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

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 1318 matching lines @@
   void set_num_fixed_parameters(intptr_t value) const;
 
   static intptr_t num_optional_parameters_offset() {
     return OFFSET_OF(RawFunction, num_optional_parameters_);
   }
   intptr_t num_optional_parameters() const {
     return raw_ptr()->num_optional_parameters_;
   }
   void set_num_optional_parameters(intptr_t value) const;
 
-  static intptr_t invocation_counter_offset() {
-    return OFFSET_OF(RawFunction, invocation_counter_);
+  static intptr_t usage_counter_offset() {
+    return OFFSET_OF(RawFunction, usage_counter_);
   }
-  intptr_t invocation_counter() const {
-    return raw_ptr()->invocation_counter_;
+  intptr_t usage_counter() const {
+    return raw_ptr()->usage_counter_;
   }
-  void set_invocation_counter(intptr_t value) const {
-    raw_ptr()->invocation_counter_ = value;
+  void set_usage_counter(intptr_t value) const {
+    raw_ptr()->usage_counter_ = value;
   }
 
   intptr_t deoptimization_counter() const {
     return raw_ptr()->deoptimization_counter_;
   }
   void set_deoptimization_counter(intptr_t value) const {
     raw_ptr()->deoptimization_counter_ = value;
   }
 
   bool is_optimizable() const {
@@ skipping 2290 matching lines @@
   }
 
   static intptr_t num_args_tested_offset() {
     return OFFSET_OF(RawICData, num_args_tested_);
   }
 
   static intptr_t ic_data_offset() {
     return OFFSET_OF(RawICData, ic_data_);
   }
 
+  static intptr_t function_offset() {
+    return OFFSET_OF(RawICData, function_);
+  }
+
   void AddCheck(const GrowableArray<const Class*>& classes,
                 const Function& target) const;
   void GetCheckAt(intptr_t index,
                   GrowableArray<const Class*>* classes,
                   Function* target) const;
   void GetOneClassCheckAt(int index, Class* cls, Function* target) const;
 
   static RawICData* New(const Function& caller_function,
                         const String& target_name,
                         intptr_t id,
@@ skipping 71 matching lines @@
 }
 
 
 void Context::SetAt(intptr_t index, const Instance& value) const {
   StorePointer(InstanceAddr(index), value.raw());
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_