RFR (S): 8067014: LinearScan::is_sorted significantly slows down fastdebug builds' performance

[Vladimir Ivanov]

> Well, I'd prefer to explicitly declare type (unless there are numerous
> nested template args).
> But I'm fine with using typedef there.
You could extend GrowableArray<Interval*> instead, but it doesn't worth 
it unless there's a need to introduce new methods.

> Here is updated webrev:
> http://cr.openjdk.java.net/~fzhinkin/8067014/webrev.03/
Looks good. Thanks for taking care of it!

I'll sponsor the change.

Best regards,
Vladimir Ivanov