On Tue, 18 Apr 2017 03:43 pm, Gregory Ewing wrote: > Steve D'Aprano wrote: >> I'm not sure why the Cython devs maintain this is not a JIT compiler. >> Perhaps I misunderstand something. > > A JIT compiler works by observing the actual values taken on > by variables at run time, and if it notices that a particular > variable seems to always have a particular type, it compiles > a special version of the code to handle that type, protected > by appropriate guards.
You seem to be describing a *tracing JIT* compiler. > Cython doesn't do any of that -- it's just a plain, boring, > standard ahead-of-time compiler that goes by the type info > you give it and nothing more. That cannot be the full story, because Cython can optimize some regular, unannotated Python code. -- Steve “Cheer up,” they said, “things could be worse.” So I cheered up, and sure enough, things got worse. -- https://mail.python.org/mailman/listinfo/python-list
