static inline void transpose4x4(uint8_t *dst, uint8_t *src, x86_reg dst_stride, x86_reg src_stride){ __asm__ volatile( //FIXME could save 1 instruction if done as 8x4 ... "movd (%1), %%mm0 \n\t" "add %3, %1 \n\t" "movd (%1), %%mm1 \n\t" "movd (%1,%3,1), %%mm2 \n\t" "movd (%1,%3,2), %%mm3 \n\t" "punpcklbw %%mm1, %%mm0 \n\t" "punpcklbw %%mm3, %%mm2 \n\t" "movq %%mm0, %%mm1 \n\t" "punpcklwd %%mm2, %%mm0 \n\t" "punpckhwd %%mm2, %%mm1 \n\t" "movd %%mm0, (%0) \n\t" "add %2, %0 \n\t" "punpckhdq %%mm0, %%mm0 \n\t" "movd %%mm0, (%0) \n\t" "movd %%mm1, (%0,%2,1) \n\t" "punpckhdq %%mm1, %%mm1 \n\t" "movd %%mm1, (%0,%2,2) \n\t" : "+&r" (dst), "+&r" (src) : "r" (dst_stride), "r" (src_stride) : "memory" ); }
static inline void transpose4x4(uint8_t *dst, uint8_t *src, x86_reg dst_stride, x86_reg src_stride){ __asm__ volatile(  