In precompilation, finalize all classes eagerly. Use the stable class hierarchy for doing CHA based…

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index a092c95cde3220c00e3fd04463f3b4ce3683bd46..d50ff0cc1f074cfee29efcd1bff0e19b10979f5a 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -2773,6 +2773,7 @@ void Class::set_invocation_dispatcher_cache(const Array& cache) const {
 
 
 void Class::Finalize() const {
+  ASSERT(IsSignatureClass() || !Isolate::Current()->all_classes_finalized());

[rmacnak, 2015/10/14 16:38:48]

Add note that signature classes may be added after we've finalized all the
regular classes when we encounter local functions.

[srdjan, 2015/10/14 16:51:58]

Done.

   ASSERT(!is_finalized());
   // Prefinalized classes have a VM internal representation and no Dart fields.
   // Their instance size  is precomputed and field offsets are known.
@@ -3037,7 +3038,6 @@ RawObject* Class::Evaluate(const String& expr,
 
 
 // Ensure that top level parsing of the class has been done.
-// TODO(24109): Migrate interface to Thread*.
 RawError* Class::EnsureIsFinalized(Thread* thread) const {
   // Finalized classes have already been parsed.
   if (is_finalized()) {