From a789997cb1baf24fff5d99ee4d1b99f4e3f4b1a6 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Fri, 8 May 2020 14:53:10 +0100
Subject: [PATCH] DFAEmitter.h - remove unnecessary headers. NFC.

Reduce StringRef.h include to forward declaration and add implicit SmallVector.h and <map> include dependencies.
---
 utils/TableGen/DFAEmitter.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/utils/TableGen/DFAEmitter.h b/utils/TableGen/DFAEmitter.h
index f7724ce06ba..44e5d97d544 100644
--- a/utils/TableGen/DFAEmitter.h
+++ b/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.
 ///