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llvm-project/llvm/unittests/ProfileData/CoverageMappingTest.cpp

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//===- unittest/ProfileData/CoverageMappingTest.cpp -------------------------=//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/ProfileData/Coverage/CoverageMapping.h"
#include "llvm/ProfileData/Coverage/CoverageMappingReader.h"
#include "llvm/ProfileData/Coverage/CoverageMappingWriter.h"
#include "llvm/ProfileData/InstrProfReader.h"
#include "llvm/ProfileData/InstrProfWriter.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Testing/Support/Error.h"
#include "llvm/Testing/Support/SupportHelpers.h"
#include "gtest/gtest.h"
#include <ostream>
#include <utility>
using namespace llvm;
using namespace coverage;
LLVM_NODISCARD static ::testing::AssertionResult
ErrorEquals(coveragemap_error Expected, Error E) {
coveragemap_error Found;
std::string FoundMsg;
handleAllErrors(std::move(E), [&](const CoverageMapError &CME) {
Found = CME.get();
FoundMsg = CME.message();
});
if (Expected == Found)
return ::testing::AssertionSuccess();
return ::testing::AssertionFailure() << "error: " << FoundMsg << "\n";
}
namespace llvm {
namespace coverage {
void PrintTo(const Counter &C, ::std::ostream *os) {
if (C.isZero())
*os << "Zero";
else if (C.isExpression())
*os << "Expression " << C.getExpressionID();
else
*os << "Counter " << C.getCounterID();
}
void PrintTo(const CoverageSegment &S, ::std::ostream *os) {
*os << "CoverageSegment(" << S.Line << ", " << S.Col << ", ";
if (S.HasCount)
*os << S.Count << ", ";
*os << (S.IsRegionEntry ? "true" : "false") << ")";
}
}
}
namespace {
struct OutputFunctionCoverageData {
StringRef Name;
uint64_t Hash;
std::vector<StringRef> Filenames;
std::vector<CounterMappingRegion> Regions;
OutputFunctionCoverageData() : Hash(0) {}
OutputFunctionCoverageData(OutputFunctionCoverageData &&OFCD)
: Name(OFCD.Name), Hash(OFCD.Hash), Filenames(std::move(OFCD.Filenames)),
Regions(std::move(OFCD.Regions)) {}
OutputFunctionCoverageData(const OutputFunctionCoverageData &) = delete;
OutputFunctionCoverageData &
operator=(const OutputFunctionCoverageData &) = delete;
OutputFunctionCoverageData &operator=(OutputFunctionCoverageData &&) = delete;
void fillCoverageMappingRecord(CoverageMappingRecord &Record) const {
Record.FunctionName = Name;
Record.FunctionHash = Hash;
Record.Filenames = Filenames;
Record.Expressions = {};
Record.MappingRegions = Regions;
}
};
struct CoverageMappingReaderMock : CoverageMappingReader {
ArrayRef<OutputFunctionCoverageData> Functions;
CoverageMappingReaderMock(ArrayRef<OutputFunctionCoverageData> Functions)
: Functions(Functions) {}
Error readNextRecord(CoverageMappingRecord &Record) override {
if (Functions.empty())
return make_error<CoverageMapError>(coveragemap_error::eof);
Functions.front().fillCoverageMappingRecord(Record);
Functions = Functions.slice(1);
return Error::success();
}
};
struct InputFunctionCoverageData {
// Maps the global file index from CoverageMappingTest.Files
// to the index of that file within this function. We can't just use
// global file indexes here because local indexes have to be dense.
// This map is used during serialization to create the virtual file mapping
// (from local fileId to global Index) in the head of the per-function
// coverage mapping data.
SmallDenseMap<unsigned, unsigned> ReverseVirtualFileMapping;
std::string Name;
uint64_t Hash;
std::vector<CounterMappingRegion> Regions;
InputFunctionCoverageData(std::string Name, uint64_t Hash)
: Name(std::move(Name)), Hash(Hash) {}
InputFunctionCoverageData(InputFunctionCoverageData &&IFCD)
: ReverseVirtualFileMapping(std::move(IFCD.ReverseVirtualFileMapping)),
Name(std::move(IFCD.Name)), Hash(IFCD.Hash),
Regions(std::move(IFCD.Regions)) {}
InputFunctionCoverageData(const InputFunctionCoverageData &) = delete;
InputFunctionCoverageData &
operator=(const InputFunctionCoverageData &) = delete;
InputFunctionCoverageData &operator=(InputFunctionCoverageData &&) = delete;
};
struct CoverageMappingTest : ::testing::TestWithParam<std::pair<bool, bool>> {
bool UseMultipleReaders;
StringMap<unsigned> Files;
std::vector<InputFunctionCoverageData> InputFunctions;
std::vector<OutputFunctionCoverageData> OutputFunctions;
InstrProfWriter ProfileWriter;
std::unique_ptr<IndexedInstrProfReader> ProfileReader;
std::unique_ptr<CoverageMapping> LoadedCoverage;
void SetUp() override {
ProfileWriter.setOutputSparse(GetParam().first);
UseMultipleReaders = GetParam().second;
}
unsigned getGlobalFileIndex(StringRef Name) {
auto R = Files.find(Name);
if (R != Files.end())
return R->second;
unsigned Index = Files.size();
Files.try_emplace(Name, Index);
return Index;
}
// Return the file index of file 'Name' for the current function.
// Add the file into the global map if necessary.
// See also InputFunctionCoverageData::ReverseVirtualFileMapping
// for additional comments.
unsigned getFileIndexForFunction(StringRef Name) {
unsigned GlobalIndex = getGlobalFileIndex(Name);
auto &CurrentFunctionFileMapping =
InputFunctions.back().ReverseVirtualFileMapping;
auto R = CurrentFunctionFileMapping.find(GlobalIndex);
if (R != CurrentFunctionFileMapping.end())
return R->second;
unsigned IndexInFunction = CurrentFunctionFileMapping.size();
CurrentFunctionFileMapping.insert(
std::make_pair(GlobalIndex, IndexInFunction));
return IndexInFunction;
}
void startFunction(StringRef FuncName, uint64_t Hash) {
InputFunctions.emplace_back(FuncName.str(), Hash);
}
void addCMR(Counter C, StringRef File, unsigned LS, unsigned CS, unsigned LE,
unsigned CE, bool Skipped = false) {
auto &Regions = InputFunctions.back().Regions;
unsigned FileID = getFileIndexForFunction(File);
Regions.push_back(
Skipped ? CounterMappingRegion::makeSkipped(FileID, LS, CS, LE, CE)
: CounterMappingRegion::makeRegion(C, FileID, LS, CS, LE, CE));
}
void addExpansionCMR(StringRef File, StringRef ExpandedFile, unsigned LS,
unsigned CS, unsigned LE, unsigned CE) {
InputFunctions.back().Regions.push_back(CounterMappingRegion::makeExpansion(
getFileIndexForFunction(File), getFileIndexForFunction(ExpandedFile),
LS, CS, LE, CE));
}
std::string writeCoverageRegions(InputFunctionCoverageData &Data) {
SmallVector<unsigned, 8> FileIDs(Data.ReverseVirtualFileMapping.size());
for (const auto &E : Data.ReverseVirtualFileMapping)
FileIDs[E.second] = E.first;
std::string Coverage;
llvm::raw_string_ostream OS(Coverage);
CoverageMappingWriter(FileIDs, None, Data.Regions).write(OS);
return OS.str();
}
void readCoverageRegions(const std::string &Coverage,
OutputFunctionCoverageData &Data) {
SmallVector<StringRef, 8> Filenames(Files.size());
for (const auto &E : Files)
Filenames[E.getValue()] = E.getKey();
std::vector<CounterExpression> Expressions;
RawCoverageMappingReader Reader(Coverage, Filenames, Data.Filenames,
Expressions, Data.Regions);
EXPECT_THAT_ERROR(Reader.read(), Succeeded());
}
void writeAndReadCoverageRegions(bool EmitFilenames = true) {
OutputFunctions.resize(InputFunctions.size());
for (unsigned I = 0; I < InputFunctions.size(); ++I) {
std::string Regions = writeCoverageRegions(InputFunctions[I]);
readCoverageRegions(Regions, OutputFunctions[I]);
OutputFunctions[I].Name = InputFunctions[I].Name;
OutputFunctions[I].Hash = InputFunctions[I].Hash;
if (!EmitFilenames)
OutputFunctions[I].Filenames.clear();
}
}
void readProfCounts() {
auto Profile = ProfileWriter.writeBuffer();
auto ReaderOrErr = IndexedInstrProfReader::create(std::move(Profile));
EXPECT_THAT_ERROR(ReaderOrErr.takeError(), Succeeded());
ProfileReader = std::move(ReaderOrErr.get());
}
Expected<std::unique_ptr<CoverageMapping>> readOutputFunctions() {
std::vector<std::unique_ptr<CoverageMappingReader>> CoverageReaders;
if (UseMultipleReaders) {
for (const auto &OF : OutputFunctions) {
ArrayRef<OutputFunctionCoverageData> Funcs(OF);
CoverageReaders.push_back(
std::make_unique<CoverageMappingReaderMock>(Funcs));
}
} else {
ArrayRef<OutputFunctionCoverageData> Funcs(OutputFunctions);
CoverageReaders.push_back(
std::make_unique<CoverageMappingReaderMock>(Funcs));
}
return CoverageMapping::load(CoverageReaders, *ProfileReader);
}
Error loadCoverageMapping(bool EmitFilenames = true) {
readProfCounts();
writeAndReadCoverageRegions(EmitFilenames);
auto CoverageOrErr = readOutputFunctions();
if (!CoverageOrErr)
return CoverageOrErr.takeError();
LoadedCoverage = std::move(CoverageOrErr.get());
return Error::success();
}
};
TEST_P(CoverageMappingTest, basic_write_read) {
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "foo", 1, 1, 1, 1);
addCMR(Counter::getCounter(1), "foo", 2, 1, 2, 2);
addCMR(Counter::getZero(), "foo", 3, 1, 3, 4);
addCMR(Counter::getCounter(2), "foo", 4, 1, 4, 8);
addCMR(Counter::getCounter(3), "bar", 1, 2, 3, 4);
writeAndReadCoverageRegions();
ASSERT_EQ(1u, InputFunctions.size());
ASSERT_EQ(1u, OutputFunctions.size());
InputFunctionCoverageData &Input = InputFunctions.back();
OutputFunctionCoverageData &Output = OutputFunctions.back();
size_t N = makeArrayRef(Input.Regions).size();
ASSERT_EQ(N, Output.Regions.size());
for (size_t I = 0; I < N; ++I) {
ASSERT_EQ(Input.Regions[I].Count, Output.Regions[I].Count);
ASSERT_EQ(Input.Regions[I].FileID, Output.Regions[I].FileID);
ASSERT_EQ(Input.Regions[I].startLoc(), Output.Regions[I].startLoc());
ASSERT_EQ(Input.Regions[I].endLoc(), Output.Regions[I].endLoc());
ASSERT_EQ(Input.Regions[I].Kind, Output.Regions[I].Kind);
}
}
TEST_P(CoverageMappingTest, correct_deserialize_for_more_than_two_files) {
const char *FileNames[] = {"bar", "baz", "foo"};
static const unsigned N = array_lengthof(FileNames);
startFunction("func", 0x1234);
for (unsigned I = 0; I < N; ++I)
// Use LineStart to hold the index of the file name
// in order to preserve that information during possible sorting of CMRs.
addCMR(Counter::getCounter(0), FileNames[I], I, 1, I, 1);
writeAndReadCoverageRegions();
ASSERT_EQ(1u, OutputFunctions.size());
OutputFunctionCoverageData &Output = OutputFunctions.back();
ASSERT_EQ(N, Output.Regions.size());
ASSERT_EQ(N, Output.Filenames.size());
for (unsigned I = 0; I < N; ++I) {
ASSERT_GT(N, Output.Regions[I].FileID);
ASSERT_GT(N, Output.Regions[I].LineStart);
EXPECT_EQ(FileNames[Output.Regions[I].LineStart],
Output.Filenames[Output.Regions[I].FileID]);
}
}
static const auto Err = [](Error E) { FAIL(); };
TEST_P(CoverageMappingTest, load_coverage_for_more_than_two_files) {
ProfileWriter.addRecord({"func", 0x1234, {0}}, Err);
const char *FileNames[] = {"bar", "baz", "foo"};
static const unsigned N = array_lengthof(FileNames);
startFunction("func", 0x1234);
for (unsigned I = 0; I < N; ++I)
// Use LineStart to hold the index of the file name
// in order to preserve that information during possible sorting of CMRs.
addCMR(Counter::getCounter(0), FileNames[I], I, 1, I, 1);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
for (unsigned I = 0; I < N; ++I) {
CoverageData Data = LoadedCoverage->getCoverageForFile(FileNames[I]);
ASSERT_TRUE(!Data.empty());
EXPECT_EQ(I, Data.begin()->Line);
}
}
TEST_P(CoverageMappingTest, load_coverage_with_bogus_function_name) {
ProfileWriter.addRecord({"", 0x1234, {10}}, Err);
startFunction("", 0x1234);
addCMR(Counter::getCounter(0), "foo", 1, 1, 5, 5);
EXPECT_TRUE(ErrorEquals(coveragemap_error::malformed, loadCoverageMapping()));
}
TEST_P(CoverageMappingTest, load_coverage_for_several_functions) {
ProfileWriter.addRecord({"func1", 0x1234, {10}}, Err);
ProfileWriter.addRecord({"func2", 0x2345, {20}}, Err);
startFunction("func1", 0x1234);
addCMR(Counter::getCounter(0), "foo", 1, 1, 5, 5);
startFunction("func2", 0x2345);
addCMR(Counter::getCounter(0), "bar", 2, 2, 6, 6);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
EXPECT_EQ(2, std::distance(FunctionRecords.begin(), FunctionRecords.end()));
for (const auto &FunctionRecord : FunctionRecords) {
CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(2U, Segments.size());
if (FunctionRecord.Name == "func1") {
EXPECT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
EXPECT_EQ(CoverageSegment(5, 5, false), Segments[1]);
} else {
ASSERT_EQ("func2", FunctionRecord.Name);
EXPECT_EQ(CoverageSegment(2, 2, 20, true), Segments[0]);
EXPECT_EQ(CoverageSegment(6, 6, false), Segments[1]);
}
}
}
TEST_P(CoverageMappingTest, create_combined_regions) {
ProfileWriter.addRecord({"func1", 0x1234, {1, 2, 3}}, Err);
startFunction("func1", 0x1234);
// Given regions which start at the same location, emit a segment for the
// last region.
addCMR(Counter::getCounter(0), "file1", 1, 1, 2, 2);
addCMR(Counter::getCounter(1), "file1", 1, 1, 2, 2);
addCMR(Counter::getCounter(2), "file1", 1, 1, 2, 2);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
const auto &FunctionRecord = *FunctionRecords.begin();
CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(2U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 1, 6, true), Segments[0]);
EXPECT_EQ(CoverageSegment(2, 2, false), Segments[1]);
}
TEST_P(CoverageMappingTest, skipped_segments_have_no_count) {
ProfileWriter.addRecord({"func1", 0x1234, {1}}, Err);
startFunction("func1", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 5, 5);
addCMR(Counter::getCounter(0), "file1", 5, 1, 5, 5, /*Skipped=*/true);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
const auto &FunctionRecord = *FunctionRecords.begin();
CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(3U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 1, 1, true), Segments[0]);
EXPECT_EQ(CoverageSegment(5, 1, true), Segments[1]);
EXPECT_EQ(CoverageSegment(5, 5, false), Segments[2]);
}
TEST_P(CoverageMappingTest, multiple_regions_end_after_parent_ends) {
ProfileWriter.addRecord({"func1", 0x1234, {1, 0}}, Err);
startFunction("func1", 0x1234);
// 1| F{ a{
// 2|
// 3| a} b{ c{
// 4|
// 5| b}
// 6|
// 7| c} d{ e{
// 8|
// 9| d} e} F}
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9); // < F
addCMR(Counter::getCounter(0), "file1", 1, 1, 3, 5); // < a
addCMR(Counter::getCounter(0), "file1", 3, 5, 5, 4); // < b
addCMR(Counter::getCounter(1), "file1", 3, 5, 7, 3); // < c
addCMR(Counter::getCounter(1), "file1", 7, 3, 9, 2); // < d
addCMR(Counter::getCounter(1), "file1", 7, 7, 9, 7); // < e
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
const auto &FunctionRecord = *FunctionRecords.begin();
CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
// Old output (not sorted or unique):
// Segment at 1:1 with count 1
// Segment at 1:1 with count 1
// Segment at 3:5 with count 1
// Segment at 3:5 with count 0
// Segment at 3:5 with count 1
// Segment at 5:4 with count 0
// Segment at 7:3 with count 1
// Segment at 7:3 with count 0
// Segment at 7:7 with count 0
// Segment at 9:7 with count 0
// Segment at 9:2 with count 1
// Top level segment at 9:9
// New output (sorted and unique):
// Segment at 1:1 (count = 1), RegionEntry
// Segment at 3:5 (count = 1), RegionEntry
// Segment at 5:4 (count = 0)
// Segment at 7:3 (count = 0), RegionEntry
// Segment at 7:7 (count = 0), RegionEntry
// Segment at 9:2 (count = 0)
// Segment at 9:7 (count = 1)
// Segment at 9:9 (count = 0), Skipped
ASSERT_EQ(8U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 1, 1, true), Segments[0]);
EXPECT_EQ(CoverageSegment(3, 5, 1, true), Segments[1]);
EXPECT_EQ(CoverageSegment(5, 4, 0, false), Segments[2]);
EXPECT_EQ(CoverageSegment(7, 3, 0, true), Segments[3]);
EXPECT_EQ(CoverageSegment(7, 7, 0, true), Segments[4]);
EXPECT_EQ(CoverageSegment(9, 2, 0, false), Segments[5]);
EXPECT_EQ(CoverageSegment(9, 7, 1, false), Segments[6]);
EXPECT_EQ(CoverageSegment(9, 9, false), Segments[7]);
}
TEST_P(CoverageMappingTest, multiple_completed_segments_at_same_loc) {
ProfileWriter.addRecord({"func1", 0x1234, {0, 1, 2}}, Err);
startFunction("func1", 0x1234);
// PR35495
addCMR(Counter::getCounter(1), "file1", 2, 1, 18, 2);
addCMR(Counter::getCounter(0), "file1", 8, 10, 14, 6);
addCMR(Counter::getCounter(0), "file1", 8, 12, 14, 6);
addCMR(Counter::getCounter(1), "file1", 9, 1, 14, 6);
addCMR(Counter::getCounter(2), "file1", 11, 13, 11, 14);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
const auto &FunctionRecord = *FunctionRecords.begin();
CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(7U, Segments.size());
EXPECT_EQ(CoverageSegment(2, 1, 1, true), Segments[0]);
EXPECT_EQ(CoverageSegment(8, 10, 0, true), Segments[1]);
EXPECT_EQ(CoverageSegment(8, 12, 0, true), Segments[2]);
EXPECT_EQ(CoverageSegment(9, 1, 1, true), Segments[3]);
EXPECT_EQ(CoverageSegment(11, 13, 2, true), Segments[4]);
// Use count=1 (from 9:1 -> 14:6), not count=0 (from 8:12 -> 14:6).
EXPECT_EQ(CoverageSegment(11, 14, 1, false), Segments[5]);
EXPECT_EQ(CoverageSegment(18, 2, false), Segments[6]);
}
TEST_P(CoverageMappingTest, dont_emit_redundant_segments) {
ProfileWriter.addRecord({"func1", 0x1234, {1, 1}}, Err);
startFunction("func1", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 4, 4);
addCMR(Counter::getCounter(1), "file1", 2, 2, 5, 5);
addCMR(Counter::getCounter(0), "file1", 3, 3, 6, 6);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
const auto &FunctionRecord = *FunctionRecords.begin();
CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(5U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 1, 1, true), Segments[0]);
EXPECT_EQ(CoverageSegment(2, 2, 1, true), Segments[1]);
EXPECT_EQ(CoverageSegment(3, 3, 1, true), Segments[2]);
EXPECT_EQ(CoverageSegment(4, 4, 1, false), Segments[3]);
// A closing segment starting at 5:5 would be redundant: it would have the
// same count as the segment starting at 4:4, and has all the same metadata.
EXPECT_EQ(CoverageSegment(6, 6, false), Segments[4]);
}
TEST_P(CoverageMappingTest, dont_emit_closing_segment_at_new_region_start) {
ProfileWriter.addRecord({"func1", 0x1234, {1}}, Err);
startFunction("func1", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 6, 5);
addCMR(Counter::getCounter(0), "file1", 2, 2, 6, 5);
addCMR(Counter::getCounter(0), "file1", 3, 3, 6, 5);
addCMR(Counter::getCounter(0), "file1", 6, 5, 7, 7);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
const auto &FunctionRecord = *FunctionRecords.begin();
CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(5U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 1, 1, true), Segments[0]);
EXPECT_EQ(CoverageSegment(2, 2, 1, true), Segments[1]);
EXPECT_EQ(CoverageSegment(3, 3, 1, true), Segments[2]);
EXPECT_EQ(CoverageSegment(6, 5, 1, true), Segments[3]);
// The old segment builder would get this wrong by emitting multiple segments
// which start at 6:5 (a few of which were skipped segments). We should just
// get a segment for the region entry.
EXPECT_EQ(CoverageSegment(7, 7, false), Segments[4]);
}
TEST_P(CoverageMappingTest, handle_consecutive_regions_with_zero_length) {
ProfileWriter.addRecord({"func1", 0x1234, {1, 2}}, Err);
startFunction("func1", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 1, 1);
addCMR(Counter::getCounter(1), "file1", 1, 1, 1, 1);
addCMR(Counter::getCounter(0), "file1", 1, 1, 1, 1);
addCMR(Counter::getCounter(1), "file1", 1, 1, 1, 1);
addCMR(Counter::getCounter(0), "file1", 1, 1, 1, 1);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
const auto &FunctionRecord = *FunctionRecords.begin();
CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(1U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 1, true), Segments[0]);
// We need to get a skipped segment starting at 1:1. In this case there is
// also a region entry at 1:1.
}
TEST_P(CoverageMappingTest, handle_sandwiched_zero_length_region) {
ProfileWriter.addRecord({"func1", 0x1234, {2, 1}}, Err);
startFunction("func1", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 5, 4, 4);
addCMR(Counter::getCounter(1), "file1", 1, 9, 1, 50);
addCMR(Counter::getCounter(1), "file1", 2, 7, 2, 34);
addCMR(Counter::getCounter(1), "file1", 3, 5, 3, 21);
addCMR(Counter::getCounter(1), "file1", 3, 21, 3, 21);
addCMR(Counter::getCounter(1), "file1", 4, 12, 4, 17);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
const auto &FunctionRecord = *FunctionRecords.begin();
CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(10U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 5, 2, true), Segments[0]);
EXPECT_EQ(CoverageSegment(1, 9, 1, true), Segments[1]);
EXPECT_EQ(CoverageSegment(1, 50, 2, false), Segments[2]);
EXPECT_EQ(CoverageSegment(2, 7, 1, true), Segments[3]);
EXPECT_EQ(CoverageSegment(2, 34, 2, false), Segments[4]);
EXPECT_EQ(CoverageSegment(3, 5, 1, true), Segments[5]);
EXPECT_EQ(CoverageSegment(3, 21, 2, true), Segments[6]);
// Handle the zero-length region by creating a segment with its predecessor's
// count (i.e the count from 1:5 -> 4:4).
EXPECT_EQ(CoverageSegment(4, 4, false), Segments[7]);
// The area between 4:4 and 4:12 is skipped.
EXPECT_EQ(CoverageSegment(4, 12, 1, true), Segments[8]);
EXPECT_EQ(CoverageSegment(4, 17, false), Segments[9]);
}
TEST_P(CoverageMappingTest, handle_last_completed_region) {
ProfileWriter.addRecord({"func1", 0x1234, {1, 2, 3, 4}}, Err);
startFunction("func1", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 8, 8);
addCMR(Counter::getCounter(1), "file1", 2, 2, 5, 5);
addCMR(Counter::getCounter(2), "file1", 3, 3, 4, 4);
addCMR(Counter::getCounter(3), "file1", 6, 6, 7, 7);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
const auto &FunctionRecord = *FunctionRecords.begin();
CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(8U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 1, 1, true), Segments[0]);
EXPECT_EQ(CoverageSegment(2, 2, 2, true), Segments[1]);
EXPECT_EQ(CoverageSegment(3, 3, 3, true), Segments[2]);
EXPECT_EQ(CoverageSegment(4, 4, 2, false), Segments[3]);
EXPECT_EQ(CoverageSegment(5, 5, 1, false), Segments[4]);
EXPECT_EQ(CoverageSegment(6, 6, 4, true), Segments[5]);
EXPECT_EQ(CoverageSegment(7, 7, 1, false), Segments[6]);
EXPECT_EQ(CoverageSegment(8, 8, false), Segments[7]);
}
TEST_P(CoverageMappingTest, expansion_gets_first_counter) {
startFunction("func", 0x1234);
addCMR(Counter::getCounter(1), "foo", 10, 1, 10, 2);
// This starts earlier in "foo", so the expansion should get its counter.
addCMR(Counter::getCounter(2), "foo", 1, 1, 20, 1);
addExpansionCMR("bar", "foo", 3, 3, 3, 3);
writeAndReadCoverageRegions();
ASSERT_EQ(1u, OutputFunctions.size());
OutputFunctionCoverageData &Output = OutputFunctions.back();
ASSERT_EQ(CounterMappingRegion::ExpansionRegion, Output.Regions[2].Kind);
ASSERT_EQ(Counter::getCounter(2), Output.Regions[2].Count);
ASSERT_EQ(3U, Output.Regions[2].LineStart);
}
TEST_P(CoverageMappingTest, basic_coverage_iteration) {
ProfileWriter.addRecord({"func", 0x1234, {30, 20, 10, 0}}, Err);
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
addCMR(Counter::getCounter(1), "file1", 1, 1, 4, 7);
addCMR(Counter::getCounter(2), "file1", 5, 8, 9, 1);
addCMR(Counter::getCounter(3), "file1", 10, 10, 11, 11);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(7U, Segments.size());
ASSERT_EQ(CoverageSegment(1, 1, 20, true), Segments[0]);
ASSERT_EQ(CoverageSegment(4, 7, 30, false), Segments[1]);
ASSERT_EQ(CoverageSegment(5, 8, 10, true), Segments[2]);
ASSERT_EQ(CoverageSegment(9, 1, 30, false), Segments[3]);
ASSERT_EQ(CoverageSegment(9, 9, false), Segments[4]);
ASSERT_EQ(CoverageSegment(10, 10, 0, true), Segments[5]);
ASSERT_EQ(CoverageSegment(11, 11, false), Segments[6]);
}
TEST_P(CoverageMappingTest, test_line_coverage_iterator) {
ProfileWriter.addRecord({"func", 0x1234, {30, 20, 10, 0}}, Err);
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
addCMR(Counter::getCounter(1), "file1", 1, 1, 4, 7);
addCMR(Counter::getCounter(2), "file1", 5, 8, 9, 1);
addCMR(Counter::getCounter(3), "file1", 10, 10, 11, 11);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
unsigned Line = 0;
unsigned LineCounts[] = {20, 20, 20, 20, 30, 10, 10, 10, 10, 0, 0};
for (const auto &LCS : getLineCoverageStats(Data)) {
ASSERT_EQ(Line + 1, LCS.getLine());
errs() << "Line: " << Line + 1 << ", count = " << LCS.getExecutionCount() << "\n";
ASSERT_EQ(LineCounts[Line], LCS.getExecutionCount());
++Line;
}
ASSERT_EQ(11U, Line);
}
TEST_P(CoverageMappingTest, uncovered_function) {
startFunction("func", 0x1234);
addCMR(Counter::getZero(), "file1", 1, 2, 3, 4);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(2U, Segments.size());
ASSERT_EQ(CoverageSegment(1, 2, 0, true), Segments[0]);
ASSERT_EQ(CoverageSegment(3, 4, false), Segments[1]);
}
TEST_P(CoverageMappingTest, uncovered_function_with_mapping) {
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
addCMR(Counter::getCounter(1), "file1", 1, 1, 4, 7);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(3U, Segments.size());
ASSERT_EQ(CoverageSegment(1, 1, 0, true), Segments[0]);
ASSERT_EQ(CoverageSegment(4, 7, 0, false), Segments[1]);
ASSERT_EQ(CoverageSegment(9, 9, false), Segments[2]);
}
TEST_P(CoverageMappingTest, combine_regions) {
ProfileWriter.addRecord({"func", 0x1234, {10, 20, 30}}, Err);
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
addCMR(Counter::getCounter(1), "file1", 3, 3, 4, 4);
addCMR(Counter::getCounter(2), "file1", 3, 3, 4, 4);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(4U, Segments.size());
ASSERT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
ASSERT_EQ(CoverageSegment(3, 3, 50, true), Segments[1]);
ASSERT_EQ(CoverageSegment(4, 4, 10, false), Segments[2]);
ASSERT_EQ(CoverageSegment(9, 9, false), Segments[3]);
}
TEST_P(CoverageMappingTest, restore_combined_counter_after_nested_region) {
ProfileWriter.addRecord({"func", 0x1234, {10, 20, 40}}, Err);
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
addCMR(Counter::getCounter(1), "file1", 1, 1, 9, 9);
addCMR(Counter::getCounter(2), "file1", 3, 3, 5, 5);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(4U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 1, 30, true), Segments[0]);
EXPECT_EQ(CoverageSegment(3, 3, 40, true), Segments[1]);
EXPECT_EQ(CoverageSegment(5, 5, 30, false), Segments[2]);
EXPECT_EQ(CoverageSegment(9, 9, false), Segments[3]);
}
// If CodeRegions and ExpansionRegions cover the same area,
// only counts of CodeRegions should be used.
TEST_P(CoverageMappingTest, dont_combine_expansions) {
ProfileWriter.addRecord({"func", 0x1234, {10, 20}}, Err);
ProfileWriter.addRecord({"func", 0x1234, {0, 0}}, Err);
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
addCMR(Counter::getCounter(1), "file1", 3, 3, 4, 4);
addCMR(Counter::getCounter(1), "include1", 6, 6, 7, 7);
addExpansionCMR("file1", "include1", 3, 3, 4, 4);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(4U, Segments.size());
ASSERT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
ASSERT_EQ(CoverageSegment(3, 3, 20, true), Segments[1]);
ASSERT_EQ(CoverageSegment(4, 4, 10, false), Segments[2]);
ASSERT_EQ(CoverageSegment(9, 9, false), Segments[3]);
}
// If an area is covered only by ExpansionRegions, they should be combinated.
TEST_P(CoverageMappingTest, combine_expansions) {
ProfileWriter.addRecord({"func", 0x1234, {2, 3, 7}}, Err);
startFunction("func", 0x1234);
addCMR(Counter::getCounter(1), "include1", 1, 1, 1, 10);
addCMR(Counter::getCounter(2), "include2", 1, 1, 1, 10);
addCMR(Counter::getCounter(0), "file", 1, 1, 5, 5);
addExpansionCMR("file", "include1", 3, 1, 3, 5);
addExpansionCMR("file", "include2", 3, 1, 3, 5);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
CoverageData Data = LoadedCoverage->getCoverageForFile("file");
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(4U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 1, 2, true), Segments[0]);
EXPECT_EQ(CoverageSegment(3, 1, 10, true), Segments[1]);
EXPECT_EQ(CoverageSegment(3, 5, 2, false), Segments[2]);
EXPECT_EQ(CoverageSegment(5, 5, false), Segments[3]);
}
TEST_P(CoverageMappingTest, strip_filename_prefix) {
ProfileWriter.addRecord({"file1:func", 0x1234, {0}}, Err);
startFunction("file1:func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
std::vector<std::string> Names;
for (const auto &Func : LoadedCoverage->getCoveredFunctions())
Names.push_back(Func.Name);
ASSERT_EQ(1U, Names.size());
ASSERT_EQ("func", Names[0]);
}
TEST_P(CoverageMappingTest, strip_unknown_filename_prefix) {
ProfileWriter.addRecord({"<unknown>:func", 0x1234, {0}}, Err);
startFunction("<unknown>:func", 0x1234);
addCMR(Counter::getCounter(0), "", 1, 1, 9, 9);
EXPECT_THAT_ERROR(loadCoverageMapping(/*EmitFilenames=*/false), Succeeded());
std::vector<std::string> Names;
for (const auto &Func : LoadedCoverage->getCoveredFunctions())
Names.push_back(Func.Name);
ASSERT_EQ(1U, Names.size());
ASSERT_EQ("func", Names[0]);
}
TEST_P(CoverageMappingTest, dont_detect_false_instantiations) {
ProfileWriter.addRecord({"foo", 0x1234, {10}}, Err);
ProfileWriter.addRecord({"bar", 0x2345, {20}}, Err);
startFunction("foo", 0x1234);
addCMR(Counter::getCounter(0), "expanded", 1, 1, 1, 10);
addExpansionCMR("main", "expanded", 4, 1, 4, 5);
startFunction("bar", 0x2345);
addCMR(Counter::getCounter(0), "expanded", 1, 1, 1, 10);
addExpansionCMR("main", "expanded", 9, 1, 9, 5);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
std::vector<InstantiationGroup> InstantiationGroups =
LoadedCoverage->getInstantiationGroups("expanded");
for (const auto &Group : InstantiationGroups)
ASSERT_EQ(Group.size(), 1U);
}
TEST_P(CoverageMappingTest, load_coverage_for_expanded_file) {
ProfileWriter.addRecord({"func", 0x1234, {10}}, Err);
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "expanded", 1, 1, 1, 10);
addExpansionCMR("main", "expanded", 4, 1, 4, 5);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
CoverageData Data = LoadedCoverage->getCoverageForFile("expanded");
std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
ASSERT_EQ(2U, Segments.size());
EXPECT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
EXPECT_EQ(CoverageSegment(1, 10, false), Segments[1]);
}
TEST_P(CoverageMappingTest, skip_duplicate_function_record) {
ProfileWriter.addRecord({"func", 0x1234, {1}}, Err);
// This record should be loaded.
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
// This record should be loaded.
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
addCMR(Counter::getCounter(0), "file2", 1, 1, 9, 9);
// This record should be skipped.
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
// This record should be loaded.
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file2", 1, 1, 9, 9);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
// This record should be skipped.
startFunction("func", 0x1234);
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
addCMR(Counter::getCounter(0), "file2", 1, 1, 9, 9);
EXPECT_THAT_ERROR(loadCoverageMapping(), Succeeded());
auto Funcs = LoadedCoverage->getCoveredFunctions();
unsigned NumFuncs = std::distance(Funcs.begin(), Funcs.end());
ASSERT_EQ(3U, NumFuncs);
}
// FIXME: Use ::testing::Combine() when llvm updates its copy of googletest.
INSTANTIATE_TEST_CASE_P(ParameterizedCovMapTest, CoverageMappingTest,
::testing::Values(std::pair<bool, bool>({false, false}),
std::pair<bool, bool>({false, true}),
std::pair<bool, bool>({true, false}),
std::pair<bool, bool>({true, true})),);
TEST(CoverageMappingTest, filename_roundtrip) {
std::vector<StringRef> Paths({"a", "b", "c", "d", "e"});
for (bool Compress : {false, true}) {
std::string EncodedFilenames;
{
raw_string_ostream OS(EncodedFilenames);
CoverageFilenamesSectionWriter Writer(Paths);
Writer.write(OS, Compress);
}
std::vector<StringRef> ReadFilenames;
RawCoverageFilenamesReader Reader(EncodedFilenames, ReadFilenames);
BinaryCoverageReader::DecompressedData Decompressed;
EXPECT_THAT_ERROR(Reader.read(CovMapVersion::CurrentVersion, Decompressed),
Succeeded());
if (!Compress)
ASSERT_EQ(Decompressed.size(), 0U);
ASSERT_EQ(ReadFilenames.size(), Paths.size());
for (unsigned I = 0; I < Paths.size(); ++I)
ASSERT_TRUE(ReadFilenames[I] == Paths[I]);
}
}
} // end anonymous namespace
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