In preparation for lazy deoptimization add "is_alive_" field to RawCode: visit embedded pointers on…

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 2516 matching lines @@
   }
   intptr_t pointer_offsets_length() const {
     return raw_ptr()->pointer_offsets_length_;
   }
   bool is_optimized() const {
     return (raw_ptr()->is_optimized_ == 1);
   }
   void set_is_optimized(bool value) const {
     raw_ptr()->is_optimized_ = value ? 1 : 0;
   }
+  bool is_alive() const {
+    return (raw_ptr()->is_alive_ == 1);
+  }
+  void set_is_alive(bool value) const {
+    raw_ptr()->is_alive_ = value ? 1 : 0;
+  }
 
   uword EntryPoint() const {
     const Instructions& instr = Instructions::Handle(instructions());
     return instr.EntryPoint();
   }
   intptr_t Size() const {
     const Instructions& instr = Instructions::Handle(instructions());
     return instr.size();
   }
 
@@ skipping 3016 matching lines @@
     if (this->CharAt(i) != str.CharAt(begin_index + i)) {
       return false;
     }
   }
   return true;
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_