Add instruction tags to saved ICData (debug mode only).

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 2057 matching lines @@
                            TokenPosition token_pos,
                            bool is_static_call) const;
 
   // Initialize the preallocated empty ICData entry arrays.
   static void InitOnce();
 
   enum {
     kCachedICDataArrayCount = 4
   };
 
+#if defined(TAG_IC_DATA)
+  void set_tag(intptr_t value) const;
+  intptr_t tag() const { return raw_ptr()->tag_; }
+#endif
+
  private:
   static RawICData* New();
 
   RawArray* ic_data() const {
     return raw_ptr()->ic_data_;
   }
 
   void set_owner(const Function& value) const;
   void set_target_name(const String& value) const;
   void set_arguments_descriptor(const Array& value) const;
@@ skipping 6346 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_