hg: shenandoah/jdk11: CmpP with null: missing LRB optimization

[rwestrel at redhat.com]

Changeset: fd7d59fadd89
Author:    roland
Date:      2019-08-20 17:43 +0200
URL:       https://hg.openjdk.java.net/shenandoah/jdk11/rev/fd7d59fadd89

CmpP with null: missing LRB optimization

! src/hotspot/share/gc/shared/c2/barrierSetC2.hpp
! src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp
! src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp
! src/hotspot/share/opto/cfgnode.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