[runtime] Better encapsulation of dictionary objects handling in lookup iterator.

src/ic/ppc/handler-compiler-ppc.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/ic/handler-compiler.h"
 
 #include "src/api-arguments.h"
 #include "src/field-type.h"
@@ skipping 180 matching lines @@
   __ Ret();
 }
 
 
 // Generate code to check that a global property cell is empty. Create
 // the property cell at compilation time if no cell exists for the
 // property.
 void PropertyHandlerCompiler::GenerateCheckPropertyCell(
     MacroAssembler* masm, Handle<JSGlobalObject> global, Handle<Name> name,
     Register scratch, Label* miss) {
-  Handle<PropertyCell> cell = JSGlobalObject::EnsurePropertyCell(global, name);
+  Handle<PropertyCell> cell = JSGlobalObject::EnsureEmptyPropertyCell(
+      global, name, PropertyCellType::kInvalidated);
   Isolate* isolate = masm->isolate();
   DCHECK(cell->value()->IsTheHole(isolate));
   Handle<WeakCell> weak_cell = isolate->factory()->NewWeakCell(cell);
   __ LoadWeakValue(scratch, weak_cell, miss);
   __ LoadP(scratch, FieldMemOperand(scratch, PropertyCell::kValueOffset));
   __ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
   __ cmp(scratch, ip);
   __ bne(miss);
 }
 
@@ skipping 487 matching lines @@
   // Return the generated code.
   return GetCode(kind(), name);
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM