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Subject: Re: Reverse Bitboards

Author: Matt Taylor

Date: 08:16:03 01/17/03

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On January 17, 2003 at 09:58:53, Bas Hamstra wrote:

>On January 17, 2003 at 09:51:37, Sander de Zoete wrote:
>
>>On January 16, 2003 at 04:23:16, Tony Werten wrote:
>>
>>>On January 15, 2003 at 05:21:49, Gerd Isenberg wrote:
>>>
>>>>
>>>>I don't know whether Borland Cplusplus supports inline assembly, and if, also
>>>>the MMX-instructions. With MSC one must install the processor pack, to use MMX
>>>>or P4s SSE2 instructions. What is MAJC?
>>>
>>>Delphi 6 supports MMX upcodes, with Delphi 5 you have to use db directives ( you
>>>don't want that ) I assume CBuilder does the same.
>>>
>>>Tony
>>
>>Hi Tony,
>>
>>I still have to try this, but I think it will, because Bas is trying it too.
>
>I have played a bit with MMX asm but I could not get it to work faster than the
>standard C 64 bit routines. I was only trying basic operations like shifts etc.
>But it certainly works in the BCB gui.

I think the winning combination will be a mixture -- some integer computation,
some SIMD computation.

Of course if AMD/Intel would make SIMD generally worthwhile by using a 128-bit
datapath inside their CPUs and actually doing the computations in parallel, we
wouldn't be having this discussion.

-Matt



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