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//===--------------------- BackendStatistics.cpp ---------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
/// \file
///
/// Functionalities used by the BackendPrinter to print out histograms
/// related to number of {dispatch/issue/retire} per number of cycles.
///
//===----------------------------------------------------------------------===//
#include "BackendStatistics.h"
#include "llvm/Support/Format.h"
using namespace llvm;
namespace mca {
void BackendStatistics::printRetireUnitStatistics(llvm::raw_ostream &OS) const {
std::string Buffer;
raw_string_ostream TempStream(Buffer);
TempStream << "\n\nRetire Control Unit - "
<< "number of cycles where we saw N instructions retired:\n";
TempStream << "[# retired], [# cycles]\n";
for (const std::pair<unsigned, unsigned> &Entry : RetiredPerCycle) {
TempStream << " " << Entry.first;
if (Entry.first < 10)
TempStream << ", ";
else
TempStream << ", ";
TempStream << Entry.second << " ("
<< format("%.1f", ((double)Entry.second / NumCycles) * 100.0)
<< "%)\n";
}
TempStream.flush();
OS << Buffer;
}
void BackendStatistics::printDispatchUnitStatistics(llvm::raw_ostream &OS) const {
std::string Buffer;
raw_string_ostream TempStream(Buffer);
TempStream << "\n\nDispatch Logic - "
<< "number of cycles where we saw N instructions dispatched:\n";
TempStream << "[# dispatched], [# cycles]\n";
for (const std::pair<unsigned, unsigned> &Entry : DispatchGroupSizePerCycle) {
TempStream << " " << Entry.first << ", " << Entry.second
<< " ("
<< format("%.1f", ((double)Entry.second / NumCycles) * 100.0)
<< "%)\n";
}
TempStream.flush();
OS << Buffer;
}
void BackendStatistics::printSchedulerStatistics(llvm::raw_ostream &OS) const {
std::string Buffer;
raw_string_ostream TempStream(Buffer);
TempStream << "\n\nSchedulers - number of cycles where we saw N instructions "
"issued:\n";
TempStream << "[# issued], [# cycles]\n";
for (const std::pair<unsigned, unsigned> &Entry : IssuedPerCycle) {
TempStream << " " << Entry.first << ", " << Entry.second << " ("
<< format("%.1f", ((double)Entry.second / NumCycles) * 100)
<< "%)\n";
}
TempStream.flush();
OS << Buffer;
}
} // namespace mca
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