Question

Assume we have TINGEN, a multi-core mobile processor. As writing an application in assembly language for the certain device, we have two selections concerning code optimization.

Option A: Do essential optimization steps before and then write the code.

Option B: First code the program in a normal way and then make necessary changes in order to optimize it.

Can we prefer any approach over the other or both are acceptable?
Kindly help in solving this question.