[interpreter] Add field for source position table to byte code array.

src/objects-body-descriptors-inl.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_BODY_DESCRIPTORS_INL_H_
 #define V8_OBJECTS_BODY_DESCRIPTORS_INL_H_
 
 #include "src/objects-body-descriptors.h"
 
 namespace v8 {
@@ skipping 175 matching lines @@
 
   static inline int SizeOf(Map* map, HeapObject* object) {
     return map->instance_size();
   }
 };
 
 
 class BytecodeArray::BodyDescriptor final : public BodyDescriptorBase {
  public:
   static bool IsValidSlot(HeapObject* obj, int offset) {
-    return offset == kConstantPoolOffset || offset == kHandlerTableOffset;
+    return offset >= kConstantPoolOffset &&
+           offset <= kSourcePositionTableOffset;
   }
 
   template <typename ObjectVisitor>
   static inline void IterateBody(HeapObject* obj, int object_size,
                                  ObjectVisitor* v) {
     IteratePointer(obj, kConstantPoolOffset, v);
     IteratePointer(obj, kHandlerTableOffset, v);
+    IteratePointer(obj, kSourcePositionTableOffset, v);
   }
 
   template <typename StaticVisitor>
   static inline void IterateBody(HeapObject* obj, int object_size) {
     Heap* heap = obj->GetHeap();
     IteratePointer<StaticVisitor>(heap, obj, kConstantPoolOffset);
     IteratePointer<StaticVisitor>(heap, obj, kHandlerTableOffset);
+    IteratePointer<StaticVisitor>(heap, obj, kSourcePositionTableOffset);
   }
 
   static inline int SizeOf(Map* map, HeapObject* obj) {
     return reinterpret_cast<BytecodeArray*>(obj)->BytecodeArraySize();
   }
 };
 
 
 class FixedTypedArrayBase::BodyDescriptor final : public BodyDescriptorBase {
  public:
@@ skipping 337 matching lines @@
 
 template <typename ObjectVisitor>
 void HeapObject::IterateBodyFast(InstanceType type, int object_size,
                                  ObjectVisitor* v) {
   BodyDescriptorApply<CallIterateBody, void>(type, this, object_size, v);
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_BODY_DESCRIPTORS_INL_H_