void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, int width){ const int w2= (width+1)>>1; IDWTELEM temp[width >> 1]; const int w_l= (width>>1); const int w_r= w2 - 1; int i; { // Lift 0 IDWTELEM * const ref = b + w2 - 1; i = 1; b[0] = b[0] - ((W_DM * 2 * ref[1]+W_DO)>>W_DS); asm volatile( "pcmpeqw %%mm7, %%mm7 \n\t" "psllw $15, %%mm7 \n\t" "psrlw $14, %%mm7 \n\t" ::); for(; i<w_l-7; i+=8){ asm volatile( "movq (%1), %%mm2 \n\t" "movq 8(%1), %%mm6 \n\t" "paddw 2(%1), %%mm2 \n\t" "paddw 10(%1), %%mm6 \n\t" "movq %%mm2, %%mm0 \n\t" "movq %%mm6, %%mm4 \n\t" "psraw $1, %%mm2 \n\t" "psraw $1, %%mm6 \n\t" "paddw %%mm0, %%mm2 \n\t" "paddw %%mm4, %%mm6 \n\t" "paddw %%mm7, %%mm2 \n\t" "paddw %%mm7, %%mm6 \n\t" "psraw $2, %%mm2 \n\t" "psraw $2, %%mm6 \n\t" "movq (%0), %%mm0 \n\t" "movq 8(%0), %%mm4 \n\t" "psubw %%mm2, %%mm0 \n\t" "psubw %%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 IDWTELEM * const dst = b+w2; i = 0; for(; i<w_r-7; i+=8){ asm volatile( "movq (%1), %%mm2 \n\t" "movq 8(%1), %%mm6 \n\t" "paddw 2(%1), %%mm2 \n\t" "paddw 10(%1), %%mm6 \n\t" "movq (%0), %%mm0 \n\t" "movq 8(%0), %%mm4 \n\t" "psubw %%mm2, %%mm0 \n\t" "psubw %%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 IDWTELEM * const ref = b+w2 - 1; i = 1; b[0] = b[0] + (((2 * ref[1] + W_BO) + 4 * b[0]) >> W_BS); asm volatile( "psllw $2, %%mm7 \n\t" ::); for(; i<w_l-7; i+=8){ asm volatile( "movq (%1), %%mm0 \n\t" "movq 8(%1), %%mm4 \n\t" "paddw 2(%1), %%mm0 \n\t" "paddw 10(%1), %%mm4 \n\t" "paddw %%mm7, %%mm0 \n\t" "paddw %%mm7, %%mm4 \n\t" "psraw $2, %%mm0 \n\t" "psraw $2, %%mm4 \n\t" "movq (%0), %%mm1 \n\t" "movq 8(%0), %%mm5 \n\t" "paddw %%mm1, %%mm0 \n\t" "paddw %%mm5, %%mm4 \n\t" "psraw $2, %%mm0 \n\t" "psraw $2, %%mm4 \n\t" "paddw %%mm1, %%mm0 \n\t" "paddw %%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 IDWTELEM * const src = b+w2; i = 0; for(; i<w_r-7; i+=8){ asm volatile( "movq 2(%1), %%mm2 \n\t" "movq 10(%1), %%mm6 \n\t" "paddw (%1), %%mm2 \n\t" "paddw 8(%1), %%mm6 \n\t" "movq (%0), %%mm0 \n\t" "movq 8(%0), %%mm4 \n\t" "paddw %%mm2, %%mm0 \n\t" "paddw %%mm6, %%mm4 \n\t" "psraw $1, %%mm2 \n\t" "psraw $1, %%mm6 \n\t" "paddw %%mm0, %%mm2 \n\t" "paddw %%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 & 0x1E) != 0x1E; i-=2){ b[i+1] = temp[i>>1]; b[i] = b[i>>1]; } for (i-=30; i>=0; i-=32){ 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" "punpcklwd (%2), %%mm0 \n\t" "punpcklwd 8(%2), %%mm2 \n\t" "punpcklwd 16(%2), %%mm4 \n\t" "punpcklwd 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" "punpckhwd (%2), %%mm1 \n\t" "punpckhwd 8(%2), %%mm3 \n\t" "punpckhwd 16(%2), %%mm5 \n\t" "punpckhwd 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" ); } } }
void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, int width){ const int w2= (width+1)>>1; IDWTELEM temp[width >> 1]; const int w_l= (width>>1); const int w_r= w2 - 1; int i; {  