Remove extranous holder load in some prototype-chain checking cases

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index abff7b77830e1fe1b4ec26cd48dfe930572c418b..bb56296a22def95346c2a2379d7cd3811300c7bb 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -7113,8 +7113,10 @@ HInstruction* HOptimizedGraphBuilder::BuildLoadNamedMonomorphic(
     Handle<JSObject> holder(lookup.holder());
     Handle<Map> holder_map(holder->map());
     AddCheckMap(object, map);
-    HInstruction* holder_value = AddInstruction(
+    AddInstruction(
         new(zone()) HCheckPrototypeMaps(prototype, holder, zone()));
+    HValue* holder_value = AddInstruction(
+            new(zone()) HConstant(holder, Representation::Tagged()));
     return BuildLoadNamedField(holder_value, holder_map, &lookup);
   }