[Python-Dev] Python 3.5 on VC14 (original) (raw)

Victor Stinner victor.stinner at gmail.com
Tue Jun 10 22:29:07 CEST 2014

2014-06-10 18:30 GMT+02:00 Steve Dower <Steve.Dower at microsoft.com>:

I ran a quick test with profile-guided optimization (PGO, pronounced "pogo"), which has supposedly been improved since VC9, and saw a very unscientific 20% speed improvement on pybench.py and 10% size reduction in python35.dll. I'm not sure what we used to get from VC9, but it certainly seems worth enabling provided it doesn't break anything. (Interestingly, PGO decided that only 1% of functions needed to be compiled for speed. Not sure if I can find out which ones those are but if anyone's interested I can give it a shot?)

If we upgrade the compiler on Windows, some optimizer options can maybe be enabled again. Previous Visual Studio (2010?) bugs:

Victor

More information about the Python-Dev mailing list