llvm::StableFunctionMap Struct Reference

#include "llvm/CGData/StableFunctionMap.h"

Classes
struct	EntryStorage
	In addition to the deserialized StableFunctionEntry, the struct stores the offsets of corresponding serialized stable function entries, and a once flag for safe lazy loading in a multithreaded environment. More...
struct	StableFunctionEntry
	An efficient form of StableFunction for fast look-up. More...

Public Types
enum	SizeType { UniqueHashCount , TotalFunctionCount , MergeableFunctionCount }
using	StableFunctionEntries
using	HashFuncsMapType = std::unordered_map<stable_hash, EntryStorage>

Public Member Functions
const HashFuncsMapType &	getFunctionMap () const
	Get the HashToFuncs map for serialization.
ArrayRef< std::string >	getNames () const
	Get the NameToId vector for serialization.
LLVM_ABI unsigned	getIdOrCreateForName (StringRef Name)
	Get an existing ID associated with the given name or create a new ID if it doesn't exist.
LLVM_ABI std::optional< std::string >	getNameForId (unsigned Id) const
	Get the name associated with a given ID.
LLVM_ABI void	insert (const StableFunction &Func)
	Insert a StableFunction object into the function map.
LLVM_ABI void	merge (const StableFunctionMap &OtherMap)
	Merge a OtherMap into this function map.
bool	empty () const
bool	contains (HashFuncsMapType::key_type FunctionHash) const
const StableFunctionEntries &	at (HashFuncsMapType::key_type FunctionHash) const
LLVM_ABI size_t	size (SizeType Type=UniqueHashCount) const
LLVM_ABI void	finalize (bool SkipTrim=false)
	Finalize the stable function map by trimming content.

Friends
struct	StableFunctionMapRecord

Detailed Description

Definition at line 55 of file StableFunctionMap.h.

Member Typedef Documentation

HashFuncsMapType

using llvm::StableFunctionMap::HashFuncsMapType = std::unordered_map<stable_hash, EntryStorage>

Definition at line 105 of file StableFunctionMap.h.

StableFunctionEntries

using llvm::StableFunctionMap::StableFunctionEntries

Initial value:

 
      SmallVector<std::unique_ptr<StableFunctionEntry>>

Definition at line 78 of file StableFunctionMap.h.

Member Enumeration Documentation

SizeType

enum llvm::StableFunctionMap::SizeType

Enumerator
UniqueHashCount
TotalFunctionCount
MergeableFunctionCount

Definition at line 144 of file StableFunctionMap.h.

Member Function Documentation

at()

const StableFunctionMap::StableFunctionEntries & StableFunctionMap::at

(

HashFuncsMapType::key_type

FunctionHash

)

const

Returns

the stable function entries for the given function hash. If the map is lazily loaded, it will deserialize the entries if it is not already done, other requests to the same hash at the same time will be blocked until the entries are deserialized.

Definition at line 138 of file StableFunctionMap.cpp.

Referenced by llvm::GlobalMergeFunc::merge().

contains()

bool llvm::StableFunctionMap::contains ( HashFuncsMapType::key_type FunctionHash ) const

inline

Returns

true if there is an entry for the given function hash. This does not trigger lazy loading.

Definition at line 133 of file StableFunctionMap.h.

Referenced by llvm::GlobalMergeFunc::merge().

empty()

bool llvm::StableFunctionMap::empty ( ) const

inline

Returns

true if there is no stable function entry.

Definition at line 129 of file StableFunctionMap.h.

References size().

finalize()

void StableFunctionMap::finalize

(

bool

SkipTrim = false

)

Finalize the stable function map by trimming content.

Definition at line 242 of file StableFunctionMap.cpp.

References assert(), llvm::SmallVectorImpl< T >::erase(), getNameForId(), I, llvm::Invalid, isProfitable(), P, llvm::SmallVectorTemplateBase< T, bool >::push_back(), removeIdenticalIndexPair(), and llvm::stable_sort().

getFunctionMap()

const StableFunctionMap::HashFuncsMapType & StableFunctionMap::getFunctionMap

(

)

const

Get the HashToFuncs map for serialization.

Definition at line 166 of file StableFunctionMap.cpp.

Referenced by getStableFunctionEntries().

getIdOrCreateForName()

unsigned StableFunctionMap::getIdOrCreateForName

(

StringRef

Name

)

Get an existing ID associated with the given name or create a new ID if it doesn't exist.

Definition at line 65 of file StableFunctionMap.cpp.

References assert().

Referenced by insert(), and merge().

getNameForId()

std::optional< std::string > StableFunctionMap::getNameForId

(

unsigned

Id

)

const

Get the name associated with a given ID.

Definition at line 76 of file StableFunctionMap.cpp.

Referenced by finalize(), getStableFunctionEntries(), and merge().

getNames()

ArrayRef< std::string > llvm::StableFunctionMap::getNames ( ) const

inline

Get the NameToId vector for serialization.

Definition at line 111 of file StableFunctionMap.h.

insert()

void StableFunctionMap::insert

(

const StableFunction &

Func

)

Insert a StableFunction object into the function map.

This method handles the uniquing of string names and create a StableFunctionEntry for insertion.

Definition at line 82 of file StableFunctionMap.cpp.

References assert(), getIdOrCreateForName(), and insert().

Referenced by insert().

merge()

void StableFunctionMap::merge

(

const StableFunctionMap &

OtherMap

)

Merge a OtherMap into this function map.

Definition at line 95 of file StableFunctionMap.cpp.

References assert(), getIdOrCreateForName(), and getNameForId().

size()

size_t StableFunctionMap::size

(

SizeType

Type = UniqueHashCount

)

const

Returns

the size of StableFunctionMap. Type is the type of size to return.

Definition at line 114 of file StableFunctionMap.cpp.

References llvm::Count, llvm_unreachable, MergeableFunctionCount, TotalFunctionCount, and UniqueHashCount.

Referenced by empty().

Friends And Related Symbol Documentation

StableFunctionMapRecord

friend struct StableFunctionMapRecord

friend

Definition at line 190 of file StableFunctionMap.h.

References StableFunctionMapRecord.

Referenced by StableFunctionMapRecord.

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The documentation for this struct was generated from the following files:

• include/llvm/CGData/StableFunctionMap.h
• lib/CGData/StableFunctionMap.cpp