Result.reset(new RawInstrProfReader64(std::move(Buffer)));
else if (RawInstrProfReader32::hasFormat(*Buffer))
Result.reset(new RawInstrProfReader32(std::move(Buffer)));
- else
+ else if (TextInstrProfReader::hasFormat(*Buffer))
Result.reset(new TextInstrProfReader(std::move(Buffer)));
+ else
+ return instrprof_error::unrecognized_format;
// Initialize the reader and return the result.
if (std::error_code EC = initializeReader(*Result))
*this = InstrProfIterator();
}
+bool TextInstrProfReader::hasFormat(const MemoryBuffer &Buffer) {
+ // Verify that this really looks like plain ASCII text by checking a
+ // 'reasonable' number of characters (up to profile magic size).
+ size_t count = std::min(Buffer.getBufferSize(), sizeof(uint64_t));
+ StringRef buffer = Buffer.getBufferStart();
+ return count == 0 || std::all_of(buffer.begin(), buffer.begin() + count,
+ [](char c) { return ::isprint(c) || ::isspace(c); });
+}
+
std::error_code TextInstrProfReader::readNextRecord(InstrProfRecord &Record) {
// Skip empty lines and comments.
while (!Line.is_at_end() && (Line->empty() || Line->startswith("#")))
CountersDelta = swap(Header.CountersDelta);
NamesDelta = swap(Header.NamesDelta);
+ ValueDataDelta = swap(Header.ValueDataDelta);
auto DataSize = swap(Header.DataSize);
auto CountersSize = swap(Header.CountersSize);
auto NamesSize = swap(Header.NamesSize);
+ auto ValueDataSize = swap(Header.ValueDataSize);
+ ValueKindLast = swap(Header.ValueKindLast);
+
+ auto DataSizeInBytes = DataSize * sizeof(RawInstrProf::ProfileData<IntPtrT>);
+ auto PaddingSize = getNumPaddingBytes(NamesSize);
ptrdiff_t DataOffset = sizeof(RawInstrProf::Header);
- ptrdiff_t CountersOffset =
- DataOffset + sizeof(RawInstrProf::ProfileData<IntPtrT>) * DataSize;
+ ptrdiff_t CountersOffset = DataOffset + DataSizeInBytes;
ptrdiff_t NamesOffset = CountersOffset + sizeof(uint64_t) * CountersSize;
- size_t ProfileSize = NamesOffset + sizeof(char) * NamesSize;
+ ptrdiff_t ValueDataOffset = NamesOffset + NamesSize + PaddingSize;
+ size_t ProfileSize = ValueDataOffset + ValueDataSize;
auto *Start = reinterpret_cast<const char *>(&Header);
if (Start + ProfileSize > DataBuffer->getBufferEnd())
DataEnd = Data + DataSize;
CountersStart = reinterpret_cast<const uint64_t *>(Start + CountersOffset);
NamesStart = Start + NamesOffset;
+ ValueDataStart = reinterpret_cast<const uint8_t*>(Start + ValueDataOffset);
ProfileEnd = Start + ProfileSize;
+ FunctionPtrToNameMap.clear();
+ for (const RawInstrProf::ProfileData<IntPtrT> *I = Data; I != DataEnd; ++I) {
+ const IntPtrT FPtr = swap(I->FunctionPointer);
+ if (!FPtr)
+ continue;
+ StringRef FunctionName(getName(I->NamePtr), swap(I->NameSize));
+ const char* NameEntryPtr = StringTable.insertString(FunctionName);
+ FunctionPtrToNameMap.push_back(std::pair<const IntPtrT, const char*>
+ (FPtr, NameEntryPtr));
+ }
+ std::sort(FunctionPtrToNameMap.begin(), FunctionPtrToNameMap.end(), less_first());
+ FunctionPtrToNameMap.erase(std::unique(FunctionPtrToNameMap.begin(),
+ FunctionPtrToNameMap.end()),
+ FunctionPtrToNameMap.end());
return success();
}
template <class IntPtrT>
-std::error_code
-RawInstrProfReader<IntPtrT>::readNextRecord(InstrProfRecord &Record) {
- if (Data == DataEnd)
- if (std::error_code EC = readNextHeader(ProfileEnd))
- return EC;
+std::error_code RawInstrProfReader<IntPtrT>::readName(InstrProfRecord &Record) {
+ Record.Name = StringRef(getName(Data->NamePtr), swap(Data->NameSize));
+ if (Record.Name.data() < NamesStart ||
+ Record.Name.data() + Record.Name.size() >
+ reinterpret_cast<const char *>(ValueDataStart))
+ return error(instrprof_error::malformed);
+ return success();
+}
- // Get the raw data.
- StringRef RawName(getName(Data->NamePtr), swap(Data->NameSize));
+template <class IntPtrT>
+std::error_code RawInstrProfReader<IntPtrT>::readFuncHash(
+ InstrProfRecord &Record) {
+ Record.Hash = swap(Data->FuncHash);
+ return success();
+}
+
+template <class IntPtrT>
+std::error_code RawInstrProfReader<IntPtrT>::readRawCounts(
+ InstrProfRecord &Record) {
uint32_t NumCounters = swap(Data->NumCounters);
+ IntPtrT CounterPtr = Data->CounterPtr;
if (NumCounters == 0)
return error(instrprof_error::malformed);
- auto RawCounts = makeArrayRef(getCounter(Data->CounterPtr), NumCounters);
- // Check bounds.
+ auto RawCounts = makeArrayRef(getCounter(CounterPtr), NumCounters);
auto *NamesStartAsCounter = reinterpret_cast<const uint64_t *>(NamesStart);
- if (RawName.data() < NamesStart ||
- RawName.data() + RawName.size() > DataBuffer->getBufferEnd() ||
- RawCounts.data() < CountersStart ||
+
+ // Check bounds.
+ if (RawCounts.data() < CountersStart ||
RawCounts.data() + RawCounts.size() > NamesStartAsCounter)
return error(instrprof_error::malformed);
- // Store the data in Record, byte-swapping as necessary.
- Record.Hash = swap(Data->FuncHash);
- Record.Name = RawName;
if (ShouldSwapBytes) {
Record.Counts.clear();
Record.Counts.reserve(RawCounts.size());
} else
Record.Counts = RawCounts;
+ return success();
+}
+
+template <class IntPtrT>
+std::error_code RawInstrProfReader<IntPtrT>::readValueData(
+ InstrProfRecord &Record) {
+
+ Record.clearValueData();
+ if (!Data->Values || (ValueDataDelta == 0))
+ return success();
+
+ // Read value data.
+ uint64_t NumVSites = 0;
+ for (uint32_t Kind = IPVK_First; Kind <= ValueKindLast; ++Kind)
+ NumVSites += swap(Data->NumValueSites[Kind]);
+ NumVSites += getNumPaddingBytes(NumVSites);
+
+ auto VDataCounts = makeArrayRef(getValueDataCounts(Data->Values), NumVSites);
+ // Check bounds.
+ if (VDataCounts.data() < ValueDataStart ||
+ VDataCounts.data() + VDataCounts.size() >
+ reinterpret_cast<const uint8_t *>(ProfileEnd))
+ return error(instrprof_error::malformed);
+
+ const InstrProfValueData *VDataPtr =
+ getValueData(swap(Data->Values) + NumVSites);
+ for (uint32_t Kind = IPVK_First; Kind <= ValueKindLast; ++Kind) {
+ NumVSites = swap(Data->NumValueSites[Kind]);
+ Record.reserveSites(Kind, NumVSites);
+ for (uint32_t VSite = 0; VSite < NumVSites; ++VSite) {
+
+ uint32_t VDataCount = VDataCounts[VSite];
+ if ((const char *)(VDataPtr + VDataCount) > ProfileEnd)
+ return error(instrprof_error::malformed);
+
+ std::vector<InstrProfValueData> CurrentValues;
+ CurrentValues.reserve(VDataCount);
+ for (uint32_t VIndex = 0; VIndex < VDataCount; ++VIndex) {
+ uint64_t TargetValue = swap(VDataPtr->Value);
+ uint64_t Count = swap(VDataPtr->Count);
+ CurrentValues.push_back({TargetValue, Count});
+ ++VDataPtr;
+ }
+ Record.addValueData(Kind, VSite, CurrentValues.data(),
+ VDataCount, &FunctionPtrToNameMap);
+ }
+ }
+ return success();
+}
+
+template <class IntPtrT>
+std::error_code RawInstrProfReader<IntPtrT>::readNextRecord(
+ InstrProfRecord &Record) {
+ if (atEnd())
+ if (std::error_code EC = readNextHeader(ProfileEnd))
+ return EC;
+
+ // Read name ad set it in Record.
+ if (std::error_code EC = readName(Record))
+ return EC;
+
+ // Read FuncHash and set it in Record.
+ if (std::error_code EC = readFuncHash(Record))
+ return EC;
+
+ // Read raw counts and set Record.
+ if (std::error_code EC = readRawCounts(Record))
+ return EC;
+
+ // Read value data and set Record.
+ if (std::error_code EC = readValueData(Record)) return EC;
+
// Iterate.
- ++Data;
+ advanceData();
return success();
}
bool InstrProfLookupTrait::ReadValueProfilingData(
const unsigned char *&D, const unsigned char *const End) {
+ ErrorOr<std::unique_ptr<ValueProfData>> VDataPtrOrErr =
+ ValueProfData::getValueProfData(D, End, ValueProfDataEndianness);
- using namespace support;
- // Read number of value kinds with value sites.
- if (D + sizeof(uint64_t) > End)
+ if (VDataPtrOrErr.getError())
return false;
- uint64_t ValueKindCount = endian::readNext<uint64_t, little, unaligned>(D);
-
- for (uint32_t Kind = 0; Kind < ValueKindCount; ++Kind) {
- // Read value kind and number of value sites for kind.
- if (D + 2 * sizeof(uint64_t) > End)
- return false;
- uint64_t ValueKind = endian::readNext<uint64_t, little, unaligned>(D);
- uint64_t ValueSiteCount = endian::readNext<uint64_t, little, unaligned>(D);
+ VDataPtrOrErr.get()->deserializeTo(DataBuffer.back(), &HashKeys);
+ D += VDataPtrOrErr.get()->TotalSize;
- std::vector<InstrProfValueSiteRecord> &ValueSites =
- DataBuffer.back().getValueSitesForKind(ValueKind);
- ValueSites.reserve(ValueSiteCount);
- for (uint64_t VSite = 0; VSite < ValueSiteCount; ++VSite) {
- // Read number of value data pairs at value site.
- if (D + sizeof(uint64_t) > End)
- return false;
- uint64_t ValueDataCount =
- endian::readNext<uint64_t, little, unaligned>(D);
-
- // Check if there are as many ValueDataPairs as ValueDataCount in memory.
- if (D + (ValueDataCount << 1) * sizeof(uint64_t) > End)
- return false;
-
- InstrProfValueSiteRecord VSiteRecord;
- for (uint64_t VCount = 0; VCount < ValueDataCount; ++VCount) {
- uint64_t Value = endian::readNext<uint64_t, little, unaligned>(D);
- uint64_t NumTaken = endian::readNext<uint64_t, little, unaligned>(D);
- switch (ValueKind) {
- case IPVK_IndirectCallTarget: {
- auto Result =
- std::lower_bound(HashKeys.begin(), HashKeys.end(), Value,
- [](const std::pair<uint64_t, const char *> &LHS,
- uint64_t RHS) { return LHS.first < RHS; });
- assert(Result != HashKeys.end() &&
- "Hash does not match any known keys\n");
- Value = (uint64_t)Result->second;
- break;
- }
- }
- VSiteRecord.ValueData.push_back(std::make_pair(Value, NumTaken));
- }
- ValueSites.push_back(std::move(VSiteRecord));
- }
- }
return true;
}
for (uint64_t J = 0; J < CountsSize; ++J)
CounterBuffer.push_back(endian::readNext<uint64_t, little, unaligned>(D));
- DataBuffer.push_back(InstrProfRecord(K, Hash, std::move(CounterBuffer)));
+ DataBuffer.emplace_back(K, Hash, std::move(CounterBuffer));
// Read value profiling data.
if (FormatVersion > 2 && !ReadValueProfilingData(D, End)) {
return DataBuffer;
}
-std::error_code InstrProfReaderIndex::getRecords(
- StringRef FuncName, ArrayRef<InstrProfRecord> &Data) {
+std::error_code
+InstrProfReaderIndex::getRecords(StringRef FuncName,
+ ArrayRef<InstrProfRecord> &Data) {
auto Iter = Index->find(FuncName);
- if (Iter == Index->end()) return instrprof_error::unknown_function;
+ if (Iter == Index->end())
+ return instrprof_error::unknown_function;
Data = (*Iter);
- if (Data.empty()) return instrprof_error::malformed;
+ if (Data.empty())
+ return instrprof_error::malformed;
return instrprof_error::success;
}
}
bool IndexedInstrProfReader::hasFormat(const MemoryBuffer &DataBuffer) {
- if (DataBuffer.getBufferSize() < 8) return false;
+ if (DataBuffer.getBufferSize() < 8)
+ return false;
using namespace support;
uint64_t Magic =
endian::read<uint64_t, little, aligned>(DataBuffer.getBufferStart());
return success();
}
-std::error_code IndexedInstrProfReader::getFunctionCounts(
- StringRef FuncName, uint64_t FuncHash, std::vector<uint64_t> &Counts) {
+ErrorOr<InstrProfRecord>
+IndexedInstrProfReader::getInstrProfRecord(StringRef FuncName,
+ uint64_t FuncHash) {
ArrayRef<InstrProfRecord> Data;
-
std::error_code EC = Index.getRecords(FuncName, Data);
- if (EC != instrprof_error::success) return EC;
-
+ if (EC != instrprof_error::success)
+ return EC;
// Found it. Look for counters with the right hash.
for (unsigned I = 0, E = Data.size(); I < E; ++I) {
// Check for a match and fill the vector if there is one.
if (Data[I].Hash == FuncHash) {
- Counts = Data[I].Counts;
- return success();
+ return std::move(Data[I]);
}
}
return error(instrprof_error::hash_mismatch);
}
+std::error_code
+IndexedInstrProfReader::getFunctionCounts(StringRef FuncName, uint64_t FuncHash,
+ std::vector<uint64_t> &Counts) {
+ ErrorOr<InstrProfRecord> Record = getInstrProfRecord(FuncName, FuncHash);
+ if (std::error_code EC = Record.getError())
+ return EC;
+
+ Counts = Record.get().Counts;
+ return success();
+}
+
std::error_code IndexedInstrProfReader::readNextRecord(
InstrProfRecord &Record) {
static unsigned RecordIndex = 0;
ArrayRef<InstrProfRecord> Data;
std::error_code EC = Index.getRecords(Data);
- if (EC != instrprof_error::success) return error(EC);
+ if (EC != instrprof_error::success)
+ return error(EC);
Record = Data[RecordIndex++];
if (RecordIndex >= Data.size()) {
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