[fpc-pascal] Re: Register variables slowing down floating point operations

[Marcos Douglas]

On Fri, May 13, 2011 at 11:23 AM, Jonas Maebe <jonas.maebe at elis.ugent.be> wrote:
>
> On 13 May 2011, at 16:08, Marcos Douglas wrote:
>
>> So, not to use the option -O in i386?
>> When I compile FPC sources, on Win32 XP SP3, using make, the option is
>> used.
>
> It is used because in general it results in faster code. This is one
> particular example where it doesn't. That does not mean that you should
> never use it.

So, is better use it in all compilations?
Sorry, I don't understand all optimizations of processors (but I can
learn about it). I just want choose the better option for 90% of cases
of algoritms, if that exists.

Thanks,
Marcos Douglas