forked from OSchip/llvm-project
544 lines
20 KiB
C++
544 lines
20 KiB
C++
//===- unittest/ProfileData/CoverageMappingTest.cpp -------------------------=//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ProfileData/Coverage/CoverageMapping.h"
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#include "llvm/ProfileData/Coverage/CoverageMappingReader.h"
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#include "llvm/ProfileData/Coverage/CoverageMappingWriter.h"
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#include "llvm/ProfileData/InstrProfReader.h"
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#include "llvm/ProfileData/InstrProfWriter.h"
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#include "llvm/Support/raw_ostream.h"
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#include "gtest/gtest.h"
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#include <ostream>
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using namespace llvm;
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using namespace coverage;
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static ::testing::AssertionResult NoError(Error E) {
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if (!E)
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return ::testing::AssertionSuccess();
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return ::testing::AssertionFailure() << "error: " << toString(std::move(E))
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<< "\n";
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}
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namespace llvm {
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namespace coverage {
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void PrintTo(const Counter &C, ::std::ostream *os) {
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if (C.isZero())
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*os << "Zero";
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else if (C.isExpression())
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*os << "Expression " << C.getExpressionID();
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else
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*os << "Counter " << C.getCounterID();
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}
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void PrintTo(const CoverageSegment &S, ::std::ostream *os) {
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*os << "CoverageSegment(" << S.Line << ", " << S.Col << ", ";
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if (S.HasCount)
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*os << S.Count << ", ";
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*os << (S.IsRegionEntry ? "true" : "false") << ")";
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}
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}
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}
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namespace {
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struct OutputFunctionCoverageData {
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StringRef Name;
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uint64_t Hash;
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std::vector<StringRef> Filenames;
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std::vector<CounterMappingRegion> Regions;
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void fillCoverageMappingRecord(CoverageMappingRecord &Record) const {
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Record.FunctionName = Name;
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Record.FunctionHash = Hash;
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Record.Filenames = Filenames;
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Record.Expressions = {};
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Record.MappingRegions = Regions;
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}
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};
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struct CoverageMappingReaderMock : CoverageMappingReader {
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ArrayRef<OutputFunctionCoverageData> Functions;
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CoverageMappingReaderMock(ArrayRef<OutputFunctionCoverageData> Functions)
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: Functions(Functions) {}
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Error readNextRecord(CoverageMappingRecord &Record) override {
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if (Functions.empty())
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return make_error<CoverageMapError>(coveragemap_error::eof);
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Functions.front().fillCoverageMappingRecord(Record);
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Functions = Functions.slice(1);
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return Error::success();
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}
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};
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struct InputFunctionCoverageData {
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// Maps the global file index from CoverageMappingTest.Files
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// to the index of that file within this function. We can't just use
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// global file indexes here because local indexes have to be dense.
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// This map is used during serialization to create the virtual file mapping
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// (from local fileId to global Index) in the head of the per-function
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// coverage mapping data.
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SmallDenseMap<unsigned, unsigned> ReverseVirtualFileMapping;
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std::string Name;
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uint64_t Hash;
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std::vector<CounterMappingRegion> Regions;
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InputFunctionCoverageData(std::string Name, uint64_t Hash)
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: Name(std::move(Name)), Hash(Hash) {}
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};
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struct CoverageMappingTest : ::testing::Test {
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StringMap<unsigned> Files;
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std::vector<InputFunctionCoverageData> InputFunctions;
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std::vector<OutputFunctionCoverageData> OutputFunctions;
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InstrProfWriter ProfileWriter;
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std::unique_ptr<IndexedInstrProfReader> ProfileReader;
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std::unique_ptr<CoverageMapping> LoadedCoverage;
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void SetUp() override {
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ProfileWriter.setOutputSparse(false);
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}
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unsigned getGlobalFileIndex(StringRef Name) {
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auto R = Files.find(Name);
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if (R != Files.end())
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return R->second;
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unsigned Index = Files.size();
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Files.emplace_second(Name, Index);
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return Index;
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}
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// Return the file index of file 'Name' for the current function.
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// Add the file into the global map if necesary.
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// See also InputFunctionCoverageData::ReverseVirtualFileMapping
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// for additional comments.
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unsigned getFileIndexForFunction(StringRef Name) {
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unsigned GlobalIndex = getGlobalFileIndex(Name);
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auto &CurrentFunctionFileMapping =
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InputFunctions.back().ReverseVirtualFileMapping;
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auto R = CurrentFunctionFileMapping.find(GlobalIndex);
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if (R != CurrentFunctionFileMapping.end())
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return R->second;
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unsigned IndexInFunction = CurrentFunctionFileMapping.size();
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CurrentFunctionFileMapping.insert(
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std::make_pair(GlobalIndex, IndexInFunction));
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return IndexInFunction;
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}
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void startFunction(StringRef FuncName, uint64_t Hash) {
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InputFunctions.emplace_back(FuncName.str(), Hash);
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}
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void addCMR(Counter C, StringRef File, unsigned LS, unsigned CS, unsigned LE,
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unsigned CE) {
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InputFunctions.back().Regions.push_back(CounterMappingRegion::makeRegion(
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C, getFileIndexForFunction(File), LS, CS, LE, CE));
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}
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void addExpansionCMR(StringRef File, StringRef ExpandedFile, unsigned LS,
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unsigned CS, unsigned LE, unsigned CE) {
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InputFunctions.back().Regions.push_back(CounterMappingRegion::makeExpansion(
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getFileIndexForFunction(File), getFileIndexForFunction(ExpandedFile),
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LS, CS, LE, CE));
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}
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std::string writeCoverageRegions(InputFunctionCoverageData &Data) {
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SmallVector<unsigned, 8> FileIDs(Data.ReverseVirtualFileMapping.size());
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for (const auto &E : Data.ReverseVirtualFileMapping)
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FileIDs[E.second] = E.first;
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std::string Coverage;
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llvm::raw_string_ostream OS(Coverage);
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CoverageMappingWriter(FileIDs, None, Data.Regions).write(OS);
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return OS.str();
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}
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void readCoverageRegions(std::string Coverage,
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OutputFunctionCoverageData &Data) {
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SmallVector<StringRef, 8> Filenames(Files.size());
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for (const auto &E : Files)
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Filenames[E.getValue()] = E.getKey();
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std::vector<CounterExpression> Expressions;
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RawCoverageMappingReader Reader(Coverage, Filenames, Data.Filenames,
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Expressions, Data.Regions);
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ASSERT_TRUE(NoError(Reader.read()));
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}
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void writeAndReadCoverageRegions(bool EmitFilenames = true) {
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OutputFunctions.resize(InputFunctions.size());
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for (unsigned I = 0; I < InputFunctions.size(); ++I) {
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std::string Regions = writeCoverageRegions(InputFunctions[I]);
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readCoverageRegions(Regions, OutputFunctions[I]);
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OutputFunctions[I].Name = InputFunctions[I].Name;
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OutputFunctions[I].Hash = InputFunctions[I].Hash;
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if (!EmitFilenames)
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OutputFunctions[I].Filenames.clear();
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}
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}
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void readProfCounts() {
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auto Profile = ProfileWriter.writeBuffer();
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auto ReaderOrErr = IndexedInstrProfReader::create(std::move(Profile));
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ASSERT_TRUE(NoError(ReaderOrErr.takeError()));
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ProfileReader = std::move(ReaderOrErr.get());
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}
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void loadCoverageMapping(bool EmitFilenames = true) {
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readProfCounts();
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writeAndReadCoverageRegions(EmitFilenames);
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CoverageMappingReaderMock CovReader(OutputFunctions);
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auto CoverageOrErr = CoverageMapping::load(CovReader, *ProfileReader);
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ASSERT_TRUE(NoError(CoverageOrErr.takeError()));
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LoadedCoverage = std::move(CoverageOrErr.get());
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}
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};
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struct MaybeSparseCoverageMappingTest
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: public CoverageMappingTest,
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public ::testing::WithParamInterface<bool> {
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void SetUp() {
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CoverageMappingTest::SetUp();
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ProfileWriter.setOutputSparse(GetParam());
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}
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};
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TEST_P(MaybeSparseCoverageMappingTest, basic_write_read) {
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startFunction("func", 0x1234);
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addCMR(Counter::getCounter(0), "foo", 1, 1, 1, 1);
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addCMR(Counter::getCounter(1), "foo", 2, 1, 2, 2);
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addCMR(Counter::getZero(), "foo", 3, 1, 3, 4);
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addCMR(Counter::getCounter(2), "foo", 4, 1, 4, 8);
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addCMR(Counter::getCounter(3), "bar", 1, 2, 3, 4);
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writeAndReadCoverageRegions();
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ASSERT_EQ(1u, InputFunctions.size());
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ASSERT_EQ(1u, OutputFunctions.size());
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InputFunctionCoverageData &Input = InputFunctions.back();
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OutputFunctionCoverageData &Output = OutputFunctions.back();
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size_t N = makeArrayRef(Input.Regions).size();
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ASSERT_EQ(N, Output.Regions.size());
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for (size_t I = 0; I < N; ++I) {
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ASSERT_EQ(Input.Regions[I].Count, Output.Regions[I].Count);
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ASSERT_EQ(Input.Regions[I].FileID, Output.Regions[I].FileID);
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ASSERT_EQ(Input.Regions[I].startLoc(), Output.Regions[I].startLoc());
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ASSERT_EQ(Input.Regions[I].endLoc(), Output.Regions[I].endLoc());
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ASSERT_EQ(Input.Regions[I].Kind, Output.Regions[I].Kind);
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}
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}
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TEST_P(MaybeSparseCoverageMappingTest,
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correct_deserialize_for_more_than_two_files) {
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const char *FileNames[] = {"bar", "baz", "foo"};
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static const unsigned N = array_lengthof(FileNames);
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startFunction("func", 0x1234);
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for (unsigned I = 0; I < N; ++I)
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// Use LineStart to hold the index of the file name
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// in order to preserve that information during possible sorting of CMRs.
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addCMR(Counter::getCounter(0), FileNames[I], I, 1, I, 1);
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writeAndReadCoverageRegions();
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ASSERT_EQ(1u, OutputFunctions.size());
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OutputFunctionCoverageData &Output = OutputFunctions.back();
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ASSERT_EQ(N, Output.Regions.size());
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ASSERT_EQ(N, Output.Filenames.size());
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for (unsigned I = 0; I < N; ++I) {
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ASSERT_GT(N, Output.Regions[I].FileID);
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ASSERT_GT(N, Output.Regions[I].LineStart);
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EXPECT_EQ(FileNames[Output.Regions[I].LineStart],
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Output.Filenames[Output.Regions[I].FileID]);
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}
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}
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TEST_P(MaybeSparseCoverageMappingTest, load_coverage_for_more_than_two_files) {
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InstrProfRecord Record("func", 0x1234, {0});
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NoError(ProfileWriter.addRecord(std::move(Record)));
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const char *FileNames[] = {"bar", "baz", "foo"};
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static const unsigned N = array_lengthof(FileNames);
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startFunction("func", 0x1234);
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for (unsigned I = 0; I < N; ++I)
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// Use LineStart to hold the index of the file name
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// in order to preserve that information during possible sorting of CMRs.
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addCMR(Counter::getCounter(0), FileNames[I], I, 1, I, 1);
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loadCoverageMapping();
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for (unsigned I = 0; I < N; ++I) {
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CoverageData Data = LoadedCoverage->getCoverageForFile(FileNames[I]);
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ASSERT_TRUE(!Data.empty());
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EXPECT_EQ(I, Data.begin()->Line);
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}
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}
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TEST_P(MaybeSparseCoverageMappingTest, load_coverage_for_several_functions) {
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InstrProfRecord RecordFunc1("func1", 0x1234, {10});
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NoError(ProfileWriter.addRecord(std::move(RecordFunc1)));
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InstrProfRecord RecordFunc2("func2", 0x2345, {20});
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NoError(ProfileWriter.addRecord(std::move(RecordFunc2)));
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startFunction("func1", 0x1234);
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addCMR(Counter::getCounter(0), "foo", 1, 1, 5, 5);
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startFunction("func2", 0x2345);
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addCMR(Counter::getCounter(0), "bar", 2, 2, 6, 6);
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loadCoverageMapping();
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const auto FunctionRecords = LoadedCoverage->getCoveredFunctions();
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EXPECT_EQ(2U, std::distance(FunctionRecords.begin(), FunctionRecords.end()));
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for (const auto &FunctionRecord : FunctionRecords) {
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CoverageData Data = LoadedCoverage->getCoverageForFunction(FunctionRecord);
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std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
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ASSERT_EQ(2U, Segments.size());
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if (FunctionRecord.Name == "func1") {
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EXPECT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
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EXPECT_EQ(CoverageSegment(5, 5, false), Segments[1]);
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} else {
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ASSERT_EQ("func2", FunctionRecord.Name);
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EXPECT_EQ(CoverageSegment(2, 2, 20, true), Segments[0]);
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EXPECT_EQ(CoverageSegment(6, 6, false), Segments[1]);
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}
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}
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}
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TEST_P(MaybeSparseCoverageMappingTest, expansion_gets_first_counter) {
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startFunction("func", 0x1234);
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addCMR(Counter::getCounter(1), "foo", 10, 1, 10, 2);
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// This starts earlier in "foo", so the expansion should get its counter.
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addCMR(Counter::getCounter(2), "foo", 1, 1, 20, 1);
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addExpansionCMR("bar", "foo", 3, 3, 3, 3);
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writeAndReadCoverageRegions();
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ASSERT_EQ(1u, OutputFunctions.size());
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OutputFunctionCoverageData &Output = OutputFunctions.back();
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ASSERT_EQ(CounterMappingRegion::ExpansionRegion, Output.Regions[2].Kind);
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ASSERT_EQ(Counter::getCounter(2), Output.Regions[2].Count);
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ASSERT_EQ(3U, Output.Regions[2].LineStart);
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}
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TEST_P(MaybeSparseCoverageMappingTest, basic_coverage_iteration) {
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InstrProfRecord Record("func", 0x1234, {30, 20, 10, 0});
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NoError(ProfileWriter.addRecord(std::move(Record)));
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startFunction("func", 0x1234);
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addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
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addCMR(Counter::getCounter(1), "file1", 1, 1, 4, 7);
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addCMR(Counter::getCounter(2), "file1", 5, 8, 9, 1);
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addCMR(Counter::getCounter(3), "file1", 10, 10, 11, 11);
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loadCoverageMapping();
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CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
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std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
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ASSERT_EQ(7U, Segments.size());
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ASSERT_EQ(CoverageSegment(1, 1, 20, true), Segments[0]);
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ASSERT_EQ(CoverageSegment(4, 7, 30, false), Segments[1]);
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ASSERT_EQ(CoverageSegment(5, 8, 10, true), Segments[2]);
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ASSERT_EQ(CoverageSegment(9, 1, 30, false), Segments[3]);
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ASSERT_EQ(CoverageSegment(9, 9, false), Segments[4]);
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ASSERT_EQ(CoverageSegment(10, 10, 0, true), Segments[5]);
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ASSERT_EQ(CoverageSegment(11, 11, false), Segments[6]);
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}
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TEST_P(MaybeSparseCoverageMappingTest, uncovered_function) {
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startFunction("func", 0x1234);
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addCMR(Counter::getZero(), "file1", 1, 2, 3, 4);
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loadCoverageMapping();
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CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
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std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
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ASSERT_EQ(2U, Segments.size());
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ASSERT_EQ(CoverageSegment(1, 2, 0, true), Segments[0]);
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ASSERT_EQ(CoverageSegment(3, 4, false), Segments[1]);
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}
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TEST_P(MaybeSparseCoverageMappingTest, uncovered_function_with_mapping) {
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startFunction("func", 0x1234);
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addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
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addCMR(Counter::getCounter(1), "file1", 1, 1, 4, 7);
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loadCoverageMapping();
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CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
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std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
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ASSERT_EQ(3U, Segments.size());
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ASSERT_EQ(CoverageSegment(1, 1, 0, true), Segments[0]);
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ASSERT_EQ(CoverageSegment(4, 7, 0, false), Segments[1]);
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ASSERT_EQ(CoverageSegment(9, 9, false), Segments[2]);
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}
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TEST_P(MaybeSparseCoverageMappingTest, combine_regions) {
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InstrProfRecord Record("func", 0x1234, {10, 20, 30});
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NoError(ProfileWriter.addRecord(std::move(Record)));
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startFunction("func", 0x1234);
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addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
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addCMR(Counter::getCounter(1), "file1", 3, 3, 4, 4);
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addCMR(Counter::getCounter(2), "file1", 3, 3, 4, 4);
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loadCoverageMapping();
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CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
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std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
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ASSERT_EQ(4U, Segments.size());
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ASSERT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
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ASSERT_EQ(CoverageSegment(3, 3, 50, true), Segments[1]);
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ASSERT_EQ(CoverageSegment(4, 4, 10, false), Segments[2]);
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ASSERT_EQ(CoverageSegment(9, 9, false), Segments[3]);
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}
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TEST_P(MaybeSparseCoverageMappingTest,
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restore_combined_counter_after_nested_region) {
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InstrProfRecord Record("func", 0x1234, {10, 20, 40});
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NoError(ProfileWriter.addRecord(std::move(Record)));
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startFunction("func", 0x1234);
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addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
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addCMR(Counter::getCounter(1), "file1", 1, 1, 9, 9);
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addCMR(Counter::getCounter(2), "file1", 3, 3, 5, 5);
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loadCoverageMapping();
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CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
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std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
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ASSERT_EQ(4U, Segments.size());
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EXPECT_EQ(CoverageSegment(1, 1, 30, true), Segments[0]);
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EXPECT_EQ(CoverageSegment(3, 3, 40, true), Segments[1]);
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EXPECT_EQ(CoverageSegment(5, 5, 30, false), Segments[2]);
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EXPECT_EQ(CoverageSegment(9, 9, false), Segments[3]);
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}
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// If CodeRegions and ExpansionRegions cover the same area,
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// only counts of CodeRegions should be used.
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TEST_P(MaybeSparseCoverageMappingTest, dont_combine_expansions) {
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InstrProfRecord Record1("func", 0x1234, {10, 20});
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InstrProfRecord Record2("func", 0x1234, {0, 0});
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NoError(ProfileWriter.addRecord(std::move(Record1)));
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NoError(ProfileWriter.addRecord(std::move(Record2)));
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startFunction("func", 0x1234);
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addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
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addCMR(Counter::getCounter(1), "file1", 3, 3, 4, 4);
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addCMR(Counter::getCounter(1), "include1", 6, 6, 7, 7);
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addExpansionCMR("file1", "include1", 3, 3, 4, 4);
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loadCoverageMapping();
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CoverageData Data = LoadedCoverage->getCoverageForFile("file1");
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std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
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ASSERT_EQ(4U, Segments.size());
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ASSERT_EQ(CoverageSegment(1, 1, 10, true), Segments[0]);
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ASSERT_EQ(CoverageSegment(3, 3, 20, true), Segments[1]);
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ASSERT_EQ(CoverageSegment(4, 4, 10, false), Segments[2]);
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ASSERT_EQ(CoverageSegment(9, 9, false), Segments[3]);
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}
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// If an area is covered only by ExpansionRegions, they should be combinated.
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TEST_P(MaybeSparseCoverageMappingTest, combine_expansions) {
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InstrProfRecord Record("func", 0x1234, {2, 3, 7});
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NoError(ProfileWriter.addRecord(std::move(Record)));
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|
|
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startFunction("func", 0x1234);
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addCMR(Counter::getCounter(1), "include1", 1, 1, 1, 10);
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addCMR(Counter::getCounter(2), "include2", 1, 1, 1, 10);
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addCMR(Counter::getCounter(0), "file", 1, 1, 5, 5);
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addExpansionCMR("file", "include1", 3, 1, 3, 5);
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addExpansionCMR("file", "include2", 3, 1, 3, 5);
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|
|
|
loadCoverageMapping();
|
|
|
|
CoverageData Data = LoadedCoverage->getCoverageForFile("file");
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std::vector<CoverageSegment> Segments(Data.begin(), Data.end());
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ASSERT_EQ(4U, Segments.size());
|
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EXPECT_EQ(CoverageSegment(1, 1, 2, true), Segments[0]);
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EXPECT_EQ(CoverageSegment(3, 1, 10, true), Segments[1]);
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|
EXPECT_EQ(CoverageSegment(3, 5, 2, false), Segments[2]);
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EXPECT_EQ(CoverageSegment(5, 5, false), Segments[3]);
|
|
}
|
|
|
|
TEST_P(MaybeSparseCoverageMappingTest, strip_filename_prefix) {
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|
InstrProfRecord Record("file1:func", 0x1234, {0});
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|
NoError(ProfileWriter.addRecord(std::move(Record)));
|
|
|
|
startFunction("file1:func", 0x1234);
|
|
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
|
|
loadCoverageMapping();
|
|
|
|
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(MaybeSparseCoverageMappingTest, strip_unknown_filename_prefix) {
|
|
InstrProfRecord Record("<unknown>:func", 0x1234, {0});
|
|
NoError(ProfileWriter.addRecord(std::move(Record)));
|
|
|
|
startFunction("<unknown>:func", 0x1234);
|
|
addCMR(Counter::getCounter(0), "", 1, 1, 9, 9);
|
|
loadCoverageMapping(/*EmitFilenames=*/false);
|
|
|
|
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(MaybeSparseCoverageMappingTest, dont_detect_false_instantiations) {
|
|
InstrProfRecord Record1("foo", 0x1234, {10});
|
|
InstrProfRecord Record2("bar", 0x2345, {20});
|
|
NoError(ProfileWriter.addRecord(std::move(Record1)));
|
|
NoError(ProfileWriter.addRecord(std::move(Record2)));
|
|
|
|
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);
|
|
|
|
loadCoverageMapping();
|
|
|
|
std::vector<const FunctionRecord *> Instantiations =
|
|
LoadedCoverage->getInstantiations("expanded");
|
|
ASSERT_TRUE(Instantiations.empty());
|
|
}
|
|
|
|
TEST_P(MaybeSparseCoverageMappingTest, load_coverage_for_expanded_file) {
|
|
InstrProfRecord Record("func", 0x1234, {10});
|
|
NoError(ProfileWriter.addRecord(std::move(Record)));
|
|
|
|
startFunction("func", 0x1234);
|
|
addCMR(Counter::getCounter(0), "expanded", 1, 1, 1, 10);
|
|
addExpansionCMR("main", "expanded", 4, 1, 4, 5);
|
|
|
|
loadCoverageMapping();
|
|
|
|
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]);
|
|
}
|
|
|
|
INSTANTIATE_TEST_CASE_P(MaybeSparse, MaybeSparseCoverageMappingTest,
|
|
::testing::Bool());
|
|
|
|
} // end anonymous namespace
|