[turbofan] Track multiple maps for LoadElimination.

src/compiler/js-global-object-specialization.cc

Index: src/compiler/js-global-object-specialization.cc
diff --git a/src/compiler/js-global-object-specialization.cc b/src/compiler/js-global-object-specialization.cc
index 4a0bdf9176e4e8ef4353808ec9141422f77cde7e..25d0545f52f9b52acc9841e0e87b9e20a0c1a498 100644
--- a/src/compiler/js-global-object-specialization.cc
+++ b/src/compiler/js-global-object-specialization.cc
@@ -213,9 +213,9 @@ Reduction JSGlobalObjectSpecialization::ReduceJSStoreGlobal(Node* node) {
         // Check {value} map agains the {property_cell} map.
         Handle<Map> property_cell_value_map(
             Handle<HeapObject>::cast(property_cell_value)->map(), isolate());
-        effect = graph()->NewNode(
-            simplified()->CheckMaps(1), value,
-            jsgraph()->HeapConstant(property_cell_value_map), effect, control);
+        effect = graph()->NewNode(simplified()->CheckMaps(ZoneHandleSet<Map>(
+                                      property_cell_value_map)),
+                                  value, effect, control);
         property_cell_value_type = Type::OtherInternal();
         representation = MachineRepresentation::kTaggedPointer;
       } else {