| ; | 
 | ; Copyright (c) 2021, Alliance for Open Media. All rights reserved | 
 | ; | 
 | ; This source code is subject to the terms of the BSD 3-Clause Clear License and the | 
 | ; Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear License was | 
 | ; not distributed with this source code in the LICENSE file, you can obtain it | 
 | ; at aomedia.org/license/software-license/bsd-3-c-c/.  If the Alliance for Open Media Patent | 
 | ; License 1.0 was not distributed with this source code in the PATENTS file, you | 
 | ; can obtain it at aomedia.org/license/patent-license/. | 
 | ; | 
 |  | 
 | ; | 
 |  | 
 |  | 
 | %include "aom_ports/x86_abi_support.asm" | 
 |  | 
 | ;Note: tap3 and tap4 have to be applied and added after other taps to avoid | 
 | ;overflow. | 
 |  | 
 | %macro GET_FILTERS_4 0 | 
 |     mov         rdx, arg(5)                 ;filter ptr | 
 |     mov         rcx, 0x0400040 | 
 |  | 
 |     movdqa      xmm7, [rdx]                 ;load filters | 
 |     pshuflw     xmm0, xmm7, 0b              ;k0 | 
 |     pshuflw     xmm1, xmm7, 01010101b       ;k1 | 
 |     pshuflw     xmm2, xmm7, 10101010b       ;k2 | 
 |     pshuflw     xmm3, xmm7, 11111111b       ;k3 | 
 |     psrldq      xmm7, 8 | 
 |     pshuflw     xmm4, xmm7, 0b              ;k4 | 
 |     pshuflw     xmm5, xmm7, 01010101b       ;k5 | 
 |     pshuflw     xmm6, xmm7, 10101010b       ;k6 | 
 |     pshuflw     xmm7, xmm7, 11111111b       ;k7 | 
 |  | 
 |     punpcklqdq  xmm0, xmm1 | 
 |     punpcklqdq  xmm2, xmm3 | 
 |     punpcklqdq  xmm5, xmm4 | 
 |     punpcklqdq  xmm6, xmm7 | 
 |  | 
 |     movdqa      k0k1, xmm0 | 
 |     movdqa      k2k3, xmm2 | 
 |     movdqa      k5k4, xmm5 | 
 |     movdqa      k6k7, xmm6 | 
 |  | 
 |     movq        xmm6, rcx | 
 |     pshufd      xmm6, xmm6, 0 | 
 |     movdqa      krd, xmm6 | 
 |  | 
 |     pxor        xmm7, xmm7 | 
 |     movdqa      zero, xmm7 | 
 | %endm | 
 |  | 
 | %macro APPLY_FILTER_4 1 | 
 |     punpckldq   xmm0, xmm1                  ;two row in one register | 
 |     punpckldq   xmm6, xmm7 | 
 |     punpckldq   xmm2, xmm3 | 
 |     punpckldq   xmm5, xmm4 | 
 |  | 
 |     punpcklbw   xmm0, zero                  ;unpack to word | 
 |     punpcklbw   xmm6, zero | 
 |     punpcklbw   xmm2, zero | 
 |     punpcklbw   xmm5, zero | 
 |  | 
 |     pmullw      xmm0, k0k1                  ;multiply the filter factors | 
 |     pmullw      xmm6, k6k7 | 
 |     pmullw      xmm2, k2k3 | 
 |     pmullw      xmm5, k5k4 | 
 |  | 
 |     paddsw      xmm0, xmm6                  ;sum | 
 |     movdqa      xmm1, xmm0 | 
 |     psrldq      xmm1, 8 | 
 |     paddsw      xmm0, xmm1 | 
 |     paddsw      xmm0, xmm2 | 
 |     psrldq      xmm2, 8 | 
 |     paddsw      xmm0, xmm5 | 
 |     psrldq      xmm5, 8 | 
 |     paddsw      xmm0, xmm2 | 
 |     paddsw      xmm0, xmm5 | 
 |  | 
 |     paddsw      xmm0, krd                   ;rounding | 
 |     psraw       xmm0, 7                     ;shift | 
 |     packuswb    xmm0, xmm0                  ;pack to byte | 
 |  | 
 | %if %1 | 
 |     movd        xmm1, [rdi] | 
 |     pavgb       xmm0, xmm1 | 
 | %endif | 
 |     movd        [rdi], xmm0 | 
 | %endm | 
 |  | 
 | %macro GET_FILTERS 0 | 
 |     mov         rdx, arg(5)                 ;filter ptr | 
 |     mov         rsi, arg(0)                 ;src_ptr | 
 |     mov         rdi, arg(2)                 ;output_ptr | 
 |     mov         rcx, 0x0400040 | 
 |  | 
 |     movdqa      xmm7, [rdx]                 ;load filters | 
 |     pshuflw     xmm0, xmm7, 0b              ;k0 | 
 |     pshuflw     xmm1, xmm7, 01010101b       ;k1 | 
 |     pshuflw     xmm2, xmm7, 10101010b       ;k2 | 
 |     pshuflw     xmm3, xmm7, 11111111b       ;k3 | 
 |     pshufhw     xmm4, xmm7, 0b              ;k4 | 
 |     pshufhw     xmm5, xmm7, 01010101b       ;k5 | 
 |     pshufhw     xmm6, xmm7, 10101010b       ;k6 | 
 |     pshufhw     xmm7, xmm7, 11111111b       ;k7 | 
 |  | 
 |     punpcklwd   xmm0, xmm0 | 
 |     punpcklwd   xmm1, xmm1 | 
 |     punpcklwd   xmm2, xmm2 | 
 |     punpcklwd   xmm3, xmm3 | 
 |     punpckhwd   xmm4, xmm4 | 
 |     punpckhwd   xmm5, xmm5 | 
 |     punpckhwd   xmm6, xmm6 | 
 |     punpckhwd   xmm7, xmm7 | 
 |  | 
 |     movdqa      k0,   xmm0                  ;store filter factors on stack | 
 |     movdqa      k1,   xmm1 | 
 |     movdqa      k2,   xmm2 | 
 |     movdqa      k3,   xmm3 | 
 |     movdqa      k4,   xmm4 | 
 |     movdqa      k5,   xmm5 | 
 |     movdqa      k6,   xmm6 | 
 |     movdqa      k7,   xmm7 | 
 |  | 
 |     movq        xmm6, rcx | 
 |     pshufd      xmm6, xmm6, 0 | 
 |     movdqa      krd, xmm6                   ;rounding | 
 |  | 
 |     pxor        xmm7, xmm7 | 
 |     movdqa      zero, xmm7 | 
 | %endm | 
 |  | 
 | %macro LOAD_VERT_8 1 | 
 |     movq        xmm0, [rsi + %1]            ;0 | 
 |     movq        xmm1, [rsi + rax + %1]      ;1 | 
 |     movq        xmm6, [rsi + rdx * 2 + %1]  ;6 | 
 |     lea         rsi,  [rsi + rax] | 
 |     movq        xmm7, [rsi + rdx * 2 + %1]  ;7 | 
 |     movq        xmm2, [rsi + rax + %1]      ;2 | 
 |     movq        xmm3, [rsi + rax * 2 + %1]  ;3 | 
 |     movq        xmm4, [rsi + rdx + %1]      ;4 | 
 |     movq        xmm5, [rsi + rax * 4 + %1]  ;5 | 
 | %endm | 
 |  | 
 | %macro APPLY_FILTER_8 2 | 
 |     punpcklbw   xmm0, zero | 
 |     punpcklbw   xmm1, zero | 
 |     punpcklbw   xmm6, zero | 
 |     punpcklbw   xmm7, zero | 
 |     punpcklbw   xmm2, zero | 
 |     punpcklbw   xmm5, zero | 
 |     punpcklbw   xmm3, zero | 
 |     punpcklbw   xmm4, zero | 
 |  | 
 |     pmullw      xmm0, k0 | 
 |     pmullw      xmm1, k1 | 
 |     pmullw      xmm6, k6 | 
 |     pmullw      xmm7, k7 | 
 |     pmullw      xmm2, k2 | 
 |     pmullw      xmm5, k5 | 
 |     pmullw      xmm3, k3 | 
 |     pmullw      xmm4, k4 | 
 |  | 
 |     paddsw      xmm0, xmm1 | 
 |     paddsw      xmm0, xmm6 | 
 |     paddsw      xmm0, xmm7 | 
 |     paddsw      xmm0, xmm2 | 
 |     paddsw      xmm0, xmm5 | 
 |     paddsw      xmm0, xmm3 | 
 |     paddsw      xmm0, xmm4 | 
 |  | 
 |     paddsw      xmm0, krd                   ;rounding | 
 |     psraw       xmm0, 7                     ;shift | 
 |     packuswb    xmm0, xmm0                  ;pack back to byte | 
 | %if %1 | 
 |     movq        xmm1, [rdi + %2] | 
 |     pavgb       xmm0, xmm1 | 
 | %endif | 
 |     movq        [rdi + %2], xmm0 | 
 | %endm | 
 |  | 
 | SECTION .text | 
 |  | 
 | ;void aom_filter_block1d4_v8_sse2 | 
 | ;( | 
 | ;    unsigned char *src_ptr, | 
 | ;    unsigned int   src_pitch, | 
 | ;    unsigned char *output_ptr, | 
 | ;    unsigned int   out_pitch, | 
 | ;    unsigned int   output_height, | 
 | ;    short *filter | 
 | ;) | 
 | globalsym(aom_filter_block1d4_v8_sse2) | 
 | sym(aom_filter_block1d4_v8_sse2): | 
 |     push        rbp | 
 |     mov         rbp, rsp | 
 |     SHADOW_ARGS_TO_STACK 6 | 
 |     SAVE_XMM 7 | 
 |     push        rsi | 
 |     push        rdi | 
 |     push        rbx | 
 |     ; end prolog | 
 |  | 
 |     ALIGN_STACK 16, rax | 
 |     sub         rsp, 16 * 6 | 
 |     %define k0k1 [rsp + 16 * 0] | 
 |     %define k2k3 [rsp + 16 * 1] | 
 |     %define k5k4 [rsp + 16 * 2] | 
 |     %define k6k7 [rsp + 16 * 3] | 
 |     %define krd [rsp + 16 * 4] | 
 |     %define zero [rsp + 16 * 5] | 
 |  | 
 |     GET_FILTERS_4 | 
 |  | 
 |     mov         rsi, arg(0)                 ;src_ptr | 
 |     mov         rdi, arg(2)                 ;output_ptr | 
 |  | 
 |     movsxd      rax, DWORD PTR arg(1)       ;pixels_per_line | 
 |     movsxd      rbx, DWORD PTR arg(3)       ;out_pitch | 
 |     lea         rdx, [rax + rax * 2] | 
 |     movsxd      rcx, DWORD PTR arg(4)       ;output_height | 
 |  | 
 | .loop: | 
 |     movd        xmm0, [rsi]                 ;load src: row 0 | 
 |     movd        xmm1, [rsi + rax]           ;1 | 
 |     movd        xmm6, [rsi + rdx * 2]       ;6 | 
 |     lea         rsi,  [rsi + rax] | 
 |     movd        xmm7, [rsi + rdx * 2]       ;7 | 
 |     movd        xmm2, [rsi + rax]           ;2 | 
 |     movd        xmm3, [rsi + rax * 2]       ;3 | 
 |     movd        xmm4, [rsi + rdx]           ;4 | 
 |     movd        xmm5, [rsi + rax * 4]       ;5 | 
 |  | 
 |     APPLY_FILTER_4 0 | 
 |  | 
 |     lea         rdi, [rdi + rbx] | 
 |     dec         rcx | 
 |     jnz         .loop | 
 |  | 
 |     add rsp, 16 * 6 | 
 |     pop rsp | 
 |     pop rbx | 
 |     ; begin epilog | 
 |     pop rdi | 
 |     pop rsi | 
 |     RESTORE_XMM | 
 |     UNSHADOW_ARGS | 
 |     pop         rbp | 
 |     ret | 
 |  | 
 | ;void aom_filter_block1d8_v8_sse2 | 
 | ;( | 
 | ;    unsigned char *src_ptr, | 
 | ;    unsigned int   src_pitch, | 
 | ;    unsigned char *output_ptr, | 
 | ;    unsigned int   out_pitch, | 
 | ;    unsigned int   output_height, | 
 | ;    short *filter | 
 | ;) | 
 | globalsym(aom_filter_block1d8_v8_sse2) | 
 | sym(aom_filter_block1d8_v8_sse2): | 
 |     push        rbp | 
 |     mov         rbp, rsp | 
 |     SHADOW_ARGS_TO_STACK 6 | 
 |     SAVE_XMM 7 | 
 |     push        rsi | 
 |     push        rdi | 
 |     push        rbx | 
 |     ; end prolog | 
 |  | 
 |     ALIGN_STACK 16, rax | 
 |     sub         rsp, 16 * 10 | 
 |     %define k0 [rsp + 16 * 0] | 
 |     %define k1 [rsp + 16 * 1] | 
 |     %define k2 [rsp + 16 * 2] | 
 |     %define k3 [rsp + 16 * 3] | 
 |     %define k4 [rsp + 16 * 4] | 
 |     %define k5 [rsp + 16 * 5] | 
 |     %define k6 [rsp + 16 * 6] | 
 |     %define k7 [rsp + 16 * 7] | 
 |     %define krd [rsp + 16 * 8] | 
 |     %define zero [rsp + 16 * 9] | 
 |  | 
 |     GET_FILTERS | 
 |  | 
 |     movsxd      rax, DWORD PTR arg(1)       ;pixels_per_line | 
 |     movsxd      rbx, DWORD PTR arg(3)       ;out_pitch | 
 |     lea         rdx, [rax + rax * 2] | 
 |     movsxd      rcx, DWORD PTR arg(4)       ;output_height | 
 |  | 
 | .loop: | 
 |     LOAD_VERT_8 0 | 
 |     APPLY_FILTER_8 0, 0 | 
 |  | 
 |     lea         rdi, [rdi + rbx] | 
 |     dec         rcx | 
 |     jnz         .loop | 
 |  | 
 |     add rsp, 16 * 10 | 
 |     pop rsp | 
 |     pop rbx | 
 |     ; begin epilog | 
 |     pop rdi | 
 |     pop rsi | 
 |     RESTORE_XMM | 
 |     UNSHADOW_ARGS | 
 |     pop         rbp | 
 |     ret | 
 |  | 
 | ;void aom_filter_block1d16_v8_sse2 | 
 | ;( | 
 | ;    unsigned char *src_ptr, | 
 | ;    unsigned int   src_pitch, | 
 | ;    unsigned char *output_ptr, | 
 | ;    unsigned int   out_pitch, | 
 | ;    unsigned int   output_height, | 
 | ;    short *filter | 
 | ;) | 
 | globalsym(aom_filter_block1d16_v8_sse2) | 
 | sym(aom_filter_block1d16_v8_sse2): | 
 |     push        rbp | 
 |     mov         rbp, rsp | 
 |     SHADOW_ARGS_TO_STACK 6 | 
 |     SAVE_XMM 7 | 
 |     push        rsi | 
 |     push        rdi | 
 |     push        rbx | 
 |     ; end prolog | 
 |  | 
 |     ALIGN_STACK 16, rax | 
 |     sub         rsp, 16 * 10 | 
 |     %define k0 [rsp + 16 * 0] | 
 |     %define k1 [rsp + 16 * 1] | 
 |     %define k2 [rsp + 16 * 2] | 
 |     %define k3 [rsp + 16 * 3] | 
 |     %define k4 [rsp + 16 * 4] | 
 |     %define k5 [rsp + 16 * 5] | 
 |     %define k6 [rsp + 16 * 6] | 
 |     %define k7 [rsp + 16 * 7] | 
 |     %define krd [rsp + 16 * 8] | 
 |     %define zero [rsp + 16 * 9] | 
 |  | 
 |     GET_FILTERS | 
 |  | 
 |     movsxd      rax, DWORD PTR arg(1)       ;pixels_per_line | 
 |     movsxd      rbx, DWORD PTR arg(3)       ;out_pitch | 
 |     lea         rdx, [rax + rax * 2] | 
 |     movsxd      rcx, DWORD PTR arg(4)       ;output_height | 
 |  | 
 | .loop: | 
 |     LOAD_VERT_8 0 | 
 |     APPLY_FILTER_8 0, 0 | 
 |     sub         rsi, rax | 
 |  | 
 |     LOAD_VERT_8 8 | 
 |     APPLY_FILTER_8 0, 8 | 
 |     add         rdi, rbx | 
 |  | 
 |     dec         rcx | 
 |     jnz         .loop | 
 |  | 
 |     add rsp, 16 * 10 | 
 |     pop rsp | 
 |     pop rbx | 
 |     ; begin epilog | 
 |     pop rdi | 
 |     pop rsi | 
 |     RESTORE_XMM | 
 |     UNSHADOW_ARGS | 
 |     pop         rbp | 
 |     ret | 
 |  | 
 | ;void aom_filter_block1d4_h8_sse2 | 
 | ;( | 
 | ;    unsigned char  *src_ptr, | 
 | ;    unsigned int    src_pixels_per_line, | 
 | ;    unsigned char  *output_ptr, | 
 | ;    unsigned int    output_pitch, | 
 | ;    unsigned int    output_height, | 
 | ;    short *filter | 
 | ;) | 
 | globalsym(aom_filter_block1d4_h8_sse2) | 
 | sym(aom_filter_block1d4_h8_sse2): | 
 |     push        rbp | 
 |     mov         rbp, rsp | 
 |     SHADOW_ARGS_TO_STACK 6 | 
 |     SAVE_XMM 7 | 
 |     push        rsi | 
 |     push        rdi | 
 |     ; end prolog | 
 |  | 
 |     ALIGN_STACK 16, rax | 
 |     sub         rsp, 16 * 6 | 
 |     %define k0k1 [rsp + 16 * 0] | 
 |     %define k2k3 [rsp + 16 * 1] | 
 |     %define k5k4 [rsp + 16 * 2] | 
 |     %define k6k7 [rsp + 16 * 3] | 
 |     %define krd [rsp + 16 * 4] | 
 |     %define zero [rsp + 16 * 5] | 
 |  | 
 |     GET_FILTERS_4 | 
 |  | 
 |     mov         rsi, arg(0)                 ;src_ptr | 
 |     mov         rdi, arg(2)                 ;output_ptr | 
 |  | 
 |     movsxd      rax, DWORD PTR arg(1)       ;pixels_per_line | 
 |     movsxd      rdx, DWORD PTR arg(3)       ;out_pitch | 
 |     movsxd      rcx, DWORD PTR arg(4)       ;output_height | 
 |  | 
 | .loop: | 
 |     movdqu      xmm0,   [rsi - 3]           ;load src | 
 |  | 
 |     movdqa      xmm1, xmm0 | 
 |     movdqa      xmm6, xmm0 | 
 |     movdqa      xmm7, xmm0 | 
 |     movdqa      xmm2, xmm0 | 
 |     movdqa      xmm3, xmm0 | 
 |     movdqa      xmm5, xmm0 | 
 |     movdqa      xmm4, xmm0 | 
 |  | 
 |     psrldq      xmm1, 1 | 
 |     psrldq      xmm6, 6 | 
 |     psrldq      xmm7, 7 | 
 |     psrldq      xmm2, 2 | 
 |     psrldq      xmm3, 3 | 
 |     psrldq      xmm5, 5 | 
 |     psrldq      xmm4, 4 | 
 |  | 
 |     APPLY_FILTER_4 0 | 
 |  | 
 |     lea         rsi, [rsi + rax] | 
 |     lea         rdi, [rdi + rdx] | 
 |     dec         rcx | 
 |     jnz         .loop | 
 |  | 
 |     add rsp, 16 * 6 | 
 |     pop rsp | 
 |  | 
 |     ; begin epilog | 
 |     pop rdi | 
 |     pop rsi | 
 |     RESTORE_XMM | 
 |     UNSHADOW_ARGS | 
 |     pop         rbp | 
 |     ret | 
 |  | 
 | ;void aom_filter_block1d8_h8_sse2 | 
 | ;( | 
 | ;    unsigned char  *src_ptr, | 
 | ;    unsigned int    src_pixels_per_line, | 
 | ;    unsigned char  *output_ptr, | 
 | ;    unsigned int    output_pitch, | 
 | ;    unsigned int    output_height, | 
 | ;    short *filter | 
 | ;) | 
 | globalsym(aom_filter_block1d8_h8_sse2) | 
 | sym(aom_filter_block1d8_h8_sse2): | 
 |     push        rbp | 
 |     mov         rbp, rsp | 
 |     SHADOW_ARGS_TO_STACK 6 | 
 |     SAVE_XMM 7 | 
 |     push        rsi | 
 |     push        rdi | 
 |     ; end prolog | 
 |  | 
 |     ALIGN_STACK 16, rax | 
 |     sub         rsp, 16 * 10 | 
 |     %define k0 [rsp + 16 * 0] | 
 |     %define k1 [rsp + 16 * 1] | 
 |     %define k2 [rsp + 16 * 2] | 
 |     %define k3 [rsp + 16 * 3] | 
 |     %define k4 [rsp + 16 * 4] | 
 |     %define k5 [rsp + 16 * 5] | 
 |     %define k6 [rsp + 16 * 6] | 
 |     %define k7 [rsp + 16 * 7] | 
 |     %define krd [rsp + 16 * 8] | 
 |     %define zero [rsp + 16 * 9] | 
 |  | 
 |     GET_FILTERS | 
 |  | 
 |     movsxd      rax, DWORD PTR arg(1)       ;pixels_per_line | 
 |     movsxd      rdx, DWORD PTR arg(3)       ;out_pitch | 
 |     movsxd      rcx, DWORD PTR arg(4)       ;output_height | 
 |  | 
 | .loop: | 
 |     movdqu      xmm0,   [rsi - 3]           ;load src | 
 |  | 
 |     movdqa      xmm1, xmm0 | 
 |     movdqa      xmm6, xmm0 | 
 |     movdqa      xmm7, xmm0 | 
 |     movdqa      xmm2, xmm0 | 
 |     movdqa      xmm5, xmm0 | 
 |     movdqa      xmm3, xmm0 | 
 |     movdqa      xmm4, xmm0 | 
 |  | 
 |     psrldq      xmm1, 1 | 
 |     psrldq      xmm6, 6 | 
 |     psrldq      xmm7, 7 | 
 |     psrldq      xmm2, 2 | 
 |     psrldq      xmm5, 5 | 
 |     psrldq      xmm3, 3 | 
 |     psrldq      xmm4, 4 | 
 |  | 
 |     APPLY_FILTER_8 0, 0 | 
 |  | 
 |     lea         rsi, [rsi + rax] | 
 |     lea         rdi, [rdi + rdx] | 
 |     dec         rcx | 
 |     jnz         .loop | 
 |  | 
 |     add rsp, 16 * 10 | 
 |     pop rsp | 
 |  | 
 |     ; begin epilog | 
 |     pop rdi | 
 |     pop rsi | 
 |     RESTORE_XMM | 
 |     UNSHADOW_ARGS | 
 |     pop         rbp | 
 |     ret | 
 |  | 
 | ;void aom_filter_block1d16_h8_sse2 | 
 | ;( | 
 | ;    unsigned char  *src_ptr, | 
 | ;    unsigned int    src_pixels_per_line, | 
 | ;    unsigned char  *output_ptr, | 
 | ;    unsigned int    output_pitch, | 
 | ;    unsigned int    output_height, | 
 | ;    short *filter | 
 | ;) | 
 | globalsym(aom_filter_block1d16_h8_sse2) | 
 | sym(aom_filter_block1d16_h8_sse2): | 
 |     push        rbp | 
 |     mov         rbp, rsp | 
 |     SHADOW_ARGS_TO_STACK 6 | 
 |     SAVE_XMM 7 | 
 |     push        rsi | 
 |     push        rdi | 
 |     ; end prolog | 
 |  | 
 |     ALIGN_STACK 16, rax | 
 |     sub         rsp, 16 * 10 | 
 |     %define k0 [rsp + 16 * 0] | 
 |     %define k1 [rsp + 16 * 1] | 
 |     %define k2 [rsp + 16 * 2] | 
 |     %define k3 [rsp + 16 * 3] | 
 |     %define k4 [rsp + 16 * 4] | 
 |     %define k5 [rsp + 16 * 5] | 
 |     %define k6 [rsp + 16 * 6] | 
 |     %define k7 [rsp + 16 * 7] | 
 |     %define krd [rsp + 16 * 8] | 
 |     %define zero [rsp + 16 * 9] | 
 |  | 
 |     GET_FILTERS | 
 |  | 
 |     movsxd      rax, DWORD PTR arg(1)       ;pixels_per_line | 
 |     movsxd      rdx, DWORD PTR arg(3)       ;out_pitch | 
 |     movsxd      rcx, DWORD PTR arg(4)       ;output_height | 
 |  | 
 | .loop: | 
 |     movdqu      xmm0,   [rsi - 3]           ;load src | 
 |  | 
 |     movdqa      xmm1, xmm0 | 
 |     movdqa      xmm6, xmm0 | 
 |     movdqa      xmm7, xmm0 | 
 |     movdqa      xmm2, xmm0 | 
 |     movdqa      xmm5, xmm0 | 
 |     movdqa      xmm3, xmm0 | 
 |     movdqa      xmm4, xmm0 | 
 |  | 
 |     psrldq      xmm1, 1 | 
 |     psrldq      xmm6, 6 | 
 |     psrldq      xmm7, 7 | 
 |     psrldq      xmm2, 2 | 
 |     psrldq      xmm5, 5 | 
 |     psrldq      xmm3, 3 | 
 |     psrldq      xmm4, 4 | 
 |  | 
 |     APPLY_FILTER_8 0, 0 | 
 |  | 
 |     movdqu      xmm0,   [rsi + 5]           ;load src | 
 |  | 
 |     movdqa      xmm1, xmm0 | 
 |     movdqa      xmm6, xmm0 | 
 |     movdqa      xmm7, xmm0 | 
 |     movdqa      xmm2, xmm0 | 
 |     movdqa      xmm5, xmm0 | 
 |     movdqa      xmm3, xmm0 | 
 |     movdqa      xmm4, xmm0 | 
 |  | 
 |     psrldq      xmm1, 1 | 
 |     psrldq      xmm6, 6 | 
 |     psrldq      xmm7, 7 | 
 |     psrldq      xmm2, 2 | 
 |     psrldq      xmm5, 5 | 
 |     psrldq      xmm3, 3 | 
 |     psrldq      xmm4, 4 | 
 |  | 
 |     APPLY_FILTER_8 0, 8 | 
 |  | 
 |     lea         rsi, [rsi + rax] | 
 |     lea         rdi, [rdi + rdx] | 
 |     dec         rcx | 
 |     jnz         .loop | 
 |  | 
 |     add rsp, 16 * 10 | 
 |     pop rsp | 
 |  | 
 |     ; begin epilog | 
 |     pop rdi | 
 |     pop rsi | 
 |     RESTORE_XMM | 
 |     UNSHADOW_ARGS | 
 |     pop         rbp | 
 |     ret |