implements a set of functionality in the TargetMachine class for targets that make use of the independent code generator (CodeGen) library. More...

#include "llvm/CodeGen/CodeGenTargetMachineImpl.h"

Inheritance diagram for llvm::CodeGenTargetMachineImpl:

[legend]

Public Member Functions
TargetTransformInfo	getTargetTransformInfo (const Function &F) const override
	Get a TargetTransformInfo implementation for the target.
virtual TargetPassConfig *	createPassConfig (PassManagerBase &PM) override
	Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of CodeGen passes.
bool	addPassesToEmitFile (PassManagerBase &PM, raw_pwrite_stream &Out, raw_pwrite_stream DwoOut, CodeGenFileType FileType, bool DisableVerify=true, MachineModuleInfoWrapperPass MMIWP=nullptr) override
	Add passes to the specified pass manager to get the specified file emitted.
bool	addPassesToEmitMC (PassManagerBase &PM, MCContext *&Ctx, raw_pwrite_stream &Out, bool DisableVerify=true) override
	Add passes to the specified pass manager to get machine code emitted with the MCJIT.
bool	addAsmPrinter (PassManagerBase &PM, raw_pwrite_stream &Out, raw_pwrite_stream *DwoOut, CodeGenFileType FileType, MCContext &Context) override
	Adds an AsmPrinter pass to the pipeline that prints assembly or machine code from the MI representation.
Expected< std::unique_ptr< MCStreamer > >	createMCStreamer (raw_pwrite_stream &Out, raw_pwrite_stream *DwoOut, CodeGenFileType FileType, MCContext &Ctx) override
Public Member Functions inherited from llvm::TargetMachine
	TargetMachine (const TargetMachine &)=delete
void	operator= (const TargetMachine &)=delete
virtual	~TargetMachine ()
const Target &	getTarget () const
const Triple &	getTargetTriple () const
StringRef	getTargetCPU () const
StringRef	getTargetFeatureString () const
void	setTargetFeatureString (StringRef FS)
virtual const TargetSubtargetInfo *	getSubtargetImpl (const Function &) const
	Virtual method implemented by subclasses that returns a reference to that target's TargetSubtargetInfo-derived member variable.
virtual TargetLoweringObjectFile *	getObjFileLowering () const
virtual MachineFunctionInfo *	createMachineFunctionInfo (BumpPtrAllocator &Allocator, const Function &F, const TargetSubtargetInfo *STI) const
	Create the target's instance of MachineFunctionInfo.
virtual ScheduleDAGInstrs *	createMachineScheduler (MachineSchedContext *C) const
	Create an instance of ScheduleDAGInstrs to be run within the standard MachineScheduler pass for this function and target at the current optimization level.
virtual ScheduleDAGInstrs *	createPostMachineScheduler (MachineSchedContext *C) const
	Similar to createMachineScheduler but used when postRA machine scheduling is enabled.
virtual yaml::MachineFunctionInfo *	createDefaultFuncInfoYAML () const
	Allocate and return a default initialized instance of the YAML representation for the MachineFunctionInfo.
virtual yaml::MachineFunctionInfo *	convertFuncInfoToYAML (const MachineFunction &MF) const
	Allocate and initialize an instance of the YAML representation of the MachineFunctionInfo.
virtual bool	parseMachineFunctionInfo (const yaml::MachineFunctionInfo &, PerFunctionMIParsingState &PFS, SMDiagnostic &Error, SMRange &SourceRange) const
	Parse out the target's MachineFunctionInfo from the YAML reprsentation.
template<typename STC>
const STC &	getSubtarget (const Function &F) const
	This method returns a pointer to the specified type of TargetSubtargetInfo.
const DataLayout	createDataLayout () const
	Create a DataLayout.
bool	isCompatibleDataLayout (const DataLayout &Candidate) const
	Test if a DataLayout if compatible with the CodeGen for this target.
unsigned	getPointerSize (unsigned AS) const
	Get the pointer size for this target.
unsigned	getPointerSizeInBits (unsigned AS) const
unsigned	getProgramPointerSize () const
unsigned	getAllocaPointerSize () const
void	resetTargetOptions (const Function &F) const
	Reset the target options based on the function's attributes.
const MCAsmInfo *	getMCAsmInfo () const
	Return target specific asm information.
const MCRegisterInfo *	getMCRegisterInfo () const
const MCInstrInfo *	getMCInstrInfo () const
const MCSubtargetInfo *	getMCSubtargetInfo () const
ExceptionHandling	getExceptionModel () const
	Return the ExceptionHandling to use, considering TargetOptions and the Triple's default.
bool	requiresStructuredCFG () const
void	setRequiresStructuredCFG (bool Value)
Reloc::Model	getRelocationModel () const
	Returns the code generation relocation model.
CodeModel::Model	getCodeModel () const
	Returns the code model.
uint64_t	getMaxCodeSize () const
	Returns the maximum code size possible under the code model.
void	setCodeModel (CodeModel::Model CM)
	Set the code model.
void	setLargeDataThreshold (uint64_t LDT)
bool	isLargeGlobalValue (const GlobalValue *GV) const
bool	isPositionIndependent () const
bool	shouldAssumeDSOLocal (const GlobalValue *GV) const
bool	useEmulatedTLS () const
	Returns true if this target uses emulated TLS.
bool	useTLSDESC () const
	Returns true if this target uses TLS Descriptors.
TLSModel::Model	getTLSModel (const GlobalValue *GV) const
	Returns the TLS model which should be used for the given global variable.
CodeGenOptLevel	getOptLevel () const
	Returns the optimization level: None, Less, Default, or Aggressive.
void	setOptLevel (CodeGenOptLevel Level)
	Overrides the optimization level.
void	setFastISel (bool Enable)
bool	getO0WantsFastISel ()
void	setO0WantsFastISel (bool Enable)
void	setGlobalISel (bool Enable)
void	setGlobalISelAbort (GlobalISelAbortMode Mode)
void	setMachineOutliner (bool Enable)
void	setSupportsDefaultOutlining (bool Enable)
void	setSupportsDebugEntryValues (bool Enable)
void	setCFIFixup (bool Enable)
bool	getAIXExtendedAltivecABI () const
bool	getUniqueSectionNames () const
bool	getUniqueBasicBlockSectionNames () const
	Return true if unique basic block section names must be generated.
bool	getSeparateNamedSections () const
bool	getDataSections () const
	Return true if data objects should be emitted into their own section, corresponds to -fdata-sections.
bool	getFunctionSections () const
	Return true if functions should be emitted into their own section, corresponding to -ffunction-sections.
bool	getEnableStaticDataPartitioning () const
bool	getIgnoreXCOFFVisibility () const
	Return true if visibility attribute should not be emitted in XCOFF, corresponding to -mignore-xcoff-visibility.
bool	getXCOFFTracebackTable () const
	Return true if XCOFF traceback table should be emitted, corresponding to -xcoff-traceback-table.
llvm::BasicBlockSection	getBBSectionsType () const
	If basic blocks should be emitted into their own section, corresponding to -fbasic-block-sections.
const MemoryBuffer *	getBBSectionsFuncListBuf () const
	Get the list of functions and basic block ids that need unique sections.
virtual bool	isNoopAddrSpaceCast (unsigned SrcAS, unsigned DestAS) const
	Returns true if a cast between SrcAS and DestAS is a noop.
void	setPGOOption (std::optional< PGOOptions > PGOOpt)
const std::optional< PGOOptions > &	getPGOOption () const
virtual unsigned	getAssumedAddrSpace (const Value *V) const
	If the specified generic pointer could be assumed as a pointer to a specific address space, return that address space.
virtual std::pair< const Value *, unsigned >	getPredicatedAddrSpace (const Value *V) const
	If the specified predicate checks whether a generic pointer falls within a specified address space, return that generic pointer and the address space being queried.
TargetIRAnalysis	getTargetIRAnalysis () const
	Get a `TargetIRAnalysis` appropriate for the target.
virtual void	registerPassBuilderCallbacks (PassBuilder &)
	Allow the target to modify the pass pipeline.
virtual void	registerEarlyDefaultAliasAnalyses (AAManager &)
	Allow the target to register early alias analyses (AA before BasicAA) with the AAManager for use with the new pass manager.
virtual void	registerDefaultAliasAnalyses (AAManager &)
	Allow the target to register alias analyses with the AAManager for use with the new pass manager.
virtual bool	targetSchedulesPostRAScheduling () const
	True if subtarget inserts the final scheduling pass on its own.
void	getNameWithPrefix (SmallVectorImpl< char > &Name, const GlobalValue *GV, Mangler &Mang, bool MayAlwaysUsePrivate=false) const
MCSymbol *	getSymbol (const GlobalValue *GV) const
virtual unsigned	getSjLjDataSize () const
virtual unsigned	getAddressSpaceForPseudoSourceKind (unsigned Kind) const
	getAddressSpaceForPseudoSourceKind - Given the kind of memory (e.g.
virtual bool	splitModule (Module &M, unsigned NumParts, function_ref< void(std::unique_ptr< Module > MPart)> ModuleCallback)
	Entry point for module splitting.
virtual Error	buildCodeGenPipeline (ModulePassManager &, raw_pwrite_stream &, raw_pwrite_stream , CodeGenFileType, const CGPassBuilderOption &, PassInstrumentationCallbacks )
virtual bool	isMachineVerifierClean () const
	Returns true if the target is expected to pass all machine verifier checks.
virtual bool	usesPhysRegsForValues () const
	True if the target uses physical regs (as nearly all targets do).
virtual bool	useIPRA () const
	True if the target wants to use interprocedural register allocation by default.
virtual int	unqualifiedInlineAsmVariant () const
	The default variant to use in unqualified asm instructions.
virtual void	registerMachineRegisterInfoCallback (MachineFunction &MF) const
virtual size_t	clearLinkerOptimizationHints (const SmallPtrSetImpl< MachineInstr * > &MIs) const
	Remove all Linker Optimization Hints (LOH) associated with instructions in `MIs` and.

Protected Member Functions
	CodeGenTargetMachineImpl (const Target &T, StringRef DataLayoutString, const Triple &TT, StringRef CPU, StringRef FS, const TargetOptions &Options, Reloc::Model RM, CodeModel::Model CM, CodeGenOptLevel OL)
void	initAsmInfo ()
virtual void	reset ()
	Reset internal state.
Protected Member Functions inherited from llvm::TargetMachine
	TargetMachine (const Target &T, StringRef DataLayoutString, const Triple &TargetTriple, StringRef CPU, StringRef FS, const TargetOptions &Options)

Additional Inherited Members
Static Public Member Functions inherited from llvm::TargetMachine
static std::pair< int, int >	parseBinutilsVersion (StringRef Version)
Public Attributes inherited from llvm::TargetMachine
TargetOptions	Options
Static Public Attributes inherited from llvm::TargetMachine
static constexpr unsigned	DefaultSjLjDataSize = 32
	The integer bit size to use for SjLj based exception handling.
Protected Attributes inherited from llvm::TargetMachine
const Target &	TheTarget
	The Target that this machine was created for.
const DataLayout	DL
	DataLayout for the target: keep ABI type size and alignment.
Triple	TargetTriple
	Triple string, CPU name, and target feature strings the TargetMachine instance is created with.
std::string	TargetCPU
std::string	TargetFS
Reloc::Model	RM = Reloc::Static
CodeModel::Model	CMModel = CodeModel::Small
uint64_t	LargeDataThreshold = 0
CodeGenOptLevel	OptLevel = CodeGenOptLevel::Default
std::unique_ptr< const MCAsmInfo >	AsmInfo
	Contains target specific asm information.
std::unique_ptr< const MCRegisterInfo >	MRI
std::unique_ptr< const MCInstrInfo >	MII
std::unique_ptr< const MCSubtargetInfo >	STI
unsigned	RequireStructuredCFG: 1
unsigned	O0WantsFastISel: 1
std::optional< PGOOptions >	PGOOption

Detailed Description

implements a set of functionality in the TargetMachine class for targets that make use of the independent code generator (CodeGen) library.

Must not be used directly in code unless to inherit its implementation.

Definition at line 24 of file CodeGenTargetMachineImpl.h.

Constructor & Destructor Documentation

◆ CodeGenTargetMachineImpl()

CodeGenTargetMachineImpl::CodeGenTargetMachineImpl	(	const Target &	T,
		StringRef	DataLayoutString,
		const Triple &	TT,
		StringRef	CPU,
		StringRef	FS,
		const TargetOptions &	Options,
		Reloc::Model	RM,
		CodeModel::Model	CM,
		CodeGenOptLevel	OL )

protected

Definition at line 94 of file CodeGenTargetMachineImpl.cpp.

References llvm::TargetMachine::CMModel, EnableNoTrapAfterNoreturn, EnableTrapUnreachable, if(), llvm::TargetOptions::NoTrapAfterNoreturn, llvm::TargetMachine::Options, llvm::TargetMachine::OptLevel, llvm::TargetMachine::RM, T, llvm::TargetMachine::TargetMachine(), and llvm::TargetOptions::TrapUnreachable.

Member Function Documentation

◆ addAsmPrinter()

bool CodeGenTargetMachineImpl::addAsmPrinter	(	PassManagerBase &	PM,
		raw_pwrite_stream &	Out,
		raw_pwrite_stream *	DwoOut,
		CodeGenFileType	FileType,
		MCContext &	Context )

overridevirtual

Adds an AsmPrinter pass to the pipeline that prints assembly or machine code from the MI representation.

Reimplemented from llvm::TargetMachine.

Definition at line 135 of file CodeGenTargetMachineImpl.cpp.

References llvm::legacy::PassManagerBase::add(), llvm::Target::createAsmPrinter(), createMCStreamer(), llvm::TargetMachine::getTarget(), Printer, llvm::Expected< T >::takeError(), and llvm::toString().

Referenced by addPassesToEmitFile(), and llvm::DirectXTargetMachine::addPassesToEmitFile().

◆ addPassesToEmitFile()

bool CodeGenTargetMachineImpl::addPassesToEmitFile	(	PassManagerBase &	PM,
		raw_pwrite_stream &	Out,
		raw_pwrite_stream *	DwoOut,
		CodeGenFileType	FileType,
		bool	DisableVerify = true,
		MachineModuleInfoWrapperPass *	MMIWP = nullptr )

overridevirtual

Add passes to the specified pass manager to get the specified file emitted.

Typically this will involve several steps of code generation. MMIWP is an optional parameter that, if set to non-nullptr, will be used to set the MachineModuloInfo for this PM.

Reimplemented from llvm::TargetMachine.

Reimplemented in llvm::DirectXTargetMachine.

Definition at line 224 of file CodeGenTargetMachineImpl.cpp.

References llvm::legacy::PassManagerBase::add(), addAsmPrinter(), addPassesToGenerateCode(), llvm::createFreeMachineFunctionPass(), llvm::createPrintMIRPass(), llvm::MachineModuleInfo::getContext(), llvm::MachineModuleInfoWrapperPass::getMMI(), llvm::Null, and llvm::TargetPassConfig::willCompleteCodeGenPipeline().

◆ addPassesToEmitMC()

bool CodeGenTargetMachineImpl::addPassesToEmitMC	(	PassManagerBase &	PM,
		MCContext *&	Ctx,
		raw_pwrite_stream &	Out,
		bool	DisableVerify = true )

overridevirtual

Add passes to the specified pass manager to get machine code emitted with the MCJIT.

addPassesToEmitMC - Add passes to the specified pass manager to get machine code emitted with the MCJIT.

This method returns true if machine code is not supported. It fills the MCContext Ctx pointer which can be used to build custom MCStreamer.

Reimplemented from llvm::TargetMachine.

Reimplemented in llvm::DirectXTargetMachine, and llvm::NVPTXTargetMachine.

Definition at line 254 of file CodeGenTargetMachineImpl.cpp.

◆ createMCStreamer()

Expected< std::unique_ptr< MCStreamer > > CodeGenTargetMachineImpl::createMCStreamer	(	raw_pwrite_stream &	Out,
		raw_pwrite_stream *	DwoOut,
		CodeGenFileType	FileType,
		MCContext &	Ctx )

overridevirtual

Reimplemented from llvm::TargetMachine.

Definition at line 158 of file CodeGenTargetMachineImpl.cpp.

Referenced by addAsmPrinter().

◆ createPassConfig()

TargetPassConfig * CodeGenTargetMachineImpl::createPassConfig ( PassManagerBase & PM )

overridevirtual

Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of CodeGen passes.

createPassConfig - Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of CodeGen passes.

Targets may override this to extend TargetPassConfig.

Reimplemented from llvm::TargetMachine.

Definition at line 638 of file TargetPassConfig.cpp.

◆ getTargetTransformInfo()

TargetTransformInfo CodeGenTargetMachineImpl::getTargetTransformInfo ( const Function & F ) const

overridevirtual

Get a TargetTransformInfo implementation for the target.

The TTI returned uses the common code generator to answer queries about the IR.

Reimplemented from llvm::TargetMachine.

Reimplemented in llvm::DirectXTargetMachine, llvm::GCNTargetMachine, llvm::HexagonTargetMachine, llvm::LanaiTargetMachine, llvm::LoongArchTargetMachine, llvm::MipsTargetMachine, llvm::NVPTXTargetMachine, llvm::PPCTargetMachine, llvm::R600TargetMachine, llvm::RISCVTargetMachine, llvm::SPIRVTargetMachine, llvm::SystemZTargetMachine, llvm::VETargetMachine, llvm::WebAssemblyTargetMachine, llvm::X86TargetMachine, and llvm::XCoreTargetMachine.

Definition at line 110 of file CodeGenTargetMachineImpl.cpp.

References F.

◆ initAsmInfo()

void CodeGenTargetMachineImpl::initAsmInfo ( )

protected

Definition at line 47 of file CodeGenTargetMachineImpl.cpp.

◆ reset()

virtual void llvm::CodeGenTargetMachineImpl::reset ( )

inlineprotectedvirtual

Reset internal state.

Reimplemented in llvm::AArch64TargetMachine, and llvm::ARMBaseTargetMachine.

Definition at line 34 of file CodeGenTargetMachineImpl.h.

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

include/llvm/CodeGen/CodeGenTargetMachineImpl.h
lib/CodeGen/CodeGenTargetMachineImpl.cpp
lib/CodeGen/TargetPassConfig.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ CodeGenTargetMachineImpl()

Member Function Documentation

◆ addAsmPrinter()

◆ addPassesToEmitFile()

◆ addPassesToEmitMC()

◆ createMCStreamer()

◆ createPassConfig()

◆ getTargetTransformInfo()

◆ initAsmInfo()

◆ reset()