hsx/hotspot-rt/hotspot: 8027616: Off by one error in putback for compressed oops nashorn performance improvement

[Ron Durbin]

Coleen

Thx for fixing this.
The code looks good;

> -----Original Message-----
> From: hotspot-runtime-dev-bounces at openjdk.java.net [mailto:hotspot-runtime-dev-
> bounces at openjdk.java.net] On Behalf Of coleen.phillimore at oracle.com
> Sent: Thursday, October 31, 2013 3:24 PM
> To: hotspot-runtime-dev at openjdk.java.net; serviceability-dev at openjdk.java.net
> Subject: hg: hsx/hotspot-rt/hotspot: 8027616: Off by one error in putback for compressed
> oops nashorn performance improvement
> 
> Changeset: c8fc12209830
> Author:    coleenp
> Date:      2013-10-31 14:11 -0400
> URL:       http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/c8fc12209830
> 
> 8027616: Off by one error in putback for compressed oops nashorn performance improvement
> Summary: Should compare bounds greater than or equal 4G when deciding if shift is needed or
> CDS area + compressed class space are within 4G of each other.
> Reviewed-by: stefank, hseigel, zgu
> 
> ! src/share/vm/memory/metaspace.cpp