[turbofan] Merge PropertyAccessInfo for compatible field loads.

src/compiler/access-info.h

Index: src/compiler/access-info.h
diff --git a/src/compiler/access-info.h b/src/compiler/access-info.h
index 809aa83e474fa624f761e0b34b13b72ea3de3313..7348ce84c08f8c72d1f70824de4e6cab75774d24 100644
--- a/src/compiler/access-info.h
+++ b/src/compiler/access-info.h
@@ -83,7 +83,8 @@ class PropertyAccessInfo final {
 
   PropertyAccessInfo();
 
-  bool Merge(PropertyAccessInfo const* that) WARN_UNUSED_RESULT;
+  bool Merge(PropertyAccessInfo const* that, AccessMode access_mode,
+             Zone* zone) WARN_UNUSED_RESULT;
 
   bool IsNotFound() const { return kind() == kNotFound; }
   bool IsDataConstant() const { return kind() == kDataConstant; }