--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/llvm/CodeGen/GCs.h	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,41 @@
+//===-- GCs.h - Garbage collector linkage hacks ---------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains hack functions to force linking in the GC components.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_GCS_H
+#define LLVM_CODEGEN_GCS_H
+
+namespace llvm {
+  class GCStrategy;
+  class GCMetadataPrinter;
+  
+  /// FIXME: Collector instances are not useful on their own. These no longer
+  ///        serve any purpose except to link in the plugins.
+  
+  /// Creates an ocaml-compatible garbage collector.
+  void linkOcamlGC();
+  
+  /// Creates an ocaml-compatible metadata printer.
+  void linkOcamlGCPrinter();
+
+  /// Creates an erlang-compatible garbage collector.
+  void linkErlangGC();
+
+  /// Creates an erlang-compatible metadata printer.
+  void linkErlangGCPrinter();
+  
+  /// Creates a shadow stack garbage collector. This collector requires no code
+  /// generator support.
+  void linkShadowStackGC();
+}
+
+#endif