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Subject: Re: Can a Programming Language Cause Engines to be Slow?

Author: Robert Hyatt

Date: 07:03:26 11/15/02

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On November 15, 2002 at 07:40:25, David Rasmussen wrote:

>On November 14, 2002 at 13:06:17, Robert Hyatt wrote:
>
>>
>>You keep saying that.  I keep asking for concrete examples of where the compiler
>>produces incorrect code.  To date you have not posted one single example.
>>Several
>>here at UAB have tested this thing carefully and we could find no bugs in some
>>major codes we run, both integer and floating point codes in fact.
>>
>>Intel is faster than gcc 3.2 for me, by a significant margin.  And they produce
>>_exactly_
>>the same node counts for searches of a billion nodes or more.
>>
>
>Have you tried the -fprofile-arcs and the -fbranch-probabilities options with
>gcc 3.2 ? They gave my bitboard-based engine 30%, which makes it as fast as with
>MSVC and Intel.
>
>/David


Yes...  that was the first thing I checked out...



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