It's about efficiency. Obviously something like python is real time. Even typescript to javascript can be fairly quick (a la esbuild). However, once we start ta

It's about efficiency. Obviously something like python is real time. Even typescript to javascript can be fairly quick (a la esbuild). However, once we start talking about moving bits around using compiler optimizations, things slow down a lot. This is because there are a lot of steps to going through every bit of assembly to reorganize the code into a machine optimized state. Some quick Google searches get you gory details: https://gcc.gnu.org/onlinedocs/gccint/Tree-SSA.html#Tree-SSA https://gcc.gnu.org/onlinedocs/gccint/Tree-SSA.html#Tree-SSA