1 files changed, 70 insertions, 0 deletions
diff --git a/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp b/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp
new file mode 100644
index 0000000000000..1029f7784040d
--- /dev/null
+++ b/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp
@@ -0,0 +1,70 @@
+//===- CoverageSummaryInfo.cpp - Coverage summary for function/file -------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// These structures are used to represent code coverage metrics
+// for functions/files.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CoverageSummaryInfo.h"
+
+using namespace llvm;
+using namespace coverage;
+
+FunctionCoverageSummary
+FunctionCoverageSummary::get(const CoverageMapping &CM,
+                             const coverage::FunctionRecord &Function) {
+  // Compute the region coverage.
+  size_t NumCodeRegions = 0, CoveredRegions = 0;
+  for (auto &CR : Function.CountedRegions) {
+    if (CR.Kind != CounterMappingRegion::CodeRegion)
+      continue;
+    ++NumCodeRegions;
+    if (CR.ExecutionCount != 0)
+      ++CoveredRegions;
+  }
+
+  // Compute the line coverage
+  size_t NumLines = 0, CoveredLines = 0;
+  CoverageData CD = CM.getCoverageForFunction(Function);
+  for (const auto &LCS : getLineCoverageStats(CD)) {
+    if (!LCS.isMapped())
+      continue;
+    ++NumLines;
+    if (LCS.getExecutionCount())
+      ++CoveredLines;
+  }
+
+  return FunctionCoverageSummary(
+      Function.Name, Function.ExecutionCount,
+      RegionCoverageInfo(CoveredRegions, NumCodeRegions),
+      LineCoverageInfo(CoveredLines, NumLines));
+}
+
+FunctionCoverageSummary
+FunctionCoverageSummary::get(const InstantiationGroup &Group,
+                             ArrayRef<FunctionCoverageSummary> Summaries) {
+  std::string Name;
+  if (Group.hasName()) {
+    Name = Group.getName();
+  } else {
+    llvm::raw_string_ostream OS(Name);
+    OS << "Definition at line " << Group.getLine() << ", column "
+       << Group.getColumn();
+  }
+
+  FunctionCoverageSummary Summary(Name);
+  Summary.ExecutionCount = Group.getTotalExecutionCount();
+  Summary.RegionCoverage = Summaries[0].RegionCoverage;
+  Summary.LineCoverage = Summaries[0].LineCoverage;
+  for (const auto &FCS : Summaries.drop_front()) {
+    Summary.RegionCoverage.merge(FCS.RegionCoverage);
+    Summary.LineCoverage.merge(FCS.LineCoverage);
+  }
+  return Summary;
+}