[11u] RFR: 8231085: C2/GC: Better GC-interface for expanding clone

[Hohensee, Paul]

Ok. Still a tiny skipped change.

Paul

On 10/23/19, 7:30 AM, "hotspot-compiler-dev on behalf of Roman Kennke" <hotspot-compiler-dev-bounces at openjdk.java.net on behalf of rkennke at redhat.com> wrote:

    I would like to backport the recent GC interface for expanding clones to
    jdk11u. This is a prerequisite to backport related Shenandoah changes to
    11u without making a mess.
    
    The change differs from the original jdk14 change because it basically
    skips the intermediate GC interface for the same thing that's been
    introduced in jdk12. This one wholly replaces that.
    
    Bug:
    https://bugs.openjdk.java.net/browse/JDK-8231085
    Original webrev:
    http://cr.openjdk.java.net/~rkennke/JDK-8231085/webrev.00/
    
    JDK11u webrev:
    http://cr.openjdk.java.net/~rkennke/JDK-8231085/webrev.00.jdk11u/
    
    Testing: tier1 and tier2 no regressions
    
    Good?
    
    Roman