Reader for the indexed binary instrprof format. More...

#include "llvm/ProfileData/InstrProfReader.h"

Inheritance diagram for llvm::IndexedInstrProfReader:

Collaboration diagram for llvm::IndexedInstrProfReader:

Public Member Functions
	IndexedInstrProfReader (std::unique_ptr< MemoryBuffer > DataBuffer, std::unique_ptr< MemoryBuffer > RemappingBuffer=nullptr)

	IndexedInstrProfReader (const IndexedInstrProfReader &)=delete

IndexedInstrProfReader &	operator= (const IndexedInstrProfReader &)=delete

uint64_t	getVersion () const override
	Return the profile version.

bool	isIRLevelProfile () const override

bool	hasCSIRLevelProfile () const override

bool	instrEntryBBEnabled () const override

bool	hasSingleByteCoverage () const override
	Return true if the profile has single byte counters representing coverage.

bool	functionEntryOnly () const override
	Return true if the profile only instruments function entries.

bool	hasMemoryProfile () const override
	Return true if profile includes a memory profile.

InstrProfKind	getProfileKind () const override
	Returns a BitsetEnum describing the attributes of the indexed instr profile.

Error	readHeader () override
	Read the file header.

Error	readNextRecord (NamedInstrProfRecord &Record) override
	Read a single record.

Expected< InstrProfRecord >	getInstrProfRecord (StringRef FuncName, uint64_t FuncHash, uint64_t *MismatchedFuncSum=nullptr)
	Return the NamedInstrProfRecord associated with FuncName and FuncHash.

Expected< memprof::MemProfRecord >	getMemProfRecord (uint64_t FuncNameHash)
	Return the memprof record for the function identified by llvm::md5(Name).

Error	getFunctionCounts (StringRef FuncName, uint64_t FuncHash, std::vector< uint64_t > &Counts)
	Fill Counts with the profile data for the given function name.

uint64_t	getMaximumFunctionCount (bool UseCS)
	Return the maximum of all known function counts.

void	setValueProfDataEndianness (support::endianness Endianness)

InstrProfSymtab &	getSymtab () override
	Return the PGO symtab.

ProfileSummary &	getSummary (bool UseCS)
	Return the profile summary.

Error	readBinaryIds (std::vector< llvm::object::BuildID > &BinaryIds) override
	Read a list of binary ids.

Error	printBinaryIds (raw_ostream &OS) override
	Print binary ids.

Public Member Functions inherited from llvm::InstrProfReader
	InstrProfReader ()=default

virtual	~InstrProfReader ()=default

virtual Error	readHeader ()=0
	Read the header. Required before reading first record.

virtual Error	readNextRecord (NamedInstrProfRecord &Record)=0
	Read a single record.

virtual Error	readBinaryIds (std::vector< llvm::object::BuildID > &BinaryIds)
	Read a list of binary ids.

virtual Error	printBinaryIds (raw_ostream &OS)
	Print binary ids.

InstrProfIterator	begin ()
	Iterator over profile data.

InstrProfIterator	end ()

virtual uint64_t	getVersion () const =0
	Return the profile version.

virtual bool	isIRLevelProfile () const =0

virtual bool	hasCSIRLevelProfile () const =0

virtual bool	instrEntryBBEnabled () const =0

virtual bool	useDebugInfoCorrelate () const
	Return true if we must provide debug info to create PGO profiles.

virtual bool	hasSingleByteCoverage () const =0
	Return true if the profile has single byte counters representing coverage.

virtual bool	functionEntryOnly () const =0
	Return true if the profile only instruments function entries.

virtual bool	hasMemoryProfile () const =0
	Return true if profile includes a memory profile.

virtual InstrProfKind	getProfileKind () const =0
	Returns a BitsetEnum describing the attributes of the profile.

virtual InstrProfSymtab &	getSymtab ()=0
	Return the PGO symtab.

void	accumulateCounts (CountSumOrPercent &Sum, bool IsCS)
	Compute the sum of counts and return in Sum.

bool	isEOF ()
	Return true if the reader has finished reading the profile data.

bool	hasError ()
	Return true if the reader encountered an error reading profiling data.

Error	getError ()
	Get the current error.

Static Public Member Functions
static bool	hasFormat (const MemoryBuffer &DataBuffer)
	Return true if the given buffer is in an indexed instrprof format.

static Expected< std::unique_ptr< IndexedInstrProfReader > >	create (const Twine &Path, vfs::FileSystem &FS, const Twine &RemappingPath="")
	Factory method to create an indexed reader.

static Expected< std::unique_ptr< IndexedInstrProfReader > >	create (std::unique_ptr< MemoryBuffer > Buffer, std::unique_ptr< MemoryBuffer > RemappingBuffer=nullptr)

Static Public Member Functions inherited from llvm::InstrProfReader
static Expected< std::unique_ptr< InstrProfReader > >	create (const Twine &Path, vfs::FileSystem &FS, const InstrProfCorrelator *Correlator=nullptr)
	Factory method to create an appropriately typed reader for the given instrprof file.

static Expected< std::unique_ptr< InstrProfReader > >	create (std::unique_ptr< MemoryBuffer > Buffer, const InstrProfCorrelator *Correlator=nullptr)

Additional Inherited Members
Protected Member Functions inherited from llvm::InstrProfReader
Error	error (instrprof_error Err, const std::string &ErrMsg="")
	Set the current error and return same.

Error	error (Error &&E)

Error	success ()
	Clear the current error and return a successful one.

Protected Attributes inherited from llvm::InstrProfReader
std::unique_ptr< InstrProfSymtab >	Symtab

Detailed Description

Reader for the indexed binary instrprof format.

Definition at line 594 of file InstrProfReader.h.

Constructor & Destructor Documentation

◆ IndexedInstrProfReader() [1/2]

llvm::IndexedInstrProfReader::IndexedInstrProfReader	(	std::unique_ptr< MemoryBuffer >	DataBuffer,
		std::unique_ptr< MemoryBuffer >	RemappingBuffer = `nullptr`
	)

inline

Definition at line 629 of file InstrProfReader.h.

◆ IndexedInstrProfReader() [2/2]

llvm::IndexedInstrProfReader::IndexedInstrProfReader ( const IndexedInstrProfReader & )

delete

Member Function Documentation

◆ create() [1/2]

Expected< std::unique_ptr< IndexedInstrProfReader > > IndexedInstrProfReader::create	(	const Twine &	Path,
		vfs::FileSystem &	FS,
		const Twine &	RemappingPath = `""`
	)

static

Factory method to create an indexed reader.

Definition at line 201 of file InstrProfReader.cpp.

References create(), E, setupMemoryBuffer(), and llvm::Twine::str().

Referenced by annotateAllFunctions(), create(), and llvm::coverage::CoverageMapping::load().

◆ create() [2/2]

Expected< std::unique_ptr< IndexedInstrProfReader > > IndexedInstrProfReader::create	(	std::unique_ptr< MemoryBuffer >	Buffer,
		std::unique_ptr< MemoryBuffer >	RemappingBuffer = `nullptr`
	)

static

Definition at line 223 of file InstrProfReader.cpp.

References llvm::bad_magic, E, hasFormat(), and initializeReader().

◆ functionEntryOnly()

bool llvm::IndexedInstrProfReader::functionEntryOnly ( ) const

inlineoverridevirtual

Return true if the profile only instruments function entries.

Implements llvm::InstrProfReader.

Definition at line 652 of file InstrProfReader.h.

◆ getFunctionCounts()

Error IndexedInstrProfReader::getFunctionCounts	(	StringRef	FuncName,
		uint64_t	FuncHash,
		std::vector< uint64_t > &	Counts
	)

Fill Counts with the profile data for the given function name.

Definition at line 1174 of file InstrProfReader.cpp.

References E, error, getInstrProfRecord(), and llvm::InstrProfReader::success().

◆ getInstrProfRecord()

Expected< InstrProfRecord > IndexedInstrProfReader::getInstrProfRecord	(	StringRef	FuncName,
		uint64_t	FuncHash,
		uint64_t *	MismatchedFuncSum = `nullptr`
	)

Return the NamedInstrProfRecord associated with FuncName and FuncHash.

When return a hash_mismatch error and MismatchedFuncSum is not nullptr, the sum of all counters in the mismatched function will be set to MismatchedFuncSum. If there are multiple instances of mismatched functions, MismatchedFuncSum returns the maximum.

Definition at line 1092 of file InstrProfReader.cpp.

References llvm::Data, error, llvm::NamedInstrProfRecord::hasCSFlagInHash(), llvm::hash_mismatch, I, and llvm::unknown_function.

Referenced by getFunctionCounts().

◆ getMaximumFunctionCount()

uint64_t llvm::IndexedInstrProfReader::getMaximumFunctionCount ( bool UseCS )

inline

Return the maximum of all known function counts.

UseCS indicates whether to use the context-sensitive count.

Definition at line 689 of file InstrProfReader.h.

References assert().

◆ getMemProfRecord()

Expected< memprof::MemProfRecord > IndexedInstrProfReader::getMemProfRecord ( uint64_t FuncNameHash )

Return the memprof record for the function identified by llvm::md5(Name).

Definition at line 1138 of file InstrProfReader.cpp.

References llvm::hash_mismatch, llvm::invalid_prof, and llvm::unknown_function.

◆ getProfileKind()

InstrProfKind llvm::IndexedInstrProfReader::getProfileKind ( ) const

inlineoverridevirtual

Returns a BitsetEnum describing the attributes of the indexed instr profile.

Implements llvm::InstrProfReader.

Definition at line 658 of file InstrProfReader.h.

◆ getSummary()

ProfileSummary & llvm::IndexedInstrProfReader::getSummary ( bool UseCS )

inline

Return the profile summary.

UseCS indicates whether to use the context-sensitive summary.

Definition at line 720 of file InstrProfReader.h.

References assert().

◆ getSymtab()

InstrProfSymtab & IndexedInstrProfReader::getSymtab ( )

overridevirtual

Return the PGO symtab.

There are three different readers: Raw, Text, and Indexed profile readers. The first two types of readers are used only by llvm-profdata tool, while the indexed profile reader is also used by llvm-cov tool and the compiler ( backend or frontend). Since creating PGO symtab can create significant runtime and memory overhead (as it touches data for the whole program), InstrProfSymtab for the indexed profile reader should be created on demand and it is recommended to be only used for dumping purpose with llvm-proftool, not with the compiler.

Implements llvm::InstrProfReader.

Definition at line 1079 of file InstrProfReader.cpp.

References llvm::consumeError(), E, error, llvm::InstrProfReader::Symtab, and llvm::InstrProfError::take().