diff --git a/compiler/src/dmd/aggregate.h b/compiler/src/dmd/aggregate.h
index d3aad56877..4dedd945be 100644
--- a/compiler/src/dmd/aggregate.h
+++ b/compiler/src/dmd/aggregate.h
@@ -46,6 +46,7 @@ namespace dmd
     FuncDeclaration *search_toString(StructDeclaration *sd);
     void semanticTypeInfoMembers(StructDeclaration *sd);
     bool fill(StructDeclaration* sd, Loc loc, Expressions &elements, bool ctorinit);
+    bool isFuncHidden(ClassDeclaration* cd, FuncDeclaration* fd);
 }
 
 enum class ClassKind : uint8_t
@@ -287,7 +288,6 @@ public:
     bool isBaseInfoComplete();
     void finalizeSize() override;
     bool hasMonitor();
-    bool isFuncHidden(FuncDeclaration *fd);
     bool isCOMclass() const;
     virtual bool isCOMinterface() const;
     bool isCPPclass() const;
diff --git a/compiler/src/dmd/cxxfrontend.d b/compiler/src/dmd/cxxfrontend.d
index 6ba7545193..7f1a7424b1 100644
--- a/compiler/src/dmd/cxxfrontend.d
+++ b/compiler/src/dmd/cxxfrontend.d
@@ -15,6 +15,7 @@ import dmd.arraytypes;
 import dmd.astenums;
 import dmd.attrib;
 import dmd.common.outbuffer : OutBuffer;
+import dmd.dclass : ClassDeclaration;
 import dmd.denum : EnumDeclaration;
 import dmd.dmodule /*: Module*/;
 import dmd.dscope : Scope;
@@ -178,6 +179,12 @@ Dsymbols* include(Dsymbol d, Scope* sc)
     return dmd.dsymbolsem.include(d, sc);
 }
 
+bool isFuncHidden(ClassDeclaration cd, FuncDeclaration fd)
+{
+    import dmd.dsymbolsem;
+    return dmd.dsymbolsem.isFuncHidden(cd, fd);
+}
+
 /***********************************************************
  * dtemplate.d
  */
diff --git a/compiler/src/dmd/dclass.d b/compiler/src/dmd/dclass.d
index 12e815533c..d3732223e3 100644
--- a/compiler/src/dmd/dclass.d
+++ b/compiler/src/dmd/dclass.d
@@ -23,7 +23,7 @@ import dmd.gluelayer;
 import dmd.declaration;
 import dmd.dscope;
 import dmd.dsymbol;
-import dmd.dsymbolsem : dsymbolSemantic, addMember, search, setFieldOffset;
+import dmd.dsymbolsem : dsymbolSemantic, addMember, setFieldOffset;
 import dmd.errors;
 import dmd.func;
 import dmd.id;
@@ -614,40 +614,6 @@ extern (C++) class ClassDeclaration : AggregateDeclaration
         return classKind == ClassKind.d;
     }
 
-    final bool isFuncHidden(FuncDeclaration fd)
-    {
-        import dmd.funcsem : overloadApply;
-        //printf("ClassDeclaration.isFuncHidden(class = %s, fd = %s)\n", toChars(), fd.toPrettyChars());
-        Dsymbol s = this.search(Loc.initial, fd.ident, SearchOpt.ignoreAmbiguous | SearchOpt.ignoreErrors);
-        if (!s)
-        {
-            //printf("not found\n");
-            /* Because, due to a hack, if there are multiple definitions
-             * of fd.ident, NULL is returned.
-             */
-            return false;
-        }
-        s = s.toAlias();
-        if (auto os = s.isOverloadSet())
-        {
-            foreach (sm; os.a)
-            {
-                auto fm = sm.isFuncDeclaration();
-                if (overloadApply(fm, s => fd == s.isFuncDeclaration()))
-                    return false;
-            }
-            return true;
-        }
-        else
-        {
-            auto f = s.isFuncDeclaration();
-            //printf("%s fdstart = %p\n", s.kind(), fdstart);
-            if (overloadApply(f, s => fd == s.isFuncDeclaration()))
-                return false;
-            return !fd.parent.isTemplateMixin();
-        }
-    }
-
     /****************
      * Find virtual function matching identifier and type.
      * Used to build virtual function tables for interface implementations.
diff --git a/compiler/src/dmd/dsymbolsem.d b/compiler/src/dmd/dsymbolsem.d
index c401601166..63b9e693d0 100644
--- a/compiler/src/dmd/dsymbolsem.d
+++ b/compiler/src/dmd/dsymbolsem.d
@@ -8160,3 +8160,37 @@ private extern(C++) class HasStaticCtorOrDtor : Visitor
         result = true;
     }
 }
+
+extern(C++) bool isFuncHidden(ClassDeclaration cd, FuncDeclaration fd)
+{
+    import dmd.funcsem : overloadApply;
+    //printf("ClassDeclaration.isFuncHidden(class = %s, fd = %s)\n", toChars(), fd.toPrettyChars());
+    Dsymbol s = cd.search(Loc.initial, fd.ident, SearchOpt.ignoreAmbiguous | SearchOpt.ignoreErrors);
+    if (!s)
+    {
+        //printf("not found\n");
+        /* Because, due to a hack, if there are multiple definitions
+            * of fd.ident, NULL is returned.
+            */
+        return false;
+    }
+    s = s.toAlias();
+    if (auto os = s.isOverloadSet())
+    {
+        foreach (sm; os.a)
+        {
+            auto fm = sm.isFuncDeclaration();
+            if (overloadApply(fm, s => fd == s.isFuncDeclaration()))
+                return false;
+        }
+        return true;
+    }
+    else
+    {
+        auto f = s.isFuncDeclaration();
+        //printf("%s fdstart = %p\n", s.kind(), fdstart);
+        if (overloadApply(f, s => fd == s.isFuncDeclaration()))
+            return false;
+        return !fd.parent.isTemplateMixin();
+    }
+}
diff --git a/compiler/src/dmd/frontend.h b/compiler/src/dmd/frontend.h
index 6fa7f01249..f7a25afbc9 100644
--- a/compiler/src/dmd/frontend.h
+++ b/compiler/src/dmd/frontend.h
@@ -6680,7 +6680,6 @@ public:
     bool isBaseInfoComplete() const;
     void finalizeSize() final override;
     bool hasMonitor();
-    bool isFuncHidden(FuncDeclaration* fd);
     bool isCOMclass() const;
     virtual bool isCOMinterface() const;
     bool isCPPclass() const;
@@ -7546,6 +7545,8 @@ public:
 
 extern bool hasStaticCtorOrDtor(Dsymbol* d);
 
+extern bool isFuncHidden(ClassDeclaration* cd, FuncDeclaration* fd);
+
 extern void lowerNonArrayAggregate(StaticForeach* sfe, Scope* sc);
 
 class NrvoWalker final : public StatementRewriteWalker
diff --git a/compiler/src/dmd/toobj.d b/compiler/src/dmd/toobj.d
index 28ed2ea0f3..872970e03d 100644
--- a/compiler/src/dmd/toobj.d
+++ b/compiler/src/dmd/toobj.d
@@ -35,7 +35,7 @@ import dmd.dmodule;
 import dmd.dscope;
 import dmd.dstruct;
 import dmd.dsymbol;
-import dmd.dsymbolsem : include, hasStaticCtorOrDtor;
+import dmd.dsymbolsem : hasStaticCtorOrDtor, include, isFuncHidden;
 import dmd.dtemplate;
 import dmd.errors;
 import dmd.errorsink;
diff --git a/compiler/src/tests/cxxfrontend.cc b/compiler/src/tests/cxxfrontend.cc
index ca92758f53..7dd769952c 100644
--- a/compiler/src/tests/cxxfrontend.cc
+++ b/compiler/src/tests/cxxfrontend.cc
@@ -1323,7 +1323,7 @@ public:
                 continue;
             if (!dmd::functionSemantic(fd))
                 return;
-            if (!d->isFuncHidden(fd) || fd->isFuture())
+            if (!dmd::isFuncHidden(d, fd) || fd->isFuture())
                 continue;
             for (size_t j = 1; j < d->vtbl.length; j++)
             {