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

292 lines
10 KiB
C++

//===- unittest/ProfileData/CoverageMappingTest.cpp -------------------------=//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/ProfileData/CoverageMapping.h"
#include "llvm/ProfileData/CoverageMappingReader.h"
#include "llvm/ProfileData/CoverageMappingWriter.h"
#include "llvm/ProfileData/InstrProfReader.h"
#include "llvm/ProfileData/InstrProfWriter.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"
#include <sstream>
using namespace llvm;
using namespace coverage;
static ::testing::AssertionResult NoError(std::error_code EC) {
if (!EC)
return ::testing::AssertionSuccess();
return ::testing::AssertionFailure() << "error " << EC.value()
<< ": " << EC.message();
}
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 OneFunctionCoverageReader : CoverageMappingReader {
StringRef Name;
uint64_t Hash;
std::vector<StringRef> Filenames;
ArrayRef<CounterMappingRegion> Regions;
bool Done;
OneFunctionCoverageReader(StringRef Name, uint64_t Hash,
ArrayRef<StringRef> Filenames,
ArrayRef<CounterMappingRegion> Regions)
: Name(Name), Hash(Hash), Filenames(Filenames), Regions(Regions),
Done(false) {}
std::error_code readNextRecord(CoverageMappingRecord &Record) override {
if (Done)
return instrprof_error::eof;
Done = true;
Record.FunctionName = Name;
Record.FunctionHash = Hash;
Record.Filenames = Filenames;
Record.Expressions = {};
Record.MappingRegions = Regions;
return instrprof_error::success;
}
};
struct CoverageMappingTest : ::testing::Test {
StringMap<unsigned> Files;
unsigned NextFile;
std::vector<CounterMappingRegion> InputCMRs;
std::vector<StringRef> OutputFiles;
std::vector<CounterExpression> OutputExpressions;
std::vector<CounterMappingRegion> OutputCMRs;
InstrProfWriter ProfileWriter;
std::unique_ptr<IndexedInstrProfReader> ProfileReader;
std::unique_ptr<CoverageMapping> LoadedCoverage;
void SetUp() override {
NextFile = 0;
}
unsigned getFile(StringRef Name) {
auto R = Files.find(Name);
if (R != Files.end())
return R->second;
Files[Name] = NextFile;
return NextFile++;
}
void addCMR(Counter C, StringRef File, unsigned LS, unsigned CS, unsigned LE,
unsigned CE) {
InputCMRs.push_back(
CounterMappingRegion::makeRegion(C, getFile(File), LS, CS, LE, CE));
}
void addExpansionCMR(StringRef File, StringRef ExpandedFile, unsigned LS,
unsigned CS, unsigned LE, unsigned CE) {
InputCMRs.push_back(CounterMappingRegion::makeExpansion(
getFile(File), getFile(ExpandedFile), LS, CS, LE, CE));
}
std::string writeCoverageRegions() {
SmallVector<unsigned, 8> FileIDs;
for (const auto &E : Files)
FileIDs.push_back(E.getValue());
std::string Coverage;
llvm::raw_string_ostream OS(Coverage);
CoverageMappingWriter(FileIDs, None, InputCMRs).write(OS);
return OS.str();
}
void readCoverageRegions(std::string Coverage) {
SmallVector<StringRef, 8> Filenames;
for (const auto &E : Files)
Filenames.push_back(E.getKey());
RawCoverageMappingReader Reader(Coverage, Filenames, OutputFiles,
OutputExpressions, OutputCMRs);
ASSERT_TRUE(NoError(Reader.read()));
}
void readProfCounts() {
auto Profile = ProfileWriter.writeBuffer();
auto ReaderOrErr = IndexedInstrProfReader::create(std::move(Profile));
ASSERT_TRUE(NoError(ReaderOrErr.getError()));
ProfileReader = std::move(ReaderOrErr.get());
}
void loadCoverageMapping(StringRef FuncName, uint64_t Hash) {
std::string Regions = writeCoverageRegions();
readCoverageRegions(Regions);
SmallVector<StringRef, 8> Filenames;
for (const auto &E : Files)
Filenames.push_back(E.getKey());
OneFunctionCoverageReader CovReader(FuncName, Hash, Filenames, OutputCMRs);
auto CoverageOrErr = CoverageMapping::load(CovReader, *ProfileReader);
ASSERT_TRUE(NoError(CoverageOrErr.getError()));
LoadedCoverage = std::move(CoverageOrErr.get());
}
};
TEST_F(CoverageMappingTest, basic_write_read) {
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);
std::string Coverage = writeCoverageRegions();
readCoverageRegions(Coverage);
size_t N = makeArrayRef(InputCMRs).size();
ASSERT_EQ(N, OutputCMRs.size());
for (size_t I = 0; I < N; ++I) {
ASSERT_EQ(InputCMRs[I].Count, OutputCMRs[I].Count);
ASSERT_EQ(InputCMRs[I].FileID, OutputCMRs[I].FileID);
ASSERT_EQ(InputCMRs[I].startLoc(), OutputCMRs[I].startLoc());
ASSERT_EQ(InputCMRs[I].endLoc(), OutputCMRs[I].endLoc());
ASSERT_EQ(InputCMRs[I].Kind, OutputCMRs[I].Kind);
}
}
TEST_F(CoverageMappingTest, expansion_gets_first_counter) {
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);
std::string Coverage = writeCoverageRegions();
readCoverageRegions(Coverage);
ASSERT_EQ(CounterMappingRegion::ExpansionRegion, OutputCMRs[2].Kind);
ASSERT_EQ(Counter::getCounter(2), OutputCMRs[2].Count);
ASSERT_EQ(3U, OutputCMRs[2].LineStart);
}
TEST_F(CoverageMappingTest, basic_coverage_iteration) {
ProfileWriter.addFunctionCounts("func", 0x1234, {30, 20, 10, 0});
readProfCounts();
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);
loadCoverageMapping("func", 0x1234);
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_F(CoverageMappingTest, uncovered_function) {
readProfCounts();
addCMR(Counter::getZero(), "file1", 1, 2, 3, 4);
loadCoverageMapping("func", 0x1234);
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_F(CoverageMappingTest, uncovered_function_with_mapping) {
readProfCounts();
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
addCMR(Counter::getCounter(1), "file1", 1, 1, 4, 7);
loadCoverageMapping("func", 0x1234);
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_F(CoverageMappingTest, combine_regions) {
ProfileWriter.addFunctionCounts("func", 0x1234, {10, 20, 30});
readProfCounts();
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);
loadCoverageMapping("func", 0x1234);
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_F(CoverageMappingTest, dont_combine_expansions) {
ProfileWriter.addFunctionCounts("func", 0x1234, {10, 20});
readProfCounts();
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);
loadCoverageMapping("func", 0x1234);
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]);
}
TEST_F(CoverageMappingTest, strip_filename_prefix) {
ProfileWriter.addFunctionCounts("file1:func", 0x1234, {10});
readProfCounts();
addCMR(Counter::getCounter(0), "file1", 1, 1, 9, 9);
loadCoverageMapping("file1:func", 0x1234);
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]);
}
} // end anonymous namespace