[Python-Dev] Byte code arguments from two to one byte: did anyone try this?

[Cesare Di Mauro]

2011/1/31 Terry Reedy <tjreedy at udel.edu>

> On 1/31/2011 5:31 AM, Steven D'Aprano wrote:
>
>> Jurjen N.E. Bos wrote:
>>
>>> I was impressed by the optimizations already in there, but I still
>>> dare to suggest an optimization that from my estimates might shave off
>>> a few cycles, speeding up Python about 5%.
>>> The idea is simple: change the byte code argument values from two
>>> bytes to one.
>>>
>>
>>
>> Interesting. Have you seem Cesare Di Mauro's WPython project, which
>> takes the opposite strategy?
>>
>> http://code.google.com/p/wpython2/
>>
>
> The two strategies could be mixed. Some 'word codes' could consist of a
> bytecode + byte arg, and others a real word code. Maybe WPython does that
> already. Might end up being slower though.
>
> --
>  Terry Jan Reedy


Yes, WPython already does it (
http://wpython2.googlecode.com/files/Beyond%20Bytecode%20-%20A%20Wordcode-based%20Python.pdfpag.7)
, but on average it was faster (pag. 28).

Cesare

>
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