Request for review(M): 6964776: c2 should ensure the polling page is reachable on 64 bit

[Tom Rodriguez]

I think this looks good.  Could you put a small comment on use the using directive to note that it's there to reexport the other testl variants hidden by the override?

tom

On Mar 25, 2011, at 12:34 PM, Igor Veresov wrote:

> C1 and C2 could only use rip-relative addressing when emitting the page-polling code, which limited the distance from the code cache to the polling page is more than 2G (doesn't fit in a signed 32bit displacement). The solution in this case is to materialize the absolute pointer to the polling page in a register first, as we do on SPARC.
> 
> Webrev: http://cr.openjdk.java.net/~iveresov/6964776/webrev.00/
> 
> Thanks,
> igor