Store the RegExp and the string specialization cid in an Array in RawFunction::data_.

runtime/vm/object.h

 // 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.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 2086 matching lines @@
   bool HasInstantiatedSignature() const;
 
   // Build a string of the form 'T, {b: B, c: C} representing the user
   // visible formal parameters of the function.
   RawString* UserVisibleFormalParameters() const;
 
   RawClass* Owner() const;
   RawClass* origin() const;
   RawScript* script() const;
 
-  void set_regexp(const JSRegExp& value) const;
   RawJSRegExp* regexp() const;
-
-  // Get and set the class id this function is specialized for. Only set for
-  // irregexp functions.
-  intptr_t regexp_cid() const { return raw_ptr()->regexp_cid_; }
-  void set_regexp_cid(intptr_t regexp_cid) const;
+  intptr_t string_specialization_cid() const;
+  void SetRegExpData(const JSRegExp& regexp,
+                     intptr_t string_specialization_cid) const;
 
   RawAbstractType* result_type() const { return raw_ptr()->result_type_; }
   void set_result_type(const AbstractType& value) const;
 
   RawAbstractType* ParameterTypeAt(intptr_t index) const;
   void SetParameterTypeAt(intptr_t index, const AbstractType& value) const;
   RawArray* parameter_types() const { return raw_ptr()->parameter_types_; }
   void set_parameter_types(const Array& value) const;
 
   // Parameter names are valid for all valid parameter indices, and are not
@@ skipping 5908 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_