Type traits intrinsic implementation: __is_base_of(T, U)
New AST node introduced: BinaryTypeTraitExpr; to be reused for more intrinsics.

llvm-svn: 121074
diff --git a/clang/lib/CodeGen/Mangle.cpp b/clang/lib/CodeGen/Mangle.cpp
index 24790b8..b955732 100644
--- a/clang/lib/CodeGen/Mangle.cpp
+++ b/clang/lib/CodeGen/Mangle.cpp
@@ -1664,6 +1664,7 @@
   case Expr::StmtExprClass:
   case Expr::TypesCompatibleExprClass:
   case Expr::UnaryTypeTraitExprClass:
+  case Expr::BinaryTypeTraitExprClass:
   case Expr::VAArgExprClass:
   case Expr::CXXUuidofExprClass:
   case Expr::CXXNoexceptExprClass: {