New common interface for backends to use


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7625 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/TableGenBackend.cpp b/utils/TableGen/TableGenBackend.cpp
new file mode 100644
index 0000000..f00c6ee
--- /dev/null
+++ b/utils/TableGen/TableGenBackend.cpp
@@ -0,0 +1,17 @@
+//===- TableGenBackend.cpp - Base class for TableGen Backends ---*- C++ -*-===//
+//
+// This file provides useful services for TableGen backends...
+//
+//===----------------------------------------------------------------------===//
+
+#include "TableGenBackend.h"
+#include <iostream>
+
+void TableGenBackend::EmitSourceFileHeader(const std::string &Desc,
+                                           std::ostream &OS) {
+  OS << "//===- TableGen'erated file -------------------------------------*-"
+       " C++ -*-===//\n//\n// " << Desc << "\n//\n// Automatically generate"
+       "d file, do not edit!\n//\n//===------------------------------------"
+       "----------------------------------===//\n\n";
+}
+