#include <DataLayout.h>

Inheritance diagram for llvm::DataLayout:

Collaboration diagram for llvm::DataLayout:

Public Member Functions
	DataLayout ()

	DataLayout (StringRef LayoutDescription)
	Constructs a DataLayout from a specification string. See init(). More...

	DataLayout (const Module *M)
	Initialize target data from properties stored in the module. More...

	DataLayout (const DataLayout &DL)

	~DataLayout ()

bool	doFinalization (Module &M)

void	init (StringRef LayoutDescription)

bool	isLittleEndian () const
	Layout endianness... More...

bool	isBigEndian () const

std::string	getStringRepresentation () const

bool	isLegalInteger (unsigned Width) const

bool	isIllegalInteger (unsigned Width) const

bool	exceedsNaturalStackAlignment (unsigned Align) const
	Returns true if the given alignment exceeds the natural stack alignment. More...

bool	fitsInLegalInteger (unsigned Width) const

unsigned	getPointerABIAlignment (unsigned AS=0) const

unsigned	getPointerPrefAlignment (unsigned AS=0) const

unsigned	getPointerSize (unsigned AS=0) const

unsigned	getPointerSizeInBits (unsigned AS=0) const

unsigned	getPointerTypeSizeInBits (Type *) const

unsigned	getPointerTypeSize (Type *Ty) const

uint64_t	getTypeSizeInBits (Type *Ty) const

uint64_t	getTypeStoreSize (Type *Ty) const

uint64_t	getTypeStoreSizeInBits (Type *Ty) const

uint64_t	getTypeAllocSize (Type *Ty) const

uint64_t	getTypeAllocSizeInBits (Type *Ty) const

unsigned	getABITypeAlignment (Type *Ty) const

unsigned	getABIIntegerTypeAlignment (unsigned BitWidth) const

unsigned	getCallFrameTypeAlignment (Type *Ty) const

unsigned	getPrefTypeAlignment (Type *Ty) const

unsigned	getPreferredTypeAlignmentShift (Type *Ty) const

IntegerType *	getIntPtrType (LLVMContext &C, unsigned AddressSpace=0) const

Type *	getIntPtrType (Type *) const

Type *	getSmallestLegalIntType (LLVMContext &C, unsigned Width=0) const

Type *	getLargestLegalIntType (LLVMContext &C) const

unsigned	getLargestLegalIntTypeSize () const

uint64_t	getIndexedOffset (Type Ty, ArrayRef< Value > Indices) const

const StructLayout *	getStructLayout (StructType *Ty) const

unsigned	getPreferredAlignment (const GlobalVariable *GV) const

unsigned	getPreferredAlignmentLog (const GlobalVariable *GV) const

Public Member Functions inherited from llvm::ImmutablePass
virtual void	initializePass ()

virtual ImmutablePass *	getAsImmutablePass ()

bool	runOnModule (Module &)

	ImmutablePass (char &pid)

virtual	~ImmutablePass ()

Public Member Functions inherited from llvm::ModulePass
Pass *	createPrinterPass (raw_ostream &O, const std::string &Banner) const
	createPrinterPass - Get a module printer pass. More...

virtual void	assignPassManager (PMStack &PMS, PassManagerType T)

virtual PassManagerType	getPotentialPassManagerType () const
	Return what kind of Pass Manager can manage this pass. More...

	ModulePass (char &pid)

virtual	~ModulePass ()

Public Member Functions inherited from llvm::Pass
	Pass (PassKind K, char &pid)

virtual	~Pass ()

PassKind	getPassKind () const

virtual const char *	getPassName () const

AnalysisID	getPassID () const
	getPassID - Return the PassID number that corresponds to this pass. More...

virtual bool	doInitialization (Module &)

virtual void	print (raw_ostream &O, const Module *M) const

void	dump () const

virtual void	preparePassManager (PMStack &)
	Check if available pass managers are suitable for this pass or not. More...

void	setResolver (AnalysisResolver *AR)

AnalysisResolver *	getResolver () const

virtual void	getAnalysisUsage (AnalysisUsage &) const

virtual void	releaseMemory ()

virtual void *	getAdjustedAnalysisPointer (AnalysisID ID)

virtual PMDataManager *	getAsPMDataManager ()

virtual void	verifyAnalysis () const

virtual void	dumpPassStructure (unsigned Offset=0)

template<typename AnalysisType >
AnalysisType *	getAnalysisIfAvailable () const

bool	mustPreserveAnalysisID (char &AID) const

template<typename AnalysisType >
AnalysisType &	getAnalysis () const

template<typename AnalysisType >
AnalysisType &	getAnalysis (Function &F)

template<typename AnalysisType >
AnalysisType &	getAnalysisID (AnalysisID PI) const

template<typename AnalysisType >
AnalysisType &	getAnalysisID (AnalysisID PI, Function &F)

Static Public Member Functions
template<typename UIntTy >
static UIntTy	RoundUpAlignment (UIntTy Val, unsigned Alignment)

Static Public Member Functions inherited from llvm::Pass
static const PassInfo *	lookupPassInfo (const void *TI)

static const PassInfo *	lookupPassInfo (StringRef Arg)

static Pass *	createPass (AnalysisID ID)

Static Public Attributes
static char	ID = 0

Detailed Description

DataLayout - This class holds a parsed version of the target data layout string in a module and provides methods for querying it. The target data layout string is specified by the target - a frontend generating LLVM IR is required to generate the right target data for the target being codegen'd to. If some measure of portability is desired, an empty string may be specified in the module.

Definition at line 98 of file DataLayout.h.

Constructor & Destructor Documentation

DataLayout::DataLayout ( )

Default ctor.

Note: This has to exist, because this is a pass, but it should never be used.

Definition at line 308 of file DataLayout.cpp.

References llvm::report_fatal_error().

llvm::DataLayout::DataLayout ( StringRef LayoutDescription )

inlineexplicit

Constructs a DataLayout from a specification string. See init().

Definition at line 166 of file DataLayout.h.

References init().

DataLayout::DataLayout ( const Module * M )

explicit

Initialize target data from properties stored in the module.

Definition at line 313 of file DataLayout.cpp.

References llvm::Module::getDataLayout(), and init().

llvm::DataLayout::DataLayout ( const DataLayout & DL )

inline

Definition at line 174 of file DataLayout.h.

DataLayout::~DataLayout ( )

Definition at line 435 of file DataLayout.cpp.

Member Function Documentation

bool DataLayout::doFinalization ( Module & M )

virtual

DataLayout is an immutable pass, but holds state. This allows the pass manager to clear its mutable state.

Reimplemented from llvm::Pass.

Definition at line 439 of file DataLayout.cpp.

bool llvm::DataLayout::exceedsNaturalStackAlignment ( unsigned Align ) const

inline

Returns true if the given alignment exceeds the natural stack alignment.

Definition at line 222 of file DataLayout.h.

Referenced by enforceKnownAlignment(), and getMemcpyLoadsAndStores().

bool llvm::DataLayout::fitsInLegalInteger ( unsigned Width ) const

inline

fitsInLegalInteger - This function returns true if the specified type fits in a native integer type supported by the CPU. For example, if the CPU only supports i32 as a native integer type, then i27 fits in a legal

Definition at line 230 of file DataLayout.h.

References llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by llvm::MemoryDependenceAnalysis::getLoadLoadClobberFullWidthSize().

unsigned DataLayout::getABIIntegerTypeAlignment ( unsigned BitWidth ) const

getABIIntegerTypeAlignment - Return the minimum ABI-required alignment for an integer type of the specified bitwidth.

Definition at line 588 of file DataLayout.cpp.

References llvm::INTEGER_ALIGN.

Referenced by llvm::MachineJumpTableInfo::getEntryAlignment().

unsigned DataLayout::getABITypeAlignment ( Type * Ty ) const

getABITypeAlignment - Return the minimum ABI-required alignment for the specified type.

Definition at line 582 of file DataLayout.cpp.

Referenced by llvm::ComputeMaskedBits(), llvm::X86TargetLowering::getByValTypeAlignment(), getCallFrameTypeAlignment(), getMemcpyLoadsAndStores(), getMemmoveLoadsAndStores(), getMemsetStores(), getPreferredAlignment(), llvm::ARMTargetLowering::getTgtMemIntrinsic(), getTypeAllocSize(), InlineCallIfPossible(), llvm::TargetLowering::LowerCallTo(), llvm::NVPTXTargetLowering::LowerFormalArguments(), llvm::AArch64TargetLowering::LowerGlobalAddressELFSmall(), llvm::PPCTargetLowering::PerformDAGCombine(), SRAGlobal(), llvm::InstCombiner::visitLoadInst(), and llvm::InstCombiner::visitStoreInst().

unsigned DataLayout::getCallFrameTypeAlignment ( Type * Ty ) const

getCallFrameTypeAlignment - Return the minimum ABI-required alignment for the specified type when it is part of a call frame.

Definition at line 592 of file DataLayout.cpp.

References getABITypeAlignment(), and llvm::STACK_ALIGN.

Referenced by llvm::TargetLoweringBase::getByValTypeAlignment().

uint64_t DataLayout::getIndexedOffset	(	Type *	Ty,
		ArrayRef< Value * >	Indices
	)		const

getIndexedOffset - return the offset from the beginning of the type for the specified indices. This is used to implement getelementptr.

Definition at line 639 of file DataLayout.cpp.

References llvm::gep_type_begin(), llvm::Type::getContext(), llvm::StructLayout::getElementOffset(), llvm::Type::getInt32Ty(), getStructLayout(), llvm::Intrinsic::getType(), getTypeAllocSize(), llvm::Type::isPointerTy(), and llvm::ArrayRef< T >::size().

Referenced by llvm::CompileUnit::createGlobalVariableDIE(), and SymbolicallyEvaluateGEP().

IntegerType * DataLayout::getIntPtrType	(	LLVMContext &	C,
		unsigned	AddressSpace = `0`
	)		const

getIntPtrType - Return an integer type with size at least as big as that of a pointer in the given address space.

Definition at line 610 of file DataLayout.cpp.

References llvm::IntegerType::get(), and getPointerSizeInBits().

Referenced by llvm::IntrinsicLowering::AddPrototypes(), CastGEPIndices(), CoerceAvailableValueToLoadType(), llvm::ConstantFoldCompareInstOperands(), convertPointerToIntegerType(), convertValue(), llvm::EmitFWrite(), llvm::EmitGEPOffset(), llvm::EmitMemChr(), llvm::EmitMemCmp(), llvm::EmitMemCpyChk(), llvm::EmitStrLen(), llvm::EmitStrNCmp(), llvm::EmitStrNLen(), llvm::X86SelectionDAGInfo::EmitTargetCodeForMemset(), llvm::ARMSelectionDAGInfo::EmitTargetCodeForMemset(), EvaluateGEPOffsetExpression(), llvm::SimplifyFortifiedLibCalls::fold(), GetConstantInt(), llvm::ScalarEvolution::getEffectiveSCEVType(), llvm::IRBuilderBase::getIntPtrTy(), llvm::SelectionDAG::getMemcpy(), llvm::SelectionDAG::getMemmove(), llvm::SelectionDAG::getMemset(), GetStoreValueForLoad(), InstCombineLoadCast(), isEliminableCastPair(), nvptx::LowerConstant(), lowerConstant(), llvm::IntrinsicLowering::LowerIntrinsicCall(), llvm::ObjectSizeOffsetEvaluator::ObjectSizeOffsetEvaluator(), llvm::ObjectSizeOffsetVisitor::ObjectSizeOffsetVisitor(), PerformHeapAllocSRoA(), ReadDataFromGlobal(), SimplifyBranchOnICmpChain(), stripAndComputeConstantOffsets(), SymbolicallyEvaluateGEP(), TryToOptimizeStoreOfMallocToGlobal(), llvm::InstCombiner::visitAllocaInst(), and llvm::PtrUseVisitor< SliceBuilder >::visitPtr().

Type * DataLayout::getIntPtrType ( Type * Ty ) const

getIntPtrType - Return an integer (vector of integer) type with size at least as big as that of a pointer of the given pointer (vector of pointer) type.

Definition at line 615 of file DataLayout.cpp.

References llvm::IntegerType::get(), llvm::VectorType::get(), llvm::Type::getContext(), llvm::Type::getScalarType(), getTypeSizeInBits(), and llvm::Type::isPtrOrPtrVectorTy().

Type* llvm::DataLayout::getLargestLegalIntType ( LLVMContext & C ) const

inline

getLargestLegalIntType - Return the largest legal integer type, or null if none are set.

Definition at line 374 of file DataLayout.h.

References llvm::Type::getIntNTy(), and getLargestLegalIntTypeSize().

unsigned DataLayout::getLargestLegalIntTypeSize ( ) const

getLargestLegalIntType - Return the size of largest legal integer type size, or 0 if none are set.

Definition at line 632 of file DataLayout.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by getLargestLegalIntType().

unsigned llvm::DataLayout::getPointerABIAlignment ( unsigned AS = 0 ) const

inline

Layout pointer alignment FIXME: The defaults need to be removed once all of the backends/clients are updated.

Definition at line 240 of file DataLayout.h.

Referenced by llvm::TargetLoweringObjectFileELF::emitPersonalityValue(), and llvm::MachineJumpTableInfo::getEntryAlignment().

unsigned llvm::DataLayout::getPointerPrefAlignment ( unsigned AS = 0 ) const

inline

Return target's alignment for stack-based pointers FIXME: The defaults need to be removed once all of the backends/clients are updated.

Definition at line 251 of file DataLayout.h.

Referenced by FindOptimalMemOpLowering(), and getOpenCLAlignment().

unsigned llvm::DataLayout::getPointerSize ( unsigned AS = 0 ) const

inline

Layout pointer size FIXME: The defaults need to be removed once all of the backends/clients are updated.

Definition at line 261 of file DataLayout.h.

Referenced by llvm::CompileUnit::createGlobalVariableDIE(), llvm::DwarfUnits::emitAddresses(), llvm::SystemZAsmPrinter::EmitEndOfAsmFile(), llvm::AArch64AsmPrinter::EmitEndOfAsmFile(), llvm::X86AsmPrinter::EmitEndOfAsmFile(), llvm::DwarfException::EmitExceptionTable(), llvm::CompileUnit::emitHeader(), llvm::TargetLoweringObjectFileELF::emitPersonalityValue(), llvm::DIEInteger::EmitValue(), llvm::MachineJumpTableInfo::getEntrySize(), getPointerSizeInBits(), llvm::DIEEntry::getRefAddrSize(), llvm::MSP430TargetLowering::getReturnAddressFrameIndex(), llvm::TargetLoweringBase::getScalarShiftAmountTy(), llvm::AsmPrinter::GetSizeOfEncodedValue(), isTargetNullPtr(), llvm::MSP430TargetLowering::LowerRETURNADDR(), llvm::DIEInteger::SizeOf(), llvm::DIEExpr::SizeOf(), llvm::DIELabel::SizeOf(), and llvm::DIEDelta::SizeOf().

unsigned llvm::DataLayout::getPointerSizeInBits ( unsigned AS = 0 ) const

inline

Layout pointer size, in bits FIXME: The defaults need to be removed once all of the backends/clients are updated.

Definition at line 271 of file DataLayout.h.

References getPointerSize().

Referenced by llvm::GEPOperator::accumulateConstantOffset(), DecomposeGEPExpression(), llvm::ExecutionEngine::getConstantValue(), getIntPtrType(), getNaturalGEPWithType(), llvm::TargetLoweringBase::getPointerSizeInBits(), getTypeSizeInBits(), lle_X_sprintf(), nvptx::LowerConstant(), llvm::TargetLowering::ParseConstraints(), and llvm::Value::stripAndAccumulateInBoundsConstantOffsets().

unsigned llvm::DataLayout::getPointerTypeSize ( Type * Ty ) const

inline

Definition at line 282 of file DataLayout.h.

References getPointerTypeSizeInBits().

Referenced by llvm::AsmPrinter::EmitGlobalVariable().

unsigned DataLayout::getPointerTypeSizeInBits ( Type * Ty ) const

Layout pointer size, in bits, based on the type. If this function is called with a pointer type, then the type size of the pointer is returned. If this function is called with a vector of pointers, then the type size of the pointer is returned. This should only be called with a pointer or vector of pointers.

Definition at line 510 of file DataLayout.cpp.

References llvm::Type::getScalarType(), getTypeSizeInBits(), llvm::Type::isPointerTy(), and llvm::Type::isPtrOrPtrVectorTy().

Referenced by llvm::ConstantFoldInstOperands(), getBitWidth(), llvm::getOrEnforceKnownAlignment(), llvm::GetPointerBaseWithConstantOffset(), getPointerTypeSize(), IsConstantOffsetFromGlobal(), and lowerConstant().

unsigned DataLayout::getPreferredAlignment ( const GlobalVariable * GV ) const

getPreferredAlignment - Return the preferred alignment of the specified global. This includes an explicitly requested alignment (if the global has one).

Definition at line 679 of file DataLayout.cpp.

References getABITypeAlignment(), llvm::GlobalValue::getAlignment(), llvm::SequentialType::getElementType(), getPrefTypeAlignment(), llvm::GlobalValue::getType(), getTypeSizeInBits(), and llvm::GlobalVariable::hasInitializer().

Referenced by llvm::ComputeMaskedBits(), llvm::JIT::getMemoryForGV(), getPreferredAlignmentLog(), llvm::TargetLoweringObjectFileELF::SelectSectionForGlobal(), and llvm::TargetLoweringObjectFileMachO::SelectSectionForGlobal().

unsigned DataLayout::getPreferredAlignmentLog ( const GlobalVariable * GV ) const

getPreferredAlignmentLog - Return the preferred alignment of the specified global, returned in log form. This includes an explicitly requested alignment (if the global has one).

Definition at line 703 of file DataLayout.cpp.

References getPreferredAlignment(), and llvm::Log2_32().

Referenced by getGVAlignmentLog2().

unsigned DataLayout::getPreferredTypeAlignmentShift ( Type * Ty ) const

getPreferredTypeAlignmentShift - Return the preferred alignment for the specified type, returned as log2 of the value (a shift amount).

Definition at line 604 of file DataLayout.cpp.

References getPrefTypeAlignment(), and llvm::Log2_32().

unsigned DataLayout::getPrefTypeAlignment ( Type * Ty ) const

getPrefTypeAlignment - Return the preferred stack/global alignment for the specified type. This is always at least as good as the ABI alignment.

Definition at line 600 of file DataLayout.cpp.

Referenced by llvm::SelectionDAG::CreateStackTemporary(), llvm::SelectionDAG::getConstantPool(), getOpenCLAlignment(), getPreferredAlignment(), getPreferredTypeAlignmentShift(), HandleByValArgument(), llvm::isSafeToLoadUnconditionally(), llvm::SelectionDAGBuilder::LowerCallTo(), llvm::FunctionLoweringInfo::set(), llvm::InstCombiner::visitAllocaInst(), llvm::InstCombiner::visitLoadInst(), llvm::SelectionDAGBuilder::visitSPDescriptorParent(), and llvm::InstCombiner::visitStoreInst().

Type * DataLayout::getSmallestLegalIntType	(	LLVMContext &	C,
		unsigned	Width = `0`
	)		const

getSmallestLegalIntType - Return the smallest integer type with size at least as big as Width bits.

Definition at line 625 of file DataLayout.cpp.

References llvm::Type::getIntNTy(), and llvm::SmallVectorTemplateCommon< T, typename >::size().

std::string DataLayout::getStringRepresentation ( ) const

getStringRepresentation - Return the string representation of the DataLayout. This representation is in the same format accepted by the string constructor above.

Definition at line 468 of file DataLayout.cpp.

References llvm::LayoutAlignElem::ABIAlign, llvm::PointerAlignElem::ABIAlign, llvm::PointerAlignElem::AddressSpace, llvm::LayoutAlignElem::AlignType, llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorBase::empty(), if(), llvm::LayoutAlignElem::PrefAlign, llvm::PointerAlignElem::PrefAlign, llvm::SmallVectorTemplateBase< T, isPodLike >::push_back(), llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::raw_string_ostream::str(), llvm::LayoutAlignElem::TypeBitWidth, and llvm::PointerAlignElem::TypeBitWidth.

const StructLayout * DataLayout::getStructLayout ( StructType * Ty ) const

getStructLayout - Return a StructLayout object, indicating the alignment of the struct, its size, and the offsets of its fields. Note that this information is lazily cached.

Definition at line 445 of file DataLayout.cpp.

References llvm::StructType::getNumElements(), and llvm::LibFunc::malloc.

Referenced by llvm::GEPOperator::accumulateConstantOffset(), computeArraySize(), llvm::ComputeValueVTs(), DecomposeGEPExpression(), llvm::EmitGEPOffset(), emitGlobalConstantStruct(), EvaluateGEPOffsetExpression(), getIndexedOffset(), getNaturalGEPRecursively(), GetOffsetFromIndex(), llvm::ScalarEvolution::getOffsetOfExpr(), getTypePartition(), getTypeSizeInBits(), HasPadding(), llvm::ExecutionEngine::InitializeMemory(), isGEPKnownNonNull(), PerformHeapAllocSRoA(), ReadDataFromGlobal(), SRAGlobal(), stripAggregateTypeWrapping(), SymbolicallyEvaluateGEP(), and TryToOptimizeStoreOfMallocToGlobal().

uint64_t llvm::DataLayout::getTypeAllocSize ( Type * Ty ) const

inline

getTypeAllocSize - Return the offset in bytes between successive objects of the specified type, including alignment padding. This is the amount that alloca reserves for this type. For example, returns 12 or 16 for x86_fp80, depending on alignment.

Definition at line 326 of file DataLayout.h.

References getABITypeAlignment(), getTypeStoreSize(), and RoundUpAlignment().

Referenced by llvm::GEPOperator::accumulateConstantOffset(), AddFastCallStdCallSuffix(), computeArraySize(), llvm::ComputeValueVTs(), DecomposeGEPExpression(), llvm::AsmPrinter::EmitConstantPool(), llvm::EmitGEPOffset(), llvm::AsmPrinter::EmitGlobalConstant(), emitGlobalConstantArray(), emitGlobalConstantDataSequential(), emitGlobalConstantFP(), emitGlobalConstantImpl(), emitGlobalConstantLargeInt(), emitGlobalConstantStruct(), emitGlobalConstantVector(), llvm::AsmPrinter::EmitGlobalVariable(), llvm::ExecutionEngine::EmitGlobalVariable(), llvm::SystemZAsmPrinter::EmitMachineConstantPoolValue(), llvm::ARMAsmPrinter::EmitMachineConstantPoolValue(), llvm::ARMAsmPrinter::EmitXXStructor(), EvaluateGEPOffsetExpression(), FoldReinterpretLoadFromConstPtr(), for(), GetConstantPoolSizeInBytes(), getGEPInductionOperand(), getIndexedOffset(), llvm::TargetLoweringObjectFile::getKindForGlobal(), llvm::JIT::getMemoryForGV(), getNaturalGEPRecursively(), getNaturalGEPWithOffset(), GetOffsetFromIndex(), llvm::NVPTXTargetLowering::getPrototype(), llvm::ScalarEvolution::getSizeOfExpr(), llvm::SparcTargetLowering::getSRetArgSize(), llvm::AArch64TargetLowering::getTgtMemIntrinsic(), llvm::ARMTargetLowering::getTgtMemIntrinsic(), getTypeAllocSizeInBits(), getTypePartition(), llvm::ExecutionEngine::InitializeMemory(), llvm::InlineFunction(), isGEPKnownNonNull(), llvm::HexagonTargetObjectFile::IsGlobalInSmallSection(), llvm::MipsTargetObjectFile::IsGlobalInSmallSection(), llvm::XCoreTargetLowering::isLegalAddressingMode(), isRepeatedByteSequence(), isSafeToEliminateVarargsCast(), isStridedPtr(), llvm::NVPTXTargetLowering::LowerCall(), llvm::SelectionDAGBuilder::LowerCallTo(), nvptx::LowerConstant(), lowerConstant(), llvm::NVPTXTargetLowering::LowerFormalArguments(), llvm::AMDGPUTargetLowering::LowerGlobalAddress(), llvm::NVPTXTargetLowering::LowerReturn(), PerformHeapAllocSRoA(), ReadDataFromGlobal(), llvm::FunctionLoweringInfo::set(), SimplifyGEPInst(), SRAGlobal(), stripAggregateTypeWrapping(), SymbolicallyEvaluateGEP(), TryToOptimizeStoreOfMallocToGlobal(), llvm::Interpreter::visitAllocaInst(), llvm::ObjectSizeOffsetVisitor::visitAllocaInst(), llvm::InstCombiner::visitAllocaInst(), llvm::ObjectSizeOffsetEvaluator::visitAllocaInst(), llvm::ObjectSizeOffsetVisitor::visitArgument(), and llvm::ObjectSizeOffsetVisitor::visitGlobalVariable().

uint64_t llvm::DataLayout::getTypeAllocSizeInBits ( Type * Ty ) const

inline

getTypeAllocSizeInBits - Return the offset in bits between successive objects of the specified type, including alignment padding; always a multiple of 8. This is the amount that alloca reserves for this type. For example, returns 96 or 128 for x86_fp80, depending on alignment.

Definition at line 335 of file DataLayout.h.

References getTypeAllocSize().

Referenced by FoldBitCast(), FoldReinterpretLoadFromConstPtr(), getTypeSizeInBits(), HasPadding(), llvm::NVPTXTargetLowering::LowerCall(), nvptx::LowerConstant(), lowerConstant(), and llvm::NVPTXTargetLowering::LowerReturn().

uint64_t llvm::DataLayout::getTypeSizeInBits ( Type * Ty ) const

inline

Size examples:

Type SizeInBits StoreSizeInBits AllocSizeInBits[*]

i1 1 8 8 i8 8 8 8 i19 19 24 32 i32 32 32 32 i100 100 104 128 i128 128 128 128 Float 32 32 32 Double 64 64 64 X86_FP80 80 80 96

[*] The alloc size depends on the alignment, and thus on the target. These values are for x86-32 linux. getTypeSizeInBits - Return the number of bits necessary to hold the specified type. For example, returns 36 for i36 and 80 for x86_fp80. The type passed must have a size (Type::isSized() must return true).

Definition at line 459 of file DataLayout.h.

References llvm::Type::ArrayTyID, llvm::Type::DoubleTyID, llvm::Type::FloatTyID, llvm::Type::FP128TyID, llvm::SequentialType::getElementType(), llvm::Type::getIntegerBitWidth(), llvm::ArrayType::getNumElements(), llvm::VectorType::getNumElements(), llvm::Type::getPointerAddressSpace(), getPointerSizeInBits(), llvm::StructLayout::getSizeInBits(), getStructLayout(), getTypeAllocSizeInBits(), llvm::Type::getTypeID(), llvm::Type::HalfTyID, llvm::Type::IntegerTyID, llvm::Type::isSized(), llvm::Type::LabelTyID, llvm_unreachable, llvm::Type::PointerTyID, llvm::Type::PPC_FP128TyID, llvm::Type::StructTyID, llvm::Type::VectorTyID, llvm::Type::X86_FP80TyID, and llvm::Type::X86_MMXTyID.

Referenced by AnalyzeLoadFromClobberingLoad(), AnalyzeLoadFromClobberingStore(), AnalyzeLoadFromClobberingWrite(), CanCoerceMustAliasedValueToLoad(), canConvertValue(), llvm::FastISel::canFoldAddIntoGEP(), CoerceAvailableValueToLoadType(), llvm::ComputeMaskedBits(), llvm::ComputeNumSignBits(), llvm::ExecutionEngine::getConstantValue(), getIntPtrType(), GetMemInstValueForLoad(), getMemSetPatternValue(), getNaturalGEPRecursively(), getPointerTypeSizeInBits(), getPreferredAlignment(), GetStoreValueForLoad(), llvm::ScalarEvolution::getTypeSizeInBits(), getTypeStoreSize(), HasPadding(), InstCombineLoadCast(), InstCombineStoreToCast(), isIntegerWideningViable(), isSimpleEnoughValueToCommitHelper(), isVectorPromotionViable(), llvm::TargetLowering::ParseConstraints(), SimplifyICmpInst(), stripAggregateTypeWrapping(), SymbolicallyEvaluateBinop(), and SymbolicallyEvaluateGEP().

uint64_t llvm::DataLayout::getTypeStoreSize ( Type * Ty ) const

inline

getTypeStoreSize - Return the maximum number of bytes that may be overwritten by storing the specified type. For example, returns 5 for i36 and 10 for x86_fp80.

Definition at line 311 of file DataLayout.h.

References getTypeSizeInBits().

Referenced by AnalyzeLoadFromClobberingLoad(), CanShareConstantPoolEntry(), emitGlobalConstantFP(), extractInteger(), GetLoadValueForLoad(), getTypeAllocSize(), llvm::AliasAnalysis::getTypeStoreSize(), getTypeStoreSizeInBits(), HandleByValArgument(), insertInteger(), isIntegerWideningViable(), llvm::isSafeToLoadUnconditionally(), llvm::ExecutionEngine::LoadValueFromMemory(), llvm::NVPTXLowerAggrCopies::runOnFunction(), and llvm::ExecutionEngine::StoreValueToMemory().

uint64_t llvm::DataLayout::getTypeStoreSizeInBits ( Type * Ty ) const

inline

getTypeStoreSizeInBits - Return the maximum number of bits that may be overwritten by storing the specified type; always a multiple of 8. For example, returns 40 for i36 and 80 for x86_fp80.

Definition at line 318 of file DataLayout.h.

References getTypeStoreSize().

Referenced by isIntegerWideningViable(), and isIntegerWideningViableForSlice().

void DataLayout::init ( StringRef LayoutDescription )

Parse a data layout string (with fallback to default values). Ensure that the data layout pass is registered.

Definition at line 154 of file DataLayout.cpp.

References llvm::AGGREGATE_ALIGN, llvm::FLOAT_ALIGN, llvm::PassRegistry::getPassRegistry(), llvm::initializeDataLayoutPass(), llvm::INTEGER_ALIGN, and llvm::VECTOR_ALIGN.

Referenced by DataLayout().

bool llvm::DataLayout::isBigEndian ( ) const

inline

Definition at line 196 of file DataLayout.h.

Referenced by CoerceAvailableValueToLoadType(), CollectInsertionElements(), emitGlobalConstantFP(), emitGlobalConstantLargeInt(), extractInteger(), GetLoadValueForLoad(), getMemSetPatternValue(), insertInteger(), and OptimizeIntToFloatBitCast().

bool llvm::DataLayout::isIllegalInteger ( unsigned Width ) const

inline

Definition at line 217 of file DataLayout.h.

References isLegalInteger().

bool llvm::DataLayout::isLegalInteger ( unsigned Width ) const

inline

isLegalInteger - This function returns true if the specified type is known to be a native integer type supported by the CPU. For example, i64 is not native on most 32-bit CPUs and i37 is not native on any known one. This returns false if the integer width is not legal.

The width is specified in bits.

Definition at line 210 of file DataLayout.h.

References llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by llvm::IVUsers::AddUsersImpl(), FindLoopCounter(), isIllegalInteger(), isIntegerWideningViable(), and llvm::InstCombiner::visitPHINode().

bool llvm::DataLayout::isLittleEndian ( ) const

inline

Layout endianness...

Definition at line 195 of file DataLayout.h.

Referenced by llvm::CompileUnit::addConstantFPValue(), llvm::CompileUnit::addConstantValue(), llvm::ConstantFoldLoadFromConstPtr(), FoldBitCast(), FoldReinterpretLoadFromConstPtr(), llvm::TargetInstrInfo::getStackSlotRange(), GetStoreValueForLoad(), ReadDataFromGlobal(), and llvm::TargetLoweringBase::TargetLoweringBase().

template<typename UIntTy >

static UIntTy llvm::DataLayout::RoundUpAlignment	(	UIntTy	Val,
		unsigned	Alignment
	)

inlinestatic

RoundUpAlignment - Round the specified value up to the next alignment boundary specified by Alignment. For example, 7 rounded up to an alignment boundary of 4 is 8. 8 rounded up to the alignment boundary of 4 is 8 because it is already aligned.

Definition at line 407 of file DataLayout.h.

Referenced by getTypeAllocSize().

Member Data Documentation

char DataLayout::ID = 0

static

Definition at line 412 of file DataLayout.h.

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

Public Member Functions

Static Public Member Functions

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation