--- /dev/null
+//===- not.cpp - The 'not' testing tool -----------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/System/Path.h"
+#include "llvm/System/Program.h"
+using namespace llvm;
+
+int main(int argc, const char **argv) {
+ sys::Path Program = sys::Program::FindProgramByName(argv[1]);
+ return !sys::Program::ExecuteAndWait(Program, argv + 1);
+}