First step toward an optimizing compiler:

runtime/vm/intermediate_language.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/object.h"
 #include "vm/os.h"
@@ skipping 535 matching lines @@
   return AbstractType::null();
 }
 
 
 RawAbstractType* CatchEntryComp::StaticType() const {
   UNREACHABLE();
   return AbstractType::null();
 }
 
 
+RawAbstractType* BinaryOpComp::StaticType() const {
+  // TODO(srdjan): Compute based on input types (ICData).
+  return Type::DynamicType();
+}
+
+
 }  // namespace dart