// XOPA - Prefix to encode 0xA in VEX.MMMM of XOP instructions.
XOPA = 22 << Op0Shift,
+ // PD - Prefix code for packed double precision vector floating point
+ // operations performed in the SSE registers.
+ PD = 23 << Op0Shift,
+
+ // T8PD - Prefix before and after 0x0F. Combination of T8 and PD.
+ T8PD = 24 << Op0Shift,
+
+ // TAPD - Prefix before and after 0x0F. Combination of TA and PD.
+ TAPD = 25 << Op0Shift,
+
//===------------------------------------------------------------------===//
// REX_W - REX prefixes are instruction prefixes used in 64-bit mode.
// They are used to specify GPRs and SSE registers, 64-bit operand size,