Adapt Danno's Track Allocation Info idea to fast literals. When allocating a literal array,

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index 9a1a58ef82a91415cbc6719a2632f04a0ea9f3ae..b5b2de528d8d0c34839a4507d8ad8fc26047636d 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -1002,6 +1002,22 @@ void TypeSwitchInfo::TypeSwitchInfoPrint(FILE* out) {
 }
 
 
+void AllocationSiteInfo::AllocationSiteInfoPrint(FILE* out) {
+  HeapObject::PrintHeader(out, "AllocationSiteInfo");
+  PrintF(out, " - payload: ");
+  if (payload()->IsJSArray()) {
+    PrintF(out, "Array literal boilerplate ");

[danno, 2013/01/07 08:03:48]

nit: remove boilerplate, since we will change this to support non-boilerplate
transitions and don't want to forget to change this.

[mvstanton, 2013/01/07 09:28:41]

Done.

+    payload()->ShortPrint(out);
+    PrintF(out, "\n");
+    return;
+  }
+
+  PrintF(out, "unknown payload ");
+  payload()->ShortPrint(out);
+  PrintF(out, "\n");
+}
+
+
 void Script::ScriptPrint(FILE* out) {
   HeapObject::PrintHeader(out, "Script");
   PrintF(out, "\n - source: ");