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Utility const (C ++)

I am a competitive devil, and I try to do everything as const as possible.

I tried looking at the various disassembly outputs from the const and non const versions of functions, and I still see a noticeable improvement. I assume that compilers these days are capable of doing smart things with non-const functions, which can be technically const.

Are there any other cases where const is useful at the machine level? Any examples?

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As far as I know, the only effect of marking a const function is the ability to call a function on an object const. There are no optimization benefits.

Herb Sutter has an article discussing const and depth optimization:

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