Now LoopUnswitch is a LoopPass.

llvm-svn: 34992
diff --git a/llvm/tools/opt/opt.cpp b/llvm/tools/opt/opt.cpp
index 24dab74..14dd158 100644
--- a/llvm/tools/opt/opt.cpp
+++ b/llvm/tools/opt/opt.cpp
@@ -18,6 +18,7 @@
 #include "llvm/Bytecode/WriteBytecodePass.h"
 #include "llvm/Assembly/PrintModulePass.h"
 #include "llvm/Analysis/Verifier.h"
+#include "llvm/Analysis/LoopPass.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Support/PassNameParser.h"