1 //===- CoverageSummaryInfo.cpp - Coverage summary for function/file -------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // These structures are used to represent code coverage metrics 11 // for functions/files. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #include "CoverageSummaryInfo.h" 16 17 using namespace llvm; 18 using namespace coverage; 19 20 FunctionCoverageSummary 21 FunctionCoverageSummary::get(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 for (unsigned FileID = 0, E = Function.Filenames.size(); FileID < E; 35 ++FileID) { 36 // Find the line start and end of the function's source code 37 // in that particular file 38 unsigned LineStart = std::numeric_limits<unsigned>::max(); 39 unsigned LineEnd = 0; 40 for (auto &CR : Function.CountedRegions) { 41 if (CR.FileID != FileID) 42 continue; 43 LineStart = std::min(LineStart, CR.LineStart); 44 LineEnd = std::max(LineEnd, CR.LineEnd); 45 } 46 unsigned LineCount = LineEnd - LineStart + 1; 47 48 // Get counters 49 llvm::SmallVector<uint64_t, 16> ExecutionCounts; 50 ExecutionCounts.resize(LineCount, 0); 51 for (auto &CR : Function.CountedRegions) { 52 if (CR.FileID != FileID) 53 continue; 54 // Ignore the lines that were skipped by the preprocessor. 55 auto ExecutionCount = CR.ExecutionCount; 56 if (CR.Kind == CounterMappingRegion::SkippedRegion) { 57 LineCount -= CR.LineEnd - CR.LineStart + 1; 58 ExecutionCount = 1; 59 } 60 for (unsigned I = CR.LineStart; I <= CR.LineEnd; ++I) 61 ExecutionCounts[I - LineStart] = ExecutionCount; 62 } 63 CoveredLines += LineCount - std::count(ExecutionCounts.begin(), 64 ExecutionCounts.end(), 0); 65 NumLines += LineCount; 66 } 67 return FunctionCoverageSummary( 68 Function.Name, Function.ExecutionCount, 69 RegionCoverageInfo(CoveredRegions, NumCodeRegions), 70 LineCoverageInfo(CoveredLines, 0, NumLines)); 71 } 72
