#include "llvm/Support/LineIterator.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/OnDiskHashTable.h"
+#include "llvm/Support/raw_ostream.h"
#include <iterator>
namespace llvm {
InstrProfIterator begin() { return InstrProfIterator(this); }
InstrProfIterator end() { return InstrProfIterator(); }
-protected:
- /// String table for holding a unique copy of all the strings in the profile.
- InstrProfStringTable StringTable;
-
+ protected:
/// Set the current std::error_code and return same.
std::error_code error(std::error_code EC) {
LastError = EC;
TextInstrProfReader(std::unique_ptr<MemoryBuffer> DataBuffer_)
: DataBuffer(std::move(DataBuffer_)), Line(*DataBuffer, true, '#') {}
+ /// Return true if the given buffer is in text instrprof format.
+ static bool hasFormat(const MemoryBuffer &Buffer);
+
/// Read the header.
std::error_code readHeader() override { return success(); }
/// Read a single record.
private:
/// The profile data file contents.
std::unique_ptr<MemoryBuffer> DataBuffer;
- struct ProfileData {
- const uint32_t NameSize;
- const uint32_t NumCounters;
- const uint64_t FuncHash;
- const IntPtrT NamePtr;
- const IntPtrT CounterPtr;
- };
- struct RawHeader {
- const uint64_t Magic;
- const uint64_t Version;
- const uint64_t DataSize;
- const uint64_t CountersSize;
- const uint64_t NamesSize;
- const uint64_t CountersDelta;
- const uint64_t NamesDelta;
- };
-
bool ShouldSwapBytes;
uint64_t CountersDelta;
uint64_t NamesDelta;
- const ProfileData *Data;
- const ProfileData *DataEnd;
+ const RawInstrProf::ProfileData<IntPtrT> *Data;
+ const RawInstrProf::ProfileData<IntPtrT> *DataEnd;
const uint64_t *CountersStart;
const char *NamesStart;
+ const uint8_t *ValueDataStart;
const char *ProfileEnd;
+ uint32_t ValueKindLast;
+ uint32_t CurValueDataSize;
+
+ // String table for holding a unique copy of all the strings in the profile.
+ InstrProfStringTable StringTable;
+ InstrProfRecord::ValueMapType FunctionPtrToNameMap;
RawInstrProfReader(const RawInstrProfReader &) = delete;
RawInstrProfReader &operator=(const RawInstrProfReader &) = delete;
private:
std::error_code readNextHeader(const char *CurrentPos);
- std::error_code readHeader(const RawHeader &Header);
- template <class IntT>
- IntT swap(IntT Int) const {
+ std::error_code readHeader(const RawInstrProf::Header &Header);
+ template <class IntT> IntT swap(IntT Int) const {
return ShouldSwapBytes ? sys::getSwappedBytes(Int) : Int;
}
+ support::endianness getDataEndianness() const {
+ support::endianness HostEndian = getHostEndianness();
+ if (!ShouldSwapBytes)
+ return HostEndian;
+ if (HostEndian == support::little)
+ return support::big;
+ else
+ return support::little;
+ }
+
+ inline uint8_t getNumPaddingBytes(uint64_t SizeInBytes) {
+ return 7 & (sizeof(uint64_t) - SizeInBytes % sizeof(uint64_t));
+ }
+ std::error_code readName(InstrProfRecord &Record);
+ std::error_code readFuncHash(InstrProfRecord &Record);
+ std::error_code readRawCounts(InstrProfRecord &Record);
+ std::error_code readValueProfilingData(InstrProfRecord &Record);
+ bool atEnd() const { return Data == DataEnd; }
+ void advanceData() {
+ Data++;
+ ValueDataStart += CurValueDataSize;
+ }
+
const uint64_t *getCounter(IntPtrT CounterPtr) const {
ptrdiff_t Offset = (swap(CounterPtr) - CountersDelta) / sizeof(uint64_t);
return CountersStart + Offset;
std::vector<InstrProfRecord> DataBuffer;
IndexedInstrProf::HashT HashType;
unsigned FormatVersion;
+ // Endianness of the input value profile data.
+ // It should be LE by default, but can be changed
+ // for testing purpose.
+ support::endianness ValueProfDataEndianness;
std::vector<std::pair<uint64_t, const char *>> HashKeys;
public:
InstrProfLookupTrait(IndexedInstrProf::HashT HashType, unsigned FormatVersion)
- : HashType(HashType), FormatVersion(FormatVersion) {}
+ : HashType(HashType), FormatVersion(FormatVersion),
+ ValueProfDataEndianness(support::little) {}
typedef ArrayRef<InstrProfRecord> data_type;
return StringRef((const char *)D, N);
}
- bool ReadValueProfilingData(const unsigned char *&D,
+ bool readValueProfilingData(const unsigned char *&D,
const unsigned char *const End);
data_type ReadData(StringRef K, const unsigned char *D, offset_type N);
+
+ // Used for testing purpose only.
+ void setValueProfDataEndianness(support::endianness Endianness) {
+ ValueProfDataEndianness = Endianness;
+ }
+};
+
+struct InstrProfReaderIndexBase {
+ // Read all the profile records with the same key pointed to the current
+ // iterator.
+ virtual std::error_code getRecords(ArrayRef<InstrProfRecord> &Data) = 0;
+ // Read all the profile records with the key equal to FuncName
+ virtual std::error_code getRecords(StringRef FuncName,
+ ArrayRef<InstrProfRecord> &Data) = 0;
+ virtual void advanceToNextKey() = 0;
+ virtual bool atEnd() const = 0;
+ virtual void setValueProfDataEndianness(support::endianness Endianness) = 0;
+ virtual ~InstrProfReaderIndexBase() {}
+ virtual uint64_t getVersion() const = 0;
};
typedef OnDiskIterableChainedHashTable<InstrProfLookupTrait>
- InstrProfReaderIndex;
+ OnDiskHashTableImplV3;
+
+template <typename HashTableImpl>
+class InstrProfReaderIndex : public InstrProfReaderIndexBase {
+
+private:
+ std::unique_ptr<HashTableImpl> HashTable;
+ typename HashTableImpl::data_iterator RecordIterator;
+ uint64_t FormatVersion;
+
+ // String table for holding a unique copy of all the strings in the profile.
+ InstrProfStringTable StringTable;
+
+public:
+ InstrProfReaderIndex(const unsigned char *Buckets,
+ const unsigned char *const Payload,
+ const unsigned char *const Base,
+ IndexedInstrProf::HashT HashType, uint64_t Version);
+
+ std::error_code getRecords(ArrayRef<InstrProfRecord> &Data) override;
+ std::error_code getRecords(StringRef FuncName,
+ ArrayRef<InstrProfRecord> &Data) override;
+ void advanceToNextKey() override { RecordIterator++; }
+ bool atEnd() const override {
+ return RecordIterator == HashTable->data_end();
+ }
+ void setValueProfDataEndianness(support::endianness Endianness) override {
+ HashTable->getInfoObj().setValueProfDataEndianness(Endianness);
+ }
+ ~InstrProfReaderIndex() override {}
+ uint64_t getVersion() const override { return FormatVersion; }
+};
/// Reader for the indexed binary instrprof format.
class IndexedInstrProfReader : public InstrProfReader {
/// The profile data file contents.
std::unique_ptr<MemoryBuffer> DataBuffer;
/// The index into the profile data.
- std::unique_ptr<InstrProfReaderIndex> Index;
- /// Iterator over the profile data.
- InstrProfReaderIndex::data_iterator RecordIterator;
- /// The file format version of the profile data.
- uint64_t FormatVersion;
+ std::unique_ptr<InstrProfReaderIndexBase> Index;
/// The maximal execution count among all functions.
uint64_t MaxFunctionCount;
IndexedInstrProfReader(const IndexedInstrProfReader &) = delete;
IndexedInstrProfReader &operator=(const IndexedInstrProfReader &) = delete;
+
public:
+ uint64_t getVersion() const { return Index->getVersion(); }
IndexedInstrProfReader(std::unique_ptr<MemoryBuffer> DataBuffer)
: DataBuffer(std::move(DataBuffer)), Index(nullptr) {}
/// Read a single record.
std::error_code readNextRecord(InstrProfRecord &Record) override;
+ /// Return the pointer to InstrProfRecord associated with FuncName
+ /// and FuncHash
+ ErrorOr<InstrProfRecord> getInstrProfRecord(StringRef FuncName,
+ uint64_t FuncHash);
+
/// Fill Counts with the profile data for the given function name.
std::error_code getFunctionCounts(StringRef FuncName, uint64_t FuncHash,
std::vector<uint64_t> &Counts);
+
/// Return the maximum of all known function counts.
uint64_t getMaximumFunctionCount() { return MaxFunctionCount; }
static ErrorOr<std::unique_ptr<IndexedInstrProfReader>>
create(std::unique_ptr<MemoryBuffer> Buffer);
+
+ // Used for testing purpose only.
+ void setValueProfDataEndianness(support::endianness Endianness) {
+ Index->setValueProfDataEndianness(Endianness);
+ }
};
} // end namespace llvm
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