[fpc-devel] CompareMem slower in FPC 2.4.4

[José Mejuto]

Hello FPC,

Thursday, June 2, 2011, 7:03:10 PM, you wrote:

>>                              PlainCompare  CompareByte    XCompareByte
>>                              ------------  -----------    ------------
>> Equal arrays 1000 elements   16250 ms      625 ms         656 ms
>> Diff. arrays 1000 elements      62 ms      640 ms         656 ms
>> 
>> Equal arrays 32 elements       547 ms      625 ms         547 ms
>> Diff. arrays 32 elements        62 ms      640 ms          62 ms
>> 
FK> I improved the original CompareByte, please tell me how it works for you.

After a brief test, the same happends with FillByte for blocks of 24
bytes or less, probably 32 when coded in ASM.

FillByte
--------
FillByte 4   : 371
XFillByte 4  : 68

FillByte 16  : 235
XFillByte 16 : 172

FillByte 24  : 235
XFillByte 24 : 228

FillByte 32  : 235
XFillByte 32 : 292

-- 
Best regards,
 José