Write the contents of ICData and ObjectPools more eagerly and the contents of Code and Functions

runtime/vm/snapshot.cc

Index: runtime/vm/snapshot.cc
diff --git a/runtime/vm/snapshot.cc b/runtime/vm/snapshot.cc
index 515d5a560cf43df207f5c528d7733229d7ebf6e4..661ad53503ff443f8985385dd697bb3774c00817 100644
--- a/runtime/vm/snapshot.cc
+++ b/runtime/vm/snapshot.cc
@@ -2226,7 +2226,10 @@ void SnapshotWriter::WriteObjectImpl(RawObject* raw, bool as_reference) {
     return;
   }
 
-  if (as_reference && !raw->IsCanonical()) {
+  if (as_reference &&
+      !raw->IsCanonical() &&
+      !raw->IsCode() &&
+      !raw->IsInstructions()) {
     WriteObjectRef(raw);
   } else {
     // Object is being serialized, add it to the forward ref list and mark