> Anecdote: Optimum C blew away all the other C compilers on a magazine benchmark article because it figured out that the benchmark code did nothing and deleted

> Anecdote: Optimum C blew away all the other C compilers on a magazine benchmark article because it figured out that the benchmark code did nothing and deleted it. I remember this problem being discussed in a CPPCon talk a few years ago, and some ways to "trick" the (modern) compilers into not optimising away the benchmark code - I think it was Chandler Carruth's "Tuning C++" talk: https://youtu.be/nXaxk27zwlk https://youtu.be/nXaxk27zwlk