[Python-Dev] "Micro-optimisations can speed up CPython"

[Victor Stinner]

Hi,

Thank you for the links.

-            PyObject *value = GETLOCAL(oparg);
+            PyObject *value = GETLOCAL((unsigned)oparg);

Oh, I remember that I proposed to change oparg type to unsigned when
Demur wrote the WORDCODE change. I even wrote a patch, but I got a
segfault and was unable to understand why. It seems like I should try
again, it seems worth it ;-)

Victor

2017-05-29 14:13 GMT+02:00 Antoine Pitrou <solipsis at pitrou.net>:
>
> Hi,
>
> I hope readers won't get bothered by what is mostly a link to blogpost
> (well, two of them :-)), but I suspect there at least 2 or 3 people
> who might be interested in the following analysis:
> https://www.corsix.org/content/compilers-cpython-interpreter-main-loop
> http://www.corsix.org/content/micro-optimisations-can-speed-up-cpython
>
> Regards
>
> Antoine.
>
>
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