Canonicalize types.

runtime/vm/raw_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_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "vm/assert.h"
 #include "vm/globals.h"
 #include "vm/snapshot.h"
@@ skipping 186 matching lines @@
   RawScript* script_;
   RawLibrary* library_;
   RawArray* type_parameters_;  // Array of String.
   RawTypeArray* type_parameter_extends_;  // DynamicType if no extends clause.
   RawType* super_type_;
   RawType* factory_type_;
   RawFunction* signature_function_;  // Associated function for signature class.
   RawType* signature_type_;  // Cached function type for signature class.
   RawArray* functions_cache_;  // See class FunctionsCache.
   RawArray* constants_;  // Canonicalized values of this class.
+  RawArray* canonical_types_;  // Canonicalized types of this class.
   RawCode* allocation_stub_;  // Stub code for allocation of instances.
   RawObject** to() {
     return reinterpret_cast<RawObject**>(&ptr()->allocation_stub_);
   }
 
   cpp_vtable handle_vtable_;
   intptr_t instance_size_;
   ObjectKind instance_kind_;
   intptr_t type_arguments_instance_field_offset_;  // May be kNoTypeArguments.
   intptr_t num_constants_;  // Number of objects in constants_ array.
+  intptr_t num_canonical_types_;  // Number of types in canonical_types_ array.
   intptr_t next_field_offset_;  // Offset of then next instance field.
   intptr_t num_native_fields_;  // Number of native fields in class.
   int8_t class_state_;  // Of type ClassState.
   bool is_const_;
   bool is_interface_;
 
   friend class Object;
   friend class RawInstance;
 };
 
@@ skipping 543 matching lines @@
   intptr_t type_;  // Uninitialized, simple or complex.
   intptr_t flags_;  // Represents global/local, case insensitive, multiline.
 
   // Variable length data follows here.
   uint8_t data_[0];
 };
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_