Implement most of dynamic_cast.  WIP.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88901 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprScalar.cpp b/lib/CodeGen/CGExprScalar.cpp
index d36eb07..f81aae9 100644
--- a/lib/CodeGen/CGExprScalar.cpp
+++ b/lib/CodeGen/CGExprScalar.cpp
@@ -852,6 +852,12 @@
     Value *Src = Visit(const_cast<Expr*>(E));
     return Builder.CreatePtrToInt(Src, ConvertType(DestTy));
   }
+
+  case CastExpr::CK_Dynamic: {
+    Value *V = Visit(const_cast<Expr*>(E));
+    const CXXDynamicCastExpr *DCE = cast<CXXDynamicCastExpr>(CE);
+    return CGF.EmitDynamicCast(V, DCE);
+  }
   
   }