RFR (XS): JDK-8058534: Remove HeapRegion::_orig_end

[Kim Barrett]

On Sep 18, 2014, at 4:32 PM, Joseph Provino <joseph.provino at oracle.com> wrote:
> 
> Can I have reviews for the following small change that removes the
> _orig_end member from the HeapRegion class. The information this member
> stores can be easily recalculated on the fly, so it is just a waste of a
> few bytes.
> 
> CR:https://bugs.openjdk.java.net/browse/JDK-8058534
> 
> Webrev:http://cr.openjdk.java.net/~jprovino/8058534/webrev.00/
> 
> Testing: jprt

In the original code, the _orig_end member that is being removed had a descriptive
comment.  That description no longer exists in the changed code.  Maybe that
comment should be moved to the orig_end() accessor?

Otherwise looks good.