1 files changed, 5 insertions, 5 deletions
diff --git a/llvm/utils/TableGen/DFAEmitter.h b/llvm/utils/TableGen/DFAEmitter.h
index 76de8f72cd88e..44e5d97d544ff 100644
--- a/llvm/utils/TableGen/DFAEmitter.h
+++ b/llvm/utils/TableGen/DFAEmitter.h
@@ -17,16 +17,16 @@
 #ifndef LLVM_UTILS_TABLEGEN_DFAEMITTER_H
 #define LLVM_UTILS_TABLEGEN_DFAEMITTER_H
 
-#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/UniqueVector.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/TableGen/Record.h"
+#include <map>
 #include <set>
-#include <unordered_map>
 
 namespace llvm {
 
 class raw_ostream;
+class StringRef;
+
 /// Construct a deterministic finite state automaton from possible
 /// nondeterministic state and transition data.
 ///
@@ -99,7 +99,7 @@ private:
   void constructDfa();
   /// Visit a single DFA state and construct all possible transitions to new DFA
   /// states.
-  void visitDfaState(DfaState DS);
+  void visitDfaState(const DfaState &DS);
 };
 
 } // namespace llvm