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//===--------------------- BackendPrinter.cpp -------------------*- 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 implements the BackendPrinter interface.
///
//===----------------------------------------------------------------------===//
#include "BackendPrinter.h"
#include "View.h"
#include "llvm/CodeGen/TargetSchedule.h"
namespace mca {
using namespace llvm;
void BackendPrinter::printGeneralStatistics(raw_ostream &OS,
unsigned Iterations,
unsigned Cycles,
unsigned Instructions,
unsigned DispatchWidth) const {
unsigned TotalInstructions = Instructions * Iterations;
double IPC = (double)TotalInstructions / Cycles;
std::string Buffer;
raw_string_ostream TempStream(Buffer);
TempStream << "Iterations: " << Iterations;
TempStream << "\nInstructions: " << TotalInstructions;
TempStream << "\nTotal Cycles: " << Cycles;
TempStream << "\nDispatch Width: " << DispatchWidth;
TempStream << "\nIPC: " << format("%.2f", IPC) << '\n';
TempStream.flush();
OS << Buffer;
}
void BackendPrinter::printInstructionInfo(raw_ostream &OS) const {
std::string Buffer;
raw_string_ostream TempStream(Buffer);
TempStream << "\n\nInstruction Info:\n";
TempStream << "[1]: #uOps\n[2]: Latency\n[3]: RThroughput\n"
<< "[4]: MayLoad\n[5]: MayStore\n[6]: HasSideEffects\n\n";
TempStream << "[1] [2] [3] [4] [5] [6]\tInstructions:\n";
for (unsigned I = 0, E = B.getNumInstructions(); I < E; ++I) {
const MCInst &Inst = B.getMCInstFromIndex(I);
const InstrDesc &ID = B.getInstrDesc(Inst);
unsigned NumMicroOpcodes = ID.NumMicroOps;
unsigned Latency = ID.MaxLatency;
double RThroughput = B.getRThroughput(ID);
TempStream << ' ' << NumMicroOpcodes << " ";
if (NumMicroOpcodes < 10)
TempStream << " ";
else if (NumMicroOpcodes < 100)
TempStream << ' ';
TempStream << Latency << " ";
if (Latency < 10.0)
TempStream << " ";
else if (Latency < 100.0)
TempStream << ' ';
if (RThroughput) {
TempStream << format("%.2f", RThroughput) << ' ';
if (RThroughput < 10.0)
TempStream << " ";
else if (RThroughput < 100.0)
TempStream << ' ';
} else {
TempStream << " - ";
}
TempStream << (ID.MayLoad ? " * " : " ");
TempStream << (ID.MayStore ? " * " : " ");
TempStream << (ID.HasSideEffects ? " * " : " ");
MCIP.printInst(&Inst, TempStream, "", B.getSTI());
TempStream << '\n';
}
TempStream.flush();
OS << Buffer;
}
void BackendPrinter::printReport(llvm::raw_ostream &OS) const {
unsigned Cycles = B.getNumCycles();
printGeneralStatistics(OS, B.getNumIterations(), Cycles, B.getNumInstructions(),
B.getDispatchWidth());
printInstructionInfo(OS);
for (const auto &V : Views)
V->printView(OS);
}
} // namespace mca.
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