Which MSP430 double operand instructions do NOT require a st

Which MSP430 double operand instructions do NOT require a store phase? Why?

Solution

There are six phases for performing instructions:

The store phase stores the result in the destination.

Double operand instruction are:

Notice that result of the CMP instruction doesn\'t need to be stored in any destination register. Hence, CMP is the double operand instruction that doesn\'t require a store phase.

The rest of the instructions above require a store phase.