Shrink the size of deoptimization_counter_ and kind_tag_ fields. This

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 1482 matching lines @@
   static intptr_t usage_counter_offset() {
     return OFFSET_OF(RawFunction, usage_counter_);
   }
   intptr_t usage_counter() const {
     return raw_ptr()->usage_counter_;
   }
   void set_usage_counter(intptr_t value) const {
     raw_ptr()->usage_counter_ = value;
   }
 
-  intptr_t deoptimization_counter() const {
+  int16_t deoptimization_counter() const {
     return raw_ptr()->deoptimization_counter_;
   }
-  void set_deoptimization_counter(intptr_t value) const {
+  void set_deoptimization_counter(int16_t value) const {
     raw_ptr()->deoptimization_counter_ = value;
   }
 
   bool is_optimizable() const;
   void set_is_optimizable(bool value) const;
 
   bool has_finally() const {
     return HasFinallyBit::decode(raw_ptr()->kind_tag_);
   }
   void set_has_finally(bool value) const;
@@ skipping 4057 matching lines @@
     if (this->CharAt(i) != str.CharAt(begin_index + i)) {
       return false;
     }
   }
   return true;
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_