Tested with "checkasm --test=exrdsp -bench" Before: reorder_pixels_c: 5187.8 reorder_pixels_sse2: 377.0 reorder_pixels_avx2: 331.3 After: reorder_pixels_c: 5181.5 reorder_pixels_sse2: 377.0 reorder_pixels_avx2: 313.8 Signed-off-by: James Almer <jamrial@gmail.com>