//===--------------------- RetireControlUnitStatistics.h --------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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/// \file
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///
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/// This file defines class RetireControlUnitStatistics: a view that knows how
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/// to print general statistics related to the retire control unit.
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///
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/// Example:
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/// ========
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///
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/// Retire Control Unit - number of cycles where we saw N instructions retired:
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/// [# retired], [# cycles]
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/// 0, 9 (6.9%)
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/// 1, 6 (4.6%)
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/// 2, 1 (0.8%)
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/// 4, 3 (2.3%)
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLVM_MCA_RETIRECONTROLUNITSTATISTICS_H
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#define LLVM_TOOLS_LLVM_MCA_RETIRECONTROLUNITSTATISTICS_H
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#include "View.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include <map>
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namespace mca {
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class RetireControlUnitStatistics : public View {
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using Histogram = std::map<unsigned, unsigned>;
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Histogram RetiredPerCycle;
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unsigned NumRetired;
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unsigned NumCycles;
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void updateHistograms() {
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RetiredPerCycle[NumRetired]++;
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NumRetired = 0;
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}
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public:
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RetireControlUnitStatistics() : NumRetired(0), NumCycles(0) {}
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void onEvent(const HWInstructionEvent &Event) override;
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void onCycleBegin() override { NumCycles++; }
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void onCycleEnd() override { updateHistograms(); }
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void printView(llvm::raw_ostream &OS) const override;
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};
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} // namespace mca
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#endif
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