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72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
//===--------------------- DispatchStatistics.cpp ---------------------*- C++
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//-*-===//
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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 DispatchStatistics interface.
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///
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//===----------------------------------------------------------------------===//
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#include "DispatchStatistics.h"
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#include "llvm/Support/Format.h"
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using namespace llvm;
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namespace mca {
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void DispatchStatistics::onStallEvent(const HWStallEvent &Event) {
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if (Event.Type < HWStallEvent::LastGenericEvent)
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HWStalls[Event.Type]++;
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}
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void DispatchStatistics::onInstructionEvent(const HWInstructionEvent &Event) {
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if (Event.Type == HWInstructionEvent::Dispatched)
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++NumDispatched;
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}
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void DispatchStatistics::printDispatchHistogram(llvm::raw_ostream &OS) const {
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std::string Buffer;
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raw_string_ostream TempStream(Buffer);
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TempStream << "\n\nDispatch Logic - "
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<< "number of cycles where we saw N instructions dispatched:\n";
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TempStream << "[# dispatched], [# cycles]\n";
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for (const std::pair<unsigned, unsigned> &Entry : DispatchGroupSizePerCycle) {
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TempStream << " " << Entry.first << ", " << Entry.second
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<< " ("
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<< format("%.1f", ((double)Entry.second / NumCycles) * 100.0)
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<< "%)\n";
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}
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TempStream.flush();
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OS << Buffer;
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}
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void DispatchStatistics::printDispatchStalls(raw_ostream &OS) const {
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std::string Buffer;
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raw_string_ostream TempStream(Buffer);
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TempStream << "\n\nDynamic Dispatch Stall Cycles:\n";
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TempStream << "RAT - Register unavailable: "
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<< HWStalls[HWStallEvent::RegisterFileStall];
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TempStream << "\nRCU - Retire tokens unavailable: "
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<< HWStalls[HWStallEvent::RetireControlUnitStall];
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TempStream << "\nSCHEDQ - Scheduler full: "
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<< HWStalls[HWStallEvent::SchedulerQueueFull];
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TempStream << "\nLQ - Load queue full: "
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<< HWStalls[HWStallEvent::LoadQueueFull];
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TempStream << "\nSQ - Store queue full: "
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<< HWStalls[HWStallEvent::StoreQueueFull];
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TempStream << "\nGROUP - Static restrictions on the dispatch group: "
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<< HWStalls[HWStallEvent::DispatchGroupStall];
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TempStream << '\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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