shithub: dav1d

Download patch

ref: ab3da9097c84327f67ef713c54b124c20f8c7d66
parent: f250588c7636859c0a2b75b78f7acd776a677c23
author: Victorien Le Couviour--Tuffet <victorien.lecouviour.tuffet@gmail.com>
date: Wed Dec 5 13:32:43 EST 2018

looprestoration: add SSSE3 implementation

AVX2 code adaption

---------------------
x86_64:
------------------------------------------
selfguided_3x3_8bpc_c: 308692.1
selfguided_3x3_8bpc_ssse3: 112436.5
selfguided_3x3_8bpc_avx2: 61749.8
------------------------------------------
selfguided_5x5_8bpc_c: 312132.8
selfguided_5x5_8bpc_ssse3: 79513.3
selfguided_5x5_8bpc_avx2: 45947.3
------------------------------------------
selfguided_mix_8bpc_c: 588951.9
selfguided_mix_8bpc_ssse3: 196751.5
selfguided_mix_8bpc_avx2: 109091.6
------------------------------------------
wiener_chroma_8bpc_c: 258874.8
wiener_chroma_8bpc_ssse3: 28172.4
wiener_chroma_8bpc_avx2: 16910.5
------------------------------------------
wiener_luma_8bpc_c: 264432.3
wiener_luma_8bpc_ssse3: 27958.3
wiener_luma_8bpc_avx2: 17303.8
------------------------------------------

---------------------
x86_32:
------------------------------------------
selfguided_3x3_8bpc_c: 350430.5
selfguided_3x3_8bpc_ssse3: 128850.8
------------------------------------------
selfguided_5x5_8bpc_c: 313963.6
selfguided_5x5_8bpc_ssse3: 81988.8
------------------------------------------
selfguided_mix_8bpc_c: 630584.2
selfguided_mix_8bpc_ssse3: 211802.0
------------------------------------------
wiener_chroma_8bpc_c: 288928.5
wiener_chroma_8bpc_ssse3: 30336.7
------------------------------------------
wiener_luma_8bpc_c: 284500.6
wiener_luma_8bpc_ssse3: 29521.9
------------------------------------------

--- a/src/meson.build
+++ b/src/meson.build
@@ -122,6 +122,7 @@
             'x86/itx.asm',
             'x86/loopfilter.asm',
             'x86/looprestoration.asm',
+            'x86/looprestoration_ssse3.asm',
             'x86/mc.asm',
             'x86/mc_ssse3.asm',
             'x86/itx_ssse3.asm',
--- a/src/x86/looprestoration_init_tmpl.c
+++ b/src/x86/looprestoration_init_tmpl.c
@@ -32,15 +32,6 @@
 #include "common/intops.h"
 #include "src/tables.h"
 
-#if BITDEPTH == 8 && ARCH_X86_64
-void dav1d_wiener_filter_h_avx2(int16_t *dst, const pixel (*left)[4],
-                                const pixel *src, ptrdiff_t stride,
-                                const int16_t fh[7], const intptr_t w,
-                                int h, enum LrEdgeFlags edges);
-void dav1d_wiener_filter_v_avx2(pixel *dst, ptrdiff_t stride,
-                                const int16_t *mid, int w, int h,
-                                const int16_t fv[7], enum LrEdgeFlags edges);
-
 // Future potential optimizations:
 // - special chroma versions which don't filter [0]/[6];
 // - running filter_h_avx2 transposed (one col of 32 pixels per iteration, top
@@ -50,159 +41,186 @@
 //   to run 32 (like filter_h_avx2), and then all vpermqs can go;
 // - maybe split out the top/bottom filter_h_avx2 from the main body filter_h_avx2,
 //   since then the have_left condition can be inlined;
-// - consider having the wrapper (wiener_filter_avx2) also in hand-written
+// - consider having the wrapper (wiener_filter_${ext}) also in hand-written
 //   assembly, so the setup overhead is minimized.
 
-static void wiener_filter_avx2(pixel *const dst, const ptrdiff_t dst_stride,
-                               const pixel (*const left)[4],
-                               const pixel *lpf, const ptrdiff_t lpf_stride,
-                               const int w, const int h, const int16_t fh[7],
-                               const int16_t fv[7], const enum LrEdgeFlags edges)
-{
-    ALIGN_STK_32(int16_t, mid, 68 * 384,);
-
-    // horizontal filter
-    dav1d_wiener_filter_h_avx2(&mid[2 * 384], left, dst, dst_stride,
-                               fh, w, h, edges);
-    if (edges & LR_HAVE_TOP)
-        dav1d_wiener_filter_h_avx2(mid, NULL, lpf, lpf_stride,
-                                   fh, w, 2, edges);
-    if (edges & LR_HAVE_BOTTOM)
-        dav1d_wiener_filter_h_avx2(&mid[(2 + h) * 384], NULL,
-                                   lpf + 6 * PXSTRIDE(lpf_stride), lpf_stride,
-                                   fh, w, 2, edges);
-
-    dav1d_wiener_filter_v_avx2(dst, dst_stride, &mid[2*384], w, h, fv, edges);
+#define WIENER_FILTER(ext) \
+\
+void dav1d_wiener_filter_h_##ext(int16_t *dst, const pixel (*left)[4], \
+                                 const pixel *src, ptrdiff_t stride, \
+                                 const int16_t fh[7], const intptr_t w, \
+                                 int h, enum LrEdgeFlags edges); \
+void dav1d_wiener_filter_v_##ext(pixel *dst, ptrdiff_t stride, \
+                                 const int16_t *mid, int w, int h, \
+                                 const int16_t fv[7], enum LrEdgeFlags edges); \
+\
+static void wiener_filter_##ext(pixel *const dst, const ptrdiff_t dst_stride, \
+                                const pixel (*const left)[4], \
+                                const pixel *lpf, const ptrdiff_t lpf_stride, \
+                                const int w, const int h, const int16_t fh[7], \
+                                const int16_t fv[7], const enum LrEdgeFlags edges) \
+{ \
+    ALIGN_STK_32(int16_t, mid, 68 * 384,); \
+\
+    /* horizontal filter */ \
+    dav1d_wiener_filter_h_##ext(&mid[2 * 384], left, dst, dst_stride, \
+                               fh, w, h, edges); \
+    if (edges & LR_HAVE_TOP) \
+        dav1d_wiener_filter_h_##ext(mid, NULL, lpf, lpf_stride, \
+                                   fh, w, 2, edges); \
+    if (edges & LR_HAVE_BOTTOM) \
+        dav1d_wiener_filter_h_##ext(&mid[(2 + h) * 384], NULL, \
+                                   lpf + 6 * PXSTRIDE(lpf_stride), lpf_stride, \
+                                   fh, w, 2, edges); \
+\
+    dav1d_wiener_filter_v_##ext(dst, dst_stride, &mid[2*384], w, h, fv, edges); \
 }
 
-void dav1d_sgr_box3_h_avx2(int32_t *sumsq, int16_t *sum,
-                           const pixel (*left)[4],
-                           const pixel *src, const ptrdiff_t stride,
-                           const int w, const int h,
-                           const enum LrEdgeFlags edges);
-void dav1d_sgr_box3_v_avx2(int32_t *sumsq, int16_t *sum,
-                           const int w, const int h,
-                           const enum LrEdgeFlags edges);
-void dav1d_sgr_calc_ab1_avx2(int32_t *a, int16_t *b,
-                             const int w, const int h, const int strength);
-void dav1d_sgr_finish_filter1_avx2(coef *tmp,
-                                   const pixel *src, const ptrdiff_t stride,
-                                   const int32_t *a, const int16_t *b,
-                                   const int w, const int h);
-
-// filter with a 3x3 box (radius=1)
-static void dav1d_sgr_filter1_avx2(coef *tmp,
-                                   const pixel *src, const ptrdiff_t stride,
-                                   const pixel (*left)[4],
-                                   const pixel *lpf, const ptrdiff_t lpf_stride,
-                                   const int w, const int h, const int strength,
-                                   const enum LrEdgeFlags edges)
-{
-    ALIGN_STK_32(int32_t, sumsq_mem, (384 + 16) * 68 + 8,);
-    int32_t *const sumsq = &sumsq_mem[(384 + 16) * 2 + 8], *const a = sumsq;
-    ALIGN_STK_32(int16_t, sum_mem, (384 + 16) * 68 + 16,);
-    int16_t *const sum = &sum_mem[(384 + 16) * 2 + 16], *const b = sum;
-
-    dav1d_sgr_box3_h_avx2(sumsq, sum, left, src, stride, w, h, edges);
-    if (edges & LR_HAVE_TOP)
-        dav1d_sgr_box3_h_avx2(&sumsq[-2 * (384 + 16)], &sum[-2 * (384 + 16)],
-                              NULL, lpf, lpf_stride, w, 2, edges);
-
-    if (edges & LR_HAVE_BOTTOM)
-        dav1d_sgr_box3_h_avx2(&sumsq[h * (384 + 16)], &sum[h * (384 + 16)],
-                              NULL, lpf + 6 * PXSTRIDE(lpf_stride),
-                              lpf_stride, w, 2, edges);
-
-    dav1d_sgr_box3_v_avx2(sumsq, sum, w, h, edges);
-    dav1d_sgr_calc_ab1_avx2(a, b, w, h, strength);
-    dav1d_sgr_finish_filter1_avx2(tmp, src, stride, a, b, w, h);
+#define SGR_FILTER(ext) \
+\
+void dav1d_sgr_box3_h_##ext(int32_t *sumsq, int16_t *sum, \
+                            const pixel (*left)[4], \
+                            const pixel *src, const ptrdiff_t stride, \
+                            const int w, const int h, \
+                            const enum LrEdgeFlags edges); \
+void dav1d_sgr_box3_v_##ext(int32_t *sumsq, int16_t *sum, \
+                            const int w, const int h, \
+                            const enum LrEdgeFlags edges); \
+void dav1d_sgr_calc_ab1_##ext(int32_t *a, int16_t *b, \
+                              const int w, const int h, const int strength); \
+void dav1d_sgr_finish_filter1_##ext(coef *tmp, \
+                                    const pixel *src, const ptrdiff_t stride, \
+                                    const int32_t *a, const int16_t *b, \
+                                    const int w, const int h); \
+\
+/* filter with a 3x3 box (radius=1) */ \
+static void dav1d_sgr_filter1_##ext(coef *tmp, \
+                                    const pixel *src, const ptrdiff_t stride, \
+                                    const pixel (*left)[4], \
+                                    const pixel *lpf, const ptrdiff_t lpf_stride, \
+                                    const int w, const int h, const int strength, \
+                                    const enum LrEdgeFlags edges) \
+{ \
+    ALIGN_STK_32(int32_t, sumsq_mem, (384 + 16) * 68 + 8,); \
+    int32_t *const sumsq = &sumsq_mem[(384 + 16) * 2 + 8], *const a = sumsq; \
+    ALIGN_STK_32(int16_t, sum_mem, (384 + 16) * 68 + 16,); \
+    int16_t *const sum = &sum_mem[(384 + 16) * 2 + 16], *const b = sum; \
+\
+    dav1d_sgr_box3_h_##ext(sumsq, sum, left, src, stride, w, h, edges); \
+    if (edges & LR_HAVE_TOP) \
+        dav1d_sgr_box3_h_##ext(&sumsq[-2 * (384 + 16)], &sum[-2 * (384 + 16)], \
+                              NULL, lpf, lpf_stride, w, 2, edges); \
+\
+    if (edges & LR_HAVE_BOTTOM) \
+        dav1d_sgr_box3_h_##ext(&sumsq[h * (384 + 16)], &sum[h * (384 + 16)], \
+                              NULL, lpf + 6 * PXSTRIDE(lpf_stride), \
+                              lpf_stride, w, 2, edges); \
+\
+    dav1d_sgr_box3_v_##ext(sumsq, sum, w, h, edges); \
+    dav1d_sgr_calc_ab1_##ext(a, b, w, h, strength); \
+    dav1d_sgr_finish_filter1_##ext(tmp, src, stride, a, b, w, h); \
+} \
+\
+void dav1d_sgr_box5_h_##ext(int32_t *sumsq, int16_t *sum, \
+                            const pixel (*left)[4], \
+                            const pixel *src, const ptrdiff_t stride, \
+                            const int w, const int h, \
+                            const enum LrEdgeFlags edges); \
+void dav1d_sgr_box5_v_##ext(int32_t *sumsq, int16_t *sum, \
+                            const int w, const int h, \
+                            const enum LrEdgeFlags edges); \
+void dav1d_sgr_calc_ab2_##ext(int32_t *a, int16_t *b, \
+                              const int w, const int h, const int strength); \
+void dav1d_sgr_finish_filter2_##ext(coef *tmp, \
+                                    const pixel *src, const ptrdiff_t stride, \
+                                    const int32_t *a, const int16_t *b, \
+                                    const int w, const int h); \
+\
+/* filter with a 5x5 box (radius=2) */ \
+static void dav1d_sgr_filter2_##ext(coef *tmp, \
+                                    const pixel *src, const ptrdiff_t stride, \
+                                    const pixel (*left)[4], \
+                                    const pixel *lpf, const ptrdiff_t lpf_stride, \
+                                    const int w, const int h, const int strength, \
+                                    const enum LrEdgeFlags edges) \
+{ \
+    ALIGN_STK_32(int32_t, sumsq_mem, (384 + 16) * 68 + 8,); \
+    int32_t *const sumsq = &sumsq_mem[(384 + 16) * 2 + 8], *const a = sumsq; \
+    ALIGN_STK_32(int16_t, sum_mem, (384 + 16) * 68 + 16,); \
+    int16_t *const sum = &sum_mem[(384 + 16) * 2 + 16], *const b = sum; \
+\
+    dav1d_sgr_box5_h_##ext(sumsq, sum, left, src, stride, w, h, edges); \
+    if (edges & LR_HAVE_TOP) \
+        dav1d_sgr_box5_h_##ext(&sumsq[-2 * (384 + 16)], &sum[-2 * (384 + 16)], \
+                              NULL, lpf, lpf_stride, w, 2, edges); \
+\
+    if (edges & LR_HAVE_BOTTOM) \
+        dav1d_sgr_box5_h_##ext(&sumsq[h * (384 + 16)], &sum[h * (384 + 16)], \
+                              NULL, lpf + 6 * PXSTRIDE(lpf_stride), \
+                              lpf_stride, w, 2, edges); \
+\
+    dav1d_sgr_box5_v_##ext(sumsq, sum, w, h, edges); \
+    dav1d_sgr_calc_ab2_##ext(a, b, w, h, strength); \
+    dav1d_sgr_finish_filter2_##ext(tmp, src, stride, a, b, w, h); \
+} \
+\
+void dav1d_sgr_weighted1_##ext(pixel *dst, const ptrdiff_t stride, \
+                               const coef *t1, const int w, const int h, \
+                               const int wt); \
+void dav1d_sgr_weighted2_##ext(pixel *dst, const ptrdiff_t stride, \
+                               const coef *t1, const coef *t2, \
+                               const int w, const int h, \
+                               const int16_t wt[2]); \
+\
+static void sgr_filter_##ext(pixel *const dst, const ptrdiff_t dst_stride, \
+                             const pixel (*const left)[4], \
+                             const pixel *lpf, const ptrdiff_t lpf_stride, \
+                             const int w, const int h, const int sgr_idx, \
+                             const int16_t sgr_wt[7], const enum LrEdgeFlags edges) \
+{ \
+    if (!dav1d_sgr_params[sgr_idx][0]) { \
+        ALIGN_STK_32(coef, tmp, 64 * 384,); \
+        dav1d_sgr_filter1_##ext(tmp, dst, dst_stride, left, lpf, lpf_stride, \
+                               w, h, dav1d_sgr_params[sgr_idx][3], edges); \
+        dav1d_sgr_weighted1_##ext(dst, dst_stride, tmp, w, h, (1 << 7) - sgr_wt[1]); \
+    } else if (!dav1d_sgr_params[sgr_idx][1]) { \
+        ALIGN_STK_32(coef, tmp, 64 * 384,); \
+        dav1d_sgr_filter2_##ext(tmp, dst, dst_stride, left, lpf, lpf_stride, \
+                               w, h, dav1d_sgr_params[sgr_idx][2], edges); \
+        dav1d_sgr_weighted1_##ext(dst, dst_stride, tmp, w, h, sgr_wt[0]); \
+    } else { \
+        ALIGN_STK_32(coef, tmp1, 64 * 384,); \
+        ALIGN_STK_32(coef, tmp2, 64 * 384,); \
+        dav1d_sgr_filter2_##ext(tmp1, dst, dst_stride, left, lpf, lpf_stride, \
+                               w, h, dav1d_sgr_params[sgr_idx][2], edges); \
+        dav1d_sgr_filter1_##ext(tmp2, dst, dst_stride, left, lpf, lpf_stride, \
+                               w, h, dav1d_sgr_params[sgr_idx][3], edges); \
+        const int16_t wt[2] = { sgr_wt[0], 128 - sgr_wt[0] - sgr_wt[1] }; \
+        dav1d_sgr_weighted2_##ext(dst, dst_stride, tmp1, tmp2, w, h, wt); \
+    } \
 }
 
-void dav1d_sgr_box5_h_avx2(int32_t *sumsq, int16_t *sum,
-                           const pixel (*left)[4],
-                           const pixel *src, const ptrdiff_t stride,
-                           const int w, const int h,
-                           const enum LrEdgeFlags edges);
-void dav1d_sgr_box5_v_avx2(int32_t *sumsq, int16_t *sum,
-                           const int w, const int h,
-                           const enum LrEdgeFlags edges);
-void dav1d_sgr_calc_ab2_avx2(int32_t *a, int16_t *b,
-                             const int w, const int h, const int strength);
-void dav1d_sgr_finish_filter2_avx2(coef *tmp,
-                                   const pixel *src, const ptrdiff_t stride,
-                                   const int32_t *a, const int16_t *b,
-                                   const int w, const int h);
+#define DEF_LR_FILTERS(ext) \
+WIENER_FILTER(ext) \
+SGR_FILTER(ext)
 
-// filter with a 5x5 box (radius=2)
-static void dav1d_sgr_filter2_avx2(coef *tmp,
-                                   const pixel *src, const ptrdiff_t stride,
-                                   const pixel (*left)[4],
-                                   const pixel *lpf, const ptrdiff_t lpf_stride,
-                                   const int w, const int h, const int strength,
-                                   const enum LrEdgeFlags edges)
-{
-    ALIGN_STK_32(int32_t, sumsq_mem, (384 + 16) * 68 + 8,);
-    int32_t *const sumsq = &sumsq_mem[(384 + 16) * 2 + 8], *const a = sumsq;
-    ALIGN_STK_32(int16_t, sum_mem, (384 + 16) * 68 + 16,);
-    int16_t *const sum = &sum_mem[(384 + 16) * 2 + 16], *const b = sum;
-
-    dav1d_sgr_box5_h_avx2(sumsq, sum, left, src, stride, w, h, edges);
-    if (edges & LR_HAVE_TOP)
-        dav1d_sgr_box5_h_avx2(&sumsq[-2 * (384 + 16)], &sum[-2 * (384 + 16)],
-                              NULL, lpf, lpf_stride, w, 2, edges);
-
-    if (edges & LR_HAVE_BOTTOM)
-        dav1d_sgr_box5_h_avx2(&sumsq[h * (384 + 16)], &sum[h * (384 + 16)],
-                              NULL, lpf + 6 * PXSTRIDE(lpf_stride),
-                              lpf_stride, w, 2, edges);
-
-    dav1d_sgr_box5_v_avx2(sumsq, sum, w, h, edges);
-    dav1d_sgr_calc_ab2_avx2(a, b, w, h, strength);
-    dav1d_sgr_finish_filter2_avx2(tmp, src, stride, a, b, w, h);
-}
-
-void dav1d_sgr_weighted1_avx2(pixel *dst, const ptrdiff_t stride,
-                              const coef *t1, const int w, const int h,
-                              const int wt);
-void dav1d_sgr_weighted2_avx2(pixel *dst, const ptrdiff_t stride,
-                              const coef *t1, const coef *t2,
-                              const int w, const int h,
-                              const int16_t wt[2]);
-
-static void sgr_filter_avx2(pixel *const dst, const ptrdiff_t dst_stride,
-                            const pixel (*const left)[4],
-                            const pixel *lpf, const ptrdiff_t lpf_stride,
-                            const int w, const int h, const int sgr_idx,
-                            const int16_t sgr_wt[7], const enum LrEdgeFlags edges)
-{
-    if (!dav1d_sgr_params[sgr_idx][0]) {
-        ALIGN_STK_32(coef, tmp, 64 * 384,);
-        dav1d_sgr_filter1_avx2(tmp, dst, dst_stride, left, lpf, lpf_stride,
-                               w, h, dav1d_sgr_params[sgr_idx][3], edges);
-        dav1d_sgr_weighted1_avx2(dst, dst_stride, tmp, w, h, (1 << 7) - sgr_wt[1]);
-    } else if (!dav1d_sgr_params[sgr_idx][1]) {
-        ALIGN_STK_32(coef, tmp, 64 * 384,);
-        dav1d_sgr_filter2_avx2(tmp, dst, dst_stride, left, lpf, lpf_stride,
-                               w, h, dav1d_sgr_params[sgr_idx][2], edges);
-        dav1d_sgr_weighted1_avx2(dst, dst_stride, tmp, w, h, sgr_wt[0]);
-    } else {
-        ALIGN_STK_32(coef, tmp1, 64 * 384,);
-        ALIGN_STK_32(coef, tmp2, 64 * 384,);
-        dav1d_sgr_filter2_avx2(tmp1, dst, dst_stride, left, lpf, lpf_stride,
-                               w, h, dav1d_sgr_params[sgr_idx][2], edges);
-        dav1d_sgr_filter1_avx2(tmp2, dst, dst_stride, left, lpf, lpf_stride,
-                               w, h, dav1d_sgr_params[sgr_idx][3], edges);
-        const int16_t wt[2] = { sgr_wt[0], 128 - sgr_wt[0] - sgr_wt[1] };
-        dav1d_sgr_weighted2_avx2(dst, dst_stride, tmp1, tmp2, w, h, wt);
-    }
-}
+#if BITDEPTH == 8
+DEF_LR_FILTERS(ssse3)
+# if ARCH_X86_64
+DEF_LR_FILTERS(avx2)
+# endif
 #endif
 
 void bitfn(dav1d_loop_restoration_dsp_init_x86)(Dav1dLoopRestorationDSPContext *const c) {
     const unsigned flags = dav1d_get_cpu_flags();
 
-    if (!(flags & DAV1D_X86_CPU_FLAG_AVX2)) return;
+    if (!(flags & DAV1D_X86_CPU_FLAG_SSSE3)) return;
+#if BITDEPTH == 8
+    c->wiener = wiener_filter_ssse3;
+    c->selfguided = sgr_filter_ssse3;
+#endif
 
+    if (!(flags & DAV1D_X86_CPU_FLAG_AVX2)) return;
 #if BITDEPTH == 8 && ARCH_X86_64
     c->wiener = wiener_filter_avx2;
     c->selfguided = sgr_filter_avx2;
--- /dev/null
+++ b/src/x86/looprestoration_ssse3.asm
@@ -1,0 +1,1804 @@
+; Copyright © 2018, VideoLAN and dav1d authors
+; Copyright © 2018, Two Orioles, LLC
+; Copyright © 2018, VideoLabs
+; All rights reserved.
+;
+; Redistribution and use in source and binary forms, with or without
+; modification, are permitted provided that the following conditions are met:
+;
+; 1. Redistributions of source code must retain the above copyright notice, this
+;    list of conditions and the following disclaimer.
+;
+; 2. Redistributions in binary form must reproduce the above copyright notice,
+;    this list of conditions and the following disclaimer in the documentation
+;    and/or other materials provided with the distribution.
+;
+; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+; ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+%include "config.asm"
+%include "ext/x86/x86inc.asm"
+
+SECTION_RODATA 16
+
+pb_right_ext_mask: times 16 db 0xff
+                   times 16 db 0
+pb_14x0_1_2: times 14 db 0
+             db 1, 2
+pb_0_to_15_min_n: db 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 13, 13
+                  db 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 14
+pb_0: times 16 db 0
+pb_2: times 16 db 2
+pb_3: times 16 db 3
+pb_4: times 16 db 4
+pb_15: times 16 db 15
+pb_0_1: times 8 db 0, 1
+pb_6_7: times 8 db 6, 7
+pb_14_15: times 8 db 14, 15
+pb_0_1_2_3: times 4 db 0, 1, 2, 3
+pb_4_5_6_7: times 4 db 4, 5, 6, 7
+pw_1: times 8 dw 1
+pw_16: times 8 dw 16
+pw_128: times 8 dw 128
+pw_255: times 8 dw 255
+pw_256: times 8 dw 256
+pw_2048: times 8 dw 2048
+pw_16380: times 8 dw 16380
+pw_5_6: times 4 dw 5, 6
+pw_0_128: times 4 dw 0, 128
+pd_1024: times 4 dd 1024
+%if ARCH_X86_32
+pd_256: times 4 dd 256
+pd_512: times 4 dd 512
+pd_2048: times 4 dd 2048
+%endif
+pd_0xF0080029: times 4 dd 0xF0080029
+pd_0xF00801C7: times 4 dd 0XF00801C7
+
+cextern sgr_x_by_x
+
+SECTION .text
+
+%if ARCH_X86_32
+ %define PIC_base_offset $$
+
+ %macro SETUP_PIC 1-3 1,0 ; PIC_reg, save_PIC_reg, restore_PIC_reg
+  %assign pic_reg_stk_off 4
+  %xdefine PIC_reg %1
+  %if %2 == 1
+    mov        [esp], %1
+  %endif
+    LEA      PIC_reg, PIC_base_offset
+  %if %3 == 1
+    XCHG_PIC_REG
+  %endif
+ %endmacro
+
+ %macro XCHG_PIC_REG 0
+    mov [esp+pic_reg_stk_off], PIC_reg
+    %assign pic_reg_stk_off (pic_reg_stk_off+4) % 8
+    mov PIC_reg, [esp+pic_reg_stk_off]
+ %endmacro
+
+ %define PIC_sym(sym)   (PIC_reg+(sym)-PIC_base_offset)
+
+%else
+ %macro XCHG_PIC_REG 0
+ %endmacro
+
+ %define PIC_sym(sym)   (sym)
+%endif
+
+;;;;;;;;;;;;;;;;;;;;;;
+;;      wiener      ;;
+;;;;;;;;;;;;;;;;;;;;;;
+
+INIT_XMM ssse3
+%if ARCH_X86_64
+cglobal wiener_filter_h, 8, 15, 16, dst, left, src, stride, fh, w, h, edge
+    movq         m15, [fhq]
+    pshufb       m12, m15, [pb_6_7]
+    pshufb       m13, m15, [pb_4]
+    pshufb       m14, m15, [pb_2]
+    pshufb       m15, m15, [pb_0]
+    mova         m11, [pw_2048]
+    mova         m10, [pw_16380]
+    lea          r11, [pb_right_ext_mask]
+
+    DEFINE_ARGS dst, left, src, stride, x, w, h, edge, srcptr, dstptr, xlim
+%else
+cglobal wiener_filter_h, 8, 8, 8, 92, dst, left, src, stride, fh, w, h, edge
+    SETUP_PIC hd
+    movq          m0, [fhq]
+    pshufb        m3, m0, [PIC_sym(pb_6_7)]
+    pshufb        m2, m0, [PIC_sym(pb_4)]
+    pshufb        m1, m0, [PIC_sym(pb_2)]
+    pshufb        m0, m0, [PIC_sym(pb_0)]
+
+    DEFINE_ARGS dst, left, src, stride, x, w, h, edge
+ %define xlimm   r0m
+ %define xlimmp  r0mp
+
+ %define srcptrq    srcq
+ %define dstptrq    dstq
+ %define hd         dword [esp]
+ %define edged      edgemp
+
+ %define m10    [PIC_sym(pw_16380)]
+ %define m11    [PIC_sym(pw_2048)]
+ %define m12    [esp+0Ch]
+ %define m13    [esp+1Ch]
+ %define m14    [esp+2Ch]
+ %define m15    [esp+3Ch]
+
+    mova         m15, m0
+    mova         m14, m1
+    mova         m13, m2
+    mova         m12, m3
+%endif
+
+    ; if (edge & has_right) align_w_to_16
+    ; else w -= 3, and use that as limit in x loop
+    test       edged, 2 ; has_right
+    jnz .align
+%if ARCH_X86_64
+    mov        xlimq, -3
+%else
+    mov       xlimmp, -3
+%endif
+    jmp .loop
+.align:
+    add           wd, 15
+    and           wd, ~15
+%if ARCH_X86_64
+    xor        xlimd, xlimd
+%else
+    mov       xlimmp, 0
+%endif
+
+    ; main y loop for vertical filter
+.loop:
+%if ARCH_X86_64
+    mov      srcptrq, srcq
+    mov      dstptrq, dstq
+    lea           xd, [wd+xlimd]
+%else
+    mov      [esp+8], srcq
+    mov      [esp+4], dstq
+    mov           xd, wd
+    add           xd, xlimm
+%endif
+
+    ; load left edge pixels
+    test       edged, 1 ; have_left
+    jz .emu_left
+    test       leftq, leftq ; left == NULL for the edge-extended bottom/top
+    jz .load_left_combined
+    movd          m0, [leftq]
+    movd          m1, [srcq]
+    punpckldq     m0, m1
+    pslldq        m0, 9
+    add        leftq, 4
+    jmp .left_load_done
+.load_left_combined:
+    movq          m0, [srcq-3]
+    pslldq        m0, 10
+    jmp .left_load_done
+.emu_left:
+    movd          m0, [srcq]
+    pshufb        m0, [PIC_sym(pb_14x0_1_2)]
+
+    ; load right edge pixels
+.left_load_done:
+    cmp           xd, 16
+    jg .main_load
+    test          xd, xd
+    jg .load_and_splat
+    je .splat_right
+
+    ; for very small images (w=[1-2]), edge-extend the original cache,
+    ; ugly, but only runs in very odd cases
+    add           wd, wd
+%if ARCH_X86_64
+    pshufb        m0, [r11-pb_right_ext_mask+pb_0_to_15_min_n+wq*8-16]
+%else
+    pshufb        m0, [PIC_sym(pb_0_to_15_min_n)+wq*8-16]
+%endif
+    shr           wd, 1
+
+    ; main x loop, mostly this starts in .main_load
+.splat_right:
+    ; no need to load new pixels, just extend them from the (possibly previously
+    ; extended) previous load into m0
+    pshufb        m1, m0, [PIC_sym(pb_15)]
+    jmp .main_loop
+.load_and_splat:
+    ; load new pixels and extend edge for right-most
+    movu          m1, [srcptrq+3]
+%if ARCH_X86_64
+    sub          r11, xq
+    movu          m2, [r11+16]
+    add          r11, xq
+%else
+    sub      PIC_reg, xd
+    movu          m2, [PIC_sym(pb_right_ext_mask)+16]
+    add      PIC_reg, xd
+%endif
+    movd          m3, [srcptrq+2+xq]
+    pshufb        m3, [PIC_sym(pb_0)]
+    pand          m1, m2
+    pxor          m2, [PIC_sym(pb_right_ext_mask)]
+    pand          m3, m2
+    pxor          m2, [PIC_sym(pb_right_ext_mask)]
+    por           m1, m3
+    jmp .main_loop
+.main_load:
+    ; load subsequent line
+    movu          m1, [srcptrq+3]
+.main_loop:
+    palignr       m2, m1, m0, 10
+    palignr       m3, m1, m0, 11
+    palignr       m4, m1, m0, 12
+    palignr       m5, m1, m0, 13
+    palignr       m6, m1, m0, 14
+    palignr       m7, m1, m0, 15
+
+%if ARCH_X86_32
+    mova   [esp+4Ch], m1
+ %define m8  m1
+%endif
+    punpcklbw     m0, m2, m1
+    punpckhbw     m2, m1
+    punpcklbw     m8, m3, m7
+    punpckhbw     m3, m7
+    punpcklbw     m7, m4, m6
+    punpckhbw     m4, m6
+    pmaddubsw     m0, m15
+    pmaddubsw     m2, m15
+    pmaddubsw     m8, m14
+    pmaddubsw     m3, m14
+    pmaddubsw     m7, m13
+    pmaddubsw     m4, m13
+    paddw         m0, m8
+    paddw         m2, m3
+    pxor          m3, m3
+    punpcklbw     m6, m5, m3
+    punpckhbw     m5, m3
+    psllw         m8, m6, 7
+    psllw         m3, m5, 7
+    psubw         m8, m10
+    psubw         m3, m10
+    pmullw        m6, m12
+    pmullw        m5, m12
+    paddw         m0, m7
+    paddw         m2, m4
+    paddw         m0, m6
+    paddw         m2, m5
+    paddsw        m0, m8
+    paddsw        m2, m3
+    psraw         m0, 3
+    psraw         m2, 3
+    paddw         m0, m11
+    paddw         m2, m11
+    mova [dstptrq+ 0], m0
+    mova [dstptrq+16], m2
+
+%if ARCH_X86_64
+    mova          m0, m1
+%else
+    mova          m0, [esp+4Ch]
+%endif
+    add      srcptrq, 16
+    add      dstptrq, 32
+    sub           xd, 16
+    cmp           xd, 16
+    jg .main_load
+    test          xd, xd
+    jg .load_and_splat
+%if ARCH_X86_64
+    cmp           xd, xlimd
+%else
+    cmp           xd, xlimm
+%endif
+    jg .splat_right
+
+%if ARCH_X86_32
+    mov         srcq, [esp+8]
+    mov         dstq, [esp+4]
+%endif
+    add         srcq, strideq
+    add         dstq, 384*2
+    dec           hd
+    jg .loop
+    RET
+
+%if ARCH_X86_64
+cglobal wiener_filter_v, 7, 10, 16, dst, stride, mid, w, h, fv, edge
+    movq         m15, [fvq]
+    pshufb       m14, m15, [pb_4_5_6_7]
+    pshufb       m15, m15, [pb_0_1_2_3]
+    paddw        m14, [pw_0_128]
+    movd         m12, [pd_1024]
+    pshufd       m12, m12, 0
+
+    DEFINE_ARGS dst, stride, mid, w, h, y, edge, ylim, mptr, dstptr
+
+    mov        ylimd, edged
+    and        ylimd, 8 ; have_bottom
+    shr        ylimd, 2
+    sub        ylimd, 3
+%else
+cglobal wiener_filter_v, 7, 7, 8, 92, dst, stride, mid, w, h, fv, edge
+ %define ylimm  r0m
+ %define ylimmp r0mp
+
+    mov        ylimm, edged
+    and       ylimmp, 8 ; have_bottom
+    shr       ylimmp, 2
+    sub       ylimmp, 3
+
+    SETUP_PIC edged
+
+    movq          m0, [fvq]
+    pshufb        m1, m0, [PIC_sym(pb_4_5_6_7)]
+    pshufb        m0, m0, [PIC_sym(pb_0_1_2_3)]
+    paddw         m1, [PIC_sym(pw_0_128)]
+    mova   [esp+4Ch], m0
+    mova   [esp+3Ch], m1
+
+    DEFINE_ARGS dst, stride, mid, w, h, y, edge
+ %define mptrq      midq
+ %define dstptrq    dstq
+ %define edged      dword [esp]
+%endif
+
+    ; main x loop for vertical filter, does one column of 16 pixels
+.loop_x:
+    mova          m3, [midq] ; middle line
+
+    ; load top pixels
+    test       edged, 4 ; have_top
+    jz .emu_top
+    mova          m0, [midq-384*4]
+    mova          m2, [midq-384*2]
+    mova          m1, m0
+    jmp .load_bottom_pixels
+.emu_top:
+    mova          m0, m3
+    mova          m1, m3
+    mova          m2, m3
+
+    ; load bottom pixels
+.load_bottom_pixels:
+    mov           yd, hd
+%if ARCH_X86_64
+    mov        mptrq, midq
+    mov      dstptrq, dstq
+    add           yd, ylimd
+%else
+    mov      [esp+8], midq
+    mov      [esp+4], dstq
+    add           yd, ylimm
+%endif
+    jg .load_threelines
+
+    ; the remainder here is somewhat messy but only runs in very weird
+    ; circumstances at the bottom of the image in very small blocks (h=[1-3]),
+    ; so performance is not terribly important here...
+    je .load_twolines
+    cmp           yd, -1
+    je .load_oneline
+    ; h == 1 case
+    mova          m5, m3
+    mova          m4, m3
+    mova          m6, m3
+    jmp .loop
+.load_oneline:
+    ; h == 2 case
+    mova          m4, [midq+384*2]
+    mova          m5, m4
+    mova          m6, m4
+    jmp .loop
+.load_twolines:
+    ; h == 3 case
+    mova          m4, [midq+384*2]
+    mova          m5, [midq+384*4]
+    mova          m6, m5
+    jmp .loop
+.load_threelines:
+    ; h > 3 case
+    mova          m4, [midq+384*2]
+    mova          m5, [midq+384*4]
+    ; third line loaded in main loop below
+
+    ; main y loop for vertical filter
+.loop_load:
+    ; load one line into m6. if that pixel is no longer available, do
+    ; nothing, since m6 still has the data from the previous line in it. We
+    ; try to structure the loop so that the common case is evaluated fastest
+    mova          m6, [mptrq+384*6]
+.loop:
+%if ARCH_X86_64
+    paddw         m7, m0, m6
+    paddw         m8, m1, m5
+    paddw         m9, m2, m4
+    punpcklwd    m10, m7, m8
+    punpckhwd     m7, m8
+    punpcklwd    m11, m9, m3
+    punpckhwd     m9, m3
+    pmaddwd      m10, m15
+    pmaddwd       m7, m15
+    pmaddwd      m11, m14
+    pmaddwd       m9, m14
+    paddd        m10, m11
+    paddd         m7, m9
+    paddd        m10, m12
+    paddd         m7, m12
+    psrad        m10, 11
+    psrad         m7, 11
+    packssdw     m10, m7
+    packuswb     m10, m10
+    movq   [dstptrq], m10
+%else
+    mova   [esp+2Ch], m1
+    mova   [esp+1Ch], m2
+    mova   [esp+0Ch], m3
+    paddw         m0, m6
+    paddw         m1, m5
+    paddw         m2, m4
+    punpcklwd     m7, m2, m3
+    punpckhwd     m2, m3
+    punpcklwd     m3, m0, m1
+    punpckhwd     m0, m1
+    pmaddwd       m3, [esp+4Ch]
+    pmaddwd       m0, [esp+4Ch]
+    pmaddwd       m7, [esp+3Ch]
+    pmaddwd       m2, [esp+3Ch]
+    paddd         m3, m7
+    paddd         m0, m2
+    paddd         m3, [PIC_sym(pd_1024)]
+    paddd         m0, [PIC_sym(pd_1024)]
+    psrad         m3, 11
+    psrad         m0, 11
+    packssdw      m3, m0
+    packuswb      m3, m3
+    movq      [dstq], m3
+    mova          m1, [esp+2Ch]
+    mova          m2, [esp+1Ch]
+    mova          m3, [esp+0Ch]
+%endif
+    ; shift pixels one position
+    mova          m0, m1
+    mova          m1, m2
+    mova          m2, m3
+    mova          m3, m4
+    mova          m4, m5
+    mova          m5, m6
+    add      dstptrq, strideq
+    add        mptrq, 384*2
+    dec           yd
+    jg .loop_load
+    ; for the bottom pixels, continue using m6 (as extended edge)
+%if ARCH_X86_64
+    cmp           yd, ylimd
+%else
+    cmp           yd, ylimm
+%endif
+    jg .loop
+
+%if ARCH_X86_32
+    mov         midq, [esp+8]
+    mov         dstq, [esp+4]
+%endif
+    add         dstq, 8
+    add         midq, 16
+    sub           wd, 8
+    jg .loop_x
+    RET
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;      self-guided     ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+%macro MULLD 2-3 1 ; %3 = is_constant
+    pmuludq       m5, %1, %2
+    psrlq         %1, 32
+ %if %3 == 0
+    pshufd        m3, %2, q2301
+    pmuludq       %1, m3
+ %else
+    pmuludq       %1, %2
+ %endif
+    shufps        %1, m5, q2020
+    pshufd        %1, %1, q1302
+%endmacro
+
+%macro GATHERDD 2
+    mova          m5, m7
+    movd         r6d, %2
+ %if ARCH_X86_64
+    movd          %1, [r5+r6]
+    pextrw       r6d, %2, 2
+    pinsrw        m5, [r5+r6+2], 3
+    pextrw       r6d, %2, 4
+    pinsrw        %1, [r5+r6+2], 5
+    pextrw       r6d, %2, 6
+    pinsrw        m5, [r5+r6+2], 7
+ %else
+    movd          %1, [PIC_sym(sgr_x_by_x-0xF03)+r6]
+    pextrw       r6d, %2, 2
+    pinsrw        m5, [PIC_sym(sgr_x_by_x-0xF03)+r6+2], 3
+    pextrw       r6d, %2, 4
+    pinsrw        %1, [PIC_sym(sgr_x_by_x-0xF03)+r6+2], 5
+    pextrw       r6d, %2, 6
+    pinsrw        m5, [PIC_sym(sgr_x_by_x-0xF03)+r6+2], 7
+ %endif
+    por           %1, m5
+%endmacro
+
+%if ARCH_X86_64
+cglobal sgr_box3_h, 8, 11, 8, sumsq, sum, left, src, stride, x, h, edge, w, xlim
+    mov        xlimd, edged
+    and        xlimd, 2                             ; have_right
+    add           xd, xlimd
+    xor        xlimd, 2                             ; 2*!have_right
+%else
+cglobal sgr_box3_h, 8, 8, 8, 4, sumsq, sum, left, src, stride, x, h, edge, w, xlim
+ %define wm     r0m
+ %define xlimm  r1m
+
+    SETUP_PIC hd
+    PUSH          r0
+    mov           r0, edgem
+    and           r0, 2                             ; have_right
+    add           xd, r0
+    xor           r0, 2                             ; 2*!have_right
+    mov        xlimm, r0
+    POP           r0
+
+ %define hd     dword [esp]
+ %define edged  edgemp
+ %define xlimq  xlimm
+%endif
+
+    jnz .no_right
+    add           xd, 7
+    and           xd, ~7
+.no_right:
+    pxor          m1, m1
+    lea         srcq, [srcq+xq]
+    lea         sumq, [sumq+xq*2-2]
+    lea       sumsqq, [sumsqq+xq*4-4]
+    neg           xq
+%if ARCH_X86_64
+    mov           wq, xq
+    lea          r10, [pb_right_ext_mask+16]
+.loop_y:
+    mov           xq, wq
+%else
+    mov           wm, xd
+.loop_y:
+    mov           xd, wm
+%endif
+
+    ; load left
+    test       edged, 1                             ; have_left
+    jz .no_left
+    test       leftq, leftq
+    jz .load_left_from_main
+    movd          m0, [leftq]
+    pslldq        m0, 12
+    add        leftq, 4
+    jmp .expand_x
+.no_left:
+    movd          m0, [srcq+xq]
+    pshufb        m0, [PIC_sym(pb_0)]
+    jmp .expand_x
+.load_left_from_main:
+    movd          m0, [srcq+xq-2]
+    pslldq        m0, 14
+.expand_x:
+    punpckhbw    xm0, xm1
+
+    ; when we reach this, m0 contains left two px in highest words
+    cmp           xq, -8
+    jle .loop_x
+.partial_load_and_extend:
+    movd          m3, [srcq-4]
+    pshufb        m3, [PIC_sym(pb_3)]
+    movq          m2, [srcq+xq]
+    punpcklbw     m2, m1
+    punpcklbw     m3, m1
+%if ARCH_X86_64
+    movu          m4, [r10+xq*2]
+%else
+    movu          m4, [PIC_sym(pb_right_ext_mask+16)+xd*2]
+%endif
+    pand          m2, m4
+    pandn         m4, m3
+    por           m2, m4
+    jmp .loop_x_noload
+.right_extend:
+    pshufb        m2, m0, [PIC_sym(pb_14_15)]
+    jmp .loop_x_noload
+
+.loop_x:
+    movq          m2, [srcq+xq]
+    punpcklbw     m2, m1
+.loop_x_noload:
+    palignr       m3, m2, m0, 12
+    palignr       m4, m2, m0, 14
+
+    punpcklwd     m5, m3, m2
+    punpckhwd     m6, m3, m2
+    paddw         m3, m4
+    punpcklwd     m7, m4, m1
+    punpckhwd     m4, m1
+    pmaddwd       m5, m5
+    pmaddwd       m6, m6
+    pmaddwd       m7, m7
+    pmaddwd       m4, m4
+    paddd         m5, m7
+    paddd         m6, m4
+    paddw         m3, m2
+    movu [sumq+xq*2], m3
+    movu [sumsqq+xq*4+ 0], m5
+    movu [sumsqq+xq*4+16], m6
+
+    mova          m0, m2
+    add           xq, 8
+
+    ; if x <= -8 we can reload more pixels
+    ; else if x < 0 we reload and extend (this implies have_right=0)
+    ; else if x < xlimd we extend from previous load (this implies have_right=0)
+    ; else we are done
+
+    cmp           xq, -8
+    jle .loop_x
+    test          xq, xq
+    jl .partial_load_and_extend
+    cmp           xq, xlimq
+    jl .right_extend
+
+    add       sumsqq, (384+16)*4
+    add         sumq, (384+16)*2
+    add         srcq, strideq
+    dec           hd
+    jg .loop_y
+    RET
+
+%if ARCH_X86_64
+cglobal sgr_box3_v, 5, 10, 9, sumsq, sum, w, h, edge, x, y, sumsq_base, sum_base, ylim
+%else
+cglobal sgr_box3_v, 5, 7, 8, 16, sumsq, sum, w, h, edge, x, y
+ %define sumsq_basem    r0m
+ %define sum_basem      r1m
+ %define ylimm          r4m
+ %define ylimmp         r4mp
+
+ %define m8 [esp]
+%endif
+    mov           xq, -2
+%if ARCH_X86_64
+    mov        ylimd, edged
+    and        ylimd, 8                             ; have_bottom
+    shr        ylimd, 2
+    sub        ylimd, 2                             ; -2 if have_bottom=0, else 0
+    mov  sumsq_baseq, sumsqq
+    mov    sum_baseq, sumq
+.loop_x:
+    mov       sumsqq, sumsq_baseq
+    mov         sumq, sum_baseq
+    lea           yd, [hd+ylimd+2]
+%else
+    and       ylimmp, 8                             ; have_bottom
+    shr       ylimmp, 2
+    sub       ylimmp, 2                             ; -2 if have_bottom=0, else 0
+.loop_x:
+    mov       sumsqd, sumsq_basem
+    mov         sumd, sum_basem
+    lea           yd, [hd+2]
+    add           yd, ylimm
+%endif
+    lea       sumsqq, [sumsqq+xq*4+4-(384+16)*4]
+    lea         sumq, [sumq+xq*2+2-(384+16)*2]
+    test       edged, 4                             ; have_top
+    jnz .load_top
+    movu          m0, [sumsqq+(384+16)*4*1]
+    movu          m1, [sumsqq+(384+16)*4*1+16]
+    mova          m2, m0
+    mova          m3, m1
+    mova          m4, m0
+    mova          m5, m1
+    movu          m6, [sumq+(384+16)*2*1]
+    mova          m7, m6
+    mova          m8, m6
+    jmp .loop_y_noload
+.load_top:
+    movu          m0, [sumsqq-(384+16)*4*1]      ; l2sq [left]
+    movu          m1, [sumsqq-(384+16)*4*1+16]   ; l2sq [right]
+    movu          m2, [sumsqq-(384+16)*4*0]      ; l1sq [left]
+    movu          m3, [sumsqq-(384+16)*4*0+16]   ; l1sq [right]
+    movu          m6, [sumq-(384+16)*2*1]        ; l2
+    movu          m7, [sumq-(384+16)*2*0]        ; l1
+.loop_y:
+%if ARCH_X86_64
+    movu          m8, [sumq+(384+16)*2*1]        ; l0
+%else
+    movu          m4, [sumq+(384+16)*2*1]        ; l0
+    mova       [esp], m4
+%endif
+    movu          m4, [sumsqq+(384+16)*4*1]      ; l0sq [left]
+    movu          m5, [sumsqq+(384+16)*4*1+16]   ; l0sq [right]
+.loop_y_noload:
+    paddd         m0, m2
+    paddd         m1, m3
+    paddw         m6, m7
+    paddd         m0, m4
+    paddd         m1, m5
+    paddw         m6, m8
+    movu [sumsqq+ 0], m0
+    movu [sumsqq+16], m1
+    movu      [sumq], m6
+
+    ; shift position down by one
+    mova          m0, m2
+    mova          m1, m3
+    mova          m2, m4
+    mova          m3, m5
+    mova          m6, m7
+    mova          m7, m8
+    add       sumsqq, (384+16)*4
+    add         sumq, (384+16)*2
+    dec           yd
+    jg .loop_y
+%if ARCH_X86_64
+    cmp           yd, ylimd
+%else
+    cmp           yd, ylimm
+%endif
+    jg .loop_y_noload
+    add           xd, 8
+    cmp           xd, wd
+    jl .loop_x
+    RET
+
+cglobal sgr_calc_ab1, 5, 7, 14, a, b, w, h, s
+    sub           aq, (384+16-1)*4
+    sub           bq, (384+16-1)*2
+    add           hd, 2
+%if ARCH_X86_64
+    LEA           r5, sgr_x_by_x-0xF03
+%else
+    SETUP_PIC r5, 0
+%endif
+    movd          m6, sd
+    pshufd        m6, m6, 0
+    pxor          m7, m7
+    DEFINE_ARGS a, b, w, h, x
+%if ARCH_X86_64
+    mova          m8, [pd_0xF00801C7]
+    mova          m9, [pw_256]
+    psrld        m10, m9, 13                        ; pd_2048
+%else
+ %define m8     [PIC_sym(pd_0xF00801C7)]
+ %define m9     [PIC_sym(pw_256)]
+ %define m10    [PIC_sym(pd_2048)]
+%endif
+.loop_y:
+    mov           xq, -2
+.loop_x:
+    movq          m0, [bq+xq*2]
+    movq          m1, [bq+xq*2+(384+16)*2]
+    punpcklwd     m0, m7
+    punpcklwd     m1, m7
+    movu          m2, [aq+xq*4]
+    movu          m3, [aq+xq*4+(384+16)*4]
+    pslld         m4, m2, 3
+    pslld         m5, m3, 3
+    paddd         m2, m4                            ; aa * 9
+    paddd         m3, m5
+    pmaddwd       m4, m0, m0
+    pmaddwd       m5, m1, m1
+    pmaddwd       m0, m8
+    pmaddwd       m1, m8
+    psubd         m2, m4                            ; p = aa * 9 - bb * bb
+    psubd         m3, m5
+    MULLD         m2, m6
+    MULLD         m3, m6
+    paddusw       m2, m8
+    paddusw       m3, m8
+    psrld         m2, 20                            ; z
+    psrld         m3, 20
+    GATHERDD      m4, m2                            ; xx
+    GATHERDD      m2, m3
+    psrld         m4, 24
+    psrld         m2, 24
+    MULLD         m0, m4, 0
+    MULLD         m1, m2, 0
+    packssdw      m4, m2
+    psubw         m5, m9, m4
+    paddd         m0, m10
+    paddd         m1, m10
+    psrld         m0, 12
+    psrld         m1, 12
+    movq   [bq+xq*2], m5
+    psrldq        m5, 8
+    movq [bq+xq*2+(384+16)*2], m5
+    movu   [aq+xq*4], m0
+    movu [aq+xq*4+(384+16)*4], m1
+    add           xd, 4
+    cmp           xd, wd
+    jl .loop_x
+    add           aq, (384+16)*4*2
+    add           bq, (384+16)*2*2
+    sub           hd, 2
+    jg .loop_y
+    RET
+
+%if ARCH_X86_64
+cglobal sgr_finish_filter1, 7, 13, 16, t, src, stride, a, b, w, h, \
+                                       tmp_base, src_base, a_base, b_base, x, y
+    mova          m15, [pw_16]
+
+    mov    tmp_baseq, tq
+    mov    src_baseq, srcq
+    mov      a_baseq, aq
+    mov      b_baseq, bq
+%else
+cglobal sgr_finish_filter1, 7, 7, 8, 120, t, src, stride, a, b, x, y
+ %define tmp_baseq  r0m
+ %define src_baseq  r1m
+ %define a_baseq    r3m
+ %define b_baseq    r4m
+ %define wd         r5m
+ %define hd         r6m
+
+    SETUP_PIC yd, 1, 1
+%endif
+
+    xor           xd, xd
+.loop_x:
+    mov           tq, tmp_baseq
+    mov         srcq, src_baseq
+    mov           aq, a_baseq
+    mov           bq, b_baseq
+
+%if ARCH_X86_32
+    movu          m0, [bq+xq*2-(384+16)*2-2]
+    movu          m2, [bq+xq*2-(384+16)*2+2]
+    mova          m1, [bq+xq*2-(384+16)*2]          ; b:top
+    paddw         m0, m2                            ; b:tl+tr
+    movu          m2, [bq+xq*2-2]
+    movu          m3, [bq+xq*2+2]
+    paddw         m1, [bq+xq*2]                     ; b:top+ctr
+    paddw         m2, m3                            ; b:l+r
+    mova   [esp+68h], m0
+    mova   [esp+58h], m1
+    mova   [esp+48h], m2
+%endif
+    movu          m0, [aq+xq*4-(384+16)*4-4]
+    movu          m2, [aq+xq*4-(384+16)*4+4]
+    mova          m1, [aq+xq*4-(384+16)*4]          ; a:top [first half]
+    paddd         m0, m2                            ; a:tl+tr [first half]
+    movu          m2, [aq+xq*4-(384+16)*4-4+16]
+    movu          m4, [aq+xq*4-(384+16)*4+4+16]
+    mova          m3, [aq+xq*4-(384+16)*4+16]       ; a:top [second half]
+    paddd         m2, m4                            ; a:tl+tr [second half]
+    movu          m4, [aq+xq*4-4]
+    movu          m5, [aq+xq*4+4]
+    paddd         m1, [aq+xq*4]                     ; a:top+ctr [first half]
+    paddd         m4, m5                            ; a:l+r [first half]
+    movu          m5, [aq+xq*4+16-4]
+    movu          m6, [aq+xq*4+16+4]
+    paddd         m3, [aq+xq*4+16]                  ; a:top+ctr [second half]
+    paddd         m5, m6                            ; a:l+r [second half]
+%if ARCH_X86_64
+    movu          m6, [bq+xq*2-(384+16)*2-2]
+    movu          m8, [bq+xq*2-(384+16)*2+2]
+    mova          m7, [bq+xq*2-(384+16)*2]          ; b:top
+    paddw         m6, m8                            ; b:tl+tr
+    movu          m8, [bq+xq*2-2]
+    movu          m9, [bq+xq*2+2]
+    paddw         m7, [bq+xq*2]                     ; b:top+ctr
+    paddw         m8, m9                            ; b:l+r
+%endif
+
+    lea           tq, [tq+xq*2]
+    lea         srcq, [srcq+xq*1]
+    lea           aq, [aq+xq*4+(384+16)*4]
+    lea           bq, [bq+xq*2+(384+16)*2]
+    mov           yd, hd
+.loop_y:
+%if ARCH_X86_64
+    movu          m9, [bq-2]
+    movu         m10, [bq+2]
+    paddw         m7, [bq]                          ; b:top+ctr+bottom
+    paddw         m9, m10                           ; b:bl+br
+    paddw        m10, m7, m8                        ; b:top+ctr+bottom+l+r
+    paddw         m6, m9                            ; b:tl+tr+bl+br
+    psubw         m7, [bq-(384+16)*2*2]             ; b:ctr+bottom
+    paddw        m10, m6
+    psllw        m10, 2
+    psubw        m10, m6                            ; aa
+    pxor         m14, m14
+    movq         m12, [srcq]
+    punpcklbw    m12, m14
+    punpcklwd     m6, m10, m15
+    punpckhwd    m10, m15
+    punpcklwd    m13, m12, m15
+    punpckhwd    m12, m15
+    pmaddwd       m6, m13                           ; aa*src[x]+256 [first half]
+    pmaddwd      m10, m12                           ; aa*src[x]+256 [second half]
+%else
+    paddd         m1, [aq]                          ; a:top+ctr+bottom [first half]
+    paddd         m3, [aq+16]                       ; a:top+ctr+bottom [second half]
+    mova   [esp+38h], m1
+    mova   [esp+28h], m3
+    mova   [esp+18h], m4
+    movu          m6, [aq-4]
+    movu          m7, [aq+4]
+    paddd         m1, m4                            ; a:top+ctr+bottom+l+r [first half]
+    paddd         m3, m5                            ; a:top+ctr+bottom+l+r [second half]
+    paddd         m6, m7                            ; a:bl+br [first half]
+    movu          m7, [aq+16-4]
+    movu          m4, [aq+16+4]
+    paddd         m7, m4                            ; a:bl+br [second half]
+    paddd         m0, m6                            ; a:tl+tr+bl+br [first half]
+    paddd         m2, m7                            ; a:tl+tr+bl+br [second half]
+    paddd         m1, m0
+    paddd         m3, m2
+    pslld         m1, 2
+    pslld         m3, 2
+    psubd         m1, m0                            ; bb [first half]
+    psubd         m3, m2                            ; bb [second half]
+%endif
+
+%if ARCH_X86_64
+    movu         m11, [aq-4]
+    movu         m12, [aq+4]
+    paddd         m1, [aq]                          ; a:top+ctr+bottom [first half]
+    paddd        m11, m12                           ; a:bl+br [first half]
+    movu         m12, [aq+16-4]
+    movu         m13, [aq+16+4]
+    paddd         m3, [aq+16]                       ; a:top+ctr+bottom [second half]
+    paddd        m12, m13                           ; a:bl+br [second half]
+    paddd        m13, m1, m4                        ; a:top+ctr+bottom+l+r [first half]
+    paddd        m14, m3, m5                        ; a:top+ctr+bottom+l+r [second half]
+    paddd         m0, m11                           ; a:tl+tr+bl+br [first half]
+    paddd         m2, m12                           ; a:tl+tr+bl+br [second half]
+    paddd        m13, m0
+    paddd        m14, m2
+    pslld        m13, 2
+    pslld        m14, 2
+    psubd        m13, m0                            ; bb [first half]
+    psubd        m14, m2                            ; bb [second half]
+    psubd         m1, [aq-(384+16)*4*2]             ; a:ctr+bottom [first half]
+    psubd         m3, [aq-(384+16)*4*2+16]          ; a:ctr+bottom [second half]
+%else
+    mova          m4, [esp+68h]
+    mova   [esp+68h], m5
+    mova          m5, [esp+58h]
+    mova   [esp+58h], m6
+    mova          m6, [esp+48h]
+    mova   [esp+48h], m7
+    mova   [esp+08h], m1
+    movu          m7, [bq-2]
+    movu          m1, [bq+2]
+    paddw         m5, [bq]                          ; b:top+ctr+bottom
+    paddw         m7, m1
+    paddw         m1, m5, m6                        ; b:top+ctr+bottom+l+r
+    paddw         m4, m7                            ; b:tl+tr+bl+br
+    psubw         m5, [bq-(384+16)*2*2]             ; b:ctr+bottom
+    paddw         m1, m4
+    psllw         m1, 2
+    psubw         m1, m4                            ; aa
+    movq          m0, [srcq]
+    XCHG_PIC_REG
+    punpcklbw     m0, [PIC_sym(pb_right_ext_mask)+16]
+    punpcklwd     m4, m1, [PIC_sym(pw_16)]
+    punpckhwd     m1, [PIC_sym(pw_16)]
+    punpcklwd     m2, m0, [PIC_sym(pw_16)]
+    punpckhwd     m0, [PIC_sym(pw_16)]
+    XCHG_PIC_REG
+    pmaddwd       m4, m2                            ; aa*src[x]+256 [first half]
+    pmaddwd       m1, m0                            ; aa*src[x]+256 [second half]
+%endif
+
+%if ARCH_X86_64
+    paddd         m6, m13
+    paddd        m10, m14
+    psrad         m6, 9
+    psrad        m10, 9
+    packssdw      m6, m10
+    mova        [tq], m6
+%else
+    paddd         m4, [esp+08h]
+    paddd         m1, m3
+    psrad         m4, 9
+    psrad         m1, 9
+    packssdw      m4, m1
+    mova        [tq], m4
+%endif
+
+    ; shift to next row
+%if ARCH_X86_64
+    mova          m0, m4
+    mova          m2, m5
+    mova          m4, m11
+    mova          m5, m12
+    mova          m6, m8
+    mova          m8, m9
+%else
+    mova          m1, [esp+38h]
+    mova          m3, [esp+28h]
+    mova          m0, [esp+18h]
+    mova          m2, [esp+68h]
+    mova          m4, [esp+58h]
+    mova   [esp+58h], m5
+    mova          m5, [esp+48h]
+    mova   [esp+68h], m6
+    mova   [esp+48h], m7
+    psubd         m1, [aq-(384+16)*4*2]             ; a:ctr+bottom [first half]
+    psubd         m3, [aq-(384+16)*4*2+16]          ; a:ctr+bottom [second half]
+%endif
+
+    add           aq, (384+16)*4
+    add           bq, (384+16)*2
+    add           tq, 384*2
+    add         srcq, strideq
+    dec           yd
+    jg .loop_y
+    add           xd, 8
+    cmp           xd, wd
+    jl .loop_x
+    RET
+
+%if ARCH_X86_64
+cglobal sgr_weighted1, 6, 6, 8, dst, stride, t, w, h, wt
+%else
+cglobal sgr_weighted1, 6, 7, 8, dst, stride, t, w, h, wt
+    SETUP_PIC r6, 0
+%endif
+    movd          m0, wtd
+    pshufb        m0, [PIC_sym(pb_0_1)]
+    psllw         m0, 4
+    pxor          m7, m7
+    DEFINE_ARGS dst, stride, t, w, h, idx
+.loop_y:
+    xor         idxd, idxd
+.loop_x:
+    mova          m1, [tq+idxq*2+ 0]
+    mova          m4, [tq+idxq*2+16]
+    mova          m5, [dstq+idxq]
+    punpcklbw     m2, m5, m7
+    punpckhbw     m5, m7
+    psllw         m3, m2, 4
+    psllw         m6, m5, 4
+    psubw         m1, m3
+    psubw         m4, m6
+    pmulhrsw      m1, m0
+    pmulhrsw      m4, m0
+    paddw         m1, m2
+    paddw         m4, m5
+    packuswb      m1, m4
+    mova [dstq+idxq], m1
+    add         idxd, 16
+    cmp         idxd, wd
+    jl .loop_x
+    add         dstq, strideq
+    add           tq, 384 * 2
+    dec           hd
+    jg .loop_y
+    RET
+
+%if ARCH_X86_64
+cglobal sgr_box5_h, 8, 11, 12, sumsq, sum, left, src, stride, w, h, edge, x, xlim
+    mova         m10, [pb_0]
+    mova         m11, [pb_0_1]
+%else
+cglobal sgr_box5_h, 8, 8, 8, 8, sumsq, sum, left, src, xlim, x, h, edge
+ %define edged      edgemp
+ %define wd         xd
+ %define wq         wd
+ %define wm         r5m
+ %define strideq    r4m
+
+    SETUP_PIC sumsqd, 1, 1
+
+ %define m10    [PIC_sym(pb_0)]
+ %define m11    [PIC_sym(pb_0_1)]
+%endif
+
+    test       edged, 2                             ; have_right
+    jz .no_right
+    xor        xlimd, xlimd
+    add           wd, 2
+    add           wd, 15
+    and           wd, ~15
+    jmp .right_done
+.no_right:
+    mov        xlimd, 3
+    dec           wd
+.right_done:
+    pxor          m1, m1
+    lea         srcq, [srcq+wq+1]
+    lea         sumq, [sumq+wq*2-2]
+    lea       sumsqq, [sumsqq+wq*4-4]
+    neg           wq
+%if ARCH_X86_64
+    lea          r10, [pb_right_ext_mask+16]
+%else
+    mov           wm, xd
+ %define wq wm
+%endif
+
+.loop_y:
+    mov           xq, wq
+    ; load left
+    test       edged, 1                             ; have_left
+    jz .no_left
+    test       leftq, leftq
+    jz .load_left_from_main
+    movd          m0, [leftq]
+    movd          m2, [srcq+xq-1]
+    pslldq        m2, 4
+    por           m0, m2
+    pslldq        m0, 11
+    add        leftq, 4
+    jmp .expand_x
+.no_left:
+    movd          m0, [srcq+xq-1]
+    XCHG_PIC_REG
+    pshufb        m0, m10
+    XCHG_PIC_REG
+    jmp .expand_x
+.load_left_from_main:
+    movd          m0, [srcq+xq-4]
+    pslldq        m0, 12
+.expand_x:
+    punpckhbw     m0, m1
+
+    ; when we reach this, m0 contains left two px in highest words
+    cmp           xq, -8
+    jle .loop_x
+    test          xq, xq
+    jge .right_extend
+.partial_load_and_extend:
+    XCHG_PIC_REG
+    movd          m3, [srcq-1]
+    movq          m2, [srcq+xq]
+    pshufb        m3, m10
+    punpcklbw     m3, m1
+    punpcklbw     m2, m1
+%if ARCH_X86_64
+    movu          m4, [r10+xq*2]
+%else
+    movu          m4, [PIC_sym(pb_right_ext_mask+16)+xd*2]
+    XCHG_PIC_REG
+%endif
+    pand          m2, m4
+    pandn         m4, m3
+    por           m2, m4
+    jmp .loop_x_noload
+.right_extend:
+    psrldq        m2, m0, 14
+    XCHG_PIC_REG
+    pshufb        m2, m11
+    XCHG_PIC_REG
+    jmp .loop_x_noload
+
+.loop_x:
+    movq          m2, [srcq+xq]
+    punpcklbw     m2, m1
+.loop_x_noload:
+    palignr       m3, m2, m0, 8
+    palignr       m4, m2, m0, 10
+    palignr       m5, m2, m0, 12
+    palignr       m6, m2, m0, 14
+
+%if ARCH_X86_64
+    paddw         m0, m3, m2
+    punpcklwd     m7, m3, m2
+    punpckhwd     m3, m2
+    paddw         m0, m4
+    punpcklwd     m8, m4, m5
+    punpckhwd     m4, m5
+    paddw         m0, m5
+    punpcklwd     m9, m6, m1
+    punpckhwd     m5, m6, m1
+    paddw         m0, m6
+    pmaddwd       m7, m7
+    pmaddwd       m3, m3
+    pmaddwd       m8, m8
+    pmaddwd       m4, m4
+    pmaddwd       m9, m9
+    pmaddwd       m5, m5
+    paddd         m7, m8
+    paddd         m3, m4
+    paddd         m7, m9
+    paddd         m3, m5
+    movu [sumq+xq*2], m0
+    movu [sumsqq+xq*4+ 0], m7
+    movu [sumsqq+xq*4+16], m3
+%else
+    paddw         m0, m3, m2
+    paddw         m0, m4
+    paddw         m0, m5
+    paddw         m0, m6
+    movu [sumq+xq*2], m0
+    punpcklwd     m7, m3, m2
+    punpckhwd     m3, m2
+    punpcklwd     m0, m4, m5
+    punpckhwd     m4, m5
+    punpckhwd     m5, m6, m1
+    pmaddwd       m7, m7
+    pmaddwd       m3, m3
+    pmaddwd       m0, m0
+    pmaddwd       m4, m4
+    pmaddwd       m5, m5
+    paddd         m7, m0
+    paddd         m3, m4
+    paddd         m3, m5
+    punpcklwd     m0, m6, m1
+    pmaddwd       m0, m0
+    paddd         m7, m0
+    movu [sumsqq+xq*4+ 0], m7
+    movu [sumsqq+xq*4+16], m3
+%endif
+
+    mova          m0, m2
+    add           xq, 8
+
+    ; if x <= -8 we can reload more pixels
+    ; else if x < 0 we reload and extend (this implies have_right=0)
+    ; else if x < xlimd we extend from previous load (this implies have_right=0)
+    ; else we are done
+
+    cmp           xq, -8
+    jle .loop_x
+    test          xq, xq
+    jl .partial_load_and_extend
+    cmp           xq, xlimq
+    jl .right_extend
+
+    add       sumsqq, (384+16)*4
+    add         sumq, (384+16)*2
+    add         srcq, strideq
+    dec           hd
+    jg .loop_y
+    RET
+
+%if ARCH_X86_64
+cglobal sgr_box5_v, 5, 10, 15, sumsq, sum, w, h, edge, x, y, sumsq_ptr, sum_ptr, ylim
+    mov        ylimd, edged
+%else
+cglobal sgr_box5_v, 5, 7, 8, 32, sumsq, sum, x, y, ylim, sumsq_ptr, sum_ptr
+ %define wm     r2m
+ %define hm     r3m
+ %define edgem  r4m
+ %define edgemp r4mp
+%endif
+
+    and        ylimd, 8                             ; have_bottom
+    shr        ylimd, 2
+    sub        ylimd, 3                             ; -3 if have_bottom=0, else -1
+    mov           xq, -2
+%if ARCH_X86_64
+.loop_x:
+    lea           yd, [hd+ylimd+2]
+    lea   sumsq_ptrq, [sumsqq+xq*4+4-(384+16)*4]
+    lea     sum_ptrq, [  sumq+xq*2+2-(384+16)*2]
+    test       edged, 4                             ; have_top
+    jnz .load_top
+    movu          m0, [sumsq_ptrq+(384+16)*4*1]
+    movu          m1, [sumsq_ptrq+(384+16)*4*1+16]
+    mova          m2, m0
+    mova          m3, m1
+    mova          m4, m0
+    mova          m5, m1
+    mova          m6, m0
+    mova          m7, m1
+    movu         m10, [sum_ptrq+(384+16)*2*1]
+    mova         m11, m10
+    mova         m12, m10
+    mova         m13, m10
+    jmp .loop_y_second_load
+.load_top:
+    movu          m0, [sumsq_ptrq-(384+16)*4*1]      ; l3/4sq [left]
+    movu          m1, [sumsq_ptrq-(384+16)*4*1+16]   ; l3/4sq [right]
+    movu          m4, [sumsq_ptrq-(384+16)*4*0]      ; l2sq [left]
+    movu          m5, [sumsq_ptrq-(384+16)*4*0+16]   ; l2sq [right]
+    mova          m2, m0
+    mova          m3, m1
+    movu         m10, [sum_ptrq-(384+16)*2*1]        ; l3/4
+    movu         m12, [sum_ptrq-(384+16)*2*0]        ; l2
+    mova         m11, m10
+.loop_y:
+    movu          m6, [sumsq_ptrq+(384+16)*4*1]      ; l1sq [left]
+    movu          m7, [sumsq_ptrq+(384+16)*4*1+16]   ; l1sq [right]
+    movu         m13, [sum_ptrq+(384+16)*2*1]        ; l1
+.loop_y_second_load:
+    test          yd, yd
+    jle .emulate_second_load
+    movu          m8, [sumsq_ptrq+(384+16)*4*2]      ; l0sq [left]
+    movu          m9, [sumsq_ptrq+(384+16)*4*2+16]   ; l0sq [right]
+    movu         m14, [sum_ptrq+(384+16)*2*2]        ; l0
+.loop_y_noload:
+    paddd         m0, m2
+    paddd         m1, m3
+    paddw        m10, m11
+    paddd         m0, m4
+    paddd         m1, m5
+    paddw        m10, m12
+    paddd         m0, m6
+    paddd         m1, m7
+    paddw        m10, m13
+    paddd         m0, m8
+    paddd         m1, m9
+    paddw        m10, m14
+    movu [sumsq_ptrq+ 0], m0
+    movu [sumsq_ptrq+16], m1
+    movu  [sum_ptrq], m10
+
+    ; shift position down by one
+    mova          m0, m4
+    mova          m1, m5
+    mova          m2, m6
+    mova          m3, m7
+    mova          m4, m8
+    mova          m5, m9
+    mova         m10, m12
+    mova         m11, m13
+    mova         m12, m14
+    add   sumsq_ptrq, (384+16)*4*2
+    add     sum_ptrq, (384+16)*2*2
+    sub           yd, 2
+    jge .loop_y
+    ; l1 = l0
+    mova          m6, m8
+    mova          m7, m9
+    mova         m13, m14
+    cmp           yd, ylimd
+    jg .loop_y_noload
+    add           xd, 8
+    cmp           xd, wd
+    jl .loop_x
+    RET
+.emulate_second_load:
+    mova          m8, m6
+    mova          m9, m7
+    mova         m14, m13
+    jmp .loop_y_noload
+%else
+.sumsq_loop_x:
+    lea           yd, [ylimd+2]
+    add           yd, hm
+    lea   sumsq_ptrq, [sumsqq+xq*4+4-(384+16)*4]
+    test      edgemp, 4                             ; have_top
+    jnz .sumsq_load_top
+    movu          m0, [sumsq_ptrq+(384+16)*4*1]
+    movu          m1, [sumsq_ptrq+(384+16)*4*1+16]
+    mova          m4, m0
+    mova          m5, m1
+    mova          m6, m0
+    mova          m7, m1
+    mova   [esp+10h], m0
+    mova   [esp+ 0h], m1
+    jmp .sumsq_loop_y_second_load
+.sumsq_load_top:
+    movu          m0, [sumsq_ptrq-(384+16)*4*1]      ; l3/4sq [left]
+    movu          m1, [sumsq_ptrq-(384+16)*4*1+16]   ; l3/4sq [right]
+    movu          m4, [sumsq_ptrq-(384+16)*4*0]      ; l2sq [left]
+    movu          m5, [sumsq_ptrq-(384+16)*4*0+16]   ; l2sq [right]
+    mova   [esp+10h], m0
+    mova   [esp+ 0h], m1
+.sumsq_loop_y:
+    movu          m6, [sumsq_ptrq+(384+16)*4*1]      ; l1sq [left]
+    movu          m7, [sumsq_ptrq+(384+16)*4*1+16]   ; l1sq [right]
+.sumsq_loop_y_second_load:
+    test          yd, yd
+    jle .sumsq_emulate_second_load
+    movu          m2, [sumsq_ptrq+(384+16)*4*2]      ; l0sq [left]
+    movu          m3, [sumsq_ptrq+(384+16)*4*2+16]   ; l0sq [right]
+.sumsq_loop_y_noload:
+    paddd         m0, [esp+10h]
+    paddd         m1, [esp+ 0h]
+    paddd         m0, m4
+    paddd         m1, m5
+    paddd         m0, m6
+    paddd         m1, m7
+    paddd         m0, m2
+    paddd         m1, m3
+    movu [sumsq_ptrq+ 0], m0
+    movu [sumsq_ptrq+16], m1
+
+    ; shift position down by one
+    mova          m0, m4
+    mova          m1, m5
+    mova          m4, m2
+    mova          m5, m3
+    mova   [esp+10h], m6
+    mova   [esp+ 0h], m7
+    add   sumsq_ptrq, (384+16)*4*2
+    sub           yd, 2
+    jge .sumsq_loop_y
+    ; l1 = l0
+    mova          m6, m2
+    mova          m7, m3
+    cmp           yd, ylimd
+    jg .sumsq_loop_y_noload
+    add           xd, 8
+    cmp           xd, wm
+    jl .sumsq_loop_x
+
+    mov           xd, -2
+.sum_loop_x:
+    lea           yd, [ylimd+2]
+    add           yd, hm
+    lea     sum_ptrq, [sumq+xq*2+2-(384+16)*2]
+    test      edgemp, 4                             ; have_top
+    jnz .sum_load_top
+    movu          m0, [sum_ptrq+(384+16)*2*1]
+    mova          m1, m0
+    mova          m2, m0
+    mova          m3, m0
+    jmp .sum_loop_y_second_load
+.sum_load_top:
+    movu          m0, [sum_ptrq-(384+16)*2*1]        ; l3/4
+    movu          m2, [sum_ptrq-(384+16)*2*0]        ; l2
+    mova          m1, m0
+.sum_loop_y:
+    movu          m3, [sum_ptrq+(384+16)*2*1]        ; l1
+.sum_loop_y_second_load:
+    test          yd, yd
+    jle .sum_emulate_second_load
+    movu          m4, [sum_ptrq+(384+16)*2*2]        ; l0
+.sum_loop_y_noload:
+    paddw         m0, m1
+    paddw         m0, m2
+    paddw         m0, m3
+    paddw         m0, m4
+    movu  [sum_ptrq], m0
+
+    ; shift position down by one
+    mova          m0, m2
+    mova          m1, m3
+    mova          m2, m4
+    add     sum_ptrq, (384+16)*2*2
+    sub           yd, 2
+    jge .sum_loop_y
+    ; l1 = l0
+    mova          m3, m4
+    cmp           yd, ylimd
+    jg .sum_loop_y_noload
+    add           xd, 8
+    cmp           xd, wm
+    jl .sum_loop_x
+    RET
+.sumsq_emulate_second_load:
+    mova          m2, m6
+    mova          m3, m7
+    jmp .sumsq_loop_y_noload
+.sum_emulate_second_load:
+    mova          m4, m3
+    jmp .sum_loop_y_noload
+%endif
+
+cglobal sgr_calc_ab2, 5, 7, 14, a, b, w, h, s
+    sub           aq, (384+16-1)*4
+    sub           bq, (384+16-1)*2
+    add           hd, 2
+%if ARCH_X86_64
+    LEA           r5, sgr_x_by_x-0xF03
+%else
+    SETUP_PIC r5, 0
+%endif
+    movd          m6, sd
+    pshufd        m6, m6, 0
+    pxor          m7, m7
+    DEFINE_ARGS a, b, w, h, x
+%if ARCH_X86_64
+    mova          m8, [pd_0xF0080029]
+    mova          m9, [pw_256]
+    psrld        m10, m9, 15                        ; pd_512
+%else
+ %define m8     [PIC_sym(pd_0xF0080029)]
+ %define m9     [PIC_sym(pw_256)]
+ %define m10    [PIC_sym(pd_512)]
+%endif
+.loop_y:
+    mov           xq, -2
+.loop_x:
+    movq          m0, [bq+xq*2+0]
+    movq          m1, [bq+xq*2+8]
+    punpcklwd     m0, m7
+    punpcklwd     m1, m7
+    movu          m2, [aq+xq*4+ 0]
+    movu          m3, [aq+xq*4+16]
+    pslld         m4, m2, 3                         ; aa * 8
+    pslld         m5, m3, 3
+    paddd         m2, m4                            ; aa * 9
+    paddd         m3, m5
+    paddd         m4, m4                            ; aa * 16
+    paddd         m5, m5
+    paddd         m2, m4                            ; aa * 25
+    paddd         m3, m5
+    pmaddwd       m4, m0, m0
+    pmaddwd       m5, m1, m1
+    psubd         m2, m4                            ; p = aa * 25 - bb * bb
+    psubd         m3, m5
+    MULLD         m2, m6
+    MULLD         m3, m6
+    paddusw       m2, m8
+    paddusw       m3, m8
+    psrld         m2, 20                            ; z
+    psrld         m3, 20
+    GATHERDD      m4, m2                            ; xx
+    GATHERDD      m2, m3
+    psrld         m4, 24
+    psrld         m2, 24
+    packssdw      m3, m4, m2
+    pmullw        m4, m8
+    pmullw        m2, m8
+    psubw         m5, m9, m3
+    pmaddwd       m0, m4
+    pmaddwd       m1, m2
+    paddd         m0, m10
+    paddd         m1, m10
+    psrld         m0, 10
+    psrld         m1, 10
+    movu   [bq+xq*2], m5
+    movu [aq+xq*4+ 0], m0
+    movu [aq+xq*4+16], m1
+    add           xd, 8
+    cmp           xd, wd
+    jl .loop_x
+    add           aq, (384+16)*4*2
+    add           bq, (384+16)*2*2
+    sub           hd, 2
+    jg .loop_y
+    RET
+
+%if ARCH_X86_64
+cglobal sgr_finish_filter2, 7, 13, 14, t, src, stride, a, b, w, h, \
+                                       tmp_base, src_base, a_base, b_base, x, y
+    mov    tmp_baseq, tq
+    mov    src_baseq, srcq
+    mov      a_baseq, aq
+    mov      b_baseq, bq
+    mova          m9, [pw_5_6]
+    mova         m12, [pw_256]
+    psrlw        m10, m12, 8                    ; pw_1
+    psrlw        m11, m12, 1                    ; pw_128
+    pxor         m13, m13
+%else
+cglobal sgr_finish_filter2, 7, 7, 8, 8, t, src, stride, a, b, x, y
+ %define tmp_baseq  r0m
+ %define src_baseq  r1m
+ %define a_baseq    r3m
+ %define b_baseq    r4m
+ %define wd         r5m
+ %define hd         r6m
+
+    SETUP_PIC yd
+
+ %define m8     m5
+ %define m9     [PIC_sym(pw_5_6)]
+ %define m10    [PIC_sym(pw_1)]
+ %define m11    [PIC_sym(pw_128)]
+ %define m12    [PIC_sym(pw_256)]
+ %define m13    m0
+%endif
+    xor           xd, xd
+.loop_x:
+    mov           tq, tmp_baseq
+    mov         srcq, src_baseq
+    mov           aq, a_baseq
+    mov           bq, b_baseq
+    movu          m0, [aq+xq*4-(384+16)*4-4]
+    mova          m1, [aq+xq*4-(384+16)*4]
+    movu          m2, [aq+xq*4-(384+16)*4+4]
+    movu          m3, [aq+xq*4-(384+16)*4-4+16]
+    mova          m4, [aq+xq*4-(384+16)*4+16]
+    movu          m5, [aq+xq*4-(384+16)*4+4+16]
+    paddd         m0, m2
+    paddd         m3, m5
+    paddd         m0, m1
+    paddd         m3, m4
+    pslld         m2, m0, 2
+    pslld         m5, m3, 2
+    paddd         m2, m0
+    paddd         m5, m3
+    paddd         m0, m2, m1                    ; prev_odd_b [first half]
+    paddd         m1, m5, m4                    ; prev_odd_b [second half]
+    movu          m3, [bq+xq*2-(384+16)*2-2]
+    mova          m4, [bq+xq*2-(384+16)*2]
+    movu          m5, [bq+xq*2-(384+16)*2+2]
+    paddw         m3, m5
+    punpcklwd     m5, m3, m4
+    punpckhwd     m3, m4
+    pmaddwd       m5, m9
+    pmaddwd       m3, m9
+    mova          m2, m5
+    packssdw      m2, m3                        ; prev_odd_a
+    lea           tq, [tq+xq*2]
+    lea         srcq, [srcq+xq*1]
+    lea           aq, [aq+xq*4+(384+16)*4]
+    lea           bq, [bq+xq*2+(384+16)*2]
+%if ARCH_X86_32
+    mov        [esp], PIC_reg
+%endif
+    mov           yd, hd
+    XCHG_PIC_REG
+.loop_y:
+    movu          m3, [aq-4]
+    mova          m4, [aq]
+    movu          m5, [aq+4]
+    paddd         m3, m5
+    paddd         m3, m4
+    pslld         m5, m3, 2
+    paddd         m5, m3
+    paddd         m5, m4                        ; cur_odd_b [first half]
+    movu          m3, [aq+16-4]
+    mova          m6, [aq+16]
+    movu          m7, [aq+16+4]
+    paddd         m3, m7
+    paddd         m3, m6
+    pslld         m7, m3, 2
+    paddd         m7, m3
+    paddd         m4, m7, m6                    ; cur_odd_b [second half]
+    movu          m3, [bq-2]
+    mova          m6, [bq]
+    movu          m7, [bq+2]
+    paddw         m3, m7
+    punpcklwd     m7, m3, m6
+    punpckhwd     m3, m6
+    pmaddwd       m7, m9
+    pmaddwd       m3, m9
+    packssdw      m6, m7, m3                    ; cur_odd_a
+
+    paddd         m0, m5                        ; cur_even_b [first half]
+    paddd         m1, m4                        ; cur_even_b [second half]
+    paddw         m2, m6                        ; cur_even_a
+
+    movq          m3, [srcq]
+%if ARCH_X86_64
+    punpcklbw     m3, m13
+%else
+    mova        [td], m5
+    pxor          m7, m7
+    punpcklbw     m3, m7
+%endif
+    punpcklwd     m7, m3, m10
+    punpckhwd     m3, m10
+    punpcklwd     m8, m2, m12
+    punpckhwd     m2, m12
+    pmaddwd       m7, m8
+    pmaddwd       m3, m2
+    paddd         m7, m0
+    paddd         m3, m1
+    psrad         m7, 9
+    psrad         m3, 9
+
+%if ARCH_X86_32
+    pxor         m13, m13
+%endif
+    movq          m8, [srcq+strideq]
+    punpcklbw     m8, m13
+    punpcklwd     m0, m8, m10
+    punpckhwd     m8, m10
+    punpcklwd     m1, m6, m11
+    punpckhwd     m2, m6, m11
+    pmaddwd       m0, m1
+    pmaddwd       m8, m2
+%if ARCH_X86_64
+    paddd         m0, m5
+%else
+    paddd         m0, [td]
+%endif
+    paddd         m8, m4
+    psrad         m0, 8
+    psrad         m8, 8
+
+    packssdw      m7, m3
+    packssdw      m0, m8
+%if ARCH_X86_32
+    mova          m5, [td]
+%endif
+    mova [tq+384*2*0], m7
+    mova [tq+384*2*1], m0
+
+    mova          m0, m5
+    mova          m1, m4
+    mova          m2, m6
+    add           aq, (384+16)*4*2
+    add           bq, (384+16)*2*2
+    add           tq, 384*2*2
+    lea         srcq, [srcq+strideq*2]
+%if ARCH_X86_64
+    sub           yd, 2
+%else
+    sub dword [esp+4], 2
+%endif
+    jg .loop_y
+    add           xd, 8
+    cmp           xd, wd
+    jl .loop_x
+    RET
+
+%if ARCH_X86_64
+cglobal sgr_weighted2, 7, 7, 12, dst, stride, t1, t2, w, h, wt
+    mova         m10, [pd_1024]
+    pxor         m11, m11
+%else
+cglobal sgr_weighted2, 7, 7, 8, 4, dst, stride, t1, t2, w, h, wt
+    SETUP_PIC hd
+ %define m10    [PIC_sym(pd_1024)]
+ %define m11    m7
+%endif
+    movd          m0, [wtq]
+    pshufd        m0, m0, 0
+    DEFINE_ARGS dst, stride, t1, t2, w, h, idx
+%if ARCH_X86_32
+ %define hd     dword [esp]
+%endif
+
+.loop_y:
+    xor         idxd, idxd
+.loop_x:
+    mova          m1, [t1q+idxq*2+ 0]
+    mova          m2, [t1q+idxq*2+16]
+    mova          m3, [t2q+idxq*2+ 0]
+    mova          m4, [t2q+idxq*2+16]
+    mova          m6, [dstq+idxq]
+%if ARCH_X86_32
+    pxor          m11, m11
+%endif
+    punpcklbw     m5, m6, m11
+    punpckhbw     m6, m11
+    psllw         m7, m5, 4
+    psubw         m1, m7
+    psubw         m3, m7
+    psllw         m7, m6, 4
+    psubw         m2, m7
+    psubw         m4, m7
+    punpcklwd     m7, m1, m3
+    punpckhwd     m1, m3
+    punpcklwd     m3, m2, m4
+    punpckhwd     m2, m4
+    pmaddwd       m7, m0
+    pmaddwd       m1, m0
+    pmaddwd       m3, m0
+    pmaddwd       m2, m0
+    paddd         m7, m10
+    paddd         m1, m10
+    paddd         m3, m10
+    paddd         m2, m10
+    psrad         m7, 11
+    psrad         m1, 11
+    psrad         m3, 11
+    psrad         m2, 11
+    packssdw      m7, m1
+    packssdw      m3, m2
+    paddw         m7, m5
+    paddw         m3, m6
+    packuswb      m7, m3
+    mova [dstq+idxq], m7
+    add         idxd, 16
+    cmp         idxd, wd
+    jl .loop_x
+    add         dstq, strideq
+    add          t1q, 384 * 2
+    add          t2q, 384 * 2
+    dec           hd
+    jg .loop_y
+    RET