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📄 AggressiveAntiDepBreaker.cpp(37.23 KB)
📄 AggressiveAntiDepBreaker.h(6.8 KB)
📄 AllocationOrder.cpp(1.96 KB)
📄 AllocationOrder.h(2.96 KB)
📄 Analysis.cpp(32.62 KB)
📁 AsmPrinter
📄 AtomicExpandPass.cpp(71.86 KB)
📄 BBSectionsPrepare.cpp(18.8 KB)
📄 BasicTargetTransformInfo.cpp(1.53 KB)
📄 BranchFolding.cpp(77.92 KB)
📄 BranchFolding.h(7.36 KB)
📄 BranchRelaxation.cpp(19.45 KB)
📄 BreakFalseDeps.cpp(9.79 KB)
📄 BuiltinGCs.cpp(4.88 KB)
📄 CFGuardLongjmp.cpp(3.73 KB)
📄 CFIInstrInserter.cpp(17.53 KB)
📄 CalcSpillWeights.cpp(10.22 KB)
📄 CallingConvLower.cpp(10.4 KB)
📄 CodeGen.cpp(5.28 KB)
📄 CodeGenPrepare.cpp(295.01 KB)
📄 CommandFlags.cpp(24.89 KB)
📄 CriticalAntiDepBreaker.cpp(27.91 KB)
📄 CriticalAntiDepBreaker.h(4.22 KB)
📄 DFAPacketizer.cpp(10.91 KB)
📄 DeadMachineInstructionElim.cpp(6.52 KB)
📄 DetectDeadLanes.cpp(20.74 KB)
📄 DwarfEHPrepare.cpp(9.01 KB)
📄 EarlyIfConversion.cpp(37.51 KB)
📄 EdgeBundles.cpp(3.21 KB)
📄 ExecutionDomainFix.cpp(14.67 KB)
📄 ExpandMemCmp.cpp(33.66 KB)
📄 ExpandPostRAPseudos.cpp(7.28 KB)
📄 ExpandReductions.cpp(7.23 KB)
📄 FEntryInserter.cpp(1.81 KB)
📄 FaultMaps.cpp(4.99 KB)
📄 FinalizeISel.cpp(2.65 KB)
📄 FixupStatepointCallerSaved.cpp(11.06 KB)
📄 FuncletLayout.cpp(2.21 KB)
📄 GCMetadata.cpp(5.1 KB)
📄 GCMetadataPrinter.cpp(748 B)
📄 GCRootLowering.cpp(11.46 KB)
📄 GCStrategy.cpp(708 B)
📁 GlobalISel
📄 GlobalMerge.cpp(24.52 KB)
📄 HardwareLoops.cpp(18.44 KB)
📄 IfConversion.cpp(89.43 KB)
📄 ImplicitNullChecks.cpp(25.14 KB)
📄 IndirectBrExpandPass.cpp(7.79 KB)
📄 InlineSpiller.cpp(58.24 KB)
📄 InterferenceCache.cpp(8.83 KB)
📄 InterferenceCache.h(7.22 KB)
📄 InterleavedAccessPass.cpp(16.59 KB)
📄 InterleavedLoadCombinePass.cpp(42.35 KB)
📄 IntrinsicLowering.cpp(17.08 KB)
📄 LLVMTargetMachine.cpp(10.25 KB)
📄 LatencyPriorityQueue.cpp(5.64 KB)
📄 LazyMachineBlockFrequencyInfo.cpp(3.36 KB)
📄 LexicalScopes.cpp(12.16 KB)
📄 LiveDebugValues.cpp(78.98 KB)
📄 LiveDebugVariables.cpp(51.79 KB)
📄 LiveDebugVariables.h(2.15 KB)
📄 LiveInterval.cpp(46.67 KB)
📄 LiveIntervalCalc.cpp(7.62 KB)
📄 LiveIntervalUnion.cpp(6.36 KB)
📄 LiveIntervals.cpp(64.59 KB)
📄 LivePhysRegs.cpp(11.08 KB)
📄 LiveRangeCalc.cpp(15.72 KB)
📄 LiveRangeEdit.cpp(17.03 KB)
📄 LiveRangeShrink.cpp(8.69 KB)
📄 LiveRangeUtils.h(2.12 KB)
📄 LiveRegMatrix.cpp(7.47 KB)
📄 LiveRegUnits.cpp(4.72 KB)
📄 LiveStacks.cpp(2.95 KB)
📄 LiveVariables.cpp(30.26 KB)
📄 LocalStackSlotAllocation.cpp(17.26 KB)
📄 LoopTraversal.cpp(2.89 KB)
📄 LowLevelType.cpp(1.93 KB)
📄 LowerEmuTLS.cpp(5.66 KB)
📄 MBFIWrapper.cpp(1.57 KB)
📄 MIRCanonicalizerPass.cpp(12.46 KB)
📄 MIRNamerPass.cpp(2.16 KB)
📁 MIRParser
📄 MIRPrinter.cpp(32.67 KB)
📄 MIRPrintingPass.cpp(1.99 KB)
📄 MIRVRegNamerUtils.cpp(6.04 KB)
📄 MIRVRegNamerUtils.h(3.25 KB)
📄 MachineBasicBlock.cpp(50.47 KB)
📄 MachineBlockFrequencyInfo.cpp(10.13 KB)
📄 MachineBlockPlacement.cpp(137.61 KB)
📄 MachineBranchProbabilityInfo.cpp(3.5 KB)
📄 MachineCSE.cpp(31.82 KB)
📄 MachineCombiner.cpp(28.13 KB)
📄 MachineCopyPropagation.cpp(29.21 KB)
📄 MachineDebugify.cpp(6.47 KB)
📄 MachineDominanceFrontier.cpp(1.83 KB)
📄 MachineDominators.cpp(4.86 KB)
📄 MachineFrameInfo.cpp(9.77 KB)
📄 MachineFunction.cpp(42.97 KB)
📄 MachineFunctionPass.cpp(4.78 KB)
📄 MachineFunctionPrinterPass.cpp(2.3 KB)
📄 MachineInstr.cpp(76.39 KB)
📄 MachineInstrBundle.cpp(11.49 KB)
📄 MachineLICM.cpp(57.05 KB)
📄 MachineLoopInfo.cpp(4.98 KB)
📄 MachineLoopUtils.cpp(5.16 KB)
📄 MachineModuleInfo.cpp(9.9 KB)
📄 MachineModuleInfoImpls.cpp(1.5 KB)
📄 MachineOperand.cpp(39.6 KB)
📄 MachineOptimizationRemarkEmitter.cpp(3.29 KB)
📄 MachineOutliner.cpp(42.13 KB)
📄 MachinePipeliner.cpp(111.33 KB)
📄 MachinePostDominators.cpp(2.42 KB)
📄 MachineRegionInfo.cpp(4.75 KB)
📄 MachineRegisterInfo.cpp(22.97 KB)
📄 MachineSSAUpdater.cpp(12.99 KB)
📄 MachineScheduler.cpp(136.89 KB)
📄 MachineSink.cpp(51.94 KB)
📄 MachineSizeOpts.cpp(8.76 KB)
📄 MachineStripDebug.cpp(3.76 KB)
📄 MachineTraceMetrics.cpp(49.58 KB)
📄 MachineVerifier.cpp(107.98 KB)
📄 MacroFusion.cpp(7.55 KB)
📄 ModuloSchedule.cpp(85.09 KB)
📄 NonRelocatableStringpool.cpp(1.65 KB)
📄 OptimizePHIs.cpp(6.7 KB)
📄 PHIElimination.cpp(27.73 KB)
📄 PHIEliminationUtils.cpp(2.56 KB)
📄 PHIEliminationUtils.h(972 B)
📄 ParallelCG.cpp(3.71 KB)
📄 PatchableFunction.cpp(3.44 KB)
📄 PeepholeOptimizer.cpp(78.41 KB)
📄 PostRAHazardRecognizer.cpp(3.5 KB)
📄 PostRASchedulerList.cpp(24.31 KB)
📄 PreISelIntrinsicLowering.cpp(7.91 KB)
📄 ProcessImplicitDefs.cpp(5.4 KB)
📄 PrologEpilogInserter.cpp(50.45 KB)
📄 PseudoSourceValue.cpp(4.71 KB)
📄 RDFGraph.cpp(58.39 KB)
📄 RDFLiveness.cpp(40.7 KB)
📄 RDFRegisters.cpp(11.29 KB)
📄 ReachingDefAnalysis.cpp(21.74 KB)
📄 RegAllocBase.cpp(6.31 KB)
📄 RegAllocBase.h(4.63 KB)
📄 RegAllocBasic.cpp(11.33 KB)
📄 RegAllocFast.cpp(45.78 KB)
📄 RegAllocGreedy.cpp(123.32 KB)
📄 RegAllocPBQP.cpp(33.14 KB)
📄 RegUsageInfoCollector.cpp(7.39 KB)
📄 RegUsageInfoPropagate.cpp(5.07 KB)
📄 RegisterClassInfo.cpp(6.62 KB)
📄 RegisterCoalescer.cpp(151.71 KB)
📄 RegisterCoalescer.h(4.04 KB)
📄 RegisterPressure.cpp(48.86 KB)
📄 RegisterScavenging.cpp(27.48 KB)
📄 RegisterUsageInfo.cpp(3.18 KB)
📄 RenameIndependentSubregs.cpp(14.79 KB)
📄 ResetMachineFunctionPass.cpp(3.48 KB)
📄 SafeStack.cpp(34.12 KB)
📄 SafeStackLayout.cpp(5.3 KB)
📄 SafeStackLayout.h(2.41 KB)
📄 ScalarizeMaskedMemIntrin.cpp(31.46 KB)
📄 ScheduleDAG.cpp(21.34 KB)
📄 ScheduleDAGInstrs.cpp(54.59 KB)
📄 ScheduleDAGPrinter.cpp(3.21 KB)
📄 ScoreboardHazardRecognizer.cpp(7.96 KB)
📁 SelectionDAG
📄 ShadowStackGCLowering.cpp(14.16 KB)
📄 ShrinkWrap.cpp(23.03 KB)
📄 SjLjEHPrepare.cpp(18.93 KB)
📄 SlotIndexes.cpp(9.35 KB)
📄 SpillPlacement.cpp(12.58 KB)
📄 SpillPlacement.h(6.67 KB)
📄 SplitKit.cpp(66.39 KB)
📄 SplitKit.h(23.7 KB)
📄 StackColoring.cpp(49.03 KB)
📄 StackMapLivenessAnalysis.cpp(6.16 KB)
📄 StackMaps.cpp(19.74 KB)
📄 StackProtector.cpp(22.94 KB)
📄 StackSlotColoring.cpp(17.12 KB)
📄 SwiftErrorValueTracking.cpp(11.37 KB)
📄 SwitchLoweringUtils.cpp(18.33 KB)
📄 TailDuplication.cpp(3.32 KB)
📄 TailDuplicator.cpp(38.29 KB)
📄 TargetFrameLoweringImpl.cpp(6.24 KB)
📄 TargetInstrInfo.cpp(51.1 KB)
📄 TargetLoweringBase.cpp(82.53 KB)
📄 TargetLoweringObjectFileImpl.cpp(80.52 KB)
📄 TargetOptionsImpl.cpp(2 KB)
📄 TargetPassConfig.cpp(48.89 KB)
📄 TargetRegisterInfo.cpp(19.15 KB)
📄 TargetSchedule.cpp(13.16 KB)
📄 TargetSubtargetInfo.cpp(1.89 KB)
📄 TwoAddressInstructionPass.cpp(62.08 KB)
📄 TypePromotion.cpp(32.46 KB)
📄 UnreachableBlockElim.cpp(7.48 KB)
📄 ValueTypes.cpp(19.87 KB)
📄 VirtRegMap.cpp(21.4 KB)
📄 WasmEHPrepare.cpp(17.48 KB)
📄 WinEHPrepare.cpp(51.16 KB)
📄 XRayInstrumentation.cpp(9.66 KB)

Editing: MachineBlockFrequencyInfo.cpp

//===- MachineBlockFrequencyInfo.cpp - MBB Frequency Analysis -------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Loops should be simplified before this analysis.
//
//===----------------------------------------------------------------------===//

#include "llvm/CodeGen/MachineBlockFrequencyInfo.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/None.h"
#include "llvm/ADT/iterator.h"
#include "llvm/Analysis/BlockFrequencyInfoImpl.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineBranchProbabilityInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/GraphWriter.h"
#include <string>

using namespace llvm;

#define DEBUG_TYPE "machine-block-freq"

static cl::opt<GVDAGType> ViewMachineBlockFreqPropagationDAG(
    "view-machine-block-freq-propagation-dags", cl::Hidden,
    cl::desc("Pop up a window to show a dag displaying how machine block "
             "frequencies propagate through the CFG."),
    cl::values(clEnumValN(GVDT_None, "none", "do not display graphs."),
               clEnumValN(GVDT_Fraction, "fraction",
                          "display a graph using the "
                          "fractional block frequency representation."),
               clEnumValN(GVDT_Integer, "integer",
                          "display a graph using the raw "
                          "integer fractional block frequency representation."),
               clEnumValN(GVDT_Count, "count", "display a graph using the real "
                                               "profile count if available.")));

// Similar option above, but used to control BFI display only after MBP pass
cl::opt<GVDAGType> ViewBlockLayoutWithBFI(
    "view-block-layout-with-bfi", cl::Hidden,
    cl::desc(
        "Pop up a window to show a dag displaying MBP layout and associated "
        "block frequencies of the CFG."),
    cl::values(clEnumValN(GVDT_None, "none", "do not display graphs."),
               clEnumValN(GVDT_Fraction, "fraction",
                          "display a graph using the "
                          "fractional block frequency representation."),
               clEnumValN(GVDT_Integer, "integer",
                          "display a graph using the raw "
                          "integer fractional block frequency representation."),
               clEnumValN(GVDT_Count, "count",
                          "display a graph using the real "
                          "profile count if available.")));

// Command line option to specify the name of the function for CFG dump
// Defined in Analysis/BlockFrequencyInfo.cpp:  -view-bfi-func-name=
extern cl::opt<std::string> ViewBlockFreqFuncName;

// Command line option to specify hot frequency threshold.
// Defined in Analysis/BlockFrequencyInfo.cpp:  -view-hot-freq-perc=
extern cl::opt<unsigned> ViewHotFreqPercent;

static cl::opt<bool> PrintMachineBlockFreq(
    "print-machine-bfi", cl::init(false), cl::Hidden,
    cl::desc("Print the machine block frequency info."));

// Command line option to specify the name of the function for block frequency
// dump. Defined in Analysis/BlockFrequencyInfo.cpp.
extern cl::opt<std::string> PrintBlockFreqFuncName;

static GVDAGType getGVDT() {
  if (ViewBlockLayoutWithBFI != GVDT_None)
    return ViewBlockLayoutWithBFI;

return ViewMachineBlockFreqPropagationDAG;
}

namespace llvm {

template <> struct GraphTraits<MachineBlockFrequencyInfo *> {
  using NodeRef = const MachineBasicBlock *;
  using ChildIteratorType = MachineBasicBlock::const_succ_iterator;
  using nodes_iterator = pointer_iterator<MachineFunction::const_iterator>;

static NodeRef getEntryNode(const MachineBlockFrequencyInfo *G) {
    return &G->getFunction()->front();
  }

static ChildIteratorType child_begin(const NodeRef N) {
    return N->succ_begin();
  }

static ChildIteratorType child_end(const NodeRef N) { return N->succ_end(); }

static nodes_iterator nodes_begin(const MachineBlockFrequencyInfo *G) {
    return nodes_iterator(G->getFunction()->begin());
  }

static nodes_iterator nodes_end(const MachineBlockFrequencyInfo *G) {
    return nodes_iterator(G->getFunction()->end());
  }
};

using MBFIDOTGraphTraitsBase =
    BFIDOTGraphTraitsBase<MachineBlockFrequencyInfo,
                          MachineBranchProbabilityInfo>;

template <>
struct DOTGraphTraits<MachineBlockFrequencyInfo *>
    : public MBFIDOTGraphTraitsBase {
  const MachineFunction *CurFunc = nullptr;
  DenseMap<const MachineBasicBlock *, int> LayoutOrderMap;

explicit DOTGraphTraits(bool isSimple = false)
      : MBFIDOTGraphTraitsBase(isSimple) {}

std::string getNodeLabel(const MachineBasicBlock *Node,
                           const MachineBlockFrequencyInfo *Graph) {
    int layout_order = -1;
    // Attach additional ordering information if 'isSimple' is false.
    if (!isSimple()) {
      const MachineFunction *F = Node->getParent();
      if (!CurFunc || F != CurFunc) {
        if (CurFunc)
          LayoutOrderMap.clear();

CurFunc = F;
        int O = 0;
        for (auto MBI = F->begin(); MBI != F->end(); ++MBI, ++O) {
          LayoutOrderMap[&*MBI] = O;
        }
      }
      layout_order = LayoutOrderMap[Node];
    }
    return MBFIDOTGraphTraitsBase::getNodeLabel(Node, Graph, getGVDT(),
                                                layout_order);
  }

std::string getNodeAttributes(const MachineBasicBlock *Node,
                                const MachineBlockFrequencyInfo *Graph) {
    return MBFIDOTGraphTraitsBase::getNodeAttributes(Node, Graph,
                                                     ViewHotFreqPercent);
  }

std::string getEdgeAttributes(const MachineBasicBlock *Node, EdgeIter EI,
                                const MachineBlockFrequencyInfo *MBFI) {
    return MBFIDOTGraphTraitsBase::getEdgeAttributes(
        Node, EI, MBFI, MBFI->getMBPI(), ViewHotFreqPercent);
  }
};

} // end namespace llvm

INITIALIZE_PASS_BEGIN(MachineBlockFrequencyInfo, DEBUG_TYPE,
                      "Machine Block Frequency Analysis", true, true)
INITIALIZE_PASS_DEPENDENCY(MachineBranchProbabilityInfo)
INITIALIZE_PASS_DEPENDENCY(MachineLoopInfo)
INITIALIZE_PASS_END(MachineBlockFrequencyInfo, DEBUG_TYPE,
                    "Machine Block Frequency Analysis", true, true)

char MachineBlockFrequencyInfo::ID = 0;

MachineBlockFrequencyInfo::MachineBlockFrequencyInfo()
    : MachineFunctionPass(ID) {
  initializeMachineBlockFrequencyInfoPass(*PassRegistry::getPassRegistry());
}

MachineBlockFrequencyInfo::MachineBlockFrequencyInfo(
      MachineFunction &F,
      MachineBranchProbabilityInfo &MBPI,
      MachineLoopInfo &MLI) : MachineFunctionPass(ID) {
  calculate(F, MBPI, MLI);
}

MachineBlockFrequencyInfo::~MachineBlockFrequencyInfo() = default;

void MachineBlockFrequencyInfo::getAnalysisUsage(AnalysisUsage &AU) const {
  AU.addRequired<MachineBranchProbabilityInfo>();
  AU.addRequired<MachineLoopInfo>();
  AU.setPreservesAll();
  MachineFunctionPass::getAnalysisUsage(AU);
}

void MachineBlockFrequencyInfo::calculate(
    const MachineFunction &F, const MachineBranchProbabilityInfo &MBPI,
    const MachineLoopInfo &MLI) {
  if (!MBFI)
    MBFI.reset(new ImplType);
  MBFI->calculate(F, MBPI, MLI);
  if (ViewMachineBlockFreqPropagationDAG != GVDT_None &&
      (ViewBlockFreqFuncName.empty() ||
       F.getName().equals(ViewBlockFreqFuncName))) {
    view("MachineBlockFrequencyDAGS." + F.getName());
  }
  if (PrintMachineBlockFreq &&
      (PrintBlockFreqFuncName.empty() ||
       F.getName().equals(PrintBlockFreqFuncName))) {
    MBFI->print(dbgs());
  }
}

bool MachineBlockFrequencyInfo::runOnMachineFunction(MachineFunction &F) {
  MachineBranchProbabilityInfo &MBPI =
      getAnalysis<MachineBranchProbabilityInfo>();
  MachineLoopInfo &MLI = getAnalysis<MachineLoopInfo>();
  calculate(F, MBPI, MLI);
  return false;
}

void MachineBlockFrequencyInfo::releaseMemory() { MBFI.reset(); }

/// Pop up a ghostview window with the current block frequency propagation
/// rendered using dot.
void MachineBlockFrequencyInfo::view(const Twine &Name, bool isSimple) const {
  // This code is only for debugging.
  ViewGraph(const_cast<MachineBlockFrequencyInfo *>(this), Name, isSimple);
}

BlockFrequency
MachineBlockFrequencyInfo::getBlockFreq(const MachineBasicBlock *MBB) const {
  return MBFI ? MBFI->getBlockFreq(MBB) : 0;
}

Optional<uint64_t> MachineBlockFrequencyInfo::getBlockProfileCount(
    const MachineBasicBlock *MBB) const {
  const Function &F = MBFI->getFunction()->getFunction();
  return MBFI ? MBFI->getBlockProfileCount(F, MBB) : None;
}

Optional<uint64_t>
MachineBlockFrequencyInfo::getProfileCountFromFreq(uint64_t Freq) const {
  const Function &F = MBFI->getFunction()->getFunction();
  return MBFI ? MBFI->getProfileCountFromFreq(F, Freq) : None;
}

bool
MachineBlockFrequencyInfo::isIrrLoopHeader(const MachineBasicBlock *MBB) {
  assert(MBFI && "Expected analysis to be available");
  return MBFI->isIrrLoopHeader(MBB);
}

void MachineBlockFrequencyInfo::setBlockFreq(const MachineBasicBlock *MBB,
                                             uint64_t Freq) {
  assert(MBFI && "Expected analysis to be available");
  MBFI->setBlockFreq(MBB, Freq);
}

const MachineFunction *MachineBlockFrequencyInfo::getFunction() const {
  return MBFI ? MBFI->getFunction() : nullptr;
}

const MachineBranchProbabilityInfo *MachineBlockFrequencyInfo::getMBPI() const {
  return MBFI ? &MBFI->getBPI() : nullptr;
}

raw_ostream &
MachineBlockFrequencyInfo::printBlockFreq(raw_ostream &OS,
                                          const BlockFrequency Freq) const {
  return MBFI ? MBFI->printBlockFreq(OS, Freq) : OS;
}

raw_ostream &
MachineBlockFrequencyInfo::printBlockFreq(raw_ostream &OS,
                                          const MachineBasicBlock *MBB) const {
  return MBFI ? MBFI->printBlockFreq(OS, MBB) : OS;
}

uint64_t MachineBlockFrequencyInfo::getEntryFreq() const {
  return MBFI ? MBFI->getEntryFreq() : 0;
}

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Editing: MachineBlockFrequencyInfo.cpp

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