Coverage Report

Created: 2019-05-19 14:56

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/tools/llvm-cov/CodeCoverage.cpp
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//===- CodeCoverage.cpp - Coverage tool based on profiling instrumentation-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// The 'CodeCoverageTool' class implements a command line tool to analyze and
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// report coverage information using the profiling instrumentation and code
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// coverage mapping.
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//
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//===----------------------------------------------------------------------===//
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#include "CoverageExporterJson.h"
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#include "CoverageExporterLcov.h"
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#include "CoverageFilters.h"
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#include "CoverageReport.h"
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#include "CoverageSummaryInfo.h"
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#include "CoverageViewOptions.h"
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#include "RenderingSupport.h"
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#include "SourceCoverageView.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/ProfileData/Coverage/CoverageMapping.h"
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#include "llvm/ProfileData/InstrProfReader.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Process.h"
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#include "llvm/Support/Program.h"
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#include "llvm/Support/ScopedPrinter.h"
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#include "llvm/Support/ThreadPool.h"
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#include "llvm/Support/Threading.h"
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#include "llvm/Support/ToolOutputFile.h"
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#include <functional>
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#include <map>
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#include <system_error>
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using namespace llvm;
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using namespace coverage;
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void exportCoverageDataToJson(const coverage::CoverageMapping &CoverageMapping,
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                              const CoverageViewOptions &Options,
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                              raw_ostream &OS);
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namespace {
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/// The implementation of the coverage tool.
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class CodeCoverageTool {
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public:
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  enum Command {
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    /// The show command.
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    Show,
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    /// The report command.
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    Report,
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    /// The export command.
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    Export
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  };
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  int run(Command Cmd, int argc, const char **argv);
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private:
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  /// Print the error message to the error output stream.
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  void error(const Twine &Message, StringRef Whence = "");
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  /// Print the warning message to the error output stream.
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  void warning(const Twine &Message, StringRef Whence = "");
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  /// Convert \p Path into an absolute path and append it to the list
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  /// of collected paths.
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  void addCollectedPath(const std::string &Path);
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  /// If \p Path is a regular file, collect the path. If it's a
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  /// directory, recursively collect all of the paths within the directory.
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  void collectPaths(const std::string &Path);
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  /// Return a memory buffer for the given source file.
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  ErrorOr<const MemoryBuffer &> getSourceFile(StringRef SourceFile);
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  /// Create source views for the expansions of the view.
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  void attachExpansionSubViews(SourceCoverageView &View,
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                               ArrayRef<ExpansionRecord> Expansions,
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                               const CoverageMapping &Coverage);
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  /// Create the source view of a particular function.
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  std::unique_ptr<SourceCoverageView>
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  createFunctionView(const FunctionRecord &Function,
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                     const CoverageMapping &Coverage);
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  /// Create the main source view of a particular source file.
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  std::unique_ptr<SourceCoverageView>
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  createSourceFileView(StringRef SourceFile, const CoverageMapping &Coverage);
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  /// Load the coverage mapping data. Return nullptr if an error occurred.
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  std::unique_ptr<CoverageMapping> load();
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  /// Create a mapping from files in the Coverage data to local copies
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  /// (path-equivalence).
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  void remapPathNames(const CoverageMapping &Coverage);
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  /// Remove input source files which aren't mapped by \p Coverage.
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  void removeUnmappedInputs(const CoverageMapping &Coverage);
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  /// If a demangler is available, demangle all symbol names.
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  void demangleSymbols(const CoverageMapping &Coverage);
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  /// Write out a source file view to the filesystem.
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  void writeSourceFileView(StringRef SourceFile, CoverageMapping *Coverage,
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                           CoveragePrinter *Printer, bool ShowFilenames);
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  typedef llvm::function_ref<int(int, const char **)> CommandLineParserType;
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  int doShow(int argc, const char **argv,
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             CommandLineParserType commandLineParser);
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  int doReport(int argc, const char **argv,
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               CommandLineParserType commandLineParser);
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  int doExport(int argc, const char **argv,
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               CommandLineParserType commandLineParser);
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  std::vector<StringRef> ObjectFilenames;
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  CoverageViewOptions ViewOpts;
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  CoverageFiltersMatchAll Filters;
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  CoverageFilters IgnoreFilenameFilters;
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  /// The path to the indexed profile.
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  std::string PGOFilename;
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  /// A list of input source files.
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  std::vector<std::string> SourceFiles;
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  /// In -path-equivalence mode, this maps the absolute paths from the coverage
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  /// mapping data to the input source files.
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  StringMap<std::string> RemappedFilenames;
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  /// The coverage data path to be remapped from, and the source path to be
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  /// remapped to, when using -path-equivalence.
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  Optional<std::pair<std::string, std::string>> PathRemapping;
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  /// The architecture the coverage mapping data targets.
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  std::vector<StringRef> CoverageArches;
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  /// A cache for demangled symbols.
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  DemangleCache DC;
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  /// A lock which guards printing to stderr.
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  std::mutex ErrsLock;
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  /// A container for input source file buffers.
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  std::mutex LoadedSourceFilesLock;
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  std::vector<std::pair<std::string, std::unique_ptr<MemoryBuffer>>>
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      LoadedSourceFiles;
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  /// Whitelist from -name-whitelist to be used for filtering.
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  std::unique_ptr<SpecialCaseList> NameWhitelist;
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};
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}
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static std::string getErrorString(const Twine &Message, StringRef Whence,
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                                  bool Warning) {
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  std::string Str = (Warning ? 
"warning"15
:
"error"22
);
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  Str += ": ";
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  if (!Whence.empty())
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    Str += Whence.str() + ": ";
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  Str += Message.str() + "\n";
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  return Str;
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}
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void CodeCoverageTool::error(const Twine &Message, StringRef Whence) {
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  std::unique_lock<std::mutex> Guard{ErrsLock};
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  ViewOpts.colored_ostream(errs(), raw_ostream::RED)
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      << getErrorString(Message, Whence, false);
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}
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void CodeCoverageTool::warning(const Twine &Message, StringRef Whence) {
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  std::unique_lock<std::mutex> Guard{ErrsLock};
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  ViewOpts.colored_ostream(errs(), raw_ostream::RED)
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      << getErrorString(Message, Whence, true);
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}
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void CodeCoverageTool::addCollectedPath(const std::string &Path) {
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  SmallString<128> EffectivePath(Path);
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  if (std::error_code EC = sys::fs::make_absolute(EffectivePath)) {
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    error(EC.message(), Path);
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    return;
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0
  }
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  sys::path::remove_dots(EffectivePath, /*remove_dot_dots=*/true);
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  if (!IgnoreFilenameFilters.matchesFilename(EffectivePath))
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    SourceFiles.emplace_back(EffectivePath.str());
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}
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void CodeCoverageTool::collectPaths(const std::string &Path) {
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  llvm::sys::fs::file_status Status;
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  llvm::sys::fs::status(Path, Status);
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  if (!llvm::sys::fs::exists(Status)) {
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    if (PathRemapping)
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      addCollectedPath(Path);
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    else
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      warning("Source file doesn't exist, proceeded by ignoring it.", Path);
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    return;
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  }
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  if (llvm::sys::fs::is_regular_file(Status)) {
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    addCollectedPath(Path);
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    return;
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  }
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  if (llvm::sys::fs::is_directory(Status)) {
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    std::error_code EC;
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    for (llvm::sys::fs::recursive_directory_iterator F(Path, EC), E;
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         F != E; 
F.increment(EC)16
) {
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      auto Status = F->status();
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      if (!Status) {
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        warning(Status.getError().message(), F->path());
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        continue;
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      }
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      if (Status->type() == llvm::sys::fs::file_type::regular_file)
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        addCollectedPath(F->path());
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    }
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  }
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}
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ErrorOr<const MemoryBuffer &>
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CodeCoverageTool::getSourceFile(StringRef SourceFile) {
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  // If we've remapped filenames, look up the real location for this file.
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  std::unique_lock<std::mutex> Guard{LoadedSourceFilesLock};
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  if (!RemappedFilenames.empty()) {
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    auto Loc = RemappedFilenames.find(SourceFile);
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    if (Loc != RemappedFilenames.end())
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      SourceFile = Loc->second;
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  }
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  for (const auto &Files : LoadedSourceFiles)
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    if (sys::fs::equivalent(SourceFile, Files.first))
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      return *Files.second;
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  auto Buffer = MemoryBuffer::getFile(SourceFile);
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  if (auto EC = Buffer.getError()) {
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    error(EC.message(), SourceFile);
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    return EC;
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  }
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  LoadedSourceFiles.emplace_back(SourceFile, std::move(Buffer.get()));
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  return *LoadedSourceFiles.back().second;
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}
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void CodeCoverageTool::attachExpansionSubViews(
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    SourceCoverageView &View, ArrayRef<ExpansionRecord> Expansions,
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    const CoverageMapping &Coverage) {
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  if (!ViewOpts.ShowExpandedRegions)
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    return;
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  for (const auto &Expansion : Expansions) {
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    auto ExpansionCoverage = Coverage.getCoverageForExpansion(Expansion);
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    if (ExpansionCoverage.empty())
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      continue;
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    auto SourceBuffer = getSourceFile(ExpansionCoverage.getFilename());
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    if (!SourceBuffer)
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      continue;
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    auto SubViewExpansions = ExpansionCoverage.getExpansions();
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    auto SubView =
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        SourceCoverageView::create(Expansion.Function.Name, SourceBuffer.get(),
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                                   ViewOpts, std::move(ExpansionCoverage));
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    attachExpansionSubViews(*SubView, SubViewExpansions, Coverage);
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    View.addExpansion(Expansion.Region, std::move(SubView));
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  }
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}
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std::unique_ptr<SourceCoverageView>
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CodeCoverageTool::createFunctionView(const FunctionRecord &Function,
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                                     const CoverageMapping &Coverage) {
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  auto FunctionCoverage = Coverage.getCoverageForFunction(Function);
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  if (FunctionCoverage.empty())
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    return nullptr;
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  auto SourceBuffer = getSourceFile(FunctionCoverage.getFilename());
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  if (!SourceBuffer)
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    return nullptr;
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  auto Expansions = FunctionCoverage.getExpansions();
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  auto View = SourceCoverageView::create(DC.demangle(Function.Name),
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                                         SourceBuffer.get(), ViewOpts,
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                                         std::move(FunctionCoverage));
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  attachExpansionSubViews(*View, Expansions, Coverage);
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  return View;
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}
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std::unique_ptr<SourceCoverageView>
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CodeCoverageTool::createSourceFileView(StringRef SourceFile,
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                                       const CoverageMapping &Coverage) {
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  auto SourceBuffer = getSourceFile(SourceFile);
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  if (!SourceBuffer)
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    return nullptr;
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  auto FileCoverage = Coverage.getCoverageForFile(SourceFile);
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  if (FileCoverage.empty())
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    return nullptr;
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  auto Expansions = FileCoverage.getExpansions();
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  auto View = SourceCoverageView::create(SourceFile, SourceBuffer.get(),
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                                         ViewOpts, std::move(FileCoverage));
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  attachExpansionSubViews(*View, Expansions, Coverage);
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  if (!ViewOpts.ShowFunctionInstantiations)
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    return View;
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for (const auto &Group : Coverage.getInstantiationGroups(SourceFile))101
{
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    // Skip functions which have a single instantiation.
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    if (Group.size() < 2)
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      continue;
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for (const FunctionRecord *Function : Group.getInstantiations())26
{
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      std::unique_ptr<SourceCoverageView> SubView{nullptr};
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      StringRef Funcname = DC.demangle(Function->Name);
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      if (Function->ExecutionCount > 0) {
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        auto SubViewCoverage = Coverage.getCoverageForFunction(*Function);
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        auto SubViewExpansions = SubViewCoverage.getExpansions();
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        SubView = SourceCoverageView::create(
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            Funcname, SourceBuffer.get(), ViewOpts, std::move(SubViewCoverage));
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        attachExpansionSubViews(*SubView, SubViewExpansions, Coverage);
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      }
326
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      unsigned FileID = Function->CountedRegions.front().FileID;
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      unsigned Line = 0;
329
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      for (const auto &CR : Function->CountedRegions)
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        if (CR.FileID == FileID)
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          Line = std::max(CR.LineEnd, Line);
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      View->addInstantiation(Funcname, Line, std::move(SubView));
333
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    }
334
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  }
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  return View;
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101
}
337
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static bool modifiedTimeGT(StringRef LHS, StringRef RHS) {
339
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  sys::fs::file_status Status;
340
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  if (sys::fs::status(LHS, Status))
341
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    return false;
342
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  auto LHSTime = Status.getLastModificationTime();
343
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  if (sys::fs::status(RHS, Status))
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    return false;
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  auto RHSTime = Status.getLastModificationTime();
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  return LHSTime > RHSTime;
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}
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std::unique_ptr<CoverageMapping> CodeCoverageTool::load() {
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  for (StringRef ObjectFilename : ObjectFilenames)
351
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    if (modifiedTimeGT(ObjectFilename, PGOFilename))
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      warning("profile data may be out of date - object is newer",
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              ObjectFilename);
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  auto CoverageOrErr =
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      CoverageMapping::load(ObjectFilenames, PGOFilename, CoverageArches);
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  if (Error E = CoverageOrErr.takeError()) {
357
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    error("Failed to load coverage: " + toString(std::move(E)),
358
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          join(ObjectFilenames.begin(), ObjectFilenames.end(), ", "));
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    return nullptr;
360
2
  }
361
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  auto Coverage = std::move(CoverageOrErr.get());
362
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  unsigned Mismatched = Coverage->getMismatchedCount();
363
108
  if (Mismatched) {
364
1
    warning(Twine(Mismatched) + " functions have mismatched data");
365
1
366
1
    if (ViewOpts.Debug) {
367
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      for (const auto &HashMismatch : Coverage->getHashMismatches())
368
1
        errs() << "hash-mismatch: "
369
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               << "No profile record found for '" << HashMismatch.first << "'"
370
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               << " with hash = 0x" << Twine::utohexstr(HashMismatch.second)
371
1
               << '\n';
372
1
    }
373
1
  }
374
108
375
108
  remapPathNames(*Coverage);
376
108
377
108
  if (!SourceFiles.empty())
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    removeUnmappedInputs(*Coverage);
379
108
380
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  demangleSymbols(*Coverage);
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382
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  return Coverage;
383
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}
384
385
108
void CodeCoverageTool::remapPathNames(const CoverageMapping &Coverage) {
386
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  if (!PathRemapping)
387
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    return;
388
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389
88
  // Convert remapping paths to native paths with trailing seperators.
390
176
  
auto nativeWithTrailing = [](StringRef Path) -> std::string 88
{
391
176
    if (Path.empty())
392
0
      return "";
393
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    SmallString<128> NativePath;
394
176
    sys::path::native(Path, NativePath);
395
176
    if (!sys::path::is_separator(NativePath.back()))
396
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      NativePath += sys::path::get_separator();
397
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    return NativePath.c_str();
398
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  };
399
88
  std::string RemapFrom = nativeWithTrailing(PathRemapping->first);
400
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  std::string RemapTo = nativeWithTrailing(PathRemapping->second);
401
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402
88
  // Create a mapping from coverage data file paths to local paths.
403
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  for (StringRef Filename : Coverage.getUniqueSourceFiles()) {
404
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    SmallString<128> NativeFilename;
405
201
    sys::path::native(Filename, NativeFilename);
406
201
    if (NativeFilename.startswith(RemapFrom)) {
407
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      RemappedFilenames[Filename] =
408
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          RemapTo + NativeFilename.substr(RemapFrom.size()).str();
409
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    }
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  }
411
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412
88
  // Convert input files from local paths to coverage data file paths.
413
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  StringMap<std::string> InvRemappedFilenames;
414
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  for (const auto &RemappedFilename : RemappedFilenames)
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    InvRemappedFilenames[RemappedFilename.getValue()] = RemappedFilename.getKey();
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417
88
  for (std::string &Filename : SourceFiles) {
418
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    SmallString<128> NativeFilename;
419
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    sys::path::native(Filename, NativeFilename);
420
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    auto CovFileName = InvRemappedFilenames.find(NativeFilename);
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    if (CovFileName != InvRemappedFilenames.end())
422
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      Filename = CovFileName->second;
423
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  }
424
88
}
425
426
63
void CodeCoverageTool::removeUnmappedInputs(const CoverageMapping &Coverage) {
427
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  std::vector<StringRef> CoveredFiles = Coverage.getUniqueSourceFiles();
428
63
429
63
  auto UncoveredFilesIt = SourceFiles.end();
430
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  // The user may have specified source files which aren't in the coverage
431
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  // mapping. Filter these files away.
432
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  UncoveredFilesIt = std::remove_if(
433
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      SourceFiles.begin(), SourceFiles.end(), [&](const std::string &SF) {
434
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        return !std::binary_search(CoveredFiles.begin(), CoveredFiles.end(),
435
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                                   SF);
436
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      });
437
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438
63
  SourceFiles.erase(UncoveredFilesIt, SourceFiles.end());
439
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}
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void CodeCoverageTool::demangleSymbols(const CoverageMapping &Coverage) {
442
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  if (!ViewOpts.hasDemangler())
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    return;
444
3
445
3
  // Pass function names to the demangler in a temporary file.
446
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  int InputFD;
447
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  SmallString<256> InputPath;
448
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  std::error_code EC =
449
3
      sys::fs::createTemporaryFile("demangle-in", "list", InputFD, InputPath);
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  if (EC) {
451
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    error(InputPath, EC.message());
452
0
    return;
453
0
  }
454
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  ToolOutputFile InputTOF{InputPath, InputFD};
455
3
456
3
  unsigned NumSymbols = 0;
457
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  for (const auto &Function : Coverage.getCoveredFunctions()) {
458
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    InputTOF.os() << Function.Name << '\n';
459
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    ++NumSymbols;
460
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  }
461
3
  InputTOF.os().close();
462
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463
3
  // Use another temporary file to store the demangler's output.
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  int OutputFD;
465
3
  SmallString<256> OutputPath;
466
3
  EC = sys::fs::createTemporaryFile("demangle-out", "list", OutputFD,
467
3
                                    OutputPath);
468
3
  if (EC) {
469
0
    error(OutputPath, EC.message());
470
0
    return;
471
0
  }
472
3
  ToolOutputFile OutputTOF{OutputPath, OutputFD};
473
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  OutputTOF.os().close();
474
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475
3
  // Invoke the demangler.
476
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  std::vector<StringRef> ArgsV;
477
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  for (StringRef Arg : ViewOpts.DemanglerOpts)
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    ArgsV.push_back(Arg);
479
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  Optional<StringRef> Redirects[] = {InputPath.str(), OutputPath.str(), {""}};
480
3
  std::string ErrMsg;
481
3
  int RC = sys::ExecuteAndWait(ViewOpts.DemanglerOpts[0], ArgsV,
482
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                               /*env=*/None, Redirects, /*secondsToWait=*/0,
483
3
                               /*memoryLimit=*/0, &ErrMsg);
484
3
  if (RC) {
485
0
    error(ErrMsg, ViewOpts.DemanglerOpts[0]);
486
0
    return;
487
0
  }
488
3
489
3
  // Parse the demangler's output.
490
3
  auto BufOrError = MemoryBuffer::getFile(OutputPath);
491
3
  if (!BufOrError) {
492
0
    error(OutputPath, BufOrError.getError().message());
493
0
    return;
494
0
  }
495
3
496
3
  std::unique_ptr<MemoryBuffer> DemanglerBuf = std::move(*BufOrError);
497
3
498
3
  SmallVector<StringRef, 8> Symbols;
499
3
  StringRef DemanglerData = DemanglerBuf->getBuffer();
500
3
  DemanglerData.split(Symbols, '\n', /*MaxSplit=*/NumSymbols,
501
3
                      /*KeepEmpty=*/false);
502
3
  if (Symbols.size() != NumSymbols) {
503
0
    error("Demangler did not provide expected number of symbols");
504
0
    return;
505
0
  }
506
3
507
3
  // Cache the demangled names.
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3
  unsigned I = 0;
509
3
  for (const auto &Function : Coverage.getCoveredFunctions())
510
9
    // On Windows, lines in the demangler's output file end with "\r\n".
511
9
    // Splitting by '\n' keeps '\r's, so cut them now.
512
9
    DC.DemangledNames[Function.Name] = Symbols[I++].rtrim();
513
3
}
514
515
void CodeCoverageTool::writeSourceFileView(StringRef SourceFile,
516
                                           CoverageMapping *Coverage,
517
                                           CoveragePrinter *Printer,
518
113
                                           bool ShowFilenames) {
519
113
  auto View = createSourceFileView(SourceFile, *Coverage);
520
113
  if (!View) {
521
11
    warning("The file '" + SourceFile + "' isn't covered.");
522
11
    return;
523
11
  }
524
102
525
102
  auto OSOrErr = Printer->createViewFile(SourceFile, /*InToplevel=*/false);
526
102
  if (Error E = OSOrErr.takeError()) {
527
0
    error("Could not create view file!", toString(std::move(E)));
528
0
    return;
529
0
  }
530
102
  auto OS = std::move(OSOrErr.get());
531
102
532
102
  View->print(*OS.get(), /*Wholefile=*/true,
533
102
              /*ShowSourceName=*/ShowFilenames,
534
102
              /*ShowTitle=*/ViewOpts.hasOutputDirectory());
535
102
  Printer->closeViewFile(std::move(OS));
536
102
}
537
538
118
int CodeCoverageTool::run(Command Cmd, int argc, const char **argv) {
539
118
  cl::opt<std::string> CovFilename(
540
118
      cl::Positional, cl::desc("Covered executable or object file."));
541
118
542
118
  cl::list<std::string> CovFilenames(
543
118
      "object", cl::desc("Coverage executable or object file"), cl::ZeroOrMore,
544
118
      cl::CommaSeparated);
545
118
546
118
  cl::list<std::string> InputSourceFiles(
547
118
      cl::Positional, cl::desc("<Source files>"), cl::ZeroOrMore);
548
118
549
118
  cl::opt<bool> DebugDumpCollectedPaths(
550
118
      "dump-collected-paths", cl::Optional, cl::Hidden,
551
118
      cl::desc("Show the collected paths to source files"));
552
118
553
118
  cl::opt<std::string, true> PGOFilename(
554
118
      "instr-profile", cl::Required, cl::location(this->PGOFilename),
555
118
      cl::desc(
556
118
          "File with the profile data obtained after an instrumented run"));
557
118
558
118
  cl::list<std::string> Arches(
559
118
      "arch", cl::desc("architectures of the coverage mapping binaries"));
560
118
561
118
  cl::opt<bool> DebugDump("dump", cl::Optional,
562
118
                          cl::desc("Show internal debug dump"));
563
118
564
118
  cl::opt<CoverageViewOptions::OutputFormat> Format(
565
118
      "format", cl::desc("Output format for line-based coverage reports"),
566
118
      cl::values(clEnumValN(CoverageViewOptions::OutputFormat::Text, "text",
567
118
                            "Text output"),
568
118
                 clEnumValN(CoverageViewOptions::OutputFormat::HTML, "html",
569
118
                            "HTML output"),
570
118
                 clEnumValN(CoverageViewOptions::OutputFormat::Lcov, "lcov",
571
118
                            "lcov tracefile output")),
572
118
      cl::init(CoverageViewOptions::OutputFormat::Text));
573
118
574
118
  cl::opt<std::string> PathRemap(
575
118
      "path-equivalence", cl::Optional,
576
118
      cl::desc("<from>,<to> Map coverage data paths to local source file "
577
118
               "paths"));
578
118
579
118
  cl::OptionCategory FilteringCategory("Function filtering options");
580
118
581
118
  cl::list<std::string> NameFilters(
582
118
      "name", cl::Optional,
583
118
      cl::desc("Show code coverage only for functions with the given name"),
584
118
      cl::ZeroOrMore, cl::cat(FilteringCategory));
585
118
586
118
  cl::list<std::string> NameFilterFiles(
587
118
      "name-whitelist", cl::Optional,
588
118
      cl::desc("Show code coverage only for functions listed in the given "
589
118
               "file"),
590
118
      cl::ZeroOrMore, cl::cat(FilteringCategory));
591
118
592
118
  cl::list<std::string> NameRegexFilters(
593
118
      "name-regex", cl::Optional,
594
118
      cl::desc("Show code coverage only for functions that match the given "
595
118
               "regular expression"),
596
118
      cl::ZeroOrMore, cl::cat(FilteringCategory));
597
118
598
118
  cl::list<std::string> IgnoreFilenameRegexFilters(
599
118
      "ignore-filename-regex", cl::Optional,
600
118
      cl::desc("Skip source code files with file paths that match the given "
601
118
               "regular expression"),
602
118
      cl::ZeroOrMore, cl::cat(FilteringCategory));
603
118
604
118
  cl::opt<double> RegionCoverageLtFilter(
605
118
      "region-coverage-lt", cl::Optional,
606
118
      cl::desc("Show code coverage only for functions with region coverage "
607
118
               "less than the given threshold"),
608
118
      cl::cat(FilteringCategory));
609
118
610
118
  cl::opt<double> RegionCoverageGtFilter(
611
118
      "region-coverage-gt", cl::Optional,
612
118
      cl::desc("Show code coverage only for functions with region coverage "
613
118
               "greater than the given threshold"),
614
118
      cl::cat(FilteringCategory));
615
118
616
118
  cl::opt<double> LineCoverageLtFilter(
617
118
      "line-coverage-lt", cl::Optional,
618
118
      cl::desc("Show code coverage only for functions with line coverage less "
619
118
               "than the given threshold"),
620
118
      cl::cat(FilteringCategory));
621
118
622
118
  cl::opt<double> LineCoverageGtFilter(
623
118
      "line-coverage-gt", cl::Optional,
624
118
      cl::desc("Show code coverage only for functions with line coverage "
625
118
               "greater than the given threshold"),
626
118
      cl::cat(FilteringCategory));
627
118
628
118
  cl::opt<cl::boolOrDefault> UseColor(
629
118
      "use-color", cl::desc("Emit colored output (default=autodetect)"),
630
118
      cl::init(cl::BOU_UNSET));
631
118
632
118
  cl::list<std::string> DemanglerOpts(
633
118
      "Xdemangler", cl::desc("<demangler-path>|<demangler-option>"));
634
118
635
118
  cl::opt<bool> RegionSummary(
636
118
      "show-region-summary", cl::Optional,
637
118
      cl::desc("Show region statistics in summary table"),
638
118
      cl::init(true));
639
118
640
118
  cl::opt<bool> InstantiationSummary(
641
118
      "show-instantiation-summary", cl::Optional,
642
118
      cl::desc("Show instantiation statistics in summary table"));
643
118
644
118
  cl::opt<bool> SummaryOnly(
645
118
      "summary-only", cl::Optional,
646
118
      cl::desc("Export only summary information for each source file"));
647
118
648
118
  cl::opt<unsigned> NumThreads(
649
118
      "num-threads", cl::init(0),
650
118
      cl::desc("Number of merge threads to use (default: autodetect)"));
651
118
  cl::alias NumThreadsA("j", cl::desc("Alias for --num-threads"),
652
118
                        cl::aliasopt(NumThreads));
653
118
654
118
  auto commandLineParser = [&, this](int argc, const char **argv) -> int {
655
118
    cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n");
656
118
    ViewOpts.Debug = DebugDump;
657
118
658
118
    if (!CovFilename.empty())
659
116
      ObjectFilenames.emplace_back(CovFilename);
660
118
    for (const std::string &Filename : CovFilenames)
661
4
      ObjectFilenames.emplace_back(Filename);
662
118
    if (ObjectFilenames.empty()) {
663
1
      errs() << "No filenames specified!\n";
664
1
      ::exit(1);
665
1
    }
666
117
667
117
    ViewOpts.Format = Format;
668
117
    switch (ViewOpts.Format) {
669
117
    case CoverageViewOptions::OutputFormat::Text:
670
89
      ViewOpts.Colors = UseColor == cl::BOU_UNSET
671
89
                            ? sys::Process::StandardOutHasColors()
672
89
                            : 
UseColor == cl::BOU_TRUE0
;
673
89
      break;
674
117
    case CoverageViewOptions::OutputFormat::HTML:
675
26
      if (UseColor == cl::BOU_FALSE)
676
0
        errs() << "Color output cannot be disabled when generating html.\n";
677
26
      ViewOpts.Colors = true;
678
26
      break;
679
117
    case CoverageViewOptions::OutputFormat::Lcov:
680
2
      if (UseColor == cl::BOU_TRUE)
681
0
        errs() << "Color output cannot be enabled when generating lcov.\n";
682
2
      ViewOpts.Colors = false;
683
2
      break;
684
117
    }
685
117
686
117
    // If path-equivalence was given and is a comma seperated pair then set
687
117
    // PathRemapping.
688
117
    auto EquivPair = StringRef(PathRemap).split(',');
689
117
    if (!(EquivPair.first.empty() && 
EquivPair.second.empty()25
))
690
92
      PathRemapping = EquivPair;
691
117
692
117
    // If a demangler is supplied, check if it exists and register it.
693
117
    if (!DemanglerOpts.empty()) {
694
3
      auto DemanglerPathOrErr = sys::findProgramByName(DemanglerOpts[0]);
695
3
      if (!DemanglerPathOrErr) {
696
0
        error("Could not find the demangler!",
697
0
              DemanglerPathOrErr.getError().message());
698
0
        return 1;
699
0
      }
700
3
      DemanglerOpts[0] = *DemanglerPathOrErr;
701
3
      ViewOpts.DemanglerOpts.swap(DemanglerOpts);
702
3
    }
703
117
704
117
    // Read in -name-whitelist files.
705
117
    if (!NameFilterFiles.empty()) {
706
2
      std::string SpecialCaseListErr;
707
2
      NameWhitelist =
708
2
          SpecialCaseList::create(NameFilterFiles, SpecialCaseListErr);
709
2
      if (!NameWhitelist)
710
0
        error(SpecialCaseListErr);
711
2
    }
712
117
713
117
    // Create the function filters
714
117
    if (!NameFilters.empty() || 
NameWhitelist101
||
!NameRegexFilters.empty()99
) {
715
20
      auto NameFilterer = llvm::make_unique<CoverageFilters>();
716
20
      for (const auto &Name : NameFilters)
717
20
        NameFilterer->push_back(llvm::make_unique<NameCoverageFilter>(Name));
718
20
      if (NameWhitelist)
719
2
        NameFilterer->push_back(
720
2
            llvm::make_unique<NameWhitelistCoverageFilter>(*NameWhitelist));
721
20
      for (const auto &Regex : NameRegexFilters)
722
2
        NameFilterer->push_back(
723
2
            llvm::make_unique<NameRegexCoverageFilter>(Regex));
724
20
      Filters.push_back(std::move(NameFilterer));
725
20
    }
726
117
727
117
    if (RegionCoverageLtFilter.getNumOccurrences() ||
728
117
        RegionCoverageGtFilter.getNumOccurrences() ||
729
117
        LineCoverageLtFilter.getNumOccurrences() ||
730
117
        LineCoverageGtFilter.getNumOccurrences()) {
731
0
      auto StatFilterer = llvm::make_unique<CoverageFilters>();
732
0
      if (RegionCoverageLtFilter.getNumOccurrences())
733
0
        StatFilterer->push_back(llvm::make_unique<RegionCoverageFilter>(
734
0
            RegionCoverageFilter::LessThan, RegionCoverageLtFilter));
735
0
      if (RegionCoverageGtFilter.getNumOccurrences())
736
0
        StatFilterer->push_back(llvm::make_unique<RegionCoverageFilter>(
737
0
            RegionCoverageFilter::GreaterThan, RegionCoverageGtFilter));
738
0
      if (LineCoverageLtFilter.getNumOccurrences())
739
0
        StatFilterer->push_back(llvm::make_unique<LineCoverageFilter>(
740
0
            LineCoverageFilter::LessThan, LineCoverageLtFilter));
741
0
      if (LineCoverageGtFilter.getNumOccurrences())
742
0
        StatFilterer->push_back(llvm::make_unique<LineCoverageFilter>(
743
0
            RegionCoverageFilter::GreaterThan, LineCoverageGtFilter));
744
0
      Filters.push_back(std::move(StatFilterer));
745
0
    }
746
117
747
117
    // Create the ignore filename filters.
748
117
    for (const auto &RE : IgnoreFilenameRegexFilters)
749
5
      IgnoreFilenameFilters.push_back(
750
5
          llvm::make_unique<NameRegexCoverageFilter>(RE));
751
117
752
117
    if (!Arches.empty()) {
753
7
      for (const std::string &Arch : Arches) {
754
7
        if (Triple(Arch).getArch() == llvm::Triple::ArchType::UnknownArch) {
755
1
          error("Unknown architecture: " + Arch);
756
1
          return 1;
757
1
        }
758
6
        CoverageArches.emplace_back(Arch);
759
6
      }
760
5
      
if (4
CoverageArches.size() != ObjectFilenames.size()4
) {
761
1
        error("Number of architectures doesn't match the number of objects");
762
1
        return 1;
763
1
      }
764
115
    }
765
115
766
115
    // IgnoreFilenameFilters are applied even when InputSourceFiles specified.
767
115
    for (const std::string &File : InputSourceFiles)
768
83
      collectPaths(File);
769
115
770
115
    if (DebugDumpCollectedPaths) {
771
3
      for (const std::string &SF : SourceFiles)
772
12
        outs() << SF << '\n';
773
3
      ::exit(0);
774
3
    }
775
112
776
112
    ViewOpts.ShowRegionSummary = RegionSummary;
777
112
    ViewOpts.ShowInstantiationSummary = InstantiationSummary;
778
112
    ViewOpts.ExportSummaryOnly = SummaryOnly;
779
112
    ViewOpts.NumThreads = NumThreads;
780
112
781
112
    return 0;
782
112
  };
783
118
784
118
  switch (Cmd) {
785
118
  case Show:
786
82
    return doShow(argc, argv, commandLineParser);
787
118
  case Report:
788
23
    return doReport(argc, argv, commandLineParser);
789
118
  case Export:
790
13
    return doExport(argc, argv, commandLineParser);
791
0
  }
792
0
  return 0;
793
0
}
794
795
int CodeCoverageTool::doShow(int argc, const char **argv,
796
82
                             CommandLineParserType commandLineParser) {
797
82
798
82
  cl::OptionCategory ViewCategory("Viewing options");
799
82
800
82
  cl::opt<bool> ShowLineExecutionCounts(
801
82
      "show-line-counts", cl::Optional,
802
82
      cl::desc("Show the execution counts for each line"), cl::init(true),
803
82
      cl::cat(ViewCategory));
804
82
805
82
  cl::opt<bool> ShowRegions(
806
82
      "show-regions", cl::Optional,
807
82
      cl::desc("Show the execution counts for each region"),
808
82
      cl::cat(ViewCategory));
809
82
810
82
  cl::opt<bool> ShowBestLineRegionsCounts(
811
82
      "show-line-counts-or-regions", cl::Optional,
812
82
      cl::desc("Show the execution counts for each line, or the execution "
813
82
               "counts for each region on lines that have multiple regions"),
814
82
      cl::cat(ViewCategory));
815
82
816
82
  cl::opt<bool> ShowExpansions("show-expansions", cl::Optional,
817
82
                               cl::desc("Show expanded source regions"),
818
82
                               cl::cat(ViewCategory));
819
82
820
82
  cl::opt<bool> ShowInstantiations("show-instantiations", cl::Optional,
821
82
                                   cl::desc("Show function instantiations"),
822
82
                                   cl::init(true), cl::cat(ViewCategory));
823
82
824
82
  cl::opt<std::string> ShowOutputDirectory(
825
82
      "output-dir", cl::init(""),
826
82
      cl::desc("Directory in which coverage information is written out"));
827
82
  cl::alias ShowOutputDirectoryA("o", cl::desc("Alias for --output-dir"),
828
82
                                 cl::aliasopt(ShowOutputDirectory));
829
82
830
82
  cl::opt<uint32_t> TabSize(
831
82
      "tab-size", cl::init(2),
832
82
      cl::desc(
833
82
          "Set tab expansion size for html coverage reports (default = 2)"));
834
82
835
82
  cl::opt<std::string> ProjectTitle(
836
82
      "project-title", cl::Optional,
837
82
      cl::desc("Set project title for the coverage report"));
838
82
839
82
  auto Err = commandLineParser(argc, argv);
840
82
  if (Err)
841
2
    return Err;
842
80
843
80
  if (ViewOpts.Format == CoverageViewOptions::OutputFormat::Lcov) {
844
0
    error("Lcov format should be used with 'llvm-cov export'.");
845
0
    return 1;
846
0
  }
847
80
848
80
  ViewOpts.ShowLineNumbers = true;
849
80
  ViewOpts.ShowLineStats = ShowLineExecutionCounts.getNumOccurrences() != 0 ||
850
80
                           
!ShowRegions77
||
ShowBestLineRegionsCounts2
;
851
80
  ViewOpts.ShowRegionMarkers = ShowRegions || 
ShowBestLineRegionsCounts75
;
852
80
  ViewOpts.ShowExpandedRegions = ShowExpansions;
853
80
  ViewOpts.ShowFunctionInstantiations = ShowInstantiations;
854
80
  ViewOpts.ShowOutputDirectory = ShowOutputDirectory;
855
80
  ViewOpts.TabSize = TabSize;
856
80
  ViewOpts.ProjectTitle = ProjectTitle;
857
80
858
80
  if (ViewOpts.hasOutputDirectory()) {
859
31
    if (auto E = sys::fs::create_directories(ViewOpts.ShowOutputDirectory)) {
860
0
      error("Could not create output directory!", E.message());
861
0
      return 1;
862
0
    }
863
80
  }
864
80
865
80
  sys::fs::file_status Status;
866
80
  if (sys::fs::status(PGOFilename, Status)) {
867
0
    error("profdata file error: can not get the file status. \n");
868
0
    return 1;
869
0
  }
870
80
871
80
  auto ModifiedTime = Status.getLastModificationTime();
872
80
  std::string ModifiedTimeStr = to_string(ModifiedTime);
873
80
  size_t found = ModifiedTimeStr.rfind(':');
874
80
  ViewOpts.CreatedTimeStr = (found != std::string::npos)
875
80
                                ? 
"Created: " + ModifiedTimeStr.substr(0, found)77
876
80
                                : 
"Created: " + ModifiedTimeStr3
;
877
80
878
80
  auto Coverage = load();
879
80
  if (!Coverage)
880
1
    return 1;
881
79
882
79
  auto Printer = CoveragePrinter::create(ViewOpts);
883
79
884
79
  if (SourceFiles.empty())
885
26
    // Get the source files from the function coverage mapping.
886
89
    
for (StringRef Filename : Coverage->getUniqueSourceFiles())26
{
887
89
      if (!IgnoreFilenameFilters.matchesFilename(Filename))
888
88
        SourceFiles.push_back(Filename);
889
89
    }
890
79
891
79
  // Create an index out of the source files.
892
79
  if (ViewOpts.hasOutputDirectory()) {
893
31
    if (Error E = Printer->createIndexFile(SourceFiles, *Coverage, Filters)) {
894
1
      error("Could not create index file!", toString(std::move(E)));
895
1
      return 1;
896
1
    }
897
78
  }
898
78
899
78
  if (!Filters.empty()) {
900
20
    // Build the map of filenames to functions.
901
20
    std::map<llvm::StringRef, std::vector<const FunctionRecord *>>
902
20
        FilenameFunctionMap;
903
20
    for (const auto &SourceFile : SourceFiles)
904
26
      for (const auto &Function : Coverage->getCoveredFunctions(SourceFile))
905
57
        if (Filters.matches(*Coverage.get(), Function))
906
30
          FilenameFunctionMap[SourceFile].push_back(&Function);
907
20
908
20
    // Only print filter matching functions for each file.
909
21
    for (const auto &FileFunc : FilenameFunctionMap) {
910
21
      StringRef File = FileFunc.first;
911
21
      const auto &Functions = FileFunc.second;
912
21
913
21
      auto OSOrErr = Printer->createViewFile(File, /*InToplevel=*/false);
914
21
      if (Error E = OSOrErr.takeError()) {
915
0
        error("Could not create view file!", toString(std::move(E)));
916
0
        return 1;
917
0
      }
918
21
      auto OS = std::move(OSOrErr.get());
919
21
920
21
      bool ShowTitle = ViewOpts.hasOutputDirectory();
921
30
      for (const auto *Function : Functions) {
922
30
        auto FunctionView = createFunctionView(*Function, *Coverage);
923
30
        if (!FunctionView) {
924
3
          warning("Could not read coverage for '" + Function->Name + "'.");
925
3
          continue;
926
3
        }
927
27
        FunctionView->print(*OS.get(), /*WholeFile=*/false,
928
27
                            /*ShowSourceName=*/true, ShowTitle);
929
27
        ShowTitle = false;
930
27
      }
931
21
932
21
      Printer->closeViewFile(std::move(OS));
933
21
    }
934
20
    return 0;
935
58
  }
936
58
937
58
  // Show files
938
58
  bool ShowFilenames =
939
58
      (SourceFiles.size() != 1) || 
ViewOpts.hasOutputDirectory()39
||
940
58
      
(ViewOpts.Format == CoverageViewOptions::OutputFormat::HTML)26
;
941
58
942
58
  auto NumThreads = ViewOpts.NumThreads;
943
58
944
58
  // If NumThreads is not specified, auto-detect a good default.
945
58
  if (NumThreads == 0)
946
44
    NumThreads =
947
44
        std::max(1U, std::min(llvm::heavyweight_hardware_concurrency(),
948
44
                              unsigned(SourceFiles.size())));
949
58
950
58
  if (!ViewOpts.hasOutputDirectory() || 
NumThreads == 118
) {
951
52
    for (const std::string &SourceFile : SourceFiles)
952
98
      writeSourceFileView(SourceFile, Coverage.get(), Printer.get(),
953
98
                          ShowFilenames);
954
52
  } else {
955
6
    // In -output-dir mode, it's safe to use multiple threads to print files.
956
6
    ThreadPool Pool(NumThreads);
957
6
    for (const std::string &SourceFile : SourceFiles)
958
15
      Pool.async(&CodeCoverageTool::writeSourceFileView, this, SourceFile,
959
15
                 Coverage.get(), Printer.get(), ShowFilenames);
960
6
    Pool.wait();
961
6
  }
962
58
963
58
  return 0;
964
58
}
965
966
int CodeCoverageTool::doReport(int argc, const char **argv,
967
23
                               CommandLineParserType commandLineParser) {
968
23
  cl::opt<bool> ShowFunctionSummaries(
969
23
      "show-functions", cl::Optional, cl::init(false),
970
23
      cl::desc("Show coverage summaries for each function"));
971
23
972
23
  auto Err = commandLineParser(argc, argv);
973
23
  if (Err)
974
0
    return Err;
975
23
976
23
  if (ViewOpts.Format == CoverageViewOptions::OutputFormat::HTML) {
977
1
    error("HTML output for summary reports is not yet supported.");
978
1
    return 1;
979
22
  } else if (ViewOpts.Format == CoverageViewOptions::OutputFormat::Lcov) {
980
0
    error("Lcov format should be used with 'llvm-cov export'.");
981
0
    return 1;
982
0
  }
983
22
984
22
  auto Coverage = load();
985
22
  if (!Coverage)
986
1
    return 1;
987
21
988
21
  CoverageReport Report(ViewOpts, *Coverage.get());
989
21
  if (!ShowFunctionSummaries) {
990
16
    if (SourceFiles.empty())
991
13
      Report.renderFileReports(llvm::outs(), IgnoreFilenameFilters);
992
3
    else
993
3
      Report.renderFileReports(llvm::outs(), SourceFiles);
994
16
  } else {
995
5
    if (SourceFiles.empty()) {
996
1
      error("Source files must be specified when -show-functions=true is "
997
1
            "specified");
998
1
      return 1;
999
1
    }
1000
4
1001
4
    Report.renderFunctionReports(SourceFiles, DC, llvm::outs());
1002
4
  }
1003
21
  
return 020
;
1004
21
}
1005
1006
int CodeCoverageTool::doExport(int argc, const char **argv,
1007
13
                               CommandLineParserType commandLineParser) {
1008
13
1009
13
  cl::OptionCategory ExportCategory("Exporting options");
1010
13
1011
13
  cl::opt<bool> SkipExpansions("skip-expansions", cl::Optional,
1012
13
                               cl::desc("Don't export expanded source regions"),
1013
13
                               cl::cat(ExportCategory));
1014
13
1015
13
  cl::opt<bool> SkipFunctions("skip-functions", cl::Optional,
1016
13
                              cl::desc("Don't export per-function data"),
1017
13
                              cl::cat(ExportCategory));
1018
13
1019
13
  auto Err = commandLineParser(argc, argv);
1020
13
  if (Err)
1021
0
    return Err;
1022
13
1023
13
  ViewOpts.SkipExpansions = SkipExpansions;
1024
13
  ViewOpts.SkipFunctions = SkipFunctions;
1025
13
1026
13
  if (ViewOpts.Format != CoverageViewOptions::OutputFormat::Text &&
1027
13
      
ViewOpts.Format != CoverageViewOptions::OutputFormat::Lcov3
) {
1028
1
    error("Coverage data can only be exported as textual JSON or an "
1029
1
          "lcov tracefile.");
1030
1
    return 1;
1031
1
  }
1032
12
1033
12
  auto Coverage = load();
1034
12
  if (!Coverage) {
1035
0
    error("Could not load coverage information");
1036
0
    return 1;
1037
0
  }
1038
12
1039
12
  std::unique_ptr<CoverageExporter> Exporter;
1040
12
1041
12
  switch (ViewOpts.Format) {
1042
12
  case CoverageViewOptions::OutputFormat::Text:
1043
10
    Exporter = llvm::make_unique<CoverageExporterJson>(*Coverage.get(),
1044
10
                                                       ViewOpts, outs());
1045
10
    break;
1046
12
  case CoverageViewOptions::OutputFormat::HTML:
1047
0
    // Unreachable because we should have gracefully terminated with an error
1048
0
    // above.
1049
0
    llvm_unreachable("Export in HTML is not supported!");
1050
12
  case CoverageViewOptions::OutputFormat::Lcov:
1051
2
    Exporter = llvm::make_unique<CoverageExporterLcov>(*Coverage.get(),
1052
2
                                                       ViewOpts, outs());
1053
2
    break;
1054
12
  }
1055
12
1056
12
  if (SourceFiles.empty())
1057
11
    Exporter->renderRoot(IgnoreFilenameFilters);
1058
1
  else
1059
1
    Exporter->renderRoot(SourceFiles);
1060
12
1061
12
  return 0;
1062
12
}
1063
1064
82
int showMain(int argc, const char *argv[]) {
1065
82
  CodeCoverageTool Tool;
1066
82
  return Tool.run(CodeCoverageTool::Show, argc, argv);
1067
82
}
1068
1069
23
int reportMain(int argc, const char *argv[]) {
1070
23
  CodeCoverageTool Tool;
1071
23
  return Tool.run(CodeCoverageTool::Report, argc, argv);
1072
23
}
1073
1074
13
int exportMain(int argc, const char *argv[]) {
1075
13
  CodeCoverageTool Tool;
1076
13
  return Tool.run(CodeCoverageTool::Export, argc, argv);
1077
13
}