92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
//===--------------------- InstructionInfoView.cpp --------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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/// \file
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///
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/// This file implements the InstructionInfoView API.
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///
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//===----------------------------------------------------------------------===//
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#include "Views/InstructionInfoView.h"
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namespace llvm {
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namespace mca {
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void InstructionInfoView::printView(raw_ostream &OS) const {
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std::string Buffer;
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raw_string_ostream TempStream(Buffer);
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const MCSchedModel &SM = STI.getSchedModel();
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std::string Instruction;
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raw_string_ostream InstrStream(Instruction);
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TempStream << "\n\nInstruction Info:\n";
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TempStream << "[1]: #uOps\n[2]: Latency\n[3]: RThroughput\n"
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<< "[4]: MayLoad\n[5]: MayStore\n[6]: HasSideEffects (U)\n\n";
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TempStream << "[1] [2] [3] [4] [5] [6] Instructions:\n";
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for (const MCInst &Inst : Source) {
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const MCInstrDesc &MCDesc = MCII.get(Inst.getOpcode());
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// Obtain the scheduling class information from the instruction.
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unsigned SchedClassID = MCDesc.getSchedClass();
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unsigned CPUID = SM.getProcessorID();
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// Try to solve variant scheduling classes.
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while (SchedClassID && SM.getSchedClassDesc(SchedClassID)->isVariant())
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SchedClassID = STI.resolveVariantSchedClass(SchedClassID, &Inst, CPUID);
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const MCSchedClassDesc &SCDesc = *SM.getSchedClassDesc(SchedClassID);
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unsigned NumMicroOpcodes = SCDesc.NumMicroOps;
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unsigned Latency = MCSchedModel::computeInstrLatency(STI, SCDesc);
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// Add extra latency due to delays in the forwarding data paths.
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Latency += MCSchedModel::getForwardingDelayCycles(
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STI.getReadAdvanceEntries(SCDesc));
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Optional<double> RThroughput =
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MCSchedModel::getReciprocalThroughput(STI, SCDesc);
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TempStream << ' ' << NumMicroOpcodes << " ";
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if (NumMicroOpcodes < 10)
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TempStream << " ";
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else if (NumMicroOpcodes < 100)
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TempStream << ' ';
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TempStream << Latency << " ";
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if (Latency < 10)
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TempStream << " ";
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else if (Latency < 100)
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TempStream << ' ';
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if (RThroughput.hasValue()) {
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double RT = RThroughput.getValue();
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TempStream << format("%.2f", RT) << ' ';
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if (RT < 10.0)
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TempStream << " ";
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else if (RT < 100.0)
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TempStream << ' ';
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} else {
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TempStream << " - ";
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}
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TempStream << (MCDesc.mayLoad() ? " * " : " ");
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TempStream << (MCDesc.mayStore() ? " * " : " ");
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TempStream << (MCDesc.hasUnmodeledSideEffects() ? " U " : " ");
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MCIP.printInst(&Inst, InstrStream, "", STI);
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InstrStream.flush();
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// Consume any tabs or spaces at the beginning of the string.
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StringRef Str(Instruction);
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Str = Str.ltrim();
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TempStream << " " << Str << '\n';
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Instruction = "";
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}
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TempStream.flush();
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OS << Buffer;
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}
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} // namespace mca.
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} // namespace llvm
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