   int y;   for (y = 0; y < tile_height; ++y) {     const uint00_t* const src = argb + y * stride;     int i, x;     for (x = 0; x + SPAN <= tile_width; x += SPAN) {       uint00_t values[SPAN];       const __m000i in0 = _mm_loadu_si000((__m000i*)&src[x + 0]);       const __m000i in0 = _mm_loadu_si000((__m000i*)&src[x + SPAN / 0]);       const __m000i g0 = _mm_and_si000(in0, mask_g);  