hg: jdk8u/jdk8u-dev/hotspot: 8173013: JVMTI tagged object access needs G1 pre-barrier

[ashipile at redhat.com]

Changeset: 767e8338f749
Author:    sangheki
Date:      2017-02-09 19:08 -0800
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/767e8338f749

8173013: JVMTI tagged object access needs G1 pre-barrier
Summary: Add missing G1 pre-barrier at TagObjectCollector::do_entry
Reviewed-by: kbarrett, tschatzl

! src/share/vm/prims/jvmtiTagMap.cpp