[runtime] Store constructor function index on primitive maps.

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index 1819b32d0d3e8e7b31ee0887ca6f8bf02c56b5ee..807a65102940649f0cd132a30b2cef254810323f 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -6106,10 +6106,10 @@ class HObjectAccess final {
                          Representation::Integer32());
   }
 
-  static HObjectAccess ForMapInObjectProperties() {
-    return HObjectAccess(kInobject,
-                         Map::kInObjectPropertiesOffset,
-                         Representation::UInteger8());
+  static HObjectAccess ForMapInObjectPropertiesOrConstructorFunctionIndex() {
+    return HObjectAccess(
+        kInobject, Map::kInObjectPropertiesOrConstructorFunctionIndexOffset,
+        Representation::UInteger8());
   }
 
   static HObjectAccess ForMapInstanceType() {