hg: jdk/jdk: 8246718: ParallelGC should not check for forward objects for copy task queue

[kim.barrett at oracle.com]

Changeset: 474709480635
Author:    kbarrett
Date:      2020-06-09 18:42 -0400
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/474709480635

8246718: ParallelGC should not check for forward objects for copy task queue
Summary: Prefetch task's oop markword and unconditionally push task.
Reviewed-by: tschatzl, eosterlund

! src/hotspot/share/gc/parallel/psPromotionManager.hpp
! src/hotspot/share/gc/parallel/psPromotionManager.inline.hpp