[TableGen] Call llvm_shutdown on exit so that all the ManagedStatic objects in the support library will be deleted.

llvm-svn: 256732
diff --git a/llvm/utils/TableGen/TableGen.cpp b/llvm/utils/TableGen/TableGen.cpp
index c16a558..bcc594d 100644
--- a/llvm/utils/TableGen/TableGen.cpp
+++ b/llvm/utils/TableGen/TableGen.cpp
@@ -13,6 +13,7 @@
 
 #include "TableGenBackends.h" // Declares all backends.
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/TableGen/Error.h"
@@ -182,6 +183,8 @@
   PrettyStackTraceProgram X(argc, argv);
   cl::ParseCommandLineOptions(argc, argv);
 
+  llvm_shutdown_obj Y;
+
   return TableGenMain(argv[0], &LLVMTableGenMain);
 }