LLVM 20.0.0git
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#include "llvm/IR/Operator.h"
Public Member Functions | |
DECLARE_TRANSPARENT_OPERAND_ACCESSORS (Value) | |
Transparently provide more efficient getOperand methods. | |
GEPNoWrapFlags | getNoWrapFlags () const |
bool | isInBounds () const |
Test whether this is an inbounds GEP, as defined by LangRef.html. | |
bool | hasNoUnsignedSignedWrap () const |
bool | hasNoUnsignedWrap () const |
std::optional< ConstantRange > | getInRange () const |
Returns the offset of the index with an inrange attachment, or std::nullopt if none. | |
op_iterator | idx_begin () |
const_op_iterator | idx_begin () const |
op_iterator | idx_end () |
const_op_iterator | idx_end () const |
iterator_range< op_iterator > | indices () |
iterator_range< const_op_iterator > | indices () const |
Value * | getPointerOperand () |
const Value * | getPointerOperand () const |
Type * | getPointerOperandType () const |
Method to return the pointer operand as a PointerType. | |
Type * | getSourceElementType () const |
Type * | getResultElementType () const |
unsigned | getPointerAddressSpace () const |
Method to return the address space of the pointer operand. | |
unsigned | getNumIndices () const |
bool | hasIndices () const |
bool | hasAllZeroIndices () const |
Return true if all of the indices of this GEP are zeros. | |
bool | hasAllConstantIndices () const |
Return true if all of the indices of this GEP are constant integers. | |
unsigned | countNonConstantIndices () const |
Align | getMaxPreservedAlignment (const DataLayout &DL) const |
Compute the maximum alignment that this GEP is garranteed to preserve. | |
bool | accumulateConstantOffset (const DataLayout &DL, APInt &Offset, function_ref< bool(Value &, APInt &)> ExternalAnalysis=nullptr) const |
Accumulate the constant address offset of this GEP if possible. | |
bool | collectOffset (const DataLayout &DL, unsigned BitWidth, MapVector< Value *, APInt > &VariableOffsets, APInt &ConstantOffset) const |
Collect the offset of this GEP as a map of Values to their associated APInt multipliers, as well as a total Constant Offset. | |
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. | |
bool | hasPoisonGeneratingFlags () const |
Return true if this operator has flags which may cause this operator to evaluate to poison despite having non-poison inputs. | |
bool | hasPoisonGeneratingAnnotations () const |
Return true if this operator has poison-generating flags, return attributes or metadata. | |
Public Member Functions inherited from llvm::User | |
User (const User &)=delete | |
void | operator delete (void *Usr) |
Free memory allocated for User and Use objects. | |
void | operator delete (void *Usr, unsigned) |
Placement delete - required by std, called if the ctor throws. | |
void | operator delete (void *Usr, unsigned, unsigned) |
Placement delete - required by std, called if the ctor throws. | |
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. | |
MutableArrayRef< uint8_t > | getDescriptor () |
Returns the descriptor co-allocated with this User instance. | |
void | setGlobalVariableNumOperands (unsigned NumOps) |
Set the number of operands on a GlobalVariable. | |
void | setNumHungOffUseOperands (unsigned NumOps) |
Subclasses with hung off uses need to manage the operand count themselves. | |
bool | isDroppable () const |
A droppable user is a user for which uses can be dropped without affecting correctness and should be dropped rather than preventing a transformation from happening. | |
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. | |
bool | replaceUsesOfWith (Value *From, Value *To) |
Replace uses of one Value with another. | |
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. | |
void | dump () const |
Support for debugging, callable in GDB: V->dump() | |
Type * | getType () const |
All values are typed, get the type of this value. | |
LLVMContext & | getContext () const |
All values hold a context through their type. | |
bool | hasName () const |
ValueName * | getValueName () const |
void | setValueName (ValueName *VN) |
StringRef | getName () const |
Return a constant reference to the value's name. | |
void | setName (const Twine &Name) |
Change the name of the value. | |
void | takeName (Value *V) |
Transfer the name from V to this value. | |
std::string | getNameOrAsOperand () const |
void | replaceAllUsesWith (Value *V) |
Change all uses of this to point to a new Value. | |
void | replaceNonMetadataUsesWith (Value *V) |
Change non-metadata uses of this to point to a new Value. | |
void | replaceUsesWithIf (Value *New, llvm::function_ref< bool(Use &U)> ShouldReplace) |
Go through the uses list for this definition and make each use point to "V" if the callback ShouldReplace returns true for the given Use. | |
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. | |
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 use of this value. | |
bool | hasNUses (unsigned N) const |
Return true if this Value has exactly N uses. | |
bool | hasNUsesOrMore (unsigned N) const |
Return true if this value has N uses or more. | |
bool | hasOneUser () const |
Return true if there is exactly one user of this value. | |
Use * | getSingleUndroppableUse () |
Return true if there is exactly one use of this value that cannot be dropped. | |
const Use * | getSingleUndroppableUse () const |
User * | getUniqueUndroppableUser () |
Return true if there is exactly one unique user of this value that cannot be dropped (that user can have multiple uses of this value). | |
const User * | getUniqueUndroppableUser () const |
bool | hasNUndroppableUses (unsigned N) const |
Return true if there this value. | |
bool | hasNUndroppableUsesOrMore (unsigned N) const |
Return true if this value has N uses or more. | |
void | dropDroppableUses (llvm::function_ref< bool(const Use *)> ShouldDrop=[](const Use *) { return true;}) |
Remove every uses that can safely be removed. | |
void | dropDroppableUsesIn (User &Usr) |
Remove every use of this value in User that can safely be removed. | |
bool | isUsedInBasicBlock (const BasicBlock *BB) const |
Check if this value is used in the specified basic block. | |
unsigned | getNumUses () const |
This method computes the number of uses of this Value. | |
void | addUse (Use &U) |
This method should only be used by the Use class. | |
unsigned | getValueID () const |
Return an ID for the concrete type of this object. | |
unsigned | getRawSubclassOptionalData () const |
Return the raw optional flags value contained in this value. | |
void | clearSubclassOptionalData () |
Clear the optional flags contained in this value. | |
bool | hasSameSubclassOptionalData (const Value *V) const |
Check the optional flags for equality. | |
bool | hasValueHandle () const |
Return true if there is a value handle associated with this value. | |
bool | isUsedByMetadata () const |
Return true if there is metadata referencing this value. | |
bool | isSwiftError () const |
Return true if this value is a swifterror value. | |
const Value * | stripPointerCasts () const |
Strip off pointer casts, all-zero GEPs and address space casts. | |
Value * | stripPointerCasts () |
const Value * | stripPointerCastsAndAliases () const |
Strip off pointer casts, all-zero GEPs, address space casts, and aliases. | |
Value * | stripPointerCastsAndAliases () |
const Value * | stripPointerCastsSameRepresentation () const |
Strip off pointer casts, all-zero GEPs and address space casts but ensures the representation of the result stays the same. | |
Value * | stripPointerCastsSameRepresentation () |
const Value * | stripPointerCastsForAliasAnalysis () const |
Strip off pointer casts, all-zero GEPs, single-argument phi nodes and invariant group info. | |
Value * | stripPointerCastsForAliasAnalysis () |
const Value * | stripInBoundsConstantOffsets () const |
Strip off pointer casts and all-constant inbounds GEPs. | |
Value * | stripInBoundsConstantOffsets () |
const Value * | stripAndAccumulateConstantOffsets (const DataLayout &DL, APInt &Offset, bool AllowNonInbounds, bool AllowInvariantGroup=false, function_ref< bool(Value &Value, APInt &Offset)> ExternalAnalysis=nullptr) const |
Accumulate the constant offset this value has compared to a base pointer. | |
Value * | stripAndAccumulateConstantOffsets (const DataLayout &DL, APInt &Offset, bool AllowNonInbounds, bool AllowInvariantGroup=false) |
const Value * | stripAndAccumulateInBoundsConstantOffsets (const DataLayout &DL, APInt &Offset) const |
This is a wrapper around stripAndAccumulateConstantOffsets with the in-bounds requirement set to false. | |
Value * | stripAndAccumulateInBoundsConstantOffsets (const DataLayout &DL, APInt &Offset) |
const Value * | stripInBoundsOffsets (function_ref< void(const Value *)> Func=[](const Value *) {}) const |
Strip off pointer casts and inbounds GEPs. | |
Value * | stripInBoundsOffsets (function_ref< void(const Value *)> Func=[](const Value *) {}) |
std::optional< int64_t > | getPointerOffsetFrom (const Value *Other, const DataLayout &DL) const |
If this ptr is provably equal to Other plus a constant offset, return that offset in bytes. | |
bool | canBeFreed () const |
Return true if the memory object referred to by V can by freed in the scope for which the SSA value defining the allocation is statically defined. | |
uint64_t | getPointerDereferenceableBytes (const DataLayout &DL, bool &CanBeNull, bool &CanBeFreed) const |
Returns the number of bytes known to be dereferenceable for the pointer value. | |
Align | getPointerAlignment (const DataLayout &DL) const |
Returns an alignment of the pointer value. | |
const Value * | DoPHITranslation (const BasicBlock *CurBB, const BasicBlock *PredBB) const |
Translate PHI node to its predecessor from the given basic block. | |
Value * | DoPHITranslation (const BasicBlock *CurBB, const BasicBlock *PredBB) |
void | mutateType (Type *Ty) |
Mutate the type of this Value to be of the specified type. | |
template<class Compare > | |
void | sortUseList (Compare Cmp) |
Sort the use-list. | |
void | reverseUseList () |
Reverse the use-list. | |
void | print (raw_ostream &O, bool IsForDebug=false) const |
Implement operator<< on Value. | |
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. | |
void | printAsOperand (raw_ostream &O, bool PrintType, ModuleSlotTracker &MST) const |
Static Public Member Functions | |
static unsigned | getPointerOperandIndex () |
static bool | accumulateConstantOffset (Type *SourceType, ArrayRef< const Value * > Index, const DataLayout &DL, APInt &Offset, function_ref< bool(Value &, APInt &)> ExternalAnalysis=nullptr) |
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. | |
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) |
Static Public Member Functions inherited from llvm::Value | |
static void | dropDroppableUse (Use &U) |
Remove the droppable use U . | |
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 constexpr unsigned | MaxAlignmentExponent = 32 |
The maximum alignment for instructions. | |
static constexpr uint64_t | MaximumAlignment = 1ULL << MaxAlignmentExponent |
Protected Types inherited from llvm::Value | |
enum | : unsigned { NumUserOperandsBits = 27 } |
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. | |
void * | operator new (size_t Size, unsigned Us) |
Allocate a User with the operands co-allocated. | |
void * | operator new (size_t Size, unsigned Us, unsigned DescBytes) |
Allocate a User with the operands co-allocated. | |
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. | |
void | growHungoffUses (unsigned N, bool IsPhi=false) |
Grow the number of hung off uses. | |
~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. | |
void | getAllMetadata (SmallVectorImpl< std::pair< unsigned, MDNode * > > &MDs) const |
Appends all metadata attached to this value to MDs , sorting by KindID. | |
bool | hasMetadata () const |
Return true if this value has any metadata attached to it. | |
bool | eraseMetadata (unsigned KindID) |
Erase all metadata attachments with the given kind. | |
void | eraseMetadataIf (function_ref< bool(unsigned, MDNode *)> Pred) |
Erase all metadata attachments matching the given predicate. | |
void | clearMetadata () |
Erase all metadata attached to this Value. | |
MDNode * | getMetadataImpl (unsigned KindID) const |
Get metadata for the given kind, if any. | |
unsigned short | getSubclassDataFromValue () const |
void | setValueSubclassData (unsigned short D) |
MDNode * | getMetadata (unsigned KindID) const |
Get the current metadata attachments for the given kind, if any. | |
MDNode * | getMetadata (StringRef Kind) const |
void | getMetadata (unsigned KindID, SmallVectorImpl< MDNode * > &MDs) const |
Appends all attachments with the given ID to MDs in insertion order. | |
void | getMetadata (StringRef Kind, SmallVectorImpl< MDNode * > &MDs) const |
bool | hasMetadata (unsigned KindID) const |
Return true if this value has the given type of metadata attached. | |
bool | hasMetadata (StringRef Kind) const |
void | setMetadata (unsigned KindID, MDNode *Node) |
Set a particular kind of metadata attachment. | |
void | setMetadata (StringRef Kind, MDNode *Node) |
void | addMetadata (unsigned KindID, MDNode &MD) |
Add a metadata attachment. | |
void | addMetadata (StringRef Kind, MDNode &MD) |
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. | |
unsigned | NumUserOperands: NumUserOperandsBits |
unsigned | IsUsedByMD: 1 |
unsigned | HasName: 1 |
unsigned | HasMetadata: 1 |
unsigned | HasHungOffUses: 1 |
unsigned | HasDescriptor: 1 |
Definition at line 400 of file Operator.h.
bool llvm::GEPOperator::accumulateConstantOffset | ( | const DataLayout & | DL, |
APInt & | Offset, | ||
function_ref< bool(Value &, APInt &)> | ExternalAnalysis = nullptr |
||
) | const |
Accumulate the constant address offset of this GEP if possible.
This routine accepts an APInt into which it will try to accumulate the constant offset of this GEP.
If ExternalAnalysis
is provided it will be used to calculate a offset when a operand of GEP is not constant. For example, for a value ExternalAnalysis
might try to calculate a lower bound. If ExternalAnalysis
is successful, it should return true.
If the ExternalAnalysis
returns false or the value returned by ExternalAnalysis
results in a overflow/underflow, this routine 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 111 of file Operator.cpp.
References accumulateConstantOffset(), assert(), DL, llvm::drop_begin(), getPointerAddressSpace(), getSourceElementType(), llvm::Offset, and llvm::User::operand_values().
Referenced by accumulateConstantOffset().
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Definition at line 122 of file Operator.cpp.
References DL, llvm::StructLayout::getElementOffset(), llvm::generic_gep_type_iterator< ItTy >::getIndexedType(), llvm::Type::isIntegerTy(), llvm::Type::isScalableTy(), llvm::Offset, Size, and llvm::APInt::smul_ov().
bool llvm::GEPOperator::collectOffset | ( | const DataLayout & | DL, |
unsigned | BitWidth, | ||
MapVector< Value *, APInt > & | VariableOffsets, | ||
APInt & | ConstantOffset | ||
) | const |
Collect the offset of this GEP as a map of Values to their associated APInt multipliers, as well as a total Constant Offset.
Definition at line 202 of file Operator.cpp.
References assert(), llvm::BitWidth, DL, llvm::gep_type_begin(), llvm::gep_type_end(), llvm::StructLayout::getElementOffset(), getPointerAddressSpace(), llvm::MapVector< KeyT, ValueT, MapType, VectorType >::insert(), llvm::APInt::isZero(), and Size.
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Definition at line 493 of file Operator.h.
References llvm::count_if(), indices(), and use.
llvm::GEPOperator::DECLARE_TRANSPARENT_OPERAND_ACCESSORS | ( | Value | ) |
Transparently provide more efficient getOperand methods.
std::optional< ConstantRange > llvm::GEPOperator::getInRange | ( | ) | const |
Returns the offset of the index with an inrange attachment, or std::nullopt if none.
Definition at line 80 of file Operator.cpp.
Align llvm::GEPOperator::getMaxPreservedAlignment | ( | const DataLayout & | DL | ) | const |
Compute the maximum alignment that this GEP is garranteed to preserve.
compute the worse possible offset for every level of the GEP et accumulate the minimum alignment into Result.
If the index isn't known, we take 1 because it is the index that will give the worse alignment of the offset.
Definition at line 86 of file Operator.cpp.
References assert(), DL, llvm::gep_type_begin(), llvm::gep_type_end(), llvm::StructLayout::getElementOffset(), llvm::ConstantInt::getZExtValue(), llvm::Value::MaximumAlignment, llvm::MinAlign(), and llvm::Offset.
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Definition at line 406 of file Operator.h.
References llvm::GEPNoWrapFlags::fromRaw(), and llvm::Value::SubclassOptionalData.
Referenced by hasNoUnsignedSignedWrap(), hasNoUnsignedWrap(), isInBounds(), and LLVMGEPGetNoWrapFlags().
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Definition at line 461 of file Operator.h.
References llvm::User::getNumOperands().
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Method to return the address space of the pointer operand.
Definition at line 457 of file Operator.h.
References llvm::Type::getPointerAddressSpace(), and getPointerOperandType().
Referenced by accumulateConstantOffset(), and collectOffset().
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Definition at line 438 of file Operator.h.
References llvm::User::getOperand().
Referenced by llvm::InstCombinerImpl::foldGEPICmp(), and getPointerOperandType().
Definition at line 441 of file Operator.h.
References llvm::User::getOperand().
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Definition at line 444 of file Operator.h.
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Method to return the pointer operand as a PointerType.
Definition at line 449 of file Operator.h.
References getPointerOperand(), and llvm::Value::getType().
Referenced by getPointerAddressSpace().
Type * llvm::GEPOperator::getResultElementType | ( | ) | const |
Definition at line 74 of file Operator.cpp.
References I.
Type * llvm::GEPOperator::getSourceElementType | ( | ) | const |
Definition at line 68 of file Operator.cpp.
References I.
Referenced by accumulateConstantOffset(), llvm::InstCombinerImpl::foldGEPICmp(), and llvm::Value::getPointerOffsetFrom().
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Return true if all of the indices of this GEP are constant integers.
If so, the result pointer and the first operand have a constant offset between them.
Definition at line 485 of file Operator.h.
References E, I, idx_begin(), and idx_end().
Referenced by llvm::InstCombinerImpl::foldGEPICmp(), and transformToIndexedCompare().
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Return true if all of the indices of this GEP are zeros.
If so, the result pointer and the first operand have the same value, just potentially different types.
Definition at line 472 of file Operator.h.
References llvm::CallingConv::C, E, I, idx_begin(), and idx_end().
Referenced by evaluateICmpRelation().
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Definition at line 465 of file Operator.h.
References llvm::User::getNumOperands().
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Definition at line 413 of file Operator.h.
References getNoWrapFlags(), and llvm::GEPNoWrapFlags::hasNoUnsignedSignedWrap().
Referenced by llvm::emitGEPOffset().
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Definition at line 417 of file Operator.h.
References getNoWrapFlags(), and llvm::GEPNoWrapFlags::hasNoUnsignedWrap().
Referenced by llvm::emitGEPOffset().
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Definition at line 425 of file Operator.h.
References llvm::User::op_begin().
Referenced by hasAllConstantIndices(), hasAllZeroIndices(), and indices().
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Definition at line 426 of file Operator.h.
References llvm::User::op_begin().
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Definition at line 427 of file Operator.h.
References llvm::User::op_end().
Referenced by hasAllConstantIndices(), hasAllZeroIndices(), and indices().
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Definition at line 428 of file Operator.h.
References llvm::User::op_end().
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Definition at line 430 of file Operator.h.
References idx_begin(), idx_end(), and llvm::make_range().
Referenced by countNonConstantIndices().
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Definition at line 434 of file Operator.h.
References idx_begin(), idx_end(), and llvm::make_range().
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Test whether this is an inbounds GEP, as defined by LangRef.html.
Definition at line 411 of file Operator.h.
References getNoWrapFlags(), and llvm::GEPNoWrapFlags::isInBounds().
Referenced by evaluateICmpRelation(), llvm::InstCombinerImpl::foldGEPICmp(), isMergedGEPInBounds(), and llvm::InstCombinerImpl::OptimizePointerDifference().