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//===--------------------- RetireControlUnitStatistics.h ------------------*-
//C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
/// \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, 9 (6.9%)
/// 1, 6 (4.6%)
/// 2, 1 (0.8%)
/// 4, 3 (2.3%)
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_MCA_RETIRECONTROLUNITSTATISTICS_H
#define LLVM_TOOLS_LLVM_MCA_RETIRECONTROLUNITSTATISTICS_H
#include "View.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/MC/MCSubtargetInfo.h"
namespace mca {
class RetireControlUnitStatistics : public View {
using Histogram = llvm::DenseMap<unsigned, unsigned>;
Histogram RetiredPerCycle;
unsigned NumRetired;
unsigned NumCycles;
void updateHistograms() {
RetiredPerCycle[NumRetired]++;
NumRetired = 0;
}
public:
RetireControlUnitStatistics() : NumRetired(0), NumCycles(0) {}
void onInstructionEvent(const HWInstructionEvent &Event) override;
void onCycleBegin(unsigned Cycle) override { NumCycles++; }
void onCycleEnd(unsigned Cycle) override { updateHistograms(); }
void printView(llvm::raw_ostream &OS) const override;
};
} // namespace mca
#endif
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