Rollback of r19535 in 3.24 branch.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index ccaa0ecc228602b7ca72161547df508bc85fe3d2..4d09bb8ec9bb4cc8ab537e81ce4ad99c25d7c84c 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -9894,11 +9894,9 @@ void HOptimizedGraphBuilder::BuildEmitInObjectProperties(
         Add<HStoreNamedField>(double_box, HObjectAccess::ForHeapNumberValue(),
                               Add<HConstant>(value));
         value_instruction = double_box;
-      } else if (representation.IsSmi()) {
-        value_instruction = value->IsUninitialized()
-            ? graph()->GetConstant0()
-            : Add<HConstant>(value);
-        // Ensure that value is stored as smi.
+      } else if (representation.IsSmi() && value->IsUninitialized()) {
+        value_instruction = graph()->GetConstant0();
+        // Ensure that Constant0 is stored as smi.
         access = access.WithRepresentation(representation);
       } else {
         value_instruction = Add<HConstant>(value);