diff -r 044f2ca6ce22 -r 785a12e0f89b src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp	Wed May 29 09:25:20 2019 +0200
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp	Wed May 29 12:01:21 2019 +0200
@@ -34,7 +34,6 @@
 
 #include "gc/shenandoah/shenandoahAllocTracker.hpp"
 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
-#include "gc/shenandoah/shenandoahForwarding.hpp"
 #include "gc/shenandoah/shenandoahClosures.inline.hpp"
 #include "gc/shenandoah/shenandoahCollectionSet.hpp"
 #include "gc/shenandoah/shenandoahCollectorPolicy.hpp"
@@ -139,8 +138,6 @@
 };
 
 jint ShenandoahHeap::initialize() {
-  ShenandoahForwarding::initial_checks();
-
   initialize_heuristics();
 
   //
@@ -876,49 +873,6 @@
   return _free_set->allocate(req, in_new_region);
 }
 
-class ShenandoahMemAllocator : public MemAllocator {
-private:
-  MemAllocator& _initializer;
-public:
-  ShenandoahMemAllocator(MemAllocator& initializer, Klass* klass, size_t word_size, Thread* thread) :
-  MemAllocator(klass, word_size + ShenandoahForwarding::word_size(), thread),
-    _initializer(initializer) {}
-
-protected:
-  virtual HeapWord* mem_allocate(Allocation& allocation) const {
-    HeapWord* result = MemAllocator::mem_allocate(allocation);
-    // Initialize brooks-pointer
-    if (result != NULL) {
-      result += ShenandoahForwarding::word_size();
-      ShenandoahForwarding::initialize(oop(result));
-      assert(! ShenandoahHeap::heap()->in_collection_set(result), "never allocate in targetted region");
-    }
-    return result;
-  }
-
-  virtual oop initialize(HeapWord* mem) const {
-     return _initializer.initialize(mem);
-  }
-};
-
-oop ShenandoahHeap::obj_allocate(Klass* klass, int size, TRAPS) {
-  ObjAllocator initializer(klass, size, THREAD);
-  ShenandoahMemAllocator allocator(initializer, klass, size, THREAD);
-  return allocator.allocate();
-}
-
-oop ShenandoahHeap::array_allocate(Klass* klass, int size, int length, bool do_zero, TRAPS) {
-  ObjArrayAllocator initializer(klass, size, length, do_zero, THREAD);
-  ShenandoahMemAllocator allocator(initializer, klass, size, THREAD);
-  return allocator.allocate();
-}
-
-oop ShenandoahHeap::class_allocate(Klass* klass, int size, TRAPS) {
-  ClassAllocator initializer(klass, size, THREAD);
-  ShenandoahMemAllocator allocator(initializer, klass, size, THREAD);
-  return allocator.allocate();
-}
-
 HeapWord* ShenandoahHeap::mem_allocate(size_t size,
                                         bool*  gc_overhead_limit_was_exceeded) {
   ShenandoahAllocRequest req = ShenandoahAllocRequest::for_shared(size);
@@ -961,15 +915,6 @@
   return NULL;
 }
 
-void ShenandoahHeap::fill_with_dummy_object(HeapWord* start, HeapWord* end, bool zap) {
-  HeapWord* obj = tlab_post_allocation_setup(start);
-  CollectedHeap::fill_with_object(obj, end);
-}
-
-size_t ShenandoahHeap::min_dummy_object_size() const {
-  return CollectedHeap::min_dummy_object_size() + ShenandoahForwarding::word_size();
-}
-
 class ShenandoahConcurrentEvacuateRegionObjectClosure : public ObjectClosure {
 private:
   ShenandoahHeap* const _heap;
@@ -980,7 +925,7 @@
 
   void do_object(oop p) {
     shenandoah_assert_marked(NULL, p);
-    if (oopDesc::equals_raw(p, ShenandoahBarrierSet::resolve_forwarded_not_null(p))) {
+    if (!p->is_forwarded()) {
       _heap->evacuate_object(p, _thread);
     }
   }
@@ -1060,8 +1005,8 @@
 void ShenandoahHeap::trash_humongous_region_at(ShenandoahHeapRegion* start) {
   assert(start->is_humongous_start(), "reclaim regions starting with the first one");
 
-  oop humongous_obj = oop(start->bottom() + ShenandoahForwarding::word_size());
-  size_t size = humongous_obj->size() + ShenandoahForwarding::word_size();
+  oop humongous_obj = oop(start->bottom());
+  size_t size = humongous_obj->size();
   size_t required_regions = ShenandoahHeapRegion::required_regions(size * HeapWordSize);
   size_t index = start->region_number() + required_regions - 1;
 
@@ -1874,13 +1819,6 @@
   set_gc_state_mask(EVACUATION, in_progress);
 }
 
-HeapWord* ShenandoahHeap::tlab_post_allocation_setup(HeapWord* obj) {
-  // Initialize Brooks pointer for the next object
-  HeapWord* result = obj + ShenandoahForwarding::word_size();
-  ShenandoahForwarding::initialize(oop(result));
-  return result;
-}
-
 void ShenandoahHeap::ref_processing_init() {
   assert(_max_workers > 0, "Sanity");
 
@@ -2853,11 +2791,3 @@
     }
   }
 }
-
-size_t ShenandoahHeap::obj_size(oop obj) const {
-  return CollectedHeap::obj_size(obj) + ShenandoahForwarding::word_size();
-}
-
-ptrdiff_t ShenandoahHeap::cell_header_size() const {
-  return ShenandoahForwarding::byte_size();
-}