Do not count invocations but usage of a function, i.e., increment a function's counter at IC calls …

runtime/vm/opt_code_generator_ia32.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_OPT_CODE_GENERATOR_IA32_H_
 #define VM_OPT_CODE_GENERATOR_IA32_H_
 
 #ifndef VM_OPT_CODE_GENERATOR_H_
 #error Do not include opt_code_generator_ia32.h; use opt_code_generator.h.
 #endif
@@ skipping 38 matching lines @@
   virtual void VisitTryCatchNode(TryCatchNode* node);
   virtual void VisitUnaryOpNode(UnaryOpNode* node);
 
   // Return true if intrinsification succeeded and no more code is needed.
   // Returns false if either no intrinsification occured or if intrinsified
   // code needs the rest for slow case execution.
   virtual bool TryIntrinsify();
   virtual void GeneratePreEntryCode();
   virtual bool IsOptimizing() const { return true; }
 
-  virtual void CountBackwardLoop() {}
   virtual void GenerateDeferredCode();
 
  private:
   friend class DeoptimizationBlob;
 
   DeoptimizationBlob* AddDeoptimizationBlob(AstNode* node,
                                             DeoptReasonId reason_id);
   DeoptimizationBlob* AddDeoptimizationBlob(AstNode* node,
                                             Register reg1,
                                             DeoptReasonId reason_id);
@@ skipping 96 matching lines @@
   const Class& smi_class_;
   const Class& double_class_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(OptimizingCodeGenerator);
 };
 
 }  // namespace dart
 
 
 #endif  // VM_OPT_CODE_GENERATOR_IA32_H_