#include "ExecutionEngine/MCJIT/MCJIT.h"

Inheritance diagram for llvm::MCJIT:

Public Member Functions
	~MCJIT () override

ExecutionEngine interface implementation
void	addModule (std::unique_ptr< Module > M) override
	Add a Module to the list of modules that we can JIT from.

void	addObjectFile (std::unique_ptr< object::ObjectFile > O) override
	addObjectFile - Add an ObjectFile to the execution engine.

void	addObjectFile (object::OwningBinary< object::ObjectFile > O) override

void	addArchive (object::OwningBinary< object::Archive > O) override
	addArchive - Add an Archive to the execution engine.

bool	removeModule (Module *M) override
	removeModule - Removes a Module from the list of modules, but does not free the module's memory.

Function *	FindFunctionNamed (StringRef FnName) override
	FindFunctionNamed - Search all of the active modules to find the function that defines FnName.

GlobalVariable *	FindGlobalVariableNamed (StringRef Name, bool AllowInternal=false) override
	FindGlobalVariableNamed - Search all of the active modules to find the global variable that defines Name.

void	setObjectCache (ObjectCache *manager) override
	Sets the object manager that MCJIT should use to avoid compilation.

void	setProcessAllSections (bool ProcessAllSections) override
	setProcessAllSections (MCJIT Only): By default, only sections that are "required for execution" are passed to the RTDyldMemoryManager, and other sections are discarded.

void	generateCodeForModule (Module *M) override
	generateCodeForModule - Run code generation for the specified module and load it into memory.

void	finalizeObject () override
	finalizeObject - ensure the module is fully processed and is usable.

virtual void	finalizeModule (Module *)

void	finalizeLoadedModules ()

void	runStaticConstructorsDestructors (bool isDtors) override
	runStaticConstructorsDestructors - This method is used to execute all of the static constructors or destructors for a program.

void *	getPointerToFunction (Function *F) override
	getPointerToFunction - The different EE's represent function bodies in different ways.

GenericValue	runFunction (Function *F, ArrayRef< GenericValue > ArgValues) override
	runFunction - Execute the specified function with the specified arguments, and return the result.

void *	getPointerToNamedFunction (StringRef Name, bool AbortOnFailure=true) override
	getPointerToNamedFunction - This method returns the address of the specified function by using the dlsym function call.

void	mapSectionAddress (const void *LocalAddress, uint64_t TargetAddress) override
	mapSectionAddress - map a section to its target address space value.

void	RegisterJITEventListener (JITEventListener *L) override
	Registers a listener to be called back on various events within the JIT.

void	UnregisterJITEventListener (JITEventListener *L) override

uint64_t	getGlobalValueAddress (const std::string &Name) override
	getGlobalValueAddress - Return the address of the specified global value.

uint64_t	getFunctionAddress (const std::string &Name) override
	getFunctionAddress - Return the address of the specified function.

TargetMachine *	getTargetMachine () override
	Return the target machine (if available).

Public Member Functions inherited from llvm::ExecutionEngine
virtual	~ExecutionEngine ()

virtual void	addModule (std::unique_ptr< Module > M)
	Add a Module to the list of modules that we can JIT from.

virtual void	addObjectFile (std::unique_ptr< object::ObjectFile > O)
	addObjectFile - Add an ObjectFile to the execution engine.

virtual void	addObjectFile (object::OwningBinary< object::ObjectFile > O)

virtual void	addArchive (object::OwningBinary< object::Archive > A)
	addArchive - Add an Archive to the execution engine.

const DataLayout &	getDataLayout () const

virtual bool	removeModule (Module *M)
	removeModule - Removes a Module from the list of modules, but does not free the module's memory.

virtual Function *	FindFunctionNamed (StringRef FnName)
	FindFunctionNamed - Search all of the active modules to find the function that defines FnName.

virtual GlobalVariable *	FindGlobalVariableNamed (StringRef Name, bool AllowInternal=false)
	FindGlobalVariableNamed - Search all of the active modules to find the global variable that defines Name.

virtual GenericValue	runFunction (Function *F, ArrayRef< GenericValue > ArgValues)=0
	runFunction - Execute the specified function with the specified arguments, and return the result.

virtual void *	getPointerToNamedFunction (StringRef Name, bool AbortOnFailure=true)=0
	getPointerToNamedFunction - This method returns the address of the specified function by using the dlsym function call.

virtual void	mapSectionAddress (const void *LocalAddress, uint64_t TargetAddress)
	mapSectionAddress - map a section to its target address space value.

virtual void	generateCodeForModule (Module *M)
	generateCodeForModule - Run code generation for the specified module and load it into memory.

virtual void	finalizeObject ()
	finalizeObject - ensure the module is fully processed and is usable.

bool	hasError () const
	Returns true if an error has been recorded.

void	clearErrorMessage ()
	Clear the error message.

const std::string &	getErrorMessage () const
	Returns the most recent error message.

virtual void	runStaticConstructorsDestructors (bool isDtors)
	runStaticConstructorsDestructors - This method is used to execute all of the static constructors or destructors for a program.

void	runStaticConstructorsDestructors (Module &module, bool isDtors)
	This method is used to execute all of the static constructors or destructors for a particular module.

int	runFunctionAsMain (Function Fn, const std::vector< std::string > &argv, const char const *envp)
	runFunctionAsMain - This is a helper function which wraps runFunction to handle the common task of starting up main with the specified argc, argv, and envp parameters.

void	addGlobalMapping (const GlobalValue GV, void Addr)
	addGlobalMapping - Tell the execution engine that the specified global is at the specified location.

void	addGlobalMapping (StringRef Name, uint64_t Addr)

void	clearAllGlobalMappings ()
	clearAllGlobalMappings - Clear all global mappings and start over again, for use in dynamic compilation scenarios to move globals.

void	clearGlobalMappingsFromModule (Module *M)
	clearGlobalMappingsFromModule - Clear all global mappings that came from a particular module, because it has been removed from the JIT.

uint64_t	updateGlobalMapping (const GlobalValue GV, void Addr)
	updateGlobalMapping - Replace an existing mapping for GV with a new address.

uint64_t	updateGlobalMapping (StringRef Name, uint64_t Addr)

uint64_t	getAddressToGlobalIfAvailable (StringRef S)
	getAddressToGlobalIfAvailable - This returns the address of the specified global symbol.

void *	getPointerToGlobalIfAvailable (StringRef S)
	getPointerToGlobalIfAvailable - This returns the address of the specified global value if it is has already been codegen'd, otherwise it returns null.

void *	getPointerToGlobalIfAvailable (const GlobalValue *GV)

void *	getPointerToGlobal (const GlobalValue *GV)
	getPointerToGlobal - This returns the address of the specified global value.

virtual void *	getPointerToFunction (Function *F)=0
	getPointerToFunction - The different EE's represent function bodies in different ways.

virtual void *	getPointerToFunctionOrStub (Function *F)
	getPointerToFunctionOrStub - If the specified function has been code-gen'd, return a pointer to the function.

virtual uint64_t	getGlobalValueAddress (const std::string &Name)
	getGlobalValueAddress - Return the address of the specified global value.

virtual uint64_t	getFunctionAddress (const std::string &Name)
	getFunctionAddress - Return the address of the specified function.

const GlobalValue *	getGlobalValueAtAddress (void *Addr)
	getGlobalValueAtAddress - Return the LLVM global value object that starts at the specified address.

void	StoreValueToMemory (const GenericValue &Val, GenericValue Ptr, Type Ty)
	StoreValueToMemory - Stores the data in Val of type Ty at address Ptr.

void	InitializeMemory (const Constant Init, void Addr)

virtual void *	getOrEmitGlobalVariable (const GlobalVariable *GV)
	getOrEmitGlobalVariable - Return the address of the specified global variable, possibly emitting it to memory if needed.

virtual void	RegisterJITEventListener (JITEventListener *)
	Registers a listener to be called back on various events within the JIT.

virtual void	UnregisterJITEventListener (JITEventListener *)

virtual void	setObjectCache (ObjectCache *)
	Sets the pre-compiled object cache.

virtual void	setProcessAllSections (bool ProcessAllSections)
	setProcessAllSections (MCJIT Only): By default, only sections that are "required for execution" are passed to the RTDyldMemoryManager, and other sections are discarded.

virtual TargetMachine *	getTargetMachine ()
	Return the target machine (if available).

void	DisableLazyCompilation (bool Disabled=true)
	DisableLazyCompilation - When lazy compilation is off (the default), the JIT will eagerly compile every function reachable from the argument to getPointerToFunction.

bool	isCompilingLazily () const

void	DisableGVCompilation (bool Disabled=true)
	DisableGVCompilation - If called, the JIT will abort if it's asked to allocate space and populate a GlobalVariable that is not internal to the module.

bool	isGVCompilationDisabled () const

void	DisableSymbolSearching (bool Disabled=true)
	DisableSymbolSearching - If called, the JIT will not try to lookup unknown symbols with dlsym.

bool	isSymbolSearchingDisabled () const

void	setVerifyModules (bool Verify)
	Enable/Disable IR module verification.

bool	getVerifyModules () const

void	InstallLazyFunctionCreator (FunctionCreator C)
	InstallLazyFunctionCreator - If an unknown function is needed, the specified function pointer is invoked to create it.

(Private) Registration Interfaces
JITSymbol	findSymbol (const std::string &Name, bool CheckFunctionsOnly)

uint64_t	getSymbolAddress (const std::string &Name, bool CheckFunctionsOnly)

static void	Register ()

static ExecutionEngine *	createJIT (std::unique_ptr< Module > M, std::string *ErrorStr, std::shared_ptr< MCJITMemoryManager > MemMgr, std::shared_ptr< LegacyJITSymbolResolver > Resolver, std::unique_ptr< TargetMachine > TM)

std::unique_ptr< MemoryBuffer >	emitObject (Module *M)
	emitObject – Generate a JITed object in memory from the specified module Currently, MCJIT only supports a single module and the module passed to this function call is expected to be the contained module.

void	notifyObjectLoaded (const object::ObjectFile &Obj, const RuntimeDyld::LoadedObjectInfo &L)

void	notifyFreeingObject (const object::ObjectFile &Obj)

JITSymbol	findExistingSymbol (const std::string &Name)

Module *	findModuleForSymbol (const std::string &Name, bool CheckFunctionsOnly)

Additional Inherited Members
Public Attributes inherited from llvm::ExecutionEngine
sys::Mutex	lock
	lock - This lock protects the ExecutionEngine and MCJIT classes.

Protected Member Functions inherited from llvm::ExecutionEngine
virtual char *	getMemoryForGV (const GlobalVariable *GV)
	getMemoryforGV - Allocate memory for a global variable.

std::string	getMangledName (const GlobalValue *GV)
	getMangledName - Get mangled name.

	ExecutionEngine (DataLayout DL)

	ExecutionEngine (DataLayout DL, std::unique_ptr< Module > M)

	ExecutionEngine (std::unique_ptr< Module > M)

void	emitGlobals ()
	EmitGlobals - Emit all of the global variables to memory, storing their addresses into GlobalAddress.

void	emitGlobalVariable (const GlobalVariable *GV)

GenericValue	getConstantValue (const Constant *C)
	Converts a Constant* into a GenericValue, including handling of ConstantExpr values.

void	LoadValueFromMemory (GenericValue &Result, GenericValue Ptr, Type Ty)
	FIXME: document.

Protected Attributes inherited from llvm::ExecutionEngine
SmallVector< std::unique_ptr< Module >, 1 >	Modules
	The list of Modules that we are JIT'ing from.

FunctionCreator	LazyFunctionCreator
	LazyFunctionCreator - If an unknown function is needed, this function pointer is invoked to create it.

std::string	ErrMsg

Static Protected Attributes inherited from llvm::ExecutionEngine
static ExecutionEngine (	MCJITCtor )(std::unique_ptr< Module > M, std::string *ErrorStr, std::shared_ptr< MCJITMemoryManager > MM, std::shared_ptr< LegacyJITSymbolResolver > SR, std::unique_ptr< TargetMachine > TM) = nullptr

static ExecutionEngine (	InterpCtor )(std::unique_ptr< Module > M, std::string *ErrorStr) =nullptr

Detailed Description

Definition at line 66 of file MCJIT.h.

Constructor & Destructor Documentation

◆ ~MCJIT()

MCJIT::~MCJIT ( )

override

Definition at line 92 of file MCJIT.cpp.

References llvm::RuntimeDyld::deregisterEHFrames(), llvm::ExecutionEngine::lock, and notifyFreeingObject().

Member Function Documentation

◆ addArchive()

void MCJIT::addArchive ( object::OwningBinary< object::Archive > A )

overridevirtual

addArchive - Add an Archive to the execution engine.

This method is only supported by MCJIT. MCJIT will use the archive to resolve external symbols in objects it is loading. If a symbol is found in the Archive the contained object file will be extracted (in memory) and loaded for possible execution.

Reimplemented from llvm::ExecutionEngine.

Definition at line 136 of file MCJIT.cpp.

References A.

◆ addModule()

void MCJIT::addModule ( std::unique_ptr< Module > M )

overridevirtual

Add a Module to the list of modules that we can JIT from.

Reimplemented from llvm::ExecutionEngine.

Definition at line 104 of file MCJIT.cpp.

References llvm::ExecutionEngine::getDataLayout(), and llvm::ExecutionEngine::lock.

◆ addObjectFile() [1/2]

void MCJIT::addObjectFile ( object::OwningBinary< object::ObjectFile > O )

overridevirtual

Reimplemented from llvm::ExecutionEngine.

Definition at line 128 of file MCJIT.cpp.

References addObjectFile(), and llvm::object::OwningBinary< T >::takeBinary().

◆ addObjectFile() [2/2]

void MCJIT::addObjectFile ( std::unique_ptr< object::ObjectFile > O )

overridevirtual

addObjectFile - Add an ObjectFile to the execution engine.

This method is only supported by MCJIT. MCJIT will immediately load the object into memory and adds its symbols to the list used to resolve external symbols while preparing other objects for execution.

Objects added using this function will not be made executable until needed by another object.

MCJIT will take ownership of the ObjectFile.

Reimplemented from llvm::ExecutionEngine.

Definition at line 118 of file MCJIT.cpp.

References llvm::RuntimeDyld::getErrorString(), llvm::RuntimeDyld::hasError(), llvm::RuntimeDyld::loadObject(), notifyObjectLoaded(), and llvm::report_fatal_error().

Referenced by addObjectFile(), and findSymbol().

◆ createJIT()

ExecutionEngine * MCJIT::createJIT	(	std::unique_ptr< Module >	M,
		std::string *	ErrorStr,
		std::shared_ptr< MCJITMemoryManager >	MemMgr,
		std::shared_ptr< LegacyJITSymbolResolver >	Resolver,
		std::unique_ptr< TargetMachine >	TM
	)

static

Definition at line 44 of file MCJIT.cpp.

References llvm::sys::DynamicLibrary::LoadLibraryPermanently().

Referenced by Register().

◆ emitObject()

std::unique_ptr< MemoryBuffer > MCJIT::emitObject ( Module * M )

protected

emitObject – Generate a JITed object in memory from the specified module Currently, MCJIT only supports a single module and the module passed to this function call is expected to be the contained module.

The module is passed as a parameter here to prepare for multiple module support in the future.

Definition at line 145 of file MCJIT.cpp.

References assert(), llvm::cantFail(), llvm::ExecutionEngine::getVerifyModules(), llvm::ExecutionEngine::lock, llvm::ObjectCache::notifyObjectCompiled(), llvm::report_fatal_error(), and llvm::legacy::PassManager::run().

Referenced by generateCodeForModule().

◆ finalizeLoadedModules()

void MCJIT::finalizeLoadedModules ( )

Definition at line 237 of file MCJIT.cpp.

References llvm::ExecutionEngine::ErrMsg, llvm::RuntimeDyld::getErrorString(), llvm::RuntimeDyld::hasError(), llvm::ExecutionEngine::lock, llvm::RuntimeDyld::registerEHFrames(), llvm::RuntimeDyld::resolveRelocations(), and llvm::StringRef::str().

Referenced by finalizeModule(), finalizeObject(), getFunctionAddress(), and getGlobalValueAddress().

◆ finalizeModule()

void MCJIT::finalizeModule ( Module * M )

virtual

Definition at line 270 of file MCJIT.cpp.

References assert(), finalizeLoadedModules(), generateCodeForModule(), and llvm::ExecutionEngine::lock.

Referenced by runFunction().

◆ finalizeObject()

void MCJIT::finalizeObject ( )

overridevirtual

finalizeObject - ensure the module is fully processed and is usable.

It is the user-level function for completing the process of making the object usable for execution. It should be called after sections within an object have been relocated using mapSectionAddress. When this method is called the MCJIT execution engine will reapply relocations for a loaded object. Is it OK to finalize a set of modules, add modules and finalize again.

Reimplemented from llvm::ExecutionEngine.

Definition at line 257 of file MCJIT.cpp.

References finalizeLoadedModules(), generateCodeForModule(), and llvm::ExecutionEngine::lock.

◆ findExistingSymbol()

JITSymbol MCJIT::findExistingSymbol ( const std::string & Name )

protected

Definition at line 283 of file MCJIT.cpp.

References Addr, llvm::JITSymbolFlags::Exported, llvm::ExecutionEngine::getPointerToGlobalIfAvailable(), llvm::RuntimeDyld::getSymbol(), and Name.

Referenced by findSymbol().

◆ FindFunctionNamed()

Function * MCJIT::FindFunctionNamed ( StringRef FnName )

overridevirtual

FindFunctionNamed - Search all of the active modules to find the function that defines FnName.

This is very slow operation and shouldn't be used for general code.

Reimplemented from llvm::ExecutionEngine.

Definition at line 486 of file MCJIT.cpp.

References F.

◆ FindGlobalVariableNamed()

GlobalVariable * MCJIT::FindGlobalVariableNamed	(	StringRef	Name,
		bool	AllowInternal = `false`
	)

overridevirtual

FindGlobalVariableNamed - Search all of the active modules to find the global variable that defines Name.

This is very slow operation and shouldn't be used for general code.

Reimplemented from llvm::ExecutionEngine.

Definition at line 498 of file MCJIT.cpp.

References Name.

◆ findModuleForSymbol()

Module * MCJIT::findModuleForSymbol	(	const std::string &	Name,
		bool	CheckFunctionsOnly
	)

protected

Definition at line 292 of file MCJIT.cpp.

References F, G, llvm::ExecutionEngine::getDataLayout(), I, llvm::ExecutionEngine::lock, Name, and llvm::StringRef::substr().

Referenced by findSymbol().

◆ findSymbol()

JITSymbol MCJIT::findSymbol	(	const std::string &	Name,
		bool	CheckFunctionsOnly
	)

Definition at line 336 of file MCJIT.cpp.

References A, addObjectFile(), Addr, llvm::consumeError(), llvm::JITSymbolFlags::Exported, findExistingSymbol(), findModuleForSymbol(), generateCodeForModule(), llvm::Expected< T >::get(), llvm::ExecutionEngine::LazyFunctionCreator, llvm::ExecutionEngine::lock, Name, llvm::report_fatal_error(), Sym, and llvm::Expected< T >::takeError().

Referenced by llvm::LinkingSymbolResolver::findSymbol(), and getSymbolAddress().

◆ generateCodeForModule()

void MCJIT::generateCodeForModule ( Module * M )

overridevirtual

generateCodeForModule - Run code generation for the specified module and load it into memory.

When this function has completed, all code and data for the specified module, and any module on which this module depends, will be generated and loaded into memory, but relocations will not yet have been applied and all memory will be readable and writable but not executable.

This function is primarily useful when generating code for an external target, allowing the client an opportunity to remap section addresses before relocations are applied. Clients that intend to execute code locally can use the getFunctionAddress call, which will generate code and apply final preparations all in one step.

This method has no effect for the interpreter.

Reimplemented from llvm::ExecutionEngine.

Definition at line 188 of file MCJIT.cpp.

References assert(), llvm::object::ObjectFile::createObjectFile(), emitObject(), llvm::Expected< T >::get(), llvm::ExecutionEngine::getDataLayout(), llvm::RuntimeDyld::getErrorString(), llvm::ObjectCache::getObject(), llvm::RuntimeDyld::hasError(), llvm::RuntimeDyld::loadObject(), llvm::ExecutionEngine::lock, llvm::logAllUnhandledErrors(), notifyObjectLoaded(), OS, llvm::report_fatal_error(), and llvm::Expected< T >::takeError().

Referenced by finalizeModule(), finalizeObject(), findSymbol(), and getPointerToFunction().

◆ getFunctionAddress()

uint64_t MCJIT::getFunctionAddress ( const std::string & Name )

overridevirtual

getFunctionAddress - Return the address of the specified function.

This may involve code generation.

Reimplemented from llvm::ExecutionEngine.

Definition at line 401 of file MCJIT.cpp.

References finalizeLoadedModules(), getSymbolAddress(), llvm::ExecutionEngine::lock, and Name.

◆ getGlobalValueAddress()

uint64_t MCJIT::getGlobalValueAddress ( const std::string & Name )

overridevirtual

getGlobalValueAddress - Return the address of the specified global value.

This may involve code generation.

This function should not be called with the interpreter engine.

Reimplemented from llvm::ExecutionEngine.

Definition at line 393 of file MCJIT.cpp.

References finalizeLoadedModules(), getSymbolAddress(), llvm::ExecutionEngine::lock, and Name.

◆ getPointerToFunction()

void * MCJIT::getPointerToFunction ( Function * F )

overridevirtual

getPointerToFunction - The different EE's represent function bodies in different ways.

They should each implement this to say what a function pointer should look like. When F is destroyed, the ExecutionEngine will remove its global mapping and free any machine code. Be sure no threads are running inside F when that happens.

This function is deprecated for the MCJIT execution engine. Use getFunctionAddress instead.

Implements llvm::ExecutionEngine.

Definition at line 410 of file MCJIT.cpp.

References Addr, F, generateCodeForModule(), llvm::JITEvaluatedSymbol::getAddress(), getPointerToNamedFunction(), llvm::RuntimeDyld::getSymbol(), llvm::ExecutionEngine::lock, Name, and llvm::ExecutionEngine::updateGlobalMapping().

Referenced by runFunction().

◆ getPointerToNamedFunction()

void * MCJIT::getPointerToNamedFunction	(	StringRef	Name,
		bool	AbortOnFailure = `true`
	)

overridevirtual

getPointerToNamedFunction - This method returns the address of the specified function by using the dlsym function call.

As such it is only useful for resolving library symbols, not code generated symbols.

If AbortOnFailure is false and no function with the given name is found, this function silently returns a null pointer. Otherwise, it prints a message to stderr and aborts.

If a LazyFunctionCreator is installed, use it to get/create the function.

Implements llvm::ExecutionEngine.

Definition at line 613 of file MCJIT.cpp.

References llvm::ExecutionEngine::isSymbolSearchingDisabled(), llvm::ExecutionEngine::LazyFunctionCreator, Name, llvm::report_fatal_error(), and Sym.

Referenced by getPointerToFunction().

◆ getSymbolAddress()

uint64_t MCJIT::getSymbolAddress	(	const std::string &	Name,
		bool	CheckFunctionsOnly
	)

Definition at line 319 of file MCJIT.cpp.

References findSymbol(), llvm::ExecutionEngine::getDataLayout(), llvm::Mangler::getNameWithPrefix(), Name, llvm::report_fatal_error(), and Sym.

Referenced by getFunctionAddress(), and getGlobalValueAddress().

◆ getTargetMachine()

TargetMachine * llvm::MCJIT::getTargetMachine ( )

inlineoverridevirtual

Return the target machine (if available).

Reimplemented from llvm::ExecutionEngine.

Definition at line 285 of file MCJIT.h.

◆ mapSectionAddress()

void llvm::MCJIT::mapSectionAddress	(	const void *	LocalAddress,
		uint64_t	TargetAddress
	)

inlineoverridevirtual

mapSectionAddress - map a section to its target address space value.

Map the address of a JIT section as returned from the memory manager to the address in the target process as the running code will see it. This is the address which will be used for relocation resolution.

Reimplemented from llvm::ExecutionEngine.

Definition at line 272 of file MCJIT.h.

References llvm::RuntimeDyld::mapSectionAddress().

◆ notifyFreeingObject()

void MCJIT::notifyFreeingObject ( const object::ObjectFile & Obj )

protected

Definition at line 663 of file MCJIT.cpp.

References llvm::StringRef::data(), llvm::object::Binary::getData(), and llvm::ExecutionEngine::lock.

Referenced by ~MCJIT().

◆ notifyObjectLoaded()

void MCJIT::notifyObjectLoaded	(	const object::ObjectFile &	Obj,
		const RuntimeDyld::LoadedObjectInfo &	L
	)

protected

Definition at line 653 of file MCJIT.cpp.

References llvm::StringRef::data(), llvm::object::Binary::getData(), and llvm::ExecutionEngine::lock.

Referenced by addObjectFile(), and generateCodeForModule().

◆ Register()

static void llvm::MCJIT::Register ( )

inlinestatic

Definition at line 291 of file MCJIT.h.

References createJIT(), and llvm::ExecutionEngine::MCJITCtor.

◆ RegisterJITEventListener()

void MCJIT::RegisterJITEventListener ( JITEventListener * )

overridevirtual

Registers a listener to be called back on various events within the JIT.

See JITEventListener.h for more details. Does not take ownership of the argument. The argument may be NULL, in which case these functions do nothing.

Reimplemented from llvm::ExecutionEngine.

Definition at line 635 of file MCJIT.cpp.

References llvm::ExecutionEngine::lock.

◆ removeModule()

bool MCJIT::removeModule ( Module * M )

overridevirtual

removeModule - Removes a Module from the list of modules, but does not free the module's memory.

Returns true if M is found, in which case the caller assumes responsibility for deleting the module.

Reimplemented from llvm::ExecutionEngine.

Definition at line 113 of file MCJIT.cpp.

References llvm::ExecutionEngine::lock.

◆ runFunction()

GenericValue MCJIT::runFunction	(	Function *	F,
		ArrayRef< GenericValue >	ArgValues
	)

overridevirtual

runFunction - Execute the specified function with the specified arguments, and return the result.

For MCJIT execution engines, clients are encouraged to use the "GetFunctionAddress" method (rather than runFunction) and cast the returned uint64_t to the desired function pointer type. However, for backwards compatibility MCJIT's implementation can execute 'main-like' function (i.e. those returning void or int, and taking either no arguments or (int, char*[])).

Implements llvm::ExecutionEngine.

Definition at line 510 of file MCJIT.cpp.

References assert(), llvm::BitWidth, llvm::Type::DoubleTyID, llvm::GenericValue::DoubleVal, llvm::ArrayRef< T >::empty(), F, finalizeModule(), llvm::Type::FloatTyID, llvm::GenericValue::FloatVal, llvm::Type::FP128TyID, llvm::FunctionType::getNumParams(), llvm::FunctionType::getParamType(), getPointerToFunction(), llvm::FunctionType::getReturnType(), llvm::GVTOP(), llvm::Type::IntegerTyID, llvm::GenericValue::IntVal, llvm::Type::isIntegerTy(), llvm::Type::isPointerTy(), llvm::FunctionType::isVarArg(), llvm_unreachable, llvm::Type::PointerTyID, llvm::Type::PPC_FP128TyID, llvm::PTOGV(), llvm::report_fatal_error(), RetTy, llvm::ArrayRef< T >::size(), llvm::Type::VoidTyID, and llvm::Type::X86_FP80TyID.

◆ runStaticConstructorsDestructors()

void MCJIT::runStaticConstructorsDestructors ( bool isDtors )

overridevirtual

runStaticConstructorsDestructors - This method is used to execute all of the static constructors or destructors for a program.

Parameters

isDtors - Run the destructors instead of constructors.

Reimplemented from llvm::ExecutionEngine.

Definition at line 452 of file MCJIT.cpp.

◆ setObjectCache()

void MCJIT::setObjectCache ( ObjectCache * manager )

overridevirtual

Sets the object manager that MCJIT should use to avoid compilation.

Reimplemented from llvm::ExecutionEngine.

Definition at line 140 of file MCJIT.cpp.

References llvm::ExecutionEngine::lock.

◆ setProcessAllSections()

void llvm::MCJIT::setProcessAllSections ( bool ProcessAllSections )

inlineoverridevirtual

setProcessAllSections (MCJIT Only): By default, only sections that are "required for execution" are passed to the RTDyldMemoryManager, and other sections are discarded.

Passing 'true' to this method will cause RuntimeDyld to pass all sections to its RTDyldMemoryManager regardless of whether they are "required to execute" in the usual sense.

Rationale: Some MCJIT clients want to be able to inspect metadata sections (e.g. Dwarf, Stack-maps) to enable functionality or analyze performance. Passing these sections to the memory manager allows the client to make policy about the relevant sections, rather than having MCJIT do it.

Reimplemented from llvm::ExecutionEngine.

Definition at line 227 of file MCJIT.h.

References llvm::RuntimeDyld::setProcessAllSections().

◆ UnregisterJITEventListener()

void MCJIT::UnregisterJITEventListener ( JITEventListener * L )

overridevirtual

Reimplemented from llvm::ExecutionEngine.

Definition at line 642 of file MCJIT.cpp.

References llvm::find(), I, llvm::ExecutionEngine::lock, llvm::reverse(), and std::swap().

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

lib/ExecutionEngine/MCJIT/MCJIT.h
lib/ExecutionEngine/MCJIT/MCJIT.cpp

Public Member Functions

(Private) Registration Interfaces

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~MCJIT()

Member Function Documentation

◆ addArchive()

◆ addModule()

◆ addObjectFile() [1/2]

◆ addObjectFile() [2/2]

◆ createJIT()

◆ emitObject()

◆ finalizeLoadedModules()

◆ finalizeModule()

◆ finalizeObject()

◆ findExistingSymbol()

◆ FindFunctionNamed()

◆ FindGlobalVariableNamed()

◆ findModuleForSymbol()

◆ findSymbol()

◆ generateCodeForModule()

◆ getFunctionAddress()

◆ getGlobalValueAddress()

◆ getPointerToFunction()

◆ getPointerToNamedFunction()

◆ getSymbolAddress()

◆ getTargetMachine()

◆ mapSectionAddress()

◆ notifyFreeingObject()

◆ notifyObjectLoaded()

◆ Register()

◆ RegisterJITEventListener()

◆ removeModule()

◆ runFunction()

◆ runStaticConstructorsDestructors()

◆ setObjectCache()

◆ setProcessAllSections()

◆ UnregisterJITEventListener()