Make breakpoints on == fire reliably

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 2420 matching lines @@
  public:
   enum Kind {
     kDeopt,            // Deoptimization continuation point.
     kEntryPatch,       // Location where to patch entry.
     kPatchCode,        // Buffer for patching code entry.
     kLazyDeoptJump,    // Lazy deoptimization trampoline.
     kIcCall,           // IC call.
     kFuncCall,         // Call to known target, e.g. static call.
     kClosureCall,      // Closure call.
     kReturn,           // Return from function.
+    kEqualNull,        // Stub for comparison with null.
     kOther
   };
 
   intptr_t Length() const;
 
   uword PC(intptr_t index) const;
   PcDescriptors::Kind DescriptorKind(intptr_t index) const;
   const char* KindAsStr(intptr_t index) const;
   intptr_t DeoptId(intptr_t index) const;
   intptr_t TokenPos(intptr_t index) const;
@@ skipping 3313 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_