RFR(M): 8223051: support loops with long (64b) trip counts

[Tobias Hartmann]

On 25.08.20 07:23, John Rose wrote:
> Putting these together, and choosing a round number
> which prioritizes concern (b) by moving closer to the
> limit of (a), if I had one more run to do I’d choose
> -XX: StressLongCountedLoop=20000000.
> 
> If I were to do multiple runs, I might choose vary that
> stress parameter by adding and subtracting a couple
> of zeroes:
> 
> -XX: StressLongCountedLoop=200000
> -XX: StressLongCountedLoop=2000000
> -XX: StressLongCountedLoop=20000000
> -XX: StressLongCountedLoop=200000000
> -XX: StressLongCountedLoop=2000000000

Okay, thanks, I'll run some more testing with these values. Will report back once it finished.

> If any of those runs kicks out a bug or other suspicious behavior,
> it should be added to a permanent test list.

Earlier runs with 1 and 4294967295 already found bugs. I think we should add a selection of stress
values to higher CI tiers.

Best regards,
Tobias