Rename IsDontDelete to IsConfigurable (and invert conditions)

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index 4c29e34d40510f54765641c02abdca3425bb41d0..ec50f5bdfd2733c3ab9b8d96159c15c2e37e4865 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -5793,9 +5793,7 @@ class HStoreGlobalCell V8_FINAL : public HUnaryOperation {
                                  Handle<PropertyCell>, PropertyDetails);
 
   Unique<PropertyCell> cell() const { return cell_; }
-  bool RequiresHoleCheck() {
-    return !details_.IsDontDelete() || details_.IsReadOnly();
-  }
+  bool RequiresHoleCheck() { return details_.IsConfigurable(); }

[Toon Verwaest, 2014/08/21 08:53:23]

I removed IsReadOnly because we don't use the hole anymore for const
declarations.

   bool NeedsWriteBarrier() {
     return StoringValueNeedsWriteBarrier(value());
   }