llvm::memprof Namespace Reference

Classes
struct	AllocationInfo
class	CallStack
	Helper class to iterate through stack ids in both metadata (memprof MIB and callsite) and the corresponding ThinLTO summary data structures (CallsiteInfo and MIBInfo). More...
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
class	MemProfReader
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 class	Meta : uint64_t { Start = 0 , MIBEntryDef , Size }

Functions
AllocationType	getAllocType (uint64_t TotalLifetimeAccessDensity, uint64_t AllocCount, uint64_t TotalLifetime)
	Return the allocation type for a given set of memory profile values.
MDNode *	buildCallstackMetadata (ArrayRef< uint64_t > CallStack, LLVMContext &Ctx)
	Build callstack metadata from the provided list of call stack ids.
MDNode *	getMIBStackNode (const MDNode *MIB)
	Returns the stack node from an MIB metadata node.
AllocationType	getMIBAllocType (const MDNode *MIB)
	Returns the allocation type from an MIB metadata node.
std::string	getAllocTypeAttributeString (AllocationType Type)
	Returns the string to use in attributes with the given type.
bool	hasSingleAllocType (uint8_t AllocTypes)
	True if the AllocTypes bitmask contains just a single type.
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 109 of file RawMemProfReader.h.

FrameId

using llvm::memprof::FrameId = typedef uint64_t

Definition at line 138 of file MemProf.h.

MemProfSchema

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

Definition at line 27 of file MemProf.h.

Enumeration Type Documentation

Meta

enum class llvm::memprof::Meta : uint64_t

strong

Enumerator
Start
MIBEntryDef
Size

Definition at line 19 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 65 of file MemoryProfileInfo.cpp.

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

Referenced by addCallsiteMetadata(), and createMIBNode().

getAllocType()

AllocationType llvm::memprof::getAllocType	(	uint64_t	TotalLifetimeAccessDensity,
		uint64_t	AllocCount,
		uint64_t	TotalLifetime
	)

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

Definition at line 44 of file MemoryProfileInfo.cpp.

References MemProfAveLifetimeColdThreshold, MemProfLifetimeAccessDensityColdThreshold, and MemProfMinAveLifetimeAccessDensityHotThreshold.

Referenced by addCallStack().

getAllocTypeAttributeString()

std::string llvm::memprof::getAllocTypeAttributeString

(

AllocationType

Type

)

Returns the string to use in attributes with the given type.

Definition at line 97 of file MemoryProfileInfo.cpp.

References assert(), and llvm_unreachable.

Referenced by addAllocTypeAttribute(), and createMIBNode().

getMIBAllocType()

AllocationType llvm::memprof::getMIBAllocType

(

const MDNode *

MIB

)

Returns the allocation type from an MIB metadata node.

Definition at line 82 of file MemoryProfileInfo.cpp.

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

Referenced by llvm::memprof::CallStackTrie::addCallStack(), and computeFunctionSummary().

getMIBStackNode()

MDNode * llvm::memprof::getMIBStackNode

(

const MDNode *

MIB

)

Returns the stack node from an MIB metadata node.

Definition at line 76 of file MemoryProfileInfo.cpp.

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

Referenced by llvm::memprof::CallStackTrie::addCallStack(), computeFunctionSummary(), and propagateMemProfHelper().

hasSingleAllocType()

bool llvm::memprof::hasSingleAllocType

(

uint8_t

AllocTypes

)

True if the AllocTypes bitmask contains just a single type.

Definition at line 121 of file MemoryProfileInfo.cpp.

References assert(), and llvm::popcount().

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

readMemProfSchema()

Expected< MemProfSchema > llvm::memprof::readMemProfSchema

(

const unsigned char *&

Buffer

)

Definition at line 88 of file MemProf.cpp.

References I, llvm::malformed, Ptr, and Size.

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