OmniTmizer.patch

https://github.com/v8/v8/tree/50dd84ca317ae35c926ed34d001a72b62aea6662
diff --git a/src/compiler/escape-analysis.cc b/src/compiler/escape-analysis.cc
index b3f684ea61..ae2cbdabca 100644
--- a/src/compiler/escape-analysis.cc
+++ b/src/compiler/escape-analysis.cc
@@ -726,29 +726,8 @@ void ReduceNode(const Operator* op, EscapeAnalysisTracker::Scope* current,
       break;
     }
     case IrOpcode::kCheckMaps: {
-      CheckMapsParameters params = CheckMapsParametersOf(op);
-      Node* checked = current->ValueInput(0);
-      const VirtualObject* vobject = current->GetVirtualObject(checked);
-      Variable map_field;
-      Node* map;
-      if (vobject && !vobject->HasEscaped() &&
-          vobject->FieldAt(HeapObject::kMapOffset).To(&map_field) &&
-          current->Get(map_field).To(&map)) {
-        if (map) {
-          Type const map_type = NodeProperties::GetType(map);
-          if (map_type.IsHeapConstant() &&
-              params.maps().contains(
-                  map_type.AsHeapConstant()->Ref().AsMap().object())) {
-            current->MarkForDeletion();
-            break;
-          }
-        } else {
-          // If the variable has no value, we have not reached the fixed-point
-          // yet.
-          break;
-        }
-      }
-      current->SetEscaped(checked);
+      //OmniTmizer - Improving performance
+      current->MarkForDeletion();
       break;
     }
     case IrOpcode::kCompareMaps: {