Add field nested_sites to AllocationSite.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 4c099fdc31d0e3b2f21533b5927d31ef3094348b..043b0bd75a89bed3690658943c9fc03c5c5bdf7a 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -7827,11 +7827,15 @@ class AllocationSite: public Struct {
   static const uint32_t kMaximumArrayBytesToPretransition = 8 * 1024;
 
   DECL_ACCESSORS(transition_info, Object)
+  DECL_ACCESSORS(nested_sites, Object)

[Hannes Payer (out of office), 2013/09/24 08:04:40]

I think we should call it next or nested_sit and say in a comment that this list
represents the nested literals in a specific order.

[mvstanton, 2013/09/24 08:39:15]

Done.

   DECL_ACCESSORS(dependent_code, DependentCode)
   DECL_ACCESSORS(weak_next, Object)
 
   inline void Initialize();
 
+  AllocationSite* GetLastNestedSite();
+  void AppendNestedSite(AllocationSite* nested_site);
+
   ElementsKind GetElementsKind() {
     ASSERT(!IsLiteralSite());
     return static_cast<ElementsKind>(Smi::cast(transition_info())->value());
@@ -7858,7 +7862,8 @@ class AllocationSite: public Struct {
   static inline bool CanTrack(InstanceType type);
 
   static const int kTransitionInfoOffset = HeapObject::kHeaderSize;
-  static const int kDependentCodeOffset = kTransitionInfoOffset + kPointerSize;
+  static const int kNestedSitesOffset = kTransitionInfoOffset + kPointerSize;

[Hannes Payer (out of office), 2013/09/24 08:04:40]

kNextOffset or kNestedSiteOffset

[mvstanton, 2013/09/24 08:39:15]

Done.

+  static const int kDependentCodeOffset = kNestedSitesOffset + kPointerSize;
   static const int kWeakNextOffset = kDependentCodeOffset + kPointerSize;
   static const int kSize = kWeakNextOffset + kPointerSize;