Use mutable heapnumbers to store doubles in fields.

src/parser.cc

Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index 33b5fab3fc8c6b9cd198a99384fe4bf60111d738..07ce001d27189143f6652d3dd5d96b0492d2ce11 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -4014,6 +4014,12 @@ void Parser::BuildObjectLiteralConstantProperties(
     // runtime. The enumeration order is maintained.
     Handle<Object> key = property->key()->handle();
     Handle<Object> value = GetBoilerplateValue(property->value());
+
+    // Ensure objects with doubles are always treated as nested objects.
+    // TODO(verwaest): Remove once we can store them inline.
+    if (FLAG_track_fields && value->IsNumber()) {
+      depth_acc = Max(2, depth_acc);
+    }

[danno, 2013/05/07 13:04:47]

*COUGH* Any other better way to do this? *COUGH*
Boolean would be better.

[Toon Verwaest, 2013/05/07 15:08:52]

Done.

     is_simple_acc = is_simple_acc && !value->IsUndefined();
 
     // Keep track of the number of elements in the object literal and