[Python-Dev] Re: [Python-checkins] python/dist/src/Python ceval.c, 2.383, 2.384

[Armin Rigo]

Hello Raymond,

On Sat, Mar 20, 2004 at 04:14:58PM -0500, Raymond Hettinger wrote:
> > A 2% speed improvement with gcc on low-endian machines.  My guess is
> that this new pattern for NEXTARG() is detected and optimized as a single
> (*short) loading.
> 
> It is possible to verify that guess by looking at the generated
> assembler.

I was too hasty in checking this in.  That guess is actually false.

The speed-up was due (as usual) to random changes in performance when anything
around there changes, and cannot be reliably reproduced.  I cancelled that
change altogether.


Armin