-      write_buffer_16x16(in, output, stride, 1, 1, -shift[1], bd);
-      break;
-    case FLIPADST_ADST:
-      load_buffer_16x16(coeff, in);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd,
-                        -shift[0]);
-      transpose_16x16(in, out);
-      iadst16x16_sse4_1(out, in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
-      write_buffer_16x16(in, output, stride, 0, 1, -shift[1], bd);
-      break;
-    default: assert(0);
+static INLINE void idct64_stage8_sse4_1(
+    __m128i *u, const __m128i *cospim32, const __m128i *cospi32,
+    const __m128i *cospim16, const __m128i *cospi48, const __m128i *cospi16,
+    const __m128i *cospim48, const __m128i *clamp_lo, const __m128i *clamp_hi,
+    const __m128i *rnding, int bit) {
+  int i;
+  __m128i temp1, temp2, temp3, temp4;
+  temp1 = half_btf_sse4_1(cospim32, &u[10], cospi32, &u[13], rnding, bit);
+  u[13] = half_btf_sse4_1(cospi32, &u[10], cospi32, &u[13], rnding, bit);
+  u[10] = temp1;
+  temp2 = half_btf_sse4_1(cospim32, &u[11], cospi32, &u[12], rnding, bit);
+  u[12] = half_btf_sse4_1(cospi32, &u[11], cospi32, &u[12], rnding, bit);
+  u[11] = temp2;
+
+  for (i = 16; i < 20; ++i) {
+    addsub_sse4_1(u[i], u[i ^ 7], &u[i], &u[i ^ 7], clamp_lo, clamp_hi);
+    addsub_sse4_1(u[i ^ 15], u[i ^ 8], &u[i ^ 15], &u[i ^ 8], clamp_lo,
+                  clamp_hi);
   }
+
+  temp1 = half_btf_sse4_1(cospim16, &u[36], cospi48, &u[59], rnding, bit);
+  temp2 = half_btf_sse4_1(cospim16, &u[37], cospi48, &u[58], rnding, bit);
+  temp3 = half_btf_sse4_1(cospim16, &u[38], cospi48, &u[57], rnding, bit);
+  temp4 = half_btf_sse4_1(cospim16, &u[39], cospi48, &u[56], rnding, bit);
+  u[56] = half_btf_sse4_1(cospi48, &u[39], cospi16, &u[56], rnding, bit);
+  u[57] = half_btf_sse4_1(cospi48, &u[38], cospi16, &u[57], rnding, bit);
+  u[58] = half_btf_sse4_1(cospi48, &u[37], cospi16, &u[58], rnding, bit);
+  u[59] = half_btf_sse4_1(cospi48, &u[36], cospi16, &u[59], rnding, bit);
+  u[36] = temp1;
+  u[37] = temp2;
+  u[38] = temp3;
+  u[39] = temp4;
+
+  temp1 = half_btf_sse4_1(cospim48, &u[40], cospim16, &u[55], rnding, bit);
+  temp2 = half_btf_sse4_1(cospim48, &u[41], cospim16, &u[54], rnding, bit);
+  temp3 = half_btf_sse4_1(cospim48, &u[42], cospim16, &u[53], rnding, bit);
+  temp4 = half_btf_sse4_1(cospim48, &u[43], cospim16, &u[52], rnding, bit);
+  u[52] = half_btf_sse4_1(cospim16, &u[43], cospi48, &u[52], rnding, bit);
+  u[53] = half_btf_sse4_1(cospim16, &u[42], cospi48, &u[53], rnding, bit);
+  u[54] = half_btf_sse4_1(cospim16, &u[41], cospi48, &u[54], rnding, bit);
+  u[55] = half_btf_sse4_1(cospim16, &u[40], cospi48, &u[55], rnding, bit);
+  u[40] = temp1;
+  u[41] = temp2;
+  u[42] = temp3;
+  u[43] = temp4;
 }
 
-static void load_buffer_64x64_lower_32x32(const int32_t *coeff, __m128i *in) {
-  int i, j;
+static INLINE void idct64_stage9_sse4_1(__m128i *u, const __m128i *cospim32,
+                                        const __m128i *cospi32,
+                                        const __m128i *clamp_lo,
+                                        const __m128i *clamp_hi,
+                                        const __m128i *rnding, int bit) {
+  int i;
+  __m128i temp1, temp2, temp3, temp4;
+  for (i = 0; i < 8; ++i) {
+    addsub_sse4_1(u[i], u[15 - i], &u[i], &u[15 - i], clamp_lo, clamp_hi);
+  }
 
-  __m128i zero = _mm_setzero_si128();
+  temp1 = half_btf_sse4_1(cospim32, &u[20], cospi32, &u[27], rnding, bit);
+  temp2 = half_btf_sse4_1(cospim32, &u[21], cospi32, &u[26], rnding, bit);
+  temp3 = half_btf_sse4_1(cospim32, &u[22], cospi32, &u[25], rnding, bit);
+  temp4 = half_btf_sse4_1(cospim32, &u[23], cospi32, &u[24], rnding, bit);
+  u[24] = half_btf_sse4_1(cospi32, &u[23], cospi32, &u[24], rnding, bit);
+  u[25] = half_btf_sse4_1(cospi32, &u[22], cospi32, &u[25], rnding, bit);
+  u[26] = half_btf_sse4_1(cospi32, &u[21], cospi32, &u[26], rnding, bit);
+  u[27] = half_btf_sse4_1(cospi32, &u[20], cospi32, &u[27], rnding, bit);
+  u[20] = temp1;
+  u[21] = temp2;
+  u[22] = temp3;
+  u[23] = temp4;
+  for (i = 32; i < 40; i++) {
+    addsub_sse4_1(u[i], u[i ^ 15], &u[i], &u[i ^ 15], clamp_lo, clamp_hi);
+  }
 
-  for (i = 0; i < 32; ++i) {
-    for (j = 0; j < 8; ++j) {
-      in[16 * i + j] =
-          _mm_loadu_si128((const __m128i *)(coeff + 32 * i + 4 * j));
-      in[16 * i + j + 8] = zero;
-    }
+  for (i = 48; i < 56; i++) {
+    addsub_sse4_1(u[i ^ 15], u[i], &u[i ^ 15], &u[i], clamp_lo, clamp_hi);
+  }
+}
+
+static INLINE void idct64_stage10_sse4_1(__m128i *u, const __m128i *cospim32,
+                                         const __m128i *cospi32,
+                                         const __m128i *clamp_lo,
+                                         const __m128i *clamp_hi,
+                                         const __m128i *rnding, int bit) {
+  __m128i temp1, temp2, temp3, temp4;
+  for (int i = 0; i < 16; i++) {
+    addsub_sse4_1(u[i], u[31 - i], &u[i], &u[31 - i], clamp_lo, clamp_hi);
   }
 
-  for (i = 0; i < 512; ++i) in[512 + i] = zero;
+  temp1 = half_btf_sse4_1(cospim32, &u[40], cospi32, &u[55], rnding, bit);
+  temp2 = half_btf_sse4_1(cospim32, &u[41], cospi32, &u[54], rnding, bit);
+  temp3 = half_btf_sse4_1(cospim32, &u[42], cospi32, &u[53], rnding, bit);
+  temp4 = half_btf_sse4_1(cospim32, &u[43], cospi32, &u[52], rnding, bit);
+  u[52] = half_btf_sse4_1(cospi32, &u[43], cospi32, &u[52], rnding, bit);
+  u[53] = half_btf_sse4_1(cospi32, &u[42], cospi32, &u[53], rnding, bit);
+  u[54] = half_btf_sse4_1(cospi32, &u[41], cospi32, &u[54], rnding, bit);
+  u[55] = half_btf_sse4_1(cospi32, &u[40], cospi32, &u[55], rnding, bit);
+  u[40] = temp1;
+  u[41] = temp2;
+  u[42] = temp3;
+  u[43] = temp4;
+
+  temp1 = half_btf_sse4_1(cospim32, &u[44], cospi32, &u[51], rnding, bit);
+  temp2 = half_btf_sse4_1(cospim32, &u[45], cospi32, &u[50], rnding, bit);
+  temp3 = half_btf_sse4_1(cospim32, &u[46], cospi32, &u[49], rnding, bit);
+  temp4 = half_btf_sse4_1(cospim32, &u[47], cospi32, &u[48], rnding, bit);
+  u[48] = half_btf_sse4_1(cospi32, &u[47], cospi32, &u[48], rnding, bit);
+  u[49] = half_btf_sse4_1(cospi32, &u[46], cospi32, &u[49], rnding, bit);
+  u[50] = half_btf_sse4_1(cospi32, &u[45], cospi32, &u[50], rnding, bit);
+  u[51] = half_btf_sse4_1(cospi32, &u[44], cospi32, &u[51], rnding, bit);
+  u[44] = temp1;
+  u[45] = temp2;
+  u[46] = temp3;
+  u[47] = temp4;
 }
 
-static void transpose_64x64(__m128i *in, __m128i *out, int do_cols) {
-  int i, j;
-  for (i = 0; i < (do_cols ? 16 : 8); ++i) {
-    for (j = 0; j < 8; ++j) {
-      TRANSPOSE_4X4(in[(4 * i + 0) * 16 + j], in[(4 * i + 1) * 16 + j],
-                    in[(4 * i + 2) * 16 + j], in[(4 * i + 3) * 16 + j],
-                    out[(4 * j + 0) * 16 + i], out[(4 * j + 1) * 16 + i],
-                    out[(4 * j + 2) * 16 + i], out[(4 * j + 3) * 16 + i]);
+static INLINE void idct64_stage11_sse4_1(__m128i *u, __m128i *out, int do_cols,
+                                         int bd, int out_shift,
+                                         const int log_range) {
+  if (do_cols) {
+    for (int i = 0; i < 32; i++) {
+      addsub_no_clamp_sse4_1(u[i], u[63 - i], &out[(i)], &out[(63 - i)]);
+    }
+  } else {
+    const int log_range_out = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+        -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+    const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+        (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+
+    for (int i = 0; i < 32; i++) {
+      addsub_shift_sse4_1(u[i], u[63 - i], &out[(i)], &out[(63 - i)],
+                          &clamp_lo_out, &clamp_hi_out, out_shift);
     }
   }
 }
 
-static void assign_16x16_input_from_32x32(const __m128i *in, __m128i *in16x16,
-                                          int col) {
-  int i;
-  for (i = 0; i < 16 * 16 / 4; i += 4) {
-    in16x16[i] = in[col];
-    in16x16[i + 1] = in[col + 1];
-    in16x16[i + 2] = in[col + 2];
-    in16x16[i + 3] = in[col + 3];
-    col += 8;
+static void idct64x64_low1_sse4_1(__m128i *in, __m128i *out, int bit,
+                                  int do_cols, int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+
+  {
+    __m128i x;
+
+    // stage 1
+    // stage 2
+    // stage 3
+    // stage 4
+    // stage 5
+    // stage 6
+    x = half_btf_0_sse4_1(&cospi32, &in[0], &rnding, bit);
+
+    // stage 8
+    // stage 9
+    // stage 10
+    // stage 11
+    if (do_cols) {
+      x = _mm_max_epi32(x, clamp_lo);
+      x = _mm_min_epi32(x, clamp_hi);
+    } else {
+      const int log_range_out = AOMMAX(16, bd + 6);
+      const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+          -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+      const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+          (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+
+      __m128i offset = _mm_set1_epi32((1 << out_shift) >> 1);
+      x = _mm_add_epi32(x, offset);
+      x = _mm_sra_epi32(x, _mm_cvtsi32_si128(out_shift));
+
+      x = _mm_max_epi32(x, clamp_lo_out);
+      x = _mm_min_epi32(x, clamp_hi_out);
+    }
+
+    out[0] = x;
+    out[63] = x;
+    out[1] = x;
+    out[62] = x;
+    out[2] = x;
+    out[61] = x;
+    out[3] = x;
+    out[60] = x;
+    out[4] = x;
+    out[59] = x;
+    out[5] = x;
+    out[58] = x;
+    out[6] = x;
+    out[57] = x;
+    out[7] = x;
+    out[56] = x;
+    out[8] = x;
+    out[55] = x;
+    out[9] = x;
+    out[54] = x;
+    out[10] = x;
+    out[53] = x;
+    out[11] = x;
+    out[52] = x;
+    out[12] = x;
+    out[51] = x;
+    out[13] = x;
+    out[50] = x;
+    out[14] = x;
+    out[49] = x;
+    out[15] = x;
+    out[48] = x;
+    out[16] = x;
+    out[47] = x;
+    out[17] = x;
+    out[46] = x;
+    out[18] = x;
+    out[45] = x;
+    out[19] = x;
+    out[44] = x;
+    out[20] = x;
+    out[43] = x;
+    out[21] = x;
+    out[42] = x;
+    out[22] = x;
+    out[41] = x;
+    out[23] = x;
+    out[40] = x;
+    out[24] = x;
+    out[39] = x;
+    out[25] = x;
+    out[38] = x;
+    out[26] = x;
+    out[37] = x;
+    out[27] = x;
+    out[36] = x;
+    out[28] = x;
+    out[35] = x;
+    out[29] = x;
+    out[34] = x;
+    out[30] = x;
+    out[33] = x;
+    out[31] = x;
+    out[32] = x;
   }
 }
 
-static void write_buffer_32x32(__m128i *in, uint16_t *output, int stride,
-                               int fliplr, int flipud, int shift, int bd) {
-  __m128i in16x16[16 * 16 / 4];
-  uint16_t *leftUp = &output[0];
-  uint16_t *rightUp = &output[16];
-  uint16_t *leftDown = &output[16 * stride];
-  uint16_t *rightDown = &output[16 * stride + 16];
+static void idct64x64_low8_sse4_1(__m128i *in, __m128i *out, int bit,
+                                  int do_cols, int bd, int out_shift) {
+  int i, j;
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
 
-  if (fliplr) {
-    swap_addr(&leftUp, &rightUp);
-    swap_addr(&leftDown, &rightDown);
-  }
+  const __m128i cospi1 = _mm_set1_epi32(cospi[1]);
+  const __m128i cospi2 = _mm_set1_epi32(cospi[2]);
+  const __m128i cospi3 = _mm_set1_epi32(cospi[3]);
+  const __m128i cospi4 = _mm_set1_epi32(cospi[4]);
+  const __m128i cospi6 = _mm_set1_epi32(cospi[6]);
+  const __m128i cospi8 = _mm_set1_epi32(cospi[8]);
+  const __m128i cospi12 = _mm_set1_epi32(cospi[12]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i cospi20 = _mm_set1_epi32(cospi[20]);
+  const __m128i cospi24 = _mm_set1_epi32(cospi[24]);
+  const __m128i cospi28 = _mm_set1_epi32(cospi[28]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i cospi40 = _mm_set1_epi32(cospi[40]);
+  const __m128i cospi44 = _mm_set1_epi32(cospi[44]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospi56 = _mm_set1_epi32(cospi[56]);
+  const __m128i cospi60 = _mm_set1_epi32(cospi[60]);
+  const __m128i cospim4 = _mm_set1_epi32(-cospi[4]);
+  const __m128i cospim8 = _mm_set1_epi32(-cospi[8]);
+  const __m128i cospim12 = _mm_set1_epi32(-cospi[12]);
+  const __m128i cospim16 = _mm_set1_epi32(-cospi[16]);
+  const __m128i cospim20 = _mm_set1_epi32(-cospi[20]);
+  const __m128i cospim24 = _mm_set1_epi32(-cospi[24]);
+  const __m128i cospim28 = _mm_set1_epi32(-cospi[28]);
+  const __m128i cospim32 = _mm_set1_epi32(-cospi[32]);
+  const __m128i cospim36 = _mm_set1_epi32(-cospi[36]);
+  const __m128i cospim40 = _mm_set1_epi32(-cospi[40]);
+  const __m128i cospim48 = _mm_set1_epi32(-cospi[48]);
+  const __m128i cospim52 = _mm_set1_epi32(-cospi[52]);
+  const __m128i cospim56 = _mm_set1_epi32(-cospi[56]);
+  const __m128i cospi63 = _mm_set1_epi32(cospi[63]);
+  const __m128i cospim57 = _mm_set1_epi32(-cospi[57]);
+  const __m128i cospi7 = _mm_set1_epi32(cospi[7]);
+  const __m128i cospi5 = _mm_set1_epi32(cospi[5]);
+  const __m128i cospi59 = _mm_set1_epi32(cospi[59]);
+  const __m128i cospim61 = _mm_set1_epi32(-cospi[61]);
+  const __m128i cospim58 = _mm_set1_epi32(-cospi[58]);
+  const __m128i cospi62 = _mm_set1_epi32(cospi[62]);
 
-  if (flipud) {
-    swap_addr(&leftUp, &leftDown);
-    swap_addr(&rightUp, &rightDown);
-  }
+  {
+    __m128i u[64];
+
+    // stage 1
+    u[0] = in[0];
+    u[8] = in[4];
+    u[16] = in[2];
+    u[24] = in[6];
+    u[32] = in[1];
+    u[40] = in[5];
+    u[48] = in[3];
+    u[56] = in[7];
+
+    // stage 2
+    u[63] = half_btf_0_sse4_1(&cospi1, &u[32], &rnding, bit);
+    u[32] = half_btf_0_sse4_1(&cospi63, &u[32], &rnding, bit);
+    u[39] = half_btf_0_sse4_1(&cospim57, &u[56], &rnding, bit);
+    u[56] = half_btf_0_sse4_1(&cospi7, &u[56], &rnding, bit);
+    u[55] = half_btf_0_sse4_1(&cospi5, &u[40], &rnding, bit);
+    u[40] = half_btf_0_sse4_1(&cospi59, &u[40], &rnding, bit);
+    u[47] = half_btf_0_sse4_1(&cospim61, &u[48], &rnding, bit);
+    u[48] = half_btf_0_sse4_1(&cospi3, &u[48], &rnding, bit);
 
-  // Left-up quarter
-  assign_16x16_input_from_32x32(in, in16x16, 0);
-  write_buffer_16x16(in16x16, leftUp, stride, fliplr, flipud, shift, bd);
+    // stage 3
+    u[31] = half_btf_0_sse4_1(&cospi2, &u[16], &rnding, bit);
+    u[16] = half_btf_0_sse4_1(&cospi62, &u[16], &rnding, bit);
+    u[23] = half_btf_0_sse4_1(&cospim58, &u[24], &rnding, bit);
+    u[24] = half_btf_0_sse4_1(&cospi6, &u[24], &rnding, bit);
+    u[33] = u[32];
+    u[38] = u[39];
+    u[41] = u[40];
+    u[46] = u[47];
+    u[49] = u[48];
+    u[54] = u[55];
+    u[57] = u[56];
+    u[62] = u[63];
 
-  // Right-up quarter
-  assign_16x16_input_from_32x32(in, in16x16, 32 / 2 / 4);
-  write_buffer_16x16(in16x16, rightUp, stride, fliplr, flipud, shift, bd);
+    // stage 4
+    __m128i temp1, temp2;
+    u[15] = half_btf_0_sse4_1(&cospi4, &u[8], &rnding, bit);
+    u[8] = half_btf_0_sse4_1(&cospi60, &u[8], &rnding, bit);
+    u[17] = u[16];
+    u[22] = u[23];
+    u[25] = u[24];
+    u[30] = u[31];
+
+    temp1 = half_btf_sse4_1(&cospim4, &u[33], &cospi60, &u[62], &rnding, bit);
+    u[62] = half_btf_sse4_1(&cospi60, &u[33], &cospi4, &u[62], &rnding, bit);
+    u[33] = temp1;
+
+    temp2 = half_btf_sse4_1(&cospim36, &u[38], &cospi28, &u[57], &rnding, bit);
+    u[38] = half_btf_sse4_1(&cospim28, &u[38], &cospim36, &u[57], &rnding, bit);
+    u[57] = temp2;
+
+    temp1 = half_btf_sse4_1(&cospim20, &u[41], &cospi44, &u[54], &rnding, bit);
+    u[54] = half_btf_sse4_1(&cospi44, &u[41], &cospi20, &u[54], &rnding, bit);
+    u[41] = temp1;
+
+    temp2 = half_btf_sse4_1(&cospim12, &u[46], &cospim52, &u[49], &rnding, bit);
+    u[49] = half_btf_sse4_1(&cospim52, &u[46], &cospi12, &u[49], &rnding, bit);
+    u[46] = temp2;
 
-  // Left-down quarter
-  assign_16x16_input_from_32x32(in, in16x16, 32 * 32 / 2 / 4);
-  write_buffer_16x16(in16x16, leftDown, stride, fliplr, flipud, shift, bd);
+    // stage 5
+    u[9] = u[8];
+    u[14] = u[15];
+
+    temp1 = half_btf_sse4_1(&cospim8, &u[17], &cospi56, &u[30], &rnding, bit);
+    u[30] = half_btf_sse4_1(&cospi56, &u[17], &cospi8, &u[30], &rnding, bit);
+    u[17] = temp1;
+
+    temp2 = half_btf_sse4_1(&cospim24, &u[22], &cospim40, &u[25], &rnding, bit);
+    u[25] = half_btf_sse4_1(&cospim40, &u[22], &cospi24, &u[25], &rnding, bit);
+    u[22] = temp2;
+
+    u[35] = u[32];
+    u[34] = u[33];
+    u[36] = u[39];
+    u[37] = u[38];
+    u[43] = u[40];
+    u[42] = u[41];
+    u[44] = u[47];
+    u[45] = u[46];
+    u[51] = u[48];
+    u[50] = u[49];
+    u[52] = u[55];
+    u[53] = u[54];
+    u[59] = u[56];
+    u[58] = u[57];
+    u[60] = u[63];
+    u[61] = u[62];
 
-  // Right-down quarter
-  assign_16x16_input_from_32x32(in, in16x16, 32 * 32 / 2 / 4 + 32 / 2 / 4);
-  write_buffer_16x16(in16x16, rightDown, stride, fliplr, flipud, shift, bd);
-}
+    // stage 6
+    temp1 = half_btf_0_sse4_1(&cospi32, &u[0], &rnding, bit);
+    u[1] = half_btf_0_sse4_1(&cospi32, &u[0], &rnding, bit);
+    u[0] = temp1;
+
+    temp2 = half_btf_sse4_1(&cospim16, &u[9], &cospi48, &u[14], &rnding, bit);
+    u[14] = half_btf_sse4_1(&cospi48, &u[9], &cospi16, &u[14], &rnding, bit);
+    u[9] = temp2;
+    u[19] = u[16];
+    u[18] = u[17];
+    u[20] = u[23];
+    u[21] = u[22];
+    u[27] = u[24];
+    u[26] = u[25];
+    u[28] = u[31];
+    u[29] = u[30];
+
+    temp1 = half_btf_sse4_1(&cospim8, &u[34], &cospi56, &u[61], &rnding, bit);
+    u[61] = half_btf_sse4_1(&cospi56, &u[34], &cospi8, &u[61], &rnding, bit);
+    u[34] = temp1;
+    temp2 = half_btf_sse4_1(&cospim8, &u[35], &cospi56, &u[60], &rnding, bit);
+    u[60] = half_btf_sse4_1(&cospi56, &u[35], &cospi8, &u[60], &rnding, bit);
+    u[35] = temp2;
+    temp1 = half_btf_sse4_1(&cospim56, &u[36], &cospim8, &u[59], &rnding, bit);
+    u[59] = half_btf_sse4_1(&cospim8, &u[36], &cospi56, &u[59], &rnding, bit);
+    u[36] = temp1;
+    temp2 = half_btf_sse4_1(&cospim56, &u[37], &cospim8, &u[58], &rnding, bit);
+    u[58] = half_btf_sse4_1(&cospim8, &u[37], &cospi56, &u[58], &rnding, bit);
+    u[37] = temp2;
+    temp1 = half_btf_sse4_1(&cospim40, &u[42], &cospi24, &u[53], &rnding, bit);
+    u[53] = half_btf_sse4_1(&cospi24, &u[42], &cospi40, &u[53], &rnding, bit);
+    u[42] = temp1;
+    temp2 = half_btf_sse4_1(&cospim40, &u[43], &cospi24, &u[52], &rnding, bit);
+    u[52] = half_btf_sse4_1(&cospi24, &u[43], &cospi40, &u[52], &rnding, bit);
+    u[43] = temp2;
+    temp1 = half_btf_sse4_1(&cospim24, &u[44], &cospim40, &u[51], &rnding, bit);
+    u[51] = half_btf_sse4_1(&cospim40, &u[44], &cospi24, &u[51], &rnding, bit);
+    u[44] = temp1;
+    temp2 = half_btf_sse4_1(&cospim24, &u[45], &cospim40, &u[50], &rnding, bit);
+    u[50] = half_btf_sse4_1(&cospim40, &u[45], &cospi24, &u[50], &rnding, bit);
+    u[45] = temp2;
 
-static void assign_32x32_input_from_64x64(const __m128i *in, __m128i *in32x32,
-                                          int col) {
-  int i;
-  for (i = 0; i < 32 * 32 / 4; i += 8) {
-    in32x32[i] = in[col];
-    in32x32[i + 1] = in[col + 1];
-    in32x32[i + 2] = in[col + 2];
-    in32x32[i + 3] = in[col + 3];
-    in32x32[i + 4] = in[col + 4];
-    in32x32[i + 5] = in[col + 5];
-    in32x32[i + 6] = in[col + 6];
-    in32x32[i + 7] = in[col + 7];
-    col += 16;
+    // stage 7
+    u[3] = u[0];
+    u[2] = u[1];
+    u[11] = u[8];
+    u[10] = u[9];
+    u[12] = u[15];
+    u[13] = u[14];
+
+    temp1 = half_btf_sse4_1(&cospim16, &u[18], &cospi48, &u[29], &rnding, bit);
+    u[29] = half_btf_sse4_1(&cospi48, &u[18], &cospi16, &u[29], &rnding, bit);
+    u[18] = temp1;
+    temp2 = half_btf_sse4_1(&cospim16, &u[19], &cospi48, &u[28], &rnding, bit);
+    u[28] = half_btf_sse4_1(&cospi48, &u[19], &cospi16, &u[28], &rnding, bit);
+    u[19] = temp2;
+    temp1 = half_btf_sse4_1(&cospim48, &u[20], &cospim16, &u[27], &rnding, bit);
+    u[27] = half_btf_sse4_1(&cospim16, &u[20], &cospi48, &u[27], &rnding, bit);
+    u[20] = temp1;
+    temp2 = half_btf_sse4_1(&cospim48, &u[21], &cospim16, &u[26], &rnding, bit);
+    u[26] = half_btf_sse4_1(&cospim16, &u[21], &cospi48, &u[26], &rnding, bit);
+    u[21] = temp2;
+    for (i = 32; i < 64; i += 16) {
+      for (j = i; j < i + 4; j++) {
+        addsub_sse4_1(u[j], u[j ^ 7], &u[j], &u[j ^ 7], &clamp_lo, &clamp_hi);
+        addsub_sse4_1(u[j ^ 15], u[j ^ 8], &u[j ^ 15], &u[j ^ 8], &clamp_lo,
+                      &clamp_hi);
+      }
+    }
+
+    // stage 8
+    u[7] = u[0];
+    u[6] = u[1];
+    u[5] = u[2];
+    u[4] = u[3];
+    u[9] = u[9];
+
+    idct64_stage8_sse4_1(u, &cospim32, &cospi32, &cospim16, &cospi48, &cospi16,
+                         &cospim48, &clamp_lo, &clamp_hi, &rnding, bit);
+
+    // stage 9
+    idct64_stage9_sse4_1(u, &cospim32, &cospi32, &clamp_lo, &clamp_hi, &rnding,
+                         bit);
+
+    // stage 10
+    idct64_stage10_sse4_1(u, &cospim32, &cospi32, &clamp_lo, &clamp_hi, &rnding,
+                          bit);
+
+    // stage 11
+    idct64_stage11_sse4_1(u, out, do_cols, bd, out_shift, log_range);
   }
 }
 
-static void write_buffer_64x64(__m128i *in, uint16_t *output, int stride,
-                               int fliplr, int flipud, int shift, int bd) {
-  __m128i in32x32[32 * 32 / 4];
-  uint16_t *leftUp = &output[0];
-  uint16_t *rightUp = &output[32];
-  uint16_t *leftDown = &output[32 * stride];
-  uint16_t *rightDown = &output[32 * stride + 32];
+static void idct64x64_low16_sse4_1(__m128i *in, __m128i *out, int bit,
+                                   int do_cols, int bd, int out_shift) {
+  int i, j;
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i rnding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
 
-  if (fliplr) {
-    swap_addr(&leftUp, &rightUp);
-    swap_addr(&leftDown, &rightDown);
-  }
+  const __m128i cospi1 = _mm_set1_epi32(cospi[1]);
+  const __m128i cospi2 = _mm_set1_epi32(cospi[2]);
+  const __m128i cospi3 = _mm_set1_epi32(cospi[3]);
+  const __m128i cospi4 = _mm_set1_epi32(cospi[4]);
+  const __m128i cospi5 = _mm_set1_epi32(cospi[5]);
+  const __m128i cospi6 = _mm_set1_epi32(cospi[6]);
+  const __m128i cospi7 = _mm_set1_epi32(cospi[7]);
+  const __m128i cospi8 = _mm_set1_epi32(cospi[8]);
+  const __m128i cospi9 = _mm_set1_epi32(cospi[9]);
+  const __m128i cospi10 = _mm_set1_epi32(cospi[10]);
+  const __m128i cospi11 = _mm_set1_epi32(cospi[11]);
+  const __m128i cospi12 = _mm_set1_epi32(cospi[12]);
+  const __m128i cospi13 = _mm_set1_epi32(cospi[13]);
+  const __m128i cospi14 = _mm_set1_epi32(cospi[14]);
+  const __m128i cospi15 = _mm_set1_epi32(cospi[15]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i cospi20 = _mm_set1_epi32(cospi[20]);
+  const __m128i cospi24 = _mm_set1_epi32(cospi[24]);
+  const __m128i cospi28 = _mm_set1_epi32(cospi[28]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i cospi36 = _mm_set1_epi32(cospi[36]);
+  const __m128i cospi40 = _mm_set1_epi32(cospi[40]);
+  const __m128i cospi44 = _mm_set1_epi32(cospi[44]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospi51 = _mm_set1_epi32(cospi[51]);
+  const __m128i cospi52 = _mm_set1_epi32(cospi[52]);
+  const __m128i cospi54 = _mm_set1_epi32(cospi[54]);
+  const __m128i cospi55 = _mm_set1_epi32(cospi[55]);
+  const __m128i cospi56 = _mm_set1_epi32(cospi[56]);
+  const __m128i cospi59 = _mm_set1_epi32(cospi[59]);
+  const __m128i cospi60 = _mm_set1_epi32(cospi[60]);
+  const __m128i cospi62 = _mm_set1_epi32(cospi[62]);
+  const __m128i cospi63 = _mm_set1_epi32(cospi[63]);
 
-  if (flipud) {
-    swap_addr(&leftUp, &leftDown);
-    swap_addr(&rightUp, &rightDown);
-  }
+  const __m128i cospim4 = _mm_set1_epi32(-cospi[4]);
+  const __m128i cospim8 = _mm_set1_epi32(-cospi[8]);
+  const __m128i cospim12 = _mm_set1_epi32(-cospi[12]);
+  const __m128i cospim16 = _mm_set1_epi32(-cospi[16]);
+  const __m128i cospim20 = _mm_set1_epi32(-cospi[20]);
+  const __m128i cospim24 = _mm_set1_epi32(-cospi[24]);
+  const __m128i cospim28 = _mm_set1_epi32(-cospi[28]);
+  const __m128i cospim32 = _mm_set1_epi32(-cospi[32]);
+  const __m128i cospim36 = _mm_set1_epi32(-cospi[36]);
+  const __m128i cospim40 = _mm_set1_epi32(-cospi[40]);
+  const __m128i cospim44 = _mm_set1_epi32(-cospi[44]);
+  const __m128i cospim48 = _mm_set1_epi32(-cospi[48]);
+  const __m128i cospim49 = _mm_set1_epi32(-cospi[49]);
+  const __m128i cospim50 = _mm_set1_epi32(-cospi[50]);
+  const __m128i cospim52 = _mm_set1_epi32(-cospi[52]);
+  const __m128i cospim53 = _mm_set1_epi32(-cospi[53]);
+  const __m128i cospim56 = _mm_set1_epi32(-cospi[56]);
+  const __m128i cospim57 = _mm_set1_epi32(-cospi[57]);
+  const __m128i cospim58 = _mm_set1_epi32(-cospi[58]);
+  const __m128i cospim60 = _mm_set1_epi32(-cospi[60]);
+  const __m128i cospim61 = _mm_set1_epi32(-cospi[61]);
+
+  {
+    __m128i u[64];
+    __m128i tmp1, tmp2, tmp3, tmp4;
+    // stage 1
+    u[0] = in[0];
+    u[32] = in[1];
+    u[36] = in[9];
+    u[40] = in[5];
+    u[44] = in[13];
+    u[48] = in[3];
+    u[52] = in[11];
+    u[56] = in[7];
+    u[60] = in[15];
+    u[16] = in[2];
+    u[20] = in[10];
+    u[24] = in[6];
+    u[28] = in[14];
+    u[4] = in[8];
+    u[8] = in[4];
+    u[12] = in[12];
+
+    // stage 2
+    u[63] = half_btf_0_sse4_1(&cospi1, &u[32], &rnding, bit);
+    u[32] = half_btf_0_sse4_1(&cospi63, &u[32], &rnding, bit);
+    u[35] = half_btf_0_sse4_1(&cospim49, &u[60], &rnding, bit);
+    u[60] = half_btf_0_sse4_1(&cospi15, &u[60], &rnding, bit);
+    u[59] = half_btf_0_sse4_1(&cospi9, &u[36], &rnding, bit);
+    u[36] = half_btf_0_sse4_1(&cospi55, &u[36], &rnding, bit);
+    u[39] = half_btf_0_sse4_1(&cospim57, &u[56], &rnding, bit);
+    u[56] = half_btf_0_sse4_1(&cospi7, &u[56], &rnding, bit);
+    u[55] = half_btf_0_sse4_1(&cospi5, &u[40], &rnding, bit);
+    u[40] = half_btf_0_sse4_1(&cospi59, &u[40], &rnding, bit);
+    u[43] = half_btf_0_sse4_1(&cospim53, &u[52], &rnding, bit);
+    u[52] = half_btf_0_sse4_1(&cospi11, &u[52], &rnding, bit);
+    u[47] = half_btf_0_sse4_1(&cospim61, &u[48], &rnding, bit);
+    u[48] = half_btf_0_sse4_1(&cospi3, &u[48], &rnding, bit);
+    u[51] = half_btf_0_sse4_1(&cospi13, &u[44], &rnding, bit);
+    u[44] = half_btf_0_sse4_1(&cospi51, &u[44], &rnding, bit);
 
-  // Left-up quarter
-  assign_32x32_input_from_64x64(in, in32x32, 0);
-  write_buffer_32x32(in32x32, leftUp, stride, fliplr, flipud, shift, bd);
+    // stage 3
+    u[31] = half_btf_0_sse4_1(&cospi2, &u[16], &rnding, bit);
+    u[16] = half_btf_0_sse4_1(&cospi62, &u[16], &rnding, bit);
+    u[19] = half_btf_0_sse4_1(&cospim50, &u[28], &rnding, bit);
+    u[28] = half_btf_0_sse4_1(&cospi14, &u[28], &rnding, bit);
+    u[27] = half_btf_0_sse4_1(&cospi10, &u[20], &rnding, bit);
+    u[20] = half_btf_0_sse4_1(&cospi54, &u[20], &rnding, bit);
+    u[23] = half_btf_0_sse4_1(&cospim58, &u[24], &rnding, bit);
+    u[24] = half_btf_0_sse4_1(&cospi6, &u[24], &rnding, bit);
+    u[33] = u[32];
+    u[34] = u[35];
+    u[37] = u[36];
+    u[38] = u[39];
+    u[41] = u[40];
+    u[42] = u[43];
+    u[45] = u[44];
+    u[46] = u[47];
+    u[49] = u[48];
+    u[50] = u[51];
+    u[53] = u[52];
+    u[54] = u[55];
+    u[57] = u[56];
+    u[58] = u[59];
+    u[61] = u[60];
+    u[62] = u[63];
 
-  // Right-up quarter
-  assign_32x32_input_from_64x64(in, in32x32, 64 / 2 / 4);
-  write_buffer_32x32(in32x32, rightUp, stride, fliplr, flipud, shift, bd);
+    // stage 4
+    u[15] = half_btf_0_sse4_1(&cospi4, &u[8], &rnding, bit);
+    u[8] = half_btf_0_sse4_1(&cospi60, &u[8], &rnding, bit);
+    u[11] = half_btf_0_sse4_1(&cospim52, &u[12], &rnding, bit);
+    u[12] = half_btf_0_sse4_1(&cospi12, &u[12], &rnding, bit);
+
+    u[17] = u[16];
+    u[18] = u[19];
+    u[21] = u[20];
+    u[22] = u[23];
+    u[25] = u[24];
+    u[26] = u[27];
+    u[29] = u[28];
+    u[30] = u[31];
+
+    tmp1 = half_btf_sse4_1(&cospim4, &u[33], &cospi60, &u[62], &rnding, bit);
+    tmp2 = half_btf_sse4_1(&cospim60, &u[34], &cospim4, &u[61], &rnding, bit);
+    tmp3 = half_btf_sse4_1(&cospim36, &u[37], &cospi28, &u[58], &rnding, bit);
+    tmp4 = half_btf_sse4_1(&cospim28, &u[38], &cospim36, &u[57], &rnding, bit);
+    u[57] = half_btf_sse4_1(&cospim36, &u[38], &cospi28, &u[57], &rnding, bit);
+    u[58] = half_btf_sse4_1(&cospi28, &u[37], &cospi36, &u[58], &rnding, bit);
+    u[61] = half_btf_sse4_1(&cospim4, &u[34], &cospi60, &u[61], &rnding, bit);
+    u[62] = half_btf_sse4_1(&cospi60, &u[33], &cospi4, &u[62], &rnding, bit);
+    u[33] = tmp1;
+    u[34] = tmp2;
+    u[37] = tmp3;
+    u[38] = tmp4;
+
+    tmp1 = half_btf_sse4_1(&cospim20, &u[41], &cospi44, &u[54], &rnding, bit);
+    tmp2 = half_btf_sse4_1(&cospim44, &u[42], &cospim20, &u[53], &rnding, bit);
+    tmp3 = half_btf_sse4_1(&cospim52, &u[45], &cospi12, &u[50], &rnding, bit);
+    tmp4 = half_btf_sse4_1(&cospim12, &u[46], &cospim52, &u[49], &rnding, bit);
+    u[49] = half_btf_sse4_1(&cospim52, &u[46], &cospi12, &u[49], &rnding, bit);
+    u[50] = half_btf_sse4_1(&cospi12, &u[45], &cospi52, &u[50], &rnding, bit);
+    u[53] = half_btf_sse4_1(&cospim20, &u[42], &cospi44, &u[53], &rnding, bit);
+    u[54] = half_btf_sse4_1(&cospi44, &u[41], &cospi20, &u[54], &rnding, bit);
+    u[41] = tmp1;
+    u[42] = tmp2;
+    u[45] = tmp3;
+    u[46] = tmp4;
 
-  // Left-down quarter
-  assign_32x32_input_from_64x64(in, in32x32, 64 * 64 / 2 / 4);
-  write_buffer_32x32(in32x32, leftDown, stride, fliplr, flipud, shift, bd);
+    // stage 5
+    u[7] = half_btf_0_sse4_1(&cospi8, &u[4], &rnding, bit);
+    u[4] = half_btf_0_sse4_1(&cospi56, &u[4], &rnding, bit);
+
+    u[9] = u[8];
+    u[10] = u[11];
+    u[13] = u[12];
+    u[14] = u[15];
+
+    tmp1 = half_btf_sse4_1(&cospim8, &u[17], &cospi56, &u[30], &rnding, bit);
+    tmp2 = half_btf_sse4_1(&cospim56, &u[18], &cospim8, &u[29], &rnding, bit);
+    tmp3 = half_btf_sse4_1(&cospim40, &u[21], &cospi24, &u[26], &rnding, bit);
+    tmp4 = half_btf_sse4_1(&cospim24, &u[22], &cospim40, &u[25], &rnding, bit);
+    u[25] = half_btf_sse4_1(&cospim40, &u[22], &cospi24, &u[25], &rnding, bit);
+    u[26] = half_btf_sse4_1(&cospi24, &u[21], &cospi40, &u[26], &rnding, bit);
+    u[29] = half_btf_sse4_1(&cospim8, &u[18], &cospi56, &u[29], &rnding, bit);
+    u[30] = half_btf_sse4_1(&cospi56, &u[17], &cospi8, &u[30], &rnding, bit);
+    u[17] = tmp1;
+    u[18] = tmp2;
+    u[21] = tmp3;
+    u[22] = tmp4;
 
-  // Right-down quarter
-  assign_32x32_input_from_64x64(in, in32x32, 64 * 64 / 2 / 4 + 64 / 2 / 4);
-  write_buffer_32x32(in32x32, rightDown, stride, fliplr, flipud, shift, bd);
+    for (i = 32; i < 64; i += 8) {
+      addsub_sse4_1(u[i + 0], u[i + 3], &u[i + 0], &u[i + 3], &clamp_lo,
+                    &clamp_hi);
+      addsub_sse4_1(u[i + 1], u[i + 2], &u[i + 1], &u[i + 2], &clamp_lo,
+                    &clamp_hi);
+
+      addsub_sse4_1(u[i + 7], u[i + 4], &u[i + 7], &u[i + 4], &clamp_lo,
+                    &clamp_hi);
+      addsub_sse4_1(u[i + 6], u[i + 5], &u[i + 6], &u[i + 5], &clamp_lo,
+                    &clamp_hi);
+    }
+
+    // stage 6
+    tmp1 = half_btf_0_sse4_1(&cospi32, &u[0], &rnding, bit);
+    u[1] = half_btf_0_sse4_1(&cospi32, &u[0], &rnding, bit);
+    u[0] = tmp1;
+    u[5] = u[4];
+    u[6] = u[7];
+
+    tmp1 = half_btf_sse4_1(&cospim16, &u[9], &cospi48, &u[14], &rnding, bit);
+    u[14] = half_btf_sse4_1(&cospi48, &u[9], &cospi16, &u[14], &rnding, bit);
+    u[9] = tmp1;
+    tmp2 = half_btf_sse4_1(&cospim48, &u[10], &cospim16, &u[13], &rnding, bit);
+    u[13] = half_btf_sse4_1(&cospim16, &u[10], &cospi48, &u[13], &rnding, bit);
+    u[10] = tmp2;
+
+    for (i = 16; i < 32; i += 8) {
+      addsub_sse4_1(u[i + 0], u[i + 3], &u[i + 0], &u[i + 3], &clamp_lo,
+                    &clamp_hi);
+      addsub_sse4_1(u[i + 1], u[i + 2], &u[i + 1], &u[i + 2], &clamp_lo,
+                    &clamp_hi);
+
+      addsub_sse4_1(u[i + 7], u[i + 4], &u[i + 7], &u[i + 4], &clamp_lo,
+                    &clamp_hi);
+      addsub_sse4_1(u[i + 6], u[i + 5], &u[i + 6], &u[i + 5], &clamp_lo,
+                    &clamp_hi);
+    }
+
+    tmp1 = half_btf_sse4_1(&cospim8, &u[34], &cospi56, &u[61], &rnding, bit);
+    tmp2 = half_btf_sse4_1(&cospim8, &u[35], &cospi56, &u[60], &rnding, bit);
+    tmp3 = half_btf_sse4_1(&cospim56, &u[36], &cospim8, &u[59], &rnding, bit);
+    tmp4 = half_btf_sse4_1(&cospim56, &u[37], &cospim8, &u[58], &rnding, bit);
+    u[58] = half_btf_sse4_1(&cospim8, &u[37], &cospi56, &u[58], &rnding, bit);
+    u[59] = half_btf_sse4_1(&cospim8, &u[36], &cospi56, &u[59], &rnding, bit);
+    u[60] = half_btf_sse4_1(&cospi56, &u[35], &cospi8, &u[60], &rnding, bit);
+    u[61] = half_btf_sse4_1(&cospi56, &u[34], &cospi8, &u[61], &rnding, bit);
+    u[34] = tmp1;
+    u[35] = tmp2;
+    u[36] = tmp3;
+    u[37] = tmp4;
+
+    tmp1 = half_btf_sse4_1(&cospim40, &u[42], &cospi24, &u[53], &rnding, bit);
+    tmp2 = half_btf_sse4_1(&cospim40, &u[43], &cospi24, &u[52], &rnding, bit);
+    tmp3 = half_btf_sse4_1(&cospim24, &u[44], &cospim40, &u[51], &rnding, bit);
+    tmp4 = half_btf_sse4_1(&cospim24, &u[45], &cospim40, &u[50], &rnding, bit);
+    u[50] = half_btf_sse4_1(&cospim40, &u[45], &cospi24, &u[50], &rnding, bit);
+    u[51] = half_btf_sse4_1(&cospim40, &u[44], &cospi24, &u[51], &rnding, bit);
+    u[52] = half_btf_sse4_1(&cospi24, &u[43], &cospi40, &u[52], &rnding, bit);
+    u[53] = half_btf_sse4_1(&cospi24, &u[42], &cospi40, &u[53], &rnding, bit);
+    u[42] = tmp1;
+    u[43] = tmp2;
+    u[44] = tmp3;
+    u[45] = tmp4;
+
+    // stage 7
+    u[3] = u[0];
+    u[2] = u[1];
+    tmp1 = half_btf_sse4_1(&cospim32, &u[5], &cospi32, &u[6], &rnding, bit);
+    u[6] = half_btf_sse4_1(&cospi32, &u[5], &cospi32, &u[6], &rnding, bit);
+    u[5] = tmp1;
+    addsub_sse4_1(u[8], u[11], &u[8], &u[11], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[9], u[10], &u[9], &u[10], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[15], u[12], &u[15], &u[12], &clamp_lo, &clamp_hi);
+    addsub_sse4_1(u[14], u[13], &u[14], &u[13], &clamp_lo, &clamp_hi);
+
+    tmp1 = half_btf_sse4_1(&cospim16, &u[18], &cospi48, &u[29], &rnding, bit);
+    tmp2 = half_btf_sse4_1(&cospim16, &u[19], &cospi48, &u[28], &rnding, bit);
+    tmp3 = half_btf_sse4_1(&cospim48, &u[20], &cospim16, &u[27], &rnding, bit);
+    tmp4 = half_btf_sse4_1(&cospim48, &u[21], &cospim16, &u[26], &rnding, bit);
+    u[26] = half_btf_sse4_1(&cospim16, &u[21], &cospi48, &u[26], &rnding, bit);
+    u[27] = half_btf_sse4_1(&cospim16, &u[20], &cospi48, &u[27], &rnding, bit);
+    u[28] = half_btf_sse4_1(&cospi48, &u[19], &cospi16, &u[28], &rnding, bit);
+    u[29] = half_btf_sse4_1(&cospi48, &u[18], &cospi16, &u[29], &rnding, bit);
+    u[18] = tmp1;
+    u[19] = tmp2;
+    u[20] = tmp3;
+    u[21] = tmp4;
+
+    for (i = 32; i < 64; i += 16) {
+      for (j = i; j < i + 4; j++) {
+        addsub_sse4_1(u[j], u[j ^ 7], &u[j], &u[j ^ 7], &clamp_lo, &clamp_hi);
+        addsub_sse4_1(u[j ^ 15], u[j ^ 8], &u[j ^ 15], &u[j ^ 8], &clamp_lo,
+                      &clamp_hi);
+      }
+    }
+
+    // stage 8
+    for (i = 0; i < 4; ++i) {
+      addsub_sse4_1(u[i], u[7 - i], &u[i], &u[7 - i], &clamp_lo, &clamp_hi);
+    }
+
+    idct64_stage8_sse4_1(u, &cospim32, &cospi32, &cospim16, &cospi48, &cospi16,
+                         &cospim48, &clamp_lo, &clamp_hi, &rnding, bit);
+
+    // stage 9
+    idct64_stage9_sse4_1(u, &cospim32, &cospi32, &clamp_lo, &clamp_hi, &rnding,
+                         bit);
+
+    // stage 10
+    idct64_stage10_sse4_1(u, &cospim32, &cospi32, &clamp_lo, &clamp_hi, &rnding,
+                          bit);
+
+    // stage 11
+    idct64_stage11_sse4_1(u, out, do_cols, bd, out_shift, log_range);
+  }
 }
 
 static void idct64x64_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
@@ -1847,7 +3770,6 @@ static void idct64x64_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
   const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
   const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
   const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
-  int col;
 
   const __m128i cospi1 = _mm_set1_epi32(cospi[1]);
   const __m128i cospi2 = _mm_set1_epi32(cospi[2]);
@@ -1929,46 +3851,46 @@ static void idct64x64_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
   const __m128i cospim60 = _mm_set1_epi32(-cospi[60]);
   const __m128i cospim61 = _mm_set1_epi32(-cospi[61]);
 
-  for (col = 0; col < (do_cols ? 64 / 4 : 32 / 4); ++col) {
+  {
     __m128i u[64], v[64];
 
     // stage 1
-    u[32] = in[1 * 16 + col];
-    u[34] = in[17 * 16 + col];
-    u[36] = in[9 * 16 + col];
-    u[38] = in[25 * 16 + col];
-    u[40] = in[5 * 16 + col];
-    u[42] = in[21 * 16 + col];
-    u[44] = in[13 * 16 + col];
-    u[46] = in[29 * 16 + col];
-    u[48] = in[3 * 16 + col];
-    u[50] = in[19 * 16 + col];
-    u[52] = in[11 * 16 + col];
-    u[54] = in[27 * 16 + col];
-    u[56] = in[7 * 16 + col];
-    u[58] = in[23 * 16 + col];
-    u[60] = in[15 * 16 + col];
-    u[62] = in[31 * 16 + col];
-
-    v[16] = in[2 * 16 + col];
-    v[18] = in[18 * 16 + col];
-    v[20] = in[10 * 16 + col];
-    v[22] = in[26 * 16 + col];
-    v[24] = in[6 * 16 + col];
-    v[26] = in[22 * 16 + col];
-    v[28] = in[14 * 16 + col];
-    v[30] = in[30 * 16 + col];
-
-    u[8] = in[4 * 16 + col];
-    u[10] = in[20 * 16 + col];
-    u[12] = in[12 * 16 + col];
-    u[14] = in[28 * 16 + col];
-
-    v[4] = in[8 * 16 + col];
-    v[6] = in[24 * 16 + col];
-
-    u[0] = in[0 * 16 + col];
-    u[2] = in[16 * 16 + col];
+    u[32] = in[1];
+    u[34] = in[17];
+    u[36] = in[9];
+    u[38] = in[25];
+    u[40] = in[5];
+    u[42] = in[21];
+    u[44] = in[13];
+    u[46] = in[29];
+    u[48] = in[3];
+    u[50] = in[19];
+    u[52] = in[11];
+    u[54] = in[27];
+    u[56] = in[7];
+    u[58] = in[23];
+    u[60] = in[15];
+    u[62] = in[31];
+
+    v[16] = in[2];
+    v[18] = in[18];
+    v[20] = in[10];
+    v[22] = in[26];
+    v[24] = in[6];
+    v[26] = in[22];
+    v[28] = in[14];
+    v[30] = in[30];
+
+    u[8] = in[4];
+    u[10] = in[20];
+    u[12] = in[12];
+    u[14] = in[28];
+
+    v[4] = in[8];
+    v[6] = in[24];
+
+    u[0] = in[0];
+    u[2] = in[16];
 
     // stage 2
     v[32] = half_btf_0_sse4_1(&cospi63, &u[32], &rnding, bit);
@@ -2301,39 +4223,1126 @@ static void idct64x64_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
     // stage 11
     if (do_cols) {
       for (i = 0; i < 32; i++) {
-        addsub_no_clamp_sse4_1(v[i], v[63 - i], &out[16 * (i) + col],
-                               &out[16 * (63 - i) + col]);
+        addsub_no_clamp_sse4_1(v[i], v[63 - i], &out[(i)], &out[(63 - i)]);
       }
     } else {
+      const int log_range_out = AOMMAX(16, bd + 6);
+      const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+          -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+      const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+          (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+
       for (i = 0; i < 32; i++) {
-        addsub_shift_sse4_1(v[i], v[63 - i], &out[16 * (i) + col],
-                            &out[16 * (63 - i) + col], &clamp_lo, &clamp_hi,
-                            out_shift);
+        addsub_shift_sse4_1(v[i], v[63 - i], &out[(i)], &out[(63 - i)],
+                            &clamp_lo_out, &clamp_hi_out, out_shift);
       }
     }
   }
 }
 
-void av1_inv_txfm2d_add_64x64_sse4_1(const int32_t *coeff, uint16_t *output,
-                                     int stride, TX_TYPE tx_type, int bd) {
-  __m128i in[64 * 64 / 4], out[64 * 64 / 4];
-  const int8_t *shift = inv_txfm_shift_ls[TX_64X64];
-  const int txw_idx = tx_size_wide_log2[TX_64X64] - tx_size_wide_log2[0];
-  const int txh_idx = tx_size_high_log2[TX_64X64] - tx_size_high_log2[0];
+static void idct32x32_low1_sse4_1(__m128i *in, __m128i *out, int bit,
+                                  int do_cols, int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i rounding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+  __m128i bf1;
+
+  // stage 0
+  // stage 1
+  bf1 = in[0];
+
+  // stage 2
+  // stage 3
+  // stage 4
+  // stage 5
+  bf1 = half_btf_0_sse4_1(&cospi32, &bf1, &rounding, bit);
+
+  // stage 6
+  // stage 7
+  // stage 8
+  // stage 9
+  if (do_cols) {
+    bf1 = _mm_max_epi32(bf1, clamp_lo);
+    bf1 = _mm_min_epi32(bf1, clamp_hi);
+  } else {
+    const int log_range_out = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+        -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+    const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+        (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+
+    __m128i offset = _mm_set1_epi32((1 << out_shift) >> 1);
+    bf1 = _mm_add_epi32(bf1, offset);
+    bf1 = _mm_sra_epi32(bf1, _mm_cvtsi32_si128(out_shift));
+    bf1 = _mm_max_epi32(bf1, clamp_lo_out);
+    bf1 = _mm_min_epi32(bf1, clamp_hi_out);
+  }
+  out[0] = bf1;
+  out[1] = bf1;
+  out[2] = bf1;
+  out[3] = bf1;
+  out[4] = bf1;
+  out[5] = bf1;
+  out[6] = bf1;
+  out[7] = bf1;
+  out[8] = bf1;
+  out[9] = bf1;
+  out[10] = bf1;
+  out[11] = bf1;
+  out[12] = bf1;
+  out[13] = bf1;
+  out[14] = bf1;
+  out[15] = bf1;
+  out[16] = bf1;
+  out[17] = bf1;
+  out[18] = bf1;
+  out[19] = bf1;
+  out[20] = bf1;
+  out[21] = bf1;
+  out[22] = bf1;
+  out[23] = bf1;
+  out[24] = bf1;
+  out[25] = bf1;
+  out[26] = bf1;
+  out[27] = bf1;
+  out[28] = bf1;
+  out[29] = bf1;
+  out[30] = bf1;
+  out[31] = bf1;
+}
+
+static void idct32x32_low8_sse4_1(__m128i *in, __m128i *out, int bit,
+                                  int do_cols, int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi62 = _mm_set1_epi32(cospi[62]);
+  const __m128i cospi14 = _mm_set1_epi32(cospi[14]);
+  const __m128i cospi54 = _mm_set1_epi32(cospi[54]);
+  const __m128i cospi6 = _mm_set1_epi32(cospi[6]);
+  const __m128i cospi10 = _mm_set1_epi32(cospi[10]);
+  const __m128i cospi2 = _mm_set1_epi32(cospi[2]);
+  const __m128i cospim58 = _mm_set1_epi32(-cospi[58]);
+  const __m128i cospim50 = _mm_set1_epi32(-cospi[50]);
+  const __m128i cospi60 = _mm_set1_epi32(cospi[60]);
+  const __m128i cospi12 = _mm_set1_epi32(cospi[12]);
+  const __m128i cospi4 = _mm_set1_epi32(cospi[4]);
+  const __m128i cospim52 = _mm_set1_epi32(-cospi[52]);
+  const __m128i cospi56 = _mm_set1_epi32(cospi[56]);
+  const __m128i cospi24 = _mm_set1_epi32(cospi[24]);
+  const __m128i cospi40 = _mm_set1_epi32(cospi[40]);
+  const __m128i cospi8 = _mm_set1_epi32(cospi[8]);
+  const __m128i cospim40 = _mm_set1_epi32(-cospi[40]);
+  const __m128i cospim8 = _mm_set1_epi32(-cospi[8]);
+  const __m128i cospim56 = _mm_set1_epi32(-cospi[56]);
+  const __m128i cospim24 = _mm_set1_epi32(-cospi[24]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i cospim32 = _mm_set1_epi32(-cospi[32]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospim48 = _mm_set1_epi32(-cospi[48]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i cospim16 = _mm_set1_epi32(-cospi[16]);
+  const __m128i rounding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+  __m128i bf1[32];
+
+  // stage 0
+  // stage 1
+  bf1[0] = in[0];
+  bf1[4] = in[4];
+  bf1[8] = in[2];
+  bf1[12] = in[6];
+  bf1[16] = in[1];
+  bf1[20] = in[5];
+  bf1[24] = in[3];
+  bf1[28] = in[7];
+
+  // stage 2
+  bf1[31] = half_btf_0_sse4_1(&cospi2, &bf1[16], &rounding, bit);
+  bf1[16] = half_btf_0_sse4_1(&cospi62, &bf1[16], &rounding, bit);
+  bf1[19] = half_btf_0_sse4_1(&cospim50, &bf1[28], &rounding, bit);
+  bf1[28] = half_btf_0_sse4_1(&cospi14, &bf1[28], &rounding, bit);
+  bf1[27] = half_btf_0_sse4_1(&cospi10, &bf1[20], &rounding, bit);
+  bf1[20] = half_btf_0_sse4_1(&cospi54, &bf1[20], &rounding, bit);
+  bf1[23] = half_btf_0_sse4_1(&cospim58, &bf1[24], &rounding, bit);
+  bf1[24] = half_btf_0_sse4_1(&cospi6, &bf1[24], &rounding, bit);
+
+  // stage 3
+  bf1[15] = half_btf_0_sse4_1(&cospi4, &bf1[8], &rounding, bit);
+  bf1[8] = half_btf_0_sse4_1(&cospi60, &bf1[8], &rounding, bit);
+
+  bf1[11] = half_btf_0_sse4_1(&cospim52, &bf1[12], &rounding, bit);
+  bf1[12] = half_btf_0_sse4_1(&cospi12, &bf1[12], &rounding, bit);
+  bf1[17] = bf1[16];
+  bf1[18] = bf1[19];
+  bf1[21] = bf1[20];
+  bf1[22] = bf1[23];
+  bf1[25] = bf1[24];
+  bf1[26] = bf1[27];
+  bf1[29] = bf1[28];
+  bf1[30] = bf1[31];
+
+  // stage 4 :
+  bf1[7] = half_btf_0_sse4_1(&cospi8, &bf1[4], &rounding, bit);
+  bf1[4] = half_btf_0_sse4_1(&cospi56, &bf1[4], &rounding, bit);
+
+  bf1[9] = bf1[8];
+  bf1[10] = bf1[11];
+  bf1[13] = bf1[12];
+  bf1[14] = bf1[15];
+
+  idct32_stage4_sse4_1(bf1, &cospim8, &cospi56, &cospi8, &cospim56, &cospim40,
+                       &cospi24, &cospi40, &cospim24, &rounding, bit);
+
+  // stage 5
+  bf1[0] = half_btf_0_sse4_1(&cospi32, &bf1[0], &rounding, bit);
+  bf1[1] = bf1[0];
+  bf1[5] = bf1[4];
+  bf1[6] = bf1[7];
+
+  idct32_stage5_sse4_1(bf1, &cospim16, &cospi48, &cospi16, &cospim48, &clamp_lo,
+                       &clamp_hi, &rounding, bit);
+
+  // stage 6
+  bf1[3] = bf1[0];
+  bf1[2] = bf1[1];
+
+  idct32_stage6_sse4_1(bf1, &cospim32, &cospi32, &cospim16, &cospi48, &cospi16,
+                       &cospim48, &clamp_lo, &clamp_hi, &rounding, bit);
+
+  // stage 7
+  idct32_stage7_sse4_1(bf1, &cospim32, &cospi32, &clamp_lo, &clamp_hi,
+                       &rounding, bit);
+
+  // stage 8
+  idct32_stage8_sse4_1(bf1, &cospim32, &cospi32, &clamp_lo, &clamp_hi,
+                       &rounding, bit);
+
+  // stage 9
+  idct32_stage9_sse4_1(bf1, out, do_cols, bd, out_shift, log_range);
+}
+
+static void idct32x32_low16_sse4_1(__m128i *in, __m128i *out, int bit,
+                                   int do_cols, int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi62 = _mm_set1_epi32(cospi[62]);
+  const __m128i cospi30 = _mm_set1_epi32(cospi[30]);
+  const __m128i cospi46 = _mm_set1_epi32(cospi[46]);
+  const __m128i cospi14 = _mm_set1_epi32(cospi[14]);
+  const __m128i cospi54 = _mm_set1_epi32(cospi[54]);
+  const __m128i cospi22 = _mm_set1_epi32(cospi[22]);
+  const __m128i cospi38 = _mm_set1_epi32(cospi[38]);
+  const __m128i cospi6 = _mm_set1_epi32(cospi[6]);
+  const __m128i cospi26 = _mm_set1_epi32(cospi[26]);
+  const __m128i cospi10 = _mm_set1_epi32(cospi[10]);
+  const __m128i cospi18 = _mm_set1_epi32(cospi[18]);
+  const __m128i cospi2 = _mm_set1_epi32(cospi[2]);
+  const __m128i cospim58 = _mm_set1_epi32(-cospi[58]);
+  const __m128i cospim42 = _mm_set1_epi32(-cospi[42]);
+  const __m128i cospim50 = _mm_set1_epi32(-cospi[50]);
+  const __m128i cospim34 = _mm_set1_epi32(-cospi[34]);
+  const __m128i cospi60 = _mm_set1_epi32(cospi[60]);
+  const __m128i cospi28 = _mm_set1_epi32(cospi[28]);
+  const __m128i cospi44 = _mm_set1_epi32(cospi[44]);
+  const __m128i cospi12 = _mm_set1_epi32(cospi[12]);
+  const __m128i cospi20 = _mm_set1_epi32(cospi[20]);
+  const __m128i cospi4 = _mm_set1_epi32(cospi[4]);
+  const __m128i cospim52 = _mm_set1_epi32(-cospi[52]);
+  const __m128i cospim36 = _mm_set1_epi32(-cospi[36]);
+  const __m128i cospi56 = _mm_set1_epi32(cospi[56]);
+  const __m128i cospi24 = _mm_set1_epi32(cospi[24]);
+  const __m128i cospi40 = _mm_set1_epi32(cospi[40]);
+  const __m128i cospi8 = _mm_set1_epi32(cospi[8]);
+  const __m128i cospim40 = _mm_set1_epi32(-cospi[40]);
+  const __m128i cospim8 = _mm_set1_epi32(-cospi[8]);
+  const __m128i cospim56 = _mm_set1_epi32(-cospi[56]);
+  const __m128i cospim24 = _mm_set1_epi32(-cospi[24]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i cospim32 = _mm_set1_epi32(-cospi[32]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospim48 = _mm_set1_epi32(-cospi[48]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i cospim16 = _mm_set1_epi32(-cospi[16]);
+  const __m128i rounding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+  __m128i bf1[32];
+
+  // stage 0
+  // stage 1
+
+  bf1[0] = in[0];
+  bf1[2] = in[8];
+  bf1[4] = in[4];
+  bf1[6] = in[12];
+  bf1[8] = in[2];
+  bf1[10] = in[10];
+  bf1[12] = in[6];
+  bf1[14] = in[14];
+  bf1[16] = in[1];
+  bf1[18] = in[9];
+  bf1[20] = in[5];
+  bf1[22] = in[13];
+  bf1[24] = in[3];
+  bf1[26] = in[11];
+  bf1[28] = in[7];
+  bf1[30] = in[15];
+
+  // stage 2
+  bf1[31] = half_btf_0_sse4_1(&cospi2, &bf1[16], &rounding, bit);
+  bf1[16] = half_btf_0_sse4_1(&cospi62, &bf1[16], &rounding, bit);
+  bf1[17] = half_btf_0_sse4_1(&cospim34, &bf1[30], &rounding, bit);
+  bf1[30] = half_btf_0_sse4_1(&cospi30, &bf1[30], &rounding, bit);
+  bf1[29] = half_btf_0_sse4_1(&cospi18, &bf1[18], &rounding, bit);
+  bf1[18] = half_btf_0_sse4_1(&cospi46, &bf1[18], &rounding, bit);
+  bf1[19] = half_btf_0_sse4_1(&cospim50, &bf1[28], &rounding, bit);
+  bf1[28] = half_btf_0_sse4_1(&cospi14, &bf1[28], &rounding, bit);
+  bf1[27] = half_btf_0_sse4_1(&cospi10, &bf1[20], &rounding, bit);
+  bf1[20] = half_btf_0_sse4_1(&cospi54, &bf1[20], &rounding, bit);
+  bf1[21] = half_btf_0_sse4_1(&cospim42, &bf1[26], &rounding, bit);
+  bf1[26] = half_btf_0_sse4_1(&cospi22, &bf1[26], &rounding, bit);
+  bf1[25] = half_btf_0_sse4_1(&cospi26, &bf1[22], &rounding, bit);
+  bf1[22] = half_btf_0_sse4_1(&cospi38, &bf1[22], &rounding, bit);
+  bf1[23] = half_btf_0_sse4_1(&cospim58, &bf1[24], &rounding, bit);
+  bf1[24] = half_btf_0_sse4_1(&cospi6, &bf1[24], &rounding, bit);
+
+  // stage 3
+  bf1[15] = half_btf_0_sse4_1(&cospi4, &bf1[8], &rounding, bit);
+  bf1[8] = half_btf_0_sse4_1(&cospi60, &bf1[8], &rounding, bit);
+  bf1[9] = half_btf_0_sse4_1(&cospim36, &bf1[14], &rounding, bit);
+  bf1[14] = half_btf_0_sse4_1(&cospi28, &bf1[14], &rounding, bit);
+  bf1[13] = half_btf_0_sse4_1(&cospi20, &bf1[10], &rounding, bit);
+  bf1[10] = half_btf_0_sse4_1(&cospi44, &bf1[10], &rounding, bit);
+  bf1[11] = half_btf_0_sse4_1(&cospim52, &bf1[12], &rounding, bit);
+  bf1[12] = half_btf_0_sse4_1(&cospi12, &bf1[12], &rounding, bit);
+
+  addsub_sse4_1(bf1[16], bf1[17], bf1 + 16, bf1 + 17, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[19], bf1[18], bf1 + 19, bf1 + 18, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[20], bf1[21], bf1 + 20, bf1 + 21, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[23], bf1[22], bf1 + 23, bf1 + 22, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[24], bf1[25], bf1 + 24, bf1 + 25, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[27], bf1[26], bf1 + 27, bf1 + 26, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[28], bf1[29], bf1 + 28, bf1 + 29, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[31], bf1[30], bf1 + 31, bf1 + 30, &clamp_lo, &clamp_hi);
+  // stage 4
+  bf1[7] = half_btf_0_sse4_1(&cospi8, &bf1[4], &rounding, bit);
+  bf1[4] = half_btf_0_sse4_1(&cospi56, &bf1[4], &rounding, bit);
+  bf1[5] = half_btf_0_sse4_1(&cospim40, &bf1[6], &rounding, bit);
+  bf1[6] = half_btf_0_sse4_1(&cospi24, &bf1[6], &rounding, bit);
+
+  addsub_sse4_1(bf1[8], bf1[9], bf1 + 8, bf1 + 9, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[11], bf1[10], bf1 + 11, bf1 + 10, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[12], bf1[13], bf1 + 12, bf1 + 13, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[15], bf1[14], bf1 + 15, bf1 + 14, &clamp_lo, &clamp_hi);
+
+  idct32_stage4_sse4_1(bf1, &cospim8, &cospi56, &cospi8, &cospim56, &cospim40,
+                       &cospi24, &cospi40, &cospim24, &rounding, bit);
+
+  // stage 5
+  bf1[0] = half_btf_0_sse4_1(&cospi32, &bf1[0], &rounding, bit);
+  bf1[1] = bf1[0];
+  bf1[3] = half_btf_0_sse4_1(&cospi16, &bf1[2], &rounding, bit);
+  bf1[2] = half_btf_0_sse4_1(&cospi48, &bf1[2], &rounding, bit);
+
+  addsub_sse4_1(bf1[4], bf1[5], bf1 + 4, bf1 + 5, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[7], bf1[6], bf1 + 7, bf1 + 6, &clamp_lo, &clamp_hi);
+
+  idct32_stage5_sse4_1(bf1, &cospim16, &cospi48, &cospi16, &cospim48, &clamp_lo,
+                       &clamp_hi, &rounding, bit);
 
+  // stage 6
+  addsub_sse4_1(bf1[0], bf1[3], bf1 + 0, bf1 + 3, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[1], bf1[2], bf1 + 1, bf1 + 2, &clamp_lo, &clamp_hi);
+
+  idct32_stage6_sse4_1(bf1, &cospim32, &cospi32, &cospim16, &cospi48, &cospi16,
+                       &cospim48, &clamp_lo, &clamp_hi, &rounding, bit);
+
+  // stage 7
+  idct32_stage7_sse4_1(bf1, &cospim32, &cospi32, &clamp_lo, &clamp_hi,
+                       &rounding, bit);
+
+  // stage 8
+  idct32_stage8_sse4_1(bf1, &cospim32, &cospi32, &clamp_lo, &clamp_hi,
+                       &rounding, bit);
+
+  // stage 9
+  idct32_stage9_sse4_1(bf1, out, do_cols, bd, out_shift, log_range);
+}
+
+static void idct32x32_sse4_1(__m128i *in, __m128i *out, int bit, int do_cols,
+                             int bd, int out_shift) {
+  const int32_t *cospi = cospi_arr(bit);
+  const __m128i cospi62 = _mm_set1_epi32(cospi[62]);
+  const __m128i cospi30 = _mm_set1_epi32(cospi[30]);
+  const __m128i cospi46 = _mm_set1_epi32(cospi[46]);
+  const __m128i cospi14 = _mm_set1_epi32(cospi[14]);
+  const __m128i cospi54 = _mm_set1_epi32(cospi[54]);
+  const __m128i cospi22 = _mm_set1_epi32(cospi[22]);
+  const __m128i cospi38 = _mm_set1_epi32(cospi[38]);
+  const __m128i cospi6 = _mm_set1_epi32(cospi[6]);
+  const __m128i cospi58 = _mm_set1_epi32(cospi[58]);
+  const __m128i cospi26 = _mm_set1_epi32(cospi[26]);
+  const __m128i cospi42 = _mm_set1_epi32(cospi[42]);
+  const __m128i cospi10 = _mm_set1_epi32(cospi[10]);
+  const __m128i cospi50 = _mm_set1_epi32(cospi[50]);
+  const __m128i cospi18 = _mm_set1_epi32(cospi[18]);
+  const __m128i cospi34 = _mm_set1_epi32(cospi[34]);
+  const __m128i cospi2 = _mm_set1_epi32(cospi[2]);
+  const __m128i cospim58 = _mm_set1_epi32(-cospi[58]);
+  const __m128i cospim26 = _mm_set1_epi32(-cospi[26]);
+  const __m128i cospim42 = _mm_set1_epi32(-cospi[42]);
+  const __m128i cospim10 = _mm_set1_epi32(-cospi[10]);
+  const __m128i cospim50 = _mm_set1_epi32(-cospi[50]);
+  const __m128i cospim18 = _mm_set1_epi32(-cospi[18]);
+  const __m128i cospim34 = _mm_set1_epi32(-cospi[34]);
+  const __m128i cospim2 = _mm_set1_epi32(-cospi[2]);
+  const __m128i cospi60 = _mm_set1_epi32(cospi[60]);
+  const __m128i cospi28 = _mm_set1_epi32(cospi[28]);
+  const __m128i cospi44 = _mm_set1_epi32(cospi[44]);
+  const __m128i cospi12 = _mm_set1_epi32(cospi[12]);
+  const __m128i cospi52 = _mm_set1_epi32(cospi[52]);
+  const __m128i cospi20 = _mm_set1_epi32(cospi[20]);
+  const __m128i cospi36 = _mm_set1_epi32(cospi[36]);
+  const __m128i cospi4 = _mm_set1_epi32(cospi[4]);
+  const __m128i cospim52 = _mm_set1_epi32(-cospi[52]);
+  const __m128i cospim20 = _mm_set1_epi32(-cospi[20]);
+  const __m128i cospim36 = _mm_set1_epi32(-cospi[36]);
+  const __m128i cospim4 = _mm_set1_epi32(-cospi[4]);
+  const __m128i cospi56 = _mm_set1_epi32(cospi[56]);
+  const __m128i cospi24 = _mm_set1_epi32(cospi[24]);
+  const __m128i cospi40 = _mm_set1_epi32(cospi[40]);
+  const __m128i cospi8 = _mm_set1_epi32(cospi[8]);
+  const __m128i cospim40 = _mm_set1_epi32(-cospi[40]);
+  const __m128i cospim8 = _mm_set1_epi32(-cospi[8]);
+  const __m128i cospim56 = _mm_set1_epi32(-cospi[56]);
+  const __m128i cospim24 = _mm_set1_epi32(-cospi[24]);
+  const __m128i cospi32 = _mm_set1_epi32(cospi[32]);
+  const __m128i cospim32 = _mm_set1_epi32(-cospi[32]);
+  const __m128i cospi48 = _mm_set1_epi32(cospi[48]);
+  const __m128i cospim48 = _mm_set1_epi32(-cospi[48]);
+  const __m128i cospi16 = _mm_set1_epi32(cospi[16]);
+  const __m128i cospim16 = _mm_set1_epi32(-cospi[16]);
+  const __m128i rounding = _mm_set1_epi32(1 << (bit - 1));
+  const int log_range = AOMMAX(16, bd + (do_cols ? 6 : 8));
+  const __m128i clamp_lo = _mm_set1_epi32(-(1 << (log_range - 1)));
+  const __m128i clamp_hi = _mm_set1_epi32((1 << (log_range - 1)) - 1);
+  __m128i bf1[32], bf0[32];
+
+  // stage 0
+  // stage 1
+  bf1[0] = in[0];
+  bf1[1] = in[16];
+  bf1[2] = in[8];
+  bf1[3] = in[24];
+  bf1[4] = in[4];
+  bf1[5] = in[20];
+  bf1[6] = in[12];
+  bf1[7] = in[28];
+  bf1[8] = in[2];
+  bf1[9] = in[18];
+  bf1[10] = in[10];
+  bf1[11] = in[26];
+  bf1[12] = in[6];
+  bf1[13] = in[22];
+  bf1[14] = in[14];
+  bf1[15] = in[30];
+  bf1[16] = in[1];
+  bf1[17] = in[17];
+  bf1[18] = in[9];
+  bf1[19] = in[25];
+  bf1[20] = in[5];
+  bf1[21] = in[21];
+  bf1[22] = in[13];
+  bf1[23] = in[29];
+  bf1[24] = in[3];
+  bf1[25] = in[19];
+  bf1[26] = in[11];
+  bf1[27] = in[27];
+  bf1[28] = in[7];
+  bf1[29] = in[23];
+  bf1[30] = in[15];
+  bf1[31] = in[31];
+
+  // stage 2
+  bf0[0] = bf1[0];
+  bf0[1] = bf1[1];
+  bf0[2] = bf1[2];
+  bf0[3] = bf1[3];
+  bf0[4] = bf1[4];
+  bf0[5] = bf1[5];
+  bf0[6] = bf1[6];
+  bf0[7] = bf1[7];
+  bf0[8] = bf1[8];
+  bf0[9] = bf1[9];
+  bf0[10] = bf1[10];
+  bf0[11] = bf1[11];
+  bf0[12] = bf1[12];
+  bf0[13] = bf1[13];
+  bf0[14] = bf1[14];
+  bf0[15] = bf1[15];
+  bf0[16] =
+      half_btf_sse4_1(&cospi62, &bf1[16], &cospim2, &bf1[31], &rounding, bit);
+  bf0[17] =
+      half_btf_sse4_1(&cospi30, &bf1[17], &cospim34, &bf1[30], &rounding, bit);
+  bf0[18] =
+      half_btf_sse4_1(&cospi46, &bf1[18], &cospim18, &bf1[29], &rounding, bit);
+  bf0[19] =
+      half_btf_sse4_1(&cospi14, &bf1[19], &cospim50, &bf1[28], &rounding, bit);
+  bf0[20] =
+      half_btf_sse4_1(&cospi54, &bf1[20], &cospim10, &bf1[27], &rounding, bit);
+  bf0[21] =
+      half_btf_sse4_1(&cospi22, &bf1[21], &cospim42, &bf1[26], &rounding, bit);
+  bf0[22] =
+      half_btf_sse4_1(&cospi38, &bf1[22], &cospim26, &bf1[25], &rounding, bit);
+  bf0[23] =
+      half_btf_sse4_1(&cospi6, &bf1[23], &cospim58, &bf1[24], &rounding, bit);
+  bf0[24] =
+      half_btf_sse4_1(&cospi58, &bf1[23], &cospi6, &bf1[24], &rounding, bit);
+  bf0[25] =
+      half_btf_sse4_1(&cospi26, &bf1[22], &cospi38, &bf1[25], &rounding, bit);
+  bf0[26] =
+      half_btf_sse4_1(&cospi42, &bf1[21], &cospi22, &bf1[26], &rounding, bit);
+  bf0[27] =
+      half_btf_sse4_1(&cospi10, &bf1[20], &cospi54, &bf1[27], &rounding, bit);
+  bf0[28] =
+      half_btf_sse4_1(&cospi50, &bf1[19], &cospi14, &bf1[28], &rounding, bit);
+  bf0[29] =
+      half_btf_sse4_1(&cospi18, &bf1[18], &cospi46, &bf1[29], &rounding, bit);
+  bf0[30] =
+      half_btf_sse4_1(&cospi34, &bf1[17], &cospi30, &bf1[30], &rounding, bit);
+  bf0[31] =
+      half_btf_sse4_1(&cospi2, &bf1[16], &cospi62, &bf1[31], &rounding, bit);
+
+  // stage 3
+  bf1[0] = bf0[0];
+  bf1[1] = bf0[1];
+  bf1[2] = bf0[2];
+  bf1[3] = bf0[3];
+  bf1[4] = bf0[4];
+  bf1[5] = bf0[5];
+  bf1[6] = bf0[6];
+  bf1[7] = bf0[7];
+  bf1[8] =
+      half_btf_sse4_1(&cospi60, &bf0[8], &cospim4, &bf0[15], &rounding, bit);
+  bf1[9] =
+      half_btf_sse4_1(&cospi28, &bf0[9], &cospim36, &bf0[14], &rounding, bit);
+  bf1[10] =
+      half_btf_sse4_1(&cospi44, &bf0[10], &cospim20, &bf0[13], &rounding, bit);
+  bf1[11] =
+      half_btf_sse4_1(&cospi12, &bf0[11], &cospim52, &bf0[12], &rounding, bit);
+  bf1[12] =
+      half_btf_sse4_1(&cospi52, &bf0[11], &cospi12, &bf0[12], &rounding, bit);
+  bf1[13] =
+      half_btf_sse4_1(&cospi20, &bf0[10], &cospi44, &bf0[13], &rounding, bit);
+  bf1[14] =
+      half_btf_sse4_1(&cospi36, &bf0[9], &cospi28, &bf0[14], &rounding, bit);
+  bf1[15] =
+      half_btf_sse4_1(&cospi4, &bf0[8], &cospi60, &bf0[15], &rounding, bit);
+
+  addsub_sse4_1(bf0[16], bf0[17], bf1 + 16, bf1 + 17, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[19], bf0[18], bf1 + 19, bf1 + 18, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[20], bf0[21], bf1 + 20, bf1 + 21, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[23], bf0[22], bf1 + 23, bf1 + 22, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[24], bf0[25], bf1 + 24, bf1 + 25, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[27], bf0[26], bf1 + 27, bf1 + 26, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[28], bf0[29], bf1 + 28, bf1 + 29, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[31], bf0[30], bf1 + 31, bf1 + 30, &clamp_lo, &clamp_hi);
+
+  // stage 4
+  bf0[0] = bf1[0];
+  bf0[1] = bf1[1];
+  bf0[2] = bf1[2];
+  bf0[3] = bf1[3];
+  bf0[4] =
+      half_btf_sse4_1(&cospi56, &bf1[4], &cospim8, &bf1[7], &rounding, bit);
+  bf0[5] =
+      half_btf_sse4_1(&cospi24, &bf1[5], &cospim40, &bf1[6], &rounding, bit);
+  bf0[6] =
+      half_btf_sse4_1(&cospi40, &bf1[5], &cospi24, &bf1[6], &rounding, bit);
+  bf0[7] = half_btf_sse4_1(&cospi8, &bf1[4], &cospi56, &bf1[7], &rounding, bit);
+
+  addsub_sse4_1(bf1[8], bf1[9], bf0 + 8, bf0 + 9, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[11], bf1[10], bf0 + 11, bf0 + 10, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[12], bf1[13], bf0 + 12, bf0 + 13, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[15], bf1[14], bf0 + 15, bf0 + 14, &clamp_lo, &clamp_hi);
+
+  bf0[16] = bf1[16];
+  bf0[17] =
+      half_btf_sse4_1(&cospim8, &bf1[17], &cospi56, &bf1[30], &rounding, bit);
+  bf0[18] =
+      half_btf_sse4_1(&cospim56, &bf1[18], &cospim8, &bf1[29], &rounding, bit);
+  bf0[19] = bf1[19];
+  bf0[20] = bf1[20];
+  bf0[21] =
+      half_btf_sse4_1(&cospim40, &bf1[21], &cospi24, &bf1[26], &rounding, bit);
+  bf0[22] =
+      half_btf_sse4_1(&cospim24, &bf1[22], &cospim40, &bf1[25], &rounding, bit);
+  bf0[23] = bf1[23];
+  bf0[24] = bf1[24];
+  bf0[25] =
+      half_btf_sse4_1(&cospim40, &bf1[22], &cospi24, &bf1[25], &rounding, bit);
+  bf0[26] =
+      half_btf_sse4_1(&cospi24, &bf1[21], &cospi40, &bf1[26], &rounding, bit);
+  bf0[27] = bf1[27];
+  bf0[28] = bf1[28];
+  bf0[29] =
+      half_btf_sse4_1(&cospim8, &bf1[18], &cospi56, &bf1[29], &rounding, bit);
+  bf0[30] =
+      half_btf_sse4_1(&cospi56, &bf1[17], &cospi8, &bf1[30], &rounding, bit);
+  bf0[31] = bf1[31];
+
+  // stage 5
+  bf1[0] =
+      half_btf_sse4_1(&cospi32, &bf0[0], &cospi32, &bf0[1], &rounding, bit);
+  bf1[1] =
+      half_btf_sse4_1(&cospi32, &bf0[0], &cospim32, &bf0[1], &rounding, bit);
+  bf1[2] =
+      half_btf_sse4_1(&cospi48, &bf0[2], &cospim16, &bf0[3], &rounding, bit);
+  bf1[3] =
+      half_btf_sse4_1(&cospi16, &bf0[2], &cospi48, &bf0[3], &rounding, bit);
+  addsub_sse4_1(bf0[4], bf0[5], bf1 + 4, bf1 + 5, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[7], bf0[6], bf1 + 7, bf1 + 6, &clamp_lo, &clamp_hi);
+  bf1[8] = bf0[8];
+  bf1[9] =
+      half_btf_sse4_1(&cospim16, &bf0[9], &cospi48, &bf0[14], &rounding, bit);
+  bf1[10] =
+      half_btf_sse4_1(&cospim48, &bf0[10], &cospim16, &bf0[13], &rounding, bit);
+  bf1[11] = bf0[11];
+  bf1[12] = bf0[12];
+  bf1[13] =
+      half_btf_sse4_1(&cospim16, &bf0[10], &cospi48, &bf0[13], &rounding, bit);
+  bf1[14] =
+      half_btf_sse4_1(&cospi48, &bf0[9], &cospi16, &bf0[14], &rounding, bit);
+  bf1[15] = bf0[15];
+  addsub_sse4_1(bf0[16], bf0[19], bf1 + 16, bf1 + 19, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[17], bf0[18], bf1 + 17, bf1 + 18, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[23], bf0[20], bf1 + 23, bf1 + 20, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[22], bf0[21], bf1 + 22, bf1 + 21, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[24], bf0[27], bf1 + 24, bf1 + 27, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[25], bf0[26], bf1 + 25, bf1 + 26, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[31], bf0[28], bf1 + 31, bf1 + 28, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[30], bf0[29], bf1 + 30, bf1 + 29, &clamp_lo, &clamp_hi);
+
+  // stage 6
+  addsub_sse4_1(bf1[0], bf1[3], bf0 + 0, bf0 + 3, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[1], bf1[2], bf0 + 1, bf0 + 2, &clamp_lo, &clamp_hi);
+  bf0[4] = bf1[4];
+  bf0[5] =
+      half_btf_sse4_1(&cospim32, &bf1[5], &cospi32, &bf1[6], &rounding, bit);
+  bf0[6] =
+      half_btf_sse4_1(&cospi32, &bf1[5], &cospi32, &bf1[6], &rounding, bit);
+  bf0[7] = bf1[7];
+  addsub_sse4_1(bf1[8], bf1[11], bf0 + 8, bf0 + 11, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[9], bf1[10], bf0 + 9, bf0 + 10, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[15], bf1[12], bf0 + 15, bf0 + 12, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[14], bf1[13], bf0 + 14, bf0 + 13, &clamp_lo, &clamp_hi);
+  bf0[16] = bf1[16];
+  bf0[17] = bf1[17];
+  bf0[18] =
+      half_btf_sse4_1(&cospim16, &bf1[18], &cospi48, &bf1[29], &rounding, bit);
+  bf0[19] =
+      half_btf_sse4_1(&cospim16, &bf1[19], &cospi48, &bf1[28], &rounding, bit);
+  bf0[20] =
+      half_btf_sse4_1(&cospim48, &bf1[20], &cospim16, &bf1[27], &rounding, bit);
+  bf0[21] =
+      half_btf_sse4_1(&cospim48, &bf1[21], &cospim16, &bf1[26], &rounding, bit);
+  bf0[22] = bf1[22];
+  bf0[23] = bf1[23];
+  bf0[24] = bf1[24];
+  bf0[25] = bf1[25];
+  bf0[26] =
+      half_btf_sse4_1(&cospim16, &bf1[21], &cospi48, &bf1[26], &rounding, bit);
+  bf0[27] =
+      half_btf_sse4_1(&cospim16, &bf1[20], &cospi48, &bf1[27], &rounding, bit);
+  bf0[28] =
+      half_btf_sse4_1(&cospi48, &bf1[19], &cospi16, &bf1[28], &rounding, bit);
+  bf0[29] =
+      half_btf_sse4_1(&cospi48, &bf1[18], &cospi16, &bf1[29], &rounding, bit);
+  bf0[30] = bf1[30];
+  bf0[31] = bf1[31];
+
+  // stage 7
+  addsub_sse4_1(bf0[0], bf0[7], bf1 + 0, bf1 + 7, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[1], bf0[6], bf1 + 1, bf1 + 6, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[2], bf0[5], bf1 + 2, bf1 + 5, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[3], bf0[4], bf1 + 3, bf1 + 4, &clamp_lo, &clamp_hi);
+  bf1[8] = bf0[8];
+  bf1[9] = bf0[9];
+  bf1[10] =
+      half_btf_sse4_1(&cospim32, &bf0[10], &cospi32, &bf0[13], &rounding, bit);
+  bf1[11] =
+      half_btf_sse4_1(&cospim32, &bf0[11], &cospi32, &bf0[12], &rounding, bit);
+  bf1[12] =
+      half_btf_sse4_1(&cospi32, &bf0[11], &cospi32, &bf0[12], &rounding, bit);
+  bf1[13] =
+      half_btf_sse4_1(&cospi32, &bf0[10], &cospi32, &bf0[13], &rounding, bit);
+  bf1[14] = bf0[14];
+  bf1[15] = bf0[15];
+  addsub_sse4_1(bf0[16], bf0[23], bf1 + 16, bf1 + 23, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[17], bf0[22], bf1 + 17, bf1 + 22, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[18], bf0[21], bf1 + 18, bf1 + 21, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[19], bf0[20], bf1 + 19, bf1 + 20, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[31], bf0[24], bf1 + 31, bf1 + 24, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[30], bf0[25], bf1 + 30, bf1 + 25, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[29], bf0[26], bf1 + 29, bf1 + 26, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf0[28], bf0[27], bf1 + 28, bf1 + 27, &clamp_lo, &clamp_hi);
+
+  // stage 8
+  addsub_sse4_1(bf1[0], bf1[15], bf0 + 0, bf0 + 15, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[1], bf1[14], bf0 + 1, bf0 + 14, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[2], bf1[13], bf0 + 2, bf0 + 13, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[3], bf1[12], bf0 + 3, bf0 + 12, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[4], bf1[11], bf0 + 4, bf0 + 11, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[5], bf1[10], bf0 + 5, bf0 + 10, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[6], bf1[9], bf0 + 6, bf0 + 9, &clamp_lo, &clamp_hi);
+  addsub_sse4_1(bf1[7], bf1[8], bf0 + 7, bf0 + 8, &clamp_lo, &clamp_hi);
+  bf0[16] = bf1[16];
+  bf0[17] = bf1[17];
+  bf0[18] = bf1[18];
+  bf0[19] = bf1[19];
+  bf0[20] =
+      half_btf_sse4_1(&cospim32, &bf1[20], &cospi32, &bf1[27], &rounding, bit);
+  bf0[21] =
+      half_btf_sse4_1(&cospim32, &bf1[21], &cospi32, &bf1[26], &rounding, bit);
+  bf0[22] =
+      half_btf_sse4_1(&cospim32, &bf1[22], &cospi32, &bf1[25], &rounding, bit);
+  bf0[23] =
+      half_btf_sse4_1(&cospim32, &bf1[23], &cospi32, &bf1[24], &rounding, bit);
+  bf0[24] =
+      half_btf_sse4_1(&cospi32, &bf1[23], &cospi32, &bf1[24], &rounding, bit);
+  bf0[25] =
+      half_btf_sse4_1(&cospi32, &bf1[22], &cospi32, &bf1[25], &rounding, bit);
+  bf0[26] =
+      half_btf_sse4_1(&cospi32, &bf1[21], &cospi32, &bf1[26], &rounding, bit);
+  bf0[27] =
+      half_btf_sse4_1(&cospi32, &bf1[20], &cospi32, &bf1[27], &rounding, bit);
+  bf0[28] = bf1[28];
+  bf0[29] = bf1[29];
+  bf0[30] = bf1[30];
+  bf0[31] = bf1[31];
+
+  // stage 9
+  if (do_cols) {
+    addsub_no_clamp_sse4_1(bf0[0], bf0[31], out + 0, out + 31);
+    addsub_no_clamp_sse4_1(bf0[1], bf0[30], out + 1, out + 30);
+    addsub_no_clamp_sse4_1(bf0[2], bf0[29], out + 2, out + 29);
+    addsub_no_clamp_sse4_1(bf0[3], bf0[28], out + 3, out + 28);
+    addsub_no_clamp_sse4_1(bf0[4], bf0[27], out + 4, out + 27);
+    addsub_no_clamp_sse4_1(bf0[5], bf0[26], out + 5, out + 26);
+    addsub_no_clamp_sse4_1(bf0[6], bf0[25], out + 6, out + 25);
+    addsub_no_clamp_sse4_1(bf0[7], bf0[24], out + 7, out + 24);
+    addsub_no_clamp_sse4_1(bf0[8], bf0[23], out + 8, out + 23);
+    addsub_no_clamp_sse4_1(bf0[9], bf0[22], out + 9, out + 22);
+    addsub_no_clamp_sse4_1(bf0[10], bf0[21], out + 10, out + 21);
+    addsub_no_clamp_sse4_1(bf0[11], bf0[20], out + 11, out + 20);
+    addsub_no_clamp_sse4_1(bf0[12], bf0[19], out + 12, out + 19);
+    addsub_no_clamp_sse4_1(bf0[13], bf0[18], out + 13, out + 18);
+    addsub_no_clamp_sse4_1(bf0[14], bf0[17], out + 14, out + 17);
+    addsub_no_clamp_sse4_1(bf0[15], bf0[16], out + 15, out + 16);
+  } else {
+    const int log_range_out = AOMMAX(16, bd + 6);
+    const __m128i clamp_lo_out = _mm_set1_epi32(AOMMAX(
+        -(1 << (log_range_out - 1)), -(1 << (log_range - 1 - out_shift))));
+    const __m128i clamp_hi_out = _mm_set1_epi32(AOMMIN(
+        (1 << (log_range_out - 1)) - 1, (1 << (log_range - 1 - out_shift))));
+
+    addsub_shift_sse4_1(bf0[0], bf0[31], out + 0, out + 31, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[1], bf0[30], out + 1, out + 30, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[2], bf0[29], out + 2, out + 29, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[3], bf0[28], out + 3, out + 28, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[4], bf0[27], out + 4, out + 27, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[5], bf0[26], out + 5, out + 26, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[6], bf0[25], out + 6, out + 25, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[7], bf0[24], out + 7, out + 24, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[8], bf0[23], out + 8, out + 23, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[9], bf0[22], out + 9, out + 22, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[10], bf0[21], out + 10, out + 21, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[11], bf0[20], out + 11, out + 20, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[12], bf0[19], out + 12, out + 19, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[13], bf0[18], out + 13, out + 18, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[14], bf0[17], out + 14, out + 17, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+    addsub_shift_sse4_1(bf0[15], bf0[16], out + 15, out + 16, &clamp_lo_out,
+                        &clamp_hi_out, out_shift);
+  }
+}
+
+void av1_highbd_inv_txfm_add_8x8_sse4_1(const tran_low_t *input, uint8_t *dest,
+                                        int stride,
+                                        const TxfmParam *txfm_param) {
+  int bd = txfm_param->bd;
+  const TX_TYPE tx_type = txfm_param->tx_type;
+  const int32_t *src = cast_to_int32(input);
+  switch (tx_type) {
+      // Assembly version doesn't support some transform types, so use C version
+      // for those.
+    case V_DCT:
+    case H_DCT:
+    case V_ADST:
+    case H_ADST:
+    case V_FLIPADST:
+    case H_FLIPADST:
+    case IDTX:
+      av1_inv_txfm2d_add_8x8_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
+                               bd);
+      break;
+    default:
+      av1_inv_txfm2d_add_8x8_sse4_1(src, CONVERT_TO_SHORTPTR(dest), stride,
+                                    tx_type, bd);
+      break;
+  }
+}
+
+void av1_highbd_inv_txfm_add_16x8_sse4_1(const tran_low_t *input, uint8_t *dest,
+                                         int stride,
+                                         const TxfmParam *txfm_param) {
+  int bd = txfm_param->bd;
+  const TX_TYPE tx_type = txfm_param->tx_type;
+  const int32_t *src = cast_to_int32(input);
+  switch (tx_type) {
+      // Assembly version doesn't support some transform types, so use C version
+      // for those.
+    case V_DCT:
+    case H_DCT:
+    case V_ADST:
+    case H_ADST:
+    case V_FLIPADST:
+    case H_FLIPADST:
+    case IDTX:
+      av1_inv_txfm2d_add_16x8_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+                                txfm_param->tx_type, txfm_param->bd);
+      break;
+    default:
+      av1_highbd_inv_txfm2d_add_universe_sse4_1(input, dest, stride, tx_type,
+                                                txfm_param->tx_size,
+                                                txfm_param->eob, bd);
+      break;
+  }
+}
+
+void av1_highbd_inv_txfm_add_8x16_sse4_1(const tran_low_t *input, uint8_t *dest,
+                                         int stride,
+                                         const TxfmParam *txfm_param) {
+  int bd = txfm_param->bd;
+  const TX_TYPE tx_type = txfm_param->tx_type;
+  const int32_t *src = cast_to_int32(input);
+  switch (tx_type) {
+      // Assembly version doesn't support some transform types, so use C version
+      // for those.
+    case V_DCT:
+    case H_DCT:
+    case V_ADST:
+    case H_ADST:
+    case V_FLIPADST:
+    case H_FLIPADST:
+    case IDTX:
+      av1_inv_txfm2d_add_8x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+                                txfm_param->tx_type, txfm_param->bd);
+      break;
+    default:
+      av1_highbd_inv_txfm2d_add_universe_sse4_1(input, dest, stride, tx_type,
+                                                txfm_param->tx_size,
+                                                txfm_param->eob, bd);
+      break;
+  }
+}
+
+void av1_highbd_inv_txfm_add_16x16_sse4_1(const tran_low_t *input,
+                                          uint8_t *dest, int stride,
+                                          const TxfmParam *txfm_param) {
+  int bd = txfm_param->bd;
+  const TX_TYPE tx_type = txfm_param->tx_type;
+  const int32_t *src = cast_to_int32(input);
+  switch (tx_type) {
+      // Assembly version doesn't support some transform types, so use C version
+      // for those.
+    case V_DCT:
+    case H_DCT:
+    case V_ADST:
+    case H_ADST:
+    case V_FLIPADST:
+    case H_FLIPADST:
+    case IDTX:
+      av1_inv_txfm2d_add_16x16_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+                                 tx_type, bd);
+      break;
+    default:
+      av1_highbd_inv_txfm2d_add_universe_sse4_1(input, dest, stride, tx_type,
+                                                txfm_param->tx_size,
+                                                txfm_param->eob, bd);
+      break;
+  }
+}
+
+void av1_highbd_inv_txfm_add_32x32_sse4_1(const tran_low_t *input,
+                                          uint8_t *dest, int stride,
+                                          const TxfmParam *txfm_param) {
+  int bd = txfm_param->bd;
+  const TX_TYPE tx_type = txfm_param->tx_type;
+  const int32_t *src = cast_to_int32(input);
   switch (tx_type) {
     case DCT_DCT:
-      load_buffer_64x64_lower_32x32(coeff, in);
-      transpose_64x64(in, out, 0);
-      idct64x64_sse4_1(out, in, inv_cos_bit_row[txw_idx][txh_idx], 0, bd,
-                       -shift[0]);
-      transpose_64x64(in, out, 1);
-      idct64x64_sse4_1(out, in, inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
-      write_buffer_64x64(in, output, stride, 0, 0, -shift[1], bd);
+      av1_highbd_inv_txfm2d_add_universe_sse4_1(input, dest, stride, tx_type,
+                                                txfm_param->tx_size,
+                                                txfm_param->eob, bd);
+      break;
+      // Assembly version doesn't support IDTX, so use C version for it.
+    case IDTX:
+      av1_inv_txfm2d_add_32x32_c(src, CONVERT_TO_SHORTPTR(dest), stride,
+                                 tx_type, bd);
       break;
+    default: assert(0);
+  }
+}
 
+void av1_highbd_inv_txfm_add_4x4_sse4_1(const tran_low_t *input, uint8_t *dest,
+                                        int stride,
+                                        const TxfmParam *txfm_param) {
+  assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
+  int eob = txfm_param->eob;
+  int bd = txfm_param->bd;
+  int lossless = txfm_param->lossless;
+  const int32_t *src = cast_to_int32(input);
+  const TX_TYPE tx_type = txfm_param->tx_type;
+  if (lossless) {
+    assert(tx_type == DCT_DCT);
+    av1_highbd_iwht4x4_add(input, dest, stride, eob, bd);
+    return;
+  }
+  switch (tx_type) {
+      // Assembly version doesn't support some transform types, so use C version
+      // for those.
+    case V_DCT:
+    case H_DCT:
+    case V_ADST:
+    case H_ADST:
+    case V_FLIPADST:
+    case H_FLIPADST:
+    case IDTX:
+      av1_inv_txfm2d_add_4x4_c(src, CONVERT_TO_SHORTPTR(dest), stride, tx_type,
+                               bd);
+      break;
     default:
-      av1_inv_txfm2d_add_64x64_c(coeff, output, stride, tx_type, bd);
+      av1_inv_txfm2d_add_4x4_sse4_1(src, CONVERT_TO_SHORTPTR(dest), stride,
+                                    tx_type, bd);
+      break;
+  }
+}
+
+static const transform_1d_sse4_1
+    highbd_txfm_all_1d_zeros_w8_arr[TX_SIZES][ITX_TYPES_1D][4] = {
+      {
+          { NULL, NULL, NULL, NULL },
+          { NULL, NULL, NULL, NULL },
+          { NULL, NULL, NULL, NULL },
+      },
+      { { idct8x8_low1_sse4_1, idct8x8_new_sse4_1, NULL, NULL },
+        { iadst8x8_low1_sse4_1, iadst8x8_new_sse4_1, NULL, NULL },
+        { NULL, NULL, NULL, NULL } },
+      {
+          { idct16x16_low1_sse4_1, idct16x16_low8_sse4_1, idct16x16_sse4_1,
+            NULL },
+          { iadst16x16_low1_sse4_1, iadst16x16_low8_sse4_1, iadst16x16_sse4_1,
+            NULL },
+          { NULL, NULL, NULL, NULL },
+      },
+      { { idct32x32_low1_sse4_1, idct32x32_low8_sse4_1, idct32x32_low16_sse4_1,
+          idct32x32_sse4_1 },
+        { NULL, NULL, NULL, NULL },
+        { NULL, NULL, NULL, NULL } },
+      { { idct64x64_low1_sse4_1, idct64x64_low8_sse4_1, idct64x64_low16_sse4_1,
+          idct64x64_sse4_1 },
+        { NULL, NULL, NULL, NULL },
+        { NULL, NULL, NULL, NULL } }
+    };
+
+static void highbd_inv_txfm2d_add_no_identity_sse41(const int32_t *input,
+                                                    uint16_t *output,
+                                                    int stride, TX_TYPE tx_type,
+                                                    TX_SIZE tx_size, int eob,
+                                                    const int bd) {
+  __m128i buf1[64 * 16];
+  int eobx, eoby;
+  get_eobx_eoby_scan_default(&eobx, &eoby, tx_size, eob);
+  const int8_t *shift = inv_txfm_shift_ls[tx_size];
+  const int txw_idx = get_txw_idx(tx_size);
+  const int txh_idx = get_txh_idx(tx_size);
+  const int txfm_size_col = tx_size_wide[tx_size];
+  const int txfm_size_row = tx_size_high[tx_size];
+  const int buf_size_w_div8 = txfm_size_col >> 2;
+  const int buf_size_nonzero_w_div8 = (eobx + 8) >> 3;
+  const int buf_size_nonzero_h_div8 = (eoby + 8) >> 3;
+  const int input_stride = AOMMIN(32, txfm_size_col);
+  const int rect_type = get_rect_tx_log_ratio(txfm_size_col, txfm_size_row);
+
+  const int fun_idx_x = lowbd_txfm_all_1d_zeros_idx[eobx];
+  const int fun_idx_y = lowbd_txfm_all_1d_zeros_idx[eoby];
+  const transform_1d_sse4_1 row_txfm =
+      highbd_txfm_all_1d_zeros_w8_arr[txw_idx][hitx_1d_tab[tx_type]][fun_idx_x];
+  const transform_1d_sse4_1 col_txfm =
+      highbd_txfm_all_1d_zeros_w8_arr[txh_idx][vitx_1d_tab[tx_type]][fun_idx_y];
+
+  assert(col_txfm != NULL);
+  assert(row_txfm != NULL);
+  int ud_flip, lr_flip;
+  get_flip_cfg(tx_type, &ud_flip, &lr_flip);
+
+  // 1st stage: column transform
+  for (int i = 0; i < buf_size_nonzero_h_div8 << 1; i++) {
+    __m128i buf0[64];
+    const int32_t *input_row = input + i * input_stride * 4;
+    for (int j = 0; j < buf_size_nonzero_w_div8 << 1; ++j) {
+      __m128i *buf0_cur = buf0 + j * 4;
+      load_buffer_32bit_input(input_row + j * 4, input_stride, buf0_cur, 4);
+
+      TRANSPOSE_4X4(buf0_cur[0], buf0_cur[1], buf0_cur[2], buf0_cur[3],
+                    buf0_cur[0], buf0_cur[1], buf0_cur[2], buf0_cur[3]);
+    }
+    if (rect_type == 1 || rect_type == -1) {
+      av1_round_shift_rect_array_32_sse4_1(
+          buf0, buf0, buf_size_nonzero_w_div8 << 3, 0, NewInvSqrt2);
+    }
+    row_txfm(buf0, buf0, inv_cos_bit_row[txw_idx][txh_idx], 0, bd, -shift[0]);
+
+    __m128i *_buf1 = buf1 + i * 4;
+    if (lr_flip) {
+      for (int j = 0; j < buf_size_w_div8; ++j) {
+        TRANSPOSE_4X4(buf0[4 * j + 3], buf0[4 * j + 2], buf0[4 * j + 1],
+                      buf0[4 * j],
+                      _buf1[txfm_size_row * (buf_size_w_div8 - 1 - j) + 0],
+                      _buf1[txfm_size_row * (buf_size_w_div8 - 1 - j) + 1],
+                      _buf1[txfm_size_row * (buf_size_w_div8 - 1 - j) + 2],
+                      _buf1[txfm_size_row * (buf_size_w_div8 - 1 - j) + 3]);
+      }
+    } else {
+      for (int j = 0; j < buf_size_w_div8; ++j) {
+        TRANSPOSE_4X4(
+            buf0[j * 4 + 0], buf0[j * 4 + 1], buf0[j * 4 + 2], buf0[j * 4 + 3],
+            _buf1[j * txfm_size_row + 0], _buf1[j * txfm_size_row + 1],
+            _buf1[j * txfm_size_row + 2], _buf1[j * txfm_size_row + 3]);
+      }
+    }
+  }
+  // 2nd stage: column transform
+  for (int i = 0; i < buf_size_w_div8; i++) {
+    col_txfm(buf1 + i * txfm_size_row, buf1 + i * txfm_size_row,
+             inv_cos_bit_col[txw_idx][txh_idx], 1, bd, 0);
+
+    av1_round_shift_array_32_sse4_1(buf1 + i * txfm_size_row,
+                                    buf1 + i * txfm_size_row, txfm_size_row,
+                                    -shift[1]);
+  }
+
+  // write to buffer
+  {
+    for (int i = 0; i < (txfm_size_col >> 3); i++) {
+      highbd_write_buffer_8xn_sse4_1(buf1 + i * txfm_size_row * 2,
+                                     output + 8 * i, stride, ud_flip,
+                                     txfm_size_row, bd);
+    }
+  }
+}
+
+void av1_highbd_inv_txfm2d_add_universe_sse4_1(const int32_t *input,
+                                               uint8_t *output, int stride,
+                                               TX_TYPE tx_type, TX_SIZE tx_size,
+                                               int eob, const int bd) {
+  switch (tx_type) {
+    case DCT_DCT:
+    case ADST_DCT:
+    case DCT_ADST:
+    case ADST_ADST:
+    case FLIPADST_DCT:
+    case DCT_FLIPADST:
+    case FLIPADST_FLIPADST:
+    case ADST_FLIPADST:
+    case FLIPADST_ADST:
+      highbd_inv_txfm2d_add_no_identity_sse41(
+          input, CONVERT_TO_SHORTPTR(output), stride, tx_type, tx_size, eob,
+          bd);
+      break;
+    default: assert(0); break;
+  }
+}
+
+void av1_highbd_inv_txfm_add_sse4_1(const tran_low_t *input, uint8_t *dest,
+                                    int stride, const TxfmParam *txfm_param) {
+  assert(av1_ext_tx_used[txfm_param->tx_set_type][txfm_param->tx_type]);
+  const TX_SIZE tx_size = txfm_param->tx_size;
+  switch (tx_size) {
+    case TX_32X32:
+      av1_highbd_inv_txfm_add_32x32_sse4_1(input, dest, stride, txfm_param);
+      break;
+    case TX_16X16:
+      av1_highbd_inv_txfm_add_16x16_sse4_1(input, dest, stride, txfm_param);
+      break;
+    case TX_8X8:
+      av1_highbd_inv_txfm_add_8x8_sse4_1(input, dest, stride, txfm_param);
+      break;
+    case TX_4X8:
+      av1_highbd_inv_txfm_add_4x8(input, dest, stride, txfm_param);
+      break;
+    case TX_8X4:
+      av1_highbd_inv_txfm_add_8x4(input, dest, stride, txfm_param);
+      break;
+    case TX_8X16:
+      av1_highbd_inv_txfm_add_8x16_sse4_1(input, dest, stride, txfm_param);
+      break;
+    case TX_16X8:
+      av1_highbd_inv_txfm_add_16x8_sse4_1(input, dest, stride, txfm_param);
+      break;
+    case TX_16X32:
+      av1_highbd_inv_txfm_add_16x32(input, dest, stride, txfm_param);
+      break;
+    case TX_32X16:
+      av1_highbd_inv_txfm_add_32x16(input, dest, stride, txfm_param);
+      break;
+    case TX_32X64:
+      av1_highbd_inv_txfm_add_32x64(input, dest, stride, txfm_param);
+      break;
+    case TX_64X32:
+      av1_highbd_inv_txfm_add_64x32(input, dest, stride, txfm_param);
+      break;
+    case TX_4X4:
+      av1_highbd_inv_txfm_add_4x4_sse4_1(input, dest, stride, txfm_param);
+      break;
+    case TX_16X4:
+      av1_highbd_inv_txfm_add_16x4(input, dest, stride, txfm_param);
+      break;
+    case TX_4X16:
+      av1_highbd_inv_txfm_add_4x16(input, dest, stride, txfm_param);
+      break;
+    case TX_8X32:
+      av1_highbd_inv_txfm_add_8x32(input, dest, stride, txfm_param);
+      break;
+    case TX_32X8:
+      av1_highbd_inv_txfm_add_32x8(input, dest, stride, txfm_param);
+      break;
+    case TX_64X64:
+    case TX_16X64:
+    case TX_64X16:
+      av1_highbd_inv_txfm2d_add_universe_sse4_1(
+          input, dest, stride, txfm_param->tx_type, txfm_param->tx_size,
+          txfm_param->eob, txfm_param->bd);
       break;
+    default: assert(0 && "Invalid transform size"); break;
   }
 }