Re: Compiler optimisation

From: Atmapuri (janez.makovsek_at_usa.net)
Date: 01/24/05 

Date: Mon, 24 Jan 2005 10:40:31 +0100

Hi!

VC++6 is also a "little" out of date. It is Intels Fortan
and C++ compiler that can beat Delphi 5-10x (not %)
in floating point and integer math that uses arrays.
(Because of SSE and MMX and a lot of other
array processing related optimizations).

The only are where Delphi is still "in class"
is string processing and object field access <g>

Write me any loop that works on arrays float
or integer an I can show you the code and performance.

If you can find an Asm code that can do better
in 3 days from what Intel does in seconds.
I would be impressed.

Regards!
Atmapuri

"Captain Jake" <jake[nospam]@jsnewsreader.com> wrote in message
news:41f26de8$1@newsgroups.borland.com...
> Dejan Stankovic <dejanDotStankovic@altium.comDOTau> wrote in message
> <41f0af83$1@newsgroups.borland.com>
> > > You are quite mistaken. Optimized Delphi code runs at roughly 80-90%
of the
> > > speed of optimized VC++ code (except for heavy floating point code).
It
> > > wouldn't have that kind of speed if it had few optimizations, because
I know
> > > that the VC++ compile had quite a few optimizations.
> >
> > That is based on your experience and feeling and doesn't mean that was
> > result of optimizations.
>
> Feelings had nothing to do with it. In JCEC, contestants wrote code for
> Delphi 5 ( or 6, I don't remember which) and VC++ 6. Both sets of code
were
> compiled with optimizations on and the resulting code run several times
and
> the times averaged out, to improve the quality of the estimate. Google for
> Jake's Code Efficiency Challenge. There was nothing subjective about this
at
> all. <y personal feelings and experience had absolutely nothing to do with
it.
>
> --
> ***Free Your Mind***
>
> Posted with JSNewsreader-BETA 0.9.4.369
>
>

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