hg: jdk/sandbox: 8213381: Hook to allow GC to inject Node::Ideal() calls

[chris.hegarty at oracle.com]

Changeset: b64514ff68fd
Author:    rkennke
Date:      2018-11-06 23:03 +0100
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/b64514ff68fd

8213381: Hook to allow GC to inject Node::Ideal() calls
Reviewed-by: kvn, eosterlund, roland

! src/hotspot/share/gc/shared/c2/barrierSetC2.hpp
! src/hotspot/share/opto/loopnode.cpp
! src/hotspot/share/opto/loopopts.cpp
! src/hotspot/share/opto/memnode.cpp
! src/hotspot/share/opto/phaseX.cpp
! src/hotspot/share/opto/phaseX.hpp