#include "llvm/IR/Operator.h"

Inheritance diagram for llvm::GEPOperator:

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Collaboration diagram for llvm::GEPOperator:

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Public Member Functions
bool	isInBounds () const
	Test whether this is an inbounds GEP, as defined by LangRef.html. More...

Optional< unsigned >	getInRangeIndex () const
	Returns the offset of the index with an inrange attachment, or None if none. More...

op_iterator	idx_begin ()

const_op_iterator	idx_begin () const

op_iterator	idx_end ()

const_op_iterator	idx_end () const

Value *	getPointerOperand ()

const Value *	getPointerOperand () const

Type *	getPointerOperandType () const
	Method to return the pointer operand as a PointerType. More...

Type *	getSourceElementType () const

Type *	getResultElementType () const

unsigned	getPointerAddressSpace () const
	Method to return the address space of the pointer operand. More...

unsigned	getNumIndices () const

bool	hasIndices () const

bool	hasAllZeroIndices () const
	Return true if all of the indices of this GEP are zeros. More...

bool	hasAllConstantIndices () const
	Return true if all of the indices of this GEP are constant integers. More...

unsigned	countNonConstantIndices () const

bool	accumulateConstantOffset (const DataLayout &DL, APInt &Offset) const
	Accumulate the constant address offset of this GEP if possible. More...

Public Member Functions inherited from llvm::Operator
	Operator ()=delete

	~Operator ()=delete

void *	operator new (size_t s)=delete

unsigned	getOpcode () const
	Return the opcode for this Instruction or ConstantExpr. More...

Public Member Functions inherited from llvm::User
	User (const User &)=delete

void	operator delete (void *Usr)
	Free memory allocated for User and Use objects. More...

void	operator delete (void *Usr, unsigned)
	Placement delete - required by std, called if the ctor throws. More...

void	operator delete (void *Usr, unsigned, bool)
	Placement delete - required by std, called if the ctor throws. More...

const Use *	getOperandList () const

Use *	getOperandList ()

Value *	getOperand (unsigned i) const

void	setOperand (unsigned i, Value *Val)

const Use &	getOperandUse (unsigned i) const

Use &	getOperandUse (unsigned i)

unsigned	getNumOperands () const

ArrayRef< const uint8_t >	getDescriptor () const
	Returns the descriptor co-allocated with this User instance. More...

MutableArrayRef< uint8_t >	getDescriptor ()
	Returns the descriptor co-allocated with this User instance. More...

void	setGlobalVariableNumOperands (unsigned NumOps)
	Set the number of operands on a GlobalVariable. More...

void	setNumHungOffUseOperands (unsigned NumOps)
	Subclasses with hung off uses need to manage the operand count themselves. More...

op_iterator	op_begin ()

const_op_iterator	op_begin () const

op_iterator	op_end ()

const_op_iterator	op_end () const

op_range	operands ()

const_op_range	operands () const

value_op_iterator	value_op_begin ()

value_op_iterator	value_op_end ()

iterator_range< value_op_iterator >	operand_values ()

const_value_op_iterator	value_op_begin () const

const_value_op_iterator	value_op_end () const

iterator_range< const_value_op_iterator >	operand_values () const

void	dropAllReferences ()
	Drop all references to operands. More...

void	replaceUsesOfWith (Value From, Value To)
	Replace uses of one Value with another. More...

Public Member Functions inherited from llvm::Value
	Value (const Value &)=delete

Value &	operator= (const Value &)=delete

void	deleteValue ()
	Delete a pointer to a generic Value. More...

void	dump () const
	Support for debugging, callable in GDB: V->dump() More...

Type *	getType () const
	All values are typed, get the type of this value. More...

LLVMContext &	getContext () const
	All values hold a context through their type. More...

bool	hasName () const

ValueName *	getValueName () const

void	setValueName (ValueName *VN)

StringRef	getName () const
	Return a constant reference to the value's name. More...

void	setName (const Twine &Name)
	Change the name of the value. More...

void	takeName (Value *V)
	Transfer the name from V to this value. More...

void	replaceAllUsesWith (Value *V)
	Change all uses of this to point to a new Value. More...

void	replaceNonMetadataUsesWith (Value *V)
	Change non-metadata uses of this to point to a new Value. More...

void	replaceUsesOutsideBlock (Value V, BasicBlock BB)
	replaceUsesOutsideBlock - Go through the uses list for this definition and make each use point to "V" instead of "this" when the use is outside the block. More...

void	assertModuleIsMaterializedImpl () const

void	assertModuleIsMaterialized () const

bool	use_empty () const

bool	materialized_use_empty () const

use_iterator	materialized_use_begin ()

const_use_iterator	materialized_use_begin () const

use_iterator	use_begin ()

const_use_iterator	use_begin () const

use_iterator	use_end ()

const_use_iterator	use_end () const

iterator_range< use_iterator >	materialized_uses ()

iterator_range< const_use_iterator >	materialized_uses () const

iterator_range< use_iterator >	uses ()

iterator_range< const_use_iterator >	uses () const

bool	user_empty () const

user_iterator	materialized_user_begin ()

const_user_iterator	materialized_user_begin () const

user_iterator	user_begin ()

const_user_iterator	user_begin () const

user_iterator	user_end ()

const_user_iterator	user_end () const

User *	user_back ()

const User *	user_back () const

iterator_range< user_iterator >	materialized_users ()

iterator_range< const_user_iterator >	materialized_users () const

iterator_range< user_iterator >	users ()

iterator_range< const_user_iterator >	users () const

bool	hasOneUse () const
	Return true if there is exactly one user of this value. More...

bool	hasNUses (unsigned N) const
	Return true if this Value has exactly N users. More...

bool	hasNUsesOrMore (unsigned N) const
	Return true if this value has N users or more. More...

bool	isUsedInBasicBlock (const BasicBlock *BB) const
	Check if this value is used in the specified basic block. More...

unsigned	getNumUses () const
	This method computes the number of uses of this Value. More...

void	addUse (Use &U)
	This method should only be used by the Use class. More...

unsigned	getValueID () const
	Return an ID for the concrete type of this object. More...

unsigned	getRawSubclassOptionalData () const
	Return the raw optional flags value contained in this value. More...

void	clearSubclassOptionalData ()
	Clear the optional flags contained in this value. More...

bool	hasSameSubclassOptionalData (const Value *V) const
	Check the optional flags for equality. More...

bool	hasValueHandle () const
	Return true if there is a value handle associated with this value. More...

bool	isUsedByMetadata () const
	Return true if there is metadata referencing this value. More...

bool	isSwiftError () const
	Return true if this value is a swifterror value. More...

const Value *	stripPointerCasts () const
	Strip off pointer casts, all-zero GEPs, and aliases. More...

Value *	stripPointerCasts ()

const Value *	stripPointerCastsAndInvariantGroups () const
	Strip off pointer casts, all-zero GEPs, aliases and invariant group info. More...

Value *	stripPointerCastsAndInvariantGroups ()

const Value *	stripPointerCastsNoFollowAliases () const
	Strip off pointer casts and all-zero GEPs. More...

Value *	stripPointerCastsNoFollowAliases ()

const Value *	stripInBoundsConstantOffsets () const
	Strip off pointer casts and all-constant inbounds GEPs. More...

Value *	stripInBoundsConstantOffsets ()

const Value *	stripAndAccumulateInBoundsConstantOffsets (const DataLayout &DL, APInt &Offset) const
	Accumulate offsets from stripInBoundsConstantOffsets(). More...

Value *	stripAndAccumulateInBoundsConstantOffsets (const DataLayout &DL, APInt &Offset)

const Value *	stripInBoundsOffsets () const
	Strip off pointer casts and inbounds GEPs. More...

Value *	stripInBoundsOffsets ()

uint64_t	getPointerDereferenceableBytes (const DataLayout &DL, bool &CanBeNull) const
	Returns the number of bytes known to be dereferenceable for the pointer value. More...

unsigned	getPointerAlignment (const DataLayout &DL) const
	Returns an alignment of the pointer value. More...

const Value *	DoPHITranslation (const BasicBlock CurBB, const BasicBlock PredBB) const
	Translate PHI node to its predecessor from the given basic block. More...

Value *	DoPHITranslation (const BasicBlock CurBB, const BasicBlock PredBB)

void	mutateType (Type *Ty)
	Mutate the type of this Value to be of the specified type. More...

template<class Compare >
void	sortUseList (Compare Cmp)
	Sort the use-list. More...

void	reverseUseList ()
	Reverse the use-list. More...

void	print (raw_ostream &O, bool IsForDebug=false) const
	Implement operator<< on Value. More...

void	print (raw_ostream &O, ModuleSlotTracker &MST, bool IsForDebug=false) const

void	printAsOperand (raw_ostream &O, bool PrintType=true, const Module *M=nullptr) const
	Print the name of this Value out to the specified raw_ostream. More...

void	printAsOperand (raw_ostream &O, bool PrintType, ModuleSlotTracker &MST) const

Static Public Member Functions
static unsigned	getPointerOperandIndex ()

Static Public Member Functions inherited from llvm::ConcreteOperator< Operator, Instruction::GetElementPtr >
static bool	classof (const Instruction *I)

static bool	classof (const ConstantExpr *CE)

static bool	classof (const Value *V)

Static Public Member Functions inherited from llvm::Operator
static unsigned	getOpcode (const Value *V)
	If V is an Instruction or ConstantExpr, return its opcode. More...

static bool	classof (const Instruction *)

static bool	classof (const ConstantExpr *)

static bool	classof (const Value *V)

Static Public Member Functions inherited from llvm::User
static bool	classof (const Value *V)

Friends
class	GetElementPtrInst

class	ConstantExpr

Additional Inherited Members
Public Types inherited from llvm::User
using	op_iterator = Use *

using	const_op_iterator = const Use *

using	op_range = iterator_range< op_iterator >

using	const_op_range = iterator_range< const_op_iterator >

Public Types inherited from llvm::Value
enum	ValueTy
	Concrete subclass of this. More...

using	use_iterator = use_iterator_impl< Use >

using	const_use_iterator = use_iterator_impl< const Use >

using	user_iterator = user_iterator_impl< User >

using	const_user_iterator = user_iterator_impl< const User >

Static Public Attributes inherited from llvm::Value
static const unsigned	MaxAlignmentExponent = 29
	The maximum alignment for instructions. More...

static const unsigned	MaximumAlignment = 1u << MaxAlignmentExponent

Protected Types inherited from llvm::Value
enum	: unsigned { NumUserOperandsBits = 28 }
	The number of operands in the subclass. More...

Protected Member Functions inherited from llvm::User
void *	operator new (size_t Size)
	Allocate a User with an operand pointer co-allocated. More...

void *	operator new (size_t Size, unsigned Us)
	Allocate a User with the operands co-allocated. More...

void *	operator new (size_t Size, unsigned Us, unsigned DescBytes)
	Allocate a User with the operands co-allocated. More...

	User (Type ty, unsigned vty, Use , unsigned NumOps)

void	allocHungoffUses (unsigned N, bool IsPhi=false)
	Allocate the array of Uses, followed by a pointer (with bottom bit set) to the User. More...

void	growHungoffUses (unsigned N, bool IsPhi=false)
	Grow the number of hung off uses. More...

	~User ()=default

template<int Idx>
Use &	Op ()

template<int Idx>
const Use &	Op () const

Protected Member Functions inherited from llvm::Value
	Value (Type *Ty, unsigned scid)

	~Value ()
	Value's destructor should be virtual by design, but that would require that Value and all of its subclasses have a vtable that effectively duplicates the information in the value ID. More...

unsigned short	getSubclassDataFromValue () const

void	setValueSubclassData (unsigned short D)

Static Protected Member Functions inherited from llvm::User
template<int Idx, typename U >
static Use &	OpFrom (const U *that)

Protected Attributes inherited from llvm::Value
unsigned char	SubclassOptionalData: 7
	Hold subclass data that can be dropped. More...

unsigned	NumUserOperands: NumUserOperandsBits

unsigned	IsUsedByMD: 1

unsigned	HasName: 1

unsigned	HasHungOffUses: 1

unsigned	HasDescriptor: 1

Detailed Description

Definition at line 434 of file Operator.h.

Member Function Documentation

◆ accumulateConstantOffset()

bool llvm::GEPOperator::accumulateConstantOffset	(	const DataLayout &	DL,
		APInt &	Offset
	)		const

Accumulate the constant address offset of this GEP if possible.

This routine accepts an APInt into which it will accumulate the constant offset of this GEP if the GEP is in fact constant. If the GEP is not all-constant, it returns false and the value of the offset APInt is undefined (it is not preserved!). The APInt passed into this routine must be at exactly as wide as the IntPtr type for the address space of the base GEP pointer.

Definition at line 35 of file Operator.cpp.

References assert(), llvm::dyn_cast(), llvm::gep_type_begin(), llvm::gep_type_end(), llvm::APInt::getBitWidth(), llvm::StructLayout::getElementOffset(), llvm::DataLayout::getIndexSizeInBits(), getPointerAddressSpace(), llvm::DataLayout::getStructLayout(), llvm::DataLayout::getTypeAllocSize(), llvm::ConstantInt::getValue(), llvm::ConstantInt::getZExtValue(), llvm::ConstantInt::isZero(), and llvm::APInt::sextOrTrunc().