Merge System into Support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index b4c9682..269b936 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -25,7 +25,7 @@
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/PassNameParser.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Signals.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/IRReader.h"
#include "llvm/Support/ManagedStatic.h"