[turbofan] Optimize loads from the global object in JSTypeFeedbackSpecializer.

src/compiler/access-builder.h

Index: src/compiler/access-builder.h
diff --git a/src/compiler/access-builder.h b/src/compiler/access-builder.h
index 76f1d8ad15f22469c1e1a96ba1956622a91f8484..4d28db1f71b15cebe89aca08082ed575a14f4c8b 100644
--- a/src/compiler/access-builder.h
+++ b/src/compiler/access-builder.h
@@ -49,6 +49,9 @@ class AccessBuilder final : public AllStatic {
   // Provides access to the backing store of a StatsCounter.
   static FieldAccess ForStatsCounter();
 
+  // Provides access to PropertyCell::value() field.
+  static FieldAccess ForPropertyCellValue();
+
   // Provides access to FixedArray elements.
   static ElementAccess ForFixedArrayElement();