DBC: CheckClassInstr

runtime/vm/deferred_objects.h

 // Copyright (c) 2013, 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_DEFERRED_OBJECTS_H_
 #define VM_DEFERRED_OBJECTS_H_
 
 #include "platform/globals.h"
 
 namespace dart {
@@ skipping 213 matching lines @@
     kValueIndex,
     kFieldEntrySize,
   };
 
   // Allocate the object but keep its fields null-initialized. Actual field
   // values will be filled later by the Fill method. This separation between
   // allocation and filling is needed because dematerialized objects form
   // a graph which can contain cycles.
   void Create();
 
+#if !defined(TARGET_ARCH_DBC)
   RawObject* GetClass() const {
     return args_[kClassIndex];
   }
 
   RawObject* GetLength() const {
     return args_[kLengthIndex];
   }
 
   RawObject* GetFieldOffset(intptr_t index) const {
     return args_[kFieldsStartIndex + kFieldEntrySize * index + kOffsetIndex];
   }
 
   RawObject* GetValue(intptr_t index) const {
     return args_[kFieldsStartIndex + kFieldEntrySize * index + kValueIndex];
   }
 
+#else

[zra, 2016/06/23 23:06:01]

Is there a better hack to fix this problem?

[Vyacheslav Egorov (Google), 2016/06/24 14:47:07]

How about:

RawObject* GetArg(intptr_t index) {
#if !defined(...)
  return args_[index];
#else
  return args_[-index];
#endif
}

and then using it below instead of args_[...]

[zra, 2016/06/24 22:37:49]

Done.

+
+  RawObject* GetClass() const {
+    return args_[-kClassIndex];
+  }
+
+  RawObject* GetLength() const {
+    return args_[-kLengthIndex];
+  }
+
+  RawObject* GetFieldOffset(intptr_t index) const {
+    return args_[-kFieldsStartIndex - kFieldEntrySize * index - kOffsetIndex];
+  }
+
+  RawObject* GetValue(intptr_t index) const {
+    return args_[-kFieldsStartIndex - kFieldEntrySize * index - kValueIndex];
+  }
+#endif  // !defined(TARGET_ARCH_DBC)
+
   // Amount of fields that have to be initialized.
   const intptr_t field_count_;
 
   // Pointer to the first materialization argument on the stack.
   // The first argument is Class of the instance to materialize followed by
   // Field, value pairs.
   RawObject** args_;
 
   // Object materialized from this description.
   const Object* object_;
 
   DISALLOW_COPY_AND_ASSIGN(DeferredObject);
 };
 
 }  // namespace dart
 
 #endif  // VM_DEFERRED_OBJECTS_H_