[SOLVED]native emitter - why not always enable?

[jickster]

Code: Select all

 On the other hand, the byte code and native emitters support all of Python.  

https://www.kickstarter.com/projects/21 ... ontrollers

If @micropython.native works on ALL of Python, why wouldn’t you enable it by default?

Besides increase in code size, is there a reason why you wouldn’t enable it for everything?

[pythoncoder]

I imagine, of its nature, it needs to be rewritten for each machine architecture. In the days of the kickstarter MicroPython ran on the Pyboard. Ports to other archs came later.

[jickster]

I imagine, of its nature, it needs to be rewritten for each machine architecture. In the days of the kickstarter MicroPython ran on the Pyboard. Ports to other archs came later.

That doesn’t answer my question.

For a given board where @micropython.native is supported, if I don’t care about code size, why wouldn’t I enable @micropython.native permanently?

Seems like the guaranteed speedup is a no brainer If code size isn’t an issue.


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[stijn]

Code size is likely the reason why it's not on by default, so if you don't care about that by all means go native. One caveat I can think of: native emitter probably doesn't see the same amount of usage as the rest of the code because less people use it. As such there could be a higher chance of bugs yet to be discovered.

[pythoncoder]

Those of us who write large programs need to freeze them as bytecode. You can't freeze native code.

[Roberthh]

There was a thread about being able to freeze both native code & viper code. It seemed not too difficult, but seemd not to be on the top priority list and has not been further discussed.

[jickster]

There was a thread about being able to freeze both native code & viper code. It seemed not too difficult, but seemd not to be on the top priority list and has not been further discussed.

If you have a .py and mark some, not all, functions as @micropython.native, is the entire file ineligible to be frozen?

[Roberthh]

If you have a .py and mark some, not all, functions as @micropython.native, is the entire file ineligible to be frozen?

Yes, as far as I can tell. You have split it into two files and import the native section.