多选题

Which of the following method(s) could be used to optimize the speed of a program ?

Question

Which of the following method(s) could be used to optimize the speed of a program ?

A. Improve memory access pattern to decrease cache misses.

B. Use special instructions(e.g. vector instructions) to replace compiler generated assembly code.

C. Change an algorithm from recursive implementation to iterative implementation.

D. Loop unwinding.