Most Efficient way to set Register to 1 or (-1)
- by Bob
I am taking an assembly course now, and the guy who checks our home assignments is a very pedantic old-school optimization freak. For example he deducts 10% if he sees:
mov ax, 0
instead of:
xor ax,ax
even if it's only used once.
I am not a complete beginner in assembly programing but I'm not an optimization expert, so I need your help in something (might be a very stupid question but I'll ask anyway):
if I need to set a register value to 1 or (-1) is it better to use:
mov ax, 1
or do something like:
xor ax,ax
inc ax
I really need a good grade, so I'm trying to get it as optimized as possible. ( I need to optimize both time and code size)
