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diff --git a/llvm/tools/llvm-mca/Views/RetireControlUnitStatistics.h b/llvm/tools/llvm-mca/Views/RetireControlUnitStatistics.h
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+++ b/llvm/tools/llvm-mca/Views/RetireControlUnitStatistics.h
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+//===--------------------- RetireControlUnitStatistics.h --------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+/// \file
+///
+/// This file defines class RetireControlUnitStatistics: a view that knows how
+/// to print general statistics related to the retire control unit.
+///
+/// Example:
+/// ========
+///
+/// Retire Control Unit - number of cycles where we saw N instructions retired:
+/// [# retired], [# cycles]
+///  0,           109  (17.9%)
+///  1,           102  (16.7%)
+///  2,           399  (65.4%)
+///
+/// Total ROB Entries:                64
+/// Max Used ROB Entries:             35  ( 54.7% )
+/// Average Used ROB Entries per cy:  32  ( 50.0% )
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_MCA_RETIRECONTROLUNITSTATISTICS_H
+#define LLVM_TOOLS_LLVM_MCA_RETIRECONTROLUNITSTATISTICS_H
+
+#include "Views/View.h"
+#include "llvm/MC/MCSchedule.h"
+#include <map>
+
+namespace llvm {
+namespace mca {
+
+class RetireControlUnitStatistics : public View {
+  using Histogram = std::map<unsigned, unsigned>;
+  Histogram RetiredPerCycle;
+
+  unsigned NumRetired;
+  unsigned NumCycles;
+  unsigned TotalROBEntries;
+  unsigned EntriesInUse;
+  unsigned MaxUsedEntries;
+  unsigned SumOfUsedEntries;
+
+public:
+  RetireControlUnitStatistics(const MCSchedModel &SM);
+
+  void onEvent(const HWInstructionEvent &Event) override;
+  void onCycleEnd() override;
+  void printView(llvm::raw_ostream &OS) const override;
+};
+
+} // namespace mca
+} // namespace llvm
+
+#endif