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llvm-cov: Show FileCoverageSummary with getCoverageForFile() #121192

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c1678ea
llvm-cov: Use `getCoverageForFile()`
chapuni Dec 27, 2024
71b5be7
s/IsSummaryEmpty/isSummaryEmpty/
chapuni Jan 6, 2025
2c9593f
Merge branch 'users/chapuni/cov/merge/forfile-base' into users/chapun…
chapuni Jan 7, 2025
00ac189
Merge branch 'users/chapuni/cov/merge/forfile-base' into users/chapun…
chapuni Jan 10, 2025
33f28e8
Update tests
chapuni Jan 10, 2025
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4 changes: 3 additions & 1 deletion llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h
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Expand Up @@ -1023,7 +1023,9 @@ class CoverageMapping {
/// The given filename must be the name as recorded in the coverage
/// information. That is, only names returned from getUniqueSourceFiles will
/// yield a result.
CoverageData getCoverageForFile(StringRef Filename) const;
CoverageData getCoverageForFile(
StringRef Filename,
const DenseSet<const FunctionRecord *> &FilteredOutFunctions = {}) const;

/// Get the coverage for a particular function.
CoverageData getCoverageForFunction(const FunctionRecord &Function) const;
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6 changes: 5 additions & 1 deletion llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
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Expand Up @@ -1448,7 +1448,9 @@ static bool isExpansion(const CountedRegion &R, unsigned FileID) {
return R.Kind == CounterMappingRegion::ExpansionRegion && R.FileID == FileID;
}

CoverageData CoverageMapping::getCoverageForFile(StringRef Filename) const {
CoverageData CoverageMapping::getCoverageForFile(
StringRef Filename,
const DenseSet<const FunctionRecord *> &FilteredOutFunctions) const {
assert(SingleByteCoverage);
MergeableCoverageData FileCoverage(*SingleByteCoverage, Filename);

Expand All @@ -1458,6 +1460,8 @@ CoverageData CoverageMapping::getCoverageForFile(StringRef Filename) const {
getImpreciseRecordIndicesForFilename(Filename);
for (unsigned RecordIndex : RecordIndices) {
const FunctionRecord &Function = Functions[RecordIndex];
if (FilteredOutFunctions.count(&Function))
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From the commit message, it is not obvious to me why we are now filtering out functions. Can you explain?

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The caller, llvm-cov, has the filter. I chose "blacklist" (rather than whitelist) since it is expected empty in usual cases.

continue;
auto MainFileID = findMainViewFileID(Filename, Function);
auto FileIDs = gatherFileIDs(Filename, Function);
FileCoverage.addFunctionRegions(
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4 changes: 2 additions & 2 deletions llvm/test/tools/llvm-cov/branch-macros.test
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Expand Up @@ -19,6 +19,6 @@

// FILE: Filename Regions Missed Regions Cover Functions Missed Functions Executed Lines Missed Lines Cover Branches Missed Branches Cover
// FILE-NEXT: ---
// FILE-NEXT: branch-macros.cpp 16 4 75.00% 3 0 100.00% 32 0 100.00% 40 16 60.00%
// FILE-NEXT: branch-macros.cpp 28 5 82.14% 3 0 100.00% 39 0 100.00% 40 16 60.00%
// FILE-NEXT: ---
// FILE-NEXT: TOTAL 16 4 75.00% 3 0 100.00% 32 0 100.00% 40 16 60.00%
// FILE-NEXT: TOTAL 28 5 82.14% 3 0 100.00% 39 0 100.00% 40 16 60.00%
4 changes: 2 additions & 2 deletions llvm/test/tools/llvm-cov/branch-templates.test
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Expand Up @@ -26,6 +26,6 @@

// 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: branch-templates.cpp 12 2 83.33% 2 0 100.00% 17 3 82.35% 12 6 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 2 83.33% 2 0 100.00% 17 3 82.35% 12 6 50.00%
22 changes: 11 additions & 11 deletions llvm/test/tools/llvm-cov/coverage_watermark.test
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Expand Up @@ -18,15 +18,15 @@ ORIGIN: <td class='column-entry-green'>
ORIGIN: 100.00% (2/2)
ORIGIN: <td class='column-entry-green'>
ORIGIN: 100.00% (3/3)
ORIGIN: <td class='column-entry-red'>
ORIGIN: 75.00% (9/12)
ORIGIN: <td class='column-entry-red'>
ORIGIN: 66.67% (4/6)
ORIGIN: <td class='column-entry-yellow'>
ORIGIN: 83.33% (10/12)
ORIGIN: <td class='column-entry-yellow'>
ORIGIN: 83.33% (5/6)
ORIGIN: <td class='column-entry-gray'>
ORIGIN: - (0/0)
ORIGIN: </tr>

RUN: llvm-cov show %S/Inputs/templateInstantiations.covmapping -instr-profile %S/Inputs/templateInstantiations.profdata -format html -show-region-summary -show-instantiation-summary -o %t.html.dir -path-equivalence=/tmp,%S -coverage-watermark 80,70 %S/showTemplateInstantiations.cpp
RUN: llvm-cov show %S/Inputs/templateInstantiations.covmapping -instr-profile %S/Inputs/templateInstantiations.profdata -format html -show-region-summary -show-instantiation-summary -o %t.html.dir -path-equivalence=/tmp,%S -coverage-watermark 90,70 %S/showTemplateInstantiations.cpp
RUN: FileCheck -check-prefix=DOWNGRADE1 %s -input-file %t.html.dir/index.html

DOWNGRADE:1 Totals
Expand All @@ -35,9 +35,9 @@ DOWNGRADE1: 100.00% (2/2)
DOWNGRADE1: <td class='column-entry-green'>
DOWNGRADE1: 100.00% (3/3)
DOWNGRADE1: <td class='column-entry-yellow'>
DOWNGRADE1: 75.00% (9/12)
DOWNGRADE1: <td class='column-entry-red'>
DOWNGRADE1: 66.67% (4/6)
DOWNGRADE1: 83.33% (10/12)
DOWNGRADE1: <td class='column-entry-yellow'>
DOWNGRADE1: 83.33% (5/6)
DOWNGRADE1: <td class='column-entry-gray'>
DOWNGRADE1: - (0/0)
DOWNGRADE1: </tr>
Expand All @@ -51,9 +51,9 @@ DOWNGRADE2: 100.00% (2/2)
DOWNGRADE2: <td class='column-entry-green'>
DOWNGRADE2: 100.00% (3/3)
DOWNGRADE2: <td class='column-entry-green'>
DOWNGRADE2: 75.00% (9/12)
DOWNGRADE2: <td class='column-entry-yellow'>
DOWNGRADE2: 66.67% (4/6)
DOWNGRADE2: 83.33% (10/12)
DOWNGRADE2: <td class='column-entry-green'>
DOWNGRADE2: 83.33% (5/6)
DOWNGRADE1: <td class='column-entry-gray'>
DOWNGRADE1: - (0/0)
DOWNGRADE1: </tr>
4 changes: 2 additions & 2 deletions llvm/test/tools/llvm-cov/mcdc-templates-merge.test
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Expand Up @@ -19,9 +19,9 @@ CHECK: 3 0 100.00%
CHECK: 19 1 94.74%

# Branches
CHECK: 11 3 72.73%
CHECK: 24 9 62.50%

# MC/DC Conditions
CHECK: 4 2 50.00%
CHECK: 10 7 30.00%

REPORT: TOTAL
3 changes: 1 addition & 2 deletions llvm/test/tools/llvm-cov/zeroFunctionFile.c
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Expand Up @@ -16,5 +16,4 @@ int main() {
// RUN: llvm-cov show -j 1 %S/Inputs/zeroFunctionFile.covmapping -format html -instr-profile %t.profdata -o %t.dir
// RUN: FileCheck %s -input-file=%t.dir/index.html -check-prefix=HTML
// HTML-NO: 0.00% (0/0)
// HTML: Files which contain no functions
// HTML: zeroFunctionFile.h
// HTML-NOT: Files which contain no functions
42 changes: 31 additions & 11 deletions llvm/tools/llvm-cov/CoverageReport.cpp
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Expand Up @@ -446,27 +446,47 @@ void CoverageReport::prepareSingleFileReport(const StringRef Filename,
const coverage::CoverageMapping *Coverage,
const CoverageViewOptions &Options, const unsigned LCP,
FileCoverageSummary *FileReport, const CoverageFilter *Filters) {
DenseSet<const coverage::FunctionRecord *> FilteredOutFunctions;
assert(FileReport->empty());
for (const auto &Group : Coverage->getInstantiationGroups(Filename)) {
std::vector<FunctionCoverageSummary> InstantiationSummaries;
bool Updated = false;
for (const coverage::FunctionRecord *F : Group.getInstantiations()) {
if (!Filters->matches(*Coverage, *F))
if (!Filters->matches(*Coverage, *F)) {
FilteredOutFunctions.insert(F);
continue;
auto InstantiationSummary = FunctionCoverageSummary::get(*Coverage, *F);
FileReport->addInstantiation(InstantiationSummary);
InstantiationSummaries.push_back(InstantiationSummary);
}
FileReport->InstantiationCoverage.addFunction(
/*Covered=*/F->ExecutionCount > 0);
Updated = true;
}
if (InstantiationSummaries.empty())
if (!Updated)
continue;

auto GroupSummary =
FunctionCoverageSummary::get(Group, InstantiationSummaries);
if (Options.Debug) {
std::string Name;
if (Group.hasName()) {
Name = std::string(Group.getName());
} else {
llvm::raw_string_ostream OS(Name);
OS << "Definition at line " << Group.getLine() << ", column "
<< Group.getColumn();
}

if (Options.Debug)
outs() << "InstantiationGroup: " << GroupSummary.Name << " with "
outs() << "InstantiationGroup: " << Name << " with "
<< "size = " << Group.size() << "\n";
}

FileReport->addFunction(GroupSummary);
FileReport->FunctionCoverage.addFunction(
/*Covered=*/Group.getTotalExecutionCount() > 0);
}

auto FileCoverage =
Coverage->getCoverageForFile(Filename, FilteredOutFunctions);
if (FileCoverage.empty())
return;

*static_cast<CoverageDataSummary *>(FileReport) +=
CoverageDataSummary(FileCoverage);
}

std::vector<FileCoverageSummary> CoverageReport::prepareFileReports(
Expand Down
26 changes: 0 additions & 26 deletions llvm/tools/llvm-cov/CoverageSummaryInfo.cpp
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Expand Up @@ -110,29 +110,3 @@ FunctionCoverageSummary::get(const CoverageMapping &CM,

return Summary;
}

FunctionCoverageSummary
FunctionCoverageSummary::get(const InstantiationGroup &Group,
ArrayRef<FunctionCoverageSummary> Summaries) {
std::string Name;
if (Group.hasName()) {
Name = std::string(Group.getName());
} else {
llvm::raw_string_ostream OS(Name);
OS << "Definition at line " << Group.getLine() << ", column "
<< Group.getColumn();
}

FunctionCoverageSummary Summary(Name, Group.getTotalExecutionCount());
Summary.RegionCoverage = Summaries[0].RegionCoverage;
Summary.LineCoverage = Summaries[0].LineCoverage;
Summary.BranchCoverage = Summaries[0].BranchCoverage;
Summary.MCDCCoverage = Summaries[0].MCDCCoverage;
for (const auto &FCS : Summaries.drop_front()) {
Summary.RegionCoverage.merge(FCS.RegionCoverage);
Summary.LineCoverage.merge(FCS.LineCoverage);
Summary.BranchCoverage.merge(FCS.BranchCoverage);
Summary.MCDCCoverage.merge(FCS.MCDCCoverage);
}
return Summary;
}
51 changes: 13 additions & 38 deletions llvm/tools/llvm-cov/CoverageSummaryInfo.h
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Expand Up @@ -41,11 +41,6 @@ class RegionCoverageInfo {
return *this;
}

void merge(const RegionCoverageInfo &RHS) {
Covered = std::max(Covered, RHS.Covered);
NumRegions = std::max(NumRegions, RHS.NumRegions);
}

size_t getCovered() const { return Covered; }

size_t getNumRegions() const { return NumRegions; }
Expand Down Expand Up @@ -82,11 +77,6 @@ class LineCoverageInfo {
return *this;
}

void merge(const LineCoverageInfo &RHS) {
Covered = std::max(Covered, RHS.Covered);
NumLines = std::max(NumLines, RHS.NumLines);
}

size_t getCovered() const { return Covered; }

size_t getNumLines() const { return NumLines; }
Expand Down Expand Up @@ -123,11 +113,6 @@ class BranchCoverageInfo {
return *this;
}

void merge(const BranchCoverageInfo &RHS) {
Covered = std::max(Covered, RHS.Covered);
NumBranches = std::max(NumBranches, RHS.NumBranches);
}

size_t getCovered() const { return Covered; }

size_t getNumBranches() const { return NumBranches; }
Expand Down Expand Up @@ -164,11 +149,6 @@ class MCDCCoverageInfo {
return *this;
}

void merge(const MCDCCoverageInfo &RHS) {
CoveredPairs = std::max(CoveredPairs, RHS.CoveredPairs);
NumPairs = std::max(NumPairs, RHS.NumPairs);
}

size_t getCoveredPairs() const { return CoveredPairs; }

size_t getNumPairs() const { return NumPairs; }
Expand Down Expand Up @@ -232,6 +212,13 @@ struct CoverageDataSummary {
CoverageDataSummary() = default;
CoverageDataSummary(const coverage::CoverageData &CD);

bool empty() const {
return (RegionCoverage.getNumRegions() == 0 &&
LineCoverage.getNumLines() == 0 &&
BranchCoverage.getNumBranches() == 0 &&
MCDCCoverage.getNumPairs() == 0);
}

auto &operator+=(const CoverageDataSummary &RHS) {
RegionCoverage += RHS.RegionCoverage;
LineCoverage += RHS.LineCoverage;
Expand All @@ -253,12 +240,6 @@ struct FunctionCoverageSummary : CoverageDataSummary {
/// mapping record.
static FunctionCoverageSummary get(const coverage::CoverageMapping &CM,
const coverage::FunctionRecord &Function);

/// Compute the code coverage summary for an instantiation group \p Group,
/// given a list of summaries for each instantiation in \p Summaries.
static FunctionCoverageSummary
get(const coverage::InstantiationGroup &Group,
ArrayRef<FunctionCoverageSummary> Summaries);
};

/// A summary of file's code coverage.
Expand All @@ -270,24 +251,18 @@ struct FileCoverageSummary : CoverageDataSummary {
FileCoverageSummary() = default;
FileCoverageSummary(StringRef Name) : Name(Name) {}

bool empty() const {
return (CoverageDataSummary::empty() &&
FunctionCoverage.getNumFunctions() == 0 &&
InstantiationCoverage.getNumFunctions() == 0);
}

FileCoverageSummary &operator+=(const FileCoverageSummary &RHS) {
*static_cast<CoverageDataSummary *>(this) += RHS;
FunctionCoverage += RHS.FunctionCoverage;
InstantiationCoverage += RHS.InstantiationCoverage;
return *this;
}

void addFunction(const FunctionCoverageSummary &Function) {
RegionCoverage += Function.RegionCoverage;
LineCoverage += Function.LineCoverage;
BranchCoverage += Function.BranchCoverage;
MCDCCoverage += Function.MCDCCoverage;
FunctionCoverage.addFunction(/*Covered=*/Function.ExecutionCount > 0);
}

void addInstantiation(const FunctionCoverageSummary &Function) {
InstantiationCoverage.addFunction(/*Covered=*/Function.ExecutionCount > 0);
}
};

/// A cache for demangled symbols.
Expand Down
16 changes: 13 additions & 3 deletions llvm/tools/llvm-cov/SourceCoverageViewHTML.cpp
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Expand Up @@ -23,6 +23,16 @@ using namespace llvm;

namespace {

template <class SummaryTy>
bool isSummaryEmpty(const SummaryTy &Report, const CoverageViewOptions &Opts) {
return !(Report.FunctionCoverage.getNumFunctions() ||
(Opts.ShowInstantiationSummary &&
Report.InstantiationCoverage.getNumFunctions()) ||
(Opts.ShowRegionSummary && Report.RegionCoverage.getNumRegions()) ||
(Opts.ShowBranchSummary && Report.BranchCoverage.getNumBranches()) ||
(Opts.ShowMCDCSummary && Report.MCDCCoverage.getNumPairs()));
}

// Return a string with the special characters in \p Str escaped.
std::string escape(StringRef Str, const CoverageViewOptions &Opts) {
std::string TabExpandedResult;
Expand Down Expand Up @@ -666,7 +676,7 @@ Error CoveragePrinterHTML::createIndexFile(
Coverage, Totals, SourceFiles, Opts, Filters);
bool EmptyFiles = false;
for (unsigned I = 0, E = FileReports.size(); I < E; ++I) {
if (FileReports[I].FunctionCoverage.getNumFunctions())
if (!isSummaryEmpty(FileReports[I], Opts))
emitFileSummary(OSRef, SourceFiles[I], FileReports[I]);
else
EmptyFiles = true;
Expand Down Expand Up @@ -734,7 +744,7 @@ struct CoveragePrinterHTMLDirectory::Reporter : public DirectoryCoverageReport {
// Make directories at the top of the table.
for (auto &&SubDir : SubDirs) {
auto &Report = SubDir.second.first;
if (!Report.FunctionCoverage.getNumFunctions())
if (isSummaryEmpty(Report, Printer.Opts))
EmptyFiles.push_back(&Report);
else
emitTableRow(OSRef, Options, buildRelLinkToFile(Report.Name), Report,
Expand All @@ -743,7 +753,7 @@ struct CoveragePrinterHTMLDirectory::Reporter : public DirectoryCoverageReport {

for (auto &&SubFile : SubFiles) {
auto &Report = SubFile.second;
if (!Report.FunctionCoverage.getNumFunctions())
if (isSummaryEmpty(Report, Printer.Opts))
EmptyFiles.push_back(&Report);
else
emitTableRow(OSRef, Options, buildRelLinkToFile(Report.Name), Report,
Expand Down
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