1 files changed, 14 insertions, 2 deletions
diff --git a/contrib/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp b/contrib/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp
index de89750..21aa7ff 100644
--- a/contrib/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp
+++ b/contrib/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp
@@ -19,7 +19,7 @@ using namespace coverage;
 
 FunctionCoverageSummary
 FunctionCoverageSummary::get(const coverage::FunctionRecord &Function) {
-  // Compute the region coverage
+  // Compute the region coverage.
   size_t NumCodeRegions = 0, CoveredRegions = 0;
   for (auto &CR : Function.CountedRegions) {
     if (CR.Kind != CounterMappingRegion::CodeRegion)
@@ -67,5 +67,17 @@ FunctionCoverageSummary::get(const coverage::FunctionRecord &Function) {
   return FunctionCoverageSummary(
       Function.Name, Function.ExecutionCount,
       RegionCoverageInfo(CoveredRegions, NumCodeRegions),
-      LineCoverageInfo(CoveredLines, 0, NumLines));
+      LineCoverageInfo(CoveredLines, NumLines));
+}
+
+void FunctionCoverageSummary::update(const FunctionCoverageSummary &Summary) {
+  ExecutionCount += Summary.ExecutionCount;
+  RegionCoverage.Covered =
+      std::max(RegionCoverage.Covered, Summary.RegionCoverage.Covered);
+  RegionCoverage.NotCovered =
+      std::min(RegionCoverage.NotCovered, Summary.RegionCoverage.NotCovered);
+  LineCoverage.Covered =
+      std::max(LineCoverage.Covered, Summary.LineCoverage.Covered);
+  LineCoverage.NotCovered =
+      std::min(LineCoverage.NotCovered, Summary.LineCoverage.NotCovered);
 }