"This is only MY OWN opinion."

Complete nonsense, but at least it's your own nonsense! ;-)

Seriously, though: this is a very good illustration of why you at least need to understand Assembler - so that you can tell whether your compiler's done a good job or not; or whether a certain option/setting helps or not; or whether one particular 'C' construct is better or worse than another; etc, etc, etc, ...