hg: jdk8u/jdk8u/hotspot: 4 new changesets

[rob.mckenna at oracle.com]

Changeset: 74370eafeae9
Author:    roland
Date:      2016-07-25 14:31 -0700
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/74370eafeae9

8161147: jvm crashes when -XX:+UseCountedLoopSafepoints is enabled
Summary: don't convert loop with safepoint on the backedge to Counted loop
Reviewed-by: kvn

! src/share/vm/opto/loopnode.cpp
+ test/compiler/loopopts/TestCountedLoopSafepointBackedge.java

Changeset: d55ea2916525
Author:    dpochepk
Date:      2016-07-28 16:09 +0300
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/d55ea2916525

8162603: Unrecognized VM option 'UseCountedLoopSafepoints'
Reviewed-by: kvn

! test/compiler/loopopts/TestCountedLoopSafepointBackedge.java

Changeset: 73ba6fb1df04
Author:    aph
Date:      2016-06-23 17:58 +0000
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/73ba6fb1df04

8157306: Random infrequent null pointer exceptions in javac
Reviewed-by: kvn

! src/share/vm/opto/lcm.cpp

Changeset: 2198ef7e1c17
Author:    kvn
Date:      2016-08-18 14:31 -0700
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/2198ef7e1c17

8162496: missing precedence edge for anti_dependence
Summary: fix Implicit Null Check optimization code.
Reviewed-by: roland, aph

! src/share/vm/opto/block.cpp
! src/share/vm/opto/block.hpp
! src/share/vm/opto/lcm.cpp