def PV_Y : R600RegWithChan<"PV.Y", 254, "Y">;
def PV_Z : R600RegWithChan<"PV.Z", 254, "Z">;
def PV_W : R600RegWithChan<"PV.W", 254, "W">;
+def PS: R600Reg<"PS", 255>;
def PREDICATE_BIT : R600Reg<"PredicateBit", 0>;
def PRED_SEL_OFF: R600Reg<"Pred_sel_off", 0>;
def PRED_SEL_ZERO : R600Reg<"Pred_sel_zero", 2>;