Another approach is to use a `volatile` function pointer: https://www.godbolt.org/z/e6GM93 https://www.godbolt.org/z/e6GM93 -- That way you get to keep other op

Another approach is to use a `volatile` function pointer: https://www.godbolt.org/z/e6GM93 https://www.godbolt.org/z/e6GM93 -- That way you get to keep other optimizations from `-O3` without inlining the function call itself.