1 //===--------------------- DispatchStatistics.cpp ---------------------*- C++ 2 //-*-===// 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is distributed under the University of Illinois Open Source 7 // License. See LICENSE.TXT for details. 8 // 9 //===----------------------------------------------------------------------===// 10 /// \file 11 /// 12 /// This file implements the DispatchStatistics interface. 13 /// 14 //===----------------------------------------------------------------------===// 15 16 #include "DispatchStatistics.h" 17 #include "llvm/Support/Format.h" 18 19 using namespace llvm; 20 21 namespace mca { 22 23 void DispatchStatistics::onEvent(const HWStallEvent &Event) { 24 if (Event.Type < HWStallEvent::LastGenericEvent) 25 HWStalls[Event.Type]++; 26 } 27 28 void DispatchStatistics::onEvent(const HWInstructionEvent &Event) { 29 if (Event.Type == HWInstructionEvent::Dispatched) 30 ++NumDispatched; 31 } 32 33 void DispatchStatistics::printDispatchHistogram(llvm::raw_ostream &OS) const { 34 std::string Buffer; 35 raw_string_ostream TempStream(Buffer); 36 TempStream << "\n\nDispatch Logic - " 37 << "number of cycles where we saw N instructions dispatched:\n"; 38 TempStream << "[# dispatched], [# cycles]\n"; 39 for (const std::pair<unsigned, unsigned> &Entry : DispatchGroupSizePerCycle) { 40 TempStream << " " << Entry.first << ", " << Entry.second 41 << " (" 42 << format("%.1f", ((double)Entry.second / NumCycles) * 100.0) 43 << "%)\n"; 44 } 45 46 TempStream.flush(); 47 OS << Buffer; 48 } 49 50 void DispatchStatistics::printDispatchStalls(raw_ostream &OS) const { 51 std::string Buffer; 52 raw_string_ostream TempStream(Buffer); 53 TempStream << "\n\nDynamic Dispatch Stall Cycles:\n"; 54 TempStream << "RAT - Register unavailable: " 55 << HWStalls[HWStallEvent::RegisterFileStall]; 56 TempStream << "\nRCU - Retire tokens unavailable: " 57 << HWStalls[HWStallEvent::RetireControlUnitStall]; 58 TempStream << "\nSCHEDQ - Scheduler full: " 59 << HWStalls[HWStallEvent::SchedulerQueueFull]; 60 TempStream << "\nLQ - Load queue full: " 61 << HWStalls[HWStallEvent::LoadQueueFull]; 62 TempStream << "\nSQ - Store queue full: " 63 << HWStalls[HWStallEvent::StoreQueueFull]; 64 TempStream << "\nGROUP - Static restrictions on the dispatch group: " 65 << HWStalls[HWStallEvent::DispatchGroupStall]; 66 TempStream << '\n'; 67 TempStream.flush(); 68 OS << Buffer; 69 } 70 71 } // namespace mca 72
