[fpc-pascal]Performance: Free Pascal vs GNU Pascal
Peter Vreman
peter at freepascal.org
Sun Dec 29 17:07:33 CET 2002
>> Look at
>> http://dada.perl.it/shootout/
>
> Thank you for this VALUABLE reference. Let me ask (if I may)...on
> matrix multiplication, which appears to be a pretty clean, simple
> algorithm, why do you suppose Microsoft C (vc, and also vc++) is more
> than three times faster than FPC?
>
The times 0.05 and 0.16 seconds also include startup code initialization.
You need to run the tests for at least 10 seconds to get representive
values.
I guess that the optimizer of VC uses more register variables. Also CSE
and out-of-loop moving of 'static' values are not implemented in FPC.
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