I&#x27;m personally very interested in &quot;non-optimizing optimizers&quot;, essentially lint passes which point out places where you may optimize something without actually making that optimization. The advantage to this is that you get access to a lot of optimizations which would otherwise require you to make a lot of things undefined behavior to make work.<p>An example of this is the escape analysis lint in rust-clippy, which can detect if an allocation via Box&#x2F;Vec&#x2F;String is unnecessary (though right now it only supports one of those and I need to work on it more) and tell you how to remove it.