Three-Operand Instructions
From CPUDev Wiki
Two-operand instructions are generally instructions of the c := a <op> b form, that is the output is stored in an explicitly specified register.
Advantages
- Moves sometimes needed less often - When an operation like c := a + b is encountered, it can be directly encoded in one instruction.
Disadvantages
- Longer instruction size - Having only two instead of three operands in an instruction would save space that is used for the third operand.
