This is called profile-guided optimization.[0] Slightly off-topic, but even Rust has it, courtesy of LLVM.[1] It doesn't seem very popular unfortunately. Most

This is called profile-guided optimization.[0] Slightly off-topic, but even Rust has it, courtesy of LLVM.[1] It doesn't seem very popular unfortunately. Most web/tech companies are obsessive about capturing user interaction data for UX purposes, but it would be nice if that data could be fed back into a profile-guided optimizer. In theory the compiled WebAssembly output would always be optimized for the latest usage trends, provided there were frequent builds. Depending on the product, it may even be possible to classify users into various high-level categories based on their behavior, and serve them a binary that's optimized for their specific use case. The latter's level of specificity probably wouldn't be worth it though. [0] https://en.wikipedia.org/wiki/Profile-guided_optimization https://en.wikipedia.org/wiki/Profile-guided_optimization [1] https://unhandledexpression.com/2016/04/14/using-llvm-pgo-in-rust/ https://unhandledexpression.com/2016/04/14/using-llvm-pgo-in...