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📄 AArch64TargetParser.cpp(8 KB)
📄 ABIBreak.cpp(811 B)
📄 AMDGPUMetadata.cpp(9.37 KB)
📄 APFloat.cpp(155.26 KB)
📄 APInt.cpp(98.08 KB)
📄 APSInt.cpp(1.44 KB)
📄 ARMAttributeParser.cpp(13.94 KB)
📄 ARMBuildAttrs.cpp(3.45 KB)
📄 ARMTargetParser.cpp(18.09 KB)
📄 ARMWinEH.cpp(1.08 KB)
📄 Allocator.cpp(1.35 KB)
📄 Atomic.cpp(1.6 KB)
📄 BinaryStreamError.cpp(1.76 KB)
📄 BinaryStreamReader.cpp(5.24 KB)
📄 BinaryStreamRef.cpp(4.76 KB)
📄 BinaryStreamWriter.cpp(3.36 KB)
📄 BlockFrequency.cpp(2.12 KB)
📄 BranchProbability.cpp(3.44 KB)
📄 BuryPointer.cpp(1.11 KB)
📄 COM.cpp(737 B)
📄 COPYRIGHT.regex(2.65 KB)
📄 CRC.cpp(5.23 KB)
📄 CachePruning.cpp(10.33 KB)
📄 Chrono.cpp(3.17 KB)
📄 CodeGenCoverage.cpp(3.61 KB)
📄 CommandLine.cpp(89.06 KB)
📄 Compression.cpp(3.84 KB)
📄 ConvertUTF.cpp(27.27 KB)
📄 ConvertUTFWrapper.cpp(8.66 KB)
📄 CrashRecoveryContext.cpp(15.45 KB)
📄 DAGDeltaAlgorithm.cpp(12.47 KB)
📄 DJB.cpp(2.71 KB)
📄 DataExtractor.cpp(7.25 KB)
📄 Debug.cpp(5.64 KB)
📄 DebugCounter.cpp(4.95 KB)
📄 DeltaAlgorithm.cpp(3.41 KB)
📄 DynamicLibrary.cpp(6.25 KB)
📄 ELFAttributeParser.cpp(7.27 KB)
📄 ELFAttributes.cpp(1.27 KB)
📄 Errno.cpp(2.18 KB)
📄 Error.cpp(4.72 KB)
📄 ErrorHandling.cpp(11.08 KB)
📄 ExtensibleRTTI.cpp(446 B)
📄 FileCheck.cpp(95.77 KB)
📄 FileCheckImpl.h(34.14 KB)
📄 FileCollector.cpp(9.01 KB)
📄 FileOutputBuffer.cpp(6.62 KB)
📄 FileUtilities.cpp(10.81 KB)
📄 FoldingSet.cpp(15.89 KB)
📄 FormatVariadic.cpp(5.17 KB)
📄 FormattedStream.cpp(5.29 KB)
📄 GlobPattern.cpp(5 KB)
📄 GraphWriter.cpp(9.21 KB)
📄 Hashing.cpp(1.16 KB)
📄 Host.cpp(51.63 KB)
📄 InitLLVM.cpp(1.92 KB)
📄 IntEqClasses.cpp(2.18 KB)
📄 IntervalMap.cpp(4.4 KB)
📄 ItaniumManglingCanonicalizer.cpp(10.77 KB)
📄 JSON.cpp(19.1 KB)
📄 KnownBits.cpp(3.78 KB)
📄 LEB128.cpp(1.19 KB)
📄 LineIterator.cpp(2.61 KB)
📄 Locale.cpp(377 B)
📄 LockFileManager.cpp(10.64 KB)
📄 LowLevelType.cpp(2.09 KB)
📄 MD5.cpp(8.99 KB)
📄 ManagedStatic.cpp(2.37 KB)
📄 MathExtras.cpp(913 B)
📄 MemAlloc.cpp(1.01 KB)
📄 Memory.cpp(1.57 KB)
📄 MemoryBuffer.cpp(18.99 KB)
📄 NativeFormatting.cpp(7.54 KB)
📄 OptimizedStructLayout.cpp(16.7 KB)
📄 Optional.cpp(530 B)
📄 Parallel.cpp(5.08 KB)
📄 Path.cpp(36.52 KB)
📄 PluginLoader.cpp(1.63 KB)
📄 PrettyStackTrace.cpp(10.33 KB)
📄 Process.cpp(3.27 KB)
📄 Program.cpp(3.54 KB)
📄 RISCVAttributeParser.cpp(2.06 KB)
📄 RISCVAttributes.cpp(970 B)
📄 RWMutex.cpp(3.23 KB)
📄 RandomNumberGenerator.cpp(2.86 KB)
📄 Regex.cpp(6.38 KB)
📄 SHA1.cpp(10.43 KB)
📄 ScaledNumber.cpp(9.09 KB)
📄 ScopedPrinter.cpp(1.19 KB)
📄 Signals.cpp(8.35 KB)
📄 Signposts.cpp(3.24 KB)
📄 SmallPtrSet.cpp(9.21 KB)
📄 SmallVector.cpp(3.99 KB)
📄 SourceMgr.cpp(20.08 KB)
📄 SpecialCaseList.cpp(7.48 KB)
📄 Statistic.cpp(8.85 KB)
📄 StringExtras.cpp(4.34 KB)
📄 StringMap.cpp(9.31 KB)
📄 StringRef.cpp(17.41 KB)
📄 StringSaver.cpp(882 B)
📄 SuffixTree.cpp(7.23 KB)
📄 SymbolRemappingReader.cpp(2.94 KB)
📄 SystemUtils.cpp(1.06 KB)
📄 TarWriter.cpp(7.23 KB)
📄 TargetParser.cpp(9.86 KB)
📄 TargetRegistry.cpp(4.6 KB)
📄 ThreadLocal.cpp(1.68 KB)
📄 ThreadPool.cpp(4.4 KB)
📄 Threading.cpp(4.55 KB)
📄 TimeProfiler.cpp(11.63 KB)
📄 Timer.cpp(14.14 KB)
📄 ToolOutputFile.cpp(1.83 KB)
📄 TrigramIndex.cpp(3.24 KB)
📄 Triple.cpp(53.17 KB)
📄 Twine.cpp(4.6 KB)
📄 Unicode.cpp(20.14 KB)
📄 UnicodeCaseFold.cpp(15.32 KB)
📁 Unix
📄 Valgrind.cpp(1.6 KB)
📄 VersionTuple.cpp(2.74 KB)
📄 VirtualFileSystem.cpp(74.17 KB)
📄 Watchdog.cpp(738 B)
📁 Windows
📄 WithColor.cpp(4.35 KB)
📄 X86TargetParser.cpp(27.21 KB)
📄 YAMLParser.cpp(68.53 KB)
📄 YAMLTraits.cpp(28.37 KB)
📄 Z3Solver.cpp(31.44 KB)
📄 circular_raw_ostream.cpp(1.3 KB)
📄 raw_os_ostream.cpp(995 B)
📄 raw_ostream.cpp(28.97 KB)
📄 regcomp.c(39.42 KB)
📄 regengine.inc(26.49 KB)
📄 regerror.c(4.42 KB)
📄 regex2.h(6.82 KB)
📄 regex_impl.h(3.63 KB)
📄 regexec.c(5.71 KB)
📄 regfree.c(2.49 KB)
📄 regstrlcpy.c(1.56 KB)
📄 regutils.h(2.25 KB)
📄 xxhash.cpp(4.07 KB)

Editing: Statistic.cpp

//===-- Statistic.cpp - Easy way to expose stats information --------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file implements the 'Statistic' class, which is designed to be an easy
// way to expose various success metrics from passes.  These statistics are
// printed at the end of a run, when the -stats command line option is enabled
// on the command line.
//
// This is useful for reporting information like the number of instructions
// simplified, optimized or removed by various transformations, like this:
//
// static Statistic NumInstEliminated("GCSE", "Number of instructions killed");
//
// Later, in the code: ++NumInstEliminated;
//
//===----------------------------------------------------------------------===//

#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/Mutex.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cstring>
using namespace llvm;

/// -stats - Command line option to cause transformations to emit stats about
/// what they did.
///
static cl::opt<bool> EnableStats(
    "stats",
    cl::desc("Enable statistics output from program (available with Asserts)"),
    cl::Hidden);

static cl::opt<bool> StatsAsJSON("stats-json",
                                 cl::desc("Display statistics as json data"),
                                 cl::Hidden);

static bool Enabled;
static bool PrintOnExit;

namespace {
/// This class is used in a ManagedStatic so that it is created on demand (when
/// the first statistic is bumped) and destroyed only when llvm_shutdown is
/// called. We print statistics from the destructor.
/// This class is also used to look up statistic values from applications that
/// use LLVM.
class StatisticInfo {
  std::vector<TrackingStatistic *> Stats;

friend void llvm::PrintStatistics();
  friend void llvm::PrintStatistics(raw_ostream &OS);
  friend void llvm::PrintStatisticsJSON(raw_ostream &OS);

/// Sort statistics by debugtype,name,description.
  void sort();
public:
  using const_iterator = std::vector<TrackingStatistic *>::const_iterator;

StatisticInfo();
  ~StatisticInfo();

void addStatistic(TrackingStatistic *S) { Stats.push_back(S); }

const_iterator begin() const { return Stats.begin(); }
  const_iterator end() const { return Stats.end(); }
  iterator_range<const_iterator> statistics() const {
    return {begin(), end()};
  }

void reset();
};
} // end anonymous namespace

static ManagedStatic<StatisticInfo> StatInfo;
static ManagedStatic<sys::SmartMutex<true> > StatLock;

/// RegisterStatistic - The first time a statistic is bumped, this method is
/// called.
void TrackingStatistic::RegisterStatistic() {
  // If stats are enabled, inform StatInfo that this statistic should be
  // printed.
  // llvm_shutdown calls destructors while holding the ManagedStatic mutex.
  // These destructors end up calling PrintStatistics, which takes StatLock.
  // Since dereferencing StatInfo and StatLock can require taking the
  // ManagedStatic mutex, doing so with StatLock held would lead to a lock
  // order inversion. To avoid that, we dereference the ManagedStatics first,
  // and only take StatLock afterwards.
  if (!Initialized.load(std::memory_order_relaxed)) {
    sys::SmartMutex<true> &Lock = *StatLock;
    StatisticInfo &SI = *StatInfo;
    sys::SmartScopedLock<true> Writer(Lock);
    // Check Initialized again after acquiring the lock.
    if (Initialized.load(std::memory_order_relaxed))
      return;
    if (EnableStats || Enabled)
      SI.addStatistic(this);

// Remember we have been registered.
    Initialized.store(true, std::memory_order_release);
  }
}

StatisticInfo::StatisticInfo() {
  // Ensure timergroup lists are created first so they are destructed after us.
  TimerGroup::ConstructTimerLists();
}

// Print information when destroyed, iff command line option is specified.
StatisticInfo::~StatisticInfo() {
  if (EnableStats || PrintOnExit)
    llvm::PrintStatistics();
}

void llvm::EnableStatistics(bool DoPrintOnExit) {
  Enabled = true;
  PrintOnExit = DoPrintOnExit;
}

bool llvm::AreStatisticsEnabled() {
  return Enabled || EnableStats;
}

void StatisticInfo::sort() {
  llvm::stable_sort(
      Stats, [](const TrackingStatistic *LHS, const TrackingStatistic *RHS) {
        if (int Cmp = std::strcmp(LHS->getDebugType(), RHS->getDebugType()))
          return Cmp < 0;

if (int Cmp = std::strcmp(LHS->getName(), RHS->getName()))
          return Cmp < 0;

return std::strcmp(LHS->getDesc(), RHS->getDesc()) < 0;
      });
}

void StatisticInfo::reset() {
  sys::SmartScopedLock<true> Writer(*StatLock);

// Tell each statistic that it isn't registered so it has to register
  // again. We're holding the lock so it won't be able to do so until we're
  // finished. Once we've forced it to re-register (after we return), then zero
  // the value.
  for (auto *Stat : Stats) {
    // Value updates to a statistic that complete before this statement in the
    // iteration for that statistic will be lost as intended.
    Stat->Initialized = false;
    Stat->Value = 0;
  }

// Clear the registration list and release the lock once we're done. Any
  // pending updates from other threads will safely take effect after we return.
  // That might not be what the user wants if they're measuring a compilation
  // but it's their responsibility to prevent concurrent compilations to make
  // a single compilation measurable.
  Stats.clear();
}

void llvm::PrintStatistics(raw_ostream &OS) {
  StatisticInfo &Stats = *StatInfo;

// Figure out how long the biggest Value and Name fields are.
  unsigned MaxDebugTypeLen = 0, MaxValLen = 0;
  for (size_t i = 0, e = Stats.Stats.size(); i != e; ++i) {
    MaxValLen = std::max(MaxValLen,
                         (unsigned)utostr(Stats.Stats[i]->getValue()).size());
    MaxDebugTypeLen = std::max(MaxDebugTypeLen,
                         (unsigned)std::strlen(Stats.Stats[i]->getDebugType()));
  }

Stats.sort();

// Print out the statistics header...
  OS << "===" << std::string(73, '-') << "===\n"
     << "                          ... Statistics Collected ...\n"
     << "===" << std::string(73, '-') << "===\n\n";

// Print all of the statistics.
  for (size_t i = 0, e = Stats.Stats.size(); i != e; ++i)
    OS << format("%*u %-*s - %s\n",
                 MaxValLen, Stats.Stats[i]->getValue(),
                 MaxDebugTypeLen, Stats.Stats[i]->getDebugType(),
                 Stats.Stats[i]->getDesc());

OS << '\n';  // Flush the output stream.
  OS.flush();
}

void llvm::PrintStatisticsJSON(raw_ostream &OS) {
  sys::SmartScopedLock<true> Reader(*StatLock);
  StatisticInfo &Stats = *StatInfo;

Stats.sort();

// Print all of the statistics.
  OS << "{\n";
  const char *delim = "";
  for (const TrackingStatistic *Stat : Stats.Stats) {
    OS << delim;
    assert(yaml::needsQuotes(Stat->getDebugType()) == yaml::QuotingType::None &&
           "Statistic group/type name is simple.");
    assert(yaml::needsQuotes(Stat->getName()) == yaml::QuotingType::None &&
           "Statistic name is simple");
    OS << "\t\"" << Stat->getDebugType() << '.' << Stat->getName() << "\": "
       << Stat->getValue();
    delim = ",\n";
  }
  // Print timers.
  TimerGroup::printAllJSONValues(OS, delim);

OS << "\n}\n";
  OS.flush();
}

void llvm::PrintStatistics() {
#if LLVM_ENABLE_STATS
  sys::SmartScopedLock<true> Reader(*StatLock);
  StatisticInfo &Stats = *StatInfo;

// Statistics not enabled?
  if (Stats.Stats.empty()) return;

// Get the stream to write to.
  std::unique_ptr<raw_ostream> OutStream = CreateInfoOutputFile();
  if (StatsAsJSON)
    PrintStatisticsJSON(*OutStream);
  else
    PrintStatistics(*OutStream);

#else
  // Check if the -stats option is set instead of checking
  // !Stats.Stats.empty().  In release builds, Statistics operators
  // do nothing, so stats are never Registered.
  if (EnableStats) {
    // Get the stream to write to.
    std::unique_ptr<raw_ostream> OutStream = CreateInfoOutputFile();
    (*OutStream) << "Statistics are disabled.  "
                 << "Build with asserts or with -DLLVM_FORCE_ENABLE_STATS\n";
  }
#endif
}

const std::vector<std::pair<StringRef, unsigned>> llvm::GetStatistics() {
  sys::SmartScopedLock<true> Reader(*StatLock);
  std::vector<std::pair<StringRef, unsigned>> ReturnStats;

for (const auto &Stat : StatInfo->statistics())
    ReturnStats.emplace_back(Stat->getName(), Stat->getValue());
  return ReturnStats;
}

void llvm::ResetStatistics() {
  StatInfo->reset();
}

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Editing: Statistic.cpp

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