hg: jdk/sandbox: 3 new changesets

[chris.hegarty at oracle.com]

Changeset: b9171be3cf2a
Author:    stefank
Date:      2019-07-02 12:10 +0200
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/b9171be3cf2a

8225770: ZGC: C2: Generates on_weak instead of on_strong barriers
Reviewed-by: neliasso, eosterlund

! src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp
! src/hotspot/share/gc/z/c2/zBarrierSetC2.hpp

Changeset: 46579c68f7f4
Author:    stefank
Date:      2019-07-02 12:24 +0200
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/46579c68f7f4

8227083: ZGC: C2: Generates on_weak barrier for WeakCompareAndSwap
Reviewed-by: neliasso, eosterlund

! src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp

Changeset: 9a5e9537fe1a
Author:    stefank
Date:      2019-07-02 12:24 +0200
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/9a5e9537fe1a

8227085: ZGC: Add on_weak load barrier verification
Reviewed-by: eosterlund

! src/hotspot/share/gc/z/zBarrier.inline.hpp
! src/hotspot/share/gc/z/zBarrierSet.inline.hpp