8254573: Shenandoah: Streamline/inline native-LRB entry point

Reviewed-by: shade

Author: rkennke

src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp

@@ -179,39 +179,6 @@ void ShenandoahBarrierSet::on_thread_detach(Thread *thread) {
   }
 }
 
-oop ShenandoahBarrierSet::load_reference_barrier_native(oop obj, oop* load_addr) {
-  return load_reference_barrier_native_impl(obj, load_addr);
-}
-
-oop ShenandoahBarrierSet::load_reference_barrier_native(oop obj, narrowOop* load_addr) {
-  return load_reference_barrier_native_impl(obj, load_addr);
-}
-
-template <class T>
-oop ShenandoahBarrierSet::load_reference_barrier_native_impl(oop obj, T* load_addr) {
-  if (CompressedOops::is_null(obj)) {
-    return NULL;
-  }
-
-  ShenandoahMarkingContext* const marking_context = _heap->marking_context();
-  if (_heap->is_concurrent_weak_root_in_progress() && !marking_context->is_marked(obj)) {
-    Thread* thr = Thread::current();
-    if (thr->is_Java_thread()) {
-      return NULL;
-    } else {
-      return obj;
-    }
-  }
-
-  oop fwd = load_reference_barrier_not_null(obj);
-  if (ShenandoahSelfFixing && load_addr != NULL && fwd != obj) {
-    // Since we are here and we know the load address, update the reference.
-    ShenandoahHeap::cas_oop(fwd, load_addr, obj);
-  }
-
-  return fwd;
-}
-
 void ShenandoahBarrierSet::clone_barrier_runtime(oop src) {
   if (_heap->has_forwarded_objects() || (ShenandoahStoreValEnqueueBarrier && _heap->is_concurrent_mark_in_progress())) {
     clone_barrier(src);

src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.hpp

@@ -93,8 +93,8 @@ class ShenandoahBarrierSet: public BarrierSet {
   template <class T>
   inline oop load_reference_barrier_mutator(oop obj, T* load_addr);
 
-  oop load_reference_barrier_native(oop obj, oop* load_addr);
-  oop load_reference_barrier_native(oop obj, narrowOop* load_addr);
+  template <class T>
+  inline oop load_reference_barrier_native(oop obj, T* load_addr);
 
 private:
   template <class T>
@@ -113,9 +113,6 @@ class ShenandoahBarrierSet: public BarrierSet {
 
   oop load_reference_barrier_impl(oop obj);
 
-  template <class T>
-  oop load_reference_barrier_native_impl(oop obj, T* load_addr);
-
   inline bool need_bulk_update(HeapWord* dst);
 public:
   // Callbacks for runtime accesses.

src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.inline.hpp

@@ -76,6 +76,31 @@ inline oop ShenandoahBarrierSet::load_reference_barrier_mutator(oop obj, T* load
   return fwd;
 }
 
+template <class T>
+inline oop ShenandoahBarrierSet::load_reference_barrier_native(oop obj, T* load_addr) {
+  if (CompressedOops::is_null(obj)) {
+    return NULL;
+  }
+
+  ShenandoahMarkingContext* const marking_context = _heap->marking_context();
+  if (_heap->is_concurrent_weak_root_in_progress() && !marking_context->is_marked(obj)) {
+    Thread* thr = Thread::current();
+    if (thr->is_Java_thread()) {
+      return NULL;
+    } else {
+      return obj;
+    }
+  }
+
+  oop fwd = load_reference_barrier_not_null(obj);
+  if (ShenandoahSelfFixing && load_addr != NULL && fwd != obj) {
+    // Since we are here and we know the load address, update the reference.
+    ShenandoahHeap::cas_oop(fwd, load_addr, obj);
+  }
+
+  return fwd;
+}
+
 inline void ShenandoahBarrierSet::enqueue(oop obj) {
   assert(obj != NULL, "checked by caller");
   assert(_satb_mark_queue_set.is_active(), "only get here when SATB active");