/*****************************************************************************
 * mc-c.c: x86 motion compensation
 *****************************************************************************
 * Copyright (C) 2003-2017 x264 project
 *
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
 *          Loren Merritt <lorenm@u.washington.edu>
 *          Fiona Glaser <fiona@x264.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
 *
 * This program is also available under a commercial proprietary license.
 * For more information, contact us at licensing@x264.com.
 *****************************************************************************/

#include "common/common.h"
#include "mc.h"

#define DECL_SUF( func, args )\
    void func##_mmx2 args;\
    void func##_sse2 args;\
    void func##_ssse3 args;\
    void func##_avx2 args;

DECL_SUF( x264_pixel_avg_16x16, ( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t, int ))
DECL_SUF( x264_pixel_avg_16x8,  ( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t, int ))
DECL_SUF( x264_pixel_avg_8x16,  ( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t, int ))
DECL_SUF( x264_pixel_avg_8x8,   ( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t, int ))
DECL_SUF( x264_pixel_avg_8x4,   ( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t, int ))
DECL_SUF( x264_pixel_avg_4x16,  ( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t, int ))
DECL_SUF( x264_pixel_avg_4x8,   ( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t, int ))
DECL_SUF( x264_pixel_avg_4x4,   ( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t, int ))
DECL_SUF( x264_pixel_avg_4x2,   ( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t, int ))

#define MC_WEIGHT(w,type) \
    void x264_mc_weight_w##w##_##type( pixel *, intptr_t, pixel *, intptr_t, const x264_weight_t *, int );

#define MC_WEIGHT_OFFSET(w,type) \
    void x264_mc_offsetadd_w##w##_##type( pixel *, intptr_t, pixel *, intptr_t, const x264_weight_t *, int ); \
    void x264_mc_offsetsub_w##w##_##type( pixel *, intptr_t, pixel *, intptr_t, const x264_weight_t *, int ); \
    MC_WEIGHT(w,type)

MC_WEIGHT_OFFSET( 4, mmx2 )
MC_WEIGHT_OFFSET( 8, mmx2 )
MC_WEIGHT_OFFSET( 12, mmx2 )
MC_WEIGHT_OFFSET( 16, mmx2 )
MC_WEIGHT_OFFSET( 20, mmx2 )
MC_WEIGHT_OFFSET( 12, sse2 )
MC_WEIGHT_OFFSET( 16, sse2 )
MC_WEIGHT_OFFSET( 20, sse2 )
#if HIGH_BIT_DEPTH
MC_WEIGHT_OFFSET( 8, sse2 )
#endif
MC_WEIGHT( 8, sse2  )
MC_WEIGHT( 4, ssse3 )
MC_WEIGHT( 8, ssse3 )
MC_WEIGHT( 12, ssse3 )
MC_WEIGHT( 16, ssse3 )
MC_WEIGHT( 20, ssse3 )
MC_WEIGHT( 8, avx2 )
MC_WEIGHT( 16, avx2 )
MC_WEIGHT( 20, avx2 )
#undef MC_OFFSET
#undef MC_WEIGHT

void x264_mc_copy_w4_mmx ( pixel *, intptr_t, pixel *, intptr_t, int );
void x264_mc_copy_w8_mmx ( pixel *, intptr_t, pixel *, intptr_t, int );
void x264_mc_copy_w8_sse ( pixel *, intptr_t, pixel *, intptr_t, int );
void x264_mc_copy_w16_mmx( pixel *, intptr_t, pixel *, intptr_t, int );
void x264_mc_copy_w16_sse( pixel *, intptr_t, pixel *, intptr_t, int );
void x264_mc_copy_w16_aligned_sse( pixel *, intptr_t, pixel *, intptr_t, int );
void x264_mc_copy_w16_avx( uint16_t *, intptr_t, uint16_t *, intptr_t, int );
void x264_mc_copy_w16_aligned_avx( uint16_t *, intptr_t, uint16_t *, intptr_t, int );
void x264_prefetch_fenc_420_mmx2( pixel *, intptr_t, pixel *, intptr_t, int );
void x264_prefetch_fenc_422_mmx2( pixel *, intptr_t, pixel *, intptr_t, int );
void x264_prefetch_ref_mmx2( pixel *, intptr_t, int );
void x264_plane_copy_core_sse( pixel *, intptr_t, pixel *, intptr_t, int w, int h );
void x264_plane_copy_core_avx( pixel *, intptr_t, pixel *, intptr_t, int w, int h );
void x264_plane_copy_swap_core_ssse3( pixel *, intptr_t, pixel *, intptr_t, int w, int h );
void x264_plane_copy_swap_core_avx2 ( pixel *, intptr_t, pixel *, intptr_t, int w, int h );
void x264_plane_copy_interleave_core_mmx2( pixel *dst,  intptr_t i_dst,
                                           pixel *srcu, intptr_t i_srcu,
                                           pixel *srcv, intptr_t i_srcv, int w, int h );
void x264_plane_copy_interleave_core_sse2( pixel *dst,  intptr_t i_dst,
                                           pixel *srcu, intptr_t i_srcu,
                                           pixel *srcv, intptr_t i_srcv, int w, int h );
void x264_plane_copy_interleave_core_avx( pixel *dst,  intptr_t i_dst,
                                          pixel *srcu, intptr_t i_srcu,
                                          pixel *srcv, intptr_t i_srcv, int w, int h );
void x264_plane_copy_deinterleave_sse2( pixel *dsta, intptr_t i_dsta,
                                        pixel *dstb, intptr_t i_dstb,
                                        pixel *src,  intptr_t i_src, int w, int h );
void x264_plane_copy_deinterleave_ssse3( uint8_t *dsta, intptr_t i_dsta,
                                         uint8_t *dstb, intptr_t i_dstb,
                                         uint8_t *src,  intptr_t i_src, int w, int h );
void x264_plane_copy_deinterleave_avx( uint16_t *dsta, intptr_t i_dsta,
                                       uint16_t *dstb, intptr_t i_dstb,
                                       uint16_t *src,  intptr_t i_src, int w, int h );
void x264_plane_copy_deinterleave_avx2( pixel *dsta, intptr_t i_dsta,
                                        pixel *dstb, intptr_t i_dstb,
                                        pixel *src,  intptr_t i_src, int w, int h );
void x264_plane_copy_deinterleave_rgb_sse2 ( pixel *dsta, intptr_t i_dsta,
                                             pixel *dstb, intptr_t i_dstb,
                                             pixel *dstc, intptr_t i_dstc,
                                             pixel *src,  intptr_t i_src, int pw, int w, int h );
void x264_plane_copy_deinterleave_rgb_ssse3( pixel *dsta, intptr_t i_dsta,
                                             pixel *dstb, intptr_t i_dstb,
                                             pixel *dstc, intptr_t i_dstc,
                                             pixel *src,  intptr_t i_src, int pw, int w, int h );
void x264_plane_copy_deinterleave_rgb_avx2 ( pixel *dsta, intptr_t i_dsta,
                                             pixel *dstb, intptr_t i_dstb,
                                             pixel *dstc, intptr_t i_dstc,
                                             pixel *src,  intptr_t i_src, int pw, int w, int h );
void x264_plane_copy_deinterleave_v210_ssse3 ( uint16_t *dstu, intptr_t i_dstu,
                                               uint16_t *dstv, intptr_t i_dstv,
                                               uint32_t *src,  intptr_t i_src, int w, int h );
void x264_plane_copy_deinterleave_v210_avx   ( uint16_t *dstu, intptr_t i_dstu,
                                               uint16_t *dstv, intptr_t i_dstv,
                                               uint32_t *src,  intptr_t i_src, int w, int h );
void x264_plane_copy_deinterleave_v210_avx2  ( uint16_t *dstu, intptr_t i_dstu,
                                               uint16_t *dstv, intptr_t i_dstv,
                                               uint32_t *src,  intptr_t i_src, int w, int h );
void x264_plane_copy_deinterleave_v210_avx512( uint16_t *dstu, intptr_t i_dstu,
                                               uint16_t *dstv, intptr_t i_dstv,
                                               uint32_t *src,  intptr_t i_src, int w, int h );
void x264_store_interleave_chroma_mmx2( pixel *dst, intptr_t i_dst, pixel *srcu, pixel *srcv, int height );
void x264_store_interleave_chroma_sse2( pixel *dst, intptr_t i_dst, pixel *srcu, pixel *srcv, int height );
void x264_store_interleave_chroma_avx ( pixel *dst, intptr_t i_dst, pixel *srcu, pixel *srcv, int height );
void x264_load_deinterleave_chroma_fenc_sse2( pixel *dst, pixel *src, intptr_t i_src, int height );
void x264_load_deinterleave_chroma_fenc_ssse3( uint8_t *dst, uint8_t *src, intptr_t i_src, int height );
void x264_load_deinterleave_chroma_fenc_avx( uint16_t *dst, uint16_t *src, intptr_t i_src, int height );
void x264_load_deinterleave_chroma_fenc_avx2( pixel *dst, pixel *src, intptr_t i_src, int height );
void x264_load_deinterleave_chroma_fdec_sse2( pixel *dst, pixel *src, intptr_t i_src, int height );
void x264_load_deinterleave_chroma_fdec_ssse3( uint8_t *dst, uint8_t *src, intptr_t i_src, int height );
void x264_load_deinterleave_chroma_fdec_avx( uint16_t *dst, uint16_t *src, intptr_t i_src, int height );
void x264_load_deinterleave_chroma_fdec_avx2( uint16_t *dst, uint16_t *src, intptr_t i_src, int height );
void *x264_memcpy_aligned_sse   ( void *dst, const void *src, size_t n );
void *x264_memcpy_aligned_avx   ( void *dst, const void *src, size_t n );
void *x264_memcpy_aligned_avx512( void *dst, const void *src, size_t n );
void x264_memzero_aligned_sse   ( void *dst, size_t n );
void x264_memzero_aligned_avx   ( void *dst, size_t n );
void x264_memzero_aligned_avx512( void *dst, size_t n );
void x264_integral_init4h_sse4( uint16_t *sum, uint8_t *pix, intptr_t stride );
void x264_integral_init4h_avx2( uint16_t *sum, uint8_t *pix, intptr_t stride );
void x264_integral_init8h_sse4( uint16_t *sum, uint8_t *pix, intptr_t stride );
void x264_integral_init8h_avx ( uint16_t *sum, uint8_t *pix, intptr_t stride );
void x264_integral_init8h_avx2( uint16_t *sum, uint8_t *pix, intptr_t stride );
void x264_integral_init4v_mmx  ( uint16_t *sum8, uint16_t *sum4, intptr_t stride );
void x264_integral_init4v_sse2 ( uint16_t *sum8, uint16_t *sum4, intptr_t stride );
void x264_integral_init4v_ssse3( uint16_t *sum8, uint16_t *sum4, intptr_t stride );
void x264_integral_init4v_avx2( uint16_t *sum8, uint16_t *sum4, intptr_t stride );
void x264_integral_init8v_mmx ( uint16_t *sum8, intptr_t stride );
void x264_integral_init8v_sse2( uint16_t *sum8, intptr_t stride );
void x264_integral_init8v_avx2( uint16_t *sum8, intptr_t stride );
void x264_mbtree_propagate_cost_sse2  ( int16_t *dst, uint16_t *propagate_in, uint16_t *intra_costs,
                                        uint16_t *inter_costs, uint16_t *inv_qscales, float *fps_factor, int len );
void x264_mbtree_propagate_cost_avx   ( int16_t *dst, uint16_t *propagate_in, uint16_t *intra_costs,
                                        uint16_t *inter_costs, uint16_t *inv_qscales, float *fps_factor, int len );
void x264_mbtree_propagate_cost_fma4  ( int16_t *dst, uint16_t *propagate_in, uint16_t *intra_costs,
                                        uint16_t *inter_costs, uint16_t *inv_qscales, float *fps_factor, int len );
void x264_mbtree_propagate_cost_avx2  ( int16_t *dst, uint16_t *propagate_in, uint16_t *intra_costs,
                                        uint16_t *inter_costs, uint16_t *inv_qscales, float *fps_factor, int len );
void x264_mbtree_propagate_cost_avx512( int16_t *dst, uint16_t *propagate_in, uint16_t *intra_costs,
                                        uint16_t *inter_costs, uint16_t *inv_qscales, float *fps_factor, int len );
void x264_mbtree_fix8_pack_ssse3( uint16_t *dst, float *src, int count );
void x264_mbtree_fix8_pack_avx2 ( uint16_t *dst, float *src, int count );
void x264_mbtree_fix8_unpack_ssse3( float *dst, uint16_t *src, int count );
void x264_mbtree_fix8_unpack_avx2 ( float *dst, uint16_t *src, int count );

#define MC_CHROMA(cpu)\
void x264_mc_chroma_##cpu( pixel *dstu, pixel *dstv, intptr_t i_dst, pixel *src, intptr_t i_src,\
                           int dx, int dy, int i_width, int i_height );
MC_CHROMA(mmx2)
MC_CHROMA(sse2)
MC_CHROMA(ssse3)
MC_CHROMA(cache64_ssse3)
MC_CHROMA(avx)
MC_CHROMA(avx2)

#define LOWRES(cpu)\
void x264_frame_init_lowres_core_##cpu( pixel *src0, pixel *dst0, pixel *dsth, pixel *dstv, pixel *dstc,\
                                        intptr_t src_stride, intptr_t dst_stride, int width, int height );
LOWRES(mmx2)
LOWRES(cache32_mmx2)
LOWRES(sse2)
LOWRES(ssse3)
LOWRES(avx)
LOWRES(xop)
LOWRES(avx2)

#define PIXEL_AVG_W(width,cpu)\
void x264_pixel_avg2_w##width##_##cpu( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t );
/* This declares some functions that don't exist, but that isn't a problem. */
#define PIXEL_AVG_WALL(cpu)\
PIXEL_AVG_W(4,cpu); PIXEL_AVG_W(8,cpu); PIXEL_AVG_W(10,cpu); PIXEL_AVG_W(12,cpu); PIXEL_AVG_W(16,cpu); PIXEL_AVG_W(18,cpu); PIXEL_AVG_W(20,cpu);

PIXEL_AVG_WALL(mmx2)
PIXEL_AVG_WALL(cache32_mmx2)
PIXEL_AVG_WALL(cache64_mmx2)
PIXEL_AVG_WALL(cache64_sse2)
PIXEL_AVG_WALL(sse2)
PIXEL_AVG_WALL(cache64_ssse3)
PIXEL_AVG_WALL(avx2)

#define PIXEL_AVG_WTAB(instr, name1, name2, name3, name4, name5)\
static void (* const x264_pixel_avg_wtab_##instr[6])( pixel *, intptr_t, pixel *, intptr_t, pixel *, intptr_t ) =\
{\
    NULL,\
    x264_pixel_avg2_w4_##name1,\
    x264_pixel_avg2_w8_##name2,\
    x264_pixel_avg2_w12_##name3,\
    x264_pixel_avg2_w16_##name4,\
    x264_pixel_avg2_w20_##name5,\
};

#if HIGH_BIT_DEPTH
/* we can replace w12/w20 with w10/w18 as only 9/17 pixels in fact are important */
#define x264_pixel_avg2_w12_mmx2       x264_pixel_avg2_w10_mmx2
#define x264_pixel_avg2_w20_mmx2       x264_pixel_avg2_w18_mmx2
#define x264_pixel_avg2_w12_sse2         x264_pixel_avg2_w10_sse2
#define x264_pixel_avg2_w20_sse2         x264_pixel_avg2_w18_sse2
#define x264_pixel_avg2_w12_avx2         x264_pixel_avg2_w16_avx2
#define x264_pixel_avg2_w20_avx2         x264_pixel_avg2_w18_avx2
#else
/* w16 sse2 is faster than w12 mmx as long as the cacheline issue is resolved */
#define x264_pixel_avg2_w12_cache64_ssse3 x264_pixel_avg2_w16_cache64_ssse3
#define x264_pixel_avg2_w12_cache64_sse2 x264_pixel_avg2_w16_cache64_sse2
#define x264_pixel_avg2_w12_sse3         x264_pixel_avg2_w16_sse3
#define x264_pixel_avg2_w12_sse2         x264_pixel_avg2_w16_sse2
#endif // HIGH_BIT_DEPTH

PIXEL_AVG_WTAB(mmx2, mmx2, mmx2, mmx2, mmx2, mmx2)
#if HIGH_BIT_DEPTH
PIXEL_AVG_WTAB(sse2, mmx2, sse2, sse2, sse2, sse2)
PIXEL_AVG_WTAB(avx2, mmx2, sse2, avx2, avx2, avx2)
#else // !HIGH_BIT_DEPTH
#if ARCH_X86
PIXEL_AVG_WTAB(cache32_mmx2, mmx2, cache32_mmx2, cache32_mmx2, cache32_mmx2, cache32_mmx2)
PIXEL_AVG_WTAB(cache64_mmx2, mmx2, cache64_mmx2, cache64_mmx2, cache64_mmx2, cache64_mmx2)
#endif
PIXEL_AVG_WTAB(sse2, mmx2, mmx2, sse2, sse2, sse2)
PIXEL_AVG_WTAB(cache64_sse2, mmx2, cache64_mmx2, cache64_sse2, cache64_sse2, cache64_sse2)
PIXEL_AVG_WTAB(cache64_ssse3, mmx2, cache64_mmx2, cache64_ssse3, cache64_ssse3, cache64_sse2)
PIXEL_AVG_WTAB(cache64_ssse3_atom, mmx2, mmx2, cache64_ssse3, cache64_ssse3, sse2)
PIXEL_AVG_WTAB(avx2, mmx2, mmx2, sse2, sse2, avx2)
#endif // HIGH_BIT_DEPTH

#define MC_COPY_WTAB(instr, name1, name2, name3)\
static void (* const x264_mc_copy_wtab_##instr[5])( pixel *, intptr_t, pixel *, intptr_t, int ) =\
{\
    NULL,\
    x264_mc_copy_w4_##name1,\
    x264_mc_copy_w8_##name2,\
    NULL,\
    x264_mc_copy_w16_##name3,\
};

MC_COPY_WTAB(mmx,mmx,mmx,mmx)
#if HIGH_BIT_DEPTH
MC_COPY_WTAB(sse,mmx,sse,sse)
MC_COPY_WTAB(avx,mmx,sse,avx)
#else
MC_COPY_WTAB(sse,mmx,mmx,sse)
#endif

#define MC_WEIGHT_WTAB(function, instr, name1, name2, w12version)\
    static void (* x264_mc_##function##_wtab_##instr[6])( pixel *, intptr_t, pixel *, intptr_t, const x264_weight_t *, int ) =\
{\
    x264_mc_##function##_w4_##name1,\
    x264_mc_##function##_w4_##name1,\
    x264_mc_##function##_w8_##name2,\
    x264_mc_##function##_w##w12version##_##instr,\
    x264_mc_##function##_w16_##instr,\
    x264_mc_##function##_w20_##instr,\
};

#if HIGH_BIT_DEPTH
MC_WEIGHT_WTAB(weight,mmx2,mmx2,mmx2,12)
MC_WEIGHT_WTAB(offsetadd,mmx2,mmx2,mmx2,12)
MC_WEIGHT_WTAB(offsetsub,mmx2,mmx2,mmx2,12)
MC_WEIGHT_WTAB(weight,sse2,mmx2,sse2,12)
MC_WEIGHT_WTAB(offsetadd,sse2,mmx2,sse2,16)
MC_WEIGHT_WTAB(offsetsub,sse2,mmx2,sse2,16)

static void x264_weight_cache_mmx2( x264_t *h, x264_weight_t *w )
{
    if( w->i_scale == 1<<w->i_denom )
    {
        if( w->i_offset < 0 )
            w->weightfn = h->mc.offsetsub;
        else
            w->weightfn = h->mc.offsetadd;
        for( int i = 0; i < 8; i++ )
            w->cachea[i] = abs(w->i_offset<<(BIT_DEPTH-8));
        return;
    }
    w->weightfn = h->mc.weight;
    int den1 = 1<<w->i_denom;
    int den2 = w->i_scale<<1;
    int den3 = 1+(w->i_offset<<(BIT_DEPTH-8+1));
    for( int i = 0; i < 8; i++ )
    {
        w->cachea[i] = den1;
        w->cacheb[i] = i&1 ? den3 : den2;
    }
}
#else
MC_WEIGHT_WTAB(weight,mmx2,mmx2,mmx2,12)
MC_WEIGHT_WTAB(offsetadd,mmx2,mmx2,mmx2,12)
MC_WEIGHT_WTAB(offsetsub,mmx2,mmx2,mmx2,12)
MC_WEIGHT_WTAB(weight,sse2,mmx2,sse2,16)
MC_WEIGHT_WTAB(offsetadd,sse2,mmx2,mmx2,16)
MC_WEIGHT_WTAB(offsetsub,sse2,mmx2,mmx2,16)
MC_WEIGHT_WTAB(weight,ssse3,ssse3,ssse3,16)
MC_WEIGHT_WTAB(weight,avx2,ssse3,avx2,16)

static void x264_weight_cache_mmx2( x264_t *h, x264_weight_t *w )
{
    int i;
    int16_t den1;

    if( w->i_scale == 1<<w->i_denom )
    {
        if( w->i_offset < 0 )
            w->weightfn = h->mc.offsetsub;
        else
            w->weightfn = h->mc.offsetadd;
        memset( w->cachea, abs(w->i_offset), sizeof(w->cachea) );
        return;
    }
    w->weightfn = h->mc.weight;
    den1 = 1 << (w->i_denom - 1) | w->i_offset << w->i_denom;
    for( i = 0; i < 8; i++ )
    {
        w->cachea[i] = w->i_scale;
        w->cacheb[i] = den1;
    }
}

static void x264_weight_cache_ssse3( x264_t *h, x264_weight_t *w )
{
    int i, den1;
    if( w->i_scale == 1<<w->i_denom )
    {
        if( w->i_offset < 0 )
            w->weightfn = h->mc.offsetsub;
        else
            w->weightfn = h->mc.offsetadd;

        memset( w->cachea, abs( w->i_offset ), sizeof(w->cachea) );
        return;
    }
    w->weightfn = h->mc.weight;
    den1 = w->i_scale << (8 - w->i_denom);
    for( i = 0; i < 8; i++ )
    {
        w->cachea[i] = den1;
        w->cacheb[i] = w->i_offset;
    }
}
#endif // !HIGH_BIT_DEPTH

#define MC_LUMA(name,instr1,instr2)\
static void mc_luma_##name( pixel *dst,    intptr_t i_dst_stride,\
                            pixel *src[4], intptr_t i_src_stride,\
                            int mvx, int mvy,\
                            int i_width, int i_height, const x264_weight_t *weight )\
{\
    int qpel_idx = ((mvy&3)<<2) + (mvx&3);\
    int offset = (mvy>>2)*i_src_stride + (mvx>>2);\
    pixel *src1 = src[x264_hpel_ref0[qpel_idx]] + offset + ((mvy&3) == 3) * i_src_stride;\
    if( qpel_idx & 5 ) /* qpel interpolation needed */\
    {\
        pixel *src2 = src[x264_hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);\
        x264_pixel_avg_wtab_##instr1[i_width>>2](\
                dst, i_dst_stride, src1, i_src_stride,\
                src2, i_height );\
        if( weight->weightfn )\
            weight->weightfn[i_width>>2]( dst, i_dst_stride, dst, i_dst_stride, weight, i_height );\
    }\
    else if( weight->weightfn )\
        weight->weightfn[i_width>>2]( dst, i_dst_stride, src1, i_src_stride, weight, i_height );\
    else\
        x264_mc_copy_wtab_##instr2[i_width>>2](dst, i_dst_stride, src1, i_src_stride, i_height );\
}

MC_LUMA(mmx2,mmx2,mmx)
MC_LUMA(sse2,sse2,sse)
#if HIGH_BIT_DEPTH
MC_LUMA(avx2,avx2,avx)
#else
#if ARCH_X86
MC_LUMA(cache32_mmx2,cache32_mmx2,mmx)
MC_LUMA(cache64_mmx2,cache64_mmx2,mmx)
#endif
MC_LUMA(cache64_sse2,cache64_sse2,sse)
MC_LUMA(cache64_ssse3,cache64_ssse3,sse)
MC_LUMA(cache64_ssse3_atom,cache64_ssse3_atom,sse)
#endif // !HIGH_BIT_DEPTH

#define GET_REF(name)\
static pixel *get_ref_##name( pixel *dst,   intptr_t *i_dst_stride,\
                              pixel *src[4], intptr_t i_src_stride,\
                              int mvx, int mvy,\
                              int i_width, int i_height, const x264_weight_t *weight )\
{\
    int qpel_idx = ((mvy&3)<<2) + (mvx&3);\
    int offset = (mvy>>2)*i_src_stride + (mvx>>2);\
    pixel *src1 = src[x264_hpel_ref0[qpel_idx]] + offset + ((mvy&3) == 3) * i_src_stride;\
    if( qpel_idx & 5 ) /* qpel interpolation needed */\
    {\
        pixel *src2 = src[x264_hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);\
        x264_pixel_avg_wtab_##name[i_width>>2](\
                dst, *i_dst_stride, src1, i_src_stride,\
                src2, i_height );\
        if( weight->weightfn )\
            weight->weightfn[i_width>>2]( dst, *i_dst_stride, dst, *i_dst_stride, weight, i_height );\
        return dst;\
    }\
    else if( weight->weightfn )\
    {\
        weight->weightfn[i_width>>2]( dst, *i_dst_stride, src1, i_src_stride, weight, i_height );\
        return dst;\
    }\
    else\
    {\
        *i_dst_stride = i_src_stride;\
        return src1;\
    }\
}

GET_REF(mmx2)
GET_REF(sse2)
GET_REF(avx2)
#if !HIGH_BIT_DEPTH
#if ARCH_X86
GET_REF(cache32_mmx2)
GET_REF(cache64_mmx2)
#endif
GET_REF(cache64_sse2)
GET_REF(cache64_ssse3)
GET_REF(cache64_ssse3_atom)
#endif // !HIGH_BIT_DEPTH

#define HPEL(align, cpu, cpuv, cpuc, cpuh)\
void x264_hpel_filter_v_##cpuv( pixel *dst, pixel *src, int16_t *buf, intptr_t stride, intptr_t width);\
void x264_hpel_filter_c_##cpuc( pixel *dst, int16_t *buf, intptr_t width );\
void x264_hpel_filter_h_##cpuh( pixel *dst, pixel *src, intptr_t width );\
static void x264_hpel_filter_##cpu( pixel *dsth, pixel *dstv, pixel *dstc, pixel *src,\
                                    intptr_t stride, int width, int height, int16_t *buf )\
{\
    intptr_t realign = (intptr_t)src & (align-1);\
    src -= realign;\
    dstv -= realign;\
    dstc -= realign;\
    dsth -= realign;\
    width += realign;\
    while( height-- )\
    {\
        x264_hpel_filter_v_##cpuv( dstv, src, buf+16, stride, width );\
        x264_hpel_filter_c_##cpuc( dstc, buf+16, width );\
        x264_hpel_filter_h_##cpuh( dsth, src, width );\
        dsth += stride;\
        dstv += stride;\
        dstc += stride;\
        src  += stride;\
    }\
    x264_sfence();\
}

HPEL(8, mmx2, mmx2, mmx2, mmx2)
#if HIGH_BIT_DEPTH
HPEL(16, sse2, sse2, sse2, sse2)
#else // !HIGH_BIT_DEPTH
HPEL(16, sse2_amd, mmx2, mmx2, sse2)
#if ARCH_X86_64
void x264_hpel_filter_sse2 ( uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, uint8_t *src, intptr_t stride, int width, int height, int16_t *buf );
void x264_hpel_filter_ssse3( uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, uint8_t *src, intptr_t stride, int width, int height, int16_t *buf );
void x264_hpel_filter_avx  ( uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, uint8_t *src, intptr_t stride, int width, int height, int16_t *buf );
void x264_hpel_filter_avx2 ( uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, uint8_t *src, intptr_t stride, int width, int height, int16_t *buf );
#else
HPEL(16, sse2, sse2, sse2, sse2)
HPEL(16, ssse3, ssse3, ssse3, ssse3)
HPEL(16, avx, avx, avx, avx)
HPEL(32, avx2, avx2, avx2, avx2)
#endif
#endif // HIGH_BIT_DEPTH

PLANE_COPY(16, sse)
PLANE_COPY(32, avx)

PLANE_COPY_SWAP(16, ssse3)
PLANE_COPY_SWAP(32, avx2)

#if HIGH_BIT_DEPTH
PLANE_COPY_YUYV(64, sse2)
PLANE_COPY_YUYV(64, avx)
#else
PLANE_COPY_YUYV(32, sse2)
PLANE_COPY_YUYV(32, ssse3)
#endif
PLANE_COPY_YUYV(64, avx2)

PLANE_INTERLEAVE(mmx2)
PLANE_INTERLEAVE(sse2)
#if HIGH_BIT_DEPTH
PLANE_INTERLEAVE(avx)
#endif

#if HAVE_X86_INLINE_ASM
#undef MC_CLIP_ADD
#define MC_CLIP_ADD(s,x)\
do\
{\
    int temp;\
    asm("movd       %0, %%xmm0     \n"\
        "movd       %2, %%xmm1     \n"\
        "paddsw %%xmm1, %%xmm0     \n"\
        "movd   %%xmm0, %1         \n"\
        :"+m"(s), "=&r"(temp)\
        :"m"(x)\
    );\
    s = temp;\
} while( 0 )

#undef MC_CLIP_ADD2
#define MC_CLIP_ADD2(s,x)\
do\
{\
    asm("movd       %0, %%xmm0     \n"\
        "movd       %1, %%xmm1     \n"\
        "paddsw %%xmm1, %%xmm0     \n"\
        "movd   %%xmm0, %0         \n"\
        :"+m"(M32(s))\
        :"m"(M32(x))\
    );\
} while( 0 )
#endif

PROPAGATE_LIST(ssse3)
PROPAGATE_LIST(avx)
PROPAGATE_LIST(avx2)

void x264_mc_init_mmx( int cpu, x264_mc_functions_t *pf )
{
    if( !(cpu&X264_CPU_MMX) )
        return;

    pf->copy_16x16_unaligned = x264_mc_copy_w16_mmx;
    pf->copy[PIXEL_16x16] = x264_mc_copy_w16_mmx;
    pf->copy[PIXEL_8x8]   = x264_mc_copy_w8_mmx;
    pf->copy[PIXEL_4x4]   = x264_mc_copy_w4_mmx;
    pf->integral_init4v = x264_integral_init4v_mmx;
    pf->integral_init8v = x264_integral_init8v_mmx;

    if( !(cpu&X264_CPU_MMX2) )
        return;

    pf->prefetch_fenc_420 = x264_prefetch_fenc_420_mmx2;
    pf->prefetch_fenc_422 = x264_prefetch_fenc_422_mmx2;
    pf->prefetch_ref  = x264_prefetch_ref_mmx2;

    pf->plane_copy_interleave = x264_plane_copy_interleave_mmx2;
    pf->store_interleave_chroma = x264_store_interleave_chroma_mmx2;

    pf->avg[PIXEL_16x16] = x264_pixel_avg_16x16_mmx2;
    pf->avg[PIXEL_16x8]  = x264_pixel_avg_16x8_mmx2;
    pf->avg[PIXEL_8x16]  = x264_pixel_avg_8x16_mmx2;
    pf->avg[PIXEL_8x8]   = x264_pixel_avg_8x8_mmx2;
    pf->avg[PIXEL_8x4]   = x264_pixel_avg_8x4_mmx2;
    pf->avg[PIXEL_4x16]  = x264_pixel_avg_4x16_mmx2;
    pf->avg[PIXEL_4x8]   = x264_pixel_avg_4x8_mmx2;
    pf->avg[PIXEL_4x4]   = x264_pixel_avg_4x4_mmx2;
    pf->avg[PIXEL_4x2]   = x264_pixel_avg_4x2_mmx2;

    pf->mc_luma = mc_luma_mmx2;
    pf->get_ref = get_ref_mmx2;
    pf->mc_chroma = x264_mc_chroma_mmx2;
    pf->hpel_filter = x264_hpel_filter_mmx2;
    pf->weight = x264_mc_weight_wtab_mmx2;
    pf->weight_cache = x264_weight_cache_mmx2;
    pf->offsetadd = x264_mc_offsetadd_wtab_mmx2;
    pf->offsetsub = x264_mc_offsetsub_wtab_mmx2;

    pf->frame_init_lowres_core = x264_frame_init_lowres_core_mmx2;

    if( cpu&X264_CPU_SSE )
    {
        pf->memcpy_aligned  = x264_memcpy_aligned_sse;
        pf->memzero_aligned = x264_memzero_aligned_sse;
        pf->plane_copy = x264_plane_copy_sse;
    }

#if HIGH_BIT_DEPTH
#if ARCH_X86 // all x86_64 cpus with cacheline split issues use sse2 instead
    if( cpu&(X264_CPU_CACHELINE_32|X264_CPU_CACHELINE_64) )
        pf->frame_init_lowres_core = x264_frame_init_lowres_core_cache32_mmx2;
#endif

    if( !(cpu&X264_CPU_SSE2) )
        return;

    pf->frame_init_lowres_core = x264_frame_init_lowres_core_sse2;

    pf->load_deinterleave_chroma_fenc = x264_load_deinterleave_chroma_fenc_sse2;
    pf->load_deinterleave_chroma_fdec = x264_load_deinterleave_chroma_fdec_sse2;

    pf->plane_copy_interleave   = x264_plane_copy_interleave_sse2;
    pf->plane_copy_deinterleave = x264_plane_copy_deinterleave_sse2;
    pf->plane_copy_deinterleave_yuyv = x264_plane_copy_deinterleave_yuyv_sse2;

    if( cpu&X264_CPU_SSE2_IS_FAST )
    {
        pf->get_ref = get_ref_sse2;
        pf->mc_luma = mc_luma_sse2;
        pf->hpel_filter = x264_hpel_filter_sse2;
    }

    pf->integral_init4v = x264_integral_init4v_sse2;
    pf->integral_init8v = x264_integral_init8v_sse2;
    pf->mbtree_propagate_cost = x264_mbtree_propagate_cost_sse2;
    pf->store_interleave_chroma = x264_store_interleave_chroma_sse2;
    pf->offsetadd = x264_mc_offsetadd_wtab_sse2;
    pf->offsetsub = x264_mc_offsetsub_wtab_sse2;

    if( cpu&X264_CPU_SSE2_IS_SLOW )
        return;

    pf->avg[PIXEL_16x16] = x264_pixel_avg_16x16_sse2;
    pf->avg[PIXEL_16x8]  = x264_pixel_avg_16x8_sse2;
    pf->avg[PIXEL_8x16]  = x264_pixel_avg_8x16_sse2;
    pf->avg[PIXEL_8x8]   = x264_pixel_avg_8x8_sse2;
    pf->avg[PIXEL_8x4]   = x264_pixel_avg_8x4_sse2;
    pf->avg[PIXEL_4x16]  = x264_pixel_avg_4x16_sse2;
    pf->avg[PIXEL_4x8]   = x264_pixel_avg_4x8_sse2;
    pf->avg[PIXEL_4x4]   = x264_pixel_avg_4x4_sse2;
    pf->avg[PIXEL_4x2]   = x264_pixel_avg_4x2_sse2;

    pf->copy[PIXEL_16x16] = x264_mc_copy_w16_aligned_sse;
    pf->weight = x264_mc_weight_wtab_sse2;

    if( !(cpu&X264_CPU_STACK_MOD4) )
        pf->mc_chroma = x264_mc_chroma_sse2;

    if( !(cpu&X264_CPU_SSSE3) )
        return;

    pf->frame_init_lowres_core = x264_frame_init_lowres_core_ssse3;
    pf->plane_copy_swap = x264_plane_copy_swap_ssse3;
    pf->plane_copy_deinterleave_v210 = x264_plane_copy_deinterleave_v210_ssse3;
    pf->mbtree_propagate_list = x264_mbtree_propagate_list_ssse3;
    pf->mbtree_fix8_pack      = x264_mbtree_fix8_pack_ssse3;
    pf->mbtree_fix8_unpack    = x264_mbtree_fix8_unpack_ssse3;

    if( !(cpu&(X264_CPU_SLOW_SHUFFLE|X264_CPU_SLOW_ATOM|X264_CPU_SLOW_PALIGNR)) )
        pf->integral_init4v = x264_integral_init4v_ssse3;

    if( !(cpu&X264_CPU_AVX) )
        return;

    pf->frame_init_lowres_core = x264_frame_init_lowres_core_avx;
    pf->load_deinterleave_chroma_fenc = x264_load_deinterleave_chroma_fenc_avx;
    pf->load_deinterleave_chroma_fdec = x264_load_deinterleave_chroma_fdec_avx;
    pf->plane_copy_interleave        = x264_plane_copy_interleave_avx;
    pf->plane_copy_deinterleave      = x264_plane_copy_deinterleave_avx;
    pf->plane_copy_deinterleave_yuyv = x264_plane_copy_deinterleave_yuyv_avx;
    pf->plane_copy_deinterleave_v210 = x264_plane_copy_deinterleave_v210_avx;
    pf->store_interleave_chroma      = x264_store_interleave_chroma_avx;
    pf->copy[PIXEL_16x16]            = x264_mc_copy_w16_aligned_avx;

    if( !(cpu&X264_CPU_STACK_MOD4) )
        pf->mc_chroma = x264_mc_chroma_avx;

    if( cpu&X264_CPU_XOP )
        pf->frame_init_lowres_core = x264_frame_init_lowres_core_xop;

    if( cpu&X264_CPU_AVX2 )
    {
        pf->mc_luma = mc_luma_avx2;
        pf->load_deinterleave_chroma_fdec = x264_load_deinterleave_chroma_fdec_avx2;
        pf->plane_copy_deinterleave_v210 = x264_plane_copy_deinterleave_v210_avx2;
    }

    if( cpu&X264_CPU_AVX512 )
    {
        pf->plane_copy_deinterleave_v210 = x264_plane_copy_deinterleave_v210_avx512;
    }
#else // !HIGH_BIT_DEPTH

#if ARCH_X86 // all x86_64 cpus with cacheline split issues use sse2 instead
    if( cpu&X264_CPU_CACHELINE_32 )
    {
        pf->mc_luma = mc_luma_cache32_mmx2;
        pf->get_ref = get_ref_cache32_mmx2;
        pf->frame_init_lowres_core = x264_frame_init_lowres_core_cache32_mmx2;
    }
    else if( cpu&X264_CPU_CACHELINE_64 )
    {
        pf->mc_luma = mc_luma_cache64_mmx2;
        pf->get_ref = get_ref_cache64_mmx2;
        pf->frame_init_lowres_core = x264_frame_init_lowres_core_cache32_mmx2;
    }
#endif

    if( !(cpu&X264_CPU_SSE2) )
        return;

    pf->integral_init4v = x264_integral_init4v_sse2;
    pf->integral_init8v = x264_integral_init8v_sse2;
    pf->hpel_filter = x264_hpel_filter_sse2_amd;
    pf->mbtree_propagate_cost = x264_mbtree_propagate_cost_sse2;
    pf->plane_copy_deinterleave = x264_plane_copy_deinterleave_sse2;
    pf->plane_copy_deinterleave_yuyv = x264_plane_copy_deinterleave_yuyv_sse2;
    pf->load_deinterleave_chroma_fenc = x264_load_deinterleave_chroma_fenc_sse2;
    pf->load_deinterleave_chroma_fdec = x264_load_deinterleave_chroma_fdec_sse2;
    pf->plane_copy_deinterleave_rgb = x264_plane_copy_deinterleave_rgb_sse2;

    if( !(cpu&X264_CPU_SSE2_IS_SLOW) )
    {
        pf->weight = x264_mc_weight_wtab_sse2;
        if( !(cpu&X264_CPU_SLOW_ATOM) )
        {
            pf->offsetadd = x264_mc_offsetadd_wtab_sse2;
            pf->offsetsub = x264_mc_offsetsub_wtab_sse2;
        }

        pf->copy[PIXEL_16x16] = x264_mc_copy_w16_aligned_sse;
        pf->avg[PIXEL_16x16] = x264_pixel_avg_16x16_sse2;
        pf->avg[PIXEL_16x8]  = x264_pixel_avg_16x8_sse2;
        pf->avg[PIXEL_8x16] = x264_pixel_avg_8x16_sse2;
        pf->avg[PIXEL_8x8]  = x264_pixel_avg_8x8_sse2;
        pf->avg[PIXEL_8x4]  = x264_pixel_avg_8x4_sse2;
        pf->hpel_filter = x264_hpel_filter_sse2;
        pf->frame_init_lowres_core = x264_frame_init_lowres_core_sse2;
        if( !(cpu&X264_CPU_STACK_MOD4) )
            pf->mc_chroma = x264_mc_chroma_sse2;

        if( cpu&X264_CPU_SSE2_IS_FAST )
        {
            pf->store_interleave_chroma = x264_store_interleave_chroma_sse2; // FIXME sse2fast? sse2medium?
            pf->plane_copy_interleave   = x264_plane_copy_interleave_sse2;
            pf->mc_luma = mc_luma_sse2;
            pf->get_ref = get_ref_sse2;
            if( cpu&X264_CPU_CACHELINE_64 )
            {
                pf->mc_luma = mc_luma_cache64_sse2;
                pf->get_ref = get_ref_cache64_sse2;
            }
        }
    }

    if( !(cpu&X264_CPU_SSSE3) )
        return;

    pf->avg[PIXEL_16x16] = x264_pixel_avg_16x16_ssse3;
    pf->avg[PIXEL_16x8]  = x264_pixel_avg_16x8_ssse3;
    pf->avg[PIXEL_8x16]  = x264_pixel_avg_8x16_ssse3;
    pf->avg[PIXEL_8x8]   = x264_pixel_avg_8x8_ssse3;
    pf->avg[PIXEL_8x4]   = x264_pixel_avg_8x4_ssse3;
    pf->avg[PIXEL_4x16]  = x264_pixel_avg_4x16_ssse3;
    pf->avg[PIXEL_4x8]   = x264_pixel_avg_4x8_ssse3;
    pf->avg[PIXEL_4x4]   = x264_pixel_avg_4x4_ssse3;
    pf->avg[PIXEL_4x2]   = x264_pixel_avg_4x2_ssse3;
    pf->plane_copy_swap = x264_plane_copy_swap_ssse3;
    pf->plane_copy_deinterleave_rgb = x264_plane_copy_deinterleave_rgb_ssse3;
    pf->mbtree_propagate_list = x264_mbtree_propagate_list_ssse3;
    pf->mbtree_fix8_pack      = x264_mbtree_fix8_pack_ssse3;
    pf->mbtree_fix8_unpack    = x264_mbtree_fix8_unpack_ssse3;

    if( !(cpu&X264_CPU_SLOW_PSHUFB) )
    {
        pf->load_deinterleave_chroma_fenc = x264_load_deinterleave_chroma_fenc_ssse3;
        pf->load_deinterleave_chroma_fdec = x264_load_deinterleave_chroma_fdec_ssse3;
        pf->plane_copy_deinterleave = x264_plane_copy_deinterleave_ssse3;
        pf->plane_copy_deinterleave_yuyv = x264_plane_copy_deinterleave_yuyv_ssse3;
    }

    if( !(cpu&X264_CPU_SLOW_PALIGNR) )
    {
#if ARCH_X86_64
        if( !(cpu&X264_CPU_SLOW_ATOM) ) /* The 64-bit version is slower, but the 32-bit version is faster? */
#endif
            pf->hpel_filter = x264_hpel_filter_ssse3;
        pf->frame_init_lowres_core = x264_frame_init_lowres_core_ssse3;
    }
    if( !(cpu&X264_CPU_STACK_MOD4) )
        pf->mc_chroma = x264_mc_chroma_ssse3;

    if( cpu&X264_CPU_CACHELINE_64 )
    {
        if( !(cpu&X264_CPU_STACK_MOD4) )
            pf->mc_chroma = x264_mc_chroma_cache64_ssse3;
        pf->mc_luma = mc_luma_cache64_ssse3;
        pf->get_ref = get_ref_cache64_ssse3;
        if( cpu&X264_CPU_SLOW_ATOM )
        {
            pf->mc_luma = mc_luma_cache64_ssse3_atom;
            pf->get_ref = get_ref_cache64_ssse3_atom;
        }
    }

    pf->weight_cache = x264_weight_cache_ssse3;
    pf->weight = x264_mc_weight_wtab_ssse3;

    if( !(cpu&(X264_CPU_SLOW_SHUFFLE|X264_CPU_SLOW_ATOM|X264_CPU_SLOW_PALIGNR)) )
        pf->integral_init4v = x264_integral_init4v_ssse3;

    if( !(cpu&X264_CPU_SSE4) )
        return;

    pf->integral_init4h = x264_integral_init4h_sse4;
    pf->integral_init8h = x264_integral_init8h_sse4;

    if( !(cpu&X264_CPU_AVX) )
        return;

    pf->frame_init_lowres_core = x264_frame_init_lowres_core_avx;
    pf->integral_init8h = x264_integral_init8h_avx;
    pf->hpel_filter = x264_hpel_filter_avx;

    if( !(cpu&X264_CPU_STACK_MOD4) )
        pf->mc_chroma = x264_mc_chroma_avx;

    if( cpu&X264_CPU_XOP )
        pf->frame_init_lowres_core = x264_frame_init_lowres_core_xop;

    if( cpu&X264_CPU_AVX2 )
    {
        pf->hpel_filter = x264_hpel_filter_avx2;
        pf->mc_chroma = x264_mc_chroma_avx2;
        pf->weight = x264_mc_weight_wtab_avx2;
        pf->avg[PIXEL_16x16] = x264_pixel_avg_16x16_avx2;
        pf->avg[PIXEL_16x8]  = x264_pixel_avg_16x8_avx2;
        pf->integral_init8v = x264_integral_init8v_avx2;
        pf->integral_init4v = x264_integral_init4v_avx2;
        pf->integral_init8h = x264_integral_init8h_avx2;
        pf->integral_init4h = x264_integral_init4h_avx2;
        pf->frame_init_lowres_core = x264_frame_init_lowres_core_avx2;
        pf->plane_copy_deinterleave_rgb = x264_plane_copy_deinterleave_rgb_avx2;
    }
#endif // HIGH_BIT_DEPTH

    if( !(cpu&X264_CPU_AVX) )
        return;
    pf->memcpy_aligned  = x264_memcpy_aligned_avx;
    pf->memzero_aligned = x264_memzero_aligned_avx;
    pf->plane_copy = x264_plane_copy_avx;
    pf->mbtree_propagate_cost = x264_mbtree_propagate_cost_avx;
    pf->mbtree_propagate_list = x264_mbtree_propagate_list_avx;

    if( cpu&X264_CPU_FMA4 )
        pf->mbtree_propagate_cost = x264_mbtree_propagate_cost_fma4;

    if( !(cpu&X264_CPU_AVX2) )
        return;
    pf->plane_copy_swap = x264_plane_copy_swap_avx2;
    pf->plane_copy_deinterleave = x264_plane_copy_deinterleave_avx2;
    pf->plane_copy_deinterleave_yuyv = x264_plane_copy_deinterleave_yuyv_avx2;
    pf->load_deinterleave_chroma_fenc = x264_load_deinterleave_chroma_fenc_avx2;
    pf->get_ref = get_ref_avx2;
    pf->mbtree_propagate_cost = x264_mbtree_propagate_cost_avx2;
    pf->mbtree_propagate_list = x264_mbtree_propagate_list_avx2;
    pf->mbtree_fix8_pack      = x264_mbtree_fix8_pack_avx2;
    pf->mbtree_fix8_unpack    = x264_mbtree_fix8_unpack_avx2;

    if( !(cpu&X264_CPU_AVX512) )
        return;
    pf->memcpy_aligned = x264_memcpy_aligned_avx512;
    pf->memzero_aligned = x264_memzero_aligned_avx512;
    pf->mbtree_propagate_cost = x264_mbtree_propagate_cost_avx512;
}
