DX
#define DX_MASK DX (0x3f, 0x1f)
{"addpcis", DX(19,2), DX_MASK, POWER9, PPCVLE, {RT, DXD}},
{"subpcis", DX(19,2), DX_MASK, POWER9, PPCVLE, {RT, NDXD}},
R(DX);
R(DX);
PUTREG(DX, dx);
GETREG(DX, dx);