In my opinion performance optimization should be taught from the ground up, rather than with lists of "performance rules." I found learning this stuff that a s

In my opinion performance optimization should be taught from the ground up, rather than with lists of "performance rules." I found learning this stuff that a solid mental model of the compute resources available (registers, cache) and the paranoia of a compiler (correctness) often made it easier to write fast code. With a good mental model, rather than memorizing rules, one can just walk through the code and re-derive them from first principles. I also find visualization to be extremely important in this domain: https://jott.live/html/mm_impl_anim https://jott.live/html/mm_impl_anim