Additional work to get array literal allocation tracking working, even with --always-opt

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index b2cb07c9bf82a7d6fd8a5fe6d186e92ce0cfd580..3d2ccb21774e3b43b9f1f8fcf92dc6032582730d 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -4981,7 +4981,7 @@ class Map: public HeapObject {
     set_bit_field3(EnumLengthBits::update(bit_field3(), length));
   }
 
-
+  inline bool CanTrackAllocationSite();
   inline bool owns_descriptors();
   inline void set_owns_descriptors(bool is_shared);
   inline bool is_observed();
@@ -6911,6 +6911,8 @@ enum AllocationSiteInfoMode {
 };
 
 
+

[Toon Verwaest, 2013/01/16 10:53:42]

Trim empty lines down to 2.

[mvstanton, 2013/01/16 13:01:56]

Done.

+
 class AllocationSiteInfo: public Struct {
  public:
   DECL_ACCESSORS(payload, Object)
@@ -6923,6 +6925,10 @@ class AllocationSiteInfo: public Struct {
   // Returns NULL if no AllocationSiteInfo is available for object.
   static AllocationSiteInfo* FindForJSObject(JSObject* object);
 
+  static AllocationSiteInfoMode GetMode();

[Toon Verwaest, 2013/01/16 10:53:42]

Just use the flag if no other arguments are required.

[mvstanton, 2013/01/16 13:01:56]

Done.

+  static AllocationSiteInfoMode GetMode(ElementsKind boilerplate_elements_kind);
+  static AllocationSiteInfoMode GetMode(ElementsKind from, ElementsKind to);
+
   static const int kPayloadOffset = HeapObject::kHeaderSize;
   static const int kSize = kPayloadOffset + kPointerSize;