hg: jdk/sandbox: 8230565: ZGC: Redesign C2 load barrier to expand on the MachNode level

[chris.hegarty at oracle.com]

Changeset: d376d86b0a01
Author:    eosterlund
Date:      2019-10-09 12:30 +0000
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/d376d86b0a01

8230565: ZGC: Redesign C2 load barrier to expand on the MachNode level
Reviewed-by: pliden, stefank, neliasso
Contributed-by: erik.osterlund at oracle.com, per.liden at oracle.com, stefan.karlsson at oracle.com, nils.eliasson at oracle.com

! src/hotspot/cpu/aarch64/aarch64.ad
! src/hotspot/cpu/aarch64/gc/z/zBarrierSetAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/gc/z/zBarrierSetAssembler_aarch64.hpp
! src/hotspot/cpu/aarch64/gc/z/z_aarch64.ad
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp
! src/hotspot/cpu/aarch64/register_aarch64.hpp
! src/hotspot/cpu/x86/gc/z/zArguments_x86.cpp
! src/hotspot/cpu/x86/gc/z/zBarrierSetAssembler_x86.cpp
! src/hotspot/cpu/x86/gc/z/zBarrierSetAssembler_x86.hpp
! src/hotspot/cpu/x86/gc/z/z_x86_64.ad
! src/hotspot/cpu/x86/x86.ad
! src/hotspot/cpu/x86/x86_64.ad
! src/hotspot/share/adlc/formssel.cpp
! src/hotspot/share/compiler/compilerDirectives.hpp
! src/hotspot/share/gc/shared/c2/barrierSetC2.hpp
! src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.hpp
! src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp
! src/hotspot/share/gc/z/c2/zBarrierSetC2.hpp
! src/hotspot/share/gc/z/zBarrierSetAssembler.hpp
! src/hotspot/share/opto/classes.cpp
! src/hotspot/share/opto/classes.hpp
! src/hotspot/share/opto/compile.cpp
! src/hotspot/share/opto/compile.hpp
! src/hotspot/share/opto/loopnode.cpp
! src/hotspot/share/opto/loopopts.cpp
! src/hotspot/share/opto/machnode.hpp
! src/hotspot/share/opto/matcher.cpp
! src/hotspot/share/opto/memnode.cpp
! src/hotspot/share/opto/memnode.hpp
! src/hotspot/share/opto/node.cpp
! src/hotspot/share/opto/node.hpp
! src/hotspot/share/opto/output.cpp
! src/hotspot/share/opto/output.hpp
! src/hotspot/share/opto/phaseX.cpp