This actually bothers me. I think the rust performance here is praise worthy. What bothers me is that we piled complexity over complexity at the hardware and co

This actually bothers me. I think the rust performance here is praise worthy. What bothers me is that we piled complexity over complexity at the hardware and compiler levels, and ended up in a situation where you got no way to get a reasonable understanding of how low level code will perform. Nowadays the main reason to program in a "low level" language is that you know that on average the compiler will be able to do a better job because the language doesn't have abstractions that map poorly to the hardware model. But for much of it you can forget about "I know what the hardware is going to do"