forked from OSchip/llvm-project
91 lines
3.5 KiB
C++
91 lines
3.5 KiB
C++
//===--------------------- SummaryView.cpp -------------------*- 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 implements the functionalities used by the SummaryView to print
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/// the report information.
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///
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//===----------------------------------------------------------------------===//
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#include "Views/SummaryView.h"
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#include "Support.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/Support/Format.h"
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namespace mca {
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#define DEBUG_TYPE "llvm-mca"
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using namespace llvm;
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SummaryView::SummaryView(const MCSchedModel &Model, ArrayRef<MCInst> S,
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unsigned Width)
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: SM(Model), Source(S), DispatchWidth(Width), TotalCycles(0),
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LastInstructionIdx(0), NumMicroOps(0),
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ProcResourceUsage(Model.getNumProcResourceKinds(), 0) {
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computeProcResourceMasks(SM, ProcResourceMasks);
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}
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void SummaryView::onEvent(const HWInstructionEvent &Event) {
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if (Event.Type == HWInstructionEvent::Dispatched)
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LastInstructionIdx = Event.IR.getSourceIndex();
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// We are only interested in the "instruction retired" events generated by
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// the retire stage for instructions that are part of iteration #0.
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if (Event.Type != HWInstructionEvent::Retired ||
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Event.IR.getSourceIndex() >= Source.size())
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return;
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// Update the cumulative number of resource cycles based on the processor
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// resource usage information available from the instruction descriptor. We
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// need to compute the cumulative number of resource cycles for every
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// processor resource which is consumed by an instruction of the block.
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const Instruction &Inst = *Event.IR.getInstruction();
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const InstrDesc &Desc = Inst.getDesc();
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NumMicroOps += Desc.NumMicroOps;
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for (const std::pair<uint64_t, const ResourceUsage> &RU : Desc.Resources) {
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if (RU.second.size()) {
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const auto It = find(ProcResourceMasks, RU.first);
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assert(It != ProcResourceMasks.end() &&
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"Invalid processor resource mask!");
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ProcResourceUsage[std::distance(ProcResourceMasks.begin(), It)] +=
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RU.second.size();
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}
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}
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}
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void SummaryView::printView(raw_ostream &OS) const {
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unsigned Instructions = Source.size();
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unsigned Iterations = (LastInstructionIdx / Instructions) + 1;
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unsigned TotalInstructions = Instructions * Iterations;
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unsigned TotalUOps = NumMicroOps * Iterations;
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double IPC = (double)TotalInstructions / TotalCycles;
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double UOpsPerCycle = (double)TotalUOps / TotalCycles;
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double BlockRThroughput = computeBlockRThroughput(
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SM, DispatchWidth, NumMicroOps, ProcResourceUsage);
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std::string Buffer;
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raw_string_ostream TempStream(Buffer);
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TempStream << "Iterations: " << Iterations;
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TempStream << "\nInstructions: " << TotalInstructions;
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TempStream << "\nTotal Cycles: " << TotalCycles;
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TempStream << "\nTotal uOps: " << TotalUOps << '\n';
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TempStream << "\nDispatch Width: " << DispatchWidth;
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TempStream << "\nuOps Per Cycle: "
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<< format("%.2f", floor((UOpsPerCycle * 100) + 0.5) / 100);
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TempStream << "\nIPC: "
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<< format("%.2f", floor((IPC * 100) + 0.5) / 100);
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TempStream << "\nBlock RThroughput: "
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<< format("%.1f", floor((BlockRThroughput * 10) + 0.5) / 10)
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<< '\n';
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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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