Which one will execute faster, if (flag==0) or if (0==flag)?

Question

Interview question: Which one will execute faster, if (flag==0) or if (0==flag)? Why?

Answer 1

Well, I am agreeing completely with all said in the comments to the OP, for the exercise sake:

If the compiler is not clever enough (indeed you should not use it) or the optimization is disabled, x == 0 could compile to a native assembly jump if zero instruction, while 0 == x could be a more generic (and costly) comparison of numeric values.

Still, I wouldn't like to work for a boss who thinks in these terms...