I want to implement the cpu_relax() function in order to use it
inside loops. However before, I would like to know if the fpc
compiler is doing an optimization of this kind.
I don't think one would you use that "inside a loop" or "to improve branching" but rather inside a
wait-loop where constant polling, without regular pausing, keeps the processor unnecessarily busy.
The operating system has calls for that purpose (e.g. usleep, see
<https://linux.die.net/man/3/usleep>). That is not up to the compiler.
Regards,
Adriaan van Os
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