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 CoverageMapping &CM,
22                              const coverage::FunctionRecord &Function) {
23   // Compute the region coverage.
24   size_t NumCodeRegions = 0, CoveredRegions = 0;
25   for (auto &CR : Function.CountedRegions) {
26     if (CR.Kind != CounterMappingRegion::CodeRegion)
27       continue;
28     ++NumCodeRegions;
29     if (CR.ExecutionCount != 0)
30       ++CoveredRegions;
31   }
32 
33   // Compute the line coverage
34   size_t NumLines = 0, CoveredLines = 0;
35   CoverageData CD = CM.getCoverageForFunction(Function);
36   for (const auto &LCS : getLineCoverageStats(CD)) {
37     if (!LCS.isMapped())
38       continue;
39     ++NumLines;
40     if (LCS.getExecutionCount())
41       ++CoveredLines;
42   }
43 
44   return FunctionCoverageSummary(
45       Function.Name, Function.ExecutionCount,
46       RegionCoverageInfo(CoveredRegions, NumCodeRegions),
47       LineCoverageInfo(CoveredLines, NumLines));
48 }
49 
50 FunctionCoverageSummary
51 FunctionCoverageSummary::get(const InstantiationGroup &Group,
52                              ArrayRef<FunctionCoverageSummary> Summaries) {
53   std::string Name;
54   if (Group.hasName()) {
55     Name = Group.getName();
56   } else {
57     llvm::raw_string_ostream OS(Name);
58     OS << "Definition at line " << Group.getLine() << ", column "
59        << Group.getColumn();
60   }
61 
62   FunctionCoverageSummary Summary(Name);
63   Summary.ExecutionCount = Group.getTotalExecutionCount();
64   Summary.RegionCoverage = Summaries[0].RegionCoverage;
65   Summary.LineCoverage = Summaries[0].LineCoverage;
66   for (const auto &FCS : Summaries.drop_front()) {
67     Summary.RegionCoverage.merge(FCS.RegionCoverage);
68     Summary.LineCoverage.merge(FCS.LineCoverage);
69   }
70   return Summary;
71 }
72