Use source position table for unoptimized code.

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 337 matching lines @@
   static inline int SizeOf(Map* map, HeapObject* object) { return kSize; }
 };
 
 
 class Code::BodyDescriptor final : public BodyDescriptorBase {
  public:
   STATIC_ASSERT(kRelocationInfoOffset + kPointerSize == kHandlerTableOffset);
   STATIC_ASSERT(kHandlerTableOffset + kPointerSize ==
                 kDeoptimizationDataOffset);
   STATIC_ASSERT(kDeoptimizationDataOffset + kPointerSize ==
+                kSourcePositionTableOffset);
+  STATIC_ASSERT(kSourcePositionTableOffset + kPointerSize ==
                 kTypeFeedbackInfoOffset);
   STATIC_ASSERT(kTypeFeedbackInfoOffset + kPointerSize == kNextCodeLinkOffset);
 
   static bool IsValidSlot(HeapObject* obj, int offset) {
     // Slots in code can't be invalid because we never trim code objects.
     return true;
   }
 
   template <typename ObjectVisitor>
   static inline void IterateBody(HeapObject* obj, ObjectVisitor* v) {
@@ skipping 196 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_