Note that games are based on main loops + events, for which JITs are optimized, while compilers are typically single run-to-completion, for which JITs aren't.

Note that games are based on main loops + events, for which JITs are optimized, while compilers are typically single run-to-completion, for which JITs aren't. So this might be a very different performance profile. *edit* I had initially written "single-pass", but in the context of a compiler, that's ambiguous.