Use weak cell in LoadGlobal handler.

src/ic/x87/handler-compiler-x87.cc

Index: src/ic/x87/handler-compiler-x87.cc
diff --git a/src/ic/x87/handler-compiler-x87.cc b/src/ic/x87/handler-compiler-x87.cc
index db388d8e283a6312fdbcbbebff97041d8d8e602e..2ff35954c89a95e3e13815de1c0c718d5d247623 100644
--- a/src/ic/x87/handler-compiler-x87.cc
+++ b/src/ic/x87/handler-compiler-x87.cc
@@ -724,12 +724,9 @@ Handle<Code> NamedLoadHandlerCompiler::CompileLoadGlobal(
   FrontendHeader(receiver(), name, &miss);
   // Get the value from the cell.
   Register result = StoreDescriptor::ValueRegister();
-  if (masm()->serializer_enabled()) {
-    __ mov(result, Immediate(cell));
-    __ mov(result, FieldOperand(result, PropertyCell::kValueOffset));
-  } else {
-    __ mov(result, Operand::ForCell(cell));
-  }
+  Handle<WeakCell> weak_cell = factory()->NewWeakCell(cell);
+  __ LoadWeakValue(result, weak_cell, &miss);
+  __ mov(result, FieldOperand(result, PropertyCell::kValueOffset));
 
   // Check for deleted property if property can actually be deleted.
   if (is_configurable) {