void ff_snow_horizontal_compose97i_mmx(DWTELEM *b, int width){ const int w2= (width+1)>>1; DWTELEM temp[width >> 1]; const int w_l= (width>>1); const int w_r= w2 - 1; int i; { // Lift 0 DWTELEM * const ref = b + w2 - 1; i = 1; b[0] = b[0] - ((W_DM * 2 * ref[1]+W_DO)>>W_DS); asm volatile( "pcmpeqd %%mm7, %%mm7 \n\t" "pslld $31, %%mm7 \n\t" "psrld $29, %%mm7 \n\t" ::); for(; i<w_l-3; i+=4){ asm volatile( "movq (%1), %%mm2 \n\t" "movq 8(%1), %%mm6 \n\t" "paddd 4(%1), %%mm2 \n\t" "paddd 12(%1), %%mm6 \n\t" "movq %%mm2, %%mm0 \n\t" "movq %%mm6, %%mm4 \n\t" "paddd %%mm2, %%mm2 \n\t" "paddd %%mm6, %%mm6 \n\t" "paddd %%mm0, %%mm2 \n\t" "paddd %%mm4, %%mm6 \n\t" "paddd %%mm7, %%mm2 \n\t" "paddd %%mm7, %%mm6 \n\t" "psrad $3, %%mm2 \n\t" "psrad $3, %%mm6 \n\t" "movq (%0), %%mm0 \n\t" "movq 8(%0), %%mm4 \n\t" "psubd %%mm2, %%mm0 \n\t" "psubd %%mm6, %%mm4 \n\t" "movq %%mm0, (%0) \n\t" "movq %%mm4, 8(%0) \n\t" :: "r"(&b[i]), "r"(&ref[i]) : "memory" ); } snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS); } { // Lift 1 DWTELEM * const dst = b+w2; i = 0; for(; i<w_r-3; i+=4){ asm volatile( "movq (%1), %%mm2 \n\t" "movq 8(%1), %%mm6 \n\t" "paddd 4(%1), %%mm2 \n\t" "paddd 12(%1), %%mm6 \n\t" "movq (%0), %%mm0 \n\t" "movq 8(%0), %%mm4 \n\t" "psubd %%mm2, %%mm0 \n\t" "psubd %%mm6, %%mm4 \n\t" "movq %%mm0, (%0) \n\t" "movq %%mm4, 8(%0) \n\t" :: "r"(&dst[i]), "r"(&b[i]) : "memory" ); } snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS); } { // Lift 2 DWTELEM * const ref = b+w2 - 1; i = 1; b[0] = b[0] + (((2 * ref[1] + W_BO) + 4 * b[0]) >> W_BS); asm volatile( "pslld $1, %%mm7 \n\t" ::); for(; i<w_l-3; i+=4){ asm volatile( "movq (%1), %%mm0 \n\t" "movq 8(%1), %%mm4 \n\t" "paddd 4(%1), %%mm0 \n\t" "paddd 12(%1), %%mm4 \n\t" "paddd %%mm7, %%mm0 \n\t" "paddd %%mm7, %%mm4 \n\t" "psrad $2, %%mm0 \n\t" "psrad $2, %%mm4 \n\t" "movq (%0), %%mm1 \n\t" "movq 8(%0), %%mm5 \n\t" "paddd %%mm1, %%mm0 \n\t" "paddd %%mm5, %%mm4 \n\t" "psrad $2, %%mm0 \n\t" "psrad $2, %%mm4 \n\t" "paddd %%mm1, %%mm0 \n\t" "paddd %%mm5, %%mm4 \n\t" "movq %%mm0, (%0) \n\t" "movq %%mm4, 8(%0) \n\t" :: "r"(&b[i]), "r"(&ref[i]) : "memory" ); } snow_horizontal_compose_liftS_lead_out(i, b, b, ref, width, w_l); } { // Lift 3 DWTELEM * const src = b+w2; i = 0; for(; i<w_r-3; i+=4){ asm volatile( "movq 4(%1), %%mm2 \n\t" "movq 12(%1), %%mm6 \n\t" "paddd (%1), %%mm2 \n\t" "paddd 8(%1), %%mm6 \n\t" "movq (%0), %%mm0 \n\t" "movq 8(%0), %%mm4 \n\t" "paddd %%mm2, %%mm0 \n\t" "paddd %%mm6, %%mm4 \n\t" "psrad $1, %%mm2 \n\t" "psrad $1, %%mm6 \n\t" "paddd %%mm0, %%mm2 \n\t" "paddd %%mm4, %%mm6 \n\t" "movq %%mm2, (%2) \n\t" "movq %%mm6, 8(%2) \n\t" :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i]) : "memory" ); } snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO+1, W_AS); } { snow_interleave_line_header(&i, width, b, temp); for (; (i & 0xE) != 0xE; i-=2){ b[i+1] = temp[i>>1]; b[i] = b[i>>1]; } for (i-=14; i>=0; i-=16){ asm volatile( "movq (%1), %%mm0 \n\t" "movq 8(%1), %%mm2 \n\t" "movq 16(%1), %%mm4 \n\t" "movq 24(%1), %%mm6 \n\t" "movq (%1), %%mm1 \n\t" "movq 8(%1), %%mm3 \n\t" "movq 16(%1), %%mm5 \n\t" "movq 24(%1), %%mm7 \n\t" "punpckldq (%2), %%mm0 \n\t" "punpckldq 8(%2), %%mm2 \n\t" "punpckldq 16(%2), %%mm4 \n\t" "punpckldq 24(%2), %%mm6 \n\t" "movq %%mm0, (%0) \n\t" "movq %%mm2, 16(%0) \n\t" "movq %%mm4, 32(%0) \n\t" "movq %%mm6, 48(%0) \n\t" "punpckhdq (%2), %%mm1 \n\t" "punpckhdq 8(%2), %%mm3 \n\t" "punpckhdq 16(%2), %%mm5 \n\t" "punpckhdq 24(%2), %%mm7 \n\t" "movq %%mm1, 8(%0) \n\t" "movq %%mm3, 24(%0) \n\t" "movq %%mm5, 40(%0) \n\t" "movq %%mm7, 56(%0) \n\t" :: "r"(&b[i]), "r"(&b[i>>1]), "r"(&temp[i>>1]) : "memory" ); } } }