ASM_FMT_I2
op = ASM_OP_PMIN1_U, fmt = ASM_FMT_I2;
op = ASM_OP_UNPACK1_H, fmt = ASM_FMT_I2;
op = ASM_OP_PMAX1_U, fmt = ASM_FMT_I2;
op = ASM_OP_UNPACK1_L, fmt = ASM_FMT_I2;
op = ASM_OP_MIX1_R, fmt = ASM_FMT_I2;
op = ASM_OP_MIX1_L, fmt = ASM_FMT_I2;
op = ASM_OP_PSAD1, fmt = ASM_FMT_I2;
op = ASM_OP_PACK2_USS, fmt = ASM_FMT_I2;
op = ASM_OP_PACK2_SSS, fmt = ASM_FMT_I2;
op = ASM_OP_PMIN2, fmt = ASM_FMT_I2;
op = ASM_OP_UNPACK2_H, fmt = ASM_FMT_I2;
op = ASM_OP_UNPACK2_L, fmt = ASM_FMT_I2;
op = ASM_OP_PMAX2, fmt = ASM_FMT_I2;
op = ASM_OP_MIX2_R, fmt = ASM_FMT_I2;
op = ASM_OP_MIX2_L, fmt = ASM_FMT_I2;
op = ASM_OP_PMPY2_R, fmt = ASM_FMT_I2;
op = ASM_OP_PMPY2_L, fmt = ASM_FMT_I2;
op = ASM_OP_PACK4_SSS, fmt = ASM_FMT_I2;
op = ASM_OP_UNPACK4_H, fmt = ASM_FMT_I2;
op = ASM_OP_UNPACK4_L, fmt = ASM_FMT_I2;
op = ASM_OP_MIX4_R, fmt = ASM_FMT_I2;
op = ASM_OP_MIX4_L, fmt = ASM_FMT_I2;
case ASM_FMT_I2: