hg: shenandoah/jdk: [backout] Avoid stub when calling to write-barrier from C2, remove all related code

[roman at kennke.org]

Changeset: d969f26b125b
Author:    rkennke
Date:      2018-11-20 18:27 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/d969f26b125b

[backout] Avoid stub when calling to write-barrier from C2, remove all related code

! src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.hpp
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp
! src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.cpp
! src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.hpp
! src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp
! src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.hpp
! src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp
+ src/hotspot/share/gc/shenandoah/shenandoahBarrierSetAssembler.cpp
! src/hotspot/share/opto/lcm.cpp