llvm::memprof Namespace Reference

Classes
struct	AllocationInfo
class	CallStackTrie
	Class to build a trie of call stack contexts for a particular profiled allocation call, along with their associated allocation types. More...
struct	Frame
class	FrameLookupTrait
class	FrameWriterTrait
struct	IndexedAllocationInfo
struct	IndexedMemProfRecord
struct	MemProfRecord
struct	PortableMemInfoBlock
class	RawMemProfReader
class	RecordLookupTrait
class	RecordWriterTrait

Typedefs
using	MemProfSchema = llvm::SmallVector< Meta, static_cast< int >(Meta::Size)>
using	FrameId = uint64_t
using	CallStackMap = llvm::DenseMap< uint64_t, llvm::SmallVector< uint64_t > >

Enumerations
enum	AllocationType : uint8_t { AllocationType::None = 0, AllocationType::NotCold = 1, AllocationType::Cold = 2 }
enum	Meta : uint64_t { Meta::Start = 0, Meta::MIBEntryDef, Meta::Size }

Functions
AllocationType	getAllocType (uint64_t MaxAccessCount, uint64_t MinSize, uint64_t MinLifetime)
	Return the allocation type for a given set of memory profile values. More...
MDNode *	buildCallstackMetadata (ArrayRef< uint64_t > CallStack, LLVMContext &Ctx)
	Build callstack metadata from the provided list of call stack ids. More...
MDNode *	getMIBStackNode (const MDNode *MIB)
	Returns the stack node from an MIB metadata node. More...
AllocationType	getMIBAllocType (const MDNode *MIB)
	Returns the allocation type from an MIB metadata node. More...
Expected< MemProfSchema >	readMemProfSchema (const unsigned char *&Buffer)

Typedef Documentation

CallStackMap

using llvm::memprof::CallStackMap = typedef llvm::DenseMap<uint64_t, llvm::SmallVector<uint64_t> >

Definition at line 36 of file RawMemProfReader.h.

FrameId

using llvm::memprof::FrameId = typedef uint64_t

Definition at line 137 of file MemProf.h.

MemProfSchema

using llvm::memprof::MemProfSchema = typedef llvm::SmallVector<Meta, static_cast<int>(Meta::Size)>

Definition at line 26 of file MemProf.h.

Enumeration Type Documentation

AllocationType

enum llvm::memprof::AllocationType : uint8_t

strong

Enumerator
None
NotCold
Cold

Definition at line 30 of file MemoryProfileInfo.h.

Meta

enum llvm::memprof::Meta : uint64_t

strong

Enumerator
Start
MIBEntryDef
Size

Definition at line 18 of file MemProf.h.

Function Documentation

buildCallstackMetadata()

MDNode * llvm::memprof::buildCallstackMetadata	(	ArrayRef< uint64_t >	CallStack,
		LLVMContext &	Ctx
	)

Build callstack metadata from the provided list of call stack ids.

Returns the resulting metadata node.

Definition at line 44 of file MemoryProfileInfo.cpp.

References llvm::ConstantInt::get(), llvm::ValueAsMetadata::get(), llvm::MDNode::get(), and llvm::Type::getInt64Ty().

Referenced by addCallsiteMetadata(), and createMIBNode().

getAllocType()

AllocationType llvm::memprof::getAllocType	(	uint64_t	MaxAccessCount,
		uint64_t	MinSize,
		uint64_t	MinLifetime
	)

Return the allocation type for a given set of memory profile values.

Definition at line 34 of file MemoryProfileInfo.cpp.

References Cold, MemProfAccessesPerByteColdThreshold, MemProfMinLifetimeColdThreshold, and NotCold.

Referenced by addCallStack().

getMIBAllocType()

AllocationType llvm::memprof::getMIBAllocType

(

const MDNode *

MIB

)

Returns the allocation type from an MIB metadata node.

Definition at line 61 of file MemoryProfileInfo.cpp.

References assert(), Cold, llvm::MDNode::getNumOperands(), llvm::MDNode::getOperand(), and NotCold.

Referenced by llvm::memprof::CallStackTrie::addCallStack().

getMIBStackNode()

MDNode * llvm::memprof::getMIBStackNode

(

const MDNode *

MIB

)

Returns the stack node from an MIB metadata node.

Definition at line 55 of file MemoryProfileInfo.cpp.

References assert(), llvm::MDNode::getNumOperands(), and llvm::MDNode::getOperand().

Referenced by llvm::memprof::CallStackTrie::addCallStack().

readMemProfSchema()

Expected< MemProfSchema > llvm::memprof::readMemProfSchema

(

const unsigned char *&

Buffer

)

Definition at line 84 of file MemProf.cpp.

References I, llvm::malformed, Ptr, Size, and support().

Referenced by llvm::IndexedInstrProfReader::readHeader().