Mark implementation generated methods as artificial.
Tested by namespace.exp and virtfunc.exp from gdb testsuite.

llvm-svn: 108468
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index 513a1fe..d1de84f 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -600,7 +600,8 @@
                                   MethodDefUnit, MethodLine,
                                   MethodTy, /*isLocalToUnit=*/false, 
                                   /* isDefintion=*/ false,
-                                  Virtuality, VIndex, ContainingType);
+                                  Virtuality, VIndex, ContainingType,
+                                  Method->isImplicit());
   
   // Don't cache ctors or dtors since we have to emit multiple functions for
   // a single ctor or dtor.