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diff --git a/llvm/utils/TableGen/Basic/TargetFeaturesEmitter.h b/llvm/utils/TableGen/Basic/TargetFeaturesEmitter.h
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index 000000000000..99e4820c614c
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+++ b/llvm/utils/TableGen/Basic/TargetFeaturesEmitter.h
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+//===- TargetFeaturesEmitter.h- Generate CPU Target features ----===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Defines the TargetFeaturesEmitter class, which is used to export
+// CPU target features and CPU subtypes.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_UTILS_TABLEGEN_BASIC_EMITTARGETFEATURE_H
+#define LLVM_UTILS_TABLEGEN_BASIC_EMITTARGETFEATURE_H
+
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/TableGen/Record.h"
+
+namespace llvm {
+/// Sorting predicate to sort record pointers by their
+/// FieldName field.
+struct LessRecordFieldFieldName {
+  bool operator()(const Record *Rec1, const Record *Rec2) const {
+    return Rec1->getValueAsString("FieldName") <
+           Rec2->getValueAsString("FieldName");
+  }
+};
+
+using FeatureMapTy = DenseMap<const Record *, unsigned>;
+
+class TargetFeaturesEmitter {
+protected:
+  const RecordKeeper &Records;
+  std::string Target;
+
+public:
+  TargetFeaturesEmitter(const RecordKeeper &R);
+  static void printFeatureMask(raw_ostream &OS,
+                               ArrayRef<const Record *> FeatureList,
+                               const FeatureMapTy &FeatureMap);
+  FeatureMapTy enumeration(raw_ostream &OS);
+  void printFeatureKeyValues(raw_ostream &OS, const FeatureMapTy &FeatureMap);
+  void printCPUKeyValues(raw_ostream &OS, const FeatureMapTy &FeatureMap);
+  virtual void run(raw_ostream &O);
+  virtual ~TargetFeaturesEmitter() {};
+};
+} // namespace llvm
+#endif