[fpc-devel] Patch to speed up Uppercase/Lowercase functions
Marco van de Voort
marcov at stack.nl
Mon Jun 13 09:13:40 CEST 2005
> On 13 jun 2005, at 08:46, Marco van de Voort wrote:
> > There also is jecx, (jeecx ? :-),
> > but I don't know if it is faster than
> > writing it out.
> Pretty much all of those old complex instructions (enter, loop,
> jecxz, xlatb, ...) are slower than the alternatives.
I was thinking about this before I relpied, and knew this was the case for
P5-P6 core. However is this verified/documented for generation 7 CPU's ?
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