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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 "llvm/MC/MCSchedule.h"
#include "llvm/MCA/View.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;
StringRef getNameAsString() const override {
return "RetireControlUnitStatistics";
}
bool isSerializable() const override { return false; }
};
} // namespace mca
} // namespace llvm
#endif
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