Implement derived-to-base AST/code gen. There is a
FIXME in CGCXX.cpp that I would like Anders to
take a look at.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84265 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 398b413..8ebe5ef 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -3552,6 +3552,10 @@
   bool PerformImplicitConversion(Expr *&From, QualType ToType,
                                  const StandardConversionSequence& SCS,
                                  const char *Flavor);
+  
+  bool BuildCXXDerivedToBaseExpr(Expr *&From, CastExpr::CastKind CastKind,
+                                 const ImplicitConversionSequence& ICS,
+                                 const char *Flavor);
 
   /// the following "Check" methods will return a valid/converted QualType
   /// or a null QualType (indicating an error diagnostic was issued).