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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: CodeGenCoverage.cpp

//===- lib/Support/CodeGenCoverage.cpp -------------------------------------==//
//
// 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
//
//===----------------------------------------------------------------------===//
/// \file
/// This file implements the CodeGenCoverage class.
//===----------------------------------------------------------------------===//

#include "llvm/Support/CodeGenCoverage.h"

#include "llvm/Support/Endian.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Mutex.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Support/ToolOutputFile.h"

using namespace llvm;

static sys::SmartMutex<true> OutputMutex;

CodeGenCoverage::CodeGenCoverage() {}

void CodeGenCoverage::setCovered(uint64_t RuleID) {
  if (RuleCoverage.size() <= RuleID)
    RuleCoverage.resize(RuleID + 1, 0);
  RuleCoverage[RuleID] = true;
}

bool CodeGenCoverage::isCovered(uint64_t RuleID) const {
  if (RuleCoverage.size() <= RuleID)
    return false;
  return RuleCoverage[RuleID];
}

iterator_range<CodeGenCoverage::const_covered_iterator>
CodeGenCoverage::covered() const {
  return RuleCoverage.set_bits();
}

bool CodeGenCoverage::parse(MemoryBuffer &Buffer, StringRef BackendName) {
  const char *CurPtr = Buffer.getBufferStart();

while (CurPtr != Buffer.getBufferEnd()) {
    // Read the backend name from the input.
    const char *LexedBackendName = CurPtr;
    while (*CurPtr++ != 0)
      ;
    if (CurPtr == Buffer.getBufferEnd())
      return false; // Data is invalid, expected rule id's to follow.

bool IsForThisBackend = BackendName.equals(LexedBackendName);
    while (CurPtr != Buffer.getBufferEnd()) {
      if (std::distance(CurPtr, Buffer.getBufferEnd()) < 8)
        return false; // Data is invalid. Not enough bytes for another rule id.

uint64_t RuleID = support::endian::read64(CurPtr, support::native);
      CurPtr += 8;

// ~0ull terminates the rule id list.
      if (RuleID == ~0ull)
        break;

// Anything else, is recorded or ignored depending on whether it's
      // intended for the backend we're interested in.
      if (IsForThisBackend)
        setCovered(RuleID);
    }
  }

return true;
}

bool CodeGenCoverage::emit(StringRef CoveragePrefix,
                           StringRef BackendName) const {
  if (!CoveragePrefix.empty() && !RuleCoverage.empty()) {
    sys::SmartScopedLock<true> Lock(OutputMutex);

// We can handle locking within a process easily enough but we don't want to
    // manage it between multiple processes. Use the process ID to ensure no
    // more than one process is ever writing to the same file at the same time.
    std::string Pid = llvm::to_string(sys::Process::getProcessId());

std::string CoverageFilename = (CoveragePrefix + Pid).str();

std::error_code EC;
    sys::fs::OpenFlags OpenFlags = sys::fs::OF_Append;
    std::unique_ptr<ToolOutputFile> CoverageFile =
        std::make_unique<ToolOutputFile>(CoverageFilename, EC, OpenFlags);
    if (EC)
      return false;

uint64_t Zero = 0;
    uint64_t InvZero = ~0ull;
    CoverageFile->os() << BackendName;
    CoverageFile->os().write((const char *)&Zero, sizeof(unsigned char));
    for (uint64_t I : RuleCoverage.set_bits())
      CoverageFile->os().write((const char *)&I, sizeof(uint64_t));
    CoverageFile->os().write((const char *)&InvZero, sizeof(uint64_t));

CoverageFile->keep();
  }

return true;
}

void CodeGenCoverage::reset() { RuleCoverage.resize(0); }

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Editing: CodeGenCoverage.cpp

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