diff --git a/clang/lib/CodeGen/CodeGenModule.h b/clang/lib/CodeGen/CodeGenModule.h
index 35e94d7..5d146da 100644
--- a/clang/lib/CodeGen/CodeGenModule.h
+++ b/clang/lib/CodeGen/CodeGenModule.h
@@ -1243,6 +1243,10 @@
   void EmitOMPDeclareReduction(const OMPDeclareReductionDecl *D,
                                CodeGenFunction *CGF = nullptr);
 
+  /// Emit a code for declare mapper construct.
+  void EmitOMPDeclareMapper(const OMPDeclareMapperDecl *D,
+                            CodeGenFunction *CGF = nullptr);
+
   /// Emit a code for requires directive.
   /// \param D Requires declaration
   void EmitOMPRequiresDecl(const OMPRequiresDecl *D);