hg: shenandoah/jdk9/hotspot: 4 new changesets

[roman at kennke.org]

Changeset: ae916b1609f5
Author:    rkennke
Date:      2016-04-05 19:03 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/ae916b1609f5

Don't initialize GCLABs when UseTLABs is turned off.

! src/share/vm/gc/shenandoah/shenandoahHeap.cpp

Changeset: 5997ed83ef9d
Author:    rkennke
Date:      2016-04-05 19:03 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/5997ed83ef9d

Don't load object size twice when evacuating objects.

! src/share/vm/gc/shenandoah/shenandoahHeap.hpp
! src/share/vm/gc/shenandoah/shenandoahHeap.inline.hpp

Changeset: 57f9d1f1a1b1
Author:    rkennke
Date:      2016-04-05 19:15 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/57f9d1f1a1b1

Avoid updating refs and marking when object is already marked. Avoid double loads and null-checks during marking.

! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.cpp
! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.inline.hpp
! src/share/vm/gc/shenandoah/shenandoahHeap.hpp

Changeset: 8c5226ea2dc6
Author:    rkennke
Date:      2016-04-05 19:18 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/8c5226ea2dc6

Merge