[Python-Dev] Building a Faster Python (original) (raw)

martin at v.loewis.de martin at v.loewis.de
Mon Jul 22 14:24:01 CEST 2013

Quoting Steve Dower <Steve.Dower at microsoft.com>:

As a Windows user, it makes me wonder if compiling with the latest version of the Microsoft compiler would improve things similarly? I'd expect to see some improvement, based solely on the bugs fixed recently by the optimizer team. No idea how much, but I know that Martin builds with PGO, and that's also been improved recently.

I would not expect to see any improvement, unfortunately. I used to build with PGO, but the recent VS releases miscompiled code, which was very hard to track down. So PGO has lost in my view for at least 3 VS releases :-(

(Though updating project files to that is almost certainly a bigger project than the gcc update.) No idea what the gcc update involved, but this is only accurate if it took less than two minutes :-) I've upgraded the CPython projects before and everything worked fine.

Still, we couldn't release 2.7 with any other compiler because of the CRT dependency.

Regards, Martin

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