[fpc-devel] 64 Bit / 32 Bit

Florian Klaempfl florian at freepascal.org
Tue Oct 2 10:12:27 CEST 2007

Michael Schnell schrieb:
> Oops ?!?! I supposed that using the much greater count of registers in
> 64 bit mode could speed up any kind of software. 

No. 64 Bit causes also more memory traffic because everything being an
address has the double size. So it depends on the application if 64 bit
is faster or not. And since the 64 bit port of fpc isn't that good yet
as 32 bit one, the advantage of the higher amount of registers is lost
even more easily.

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