[llvm-branch-commits] [clang] [compiler-rt] [llvm] [Coverage][Single] Enable Branch coverage for SwitchStmt (PR #113112)

NAKAMURA Takumi via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Wed Nov 20 07:30:37 PST 2024


https://github.com/chapuni updated https://github.com/llvm/llvm-project/pull/113112

>From 178b57cbbcb2b21b7d13f90ffd75903417913438 Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic at gmail.com>
Date: Wed, 2 Oct 2024 23:11:36 +0900
Subject: [PATCH 1/9] [Coverage] Move SingleByteCoverage out of CountedRegion

`SingleByteCoverage` is not per-region attribute at least.
At the moment, this change moves it into `FunctionRecord`.
---
 .../ProfileData/Coverage/CoverageMapping.h    | 27 +++++++-------
 .../ProfileData/Coverage/CoverageMapping.cpp  | 36 ++++++++++++-------
 2 files changed, 36 insertions(+), 27 deletions(-)

diff --git a/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h b/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h
index fa07b3a9e8b14f..77c447efe1a7c9 100644
--- a/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h
+++ b/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h
@@ -359,19 +359,15 @@ struct CountedRegion : public CounterMappingRegion {
   uint64_t ExecutionCount;
   uint64_t FalseExecutionCount;
   bool Folded;
-  bool HasSingleByteCoverage;
 
-  CountedRegion(const CounterMappingRegion &R, uint64_t ExecutionCount,
-                bool HasSingleByteCoverage)
+  CountedRegion(const CounterMappingRegion &R, uint64_t ExecutionCount)
       : CounterMappingRegion(R), ExecutionCount(ExecutionCount),
-        FalseExecutionCount(0), Folded(false),
-        HasSingleByteCoverage(HasSingleByteCoverage) {}
+        FalseExecutionCount(0), Folded(false) {}
 
   CountedRegion(const CounterMappingRegion &R, uint64_t ExecutionCount,
-                uint64_t FalseExecutionCount, bool HasSingleByteCoverage)
+                uint64_t FalseExecutionCount)
       : CounterMappingRegion(R), ExecutionCount(ExecutionCount),
-        FalseExecutionCount(FalseExecutionCount), Folded(false),
-        HasSingleByteCoverage(HasSingleByteCoverage) {}
+        FalseExecutionCount(FalseExecutionCount), Folded(false) {}
 };
 
 /// MCDC Record grouping all information together.
@@ -702,9 +698,12 @@ struct FunctionRecord {
   std::vector<MCDCRecord> MCDCRecords;
   /// The number of times this function was executed.
   uint64_t ExecutionCount = 0;
+  bool SingleByteCoverage;
 
-  FunctionRecord(StringRef Name, ArrayRef<StringRef> Filenames)
-      : Name(Name), Filenames(Filenames.begin(), Filenames.end()) {}
+  FunctionRecord(StringRef Name, ArrayRef<StringRef> Filenames,
+                 bool SingleByteCoverage)
+      : Name(Name), Filenames(Filenames.begin(), Filenames.end()),
+        SingleByteCoverage(SingleByteCoverage) {}
 
   FunctionRecord(FunctionRecord &&FR) = default;
   FunctionRecord &operator=(FunctionRecord &&) = default;
@@ -714,11 +713,10 @@ struct FunctionRecord {
   }
 
   void pushRegion(CounterMappingRegion Region, uint64_t Count,
-                  uint64_t FalseCount, bool HasSingleByteCoverage) {
+                  uint64_t FalseCount) {
     if (Region.Kind == CounterMappingRegion::BranchRegion ||
         Region.Kind == CounterMappingRegion::MCDCBranchRegion) {
-      CountedBranchRegions.emplace_back(Region, Count, FalseCount,
-                                        HasSingleByteCoverage);
+      CountedBranchRegions.emplace_back(Region, Count, FalseCount);
       // If both counters are hard-coded to zero, then this region represents a
       // constant-folded branch.
       if (Region.Count.isZero() && Region.FalseCount.isZero())
@@ -727,8 +725,7 @@ struct FunctionRecord {
     }
     if (CountedRegions.empty())
       ExecutionCount = Count;
-    CountedRegions.emplace_back(Region, Count, FalseCount,
-                                HasSingleByteCoverage);
+    CountedRegions.emplace_back(Region, Count, FalseCount);
   }
 };
 
diff --git a/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp b/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
index 18643c6b44485e..a02136d5b0386d 100644
--- a/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
+++ b/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
@@ -808,6 +808,7 @@ Error CoverageMapping::loadFunctionRecord(
   else
     OrigFuncName = getFuncNameWithoutPrefix(OrigFuncName, Record.Filenames[0]);
 
+  bool SingleByteCoverage = ProfileReader.hasSingleByteCoverage();
   CounterMappingContext Ctx(Record.Expressions);
 
   std::vector<uint64_t> Counts;
@@ -855,7 +856,7 @@ Error CoverageMapping::loadFunctionRecord(
     return Error::success();
 
   MCDCDecisionRecorder MCDCDecisions;
-  FunctionRecord Function(OrigFuncName, Record.Filenames);
+  FunctionRecord Function(OrigFuncName, Record.Filenames, SingleByteCoverage);
   for (const auto &Region : Record.MappingRegions) {
     // MCDCDecisionRegion should be handled first since it overlaps with
     // others inside.
@@ -873,8 +874,7 @@ Error CoverageMapping::loadFunctionRecord(
       consumeError(std::move(E));
       return Error::success();
     }
-    Function.pushRegion(Region, *ExecutionCount, *AltExecutionCount,
-                        ProfileReader.hasSingleByteCoverage());
+    Function.pushRegion(Region, *ExecutionCount, *AltExecutionCount);
 
     // Record ExpansionRegion.
     if (Region.Kind == CounterMappingRegion::ExpansionRegion) {
@@ -1270,7 +1270,8 @@ class SegmentBuilder {
 
   /// Combine counts of regions which cover the same area.
   static ArrayRef<CountedRegion>
-  combineRegions(MutableArrayRef<CountedRegion> Regions) {
+  combineRegions(MutableArrayRef<CountedRegion> Regions,
+                 bool SingleByteCoverage) {
     if (Regions.empty())
       return Regions;
     auto Active = Regions.begin();
@@ -1297,9 +1298,7 @@ class SegmentBuilder {
       // We add counts of the regions of the same kind as the active region
       // to handle the both situations.
       if (I->Kind == Active->Kind) {
-        assert(I->HasSingleByteCoverage == Active->HasSingleByteCoverage &&
-               "Regions are generated in different coverage modes");
-        if (I->HasSingleByteCoverage)
+        if (SingleByteCoverage)
           Active->ExecutionCount = Active->ExecutionCount || I->ExecutionCount;
         else
           Active->ExecutionCount += I->ExecutionCount;
@@ -1311,12 +1310,14 @@ class SegmentBuilder {
 public:
   /// Build a sorted list of CoverageSegments from a list of Regions.
   static std::vector<CoverageSegment>
-  buildSegments(MutableArrayRef<CountedRegion> Regions) {
+  buildSegments(MutableArrayRef<CountedRegion> Regions,
+                bool SingleByteCoverage) {
     std::vector<CoverageSegment> Segments;
     SegmentBuilder Builder(Segments);
 
     sortNestedRegions(Regions);
-    ArrayRef<CountedRegion> CombinedRegions = combineRegions(Regions);
+    ArrayRef<CountedRegion> CombinedRegions =
+        combineRegions(Regions, SingleByteCoverage);
 
     LLVM_DEBUG({
       dbgs() << "Combined regions:\n";
@@ -1403,10 +1404,14 @@ CoverageData CoverageMapping::getCoverageForFile(StringRef Filename) const {
   // the filename, we may get back some records that are not in the file.
   ArrayRef<unsigned> RecordIndices =
       getImpreciseRecordIndicesForFilename(Filename);
+  std::optional<bool> SingleByteCoverage;
   for (unsigned RecordIndex : RecordIndices) {
     const FunctionRecord &Function = Functions[RecordIndex];
     auto MainFileID = findMainViewFileID(Filename, Function);
     auto FileIDs = gatherFileIDs(Filename, Function);
+    assert(!SingleByteCoverage ||
+           *SingleByteCoverage == Function.SingleByteCoverage);
+    SingleByteCoverage = Function.SingleByteCoverage;
     for (const auto &CR : Function.CountedRegions)
       if (FileIDs.test(CR.FileID)) {
         Regions.push_back(CR);
@@ -1424,7 +1429,8 @@ CoverageData CoverageMapping::getCoverageForFile(StringRef Filename) const {
   }
 
   LLVM_DEBUG(dbgs() << "Emitting segments for file: " << Filename << "\n");
-  FileCoverage.Segments = SegmentBuilder::buildSegments(Regions);
+  FileCoverage.Segments =
+      SegmentBuilder::buildSegments(Regions, *SingleByteCoverage);
 
   return FileCoverage;
 }
@@ -1480,7 +1486,8 @@ CoverageMapping::getCoverageForFunction(const FunctionRecord &Function) const {
 
   LLVM_DEBUG(dbgs() << "Emitting segments for function: " << Function.Name
                     << "\n");
-  FunctionCoverage.Segments = SegmentBuilder::buildSegments(Regions);
+  FunctionCoverage.Segments =
+      SegmentBuilder::buildSegments(Regions, Function.SingleByteCoverage);
 
   return FunctionCoverage;
 }
@@ -1490,8 +1497,12 @@ CoverageData CoverageMapping::getCoverageForExpansion(
   CoverageData ExpansionCoverage(
       Expansion.Function.Filenames[Expansion.FileID]);
   std::vector<CountedRegion> Regions;
+  std::optional<bool> SingleByteCoverage;
   for (const auto &CR : Expansion.Function.CountedRegions)
     if (CR.FileID == Expansion.FileID) {
+      assert(!SingleByteCoverage ||
+             *SingleByteCoverage == Expansion.Function.SingleByteCoverage);
+      SingleByteCoverage = Expansion.Function.SingleByteCoverage;
       Regions.push_back(CR);
       if (isExpansion(CR, Expansion.FileID))
         ExpansionCoverage.Expansions.emplace_back(CR, Expansion.Function);
@@ -1503,7 +1514,8 @@ CoverageData CoverageMapping::getCoverageForExpansion(
 
   LLVM_DEBUG(dbgs() << "Emitting segments for expansion of file "
                     << Expansion.FileID << "\n");
-  ExpansionCoverage.Segments = SegmentBuilder::buildSegments(Regions);
+  ExpansionCoverage.Segments =
+      SegmentBuilder::buildSegments(Regions, *SingleByteCoverage);
 
   return ExpansionCoverage;
 }

>From aacb50ddf87d96b4a0644c7ef5d0a86dc94f069b Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic at gmail.com>
Date: Wed, 2 Oct 2024 23:25:52 +0900
Subject: [PATCH 2/9] [Coverage] Make SingleByteCoverage work consistent to
 merging

- Round `Counts` as 1/0
- Confirm both `ExecutionCount` and `AltExecutionCount` are in range.
---
 compiler-rt/test/profile/instrprof-block-coverage.c | 2 +-
 compiler-rt/test/profile/instrprof-entry-coverage.c | 2 +-
 llvm/include/llvm/ProfileData/InstrProf.h           | 5 ++++-
 llvm/lib/ProfileData/Coverage/CoverageMapping.cpp   | 3 +++
 llvm/lib/ProfileData/InstrProf.cpp                  | 2 +-
 llvm/lib/ProfileData/InstrProfReader.cpp            | 1 +
 6 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/compiler-rt/test/profile/instrprof-block-coverage.c b/compiler-rt/test/profile/instrprof-block-coverage.c
index 829d5af8dc3f9e..8d924e1cac64d8 100644
--- a/compiler-rt/test/profile/instrprof-block-coverage.c
+++ b/compiler-rt/test/profile/instrprof-block-coverage.c
@@ -49,4 +49,4 @@ int main(int argc, char *argv[]) {
 
 // CHECK-ERROR-NOT: warning: {{.*}}: Found inconsistent block coverage
 
-// COUNTS: Maximum function count: 4
+// COUNTS: Maximum function count: 1
diff --git a/compiler-rt/test/profile/instrprof-entry-coverage.c b/compiler-rt/test/profile/instrprof-entry-coverage.c
index 1c6816ba01964b..b93a4e0c43ccd6 100644
--- a/compiler-rt/test/profile/instrprof-entry-coverage.c
+++ b/compiler-rt/test/profile/instrprof-entry-coverage.c
@@ -36,4 +36,4 @@ int main(int argc, char *argv[]) {
 // CHECK-DAG: foo
 // CHECK-DAG: bar
 
-// COUNTS: Maximum function count: 2
+// COUNTS: Maximum function count: 1
diff --git a/llvm/include/llvm/ProfileData/InstrProf.h b/llvm/include/llvm/ProfileData/InstrProf.h
index b0b2258735e2ae..df9e76966bf42b 100644
--- a/llvm/include/llvm/ProfileData/InstrProf.h
+++ b/llvm/include/llvm/ProfileData/InstrProf.h
@@ -830,6 +830,7 @@ struct InstrProfValueSiteRecord {
 /// Profiling information for a single function.
 struct InstrProfRecord {
   std::vector<uint64_t> Counts;
+  bool SingleByteCoverage = false;
   std::vector<uint8_t> BitmapBytes;
 
   InstrProfRecord() = default;
@@ -839,13 +840,15 @@ struct InstrProfRecord {
       : Counts(std::move(Counts)), BitmapBytes(std::move(BitmapBytes)) {}
   InstrProfRecord(InstrProfRecord &&) = default;
   InstrProfRecord(const InstrProfRecord &RHS)
-      : Counts(RHS.Counts), BitmapBytes(RHS.BitmapBytes),
+      : Counts(RHS.Counts), SingleByteCoverage(RHS.SingleByteCoverage),
+        BitmapBytes(RHS.BitmapBytes),
         ValueData(RHS.ValueData
                       ? std::make_unique<ValueProfData>(*RHS.ValueData)
                       : nullptr) {}
   InstrProfRecord &operator=(InstrProfRecord &&) = default;
   InstrProfRecord &operator=(const InstrProfRecord &RHS) {
     Counts = RHS.Counts;
+    SingleByteCoverage = RHS.SingleByteCoverage;
     BitmapBytes = RHS.BitmapBytes;
     if (!RHS.ValueData) {
       ValueData = nullptr;
diff --git a/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp b/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
index a02136d5b0386d..bc765c59381718 100644
--- a/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
+++ b/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
@@ -874,6 +874,9 @@ Error CoverageMapping::loadFunctionRecord(
       consumeError(std::move(E));
       return Error::success();
     }
+    assert(!SingleByteCoverage ||
+           (0 <= *ExecutionCount && *ExecutionCount <= 1 &&
+            0 <= *AltExecutionCount && *AltExecutionCount <= 1));
     Function.pushRegion(Region, *ExecutionCount, *AltExecutionCount);
 
     // Record ExpansionRegion.
diff --git a/llvm/lib/ProfileData/InstrProf.cpp b/llvm/lib/ProfileData/InstrProf.cpp
index b9937c9429b77d..0f6677b4d35718 100644
--- a/llvm/lib/ProfileData/InstrProf.cpp
+++ b/llvm/lib/ProfileData/InstrProf.cpp
@@ -952,7 +952,7 @@ void InstrProfRecord::merge(InstrProfRecord &Other, uint64_t Weight,
       Value = getInstrMaxCountValue();
       Overflowed = true;
     }
-    Counts[I] = Value;
+    Counts[I] = (SingleByteCoverage && Value != 0 ? 1 : Value);
     if (Overflowed)
       Warn(instrprof_error::counter_overflow);
   }
diff --git a/llvm/lib/ProfileData/InstrProfReader.cpp b/llvm/lib/ProfileData/InstrProfReader.cpp
index b90617c74f6d13..a07d7f573275ba 100644
--- a/llvm/lib/ProfileData/InstrProfReader.cpp
+++ b/llvm/lib/ProfileData/InstrProfReader.cpp
@@ -743,6 +743,7 @@ Error RawInstrProfReader<IntPtrT>::readRawCounts(
 
   Record.Counts.clear();
   Record.Counts.reserve(NumCounters);
+  Record.SingleByteCoverage = hasSingleByteCoverage();
   for (uint32_t I = 0; I < NumCounters; I++) {
     const char *Ptr =
         CountersStart + CounterBaseOffset + I * getCounterTypeSize();

>From b9bbc7cac3076594cd326ffa7f2d4fc4a92fabb9 Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic at gmail.com>
Date: Sat, 5 Oct 2024 10:43:26 +0900
Subject: [PATCH 3/9] Rework. (Also reverts  "[Coverage] Move
 SingleByteCoverage out of CountedRegion")

---
 .../test/profile/instrprof-block-coverage.c   |  2 +-
 .../test/profile/instrprof-entry-coverage.c   |  2 +-
 .../ProfileData/Coverage/CoverageMapping.h    | 27 +++++++------
 llvm/include/llvm/ProfileData/InstrProf.h     |  5 +--
 .../ProfileData/Coverage/CoverageMapping.cpp  | 40 +++++++------------
 llvm/lib/ProfileData/InstrProf.cpp            |  2 +-
 llvm/lib/ProfileData/InstrProfReader.cpp      |  1 -
 7 files changed, 33 insertions(+), 46 deletions(-)

diff --git a/compiler-rt/test/profile/instrprof-block-coverage.c b/compiler-rt/test/profile/instrprof-block-coverage.c
index 8d924e1cac64d8..829d5af8dc3f9e 100644
--- a/compiler-rt/test/profile/instrprof-block-coverage.c
+++ b/compiler-rt/test/profile/instrprof-block-coverage.c
@@ -49,4 +49,4 @@ int main(int argc, char *argv[]) {
 
 // CHECK-ERROR-NOT: warning: {{.*}}: Found inconsistent block coverage
 
-// COUNTS: Maximum function count: 1
+// COUNTS: Maximum function count: 4
diff --git a/compiler-rt/test/profile/instrprof-entry-coverage.c b/compiler-rt/test/profile/instrprof-entry-coverage.c
index b93a4e0c43ccd6..1c6816ba01964b 100644
--- a/compiler-rt/test/profile/instrprof-entry-coverage.c
+++ b/compiler-rt/test/profile/instrprof-entry-coverage.c
@@ -36,4 +36,4 @@ int main(int argc, char *argv[]) {
 // CHECK-DAG: foo
 // CHECK-DAG: bar
 
-// COUNTS: Maximum function count: 1
+// COUNTS: Maximum function count: 2
diff --git a/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h b/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h
index 77c447efe1a7c9..fa07b3a9e8b14f 100644
--- a/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h
+++ b/llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h
@@ -359,15 +359,19 @@ struct CountedRegion : public CounterMappingRegion {
   uint64_t ExecutionCount;
   uint64_t FalseExecutionCount;
   bool Folded;
+  bool HasSingleByteCoverage;
 
-  CountedRegion(const CounterMappingRegion &R, uint64_t ExecutionCount)
+  CountedRegion(const CounterMappingRegion &R, uint64_t ExecutionCount,
+                bool HasSingleByteCoverage)
       : CounterMappingRegion(R), ExecutionCount(ExecutionCount),
-        FalseExecutionCount(0), Folded(false) {}
+        FalseExecutionCount(0), Folded(false),
+        HasSingleByteCoverage(HasSingleByteCoverage) {}
 
   CountedRegion(const CounterMappingRegion &R, uint64_t ExecutionCount,
-                uint64_t FalseExecutionCount)
+                uint64_t FalseExecutionCount, bool HasSingleByteCoverage)
       : CounterMappingRegion(R), ExecutionCount(ExecutionCount),
-        FalseExecutionCount(FalseExecutionCount), Folded(false) {}
+        FalseExecutionCount(FalseExecutionCount), Folded(false),
+        HasSingleByteCoverage(HasSingleByteCoverage) {}
 };
 
 /// MCDC Record grouping all information together.
@@ -698,12 +702,9 @@ struct FunctionRecord {
   std::vector<MCDCRecord> MCDCRecords;
   /// The number of times this function was executed.
   uint64_t ExecutionCount = 0;
-  bool SingleByteCoverage;
 
-  FunctionRecord(StringRef Name, ArrayRef<StringRef> Filenames,
-                 bool SingleByteCoverage)
-      : Name(Name), Filenames(Filenames.begin(), Filenames.end()),
-        SingleByteCoverage(SingleByteCoverage) {}
+  FunctionRecord(StringRef Name, ArrayRef<StringRef> Filenames)
+      : Name(Name), Filenames(Filenames.begin(), Filenames.end()) {}
 
   FunctionRecord(FunctionRecord &&FR) = default;
   FunctionRecord &operator=(FunctionRecord &&) = default;
@@ -713,10 +714,11 @@ struct FunctionRecord {
   }
 
   void pushRegion(CounterMappingRegion Region, uint64_t Count,
-                  uint64_t FalseCount) {
+                  uint64_t FalseCount, bool HasSingleByteCoverage) {
     if (Region.Kind == CounterMappingRegion::BranchRegion ||
         Region.Kind == CounterMappingRegion::MCDCBranchRegion) {
-      CountedBranchRegions.emplace_back(Region, Count, FalseCount);
+      CountedBranchRegions.emplace_back(Region, Count, FalseCount,
+                                        HasSingleByteCoverage);
       // If both counters are hard-coded to zero, then this region represents a
       // constant-folded branch.
       if (Region.Count.isZero() && Region.FalseCount.isZero())
@@ -725,7 +727,8 @@ struct FunctionRecord {
     }
     if (CountedRegions.empty())
       ExecutionCount = Count;
-    CountedRegions.emplace_back(Region, Count, FalseCount);
+    CountedRegions.emplace_back(Region, Count, FalseCount,
+                                HasSingleByteCoverage);
   }
 };
 
diff --git a/llvm/include/llvm/ProfileData/InstrProf.h b/llvm/include/llvm/ProfileData/InstrProf.h
index df9e76966bf42b..b0b2258735e2ae 100644
--- a/llvm/include/llvm/ProfileData/InstrProf.h
+++ b/llvm/include/llvm/ProfileData/InstrProf.h
@@ -830,7 +830,6 @@ struct InstrProfValueSiteRecord {
 /// Profiling information for a single function.
 struct InstrProfRecord {
   std::vector<uint64_t> Counts;
-  bool SingleByteCoverage = false;
   std::vector<uint8_t> BitmapBytes;
 
   InstrProfRecord() = default;
@@ -840,15 +839,13 @@ struct InstrProfRecord {
       : Counts(std::move(Counts)), BitmapBytes(std::move(BitmapBytes)) {}
   InstrProfRecord(InstrProfRecord &&) = default;
   InstrProfRecord(const InstrProfRecord &RHS)
-      : Counts(RHS.Counts), SingleByteCoverage(RHS.SingleByteCoverage),
-        BitmapBytes(RHS.BitmapBytes),
+      : Counts(RHS.Counts), BitmapBytes(RHS.BitmapBytes),
         ValueData(RHS.ValueData
                       ? std::make_unique<ValueProfData>(*RHS.ValueData)
                       : nullptr) {}
   InstrProfRecord &operator=(InstrProfRecord &&) = default;
   InstrProfRecord &operator=(const InstrProfRecord &RHS) {
     Counts = RHS.Counts;
-    SingleByteCoverage = RHS.SingleByteCoverage;
     BitmapBytes = RHS.BitmapBytes;
     if (!RHS.ValueData) {
       ValueData = nullptr;
diff --git a/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp b/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
index bc765c59381718..9a03dede84b6df 100644
--- a/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
+++ b/llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
@@ -856,7 +856,7 @@ Error CoverageMapping::loadFunctionRecord(
     return Error::success();
 
   MCDCDecisionRecorder MCDCDecisions;
-  FunctionRecord Function(OrigFuncName, Record.Filenames, SingleByteCoverage);
+  FunctionRecord Function(OrigFuncName, Record.Filenames);
   for (const auto &Region : Record.MappingRegions) {
     // MCDCDecisionRegion should be handled first since it overlaps with
     // others inside.
@@ -874,10 +874,10 @@ Error CoverageMapping::loadFunctionRecord(
       consumeError(std::move(E));
       return Error::success();
     }
-    assert(!SingleByteCoverage ||
-           (0 <= *ExecutionCount && *ExecutionCount <= 1 &&
-            0 <= *AltExecutionCount && *AltExecutionCount <= 1));
-    Function.pushRegion(Region, *ExecutionCount, *AltExecutionCount);
+    Function.pushRegion(
+        Region, (SingleByteCoverage && *ExecutionCount ? 1 : *ExecutionCount),
+        (SingleByteCoverage && *AltExecutionCount ? 1 : *AltExecutionCount),
+        SingleByteCoverage);
 
     // Record ExpansionRegion.
     if (Region.Kind == CounterMappingRegion::ExpansionRegion) {
@@ -1273,8 +1273,7 @@ class SegmentBuilder {
 
   /// Combine counts of regions which cover the same area.
   static ArrayRef<CountedRegion>
-  combineRegions(MutableArrayRef<CountedRegion> Regions,
-                 bool SingleByteCoverage) {
+  combineRegions(MutableArrayRef<CountedRegion> Regions) {
     if (Regions.empty())
       return Regions;
     auto Active = Regions.begin();
@@ -1301,7 +1300,9 @@ class SegmentBuilder {
       // We add counts of the regions of the same kind as the active region
       // to handle the both situations.
       if (I->Kind == Active->Kind) {
-        if (SingleByteCoverage)
+        assert(I->HasSingleByteCoverage == Active->HasSingleByteCoverage &&
+               "Regions are generated in different coverage modes");
+        if (I->HasSingleByteCoverage)
           Active->ExecutionCount = Active->ExecutionCount || I->ExecutionCount;
         else
           Active->ExecutionCount += I->ExecutionCount;
@@ -1313,14 +1314,12 @@ class SegmentBuilder {
 public:
   /// Build a sorted list of CoverageSegments from a list of Regions.
   static std::vector<CoverageSegment>
-  buildSegments(MutableArrayRef<CountedRegion> Regions,
-                bool SingleByteCoverage) {
+  buildSegments(MutableArrayRef<CountedRegion> Regions) {
     std::vector<CoverageSegment> Segments;
     SegmentBuilder Builder(Segments);
 
     sortNestedRegions(Regions);
-    ArrayRef<CountedRegion> CombinedRegions =
-        combineRegions(Regions, SingleByteCoverage);
+    ArrayRef<CountedRegion> CombinedRegions = combineRegions(Regions);
 
     LLVM_DEBUG({
       dbgs() << "Combined regions:\n";
@@ -1407,14 +1406,10 @@ CoverageData CoverageMapping::getCoverageForFile(StringRef Filename) const {
   // the filename, we may get back some records that are not in the file.
   ArrayRef<unsigned> RecordIndices =
       getImpreciseRecordIndicesForFilename(Filename);
-  std::optional<bool> SingleByteCoverage;
   for (unsigned RecordIndex : RecordIndices) {
     const FunctionRecord &Function = Functions[RecordIndex];
     auto MainFileID = findMainViewFileID(Filename, Function);
     auto FileIDs = gatherFileIDs(Filename, Function);
-    assert(!SingleByteCoverage ||
-           *SingleByteCoverage == Function.SingleByteCoverage);
-    SingleByteCoverage = Function.SingleByteCoverage;
     for (const auto &CR : Function.CountedRegions)
       if (FileIDs.test(CR.FileID)) {
         Regions.push_back(CR);
@@ -1432,8 +1427,7 @@ CoverageData CoverageMapping::getCoverageForFile(StringRef Filename) const {
   }
 
   LLVM_DEBUG(dbgs() << "Emitting segments for file: " << Filename << "\n");
-  FileCoverage.Segments =
-      SegmentBuilder::buildSegments(Regions, *SingleByteCoverage);
+  FileCoverage.Segments = SegmentBuilder::buildSegments(Regions);
 
   return FileCoverage;
 }
@@ -1489,8 +1483,7 @@ CoverageMapping::getCoverageForFunction(const FunctionRecord &Function) const {
 
   LLVM_DEBUG(dbgs() << "Emitting segments for function: " << Function.Name
                     << "\n");
-  FunctionCoverage.Segments =
-      SegmentBuilder::buildSegments(Regions, Function.SingleByteCoverage);
+  FunctionCoverage.Segments = SegmentBuilder::buildSegments(Regions);
 
   return FunctionCoverage;
 }
@@ -1500,12 +1493,8 @@ CoverageData CoverageMapping::getCoverageForExpansion(
   CoverageData ExpansionCoverage(
       Expansion.Function.Filenames[Expansion.FileID]);
   std::vector<CountedRegion> Regions;
-  std::optional<bool> SingleByteCoverage;
   for (const auto &CR : Expansion.Function.CountedRegions)
     if (CR.FileID == Expansion.FileID) {
-      assert(!SingleByteCoverage ||
-             *SingleByteCoverage == Expansion.Function.SingleByteCoverage);
-      SingleByteCoverage = Expansion.Function.SingleByteCoverage;
       Regions.push_back(CR);
       if (isExpansion(CR, Expansion.FileID))
         ExpansionCoverage.Expansions.emplace_back(CR, Expansion.Function);
@@ -1517,8 +1506,7 @@ CoverageData CoverageMapping::getCoverageForExpansion(
 
   LLVM_DEBUG(dbgs() << "Emitting segments for expansion of file "
                     << Expansion.FileID << "\n");
-  ExpansionCoverage.Segments =
-      SegmentBuilder::buildSegments(Regions, *SingleByteCoverage);
+  ExpansionCoverage.Segments = SegmentBuilder::buildSegments(Regions);
 
   return ExpansionCoverage;
 }
diff --git a/llvm/lib/ProfileData/InstrProf.cpp b/llvm/lib/ProfileData/InstrProf.cpp
index 0f6677b4d35718..b9937c9429b77d 100644
--- a/llvm/lib/ProfileData/InstrProf.cpp
+++ b/llvm/lib/ProfileData/InstrProf.cpp
@@ -952,7 +952,7 @@ void InstrProfRecord::merge(InstrProfRecord &Other, uint64_t Weight,
       Value = getInstrMaxCountValue();
       Overflowed = true;
     }
-    Counts[I] = (SingleByteCoverage && Value != 0 ? 1 : Value);
+    Counts[I] = Value;
     if (Overflowed)
       Warn(instrprof_error::counter_overflow);
   }
diff --git a/llvm/lib/ProfileData/InstrProfReader.cpp b/llvm/lib/ProfileData/InstrProfReader.cpp
index a07d7f573275ba..b90617c74f6d13 100644
--- a/llvm/lib/ProfileData/InstrProfReader.cpp
+++ b/llvm/lib/ProfileData/InstrProfReader.cpp
@@ -743,7 +743,6 @@ Error RawInstrProfReader<IntPtrT>::readRawCounts(
 
   Record.Counts.clear();
   Record.Counts.reserve(NumCounters);
-  Record.SingleByteCoverage = hasSingleByteCoverage();
   for (uint32_t I = 0; I < NumCounters; I++) {
     const char *Ptr =
         CountersStart + CounterBaseOffset + I * getCounterTypeSize();

>From ec05cc37e1177f06c9a44a1e39dadc9306cc5c68 Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic at gmail.com>
Date: Mon, 21 Oct 2024 08:09:31 +0900
Subject: [PATCH 4/9] [Coverage][Single] Enable Branch coverage for SwitchStmt

---
 clang/lib/CodeGen/CGStmt.cpp                  | 12 ++++++++++
 clang/lib/CodeGen/CoverageMappingGen.cpp      | 22 ++++++++++---------
 .../CoverageMapping/single-byte-counters.cpp  | 13 ++++++-----
 3 files changed, 32 insertions(+), 15 deletions(-)

diff --git a/clang/lib/CodeGen/CGStmt.cpp b/clang/lib/CodeGen/CGStmt.cpp
index dbc1ce9bf993cd..80fe5cf183de16 100644
--- a/clang/lib/CodeGen/CGStmt.cpp
+++ b/clang/lib/CodeGen/CGStmt.cpp
@@ -2259,6 +2259,18 @@ void CodeGenFunction::EmitSwitchStmt(const SwitchStmt &S) {
 
   ConditionScope.ForceCleanup();
 
+  // Close the last case (or DefaultBlock).
+  EmitBranch(SwitchExit.getBlock());
+
+  // Insert a False Counter if SwitchStmt doesn't have DefaultStmt.
+  if (getIsCounterPair(S.getCond()).second) {
+    auto *ImplicitDefaultBlock = createBasicBlock("sw.false");
+    EmitBlock(ImplicitDefaultBlock);
+    incrementProfileCounter(true, S.getCond());
+    Builder.CreateBr(SwitchInsn->getDefaultDest());
+    SwitchInsn->setDefaultDest(ImplicitDefaultBlock);
+  }
+
   // Emit continuation.
   EmitBlock(SwitchExit.getBlock(), true);
   incrementProfileCounter(&S);
diff --git a/clang/lib/CodeGen/CoverageMappingGen.cpp b/clang/lib/CodeGen/CoverageMappingGen.cpp
index a331d5bc68286b..c5fdf23299e4e9 100644
--- a/clang/lib/CodeGen/CoverageMappingGen.cpp
+++ b/clang/lib/CodeGen/CoverageMappingGen.cpp
@@ -958,6 +958,14 @@ struct CounterCoverageMappingBuilder
     return {ExecCnt, SkipCnt};
   }
 
+  Counter getSwitchImplicitDefaultCounter(const Stmt *Cond, Counter ParentCount,
+                                          Counter CaseCountSum) {
+    return (
+        llvm::EnableSingleByteCoverage
+            ? Counter::getCounter(CounterMap[Cond].second = NextCounterNum++)
+            : subtractCounters(ParentCount, CaseCountSum));
+  }
+
   bool IsCounterEqual(Counter OutCount, Counter ParentCount) {
     if (OutCount == ParentCount)
       return true;
@@ -1885,7 +1893,7 @@ struct CounterCoverageMappingBuilder
       propagateCounts(Counter::getZero(), Body);
     BreakContinue BC = BreakContinueStack.pop_back_val();
 
-    if (!BreakContinueStack.empty() && !llvm::EnableSingleByteCoverage)
+    if (!BreakContinueStack.empty())
       BreakContinueStack.back().ContinueCount = addCounters(
           BreakContinueStack.back().ContinueCount, BC.ContinueCount);
 
@@ -1900,11 +1908,6 @@ struct CounterCoverageMappingBuilder
     MostRecentLocation = getStart(S);
     handleFileExit(ExitLoc);
 
-    // When single byte coverage mode is enabled, do not create branch region by
-    // early returning.
-    if (llvm::EnableSingleByteCoverage)
-      return;
-
     // Create a Branch Region around each Case. Subtract the case's
     // counter from the Parent counter to track the "False" branch count.
     Counter CaseCountSum;
@@ -1920,7 +1923,8 @@ struct CounterCoverageMappingBuilder
     // the hidden branch, which will be added later by the CodeGen. This region
     // will be associated with the switch statement's condition.
     if (!HasDefaultCase) {
-      Counter DefaultCount = subtractCounters(ParentCount, CaseCountSum);
+      Counter DefaultCount = getSwitchImplicitDefaultCounter(
+          S->getCond(), ParentCount, CaseCountSum);
       createBranchRegion(S->getCond(), Counter::getZero(), DefaultCount);
     }
   }
@@ -1929,9 +1933,7 @@ struct CounterCoverageMappingBuilder
     extendRegion(S);
 
     SourceMappingRegion &Parent = getRegion();
-    Counter Count = llvm::EnableSingleByteCoverage
-                        ? getRegionCounter(S)
-                        : addCounters(Parent.getCounter(), getRegionCounter(S));
+    Counter Count = addCounters(Parent.getCounter(), getRegionCounter(S));
 
     // Reuse the existing region if it starts at our label. This is typical of
     // the first case in a switch.
diff --git a/clang/test/CoverageMapping/single-byte-counters.cpp b/clang/test/CoverageMapping/single-byte-counters.cpp
index d20b695bc2636a..464fa370d86f09 100644
--- a/clang/test/CoverageMapping/single-byte-counters.cpp
+++ b/clang/test/CoverageMapping/single-byte-counters.cpp
@@ -34,19 +34,22 @@ int testIfElseReturn(int x) { // CHECK-NEXT: File 0, [[@LINE]]:29 -> [[@LINE+9]]
 }
 
 // CHECK-NEXT: testSwitch
-int testSwitch(int x) { // CHECK-NEXT: File 0, [[@LINE]]:23 -> [[@LINE+17]]:2 = [[C30:#0]]
+int testSwitch(int x) { // CHECK-NEXT: File 0, [[@LINE]]:23 -> [[@LINE+20]]:2 = [[C30:#0]]
   int result;
   switch (x) {
-                        // CHECK-NEXT: Gap,File 0, [[@LINE-1]]:14 -> [[@LINE+10]]:15 = 0
-  case 1:               // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:10 = [[C31:#2]]
+                        // CHECK-NEXT: Gap,File 0, [[@LINE-1]]:14 -> [[@LINE+13]]:15 = 0
+  case 1:               // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+3]]:10 = [[C31:#2]]
+                        // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = [[C31]], 0
     result = 1;
     break;
                         // CHECK-NEXT: Gap,File 0, [[@LINE-1]]:11 -> [[@LINE+1]]:3 = 0
-  case 2:               // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:10 = [[C32:#3]]
+  case 2:               // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+3]]:10 = [[C32:#3]]
+                        // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = [[C32]], 0
     result = 2;
     break;
                         // CHECK-NEXT: Gap,File 0, [[@LINE-1]]:11 -> [[@LINE+1]]:3 = 0
-  default:              // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:15 = [[C3D:#4]]
+  default:              // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:15 = [[C3D:#4]]
+                        // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:10 = [[C3D]], 0
     result = 0;
   }
                         // CHECK-NEXT: Gap,File 0, [[@LINE-1]]:4 -> [[@LINE+1]]:3 = [[C3E:#1]]

>From 97a4a8f40afb53250639c29e193edd814cb82f58 Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic at gmail.com>
Date: Wed, 20 Nov 2024 23:33:51 +0900
Subject: [PATCH 5/9] test/llvm-cov: Transform %.c* tests to {%.test,
 Inputs/%.c*}

And reformat. NFC.
---
 .../{ => Inputs}/branch-logical-mixed.cpp     | 13 +---
 .../llvm-cov/{ => Inputs}/branch-macros.cpp   | 14 +---
 .../Inputs/branch-showBranchPercentage.c      | 58 +++++++++++++++
 .../llvm-cov/Inputs/branch-templates.cpp      | 38 ++++++++++
 .../Inputs/showLineExecutionCounts.cpp        | 29 ++++++++
 .../test/tools/llvm-cov/branch-c-general.test |  2 +-
 .../tools/llvm-cov/branch-logical-mixed.test  | 11 +++
 llvm/test/tools/llvm-cov/branch-macros.test   | 11 +++
 .../tools/llvm-cov/branch-noShowBranch.test   |  8 +-
 ...age.c => branch-showBranchPercentage.test} | 57 +--------------
 ...ch-templates.cpp => branch-templates.test} | 46 ++----------
 .../llvm-cov/showLineExecutionCounts.cpp      | 73 -------------------
 .../llvm-cov/showLineExecutionCounts.test     | 43 +++++++++++
 13 files changed, 209 insertions(+), 194 deletions(-)
 rename llvm/test/tools/llvm-cov/{ => Inputs}/branch-logical-mixed.cpp (80%)
 rename llvm/test/tools/llvm-cov/{ => Inputs}/branch-macros.cpp (70%)
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/branch-showBranchPercentage.c
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/branch-templates.cpp
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp
 create mode 100644 llvm/test/tools/llvm-cov/branch-logical-mixed.test
 create mode 100644 llvm/test/tools/llvm-cov/branch-macros.test
 rename llvm/test/tools/llvm-cov/{branch-showBranchPercentage.c => branch-showBranchPercentage.test} (51%)
 rename llvm/test/tools/llvm-cov/{branch-templates.cpp => branch-templates.test} (54%)
 delete mode 100644 llvm/test/tools/llvm-cov/showLineExecutionCounts.cpp
 create mode 100644 llvm/test/tools/llvm-cov/showLineExecutionCounts.test

diff --git a/llvm/test/tools/llvm-cov/branch-logical-mixed.cpp b/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed.cpp
similarity index 80%
rename from llvm/test/tools/llvm-cov/branch-logical-mixed.cpp
rename to llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed.cpp
index f5f78711244677..0a7d8d89671158 100644
--- a/llvm/test/tools/llvm-cov/branch-logical-mixed.cpp
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed.cpp
@@ -1,6 +1,6 @@
-// RUN: llvm-profdata merge %S/Inputs/branch-logical-mixed.proftext -o %t.profdata
-// RUN: llvm-cov show --show-branches=count %S/Inputs/branch-logical-mixed.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S %s | FileCheck %s
-// RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-logical-mixed.o32l -instr-profile %t.profdata -show-functions -path-equivalence=/tmp,%S %s | FileCheck %s -check-prefix=REPORT
+
+
+
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -81,10 +81,3 @@ int main(int argc, char *argv[])
   __llvm_profile_write_file();
   return 0;
 }
-
-// REPORT: Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
-// REPORT-NEXT: ---
-// REPORT-NEXT: _Z4funcii                        77       9  88.31%        68       3  95.59%        80      32  60.00%
-// REPORT-NEXT: main                              1       0 100.00%         5       0 100.00%         0       0   0.00%
-// REPORT-NEXT: ---
-// REPORT-NEXT: TOTAL                            78       9  88.46%        73       3  95.89%        80      32  60.00%
diff --git a/llvm/test/tools/llvm-cov/branch-macros.cpp b/llvm/test/tools/llvm-cov/Inputs/branch-macros.cpp
similarity index 70%
rename from llvm/test/tools/llvm-cov/branch-macros.cpp
rename to llvm/test/tools/llvm-cov/Inputs/branch-macros.cpp
index 73042ac397d406..712b2790f774aa 100644
--- a/llvm/test/tools/llvm-cov/branch-macros.cpp
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-macros.cpp
@@ -1,6 +1,6 @@
-// RUN: llvm-profdata merge %S/Inputs/branch-macros.proftext -o %t.profdata
-// RUN: llvm-cov show --show-expansions --show-branches=count %S/Inputs/branch-macros.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S %s | FileCheck %s
-// RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-macros.o32l -instr-profile %t.profdata -show-functions -path-equivalence=/tmp,%S %s | FileCheck %s -check-prefix=REPORT
+
+
+
 
 #define COND1 (a == b)
 #define COND2 (a != b)
@@ -50,11 +50,3 @@ int main(int argc, char *argv[])
   __llvm_profile_write_file();
   return 0;
 }
-
-// REPORT: Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
-// REPORT-NEXT: ---
-// REPORT-NEXT: _Z4funcii                        28       4  85.71%        18       0 100.00%        30      14  53.33%
-// REPORT-NEXT: _Z5func2ii                       13       1  92.31%         8       0 100.00%        10       2  80.00%
-// REPORT-NEXT: main                              1       0 100.00%         6       0 100.00%         0       0   0.00%
-// REPORT-NEXT: ---
-// REPORT-NEXT: TOTAL                            42       5  88.10%        32       0 100.00% 40      16  60.00%
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-showBranchPercentage.c b/llvm/test/tools/llvm-cov/Inputs/branch-showBranchPercentage.c
new file mode 100644
index 00000000000000..c41739ff0b22f1
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-showBranchPercentage.c
@@ -0,0 +1,58 @@
+
+
+
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+extern void __llvm_profile_write_file(void);
+
+int main(int argc, char *argv[])
+{
+  int i = 0;
+  if (argc < 3)                       // CHECK: Branch ([[@LINE]]:7): [True: 16.67%, False: 83.33%]
+  {
+    __llvm_profile_write_file();
+    return 0;
+  }
+
+  int a = atoi(argv[1]);
+  int b = atoi(argv[2]);
+
+                                      // CHECK: Branch ([[@LINE+4]]:8): [True: 20.00%, False: 80.00%]
+                                      // CHECK: Branch ([[@LINE+3]]:18): [True: 0.00%, False: 100.00%]
+                                      // CHECK: Branch ([[@LINE+2]]:29): [True: 0.00%, False: 100.00%]
+                                      // CHECK: Branch ([[@LINE+1]]:40): [True: 40.00%, False: 60.00%]
+  if ((a == 0 && b == 2) || b == 34 || a == b)
+    printf("case1\n");
+
+  b = (a != 0 || a == 2) ? b : b+2;   // CHECK: Branch ([[@LINE]]:8): [True: 80.00%, False: 20.00%]
+                                      // CHECK: Branch ([[@LINE-1]]:18): [True: 0.00%, False: 100.00%]
+  b = (a != 0 && a == 1);             // CHECK: Branch ([[@LINE]]:8): [True: 80.00%, False: 20.00%]
+                                      // CHECK: Branch ([[@LINE-1]]:18): [True: 25.00%, False: 75.00%]
+  for (i = 0; i < b; i++) { a = 2 + b + b; }
+                                      // CHECK: Branch ([[@LINE-1]]:15): [True: 16.67%, False: 83.33%]
+
+  b = a;
+
+  switch (a)
+  {
+    case 0:                           // CHECK: Branch ([[@LINE]]:5): [True: 20.00%, False: 80.00%]
+      printf("case0\n");
+    case 2:                           // CHECK: Branch ([[@LINE]]:5): [True: 20.00%, False: 80.00%]
+      printf("case2\n");
+    case 3:                           // CHECK: Branch ([[@LINE]]:5): [True: 0.00%, False: 100.00%]
+      printf("case3\n");
+    default: break;                   // CHECK: Branch ([[@LINE]]:5): [True: 60.00%, False: 40.00%]
+  }
+
+  i = 0;
+  do {
+    printf("loop\n");
+  } while (i++ < 10);                 // CHECK: Branch ([[@LINE]]:12): [True: 90.91%, False: 9.09%]
+
+  __llvm_profile_write_file();
+
+  return b;
+}
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-templates.cpp b/llvm/test/tools/llvm-cov/Inputs/branch-templates.cpp
new file mode 100644
index 00000000000000..0795a5346380de
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-templates.cpp
@@ -0,0 +1,38 @@
+
+
+
+
+
+#include <stdio.h>
+template<typename T>
+void unused(T x) {
+  return;
+}
+
+template<typename T>
+int func(T x) {
+  if(x)       // CHECK: |  Branch ([[@LINE]]:6): [True: 0, False: 1]
+    return 0; // CHECK: |  Branch ([[@LINE-1]]:6): [True: 1, False: 0]
+  else        // CHECK: |  Branch ([[@LINE-2]]:6): [True: 0, False: 1]
+    return 1;
+  int j = 1;
+}
+
+              // CHECK-LABEL: _Z4funcIiEiT_:
+              // CHECK: |  |  Branch ([[@LINE-8]]:6): [True: 0, False: 1]
+              // CHECK-LABEL: _Z4funcIbEiT_:
+              // CHECK: |  |  Branch ([[@LINE-10]]:6): [True: 1, False: 0]
+              // CHECK-LABEL: _Z4funcIfEiT_:
+              // CHECK: |  |  Branch ([[@LINE-12]]:6): [True: 0, False: 1]
+
+extern "C" { extern void __llvm_profile_write_file(void); }
+int main() {
+  if (func<int>(0))      // CHECK: |  Branch ([[@LINE]]:7): [True: 1, False: 0]
+    printf("case1\n");
+  if (func<bool>(true))  // CHECK: |  Branch ([[@LINE]]:7): [True: 0, False: 1]
+    printf("case2\n");
+  if (func<float>(0.0))  // CHECK: |  Branch ([[@LINE]]:7): [True: 1, False: 0]
+    printf("case3\n");
+  __llvm_profile_write_file();
+  return 0;
+}
diff --git a/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp b/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp
new file mode 100644
index 00000000000000..c7e8c8fb0c75e4
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp
@@ -0,0 +1,29 @@
+// HTML-WHOLE-FILE: <td class='line-number'><a name='L[[@LINE+2]]' href='#L[[@LINE+2]]'><pre>[[@LINE+2]]</pre></a></td><td class='skipped-line'></td><td class='code'><pre>// before
+// HTML-FILTER-NOT: <td class='line-number'><a name='L[[@LINE+1]]' href='#L[[@LINE+1]]'><pre>[[@LINE+1]]</pre></a></td><td class='skipped-line'></td><td class='code'><pre>// before
+// before any coverage              // WHOLE-FILE: [[@LINE]]|      |// before
+                                    // FILTER-NOT: [[@LINE-1]]|    |// before
+// HTML: <td class='line-number'><a name='L[[@LINE+1]]' href='#L[[@LINE+1]]'><pre>[[@LINE+1]]</pre></a></td><td class='covered-line'><pre>161</pre></td><td class='code'><pre>int main() {
+int main() {                              // TEXT: [[@LINE]]|   161|int main(
+  int x = 0;                              // TEXT: [[@LINE]]|   161|  int x
+                                          // TEXT: [[@LINE]]|   161|
+  if (x) {                                // TEXT: [[@LINE]]|   161|  if (x)
+    x = 0;                                // TEXT: [[@LINE]]|     0|    x = 0
+  } else {                                // TEXT: [[@LINE]]|   161|  } else
+    x = 1;                                // TEXT: [[@LINE]]|   161|    x = 1
+  }                                       // TEXT: [[@LINE]]|   161|  }
+                                          // TEXT: [[@LINE]]|   161|
+  for (int i = 0; i < 100; ++i) {         // TEXT: [[@LINE]]| 16.2k|  for (
+    x = 1;                                // TEXT: [[@LINE]]| 16.1k|    x = 1
+  }                                       // TEXT: [[@LINE]]| 16.1k|  }
+                                          // TEXT: [[@LINE]]|   161|
+  x = x < 10 ? x + 1 : x - 1;             // TEXT: [[@LINE]]|   161|  x =
+  x = x > 10 ?                            // TEXT: [[@LINE]]|   161|  x =
+        x - 1:                            // TEXT: [[@LINE]]|     0|        x
+        x + 1;                            // TEXT: [[@LINE]]|   161|        x
+                                          // TEXT: [[@LINE]]|   161|
+  return 0;                               // TEXT: [[@LINE]]|   161|  return
+}                                         // TEXT: [[@LINE]]|   161|}
+// after coverage                   // WHOLE-FILE: [[@LINE]]|      |// after
+                                    // FILTER-NOT: [[@LINE-1]]|    |// after
+// HTML-WHOLE-FILE: <td class='line-number'><a name='L[[@LINE-2]]' href='#L[[@LINE-2]]'><pre>[[@LINE-2]]</pre></a></td><td class='skipped-line'></td><td class='code'><pre>// after
+// HTML-FILTER-NOT: <td class='line-number'><a name='L[[@LINE-3]]' href='#L[[@LINE-3]]'><pre>[[@LINE-3]]</pre></a></td><td class='skipped-line'></td><td class='code'><pre>// after
diff --git a/llvm/test/tools/llvm-cov/branch-c-general.test b/llvm/test/tools/llvm-cov/branch-c-general.test
index 2fa99dfe61532e..865a2662460e83 100644
--- a/llvm/test/tools/llvm-cov/branch-c-general.test
+++ b/llvm/test/tools/llvm-cov/branch-c-general.test
@@ -114,7 +114,7 @@
 
 
 
-//      REPORT: Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
+// REPORT:      Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
 // REPORT-NEXT: ---
 // REPORT-NEXT: simple_loops                      8       0 100.00%         9       0 100.00%         6       0 100.00%
 // REPORT-NEXT: conditionals                     24       0 100.00%        15       0 100.00%        16       2  87.50%
diff --git a/llvm/test/tools/llvm-cov/branch-logical-mixed.test b/llvm/test/tools/llvm-cov/branch-logical-mixed.test
new file mode 100644
index 00000000000000..a07d2357f2c34d
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/branch-logical-mixed.test
@@ -0,0 +1,11 @@
+// RUN: llvm-profdata merge %S/Inputs/branch-logical-mixed.proftext -o %t.profdata
+// RUN: llvm-cov show --show-branches=count %S/Inputs/branch-logical-mixed.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck %S/Inputs/branch-logical-mixed.cpp
+// RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-logical-mixed.o32l -instr-profile %t.profdata -show-functions -path-equivalence=/tmp,%S/Inputs %S/Inputs/branch-logical-mixed.cpp
+| FileCheck %s -check-prefix=REPORT
+
+// REPORT:      Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
+// REPORT-NEXT: ---
+// REPORT-NEXT: _Z4funcii                        77      15  80.52%        60       2  96.67%        80      30  62.50%
+// REPORT-NEXT: main                              1       0 100.00%         5       0 100.00%         0       0   0.00%
+// REPORT-NEXT: ---
+// REPORT-NEXT: TOTAL                            78      15  80.77%        65       2  96.92%        80      30  62.50%
diff --git a/llvm/test/tools/llvm-cov/branch-macros.test b/llvm/test/tools/llvm-cov/branch-macros.test
new file mode 100644
index 00000000000000..fbe7694b4f4e05
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/branch-macros.test
@@ -0,0 +1,11 @@
+// RUN: llvm-profdata merge %S/Inputs/branch-macros.proftext -o %t.profdata
+// RUN: llvm-cov show --show-expansions --show-branches=count %S/Inputs/branch-macros.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck %S/Inputs/branch-macros.cpp
+// RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-macros.o32l -instr-profile %t.profdata -show-functions -path-equivalence=/tmp,%S/Inputs %S/Inputs/branch-macros.cpp | FileCheck %s -check-prefix=REPORT
+
+// REPORT:      Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
+// REPORT-NEXT: ---
+// REPORT-NEXT: _Z4funcii                        28       4  85.71%        18       0 100.00%        30      14  53.33%
+// REPORT-NEXT: _Z5func2ii                       13       1  92.31%         8       0 100.00%        10       2  80.00%
+// REPORT-NEXT: main                              1       0 100.00%         6       0 100.00%         0       0   0.00%
+// REPORT-NEXT: ---
+// REPORT-NEXT: TOTAL                            42       5  88.10%        32       0 100.00%        40      16  60.00%
diff --git a/llvm/test/tools/llvm-cov/branch-noShowBranch.test b/llvm/test/tools/llvm-cov/branch-noShowBranch.test
index 25a98d59481aa1..cabeeb01bfe3e7 100644
--- a/llvm/test/tools/llvm-cov/branch-noShowBranch.test
+++ b/llvm/test/tools/llvm-cov/branch-noShowBranch.test
@@ -5,9 +5,9 @@
 
 // CHECK-NOT: | Branch
 
-// REPORT: Name                        Regions    Miss   Cover     Lines    Miss   Cover
+// REPORT:     Name                        Regions    Miss   Cover     Lines    Miss   Cover
 // REPORT-NOT: Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
-// REPORT: ---
+// REPORT:     ---
 // REPORT-NOT: simple_loops                      8       0 100.00%         9       0 100.00%         6       0 100.00%
 // REPORT-NOT: conditionals                     24       0 100.00%        15       0 100.00%        16       2  87.50%
 // REPORT-NOT: early_exits                      20       4  80.00%        25       2  92.00%        16       6  62.50%
@@ -20,6 +20,6 @@
 // REPORT-NOT: do_fallthrough                    9       0 100.00%        12       0 100.00%         6       0 100.00%
 // REPORT-NOT: main                              1       0 100.00%        16       0 100.00%         0       0   0.00%
 // REPORT-NOT: c-general.c:static_func           4       0 100.00%         4       0 100.00%         2       0 100.00%
-// REPORT: TOTAL                           197      24  87.82%       234       8  96.58%
-// REPORT-NOT: TOTAL                           197      24  87.82%       234       13  94.44%       174      38  78.16%
+// REPORT:     TOTAL                           197      24  87.82%       234       8  96.58%
+// REPORT-NOT: TOTAL                           197      24  87.82%       234      13  94.44%       174      38  78.16%
 
diff --git a/llvm/test/tools/llvm-cov/branch-showBranchPercentage.c b/llvm/test/tools/llvm-cov/branch-showBranchPercentage.test
similarity index 51%
rename from llvm/test/tools/llvm-cov/branch-showBranchPercentage.c
rename to llvm/test/tools/llvm-cov/branch-showBranchPercentage.test
index a649462116a08e..f6f9e3df742b4a 100644
--- a/llvm/test/tools/llvm-cov/branch-showBranchPercentage.c
+++ b/llvm/test/tools/llvm-cov/branch-showBranchPercentage.test
@@ -1,63 +1,10 @@
 // Test visualization of branch taken percentages
 
 // RUN: llvm-profdata merge %S/Inputs/branch-showBranchPercentage.proftext -o %t.profdata
-// RUN: llvm-cov show --show-branches=percent %S/Inputs/branch-showBranchPercentage.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S %s | FileCheck %s
+// RUN: llvm-cov show --show-branches=percent %S/Inputs/branch-showBranchPercentage.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck %S/Inputs/branch-showBranchPercentage.c
 
-#include <stdio.h>
-#include <stdlib.h>
-
-extern void __llvm_profile_write_file(void);
-
-int main(int argc, char *argv[])
-{
-  int i = 0;
-  if (argc < 3)                       // CHECK: Branch ([[@LINE]]:7): [True: 16.67%, False: 83.33%]
-  {
-    __llvm_profile_write_file();
-    return 0;
-  }
-
-  int a = atoi(argv[1]);
-  int b = atoi(argv[2]);
-
-                                      // CHECK: Branch ([[@LINE+4]]:8): [True: 20.00%, False: 80.00%]
-                                      // CHECK: Branch ([[@LINE+3]]:18): [True: 0.00%, False: 100.00%]
-                                      // CHECK: Branch ([[@LINE+2]]:29): [True: 0.00%, False: 100.00%]
-                                      // CHECK: Branch ([[@LINE+1]]:40): [True: 40.00%, False: 60.00%]
-  if ((a == 0 && b == 2) || b == 34 || a == b)
-    printf("case1\n");
-
-  b = (a != 0 || a == 2) ? b : b+2;   // CHECK: Branch ([[@LINE]]:8): [True: 80.00%, False: 20.00%]
-                                      // CHECK: Branch ([[@LINE-1]]:18): [True: 0.00%, False: 100.00%]
-  b = (a != 0 && a == 1);             // CHECK: Branch ([[@LINE]]:8): [True: 80.00%, False: 20.00%]
-                                      // CHECK: Branch ([[@LINE-1]]:18): [True: 25.00%, False: 75.00%]
-  for (i = 0; i < b; i++) { a = 2 + b + b; }
-                                      // CHECK: Branch ([[@LINE-1]]:15): [True: 16.67%, False: 83.33%]
-
-  b = a;
-
-  switch (a)
-  {
-    case 0:                           // CHECK: Branch ([[@LINE]]:5): [True: 20.00%, False: 80.00%]
-      printf("case0\n");
-    case 2:                           // CHECK: Branch ([[@LINE]]:5): [True: 20.00%, False: 80.00%]
-      printf("case2\n");
-    case 3:                           // CHECK: Branch ([[@LINE]]:5): [True: 0.00%, False: 100.00%]
-      printf("case3\n");
-    default: break;                   // CHECK: Branch ([[@LINE]]:5): [True: 60.00%, False: 40.00%]
-  }
-
-  i = 0;
-  do {
-    printf("loop\n");
-  } while (i++ < 10);                 // CHECK: Branch ([[@LINE]]:12): [True: 90.91%, False: 9.09%]
-
-  __llvm_profile_write_file();
-
-  return b;
-}
 // RUN: llvm-profdata merge %S/Inputs/branch-showBranchPercentage.proftext -o %t.profdata
-// RUN: llvm-cov show --show-branches=percent %S/Inputs/branch-showBranchPercentage.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S %s -format html -o %t.html.dir
+// RUN: llvm-cov show --show-branches=percent %S/Inputs/branch-showBranchPercentage.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs -format html -o %t.html.dir
 
 // Test html output.
 // RUN: FileCheck -check-prefix=HTML -input-file=%t.html.dir/coverage/tmp/branch-showBranchPercentage.c.html %s
diff --git a/llvm/test/tools/llvm-cov/branch-templates.cpp b/llvm/test/tools/llvm-cov/branch-templates.test
similarity index 54%
rename from llvm/test/tools/llvm-cov/branch-templates.cpp
rename to llvm/test/tools/llvm-cov/branch-templates.test
index 4797428f8835ae..74aef16050228a 100644
--- a/llvm/test/tools/llvm-cov/branch-templates.cpp
+++ b/llvm/test/tools/llvm-cov/branch-templates.test
@@ -1,43 +1,9 @@
 // RUN: llvm-profdata merge %S/Inputs/branch-templates.proftext -o %t.profdata
-// RUN: llvm-cov show --show-expansions --show-branches=count %S/Inputs/branch-templates.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S %s | FileCheck %s
-// RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-templates.o32l -instr-profile %t.profdata -show-functions -path-equivalence=/tmp,%S %s | FileCheck %s -check-prefix=REPORT
-// RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-templates.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S %s | FileCheck %s -check-prefix=REPORTFILE
+// RUN: llvm-cov show --show-expansions --show-branches=count %S/Inputs/branch-templates.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck %S/Inputs/branch-templates.cpp
+// RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-templates.o32l -instr-profile %t.profdata -show-functions -path-equivalence=/tmp,%S/Inputs %S/Inputs/branch-templates.cpp | FileCheck %s -check-prefix=REPORT
+// RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-templates.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck %s -check-prefix=REPORTFILE
 
-#include <stdio.h>
-template<typename T>
-void unused(T x) {
-  return;
-}
-
-template<typename T>
-int func(T x) {
-  if(x)       // CHECK: |  Branch ([[@LINE]]:6): [True: 0, False: 1]
-    return 0; // CHECK: |  Branch ([[@LINE-1]]:6): [True: 1, False: 0]
-  else        // CHECK: |  Branch ([[@LINE-2]]:6): [True: 0, False: 1]
-    return 1;
-  int j = 1;
-}
-
-              // CHECK-LABEL: _Z4funcIiEiT_:
-              // CHECK: |  |  Branch ([[@LINE-8]]:6): [True: 0, False: 1]
-              // CHECK-LABEL: _Z4funcIbEiT_:
-              // CHECK: |  |  Branch ([[@LINE-10]]:6): [True: 1, False: 0]
-              // CHECK-LABEL: _Z4funcIfEiT_:
-              // CHECK: |  |  Branch ([[@LINE-12]]:6): [True: 0, False: 1]
-
-extern "C" { extern void __llvm_profile_write_file(void); }
-int main() {
-  if (func<int>(0))      // CHECK: |  Branch ([[@LINE]]:7): [True: 1, False: 0]
-    printf("case1\n");
-  if (func<bool>(true))  // CHECK: |  Branch ([[@LINE]]:7): [True: 0, False: 1]
-    printf("case2\n");
-  if (func<float>(0.0))  // CHECK: |  Branch ([[@LINE]]:7): [True: 1, False: 0]
-    printf("case3\n");
-  __llvm_profile_write_file();
-  return 0;
-}
-
-// REPORT: Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
+// REPORT:      Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
 // REPORT-NEXT: ---
 // REPORT-NEXT: main                              7       1  85.71%        10       1  90.00%         6       3  50.00%
 // REPORT-NEXT: _Z4funcIiEiT_                     5       2  60.00%         7       3  57.14%         2       1  50.00%
@@ -54,8 +20,8 @@ int main() {
 // respectively).  This is returned by: FunctionCoverageSummary::get(const
 // InstantiationGroup &Group, ...)
 
-// REPORTFILE: Filename                      Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
+// REPORTFILE:      Filename                 Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
 // REPORTFILE-NEXT: ---
 // REPORTFILE-NEXT: branch-templates.cpp          12                 3    75.00%           2                 0   100.00%          17                 4    76.47%           8                 4    50.00%
 // REPORTFILE-NEXT: ---
-// REPORTFILE-NEXT: TOTAL                              12                 3    75.00%           2                 0   100.00%          17                 4    76.47%           8                 4    50.00%
+// REPORTFILE-NEXT: TOTAL                         12                 3    75.00%           2                 0   100.00%          17                 4    76.47%           8                 4    50.00%
diff --git a/llvm/test/tools/llvm-cov/showLineExecutionCounts.cpp b/llvm/test/tools/llvm-cov/showLineExecutionCounts.cpp
deleted file mode 100644
index f72a9978b8a734..00000000000000
--- a/llvm/test/tools/llvm-cov/showLineExecutionCounts.cpp
+++ /dev/null
@@ -1,73 +0,0 @@
-// Basic handling of line counts.
-// RUN: llvm-profdata merge %S/Inputs/lineExecutionCounts.proftext -o %t.profdata
-
-// before any coverage              // WHOLE-FILE: [[@LINE]]|      |// before
-                                    // FILTER-NOT: [[@LINE-1]]|    |// before
-int main() {                              // TEXT: [[@LINE]]|   161|int main(
-  int x = 0;                              // TEXT: [[@LINE]]|   161|  int x
-                                          // TEXT: [[@LINE]]|   161|
-  if (x) {                                // TEXT: [[@LINE]]|   161|  if (x)
-    x = 0;                                // TEXT: [[@LINE]]|     0|    x = 0
-  } else {                                // TEXT: [[@LINE]]|   161|  } else
-    x = 1;                                // TEXT: [[@LINE]]|   161|    x = 1
-  }                                       // TEXT: [[@LINE]]|   161|  }
-                                          // TEXT: [[@LINE]]|   161|
-  for (int i = 0; i < 100; ++i) {         // TEXT: [[@LINE]]| 16.2k|  for (
-    x = 1;                                // TEXT: [[@LINE]]| 16.1k|    x = 1
-  }                                       // TEXT: [[@LINE]]| 16.1k|  }
-                                          // TEXT: [[@LINE]]|   161|
-  x = x < 10 ? x + 1 : x - 1;             // TEXT: [[@LINE]]|   161|  x =
-  x = x > 10 ?                            // TEXT: [[@LINE]]|   161|  x =
-        x - 1:                            // TEXT: [[@LINE]]|     0|        x
-        x + 1;                            // TEXT: [[@LINE]]|   161|        x
-                                          // TEXT: [[@LINE]]|   161|
-  return 0;                               // TEXT: [[@LINE]]|   161|  return
-}                                         // TEXT: [[@LINE]]|   161|}
-// after coverage                   // WHOLE-FILE: [[@LINE]]|      |// after
-                                    // FILTER-NOT: [[@LINE-1]]|    |// after
-
-// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -instr-profile %t.profdata -path-equivalence=/tmp,%S %s | FileCheck -check-prefixes=TEXT,WHOLE-FILE %s
-// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -instr-profile %t.profdata -path-equivalence=/tmp,%S -name=main %s | FileCheck -check-prefixes=TEXT,FILTER %s
-
-// Test -output-dir.
-// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -o %t.dir -instr-profile %t.profdata -path-equivalence=/tmp,%S %s
-// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -output-dir %t.filtered.dir -instr-profile %t.profdata -path-equivalence=/tmp,%S -name=main %s
-// RUN: FileCheck -check-prefixes=TEXT,WHOLE-FILE -input-file %t.dir/coverage/tmp/showLineExecutionCounts.cpp.txt %s
-// RUN: FileCheck -check-prefixes=TEXT,FILTER -input-file %t.filtered.dir/coverage/tmp/showLineExecutionCounts.cpp.txt %s
-//
-// RUN: llvm-cov export %S/Inputs/lineExecutionCounts.covmapping -instr-profile %t.profdata 2>/dev/null -summary-only > %t.export-summary.json
-// RUN: not grep '"name":"main"' %t.export-summary.json
-//
-// Test html output.
-// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -format html -o %t.html.dir -instr-profile %t.profdata -path-equivalence=/tmp,%S %s
-// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -format html -o %t.html.filtered.dir -instr-profile %t.profdata -path-equivalence=/tmp,%S -name=main %s
-// RUN: FileCheck -check-prefixes=HTML,HTML-WHOLE-FILE -input-file %t.html.dir/coverage/tmp/showLineExecutionCounts.cpp.html %s
-// RUN: FileCheck -check-prefixes=HTML,HTML-FILTER -input-file %t.html.filtered.dir/coverage/tmp/showLineExecutionCounts.cpp.html %s
-//
-// HTML-WHOLE-FILE: <td class='line-number'><a name='L4' href='#L4'><pre>4</pre></a></td><td class='skipped-line'></td><td class='code'><pre>// before
-// HTML-FILTER-NOT: <td class='line-number'><a name='L4' href='#L4'><pre>4</pre></a></td><td class='skipped-line'></td><td class='code'><pre>// before
-// HTML: <td class='line-number'><a name='L6' href='#L6'><pre>6</pre></a></td><td class='covered-line'><pre>161</pre></td><td class='code'><pre>int main() {
-// HTML-WHOLE-FILE: <td class='line-number'><a name='L26' href='#L26'><pre>26</pre></a></td><td class='skipped-line'></td><td class='code'><pre>// after
-// HTML-FILTER-NOT: <td class='line-number'><a name='L26' href='#L26'><pre>26</pre></a></td><td class='skipped-line'></td><td class='code'><pre>// after
-//
-// Test index creation.
-// RUN: FileCheck -check-prefix=TEXT-INDEX -input-file %t.dir/index.txt %s
-// TEXT-INDEX: Filename
-// TEXT-INDEX-NEXT: ---
-// TEXT-INDEX-NEXT: {{.*}}showLineExecutionCounts.cpp
-//
-// RUN: FileCheck -check-prefix HTML-INDEX -input-file %t.html.dir/index.html %s
-// HTML-INDEX-LABEL: <table>
-// HTML-INDEX: <td class='column-entry-bold'>Filename</td>
-// HTML-INDEX: <td class='column-entry-bold'>Function Coverage</td>
-// HTML-INDEX: <td class='column-entry-bold'>Line Coverage</td>
-// HTML-INDEX: <td class='column-entry-bold'>Region Coverage</td>
-// HTML-INDEX: <a href='coverage{{.*}}showLineExecutionCounts.cpp.html'{{.*}}showLineExecutionCounts.cpp</a>
-// HTML-INDEX: <td class='column-entry-green'>
-// HTML-INDEX: 100.00% (1/1)
-// HTML-INDEX: <td class='column-entry-yellow'>
-// HTML-INDEX: 90.00% (18/20)
-// HTML-INDEX: <td class='column-entry-red'>
-// HTML-INDEX: 72.73% (8/11)
-// HTML-INDEX: <tr class='light-row-bold'>
-// HTML-INDEX: Totals
diff --git a/llvm/test/tools/llvm-cov/showLineExecutionCounts.test b/llvm/test/tools/llvm-cov/showLineExecutionCounts.test
new file mode 100644
index 00000000000000..997b16a0b8e94f
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/showLineExecutionCounts.test
@@ -0,0 +1,43 @@
+// Basic handling of line counts.
+// RUN: rm -rf %t*.dir
+// RUN: llvm-profdata merge %S/Inputs/lineExecutionCounts.proftext -o %t.profdata
+
+// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck -check-prefixes=TEXT,WHOLE-FILE %S/Inputs/showLineExecutionCounts.cpp
+// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs -name=main | FileCheck -check-prefixes=TEXT,FILTER %S/Inputs/showLineExecutionCounts.cpp
+
+// Test -output-dir.
+// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -o %t.dir -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs
+// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -output-dir %t.filtered.dir -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs -name=main
+// RUN: FileCheck -check-prefixes=TEXT,WHOLE-FILE -input-file %t.dir/coverage/tmp/showLineExecutionCounts.cpp.txt %S/Inputs/showLineExecutionCounts.cpp
+// RUN: FileCheck -check-prefixes=TEXT,FILTER -input-file %t.filtered.dir/coverage/tmp/showLineExecutionCounts.cpp.txt %S/Inputs/showLineExecutionCounts.cpp
+//
+// RUN: llvm-cov export %S/Inputs/lineExecutionCounts.covmapping -instr-profile %t.profdata 2>/dev/null -summary-only > %t.export-summary.json
+// RUN: not grep '"name":"main"' %t.export-summary.json
+//
+// Test html output.
+// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -format html -o %t.html.dir -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs
+// RUN: llvm-cov show %S/Inputs/lineExecutionCounts.covmapping -format html -o %t.html.filtered.dir -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs -name=main
+// RUN: FileCheck -check-prefixes=HTML,HTML-WHOLE-FILE -input-file %t.html.dir/coverage/tmp/showLineExecutionCounts.cpp.html %S/Inputs/showLineExecutionCounts.cpp
+// RUN: FileCheck -check-prefixes=HTML,HTML-FILTER -input-file %t.html.filtered.dir/coverage/tmp/showLineExecutionCounts.cpp.html %S/Inputs/showLineExecutionCounts.cpp
+//
+// Test index creation.
+// RUN: FileCheck -check-prefix=TEXT-INDEX -input-file %t.dir/index.txt %s
+// TEXT-INDEX: Filename
+// TEXT-INDEX-NEXT: ---
+// TEXT-INDEX-NEXT: {{.*}}showLineExecutionCounts.cpp
+//
+// RUN: FileCheck -check-prefix HTML-INDEX -input-file %t.html.dir/index.html %s
+// HTML-INDEX-LABEL: <table>
+// HTML-INDEX: <td class='column-entry-bold'>Filename</td>
+// HTML-INDEX: <td class='column-entry-bold'>Function Coverage</td>
+// HTML-INDEX: <td class='column-entry-bold'>Line Coverage</td>
+// HTML-INDEX: <td class='column-entry-bold'>Region Coverage</td>
+// HTML-INDEX: <a href='coverage{{.*}}showLineExecutionCounts.cpp.html'{{.*}}showLineExecutionCounts.cpp</a>
+// HTML-INDEX: <td class='column-entry-green'>
+// HTML-INDEX: 100.00% (1/1)
+// HTML-INDEX: <td class='column-entry-yellow'>
+// HTML-INDEX: 90.00% (18/20)
+// HTML-INDEX: <td class='column-entry-red'>
+// HTML-INDEX: 72.73% (8/11)
+// HTML-INDEX: <tr class='light-row-bold'>
+// HTML-INDEX: Totals

>From c50c492964a9239fc9e07ffe4a56bdbd4bf17aa8 Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic at gmail.com>
Date: Wed, 20 Nov 2024 23:34:04 +0900
Subject: [PATCH 6/9] Introduce test/llvm-cov/Inputs/yaml.makefile for
 convenience.

---
 llvm/test/tools/llvm-cov/Inputs/yaml.makefile | 96 +++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/yaml.makefile

diff --git a/llvm/test/tools/llvm-cov/Inputs/yaml.makefile b/llvm/test/tools/llvm-cov/Inputs/yaml.makefile
new file mode 100644
index 00000000000000..2a256f0cffc0b9
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/yaml.makefile
@@ -0,0 +1,96 @@
+# This is for developers' convenience and not expected to be in build steps.
+#
+# Usage:
+#   cd /path/to/llvm-project/llvm/test/tools/llvm-cov/Inputs
+#   PATH=/path/to/build/bin:$PATH make -f yaml.makefile
+
+CFLAGS_COVMAP	= -fcoverage-compilation-dir=. \
+		  -mllvm -runtime-counter-relocation=true \
+		  -mllvm -conditional-counter-update=true \
+		  -mllvm -enable-name-compression=false \
+		  -fprofile-instr-generate -fcoverage-mapping \
+		  $(if $(filter mcdc-%, $*), $(CFLAGS_MCDC))
+
+CFLAGS_MCDC	= -fcoverage-mcdc
+
+%.o: %.cpp
+	clang++ $< -c -o $@ $(CFLAGS_COVMAP)
+
+%.o: %.c
+	clang $< -c -o $@ $(CFLAGS_COVMAP)
+
+%-single.o: %.cpp
+	clang++ $< -c -o $@ \
+		-mllvm -enable-single-byte-coverage=true \
+		$(CFLAGS_COVMAP)
+
+%-single.o: %.c
+	clang $< -c -o $@ \
+		-mllvm -enable-single-byte-coverage=true \
+		$(CFLAGS_COVMAP)
+
+%.covmap.o: %.o
+	llvm-objcopy \
+		--only-section=__llvm_covfun \
+		--only-section=__llvm_covmap \
+		--only-section=__llvm_prf_names \
+		--strip-unneeded \
+		$< $@
+
+%.yaml: %.covmap.o
+	obj2yaml $< > $@
+
+%.exe: %.o
+	clang++ -fprofile-instr-generate $^ -o $@
+
+ARGS_branch-logical-mixed := \
+	0 0; \
+	0 1; \
+	1 0; \
+	1 1
+
+ARGS_branch-macros := \
+	0 1; \
+	1 0; \
+	1 1
+
+ARGS_branch-showBranchPercentage := \
+	0 1; \
+	1 1; \
+	2 2; \
+	4 0; \
+	5 0; \
+	1
+
+ARGS_showLineExecutionCounts := $(patsubst %,%;,$(shell seq 161))
+
+ARGS_mcdc-const-folding := \
+	0 1; \
+	1 0; \
+	1 1; \
+	1 1
+
+%.profdata: %.exe
+	-find -name '$*.*.profraw' | xargs rm -fv
+	@if [ "$(ARGS_$(patsubst %-single,%,$*))" = "" ]; then \
+	  echo "Executing: $<"; \
+	  LLVM_PROFILE_FILE=$*.%p%c.profraw ./$<; \
+	else \
+	  LLVM_PROFILE_FILE=$*.%p%c.profraw; \
+	  export LLVM_PROFILE_FILE; \
+	  for xcmd in $(shell echo "$(ARGS_$(patsubst %-single,%,$*))" | tr ';[:blank:]' ' %'); do \
+	    cmd=$$(echo "$$xcmd" | tr '%' ' '); \
+	    echo "Executing series: $< $$cmd"; \
+	    eval "./$< $$cmd"; \
+	  done; \
+	fi
+	find -name '$*.*.profraw' | xargs llvm-profdata merge --sparse -o $@
+
+%.proftext: %.profdata
+	llvm-profdata merge --text -o $@ $<
+
+.PHONY: all
+all:	\
+	$(patsubst %.yaml,%.proftext, $(wildcard *.yaml)) \
+	$(wildcard *.yaml)
+	-find -name '*.profraw' | xargs rm -f

>From d7c5b4404c48a6b02ddffc331849335580e16b9b Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic at gmail.com>
Date: Wed, 20 Nov 2024 23:34:16 +0900
Subject: [PATCH 7/9] Add tests for SingleByteCoverage

---
 .../Inputs/branch-c-general-single.proftext   | 297 ++++++++++++++++++
 .../Inputs/branch-c-general-single.yaml       | 177 +++++++++++
 .../tools/llvm-cov/Inputs/branch-c-general.c  | 202 ++++++------
 .../branch-logical-mixed-single.proftext      |  84 +++++
 .../Inputs/branch-logical-mixed-single.yaml   |  57 ++++
 .../llvm-cov/Inputs/branch-logical-mixed.cpp  |  86 ++---
 .../Inputs/branch-macros-single.proftext      |  53 ++++
 .../llvm-cov/Inputs/branch-macros-single.yaml |  69 ++++
 .../tools/llvm-cov/Inputs/branch-macros.cpp   |  46 +--
 .../Inputs/branch-showBranchPercentage.c      |   6 +-
 .../Inputs/branch-templates-single.proftext   |  49 +++
 .../Inputs/branch-templates-single.yaml       |  81 +++++
 .../llvm-cov/Inputs/branch-templates.cpp      |  22 +-
 .../showLineExecutionCounts-single.proftext   |  23 ++
 .../showLineExecutionCounts-single.yaml       |  45 +++
 .../Inputs/showLineExecutionCounts.cpp        |  40 +--
 .../test/tools/llvm-cov/branch-c-general.test |   4 +
 .../tools/llvm-cov/branch-logical-mixed.test  |   8 +-
 llvm/test/tools/llvm-cov/branch-macros.test   |   6 +-
 .../test/tools/llvm-cov/branch-templates.test |   4 +
 .../llvm-cov/showLineExecutionCounts.test     |   7 +
 21 files changed, 1163 insertions(+), 203 deletions(-)
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.proftext
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.yaml
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed-single.proftext
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed-single.yaml
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/branch-macros-single.proftext
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/branch-macros-single.yaml
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/branch-templates-single.proftext
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/branch-templates-single.yaml
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts-single.proftext
 create mode 100644 llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts-single.yaml

diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.proftext b/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.proftext
new file mode 100644
index 00000000000000..ea8c6f9bc634ed
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.proftext
@@ -0,0 +1,297 @@
+# Instrument block coverage
+:single_byte_coverage
+big_switch
+# Func Hash:
+13144136522122330070
+# Num Counters:
+27
+# Counter Values:
+1
+1
+1
+1
+1
+1
+1
+0
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+
+boolean_operators
+# Func Hash:
+1245693242827665
+# Num Counters:
+17
+# Counter Values:
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+
+boolop_loops
+# Func Hash:
+12402604614320574815
+# Num Counters:
+23
+# Counter Values:
+1
+0
+1
+1
+1
+1
+0
+1
+1
+1
+1
+0
+1
+1
+1
+1
+1
+0
+1
+1
+1
+1
+1
+
+branch-c-general.c:static_func
+# Func Hash:
+18129
+# Num Counters:
+5
+# Counter Values:
+1
+1
+1
+1
+1
+
+conditional_operator
+# Func Hash:
+54992
+# Num Counters:
+5
+# Counter Values:
+1
+1
+0
+1
+1
+
+conditionals
+# Func Hash:
+4904767535850050386
+# Num Counters:
+25
+# Counter Values:
+1
+1
+1
+1
+1
+1
+0
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+1
+1
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+1
+1
+1
+1
+1
+1
+1
+
+do_fallthrough
+# Func Hash:
+8714614136504380050
+# Num Counters:
+10
+# Counter Values:
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+
+early_exits
+# Func Hash:
+2880354649761471549
+# Num Counters:
+20
+# Counter Values:
+1
+0
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+0
+1
+1
+1
+0
+0
+
+jumps
+# Func Hash:
+15051420506203462683
+# Num Counters:
+38
+# Counter Values:
+1
+1
+0
+1
+0
+0
+0
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+0
+1
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+1
+1
+1
+1
+1
+0
+0
+1
+1
+1
+
+main
+# Func Hash:
+24
+# Num Counters:
+1
+# Counter Values:
+1
+
+simple_loops
+# Func Hash:
+1245818015463121
+# Num Counters:
+11
+# Counter Values:
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+
+switches
+# Func Hash:
+43242458792028222
+# Num Counters:
+29
+# Counter Values:
+1
+1
+1
+1
+1
+1
+0
+1
+1
+0
+1
+1
+1
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+1
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+1
+1
+1
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+0
+1
+1
+1
+1
+1
+1
+0
+0
+
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.yaml b/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.yaml
new file mode 100644
index 00000000000000..9d23dcb67ad2ac
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.yaml
@@ -0,0 +1,177 @@
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  OSABI:           ELFOSABI_GNU
+  Type:            ET_REL
+  Machine:         EM_X86_64
+  SectionHeaderStringTable: .strtab
+Sections:
+  - Name:            __llvm_covfun
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
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+      - Name:            '__llvm_covfun (3)'
+      - Name:            '__llvm_covfun (4)'
+      - Name:            '__llvm_covfun (5)'
+      - Name:            '__llvm_covfun (6)'
+      - Name:            '__llvm_covfun (7)'
+      - Name:            '__llvm_covfun (8)'
+      - Name:            '__llvm_covfun (9)'
+      - Name:            '__llvm_covfun (10)'
+      - Name:            '__llvm_covfun (11)'
+      - Name:            __llvm_covmap
+      - Name:            __llvm_prf_names
+      - Name:            .symtab
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+  - Name:            __llvm_covmap
+    Type:            STT_SECTION
+    Section:         __llvm_covmap
+  - Name:            __llvm_prf_names
+    Type:            STT_SECTION
+    Section:         __llvm_prf_names
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+  - Name:            __covrec_DB956436E78DD5FAu
+    Type:            STT_OBJECT
+    Section:         '__llvm_covfun (10)'
+    Binding:         STB_WEAK
+    Size:            0x26
+    Other:           [ STV_HIDDEN ]
+  - Name:            __covrec_F9EB37679DF4B44Cu
+    Type:            STT_OBJECT
+    Section:         '__llvm_covfun (11)'
+    Binding:         STB_WEAK
+    Size:            0x3E
+    Other:           [ STV_HIDDEN ]
+...
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-c-general.c b/llvm/test/tools/llvm-cov/Inputs/branch-c-general.c
index 2e7e773e5c3941..5ea9ecb42b0ed1 100644
--- a/llvm/test/tools/llvm-cov/Inputs/branch-c-general.c
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-c-general.c
@@ -4,75 +4,75 @@
 
 
 
-void simple_loops() {
+void simple_loops() {           // CHECK: @LINE|{{.*}}simple_loops()
   int i;
-  for (i = 0; i < 100; ++i) {
+  for (i = 0; i < 100; ++i) {   // BRCOV: Branch ([[@LINE]]:15): [True: [[C100:100|1]], False: 1]
   }
-  while (i > 0)
+  while (i > 0)                 // BRCOV: Branch ([[@LINE]]:10): [True: [[C100]], False: 1]
     i--;
-  do {} while (i++ < 75);
+  do {} while (i++ < 75);       // BRCOV: Branch ([[@LINE]]:16): [True: [[C75:75|1]], False: 1]
 
 }
 
-void conditionals() {
-  for (int i = 0; i < 100; ++i) {
-    if (i % 2) {
-      if (i) {}
-    } else if (i % 3) {
-      if (i) {}
+void conditionals() {           // CHECK: @LINE|{{.*}}conditionals()
+  for (int i = 0; i < 100; ++i) {//BRCOV: Branch ([[@LINE]]:19): [True: [[C100]], False: 1]
+    if (i % 2) {                // BRCOV: Branch ([[@LINE]]:9): [True: [[C50:50|1]], False: [[C50]]]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C50]], False: 0]
+    } else if (i % 3) {         // BRCOV: Branch ([[@LINE]]:16): [True: [[C33:33|1]], False: [[C17:17|1]]]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C33]], False: 0]
     } else {
-      if (i) {}
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C16:16|1]], False: 1]
     }
-
-    if (1 && i) {}
-    if (0 || i) {}
-  }
+                                // BRCOV: Branch ([[@LINE+1]]:9): [True: [[C100]], Folded]
+    if (1 && i) {}              // BRCOV: Branch ([[@LINE]]:14): [True: [[C99:99|1]], False: 1]
+    if (0 || i) {}              // BRCOV: Branch ([[@LINE]]:9): [Folded, False: [[C100]]]
+  }                             // BRCOV: Branch ([[@LINE-1]]:14): [True: [[C99]], False: 1]
 
 }
 
-void early_exits() {
+void early_exits() {            // CHECK: @LINE|{{.*}}early_exits()
   int i = 0;
 
-  if (i) {}
+  if (i) {}                     // BRCOV: Branch ([[@LINE]]:7): [True: 0, False: 1]
 
-  while (i < 100) {
+  while (i < 100) {             // BRCOV: Branch ([[@LINE]]:10): [True: [[C51:51|1]], False: 0]
     i++;
-    if (i > 50)
+    if (i > 50)                 // BRCOV: Branch ([[@LINE]]:9): [True: 1, False: [[C50]]]
       break;
-    if (i % 2)
+    if (i % 2)                  // BRCOV: Branch ([[@LINE]]:9): [True: [[C25:25|1]], False: [[C25]]]
       continue;
   }
 
-  if (i) {}
+  if (i) {}                     // BRCOV: Branch ([[@LINE]]:7): [True: 1, False: 0]
 
   do {
-    if (i > 75)
+    if (i > 75)                 // BRCOV: Branch ([[@LINE]]:9): [True: 1, False: [[C25]]]
       return;
     else
       i++;
-  } while (i < 100);
+  } while (i < 100);            // BRCOV: Branch ([[@LINE]]:12): [True: [[C25]], False: 0]
 
-  if (i) {}
+  if (i) {}                     // BRCOV: Branch ([[@LINE]]:7): [True: 0, False: 0]
 
 }
 
-void jumps() {
+void jumps() {                  // CHECK: @LINE|{{.*}}jumps()
   int i;
 
-  for (i = 0; i < 2; ++i) {
+  for (i = 0; i < 2; ++i) {     // BRCOV: Branch ([[@LINE]]:15): [True: 1, False: 0]
     goto outofloop;
     // Never reached -> no weights
-    if (i) {}
+    if (i) {}                   // BRCOV: Branch ([[@LINE]]:9): [True: 0, False: 0]
   }
 
 outofloop:
-  if (i) {}
+  if (i) {}                     // BRCOV: Branch ([[@LINE]]:7): [True: 0, False: 1]
 
   goto loop1;
 
-  while (i) {
+  while (i) {                   // BRCOV: Branch ([[@LINE]]:10): [True: 0, False: 1]
   loop1:
-    if (i) {}
+    if (i) {}                   // BRCOV: Branch ([[@LINE]]:9): [True: 0, False: 1]
   }
 
   goto loop2;
@@ -80,143 +80,143 @@ void jumps() {
 second:
 third:
   i++;
-  if (i < 3)
+  if (i < 3)                    // BRCOV: Branch ([[@LINE]]:7): [True: [[C2:2|1]], False: 1]
     goto loop2;
 
-  while (i < 3) {
+  while (i < 3) {               // BRCOV: Branch ([[@LINE]]:10): [True: 0, False: 1]
   loop2:
     switch (i) {
-    case 0:
+    case 0:                     // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
       goto first;
-    case 1:
+    case 1:                     // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
       goto second;
-    case 2:
+    case 2:                     // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
       goto third;
     }
   }
 
-  for (i = 0; i < 10; ++i) {
+  for (i = 0; i < 10; ++i) {    // BRCOV: Branch ([[@LINE]]:15): [True: [[C10:10|1]], False: 1]
     goto withinloop;
-    // never reached -> no weights
-    if (i) {}
+                                // never reached -> no weights
+    if (i) {}                   // BRCOV: Branch ([[@LINE]]:9): [True: 0, False: 0]
   withinloop:
-    if (i) {}
+    if (i) {}                   // BRCOV: Branch ([[@LINE]]:9): [True: [[C9:9|1]], False: 1]
   }
 
 }
 
-void switches() {
+void switches() {               // CHECK: @LINE|{{.*}}switches()
   static int weights[] = {1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5};
 
   // No cases -> no weights
   switch (weights[0]) {
-  default:
+  default:                      // BRCOV: Branch ([[@LINE]]:3): [True: 1, Folded]
     break;
   }
-
+                                // BRCOV: Branch ([[@LINE+1]]:63): [True: [[C15:15|1]], False: 0]
   for (int i = 0, len = sizeof(weights) / sizeof(weights[0]); i < len; ++i) {
     switch (i[weights]) {
-    case 1:
-      if (i) {}
+    case 1:                     // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: 0, False: 1]
       // fallthrough
-    case 2:
-      if (i) {}
+    case 2:                     // BRCOV: Branch ([[@LINE]]:5): [True: [[C2]], Folded]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C2]], False: 1]
       break;
-    case 3:
-      if (i) {}
+    case 3:                     // BRCOV: Branch ([[@LINE]]:5): [True: [[C3:3|1]], Folded]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C3]], False: 0]
       continue;
-    case 4:
-      if (i) {}
+    case 4:                     // BRCOV: Branch ([[@LINE]]:5): [True: [[C4:4|1]], Folded]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C4]], False: 0]
       switch (i) {
-      case 6 ... 9:
-        if (i) {}
+      case 6 ... 9:             // BRCOV: Branch ([[@LINE]]:7): [True: [[C4]], Folded]
+        if (i) {}               // BRCOV: Branch ([[@LINE]]:13): [True: [[C4]], False: 0]
         continue;
       }
 
-    default:
-      if (i == len - 1)
+    default:                    // BRCOV: Branch ([[@LINE]]:5): [True: [[C5:5|1]], Folded]
+      if (i == len - 1)         // BRCOV: Branch ([[@LINE]]:11): [True: 1, False: [[C4]]]
         return;
     }
   }
 
   // Never reached -> no weights
-  if (weights[0]) {}
+  if (weights[0]) {}            // BRCOV: Branch ([[@LINE]]:7): [True: 0, False: 0]
 
 }
 
-void big_switch() {
-  for (int i = 0; i < 32; ++i) {
+void big_switch() {             // CHECK: @LINE|{{.*}}big_switch()
+  for (int i = 0; i < 32; ++i) {// BRCOV: Branch ([[@LINE]]:19): [True: [[C32:32|1]], False: 1]
     switch (1 << i) {
-    case (1 << 0):
-      if (i) {}
+    case (1 << 0):              // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: 0, False: 1]
       // fallthrough
-    case (1 << 1):
-      if (i) {}
+    case (1 << 1):              // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: 1, False: 1]
       break;
-    case (1 << 2) ... (1 << 12):
-      if (i) {}
+    case (1 << 2) ... (1 << 12):// BRCOV: Branch ([[@LINE]]:5): [True: [[C11:11|1]], Folded]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C11]], False: 0]
       break;
       // The branch for the large case range above appears after the case body.
 
-    case (1 << 13):
-      if (i) {}
+    case (1 << 13):             // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: 1, False: 0]
       break;
-    case (1 << 14) ... (1 << 28):
-      if (i) {}
+    case (1 << 14) ... (1 << 28)://BRCOV: Branch ([[@LINE]]:5): [True: [[C15]], Folded]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C15]], False: 0]
       break;
     // The branch for the large case range above appears after the case body.
 
     case (1 << 29) ... ((1 << 29) + 1):
-      if (i) {}
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: 1, False: 0]
       break;
-    default:
-      if (i) {}
+    default:                    // BRCOV: Branch ([[@LINE]]:5): [True: [[C2]], Folded]
+      if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C2]], False: 0]
       break;
     }
   }
 
 }
 
-void boolean_operators() {
+void boolean_operators() {      // CHECK: @LINE|{{.*}}boolean_operators()
   int v;
   for (int i = 0; i < 100; ++i) {
-    v = i % 3 || i;
-
-    v = i % 3 && i;
-
-    v = i % 3 || i % 2 || i;
-
-    v = i % 2 && i % 3 && i;
-  }
-
-}
-
-void boolop_loops() {
+    v = i % 3 || i;             // BRCOV: Branch ([[@LINE]]:9): [True: [[C66:66|1]], False: [[C34:34|1]]]
+                                // BRCOV: Branch ([[@LINE-1]]:18): [True: [[C33]], False: 1]
+    v = i % 3 && i;             // BRCOV: Branch ([[@LINE]]:9): [True: [[C66]], False: [[C34]]]
+                                // BRCOV: Branch ([[@LINE-1]]:18): [True: [[C66]], False: 0]
+    v = i % 3 || i % 2 || i;    // BRCOV: Branch ([[@LINE]]:9): [True: [[C66]], False: [[C34]]]
+                                // BRCOV: Branch ([[@LINE-1]]:18): [True: [[C17]], False: [[C17]]]
+    v = i % 2 && i % 3 && i;    // BRCOV: Branch ([[@LINE-2]]:27): [True: [[C16]], False: 1]
+  }                             // BRCOV: Branch ([[@LINE-1]]:9): [True: [[C50]], False: [[C50]]]
+                                // BRCOV: Branch ([[@LINE-2]]:18): [True: [[C33]], False: [[C17]]]
+}                               // BRCOV: Branch ([[@LINE-3]]:27): [True: [[C33]], False: 0]
+
+void boolop_loops() {           // CHECK: @LINE|{{.*}}boolop_loops()
   int i = 100;
 
-  while (i && i > 50)
-    i--;
-
-  while ((i % 2) || (i > 0))
-    i--;
-
-  for (i = 100; i && i > 50; --i);
+  while (i && i > 50)           // BRCOV: Branch ([[@LINE]]:10): [True: [[C51]], False: 0]
+    i--;                        // BRCOV: Branch ([[@LINE-1]]:15): [True: [[C50]], False: 1]
 
-  for (; (i % 2) || (i > 0); --i);
+  while ((i % 2) || (i > 0))    // BRCOV: Branch ([[@LINE]]:10): [True: [[C25]], False: [[C26:26|1]]]
+    i--;                        // BRCOV: Branch ([[@LINE-1]]:21): [True: [[C25]], False: 1]
 
+  for (i = 100; i && i > 50; --i);  // BRCOV: Branch ([[@LINE]]:17): [True: [[C51]], False: 0]
+                                    // BRCOV: Branch ([[@LINE-1]]:22): [True: [[C50]], False: 1]
+  for (; (i % 2) || (i > 0); --i);  // BRCOV: Branch ([[@LINE]]:10): [True: [[C25]], False: [[C26]]]
+                                    // BRCOV: Branch ([[@LINE-1]]:21): [True: [[C25]], False: 1]
 }
 
-void conditional_operator() {
+void conditional_operator() {   // CHECK: @LINE|{{.*}}conditional_operator()
   int i = 100;
 
-  int j = i < 50 ? i : 1;
+  int j = i < 50 ? i : 1;       // BRCOV: Branch ([[@LINE]]:11): [True: 0, False: 1]
 
-  int k = i ?: 0;
+  int k = i ?: 0;               // BRCOV: Branch ([[@LINE]]:11): [True: 1, False: 0]
 
 }
 
-void do_fallthrough() {
-  for (int i = 0; i < 10; ++i) {
+void do_fallthrough() {         // CHECK: @LINE|{{.*}}do_fallthrough()
+  for (int i = 0; i < 10; ++i) {// BRCOV: Branch ([[@LINE]]:19): [True: [[C10]], False: 1]
     int j = 0;
     do {
       // The number of exits out of this do-loop via the break statement
@@ -224,12 +224,12 @@ void do_fallthrough() {
       // fallthrough count). Make sure that does not violate any assertions.
       if (i < 8) break;
       j++;
-    } while (j < 2);
+    } while (j < 2);            // BRCOV: Branch ([[@LINE]]:14): [True: [[C2]], False: [[C2]]]
   }
 }
 
-static void static_func() {
-  for (int i = 0; i < 10; ++i) {
+static void static_func() {     // CHECK: @LINE|{{.*}}static_func()
+  for (int i = 0; i < 10; ++i) {// BRCOV: Branch ([[@LINE]]:19): [True: [[C10]], False: 1]
   }
 }
 
@@ -254,7 +254,7 @@ int main(int argc, const char *argv[]) {
   conditional_operator();
   do_fallthrough();
   static_func();
-  extern void __llvm_profile_write_file();
-  __llvm_profile_write_file();
+  (void)0;
+  (void)0;
   return 0;
 }
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed-single.proftext b/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed-single.proftext
new file mode 100644
index 00000000000000..f9662438de0e64
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed-single.proftext
@@ -0,0 +1,84 @@
+# Instrument block coverage
+:single_byte_coverage
+_Z4funcii
+# Func Hash:
+8468630735863722633
+# Num Counters:
+67
+# Counter Values:
+4
+0
+0
+0
+0
+2
+0
+2
+2
+3
+2
+0
+0
+0
+0
+0
+0
+1
+0
+1
+1
+3
+3
+3
+3
+3
+3
+1
+2
+0
+3
+0
+0
+0
+1
+0
+1
+0
+3
+3
+3
+3
+4
+1
+0
+2
+1
+0
+0
+3
+0
+2
+0
+2
+0
+0
+4
+4
+4
+0
+4
+1
+3
+4
+3
+1
+4
+
+main
+# Func Hash:
+24
+# Num Counters:
+1
+# Counter Values:
+4
+
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed-single.yaml b/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed-single.yaml
new file mode 100644
index 00000000000000..56f3d4955f4d93
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed-single.yaml
@@ -0,0 +1,57 @@
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  OSABI:           ELFOSABI_GNU
+  Type:            ET_REL
+  Machine:         EM_X86_64
+  SectionHeaderStringTable: .strtab
+Sections:
+  - Name:            __llvm_covfun
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content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
+  - Name:            '__llvm_covfun (1)'
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         FAD58DE7366495DB0900000018000000000000008F2950E06FBD46E801010001014F010402
+  - Name:            __llvm_covmap
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         000000001D0000000000000006000000021A0000186272616E63682D6C6F676963616C2D6D697865642E637070000000
+  - Name:            __llvm_prf_names
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_GNU_RETAIN ]
+    AddressAlign:    0x1
+    Content:         0E005F5A3466756E636969016D61696E
+  - Type:            SectionHeaderTable
+    Sections:
+      - Name:            .strtab
+      - Name:            __llvm_covfun
+      - Name:            '__llvm_covfun (1)'
+      - Name:            __llvm_covmap
+      - Name:            __llvm_prf_names
+      - Name:            .symtab
+Symbols:
+  - Name:            __llvm_covmap
+    Type:            STT_SECTION
+    Section:         __llvm_covmap
+  - Name:            __llvm_prf_names
+    Type:            STT_SECTION
+    Section:         __llvm_prf_names
+  - Name:            __covrec_B30B5C302CEDA0F0u
+    Type:            STT_OBJECT
+    Section:         __llvm_covfun
+    Binding:         STB_WEAK
+    Size:            0x249
+    Other:           [ STV_HIDDEN ]
+  - Name:            __covrec_DB956436E78DD5FAu
+    Type:            STT_OBJECT
+    Section:         '__llvm_covfun (1)'
+    Binding:         STB_WEAK
+    Size:            0x25
+    Other:           [ STV_HIDDEN ]
+...
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed.cpp b/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed.cpp
index 0a7d8d89671158..0eaf4c963ef9f4 100644
--- a/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed.cpp
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-logical-mixed.cpp
@@ -4,7 +4,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-
+// CHECK: |{{ +}}[[C4:4|1]]|void func(
 void func(int a, int b) {
   bool b0 = a <= b;
   bool b1 = a == b;
@@ -13,71 +13,71 @@ void func(int a, int b) {
   bool b4 = a > b;
   bool b5 = a != b;
 
-  bool c = b0 &&           // CHECK: Branch ([[@LINE]]:12): [True: 3, False: 1]
-           b1 &&           // CHECK: Branch ([[@LINE]]:12): [True: 2, False: 1]
-           b2 &&           // CHECK: Branch ([[@LINE]]:12): [True: 2, False: 0]
-           b3 &&           // CHECK: Branch ([[@LINE]]:12): [True: 0, False: 2]
-           b4 &&           // CHECK: Branch ([[@LINE]]:12): [True: 0, False: 0]
-           b5;             // CHECK: Branch ([[@LINE]]:12): [True: 0, False: 0]
+  bool c = b0 &&           // BRCOV: Branch ([[@LINE]]:12): [True: [[C3:3|1]], False: 1]
+           b1 &&           // BRCOV: Branch ([[@LINE]]:12): [True: [[C2:2|1]], False: 1]
+           b2 &&           // BRCOV: Branch ([[@LINE]]:12): [True: [[C2]], False: 0]
+           b3 &&           // BRCOV: Branch ([[@LINE]]:12): [True: 0, False: [[C2]]]
+           b4 &&           // BRCOV: Branch ([[@LINE]]:12): [True: 0, False: 0]
+           b5;             // BRCOV: Branch ([[@LINE]]:12): [True: 0, False: 0]
 
-  bool d = b0 ||           // CHECK: Branch ([[@LINE]]:12): [True: 3, False: 1]
-           b1 ||           // CHECK: Branch ([[@LINE]]:12): [True: 0, False: 1]
-           b2 ||           // CHECK: Branch ([[@LINE]]:12): [True: 1, False: 0]
-           b3 ||           // CHECK: Branch ([[@LINE]]:12): [True: 0, False: 0]
-           b4 ||           // CHECK: Branch ([[@LINE]]:12): [True: 0, False: 0]
-           b5;             // CHECK: Branch ([[@LINE]]:12): [True: 0, False: 0]
+  bool d = b0 ||           // BRCOV: Branch ([[@LINE]]:12): [True: [[C3]], False: 1]
+           b1 ||           // BRCOV: Branch ([[@LINE]]:12): [True: 0, False: 1]
+           b2 ||           // BRCOV: Branch ([[@LINE]]:12): [True: 1, False: 0]
+           b3 ||           // BRCOV: Branch ([[@LINE]]:12): [True: 0, False: 0]
+           b4 ||           // BRCOV: Branch ([[@LINE]]:12): [True: 0, False: 0]
+           b5;             // BRCOV: Branch ([[@LINE]]:12): [True: 0, False: 0]
 
-  bool e = (b0  &&         // CHECK: Branch ([[@LINE]]:13): [True: 3, False: 1]
-            b5) ||         // CHECK: Branch ([[@LINE]]:13): [True: 1, False: 2]
-           (b1  &&         // CHECK: Branch ([[@LINE]]:13): [True: 2, False: 1]
-            b4) ||         // CHECK: Branch ([[@LINE]]:13): [True: 0, False: 2]
-           (b2  &&         // CHECK: Branch ([[@LINE]]:13): [True: 3, False: 0]
-            b3) ||         // CHECK: Branch ([[@LINE]]:13): [True: 0, False: 3]
-           (b3  &&         // CHECK: Branch ([[@LINE]]:13): [True: 0, False: 3]
-            b2) ||         // CHECK: Branch ([[@LINE]]:13): [True: 0, False: 0]
-           (b4  &&         // CHECK: Branch ([[@LINE]]:13): [True: 1, False: 2]
-            b1) ||         // CHECK: Branch ([[@LINE]]:13): [True: 0, False: 1]
-           (b5  &&         // CHECK: Branch ([[@LINE]]:13): [True: 1, False: 2]
-            b0);           // CHECK: Branch ([[@LINE]]:13): [True: 0, False: 1]
+  bool e = (b0  &&         // BRCOV: Branch ([[@LINE]]:13): [True: [[C3]], False: 1]
+            b5) ||         // BRCOV: Branch ([[@LINE]]:13): [True: 1, False: [[C2]]]
+           (b1  &&         // BRCOV: Branch ([[@LINE]]:13): [True: [[C2]], False: 1]
+            b4) ||         // BRCOV: Branch ([[@LINE]]:13): [True: 0, False: [[C2]]]
+           (b2  &&         // BRCOV: Branch ([[@LINE]]:13): [True: [[C3]], False: 0]
+            b3) ||         // BRCOV: Branch ([[@LINE]]:13): [True: 0, False: [[C3]]]
+           (b3  &&         // BRCOV: Branch ([[@LINE]]:13): [True: 0, False: [[C3]]]
+            b2) ||         // BRCOV: Branch ([[@LINE]]:13): [True: 0, False: 0]
+           (b4  &&         // BRCOV: Branch ([[@LINE]]:13): [True: 1, False: [[C2]]]
+            b1) ||         // BRCOV: Branch ([[@LINE]]:13): [True: 0, False: 1]
+           (b5  &&         // BRCOV: Branch ([[@LINE]]:13): [True: 1, False: [[C2]]]
+            b0);           // BRCOV: Branch ([[@LINE]]:13): [True: 0, False: 1]
 
-  bool f = (b0  ||         // CHECK: Branch ([[@LINE]]:13): [True: 3, False: 1]
-            b5) &&         // CHECK: Branch ([[@LINE]]:13): [True: 1, False: 0]
-           (b1  ||         // CHECK: Branch ([[@LINE]]:13): [True: 2, False: 2]
-            b4) &&         // CHECK: Branch ([[@LINE]]:13): [True: 1, False: 1]
-           (b2  ||         // CHECK: Branch ([[@LINE]]:13): [True: 3, False: 0]
-            b3) &&         // CHECK: Branch ([[@LINE]]:13): [True: 0, False: 0]
-           (b3  ||         // CHECK: Branch ([[@LINE]]:13): [True: 0, False: 3]
-            b2) &&         // CHECK: Branch ([[@LINE]]:13): [True: 3, False: 0]
-           (b4  ||         // CHECK: Branch ([[@LINE]]:13): [True: 1, False: 2]
-            b1) &&         // CHECK: Branch ([[@LINE]]:13): [True: 2, False: 0]
-           (b5  ||         // CHECK: Branch ([[@LINE]]:13): [True: 1, False: 2]
-            b0);           // CHECK: Branch ([[@LINE]]:13): [True: 2, False: 0]
+  bool f = (b0  ||         // BRCOV: Branch ([[@LINE]]:13): [True: [[C3]], False: 1]
+            b5) &&         // BRCOV: Branch ([[@LINE]]:13): [True: 1, False: 0]
+           (b1  ||         // BRCOV: Branch ([[@LINE]]:13): [True: [[C2]], False: [[C2]]]
+            b4) &&         // BRCOV: Branch ([[@LINE]]:13): [True: 1, False: 1]
+           (b2  ||         // BRCOV: Branch ([[@LINE]]:13): [True: [[C3]], False: 0]
+            b3) &&         // BRCOV: Branch ([[@LINE]]:13): [True: 0, False: 0]
+           (b3  ||         // BRCOV: Branch ([[@LINE]]:13): [True: 0, False: [[C3]]]
+            b2) &&         // BRCOV: Branch ([[@LINE]]:13): [True: [[C3]], False: 0]
+           (b4  ||         // BRCOV: Branch ([[@LINE]]:13): [True: 1, False: [[C2]]]
+            b1) &&         // BRCOV: Branch ([[@LINE]]:13): [True: [[C2]], False: 0]
+           (b5  ||         // BRCOV: Branch ([[@LINE]]:13): [True: 1, False: [[C2]]]
+            b0);           // BRCOV: Branch ([[@LINE]]:13): [True: [[C2]], False: 0]
 
-  if (c)                   // CHECK: Branch ([[@LINE]]:7): [True: 0, False: 4]
+  if (c)                   // BRCOV: Branch ([[@LINE]]:7): [True: 0, False: [[C4]]]
     printf("case0\n");
   else
     printf("case1\n");
 
-  if (d)                   // CHECK: Branch ([[@LINE]]:7): [True: 4, False: 0]
+  if (d)                   // BRCOV: Branch ([[@LINE]]:7): [True: [[C4]], False: 0]
     printf("case2\n");
   else
     printf("case3\n");
 
-  if (e)                   // CHECK: Branch ([[@LINE]]:7): [True: 1, False: 3]
+  if (e)                   // BRCOV: Branch ([[@LINE]]:7): [True: 1, False: [[C3]]]
     printf("case4\n");
   else
     printf("case5\n");
 
-  if (f)                   // CHECK: Branch ([[@LINE]]:7): [True: 3, False: 1]
+  if (f)                   // BRCOV: Branch ([[@LINE]]:7): [True: [[C3]], False: 1]
     printf("case6\n");
   else
     printf("case7\n");
 }
 
-extern "C" { extern void __llvm_profile_write_file(void); }
+
 int main(int argc, char *argv[])
 {
   func(atoi(argv[1]), atoi(argv[2]));
-  __llvm_profile_write_file();
+  (void)0;
   return 0;
 }
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-macros-single.proftext b/llvm/test/tools/llvm-cov/Inputs/branch-macros-single.proftext
new file mode 100644
index 00000000000000..afb4b1038d3f8f
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-macros-single.proftext
@@ -0,0 +1,53 @@
+# Instrument block coverage
+:single_byte_coverage
+_Z4funcii
+# Func Hash:
+456046650042366162
+# Num Counters:
+19
+# Counter Values:
+3
+1
+0
+1
+0
+1
+0
+1
+0
+1
+0
+0
+0
+0
+0
+0
+0
+0
+0
+
+_Z5func2ii
+# Func Hash:
+14151920320560143107
+# Num Counters:
+10
+# Counter Values:
+3
+3
+2
+1
+0
+3
+0
+3
+1
+0
+
+main
+# Func Hash:
+24
+# Num Counters:
+1
+# Counter Values:
+3
+
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-macros-single.yaml b/llvm/test/tools/llvm-cov/Inputs/branch-macros-single.yaml
new file mode 100644
index 00000000000000..5c5f62b11863bd
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-macros-single.yaml
@@ -0,0 +1,69 @@
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  OSABI:           ELFOSABI_GNU
+  Type:            ET_REL
+  Machine:         EM_X86_64
+  SectionHeaderStringTable: .strtab
+Sections:
+  - Name:            __llvm_covfun
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content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
+  - Name:            '__llvm_covfun (1)'
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         B01D983FC67363959E000000039B9E2C8DB865C493E696313ECE8F5D0D01010101010101010101010101000401241A07020C010E0014140018001D1001010365011C0B1000160405080F002624001000152C0018001D3400200025013C0A1000160305070F001F44001000154C0019001E0119060F0017011D050F00170154091000150205050F001705000F00170121060F00170401070F001F01000F001F5C00100015640019001E0201050F001701000F0017010D060F0017
+  - Name:            '__llvm_covfun (2)'
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         FAD58DE7366495DB09000000180000000000000093E696313ECE8F5D01010001012F010502
+  - Name:            __llvm_covmap
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         0000000016000000000000000600000002130000116272616E63682D6D6163726F732E6370700000
+  - Name:            __llvm_prf_names
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_GNU_RETAIN ]
+    AddressAlign:    0x1
+    Content:         19005F5A3466756E636969015F5A3566756E63326969016D61696E
+  - Type:            SectionHeaderTable
+    Sections:
+      - Name:            .strtab
+      - Name:            __llvm_covfun
+      - Name:            '__llvm_covfun (1)'
+      - Name:            '__llvm_covfun (2)'
+      - Name:            __llvm_covmap
+      - Name:            __llvm_prf_names
+      - Name:            .symtab
+Symbols:
+  - Name:            __llvm_covmap
+    Type:            STT_SECTION
+    Section:         __llvm_covmap
+  - Name:            __llvm_prf_names
+    Type:            STT_SECTION
+    Section:         __llvm_prf_names
+  - Name:            __covrec_B30B5C302CEDA0F0u
+    Type:            STT_OBJECT
+    Section:         __llvm_covfun
+    Binding:         STB_WEAK
+    Size:            0x15B
+    Other:           [ STV_HIDDEN ]
+  - Name:            __covrec_956373C63F981DB0u
+    Type:            STT_OBJECT
+    Section:         '__llvm_covfun (1)'
+    Binding:         STB_WEAK
+    Size:            0xBA
+    Other:           [ STV_HIDDEN ]
+  - Name:            __covrec_DB956436E78DD5FAu
+    Type:            STT_OBJECT
+    Section:         '__llvm_covfun (2)'
+    Binding:         STB_WEAK
+    Size:            0x25
+    Other:           [ STV_HIDDEN ]
+...
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-macros.cpp b/llvm/test/tools/llvm-cov/Inputs/branch-macros.cpp
index 712b2790f774aa..e2abe748d86dc8 100644
--- a/llvm/test/tools/llvm-cov/Inputs/branch-macros.cpp
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-macros.cpp
@@ -12,41 +12,41 @@
 
 #include <stdlib.h>
 
-
+// CHECK: |{{ +}}[[C3:3|1]]|bool func(
 bool func(int a, int b) {
-  bool c = COND1 && COND2; // CHECK: |  |  |  Branch ([[@LINE-12]]:15): [True: 1, False: 2]
-                           // CHECK: |  |  |  Branch ([[@LINE-12]]:15): [True: 0, False: 1]
-  bool d = COND3;          // CHECK: |  |  |  |  |  Branch ([[@LINE-14]]:15): [True: 1, False: 2]
-                           // CHECK: |  |  |  |  |  Branch ([[@LINE-14]]:15): [True: 0, False: 1]
-  bool e = MACRO1;         // CHECK: |  |  |  |  |  |  |  Branch ([[@LINE-16]]:15): [True: 1, False: 2]
-                           // CHECK: |  |  |  |  |  |  |  Branch ([[@LINE-16]]:15): [True: 0, False: 1]
-  bool f = MACRO2;         // CHECK: |  |  |  |  |  |  |  |  |  Branch ([[@LINE-18]]:15): [True: 1, False: 2]
-                           // CHECK: |  |  |  |  |  |  |  |  |  Branch ([[@LINE-18]]:15): [True: 0, False: 1]
-  bool g = MACRO3;         // CHECK: |  |  |  |  |  |  |  |  |  |  |  Branch ([[@LINE-20]]:15): [True: 1, False: 2]
-                           // CHECK: |  |  |  |  |  |  |  |  |  |  |  Branch ([[@LINE-20]]:15): [True: 0, False: 1]
+  bool c = COND1 && COND2; // BRCOV: |  |  |  Branch ([[@LINE-12]]:15): [True: 1, False: [[C2:2|1]]]
+                           // BRCOV: |  |  |  Branch ([[@LINE-12]]:15): [True: 0, False: 1]
+  bool d = COND3;          // BRCOV: |  |  |  |  |  Branch ([[@LINE-14]]:15): [True: 1, False: [[C2]]]
+                           // BRCOV: |  |  |  |  |  Branch ([[@LINE-14]]:15): [True: 0, False: 1]
+  bool e = MACRO1;         // BRCOV: |  |  |  |  |  |  |  Branch ([[@LINE-16]]:15): [True: 1, False: [[C2]]]
+                           // BRCOV: |  |  |  |  |  |  |  Branch ([[@LINE-16]]:15): [True: 0, False: 1]
+  bool f = MACRO2;         // BRCOV: |  |  |  |  |  |  |  |  |  Branch ([[@LINE-18]]:15): [True: 1, False: [[C2]]]
+                           // BRCOV: |  |  |  |  |  |  |  |  |  Branch ([[@LINE-18]]:15): [True: 0, False: 1]
+  bool g = MACRO3;         // BRCOV: |  |  |  |  |  |  |  |  |  |  |  Branch ([[@LINE-20]]:15): [True: 1, False: [[C2]]]
+                           // BRCOV: |  |  |  |  |  |  |  |  |  |  |  Branch ([[@LINE-20]]:15): [True: 0, False: 1]
   return c && d && e && f && g;
-                           // CHECK: |  Branch ([[@LINE-1]]:10): [True: 0, False: 3]
-                           // CHECK: |  Branch ([[@LINE-2]]:15): [True: 0, False: 0]
-                           // CHECK: |  Branch ([[@LINE-3]]:20): [True: 0, False: 0]
-                           // CHECK: |  Branch ([[@LINE-4]]:25): [True: 0, False: 0]
-                           // CHECK: |  Branch ([[@LINE-5]]:30): [True: 0, False: 0]
+                           // BRCOV: |  Branch ([[@LINE-1]]:10): [True: 0, False: [[C3]]]
+                           // BRCOV: |  Branch ([[@LINE-2]]:15): [True: 0, False: 0]
+                           // BRCOV: |  Branch ([[@LINE-3]]:20): [True: 0, False: 0]
+                           // BRCOV: |  Branch ([[@LINE-4]]:25): [True: 0, False: 0]
+                           // BRCOV: |  Branch ([[@LINE-5]]:30): [True: 0, False: 0]
 }
 
 
 bool func2(int a, int b) {
-    bool h = MACRO3 || COND4;  // CHECK: |  |  |  |  |  |  |  |  |  |  |  Branch ([[@LINE-32]]:15): [True: 1, False: 2]
-                               // CHECK: |  |  |  |  |  |  |  |  |  |  |  Branch ([[@LINE-32]]:15): [True: 0, False: 1]
-                               // CHECK: |  |  |  |  |  |  |  Branch ([[@LINE-34]]:15): [True: 1, False: 2]
-                               // CHECK: |  |  |  |  |  |  |  Branch ([[@LINE-34]]:15): [True: 0, False: 1]
-                               // CHECK: |  |  |  Branch ([[@LINE-33]]:15): [True: 1, False: 2]
+    bool h = MACRO3 || COND4;  // BRCOV: |  |  |  |  |  |  |  |  |  |  |  Branch ([[@LINE-32]]:15): [True: 1, False: [[C2]]]
+                               // BRCOV: |  |  |  |  |  |  |  |  |  |  |  Branch ([[@LINE-32]]:15): [True: 0, False: 1]
+                               // BRCOV: |  |  |  |  |  |  |  Branch ([[@LINE-34]]:15): [True: 1, False: [[C2]]]
+                               // BRCOV: |  |  |  |  |  |  |  Branch ([[@LINE-34]]:15): [True: 0, False: 1]
+                               // BRCOV: |  |  |  Branch ([[@LINE-33]]:15): [True: 1, False: [[C2]]]
   return h;
 }
 
-extern "C" { extern void __llvm_profile_write_file(void); }
+
 int main(int argc, char *argv[])
 {
   func(atoi(argv[1]), atoi(argv[2]));
   func2(atoi(argv[1]), atoi(argv[2]));
-  __llvm_profile_write_file();
+  (void)0;
   return 0;
 }
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-showBranchPercentage.c b/llvm/test/tools/llvm-cov/Inputs/branch-showBranchPercentage.c
index c41739ff0b22f1..6db980a8bd64a8 100644
--- a/llvm/test/tools/llvm-cov/Inputs/branch-showBranchPercentage.c
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-showBranchPercentage.c
@@ -13,7 +13,7 @@ int main(int argc, char *argv[])
   int i = 0;
   if (argc < 3)                       // CHECK: Branch ([[@LINE]]:7): [True: 16.67%, False: 83.33%]
   {
-    __llvm_profile_write_file();
+    (void)0;
     return 0;
   }
 
@@ -52,7 +52,7 @@ int main(int argc, char *argv[])
     printf("loop\n");
   } while (i++ < 10);                 // CHECK: Branch ([[@LINE]]:12): [True: 90.91%, False: 9.09%]
 
-  __llvm_profile_write_file();
+  (void)b;
 
-  return b;
+  return 0;
 }
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-templates-single.proftext b/llvm/test/tools/llvm-cov/Inputs/branch-templates-single.proftext
new file mode 100644
index 00000000000000..829431334478f3
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-templates-single.proftext
@@ -0,0 +1,49 @@
+# Instrument block coverage
+:single_byte_coverage
+_Z4funcIbEiT_
+# Func Hash:
+11045778961
+# Num Counters:
+4
+# Counter Values:
+1
+1
+0
+0
+
+_Z4funcIfEiT_
+# Func Hash:
+11045778961
+# Num Counters:
+4
+# Counter Values:
+1
+0
+1
+0
+
+_Z4funcIiEiT_
+# Func Hash:
+11045778961
+# Num Counters:
+4
+# Counter Values:
+1
+0
+1
+0
+
+main
+# Func Hash:
+185286008276329560
+# Num Counters:
+7
+# Counter Values:
+1
+1
+1
+0
+1
+1
+1
+
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-templates-single.yaml b/llvm/test/tools/llvm-cov/Inputs/branch-templates-single.yaml
new file mode 100644
index 00000000000000..d4ede6db448e61
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-templates-single.yaml
@@ -0,0 +1,81 @@
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  OSABI:           ELFOSABI_GNU
+  Type:            ET_REL
+  Machine:         EM_X86_64
+  SectionHeaderStringTable: .strtab
+Sections:
+  - Name:            __llvm_covfun
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         FAD58DE7366495DB5100000058242991A444920226ED9A40DAABBC6B0101000D011D0C090201010700130500140185808080080501050016090103060209000700170D00180185808080080D01050016110103040211000700171500180185808080081501050016190103010B
+  - Name:            '__llvm_covfun (1)'
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         5427717259E0E43E38000000113661920200000026ED9A40DAABBC6B01010008010D0F06020101060007050008018580808008050105000D09000E028580808008090205000D0D000E0183808080080D01030102
+  - Name:            '__llvm_covfun (2)'
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         4B7E22082F0551AA38000000113661920200000026ED9A40DAABBC6B01010008010D0F06020101060007050008018580808008050105000D09000E028580808008090205000D0D000E0183808080080D01030102
+  - Name:            '__llvm_covfun (3)'
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         AC1440BC3DA3E41A38000000113661920200000026ED9A40DAABBC6B01010008010D0F06020101060007050008018580808008050105000D09000E028580808008090205000D0D000E0183808080080D01030102
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+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         0000000019000000000000000600000002160000146272616E63682D74656D706C617465732E637070000000
+  - Name:            __llvm_prf_names
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_GNU_RETAIN ]
+    AddressAlign:    0x1
+    Content:         2E006D61696E015F5A3466756E6349694569545F015F5A3466756E6349624569545F015F5A3466756E6349664569545F
+  - Type:            SectionHeaderTable
+    Sections:
+      - Name:            .strtab
+      - Name:            __llvm_covfun
+      - Name:            '__llvm_covfun (1)'
+      - Name:            '__llvm_covfun (2)'
+      - Name:            '__llvm_covfun (3)'
+      - Name:            __llvm_covmap
+      - Name:            __llvm_prf_names
+      - Name:            .symtab
+Symbols:
+  - Name:            __llvm_covmap
+    Type:            STT_SECTION
+    Section:         __llvm_covmap
+  - Name:            __llvm_prf_names
+    Type:            STT_SECTION
+    Section:         __llvm_prf_names
+  - Name:            __covrec_DB956436E78DD5FAu
+    Type:            STT_OBJECT
+    Section:         __llvm_covfun
+    Binding:         STB_WEAK
+    Size:            0x6D
+    Other:           [ STV_HIDDEN ]
+  - Name:            __covrec_3EE4E05972712754u
+    Type:            STT_OBJECT
+    Section:         '__llvm_covfun (1)'
+    Binding:         STB_WEAK
+    Size:            0x54
+    Other:           [ STV_HIDDEN ]
+  - Name:            __covrec_AA51052F08227E4Bu
+    Type:            STT_OBJECT
+    Section:         '__llvm_covfun (2)'
+    Binding:         STB_WEAK
+    Size:            0x54
+    Other:           [ STV_HIDDEN ]
+  - Name:            __covrec_1AE4A33DBC4014ACu
+    Type:            STT_OBJECT
+    Section:         '__llvm_covfun (3)'
+    Binding:         STB_WEAK
+    Size:            0x54
+    Other:           [ STV_HIDDEN ]
+...
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-templates.cpp b/llvm/test/tools/llvm-cov/Inputs/branch-templates.cpp
index 0795a5346380de..4d932eaf5944a8 100644
--- a/llvm/test/tools/llvm-cov/Inputs/branch-templates.cpp
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-templates.cpp
@@ -11,28 +11,28 @@ void unused(T x) {
 
 template<typename T>
 int func(T x) {
-  if(x)       // CHECK: |  Branch ([[@LINE]]:6): [True: 0, False: 1]
-    return 0; // CHECK: |  Branch ([[@LINE-1]]:6): [True: 1, False: 0]
-  else        // CHECK: |  Branch ([[@LINE-2]]:6): [True: 0, False: 1]
+  if(x)       // BRCOV: |  Branch ([[@LINE]]:6): [True: 0, False: 1]
+    return 0; // BRCOV: |  Branch ([[@LINE-1]]:6): [True: 1, False: 0]
+  else        // BRCOV: |  Branch ([[@LINE-2]]:6): [True: 0, False: 1]
     return 1;
   int j = 1;
 }
 
               // CHECK-LABEL: _Z4funcIiEiT_:
-              // CHECK: |  |  Branch ([[@LINE-8]]:6): [True: 0, False: 1]
+              // BRCOV: |  |  Branch ([[@LINE-8]]:6): [True: 0, False: 1]
               // CHECK-LABEL: _Z4funcIbEiT_:
-              // CHECK: |  |  Branch ([[@LINE-10]]:6): [True: 1, False: 0]
+              // BRCOV: |  |  Branch ([[@LINE-10]]:6): [True: 1, False: 0]
               // CHECK-LABEL: _Z4funcIfEiT_:
-              // CHECK: |  |  Branch ([[@LINE-12]]:6): [True: 0, False: 1]
+              // BRCOV: |  |  Branch ([[@LINE-12]]:6): [True: 0, False: 1]
+
 
-extern "C" { extern void __llvm_profile_write_file(void); }
 int main() {
-  if (func<int>(0))      // CHECK: |  Branch ([[@LINE]]:7): [True: 1, False: 0]
+  if (func<int>(0))      // BRCOV: |  Branch ([[@LINE]]:7): [True: 1, False: 0]
     printf("case1\n");
-  if (func<bool>(true))  // CHECK: |  Branch ([[@LINE]]:7): [True: 0, False: 1]
+  if (func<bool>(true))  // BRCOV: |  Branch ([[@LINE]]:7): [True: 0, False: 1]
     printf("case2\n");
-  if (func<float>(0.0))  // CHECK: |  Branch ([[@LINE]]:7): [True: 1, False: 0]
+  if (func<float>(0.0))  // BRCOV: |  Branch ([[@LINE]]:7): [True: 1, False: 0]
     printf("case3\n");
-  __llvm_profile_write_file();
+  (void)0;
   return 0;
 }
diff --git a/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts-single.proftext b/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts-single.proftext
new file mode 100644
index 00000000000000..1b7b949de49625
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts-single.proftext
@@ -0,0 +1,23 @@
+# Instrument block coverage
+:single_byte_coverage
+main
+# Func Hash:
+15239891155360101223
+# Num Counters:
+14
+# Counter Values:
+161
+0
+161
+161
+161
+161
+161
+161
+161
+161
+0
+161
+0
+161
+
diff --git a/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts-single.yaml b/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts-single.yaml
new file mode 100644
index 00000000000000..84b184023f0822
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts-single.yaml
@@ -0,0 +1,45 @@
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  OSABI:           ELFOSABI_GNU
+  Type:            ET_REL
+  Machine:         EM_X86_64
+  SectionHeaderStringTable: .strtab
+Sections:
+  - Name:            __llvm_covfun
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         FAD58DE7366495DB9A0000006733DBEA42F87ED3C60E0B951FF3509D0101001A01060C130210020100010101070008050009008A8080800805000A0204090204008A8080800809000A020410030100010D01030A02110013001A15001C001F19002000A180808008190021020410030100011D010306021D0007000D25000F0090808080082500100015290018001D2101030502210007000D31000F018980808008310109000E350109000E10010100012D0103000B
+  - Name:            __llvm_covmap
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_GNU_RETAIN ]
+    AddressAlign:    0x8
+    Content:         00000000200000000000000006000000021D00001B73686F774C696E65457865637574696F6E436F756E74732E637070
+  - Name:            __llvm_prf_names
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_GNU_RETAIN ]
+    AddressAlign:    0x1
+    Content:         04006D61696E
+  - Type:            SectionHeaderTable
+    Sections:
+      - Name:            .strtab
+      - Name:            __llvm_covfun
+      - Name:            __llvm_covmap
+      - Name:            __llvm_prf_names
+      - Name:            .symtab
+Symbols:
+  - Name:            __llvm_covmap
+    Type:            STT_SECTION
+    Section:         __llvm_covmap
+  - Name:            __llvm_prf_names
+    Type:            STT_SECTION
+    Section:         __llvm_prf_names
+  - Name:            __covrec_DB956436E78DD5FAu
+    Type:            STT_OBJECT
+    Section:         __llvm_covfun
+    Binding:         STB_WEAK
+    Size:            0xB6
+    Other:           [ STV_HIDDEN ]
+...
diff --git a/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp b/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp
index c7e8c8fb0c75e4..b14409f173849d 100644
--- a/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp
+++ b/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp
@@ -3,26 +3,26 @@
 // before any coverage              // WHOLE-FILE: [[@LINE]]|      |// before
                                     // FILTER-NOT: [[@LINE-1]]|    |// before
 // HTML: <td class='line-number'><a name='L[[@LINE+1]]' href='#L[[@LINE+1]]'><pre>[[@LINE+1]]</pre></a></td><td class='covered-line'><pre>161</pre></td><td class='code'><pre>int main() {
-int main() {                              // TEXT: [[@LINE]]|   161|int main(
-  int x = 0;                              // TEXT: [[@LINE]]|   161|  int x
-                                          // TEXT: [[@LINE]]|   161|
-  if (x) {                                // TEXT: [[@LINE]]|   161|  if (x)
-    x = 0;                                // TEXT: [[@LINE]]|     0|    x = 0
-  } else {                                // TEXT: [[@LINE]]|   161|  } else
-    x = 1;                                // TEXT: [[@LINE]]|   161|    x = 1
-  }                                       // TEXT: [[@LINE]]|   161|  }
-                                          // TEXT: [[@LINE]]|   161|
-  for (int i = 0; i < 100; ++i) {         // TEXT: [[@LINE]]| 16.2k|  for (
-    x = 1;                                // TEXT: [[@LINE]]| 16.1k|    x = 1
-  }                                       // TEXT: [[@LINE]]| 16.1k|  }
-                                          // TEXT: [[@LINE]]|   161|
-  x = x < 10 ? x + 1 : x - 1;             // TEXT: [[@LINE]]|   161|  x =
-  x = x > 10 ?                            // TEXT: [[@LINE]]|   161|  x =
-        x - 1:                            // TEXT: [[@LINE]]|     0|        x
-        x + 1;                            // TEXT: [[@LINE]]|   161|        x
-                                          // TEXT: [[@LINE]]|   161|
-  return 0;                               // TEXT: [[@LINE]]|   161|  return
-}                                         // TEXT: [[@LINE]]|   161|}
+int main() {                              // TEXT: [[@LINE]]|     [[C161:161|1]]|int main(
+  int x = 0;                              // TEXT: [[@LINE]]|           [[C161]]|  int x
+
+  if (x) {                                // TEXT: [[@LINE]]|           [[C161]]|  if (x)
+    x = 0;                                // TEXT: [[@LINE]]|                  0|    x = 0
+  } else {                                // TEXT: [[@LINE]]|           [[C161]]|  } else
+    x = 1;                                // TEXT: [[@LINE]]|           [[C161]]|    x = 1
+  }                                       // TEXT: [[@LINE]]|           [[C161]]|  }
+
+  for (int i = 0; i < 100; ++i) {         // TEXT: [[@LINE]]| [[C16K2:16\.2k|161]]|  for (
+    x = 1;                                // TEXT: [[@LINE]]| [[C16K1:16\.1k|161]]|    x = 1
+  }                                       // TEXT: [[@LINE]]|          [[C16K1]]|  }
+
+  x = x < 10 ? x + 1 : x - 1;             // TEXT: [[@LINE]]|           [[C161]]|  x =
+  x = x > 10 ?                            // TEXT: [[@LINE]]|           [[C161]]|  x =
+        x - 1:                            // TEXT: [[@LINE]]|                  0|        x
+        x + 1;                            // TEXT: [[@LINE]]|           [[C161]]|        x
+
+  return 0;                               // TEXT: [[@LINE]]|           [[C161]]|  return
+}                                         // TEXT: [[@LINE]]|           [[C161]]|}
 // after coverage                   // WHOLE-FILE: [[@LINE]]|      |// after
                                     // FILTER-NOT: [[@LINE-1]]|    |// after
 // HTML-WHOLE-FILE: <td class='line-number'><a name='L[[@LINE-2]]' href='#L[[@LINE-2]]'><pre>[[@LINE-2]]</pre></a></td><td class='skipped-line'></td><td class='code'><pre>// after
diff --git a/llvm/test/tools/llvm-cov/branch-c-general.test b/llvm/test/tools/llvm-cov/branch-c-general.test
index 865a2662460e83..3d0b7ee563222d 100644
--- a/llvm/test/tools/llvm-cov/branch-c-general.test
+++ b/llvm/test/tools/llvm-cov/branch-c-general.test
@@ -164,3 +164,7 @@
 // HTML-INDEX: 79.07% (136/172)
 // HTML-INDEX: <tr class='light-row-bold'>
 // HTML-INDEX: Totals
+
+// RUN: yaml2obj %S/Inputs/branch-c-general-single.yaml -o %t.o
+// RUN: llvm-profdata merge %S/Inputs/branch-c-general-single.proftext -o %t.profdata
+// RUN: llvm-cov show --show-branches=count %t.o -instr-profile %t.profdata -path-equivalence=.,%S/Inputs %S/Inputs/branch-c-general.c | FileCheck %S/Inputs/branch-c-general.c
diff --git a/llvm/test/tools/llvm-cov/branch-logical-mixed.test b/llvm/test/tools/llvm-cov/branch-logical-mixed.test
index a07d2357f2c34d..b03cabeb01855b 100644
--- a/llvm/test/tools/llvm-cov/branch-logical-mixed.test
+++ b/llvm/test/tools/llvm-cov/branch-logical-mixed.test
@@ -1,8 +1,14 @@
 // RUN: llvm-profdata merge %S/Inputs/branch-logical-mixed.proftext -o %t.profdata
-// RUN: llvm-cov show --show-branches=count %S/Inputs/branch-logical-mixed.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck %S/Inputs/branch-logical-mixed.cpp
+// RUN: llvm-cov show --show-branches=count %S/Inputs/branch-logical-mixed.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck %S/Inputs/branch-logical-mixed.cpp -check-prefixes=CHECK,BRCOV
 // RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-logical-mixed.o32l -instr-profile %t.profdata -show-functions -path-equivalence=/tmp,%S/Inputs %S/Inputs/branch-logical-mixed.cpp
 | FileCheck %s -check-prefix=REPORT
 
+// RUN: yaml2obj %S/Inputs/branch-logical-mixed-single.yaml -o %t.o
+// RUN: llvm-profdata merge %S/Inputs/branch-logical-mixed-single.proftext -o %t.profdata
+// RUN: llvm-cov show --show-branches=count %t.o -instr-profile %t.profdata -path-equivalence=.,%S/Inputs | FileCheck %S/Inputs/branch-logical-mixed.cpp
+// RUN: llvm-cov report --show-branch-summary %t.o -instr-profile %t.profdata -show-functions -path-equivalence=.,%S/Inputs %S/Inputs/branch-logical-mixed.cpp
+| FileCheck %s -check-prefix=REPORT
+
 // REPORT:      Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
 // REPORT-NEXT: ---
 // REPORT-NEXT: _Z4funcii                        77      15  80.52%        60       2  96.67%        80      30  62.50%
diff --git a/llvm/test/tools/llvm-cov/branch-macros.test b/llvm/test/tools/llvm-cov/branch-macros.test
index fbe7694b4f4e05..a4790afc534228 100644
--- a/llvm/test/tools/llvm-cov/branch-macros.test
+++ b/llvm/test/tools/llvm-cov/branch-macros.test
@@ -1,7 +1,11 @@
 // RUN: llvm-profdata merge %S/Inputs/branch-macros.proftext -o %t.profdata
-// RUN: llvm-cov show --show-expansions --show-branches=count %S/Inputs/branch-macros.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck %S/Inputs/branch-macros.cpp
+// RUN: llvm-cov show --show-expansions --show-branches=count %S/Inputs/branch-macros.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck %S/Inputs/branch-macros.cpp -check-prefixes=CHECK,BRCOV
 // RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-macros.o32l -instr-profile %t.profdata -show-functions -path-equivalence=/tmp,%S/Inputs %S/Inputs/branch-macros.cpp | FileCheck %s -check-prefix=REPORT
 
+// RUN: yaml2obj %S/Inputs/branch-macros-single.yaml -o %t.o
+// RUN: llvm-profdata merge %S/Inputs/branch-macros-single.proftext -o %t.profdata
+// RUN: llvm-cov show --show-expansions --show-branches=count %t.o -instr-profile %t.profdata -path-equivalence=.,%S/Inputs | FileCheck %S/Inputs/branch-macros.cpp
+
 // REPORT:      Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
 // REPORT-NEXT: ---
 // REPORT-NEXT: _Z4funcii                        28       4  85.71%        18       0 100.00%        30      14  53.33%
diff --git a/llvm/test/tools/llvm-cov/branch-templates.test b/llvm/test/tools/llvm-cov/branch-templates.test
index 74aef16050228a..d5535022239f5f 100644
--- a/llvm/test/tools/llvm-cov/branch-templates.test
+++ b/llvm/test/tools/llvm-cov/branch-templates.test
@@ -3,6 +3,10 @@
 // RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-templates.o32l -instr-profile %t.profdata -show-functions -path-equivalence=/tmp,%S/Inputs %S/Inputs/branch-templates.cpp | FileCheck %s -check-prefix=REPORT
 // RUN: llvm-cov report --show-branch-summary %S/Inputs/branch-templates.o32l -instr-profile %t.profdata -path-equivalence=/tmp,%S/Inputs | FileCheck %s -check-prefix=REPORTFILE
 
+// RUN: yaml2obj %S/Inputs/branch-templates-single.yaml -o %t.o
+// RUN: llvm-profdata merge %S/Inputs/branch-templates-single.proftext -o %t.profdata
+// RUN: llvm-cov show --show-expansions --show-branches=count %t.o -instr-profile %t.profdata -path-equivalence=.,%S/Inputs | FileCheck %S/Inputs/branch-templates.cpp
+
 // REPORT:      Name                        Regions    Miss   Cover     Lines    Miss   Cover  Branches    Miss   Cover
 // REPORT-NEXT: ---
 // REPORT-NEXT: main                              7       1  85.71%        10       1  90.00%         6       3  50.00%
diff --git a/llvm/test/tools/llvm-cov/showLineExecutionCounts.test b/llvm/test/tools/llvm-cov/showLineExecutionCounts.test
index 997b16a0b8e94f..2c0669a7cec42a 100644
--- a/llvm/test/tools/llvm-cov/showLineExecutionCounts.test
+++ b/llvm/test/tools/llvm-cov/showLineExecutionCounts.test
@@ -41,3 +41,10 @@
 // HTML-INDEX: 72.73% (8/11)
 // HTML-INDEX: <tr class='light-row-bold'>
 // HTML-INDEX: Totals
+
+// Single byte
+// RUN: yaml2obj %S/Inputs/showLineExecutionCounts-single.yaml -o %t.o
+// RUN: llvm-profdata merge %S/Inputs/showLineExecutionCounts-single.proftext -o %t.profdata
+
+// RUN: llvm-cov show %t.o -instr-profile %t.profdata -path-equivalence=.,%S/Inputs | FileCheck -check-prefixes=TEXT,WHOLE-FILE %S/Inputs/showLineExecutionCounts.cpp
+// RUN: llvm-cov show %t.o -instr-profile %t.profdata -path-equivalence=.,%S/Inputs -name=main | FileCheck -check-prefixes=TEXT,FILTER %S/Inputs/showLineExecutionCounts.cpp

>From 5fc3408628a72560490c5271de171a636f5be50a Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic at gmail.com>
Date: Wed, 20 Nov 2024 23:46:58 +0900
Subject: [PATCH 8/9] Fix a test to fix linecount=1

---
 llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp b/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp
index b14409f173849d..b63247341a28e4 100644
--- a/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp
+++ b/llvm/test/tools/llvm-cov/Inputs/showLineExecutionCounts.cpp
@@ -12,8 +12,8 @@ int main() {                              // TEXT: [[@LINE]]|     [[C161:161|1]]
     x = 1;                                // TEXT: [[@LINE]]|           [[C161]]|    x = 1
   }                                       // TEXT: [[@LINE]]|           [[C161]]|  }
 
-  for (int i = 0; i < 100; ++i) {         // TEXT: [[@LINE]]| [[C16K2:16\.2k|161]]|  for (
-    x = 1;                                // TEXT: [[@LINE]]| [[C16K1:16\.1k|161]]|    x = 1
+  for (int i = 0; i < 100; ++i) {         // TEXT: [[@LINE]]| [[C16K2:16\.2k|1]]|  for (
+    x = 1;                                // TEXT: [[@LINE]]| [[C16K1:16\.1k|1]]|    x = 1
   }                                       // TEXT: [[@LINE]]|          [[C16K1]]|  }
 
   x = x < 10 ? x + 1 : x - 1;             // TEXT: [[@LINE]]|           [[C161]]|  x =

>From cce771fa5512089c69ddfad30f2267124f3f46b5 Mon Sep 17 00:00:00 2001
From: NAKAMURA Takumi <geek4civic at gmail.com>
Date: Thu, 21 Nov 2024 00:18:39 +0900
Subject: [PATCH 9/9] Update test

---
 .../Inputs/branch-c-general-single.proftext   |  6 ++--
 .../Inputs/branch-c-general-single.yaml       | 12 +++----
 .../tools/llvm-cov/Inputs/branch-c-general.c  | 32 +++++++++----------
 3 files changed, 26 insertions(+), 24 deletions(-)

diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.proftext b/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.proftext
index ea8c6f9bc634ed..b92df1d6a38a32 100644
--- a/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.proftext
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.proftext
@@ -192,7 +192,7 @@ jumps
 # Func Hash:
 15051420506203462683
 # Num Counters:
-38
+39
 # Counter Values:
 1
 1
@@ -232,6 +232,7 @@ jumps
 1
 1
 1
+0
 
 main
 # Func Hash:
@@ -263,7 +264,7 @@ switches
 # Func Hash:
 43242458792028222
 # Num Counters:
-29
+30
 # Counter Values:
 1
 1
@@ -294,4 +295,5 @@ switches
 1
 0
 0
+0
 
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.yaml b/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.yaml
index 9d23dcb67ad2ac..6bbf80e14941d6 100644
--- a/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.yaml
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-c-general-single.yaml
@@ -26,17 +26,17 @@ Sections:
     Type:            SHT_PROGBITS
     Flags:           [ SHF_GNU_RETAIN ]
     AddressAlign:    0x8
-    Content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
+    Content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@@ -124,19 +124,19 @@ Symbols:
     Type:            STT_OBJECT
     Section:         '__llvm_covfun (3)'
     Binding:         STB_WEAK
-    Size:            0x1D4
+    Size:            0x1F1
     Other:           [ STV_HIDDEN ]
   - Name:            __covrec_BF9282263CCA2971u
     Type:            STT_OBJECT
     Section:         '__llvm_covfun (4)'
     Binding:         STB_WEAK
-    Size:            0x169
+    Size:            0x1A7
     Other:           [ STV_HIDDEN ]
   - Name:            __covrec_7B4187606E1C4D3Fu
     Type:            STT_OBJECT
     Section:         '__llvm_covfun (5)'
     Binding:         STB_WEAK
-    Size:            0x14E
+    Size:            0x181
     Other:           [ STV_HIDDEN ]
   - Name:            __covrec_58A39A89A88AA459u
     Type:            STT_OBJECT
diff --git a/llvm/test/tools/llvm-cov/Inputs/branch-c-general.c b/llvm/test/tools/llvm-cov/Inputs/branch-c-general.c
index 5ea9ecb42b0ed1..5fb4ad3c364dca 100644
--- a/llvm/test/tools/llvm-cov/Inputs/branch-c-general.c
+++ b/llvm/test/tools/llvm-cov/Inputs/branch-c-general.c
@@ -86,11 +86,11 @@ void jumps() {                  // CHECK: @LINE|{{.*}}jumps()
   while (i < 3) {               // BRCOV: Branch ([[@LINE]]:10): [True: 0, False: 1]
   loop2:
     switch (i) {
-    case 0:                     // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+    case 0:                     // CHECK: Branch ([[@LINE]]:5): [True: 1, Folded]
       goto first;
-    case 1:                     // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+    case 1:                     // CHECK: Branch ([[@LINE]]:5): [True: 1, Folded]
       goto second;
-    case 2:                     // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+    case 2:                     // CHECK: Branch ([[@LINE]]:5): [True: 1, Folded]
       goto third;
     }
   }
@@ -110,30 +110,30 @@ void switches() {               // CHECK: @LINE|{{.*}}switches()
 
   // No cases -> no weights
   switch (weights[0]) {
-  default:                      // BRCOV: Branch ([[@LINE]]:3): [True: 1, Folded]
+  default:                      // CHECK: Branch ([[@LINE]]:3): [True: 1, Folded]
     break;
   }
                                 // BRCOV: Branch ([[@LINE+1]]:63): [True: [[C15:15|1]], False: 0]
   for (int i = 0, len = sizeof(weights) / sizeof(weights[0]); i < len; ++i) {
     switch (i[weights]) {
-    case 1:                     // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+    case 1:                     // CHECK: Branch ([[@LINE]]:5): [True: 1, Folded]
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: 0, False: 1]
       // fallthrough
-    case 2:                     // BRCOV: Branch ([[@LINE]]:5): [True: [[C2]], Folded]
+    case 2:                     // CHECK: Branch ([[@LINE]]:5): [True: [[C2:2|1]], Folded]
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C2]], False: 1]
       break;
-    case 3:                     // BRCOV: Branch ([[@LINE]]:5): [True: [[C3:3|1]], Folded]
+    case 3:                     // CHECK: Branch ([[@LINE]]:5): [True: [[C3:3|1]], Folded]
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C3]], False: 0]
       continue;
-    case 4:                     // BRCOV: Branch ([[@LINE]]:5): [True: [[C4:4|1]], Folded]
+    case 4:                     // CHECK: Branch ([[@LINE]]:5): [True: [[C4:4|1]], Folded]
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C4]], False: 0]
       switch (i) {
-      case 6 ... 9:             // BRCOV: Branch ([[@LINE]]:7): [True: [[C4]], Folded]
+      case 6 ... 9:             // CHECK: Branch ([[@LINE]]:7): [True: [[C4]], Folded]
         if (i) {}               // BRCOV: Branch ([[@LINE]]:13): [True: [[C4]], False: 0]
         continue;
       }
 
-    default:                    // BRCOV: Branch ([[@LINE]]:5): [True: [[C5:5|1]], Folded]
+    default:                    // CHECK: Branch ([[@LINE]]:5): [True: [[C5:5|1]], Folded]
       if (i == len - 1)         // BRCOV: Branch ([[@LINE]]:11): [True: 1, False: [[C4]]]
         return;
     }
@@ -147,21 +147,21 @@ void switches() {               // CHECK: @LINE|{{.*}}switches()
 void big_switch() {             // CHECK: @LINE|{{.*}}big_switch()
   for (int i = 0; i < 32; ++i) {// BRCOV: Branch ([[@LINE]]:19): [True: [[C32:32|1]], False: 1]
     switch (1 << i) {
-    case (1 << 0):              // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+    case (1 << 0):              // CHECK: Branch ([[@LINE]]:5): [True: 1, Folded]
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: 0, False: 1]
       // fallthrough
-    case (1 << 1):              // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+    case (1 << 1):              // CHECK: Branch ([[@LINE]]:5): [True: 1, Folded]
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: 1, False: 1]
       break;
-    case (1 << 2) ... (1 << 12):// BRCOV: Branch ([[@LINE]]:5): [True: [[C11:11|1]], Folded]
+    case (1 << 2) ... (1 << 12):// CHECK: Branch ([[@LINE]]:5): [True: [[C11:11|1]], Folded]
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C11]], False: 0]
       break;
       // The branch for the large case range above appears after the case body.
 
-    case (1 << 13):             // BRCOV: Branch ([[@LINE]]:5): [True: 1, Folded]
+    case (1 << 13):             // CHECK: Branch ([[@LINE]]:5): [True: 1, Folded]
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: 1, False: 0]
       break;
-    case (1 << 14) ... (1 << 28)://BRCOV: Branch ([[@LINE]]:5): [True: [[C15]], Folded]
+    case (1 << 14) ... (1 << 28)://CHECK: Branch ([[@LINE]]:5): [True: [[C15:15|1]], Folded]
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C15]], False: 0]
       break;
     // The branch for the large case range above appears after the case body.
@@ -169,7 +169,7 @@ void big_switch() {             // CHECK: @LINE|{{.*}}big_switch()
     case (1 << 29) ... ((1 << 29) + 1):
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: 1, False: 0]
       break;
-    default:                    // BRCOV: Branch ([[@LINE]]:5): [True: [[C2]], Folded]
+    default:                    // CHECK: Branch ([[@LINE]]:5): [True: [[C2:2|1]], Folded]
       if (i) {}                 // BRCOV: Branch ([[@LINE]]:11): [True: [[C2]], False: 0]
       break;
     }



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