Optimize type checks of list and map literals.

runtime/vm/object.h

 // Copyright (c) 2011, 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.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "vm/assert.h"
 #include "vm/dart.h"
 #include "vm/globals.h"
@@ skipping 2121 matching lines @@
 
   void SetField(const Field& field, const Object& value) const {
     *FieldAddr(field) = value.raw();
   }
 
   RawType* GetType() const;
 
   virtual RawTypeArguments* GetTypeArguments() const;
   virtual void SetTypeArguments(const TypeArguments& value) const;
 
-  // Short version of IsInstanceOf with an instantiated type.
-  bool Is(const Type& type) const {
-    ASSERT(type.IsInstantiated());
-    const TypeArguments& no_instantiator = TypeArguments::Handle();
-    return TestType(kIsSubtypeOf, type, no_instantiator);
-  }
-
   // Check if this instance is an instance of the given type.
   bool IsInstanceOf(const Type& type,
                     const TypeArguments& type_instantiator) const {
     return TestType(kIsSubtypeOf, type, type_instantiator);
   }
 
   // Check if this instance is assignable to the given type.
   bool IsAssignableTo(const Type& type,
                       const TypeArguments& type_instantiator) const {
     return TestType(kIsAssignableTo, type, type_instantiator);
@@ skipping 1077 matching lines @@
 }
 
 
 void Context::SetAt(intptr_t index, const Instance& value) const {
   StorePointer(InstanceAddr(index), value.raw());
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_