PCKEV_D2_UB(ref1, ref0, ref3, ref2, ref0, ref1);
AVER_UB2_UB(ref4, ref0, ref5, ref1, comp0, comp1);
sad += SAD_UB2_UH(src0, src1, comp0, comp1);
PCKEV_D2_UB(ref1, ref0, ref3, ref2, ref0, ref1);
AVER_UB2_UB(ref4, ref0, ref5, ref1, comp0, comp1);
sad += SAD_UB2_UH(src0, src1, comp0, comp1);