--collect_dynamic_function_names (default false): find unique virtual function names and use them t…

runtime/vm/precompiler.h

 // Copyright (c) 2015, 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_PRECOMPILER_H_
 #define VM_PRECOMPILER_H_
 
 #include "vm/allocation.h"
 #include "vm/hash_map.h"
 #include "vm/object.h"
@@ skipping 75 matching lines @@
 
 typedef DirectChainedHashMap<FunctionKeyValueTrait> FunctionSet;
 
 
 class Precompiler : public ValueObject {
  public:
   static RawError* CompileAll(
       Dart_QualifiedFunctionName embedder_entry_points[],
       bool reset_fields);
 
+  // Returns named function that is a unique dynamic target, i.e.,
+  // - the target is identified by its name alone, since it occurs only once.
+  // - target's class has no subclasses, and neither is subclassed, i.e.,
+  //   the receiver type can be only the function's class.
+  // Returns Function::null() if there is no unique dynamic target for
+  // given 'fname'. 'fname' must be a symbol.
+  static void GetUniqueDynamicTarget(Isolate* isolate,
+                                     const String& fname,
+                                     Object* function);
+
  private:
   Precompiler(Thread* thread, bool reset_fields);
 
   void DoCompileAll(Dart_QualifiedFunctionName embedder_entry_points[]);
   void ClearAllCode();
   void AddRoots(Dart_QualifiedFunctionName embedder_entry_points[]);
   void AddEntryPoints(Dart_QualifiedFunctionName entry_points[]);
   void Iterate();
 
   void AddCalleesOf(const Function& function);
   void AddConstObject(const Instance& instance);
   void AddClosureCall(const ICData& call_site);
   void AddField(const Field& field);
   void AddFunction(const Function& function);
   void AddInstantiatedClass(const Class& cls);
   void AddSelector(const String& selector);
   bool IsSent(const String& selector);
 
   void ProcessFunction(const Function& function);
   void CheckForNewDynamicFunctions();
 
   void DropUncompiledFunctions();
+  void CollectDynamicFunctionNames();
   void BindStaticCalls();
   void DedupStackmaps();
   void ResetPrecompilerState();
 
   class FunctionVisitor : public ValueObject {
    public:
     virtual ~FunctionVisitor() {}
     virtual void VisitFunction(const Function& function) = 0;
   };
 
@@ skipping 20 matching lines @@
   const GrowableObjectArray& libraries_;
   const GrowableObjectArray& pending_functions_;
   SymbolSet sent_selectors_;
   FunctionSet enqueued_functions_;
   Error& error_;
 };
 
 }  // namespace dart
 
 #endif  // VM_PRECOMPILER_H_