[fpc-devel] 64 bit version problem
jonas.maebe at elis.ugent.be
Tue Jan 29 18:18:20 CET 2008
On 29 Jan 2008, at 17:25, Vincent Snijders wrote:
> Miklos Cserzo schreef:
>> Hi Folks,
>> 5) - considering the two versions of a source that will not hit
>> this bug the generated 32-bit executable runs much faster than its
>> 64-bit equivalent. That indicates the general weakness of the 64-
>> bit platform support.
> Yes, that is understable, because for example pointers are twice as
> big, which results in more memory accesses and less pointers in the
> CPU caches and more cache misses.
Also because register variables aren't enabled for x86_64 in 2.2.0
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