Coverage Report

Created: 2018-08-19 14:04

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp
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//===- CoverageSummaryInfo.cpp - Coverage summary for function/file -------===//
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//
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//                     The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// These structures are used to represent code coverage metrics
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// for functions/files.
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//
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//===----------------------------------------------------------------------===//
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#include "CoverageSummaryInfo.h"
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using namespace llvm;
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using namespace coverage;
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FunctionCoverageSummary
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FunctionCoverageSummary::get(const CoverageMapping &CM,
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                             const coverage::FunctionRecord &Function) {
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  // Compute the region coverage.
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  size_t NumCodeRegions = 0, CoveredRegions = 0;
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  for (auto &CR : Function.CountedRegions) {
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    if (CR.Kind != CounterMappingRegion::CodeRegion)
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      continue;
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    ++NumCodeRegions;
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    if (CR.ExecutionCount != 0)
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      ++CoveredRegions;
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  }
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  // Compute the line coverage
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  size_t NumLines = 0, CoveredLines = 0;
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  CoverageData CD = CM.getCoverageForFunction(Function);
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  for (const auto &LCS : getLineCoverageStats(CD)) {
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    if (!LCS.isMapped())
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      continue;
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    ++NumLines;
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    if (LCS.getExecutionCount())
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      ++CoveredLines;
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  }
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  return FunctionCoverageSummary(
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      Function.Name, Function.ExecutionCount,
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      RegionCoverageInfo(CoveredRegions, NumCodeRegions),
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      LineCoverageInfo(CoveredLines, NumLines));
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}
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FunctionCoverageSummary
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FunctionCoverageSummary::get(const InstantiationGroup &Group,
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                             ArrayRef<FunctionCoverageSummary> Summaries) {
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  std::string Name;
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  if (Group.hasName()) {
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    Name = Group.getName();
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  } else {
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    llvm::raw_string_ostream OS(Name);
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    OS << "Definition at line " << Group.getLine() << ", column "
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       << Group.getColumn();
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  }
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  FunctionCoverageSummary Summary(Name);
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  Summary.ExecutionCount = Group.getTotalExecutionCount();
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  Summary.RegionCoverage = Summaries[0].RegionCoverage;
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  Summary.LineCoverage = Summaries[0].LineCoverage;
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  for (const auto &FCS : Summaries.drop_front()) {
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    Summary.RegionCoverage.merge(FCS.RegionCoverage);
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    Summary.LineCoverage.merge(FCS.LineCoverage);
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  }
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  return Summary;
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}