Create and cache method extraction stub in the ICData.

runtime/vm/intermediate_language.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_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 3009 matching lines @@
   const intptr_t token_pos_;
   ZoneGrowableArray<PushArgumentInstr*>* const arguments_;
   const AbstractType& type_;
 
   DISALLOW_COPY_AND_ASSIGN(CreateArrayInstr);
 };
 
 
 class CreateClosureInstr : public TemplateDefinition<0> {
  public:
-  CreateClosureInstr(ClosureNode* node,
-                     ZoneGrowableArray<PushArgumentInstr*>* arguments)
-      : ast_node_(*node),
-        arguments_(arguments) { }
+  CreateClosureInstr(const Function& function,
+                     ZoneGrowableArray<PushArgumentInstr*>* arguments,
+                     intptr_t token_pos)
+      : function_(function),
+        arguments_(arguments),
+        token_pos_(token_pos) { }
 
   DECLARE_INSTRUCTION(CreateClosure)
   virtual RawAbstractType* CompileType() const;
 
-  intptr_t token_pos() const { return ast_node_.token_pos(); }
-  const Function& function() const { return ast_node_.function(); }
+  intptr_t token_pos() const { return token_pos_; }
+  const Function& function() const { return function_; }
 
   virtual intptr_t ArgumentCount() const { return arguments_->length(); }
   PushArgumentInstr* ArgumentAt(intptr_t index) const {
     return (*arguments_)[index];
   }
 
   virtual void PrintOperandsTo(BufferFormatter* f) const;
 
   virtual bool CanDeoptimize() const { return false; }
 
   virtual bool HasSideEffect() const { return true; }
 
   virtual intptr_t ResultCid() const { return kDynamicCid; }
 
  private:
-  const ClosureNode& ast_node_;
+  const Function& function_;
   ZoneGrowableArray<PushArgumentInstr*>* arguments_;
+  intptr_t token_pos_;
 
   DISALLOW_COPY_AND_ASSIGN(CreateClosureInstr);
 };
 
 
 class LoadFieldInstr : public TemplateDefinition<1> {
  public:
   LoadFieldInstr(Value* value,
                  intptr_t offset_in_bytes,
                  const AbstractType& type,
@@ skipping 1319 matching lines @@
   ForwardInstructionIterator* current_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_