Refactor marking to share embedded pointer visitor.

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10826079

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/incremental-marking.cc

@@ -175,15 +175,6 @@ class IncrementalMarkingMarkingVisitor
     table_.Register(kVisitJSRegExp, &VisitJSRegExp);
   }
 
-  static inline void VisitEmbeddedPointer(Heap* heap, RelocInfo* rinfo) {
-    ASSERT(rinfo->rmode() == RelocInfo::EMBEDDED_OBJECT);
-    Object* target = rinfo->target_object();
-    if (target->NonFailureIsHeapObject()) {
-      heap->mark_compact_collector()->RecordRelocSlot(rinfo, target);
-      MarkObject(heap, target);
-    }
-  }
-
   static inline void VisitCodeTarget(Heap* heap, RelocInfo* rinfo) {
     ASSERT(RelocInfo::IsCodeTarget(rinfo->rmode()));
     Code* target = Code::GetCodeFromTargetAddress(rinfo->target_address());

src/mark-compact.cc

@@ -1078,15 +1078,6 @@ class MarkCompactMarkingVisitor
     heap->mark_compact_collector()->MarkObject(object, mark);
   }
 
-  static inline void VisitEmbeddedPointer(Heap* heap, RelocInfo* rinfo) {
-    ASSERT(rinfo->rmode() == RelocInfo::EMBEDDED_OBJECT);
-    // TODO(mstarzinger): We do not short-circuit cons strings here, verify
-    // that there can be no such embedded pointers and add assertion here.
-    HeapObject* object = HeapObject::cast(rinfo->target_object());
-    heap->mark_compact_collector()->RecordRelocSlot(rinfo, object);
-    MarkObject(heap, object);
-  }
-
   static inline void VisitCodeTarget(Heap* heap, RelocInfo* rinfo) {
     ASSERT(RelocInfo::IsCodeTarget(rinfo->rmode()));
     Code* target = Code::GetCodeFromTargetAddress(rinfo->target_address());

src/objects-visiting-inl.h

@@ -175,6 +175,17 @@ void StaticMarkingVisitor<StaticVisitor>::VisitCodeEntry(
 }
 
 
+template<typename StaticVisitor>
+void StaticMarkingVisitor<StaticVisitor>::VisitEmbeddedPointer(
+    Heap* heap, RelocInfo* rinfo) {
+  ASSERT(rinfo->rmode() == RelocInfo::EMBEDDED_OBJECT);
+  ASSERT(!rinfo->target_object()->IsConsString());
+  HeapObject* object = HeapObject::cast(rinfo->target_object());
+  heap->mark_compact_collector()->RecordRelocSlot(rinfo, object);
+  StaticVisitor::MarkObject(heap, object);
+}
+
+
 template<typename StaticVisitor>
 void StaticMarkingVisitor<StaticVisitor>::VisitGlobalPropertyCell(
     Heap* heap, RelocInfo* rinfo) {

src/objects-visiting.h

@@ -387,6 +387,7 @@ class StaticMarkingVisitor : public StaticVisitorBase {
   }
 
   static inline void VisitCodeEntry(Heap* heap, Address entry_address);
+  static inline void VisitEmbeddedPointer(Heap* heap, RelocInfo* rinfo);
   static inline void VisitGlobalPropertyCell(Heap* heap, RelocInfo* rinfo);
   static inline void VisitDebugTarget(Heap* heap, RelocInfo* rinfo);
   static inline void VisitExternalReference(RelocInfo* rinfo) { }