tools/llvm-cov/CoverageSummaryInfo.cpp

   1 //===- CoverageSummaryInfo.cpp - Coverage summary for function/file -------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // These structures are used to represent code coverage metrics
  10 // for functions/files.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "CoverageSummaryInfo.h"
  15
  16 using namespace llvm;
  17 using namespace coverage;
  18
  19 FunctionCoverageSummary
  20 FunctionCoverageSummary::get(const CoverageMapping &CM,
  21                              const coverage::FunctionRecord &Function) {
  22   // Compute the region coverage.
  23   size_t NumCodeRegions = 0, CoveredRegions = 0;
  24   for (auto &CR : Function.CountedRegions) {
  25     if (CR.Kind != CounterMappingRegion::CodeRegion)
  26       continue;
  27     ++NumCodeRegions;
  28     if (CR.ExecutionCount != 0)
  29       ++CoveredRegions;
  30   }
  31
  32   // Compute the line coverage
  33   size_t NumLines = 0, CoveredLines = 0;
  34   CoverageData CD = CM.getCoverageForFunction(Function);
  35   for (const auto &LCS : getLineCoverageStats(CD)) {
  36     if (!LCS.isMapped())
  37       continue;
  38     ++NumLines;
  39     if (LCS.getExecutionCount())
  40       ++CoveredLines;
  41   }
  42
  43   return FunctionCoverageSummary(
  44       Function.Name, Function.ExecutionCount,
  45       RegionCoverageInfo(CoveredRegions, NumCodeRegions),
  46       LineCoverageInfo(CoveredLines, NumLines));
  47 }
  48
  49 FunctionCoverageSummary
  50 FunctionCoverageSummary::get(const InstantiationGroup &Group,
  51                              ArrayRef<FunctionCoverageSummary> Summaries) {
  52   std::string Name;
  53   if (Group.hasName()) {
  54     Name = Group.getName();
  55   } else {
  56     llvm::raw_string_ostream OS(Name);
  57     OS << "Definition at line " << Group.getLine() << ", column "
  58        << Group.getColumn();
  59   }
  60
  61   FunctionCoverageSummary Summary(Name);
  62   Summary.ExecutionCount = Group.getTotalExecutionCount();
  63   Summary.RegionCoverage = Summaries[0].RegionCoverage;
  64   Summary.LineCoverage = Summaries[0].LineCoverage;
  65   for (const auto &FCS : Summaries.drop_front()) {
  66     Summary.RegionCoverage.merge(FCS.RegionCoverage);
  67     Summary.LineCoverage.merge(FCS.LineCoverage);
  68   }
  69   return Summary;
  70 }