stub routines and safepoints

[Vladimir Kozlov]

There should be no safepoints in such stubs, compiled code assumes that when 
calls stubs. We don't have safepoint checking in counted loops (increment is 
constant).

Vladimir

Deneau, Tom wrote:
> What are the requirements for safepoint checking in stub routines?
> For instance a stub that loops over a possibly long array of data.
> I didn't notice any such checking in the arraycopy stubs.
> 
> -- Tom
>