NN_REG_GPR_BOTH
case NN_REG_GPR_BOTH:
if (swreg_type(dst) == NN_REG_GPR_BOTH)
case NN_REG_GPR_BOTH:
if (swreg_type(dst) == NN_REG_GPR_BOTH)
#define reg_both(x) __enc_swreg((x), NN_REG_GPR_BOTH)