[fpc-devel] rdtscp

[Wolf]

Hi,

How do you measure time with a one cycle resolution? EpicTimer clearly 
does not cut it, and from what I gather 
<https://www.intel.com/content/www/us/en/embedded/training/ia-32-ia-64-benchmark-code-execution-paper.html>, 
rdtsc cannot do it either. You need to have a CPU capable of 
understanding rdtscp.

But then, FPC 3.00 does not want to compile this assembly instruction. 
So how do you guys manage to measure it?

Thank you

wolf