llvm::Instruction Class Reference

#include "llvm/IR/Instruction.h"

Inheritance diagram for llvm::Instruction:

Public Types
enum	OperationEquivalenceFlags { CompareIgnoringAlignment = 1<<0 , CompareUsingScalarTypes = 1<<1 }
	When checking for operation equivalence (using isSameOperationAs) it is sometimes useful to ignore certain attributes. More...
enum	TermOps
enum	UnaryOps
enum	BinaryOps
enum	MemoryOps
enum	CastOps
enum	FuncletPadOps
enum	OtherOps
using	InstListType = SymbolTableList< Instruction, ilist_iterator_bits< true >, ilist_parent< BasicBlock > >
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 >

Public Member Functions
iterator_range< simple_ilist< DbgRecord >::iterator >	cloneDebugInfoFrom (const Instruction *From, std::optional< simple_ilist< DbgRecord >::iterator > FromHere=std::nullopt, bool InsertAtHead=false)
	Clone any debug-info attached to From onto this instruction.
iterator_range< simple_ilist< DbgRecord >::iterator >	getDbgRecordRange () const
	Return a range over the DbgRecords attached to this instruction.
std::optional< simple_ilist< DbgRecord >::iterator >	getDbgReinsertionPosition ()
	Return an iterator to the position of the "Next" DbgRecord after this instruction, or std::nullopt.
bool	hasDbgRecords () const
	Returns true if any DbgRecords are attached to this instruction.
void	adoptDbgRecords (BasicBlock *BB, InstListType::iterator It, bool InsertAtHead)
	Transfer any DbgRecords on the position It onto this instruction, by simply adopting the sequence of DbgRecords (which is efficient) if possible, by merging two sequences otherwise.
void	dropDbgRecords ()
	Erase any DbgRecords attached to this instruction.
void	dropOneDbgRecord (DbgRecord *I)
	Erase a single DbgRecord I that is attached to this instruction.
void	handleMarkerRemoval ()
	Handle the debug-info implications of this instruction being removed.
	Instruction (const Instruction &)=delete
Instruction &	operator= (const Instruction &)=delete
Instruction *	user_back ()
	Specialize the methods defined in Value, as we know that an instruction can only be used by other instructions.
const Instruction *	user_back () const
const Module *	getModule () const
	Return the module owning the function this instruction belongs to or nullptr it the function does not have a module.
Module *	getModule ()
const Function *	getFunction () const
	Return the function this instruction belongs to.
Function *	getFunction ()
const DataLayout &	getDataLayout () const
	Get the data layout of the module this instruction belongs to.
void	removeFromParent ()
	This method unlinks 'this' from the containing basic block, but does not delete it.
InstListType::iterator	eraseFromParent ()
	This method unlinks 'this' from the containing basic block and deletes it.
void	insertBefore (Instruction *InsertPos)
	Insert an unlinked instruction into a basic block immediately before the specified instruction.
void	insertBefore (InstListType::iterator InsertPos)
	Insert an unlinked instruction into a basic block immediately before the specified instruction.
void	insertAfter (Instruction *InsertPos)
	Insert an unlinked instruction into a basic block immediately after the specified instruction.
InstListType::iterator	insertInto (BasicBlock *ParentBB, InstListType::iterator It)
	Inserts an unlinked instruction into ParentBB at position It and returns the iterator of the inserted instruction.
void	insertBefore (BasicBlock &BB, InstListType::iterator InsertPos)
void	moveBefore (Instruction *MovePos)
	Unlink this instruction from its current basic block and insert it into the basic block that MovePos lives in, right before MovePos.
void	moveBeforePreserving (Instruction *MovePos)
	Perform a moveBefore operation, while signalling that the caller intends to preserve the original ordering of instructions.
void	moveBefore (BasicBlock &BB, InstListType::iterator I)
	Unlink this instruction and insert into BB before I.
void	moveBeforePreserving (BasicBlock &BB, InstListType::iterator I)
	(See other overload for moveBeforePreserving).
void	moveAfter (Instruction *MovePos)
	Unlink this instruction from its current basic block and insert it into the basic block that MovePos lives in, right after MovePos.
void	moveAfterPreserving (Instruction *MovePos)
	See moveBeforePreserving .
bool	comesBefore (const Instruction *Other) const
	Given an instruction Other in the same basic block as this instruction, return true if this instruction comes before Other.
std::optional< InstListType::iterator >	getInsertionPointAfterDef ()
	Get the first insertion point at which the result of this instruction is defined.
unsigned	getOpcode () const
	Returns a member of one of the enums like Instruction::Add.
const char *	getOpcodeName () const
bool	isTerminator () const
bool	isUnaryOp () const
bool	isBinaryOp () const
bool	isIntDivRem () const
bool	isShift () const
bool	isCast () const
bool	isFuncletPad () const
bool	isSpecialTerminator () const
bool	isOnlyUserOfAnyOperand ()
	It checks if this instruction is the only user of at least one of its operands.
bool	isLogicalShift () const
	Return true if this is a logical shift left or a logical shift right.
bool	isArithmeticShift () const
	Return true if this is an arithmetic shift right.
bool	isBitwiseLogicOp () const
	Return true if this is and/or/xor.
bool	hasMetadata () const
	Return true if this instruction has any metadata attached to it.
bool	hasMetadataOtherThanDebugLoc () const
	Return true if this instruction has metadata attached to it other than a debug location.
bool	hasMetadata (unsigned KindID) const
	Return true if this instruction has the given type of metadata attached.
bool	hasMetadata (StringRef Kind) const
	Return true if this instruction has the given type of metadata attached.
MDNode *	getMetadata (unsigned KindID) const
	Get the metadata of given kind attached to this Instruction.
MDNode *	getMetadata (StringRef Kind) const
	Get the metadata of given kind attached to this Instruction.
void	getAllMetadata (SmallVectorImpl< std::pair< unsigned, MDNode * > > &MDs) const
	Get all metadata attached to this Instruction.
void	getAllMetadataOtherThanDebugLoc (SmallVectorImpl< std::pair< unsigned, MDNode * > > &MDs) const
	This does the same thing as getAllMetadata, except that it filters out the debug location.
void	setMetadata (unsigned KindID, MDNode *Node)
	Set the metadata of the specified kind to the specified node.
void	setMetadata (StringRef Kind, MDNode *Node)
void	copyMetadata (const Instruction &SrcInst, ArrayRef< unsigned > WL=ArrayRef< unsigned >())
	Copy metadata from SrcInst to this instruction.
void	eraseMetadataIf (function_ref< bool(unsigned, MDNode *)> Pred)
	Erase all metadata that matches the predicate.
void	swapProfMetadata ()
	If the instruction has "branch_weights" MD_prof metadata and the MDNode has three operands (including name string), swap the order of the metadata.
void	addAnnotationMetadata (StringRef Annotation)
	Adds an !annotation metadata node with Annotation to this instruction.
void	addAnnotationMetadata (SmallVector< StringRef > Annotations)
	Adds an !annotation metadata node with an array of Annotations as a tuple to this instruction.
AAMDNodes	getAAMetadata () const
	Returns the AA metadata for this instruction.
void	setAAMetadata (const AAMDNodes &N)
	Sets the AA metadata on this instruction from the AAMDNodes structure.
void	setNoSanitizeMetadata ()
	Sets the nosanitize metadata on this instruction.
bool	extractProfTotalWeight (uint64_t &TotalVal) const
	Retrieve total raw weight values of a branch.
void	setDebugLoc (DebugLoc Loc)
	Set the debug location information for this instruction.
const DebugLoc &	getDebugLoc () const
	Return the debug location for this node as a DebugLoc.
const DebugLoc &	getStableDebugLoc () const
	Fetch the debug location for this node, unless this is a debug intrinsic, in which case fetch the debug location of the next non-debug node.
void	setHasNoUnsignedWrap (bool b=true)
	Set or clear the nuw flag on this instruction, which must be an operator which supports this flag.
void	setHasNoSignedWrap (bool b=true)
	Set or clear the nsw flag on this instruction, which must be an operator which supports this flag.
void	setIsExact (bool b=true)
	Set or clear the exact flag on this instruction, which must be an operator which supports this flag.
void	setNonNeg (bool b=true)
	Set or clear the nneg flag on this instruction, which must be a zext instruction.
bool	hasNoUnsignedWrap () const LLVM_READONLY
	Determine whether the no unsigned wrap flag is set.
bool	hasNoSignedWrap () const LLVM_READONLY
	Determine whether the no signed wrap flag is set.
bool	hasNonNeg () const LLVM_READONLY
	Determine whether the the nneg flag is set.
bool	hasPoisonGeneratingFlags () const LLVM_READONLY
	Return true if this operator has flags which may cause this instruction to evaluate to poison despite having non-poison inputs.
void	dropPoisonGeneratingFlags ()
	Drops flags that may cause this instruction to evaluate to poison despite having non-poison inputs.
bool	hasPoisonGeneratingMetadata () const LLVM_READONLY
	Return true if this instruction has poison-generating metadata.
void	dropPoisonGeneratingMetadata ()
	Drops metadata that may generate poison.
bool	hasPoisonGeneratingReturnAttributes () const LLVM_READONLY
	Return true if this instruction has poison-generating attribute.
void	dropPoisonGeneratingReturnAttributes ()
	Drops return attributes that may generate poison.
bool	hasPoisonGeneratingAnnotations () const
	Return true if this instruction has poison-generating flags, return attributes or metadata.
void	dropPoisonGeneratingAnnotations ()
	Drops flags, return attributes and metadata that may generate poison.
void	dropUBImplyingAttrsAndUnknownMetadata (ArrayRef< unsigned > KnownIDs={})
	This function drops non-debug unknown metadata (through dropUnknownNonDebugMetadata).
void	dropUBImplyingAttrsAndMetadata ()
	Drop any attributes or metadata that can cause immediate undefined behavior.
bool	isExact () const LLVM_READONLY
	Determine whether the exact flag is set.
void	setFast (bool B)
	Set or clear all fast-math-flags on this instruction, which must be an operator which supports this flag.
void	setHasAllowReassoc (bool B)
	Set or clear the reassociation flag on this instruction, which must be an operator which supports this flag.
void	setHasNoNaNs (bool B)
	Set or clear the no-nans flag on this instruction, which must be an operator which supports this flag.
void	setHasNoInfs (bool B)
	Set or clear the no-infs flag on this instruction, which must be an operator which supports this flag.
void	setHasNoSignedZeros (bool B)
	Set or clear the no-signed-zeros flag on this instruction, which must be an operator which supports this flag.
void	setHasAllowReciprocal (bool B)
	Set or clear the allow-reciprocal flag on this instruction, which must be an operator which supports this flag.
void	setHasAllowContract (bool B)
	Set or clear the allow-contract flag on this instruction, which must be an operator which supports this flag.
void	setHasApproxFunc (bool B)
	Set or clear the approximate-math-functions flag on this instruction, which must be an operator which supports this flag.
void	setFastMathFlags (FastMathFlags FMF)
	Convenience function for setting multiple fast-math flags on this instruction, which must be an operator which supports these flags.
void	copyFastMathFlags (FastMathFlags FMF)
	Convenience function for transferring all fast-math flag values to this instruction, which must be an operator which supports these flags.
bool	isFast () const LLVM_READONLY
	Determine whether all fast-math-flags are set.
bool	hasAllowReassoc () const LLVM_READONLY
	Determine whether the allow-reassociation flag is set.
bool	hasNoNaNs () const LLVM_READONLY
	Determine whether the no-NaNs flag is set.
bool	hasNoInfs () const LLVM_READONLY
	Determine whether the no-infs flag is set.
bool	hasNoSignedZeros () const LLVM_READONLY
	Determine whether the no-signed-zeros flag is set.
bool	hasAllowReciprocal () const LLVM_READONLY
	Determine whether the allow-reciprocal flag is set.
bool	hasAllowContract () const LLVM_READONLY
	Determine whether the allow-contract flag is set.
bool	hasApproxFunc () const LLVM_READONLY
	Determine whether the approximate-math-functions flag is set.
FastMathFlags	getFastMathFlags () const LLVM_READONLY
	Convenience function for getting all the fast-math flags, which must be an operator which supports these flags.
void	copyFastMathFlags (const Instruction *I)
	Copy I's fast-math flags.
void	copyIRFlags (const Value *V, bool IncludeWrapFlags=true)
	Convenience method to copy supported exact, fast-math, and (optionally) wrapping flags from V to this instruction.
void	andIRFlags (const Value *V)
	Logical 'and' of any supported wrapping, exact, and fast-math flags of V and this instruction.
void	applyMergedLocation (DILocation *LocA, DILocation *LocB)
	Merge 2 debug locations and apply it to the Instruction.
void	updateLocationAfterHoist ()
	Updates the debug location given that the instruction has been hoisted from a block to a predecessor of that block.
void	dropLocation ()
	Drop the instruction's debug location.
void	mergeDIAssignID (ArrayRef< const Instruction * > SourceInstructions)
	Merge the DIAssignID metadata from this instruction and those attached to instructions in SourceInstructions.
bool	isAssociative () const LLVM_READONLY
	Return true if the instruction is associative:
bool	isCommutative () const LLVM_READONLY
	Return true if the instruction is commutative:
bool	isIdempotent () const
	Return true if the instruction is idempotent:
bool	isNilpotent () const
	Return true if the instruction is nilpotent:
bool	mayWriteToMemory () const LLVM_READONLY
	Return true if this instruction may modify memory.
bool	mayReadFromMemory () const LLVM_READONLY
	Return true if this instruction may read memory.
bool	mayReadOrWriteMemory () const
	Return true if this instruction may read or write memory.
bool	isAtomic () const LLVM_READONLY
	Return true if this instruction has an AtomicOrdering of unordered or higher.
bool	hasAtomicLoad () const LLVM_READONLY
	Return true if this atomic instruction loads from memory.
bool	hasAtomicStore () const LLVM_READONLY
	Return true if this atomic instruction stores to memory.
bool	isVolatile () const LLVM_READONLY
	Return true if this instruction has a volatile memory access.
Type *	getAccessType () const LLVM_READONLY
	Return the type this instruction accesses in memory, if any.
bool	mayThrow (bool IncludePhaseOneUnwind=false) const LLVM_READONLY
	Return true if this instruction may throw an exception.
bool	isFenceLike () const
	Return true if this instruction behaves like a memory fence: it can load or store to memory location without being given a memory location.
bool	mayHaveSideEffects () const LLVM_READONLY
	Return true if the instruction may have side effects.
bool	isSafeToRemove () const LLVM_READONLY
	Return true if the instruction can be removed if the result is unused.
bool	willReturn () const LLVM_READONLY
	Return true if the instruction will return (unwinding is considered as a form of returning control flow here).
bool	isEHPad () const
	Return true if the instruction is a variety of EH-block.
bool	isLifetimeStartOrEnd () const LLVM_READONLY
	Return true if the instruction is a llvm.lifetime.start or llvm.lifetime.end marker.
bool	isLaunderOrStripInvariantGroup () const LLVM_READONLY
	Return true if the instruction is a llvm.launder.invariant.group or llvm.strip.invariant.group.
bool	isDebugOrPseudoInst () const LLVM_READONLY
	Return true if the instruction is a DbgInfoIntrinsic or PseudoProbeInst.
const Instruction *	getNextNonDebugInstruction (bool SkipPseudoOp=false) const
	Return a pointer to the next non-debug instruction in the same basic block as 'this', or nullptr if no such instruction exists.
Instruction *	getNextNonDebugInstruction (bool SkipPseudoOp=false)
const Instruction *	getPrevNonDebugInstruction (bool SkipPseudoOp=false) const
	Return a pointer to the previous non-debug instruction in the same basic block as 'this', or nullptr if no such instruction exists.
Instruction *	getPrevNonDebugInstruction (bool SkipPseudoOp=false)
Instruction *	clone () const
	Create a copy of 'this' instruction that is identical in all ways except the following:
bool	isIdenticalTo (const Instruction *I) const LLVM_READONLY
	Return true if the specified instruction is exactly identical to the current one.
bool	isIdenticalToWhenDefined (const Instruction *I) const LLVM_READONLY
	This is like isIdenticalTo, except that it ignores the SubclassOptionalData flags, which may specify conditions under which the instruction's result is undefined.
bool	isSameOperationAs (const Instruction *I, unsigned flags=0) const LLVM_READONLY
	This function determines if the specified instruction executes the same operation as the current one.
bool	hasSameSpecialState (const Instruction *I2, bool IgnoreAlignment=false) const LLVM_READONLY
	This function determines if the speficied instruction has the same "special" characteristics as the current one.
bool	isUsedOutsideOfBlock (const BasicBlock *BB) const LLVM_READONLY
	Return true if there are any uses of this instruction in blocks other than the specified block.
unsigned	getNumSuccessors () const LLVM_READONLY
	Return the number of successors that this instruction has.
BasicBlock *	getSuccessor (unsigned Idx) const LLVM_READONLY
	Return the specified successor. This instruction must be a terminator.
void	setSuccessor (unsigned Idx, BasicBlock *BB)
	Update the specified successor to point at the provided block.
void	replaceSuccessorWith (BasicBlock *OldBB, BasicBlock *NewBB)
	Replace specified successor OldBB to point at the provided block.
void	dropUnknownNonDebugMetadata (ArrayRef< unsigned > KnownIDs=std::nullopt)
	Drop all unknown metadata except for debug locations.
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
Public Member Functions inherited from llvm::ilist_node_with_parent< Instruction, BasicBlock, ilist_iterator_bits< true >, ilist_parent< BasicBlock > >
Instruction *	getPrevNode ()
const Instruction *	getPrevNode () const
	Get the previous node, or nullptr for the list head.
Instruction *	getNextNode ()
	Get the next node, or nullptr for the list tail.
const Instruction *	getNextNode () const
	Get the next node, or nullptr for the list tail.
Public Member Functions inherited from llvm::ilist_node_impl< ilist_detail::compute_node_options< T, Options... >::type >
self_iterator	getIterator ()
const_self_iterator	getIterator () const
reverse_self_iterator	getReverseIterator ()
const_reverse_self_iterator	getReverseIterator () const
bool	isSentinel () const
	Check whether this is the sentinel node.
Public Member Functions inherited from llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >
const ParentTy *	getParent () const
ParentTy *	getParent ()
void	setParent (ParentTy *Parent)

Static Public Member Functions
static const char *	getOpcodeName (unsigned Opcode)
static bool	isTerminator (unsigned Opcode)
static bool	isUnaryOp (unsigned Opcode)
static bool	isBinaryOp (unsigned Opcode)
static bool	isIntDivRem (unsigned Opcode)
static bool	isShift (unsigned Opcode)
	Determine if the Opcode is one of the shift instructions.
static bool	isBitwiseLogicOp (unsigned Opcode)
	Determine if the Opcode is and/or/xor.
static bool	isCast (unsigned Opcode)
	Determine if the Opcode is one of the CastInst instructions.
static bool	isFuncletPad (unsigned Opcode)
	Determine if the Opcode is one of the FuncletPadInst instructions.
static bool	isSpecialTerminator (unsigned Opcode)
	Returns true if the Opcode is a "special" terminator that does more than branch to a successor (e.g.
static bool	isAssociative (unsigned Opcode)
static bool	isCommutative (unsigned Opcode)
static bool	isIdempotent (unsigned Opcode)
static bool	isNilpotent (unsigned Opcode)
static bool	classof (const Value *V)
	Methods for support type inquiry through isa, cast, and dyn_cast:
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.

Public Attributes
DbgMarker *	DebugMarker = nullptr
	Optional marker recording the position for debugging information that takes effect immediately before this instruction.

Protected Types
using	OpaqueField = Bitfield::Element< uint16_t, 0, 15 >
template<unsigned Offset>
using	AlignmentBitfieldElementT = typename Bitfield::Element< unsigned, Offset, 6, Value::MaxAlignmentExponent >
template<unsigned Offset>
using	BoolBitfieldElementT = typename Bitfield::Element< bool, Offset, 1 >
template<unsigned Offset>
using	AtomicOrderingBitfieldElementT = typename Bitfield::Element< AtomicOrdering, Offset, 3, AtomicOrdering::LAST >
Protected Types inherited from llvm::Value
enum	: unsigned { NumUserOperandsBits = 27 }
	The number of operands in the subclass. More...
Protected Types inherited from llvm::ilist_node_impl< ilist_detail::compute_node_options< T, Options... >::type >
using	self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, ilist_detail::compute_node_options< T, Options... >::type, false, false >::type
using	const_self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, ilist_detail::compute_node_options< T, Options... >::type, false, true >::type
using	reverse_self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, ilist_detail::compute_node_options< T, Options... >::type, true, false >::type
using	const_reverse_self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, ilist_detail::compute_node_options< T, Options... >::type, true, true >::type

Protected Member Functions
	~Instruction ()
template<typename BitfieldElement >
BitfieldElement::Type	getSubclassData () const
template<typename BitfieldElement >
void	setSubclassData (typename BitfieldElement::Type Value)
	Instruction (Type *Ty, unsigned iType, Use *Ops, unsigned NumOps, InsertPosition InsertBefore=nullptr)
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)
Protected Member Functions inherited from llvm::ilist_node_with_parent< Instruction, BasicBlock, ilist_iterator_bits< true >, ilist_parent< BasicBlock > >
	ilist_node_with_parent ()=default
Protected Member Functions inherited from llvm::ilist_node_impl< ilist_detail::compute_node_options< T, Options... >::type >
	ilist_node_impl ()=default

Friends
class	SymbolTableListTraits< Instruction, ilist_iterator_bits< true >, ilist_parent< BasicBlock > >
class	BasicBlock
	Various leaf nodes.

Additional Inherited Members
Static Public Attributes inherited from llvm::Value
static constexpr unsigned	MaxAlignmentExponent = 32
	The maximum alignment for instructions.
static constexpr uint64_t	MaximumAlignment = 1ULL << MaxAlignmentExponent
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

Detailed Description

Definition at line 65 of file Instruction.h.

Member Typedef Documentation

AlignmentBitfieldElementT

template<unsigned Offset>

using llvm::Instruction::AlignmentBitfieldElementT = typename Bitfield::Element<unsigned, Offset, 6, Value::MaxAlignmentExponent>

protected

Definition at line 143 of file Instruction.h.

AtomicOrderingBitfieldElementT

template<unsigned Offset>

using llvm::Instruction::AtomicOrderingBitfieldElementT = typename Bitfield::Element<AtomicOrdering, Offset, 3, AtomicOrdering::LAST>

protected

Definition at line 151 of file Instruction.h.

BoolBitfieldElementT

template<unsigned Offset>

using llvm::Instruction::BoolBitfieldElementT = typename Bitfield::Element<bool, Offset, 1>

protected

Definition at line 148 of file Instruction.h.

InstListType

using llvm::Instruction::InstListType = SymbolTableList<Instruction, ilist_iterator_bits<true>, ilist_parent<BasicBlock> >

Definition at line 70 of file Instruction.h.

OpaqueField

using llvm::Instruction::OpaqueField = Bitfield::Element<uint16_t, 0, 15>

protected

Definition at line 135 of file Instruction.h.

Member Enumeration Documentation

BinaryOps

enum llvm::Instruction::BinaryOps

Definition at line 959 of file Instruction.h.

CastOps

enum llvm::Instruction::CastOps

Definition at line 973 of file Instruction.h.

FuncletPadOps

enum llvm::Instruction::FuncletPadOps

Definition at line 980 of file Instruction.h.

MemoryOps

enum llvm::Instruction::MemoryOps

Definition at line 966 of file Instruction.h.

OperationEquivalenceFlags

enum llvm::Instruction::OperationEquivalenceFlags

When checking for operation equivalence (using isSameOperationAs) it is sometimes useful to ignore certain attributes.

Enumerator
CompareIgnoringAlignment	Check for equivalence ignoring load/store alignment.
CompareUsingScalarTypes	Check for equivalence treating a type and a vector of that type as equivalent.

Definition at line 888 of file Instruction.h.

OtherOps

enum llvm::Instruction::OtherOps

Definition at line 987 of file Instruction.h.

TermOps

enum llvm::Instruction::TermOps

Definition at line 945 of file Instruction.h.

UnaryOps

enum llvm::Instruction::UnaryOps

Definition at line 952 of file Instruction.h.

Constructor & Destructor Documentation

~Instruction()

Instruction::~Instruction ( )

protected

Definition at line 46 of file Instruction.cpp.

References assert(), llvm::UndefValue::get(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), llvm::Value::getType(), llvm::ValueAsMetadata::handleRAUW(), llvm::Value::isUsedByMetadata(), and setMetadata().

Instruction() [1/2]

llvm::Instruction::Instruction ( const Instruction &  )

delete

Instruction() [2/2]

Instruction::Instruction ( Type *  Ty, unsigned  iType, Use *  Ops, unsigned  NumOps, InsertPosition  InsertBefore = nullptr  )

protected

Definition at line 35 of file Instruction.cpp.

References assert(), insertInto(), and llvm::InsertPosition::isValid().

Member Function Documentation

addAnnotationMetadata() [1/2]

void Instruction::addAnnotationMetadata

(

SmallVector< StringRef >

Annotations

)

Adds an !annotation metadata node with an array of Annotations as a tuple to this instruction.

If this instruction already has !annotation metadata, append the tuple to the existing node.

Definition at line 1665 of file Metadata.cpp.

References llvm::any_of(), llvm::MDBuilder::createString(), llvm::MDTuple::get(), llvm::Value::getContext(), getMetadata(), N, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and setMetadata().

addAnnotationMetadata() [2/2]

void Instruction::addAnnotationMetadata

(

StringRef

Annotation

)

Adds an !annotation metadata node with Annotation to this instruction.

If this instruction already has !annotation metadata, append Annotation to the existing node.

Definition at line 1695 of file Metadata.cpp.

References llvm::MDBuilder::createString(), llvm::MDTuple::get(), llvm::Value::getContext(), getMetadata(), N, Name, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and setMetadata().

adoptDbgRecords()

void Instruction::adoptDbgRecords	(	BasicBlock *	BB,
		InstListType::iterator	It,
		bool	InsertAtHead
	)

Transfer any DbgRecords on the position It onto this instruction, by simply adopting the sequence of DbgRecords (which is efficient) if possible, by merging two sequences otherwise.

Definition at line 266 of file Instruction.cpp.

References llvm::DbgMarker::absorbDebugValues(), DebugMarker, llvm::BasicBlock::deleteTrailingDbgRecords(), llvm::BasicBlock::end(), llvm::DbgMarker::eraseFromParent(), llvm::BasicBlock::getMarker(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), llvm::DbgMarker::MarkedInstr, and llvm::DbgMarker::StoredDbgRecords.

Referenced by insertBefore().

andIRFlags()

void Instruction::andIRFlags

(

const Value *

V

)

Logical 'and' of any supported wrapping, exact, and fast-math flags of V and this instruction.

Definition at line 659 of file Instruction.cpp.

References copyFastMathFlags(), FP, getFastMathFlags(), hasNonNeg(), hasNoSignedWrap(), hasNoUnsignedWrap(), isExact(), setHasNoSignedWrap(), setHasNoUnsignedWrap(), setIsExact(), and setNonNeg().

Referenced by llvm::InstCombinerImpl::foldPHIArgBinOpIntoPHI(), llvm::InstCombinerImpl::foldSelectOpOp(), foldShuffleOfUnaryOps(), NegateValue(), sinkLastInstruction(), and llvm::InstCombinerImpl::visitCallInst().

applyMergedLocation()

void Instruction::applyMergedLocation	(	DILocation *	LocA,
		DILocation *	LocB
	)

Merge 2 debug locations and apply it to the Instruction.

If the instruction is a CallIns, we need to traverse the inline chain to find the common scope. This is not efficient for N-way merging as each time you merge 2 iterations, you need to rebuild the hashmap to find the common scope. However, we still choose this API because: 1) Simplicity: it takes 2 locations instead of a list of locations. 2) In worst case, it increases the complexity from O(N*I) to O(2*N*I), where N is # of Instructions to merge, and I is the maximum level of inline stack. So it is still linear. 3) Merging of call instructions should be extremely rare in real applications, thus the N-way merging should be in code path. The DebugLoc attached to this instruction will be overwritten by the merged DebugLoc.

Definition at line 932 of file DebugInfo.cpp.

References llvm::DILocation::getMergedLocation(), and setDebugLoc().

Referenced by llvm::InstCombinerImpl::PHIArgMergedDebugLoc(), sinkLastInstruction(), and updateForIncomingValueLocation().

classof()

static bool llvm::Instruction::classof ( const Value *  V )

inlinestatic

Methods for support type inquiry through isa, cast, and dyn_cast:

Definition at line 938 of file Instruction.h.

clone()

Instruction * Instruction::clone

(

)

const

Create a copy of 'this' instruction that is identical in all ways except the following:

• The instruction has no parent
• The instruction has no name

Definition at line 1299 of file Instruction.cpp.

References getOpcode(), llvm_unreachable, and llvm::Value::SubclassOptionalData.

Referenced by buildPartialInvariantUnswitchConditionalBranch(), cloneInstructionsIntoPredecessorBlockAndUpdateSSAUses(), llvm::ehAwareSplitEdge(), llvm::SITargetLowering::emitExpandAtomicRMW(), expandToSwitch(), findOrCreatePHIInBlock(), llvm::FoldReturnIntoUncondBranch(), mergeCompatibleInvokesImpl(), replaceGEPIdxWithZero(), SinkCast(), SplitLandingPadPredecessorsImpl(), unswitchNontrivialInvariants(), unswitchTrivialBranch(), and versionCallSiteWithCond().

cloneDebugInfoFrom()

iterator_range< DbgRecord::self_iterator > Instruction::cloneDebugInfoFrom	(	const Instruction *	From,
		std::optional< simple_ilist< DbgRecord >::iterator >	FromHere = std::nullopt,
		bool	InsertAtHead = false
	)

Clone any debug-info attached to From onto this instruction.

Used to copy debugging information from one block to another, when copying entire blocks.

See also

DebugProgramInstruction.h , because the ordering of DbgRecords is still important, fine grain control of which instructions are moved and where they go is necessary. From The instruction to clone debug-info from. from_here Optional iterator to limit DbgRecords cloned to be a range from from_here to end(). InsertAtHead Whether the cloned DbgRecords should be placed at the end or the beginning of existing DbgRecords attached to this.

Returns

A range over the newly cloned DbgRecords.

Definition at line 233 of file Instruction.cpp.

References assert(), llvm::DbgMarker::cloneDebugInfoFrom(), DebugMarker, From, llvm::DbgMarker::getEmptyDbgRecordRange(), and llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent().

Referenced by llvm::CloneBasicBlock(), llvm::JumpThreadingPass::cloneInstructions(), cloneInstructionsIntoPredecessorBlockAndUpdateSSAUses(), llvm::JumpThreadingPass::duplicateCondBranchOnPHIIntoPred(), and performBranchToCommonDestFolding().

comesBefore()

bool Instruction::comesBefore

(

const Instruction *

Other

)

const

Given an instruction Other in the same basic block as this instruction, return true if this instruction comes before Other.

In this worst case, this takes linear time in the number of instructions in the block. The results are cached, so in common cases when the block remains unmodified, it takes constant time.

Definition at line 318 of file Instruction.cpp.

References assert(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), and llvm::Other.

Referenced by domTreeLevelBefore(), llvm::InstructionPrecedenceTracking::isPreceededBySpecialInstruction(), llvm::isValidAssumeForContext(), and llvm::BasicBlock::validateInstrOrdering().

copyFastMathFlags() [1/2]

void Instruction::copyFastMathFlags

(

const Instruction *

I

)

Copy I's fast-math flags.

Definition at line 615 of file Instruction.cpp.

References copyFastMathFlags(), and I.

copyFastMathFlags() [2/2]

void Instruction::copyFastMathFlags

(

FastMathFlags

FMF

)

Convenience function for transferring all fast-math flag values to this instruction, which must be an operator which supports these flags.

See LangRef.html for the meaning of these flags.

Definition at line 565 of file Instruction.cpp.

References assert().

Referenced by andIRFlags(), copyFastMathFlags(), copyIRFlags(), modifyIntrinsicCall(), llvm::InstCombinerImpl::visitCallInst(), llvm::InstCombinerImpl::visitFNeg(), and llvm::InstCombinerImpl::visitFPTrunc().

copyIRFlags()

void Instruction::copyIRFlags	(	const Value *	V,
		bool	IncludeWrapFlags = true
	)

Convenience method to copy supported exact, fast-math, and (optionally) wrapping flags from V to this instruction.

Definition at line 619 of file Instruction.cpp.

References copyFastMathFlags(), FP, setHasNoSignedWrap(), setHasNoUnsignedWrap(), setIsExact(), and setNonNeg().

Referenced by llvm::CmpInst::CmpInst(), llvm::BinaryOperator::CreateWithCopiedFlags(), llvm::CmpInst::CreateWithCopiedFlags(), llvm::UnaryOperator::CreateWithCopiedFlags(), llvm::InstCombinerImpl::foldPHIArgBinOpIntoPHI(), llvm::InstCombinerImpl::foldSelectIntoOp(), llvm::InstCombinerImpl::foldSelectOpOp(), foldSelectShuffleWith1Binop(), foldShuffleOfUnaryOps(), llvm::InstCombinerImpl::foldVariableSignZeroExtensionOfVariableHighBitExtract(), llvm::InstCombinerImpl::foldVectorBinop(), and llvm::InstCombinerImpl::visitCallInst().

copyMetadata()

void Instruction::copyMetadata	(	const Instruction &	SrcInst,
		ArrayRef< unsigned >	WL = ArrayRef<unsigned>()
	)

Copy metadata from SrcInst to this instruction.

WL, if not empty, specifies the list of meta data that needs to be copied. If WL is empty, all meta data will be copied.

Definition at line 1280 of file Instruction.cpp.

References llvm::ArrayRef< T >::begin(), llvm::ArrayRef< T >::empty(), llvm::ArrayRef< T >::end(), getAllMetadataOtherThanDebugLoc(), getDebugLoc(), hasMetadata(), setDebugLoc(), and setMetadata().

Referenced by llvm::breakLoopBackedge(), llvm::ConstantFoldTerminator(), llvm::SelectInst::Create(), llvm::createCallMatchingInvoke(), llvm::IRBuilderBase::CreateCondBr(), doPromotion(), instCombineSVELD1(), instCombineSVEST1(), llvm::SITargetLowering::lowerIdempotentRMWIntoFencedLoad(), modifyIntrinsicCall(), scalarizeMaskedLoad(), simplifyAMDGCNMemoryIntrinsicDemanded(), llvm::InstCombinerImpl::SimplifyAnyMemSet(), llvm::InstCombinerImpl::SimplifyAnyMemTransfer(), and llvm::InstCombinerImpl::visitSub().

dropDbgRecords()

void Instruction::dropDbgRecords

(

)

Erase any DbgRecords attached to this instruction.

Definition at line 309 of file Instruction.cpp.

References DebugMarker, and llvm::DbgMarker::dropDbgRecords().

Referenced by llvm::removeAllNonTerminatorAndEHPadInstructions(), and splitCallSite().

dropLocation()

void Instruction::dropLocation

(

)

Drop the instruction's debug location.

This does not guarantee removal of the !dbg source location attachment, as it must set a line 0 location with scope information attached on call instructions. To guarantee removal of the !dbg attachment, use the setDebugLoc() API. Note: it is undefined behavior to call this on an instruction not currently inserted into a function.

Definition at line 967 of file DebugInfo.cpp.

References DL, llvm::MDNode::get(), llvm::Value::getContext(), getDebugLoc(), getFunction(), llvm::Function::getSubprogram(), II, llvm::IntrinsicInst::mayLowerToFunctionCall(), and setDebugLoc().

Referenced by NegateValue(), unswitchNontrivialInvariants(), and updateLocationAfterHoist().

dropOneDbgRecord()

void Instruction::dropOneDbgRecord

(

DbgRecord *

I

)

Erase a single DbgRecord I that is attached to this instruction.

Definition at line 314 of file Instruction.cpp.

References DebugMarker, and llvm::DbgMarker::dropOneDbgRecord().

dropPoisonGeneratingAnnotations()

void llvm::Instruction::dropPoisonGeneratingAnnotations ( )

inline

Drops flags, return attributes and metadata that may generate poison.

Definition at line 526 of file Instruction.h.

Referenced by clearAssumptionsOfUsers().

dropPoisonGeneratingFlags()

void Instruction::dropPoisonGeneratingFlags

(

)

Drops flags that may cause this instruction to evaluate to poison despite having non-poison inputs.

Definition at line 410 of file Instruction.cpp.

References assert(), getOpcode(), hasPoisonGeneratingFlags(), llvm::GEPNoWrapFlags::none(), setHasNoInfs(), setHasNoNaNs(), and setNonNeg().

Referenced by foldSelectShuffleWith1Binop(), optimizeBranch(), llvm::patchReplacementInstruction(), and simplifyAssocCastAssoc().

dropPoisonGeneratingMetadata()

void Instruction::dropPoisonGeneratingMetadata

(

)

Drops metadata that may generate poison.

Definition at line 460 of file Instruction.cpp.

References llvm::Value::eraseMetadata().

dropPoisonGeneratingReturnAttributes()

void Instruction::dropPoisonGeneratingReturnAttributes

(

)

Drops return attributes that may generate poison.

Definition at line 476 of file Instruction.cpp.

References llvm::AttributeMask::addAttribute(), assert(), and hasPoisonGeneratingReturnAttributes().

dropUBImplyingAttrsAndMetadata()

void Instruction::dropUBImplyingAttrsAndMetadata

(

)

Drop any attributes or metadata that can cause immediate undefined behavior.

Retain other attributes/metadata on a best-effort basis. This should be used when speculating instructions.

Definition at line 506 of file Instruction.cpp.

References dropUBImplyingAttrsAndUnknownMetadata().

Referenced by cloneInstructionsIntoPredecessorBlockAndUpdateSSAUses(), and foldOperationIntoSelectOperand().

dropUBImplyingAttrsAndUnknownMetadata()

void Instruction::dropUBImplyingAttrsAndUnknownMetadata

(

ArrayRef< unsigned >

KnownIDs = {}

)

This function drops non-debug unknown metadata (through dropUnknownNonDebugMetadata).

For calls, it also drops parameter and return attributes that can cause undefined behaviour. Both of these should be done by passes which move instructions in IR.

Definition at line 487 of file Instruction.cpp.

References dropUnknownNonDebugMetadata(), and llvm::AttributeFuncs::getUBImplyingAttributes().

Referenced by dropUBImplyingAttrsAndMetadata().

dropUnknownNonDebugMetadata()

void Instruction::dropUnknownNonDebugMetadata

(

ArrayRef< unsigned >

KnownIDs = std::nullopt

)

Drop all unknown metadata except for debug locations.

Passes are required to drop metadata they don't understand. This is a convenience method for passes to do so. dropUBImplyingAttrsAndUnknownMetadata should be used instead of this API if the Instruction being modified is a call.

Definition at line 1596 of file Metadata.cpp.

References llvm::ArrayRef< T >::begin(), llvm::SmallSet< T, N, C >::count(), llvm::ArrayRef< T >::end(), llvm::Value::eraseMetadataIf(), llvm::Value::hasMetadata(), and llvm::SmallSet< T, N, C >::insert().

Referenced by dropUBImplyingAttrsAndUnknownMetadata(), generateReproducer(), and llvm::gvn::AvailableValue::MaterializeAdjustedValue().

eraseFromParent()

BasicBlock::iterator Instruction::eraseFromParent

(

)

This method unlinks 'this' from the containing basic block and deletes it.

Returns

an iterator pointing to the element after the erased one

Definition at line 92 of file Instruction.cpp.

References llvm::ilist_node_impl< ilist_detail::compute_node_options< T, Options... >::type >::getIterator(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), and handleMarkerRemoval().

Referenced by llvm::LanaiInstrInfo::analyzeBranch(), buildClonedLoopBlocks(), BuildSubAggregate(), llvm::changeToInvokeAndSplitBasicBlock(), llvm::CloneAndPruneIntoFromInst(), cloneLoopBlocks(), CloneLoopBlocks(), ConnectEpilog(), ConnectProlog(), llvm::ConstantFoldTerminator(), llvm::OpenMPIRBuilder::createAtomicCompare(), llvm::OpenMPIRBuilder::createCopyinClauseBlocks(), createMemMoveLoopKnownSize(), createMemMoveLoopUnknownSize(), createMemSetLoop(), llvm::OpenMPIRBuilder::createReductions(), llvm::OpenMPIRBuilder::createTargetInit(), llvm::OpenMPIRBuilder::createTask(), createTblForTrunc(), llvm::deleteDeadLoop(), despeculateCountZeros(), DoLowering(), doPromotion(), llvm::dropDebugUsers(), dropTypeTests(), llvm::JumpThreadingPass::duplicateCondBranchOnPHIIntoPred(), llvm::OpenMPIRBuilder::emitCancelationCheckImpl(), llvm::OpenMPIRBuilder::emitTargetTask(), llvm::objcarc::BundledRetainClaimRVs::eraseInst(), llvm::objcarc::EraseInstruction(), eraseTerminatorAndDCECond(), llvm::VPlan::execute(), llvm::expandAtomicRMWToCmpXchg(), llvm::expandDivision(), llvm::expandDivisionUpTo32Bits(), llvm::expandDivisionUpTo64Bits(), expandFPToI(), expandIntrinsic(), expandIToFP(), llvm::expandRemainder(), llvm::expandRemainderUpTo32Bits(), llvm::expandRemainderUpTo64Bits(), expandToSwitch(), llvm::RandomIRBuilder::findOrCreateSource(), findPHIToPartitionLoops(), foldMemChr(), llvm::FoldReturnIntoUncondBranch(), foldTwoEntryPHINode(), foldURemOfLoopIncrement(), generateUnsignedDivisionCode(), getStrlenWithNull(), llvm::SSAUpdater::GetValueInMiddleOfBlock(), hostParallelCallback(), injectPendingInvariantConditions(), llvm::InlineFunction(), insertBoundsCheck(), insertSpills(), insertUniqueBackedgeBlock(), llvm::lowerAtomicCmpXchgInst(), llvm::lowerAtomicRMWInst(), lowerAwaitSuspend(), lowerExpectIntrinsic(), LowerFenceInst(), llvm::SITargetLowering::lowerIdempotentRMWIntoFencedLoad(), llvm::IntrinsicLowering::LowerIntrinsicCall(), llvm::IntrinsicLowering::LowerToByteSwap(), llvm::MergeBasicBlockIntoOnlyPred(), llvm::MergeBlockIntoPredecessor(), mergeCleanupPad(), mergeConditionalStoreToAddress(), llvm::InstDeleterIRStrategy::mutate(), optimizeDivRem(), OptimizeEmptyGlobalAtExitDtors(), OptimizeExtractBits(), OptimizeGlobalAddressOfAllocation(), processAnd(), processAShr(), llvm::JumpThreadingPass::processBlock(), llvm::JumpThreadingPass::processBranchOnXOR(), processCmpIntrinsic(), processMinMaxIntrinsic(), processOverflowIntrinsic(), processSDiv(), processSelect(), processSExt(), processSIToFP(), processSRem(), promoteSingleBlockAlloca(), llvm::OutlinableRegion::reattachCandidate(), llvm::removeAllNonTerminatorAndEHPadInstructions(), llvm::LanaiInstrInfo::removeBranch(), llvm::PHINode::removeIncomingValue(), llvm::PHINode::removeIncomingValueIf(), removeIntrinsicUsers(), removeMarkerCall(), llvm::SCCPSolver::removeNonFeasibleEdges(), RemovePreallocated(), removeUndefIntroducingPredecessor(), llvm::removeUnwindEdge(), replaceCalledFunction(), replaceConditionalBranchesOnConstant(), replaceFrameSizeAndAlignment(), replaceOperation(), replacePrepare(), llvm::replaceSignedInst(), llvm::rewriteLoopExitValues(), rewritePHIs(), rewriteSingleStoreAlloca(), runImpl(), RunTermFold(), scalarize(), scalarizeMaskedCompressStore(), scalarizeMaskedExpandLoad(), scalarizeMaskedGather(), scalarizeMaskedLoad(), scalarizeMaskedScatter(), scalarizeMaskedStore(), scalarizeMaskedVectorHistogram(), simplifyOneLoop(), llvm::JumpThreadingPass::simplifyPartiallyRedundantLoad(), simplifySuspendPoint(), sinkAndCmp0Expression(), SinkCast(), speculatePHINodeLoads(), splitBeforeCatchSwitch(), llvm::SplitBlockAndInsertSimpleForLoop(), splitCallSite(), llvm::SplitIndirectBrCriticalEdges(), SplitLandingPadPredecessorsImpl(), llvm::splitLoopBound(), stripDebugDeclareImpl(), targetParallelCallback(), tryToMergeLandingPad(), TryToShrinkGlobalToBoolean(), llvm::TryToSimplifyUncondBranchFromEmptyBlock(), turnToExplicitForm(), llvm::UnrollAndJamLoop(), llvm::UnrollLoop(), llvm::UnrollRuntimeLoopRemainder(), unswitchNontrivialInvariants(), unswitchTrivialBranch(), unswitchTrivialSwitch(), llvm::UpgradeARCRuntime(), llvm::UpgradeIntrinsicCall(), versionCallSiteWithCond(), llvm::LoopVersioning::versionLoop(), llvm::ObjectSizeOffsetEvaluator::visitPHINode(), and workshareLoopTargetCallback().

eraseMetadataIf()

void Instruction::eraseMetadataIf

(

function_ref< bool(unsigned, MDNode *)>

Pred

)

Erase all metadata that matches the predicate.

Definition at line 1589 of file Metadata.cpp.

References llvm::Value::eraseMetadataIf(), and llvm::DebugLoc::getAsMDNode().

extractProfTotalWeight()

bool Instruction::extractProfTotalWeight

(

uint64_t &

TotalVal

)

const

Retrieve total raw weight values of a branch.

Returns true on success with profile total weights filled in. Returns false if no metadata was found.

Definition at line 1751 of file Metadata.cpp.

References assert(), and getOpcode().

Referenced by llvm::createCallMatchingInvoke().

getAAMetadata()

AAMDNodes Instruction::getAAMetadata

(

)

const

Returns the AA metadata for this instruction.

Definition at line 1713 of file Metadata.cpp.

References llvm::Value::getContext(), llvm::Value::hasMetadata(), Info, llvm::LLVMContext::pImpl, and llvm::LLVMContextImpl::ValueMetadata.

Referenced by foldLoadsRecursive(), llvm::MemoryLocation::get(), llvm::MemoryLocation::getForDest(), mergeConditionalStoreToAddress(), llvm::InstCombinerImpl::mergeStoreIntoSuccessor(), llvm::promoteLoopAccessesToScalars(), llvm::JumpThreadingPass::simplifyPartiallyRedundantLoad(), speculatePHINodeLoads(), speculateSelectInstLoads(), and unpackLoadToAggregate().

getAccessType()

Type * Instruction::getAccessType

(

)

const

Return the type this instruction accesses in memory, if any.

Definition at line 1038 of file Instruction.cpp.

References getOpcode(), llvm::Value::getType(), and II.

Referenced by getAccessType().

getAllMetadata()

void llvm::Instruction::getAllMetadata ( SmallVectorImpl< std::pair< unsigned, MDNode * > > &  MDs ) const

inline

Get all metadata attached to this Instruction.

The first element of each pair returned is the KindID, the second element is the metadata value. This list is returned sorted by the KindID.

Definition at line 399 of file Instruction.h.

getAllMetadataOtherThanDebugLoc()

void llvm::Instruction::getAllMetadataOtherThanDebugLoc ( SmallVectorImpl< std::pair< unsigned, MDNode * > > &  MDs ) const

inline

This does the same thing as getAllMetadata, except that it filters out the debug location.

Definition at line 406 of file Instruction.h.

Referenced by copyMetadata(), and llvm::propagateMetadata().

getDataLayout()

const DataLayout & Instruction::getDataLayout

(

)

const

Get the data layout of the module this instruction belongs to.

Requires the instruction to have a parent module.

Definition at line 74 of file Instruction.cpp.

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

Referenced by AddAlignmentAssumptions(), llvm::addDiffRuntimeChecks(), llvm::addRuntimeChecks(), collectFrameAlloca(), llvm::JumpThreadingPass::computeValueKnownInPredecessorsImpl(), llvm::LoongArchTargetLowering::emitMaskedAtomicRMWIntrinsic(), llvm::RISCVTargetLowering::emitMaskedAtomicRMWIntrinsic(), llvm::expandAtomicRMWToCmpXchg(), foldSelectICmpAnd(), llvm::MemoryLocation::get(), llvm::memtag::getAllocaSizeInBytes(), llvm::getAllocSize(), getAtomicOpSize(), llvm::DemandedBits::getDemandedBits(), getGEPInductionOperand(), llvm::isDereferenceableAndAlignedInLoop(), llvm::GCNTTIImpl::isInlineAsmSourceOfDivergence(), isLoadInvariantInLoop(), isSafePHIToSpeculate(), llvm::isSafeToSpeculativelyExecuteWithOpcode(), lookThroughCast(), llvm::RISCVTargetLowering::lowerDeinterleaveIntrinsicToLoad(), llvm::AArch64TargetLowering::lowerInterleavedLoad(), llvm::ARMTargetLowering::lowerInterleavedLoad(), llvm::RISCVTargetLowering::lowerInterleavedLoad(), NegateValue(), shortenAssignment(), llvm::JumpThreadingPass::simplifyPartiallyRedundantLoad(), llvm::simplifyRetainedKnowledge(), llvm::SplitBlockAndInsertSimpleForLoop(), trackInlinedStores(), valueCoversEntireFragment(), and visitIVCast().

getDbgRecordRange()

iterator_range< simple_ilist< DbgRecord >::iterator > llvm::Instruction::getDbgRecordRange ( ) const

inline

Return a range over the DbgRecords attached to this instruction.

Definition at line 104 of file Instruction.h.

References llvm::getDbgRecordRange().

Referenced by getNextNode(), hasDbgRecords(), performBranchToCommonDestFolding(), llvm::remapDebugVariable(), and llvm::memtag::StackInfoBuilder::visit().

getDbgReinsertionPosition()

std::optional< DbgRecord::self_iterator > Instruction::getDbgReinsertionPosition

(

)

Return an iterator to the position of the "Next" DbgRecord after this instruction, or std::nullopt.

This is the position to pass to BasicBlock::reinsertInstInDbgRecords when re-inserting an instruction.

Definition at line 251 of file Instruction.cpp.

References llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), and llvm::DbgMarker::StoredDbgRecords.

getDebugLoc()

const DebugLoc & llvm::Instruction::getDebugLoc ( ) const

inline

Return the debug location for this node as a DebugLoc.

Definition at line 466 of file Instruction.h.

Referenced by BreakUpSubtract(), buildClonedLoopBlocks(), llvm::changeToInvokeAndSplitBasicBlock(), checkIfSupported(), cloneInstructionsIntoPredecessorBlockAndUpdateSSAUses(), computeCallStackHash(), ConvertShiftToMul(), copyMetadata(), llvm::CallBrInst::Create(), llvm::CallInst::Create(), llvm::VPRecipeBuilder::createEdgeMask(), llvm::InnerLoopVectorizer::createInductionResumeValue(), llvm::OpenMPIRBuilder::createTask(), despeculateCountZeros(), diagnoseInvalidFormatString(), dropLocation(), llvm::OpenMPIRBuilder::emitTargetTask(), llvm::VPWidenIntOrFpInductionRecipe::execute(), llvm::extractProbe(), llvm::extractProbeFromDiscriminator(), fixupDebugInfoPostExtraction(), fixupLineNumbers(), foldCondBranchOnValueKnownInPredecessorImpl(), llvm::InstCombinerImpl::foldOpIntoPhi(), llvm::ReplayInlineAdvisor::getAdviceImpl(), getAggregate(), getAggregateVariable(), llvm::SampleContextTracker::getCalleeContextSamplesFor(), llvm::SelectionDAGBuilder::getCurDebugLoc(), llvm::getDebugValueLoc(), getOrCreateDebugLoc(), getStableDebugLoc(), HandleByValArgumentInit(), llvm::hoistAllInstructionsInto(), llvm::InlineFunction(), insertNewDbgInst(), llvm::AMDGPU::instrumentAddressImpl(), LowerNegateToMultiply(), llvm::InstCombinerImpl::mergeStoreIntoSuccessor(), operandWithNewAddressSpaceOrCreatePoison(), optimizeDivRem(), OptimizeExtractBits(), llvm::InstCombinerImpl::PHIArgMergedDebugLoc(), processAShr(), llvm::JumpThreadingPass::processBlock(), processSDiv(), processSExt(), processSIToFP(), processSRem(), llvm::SampleContextTracker::promoteMergeContextSamplesTree(), llvm::SCCPSolver::removeNonFeasibleEdges(), llvm::removeUnwindEdge(), replaceConditionalBranchesOnConstant(), llvm::replaceSignedInst(), llvm::IRTranslator::runOnMachineFunction(), llvm::coro::salvageDebugInfo(), scalarizeMaskedCompressStore(), scalarizeMaskedExpandLoad(), scalarizeMaskedGather(), scalarizeMaskedLoad(), scalarizeMaskedScatter(), scalarizeMaskedStore(), scalarizeMaskedVectorHistogram(), llvm::FastISel::selectOperator(), llvm::setProbeDistributionFactor(), llvm::JumpThreadingPass::simplifyPartiallyRedundantLoad(), sinkAndCmp0Expression(), sinkLastInstruction(), SinkShiftAndTruncate(), SplitBlockPredecessorsImpl(), splitCallSite(), llvm::SplitKnownCriticalEdge(), SplitLandingPadPredecessorsImpl(), llvm::JumpThreadingPass::threadEdge(), TryToShrinkGlobalToBoolean(), llvm::JumpThreadingPass::unfoldSelectInstr(), unswitchNontrivialInvariants(), unswitchTrivialBranch(), unswitchTrivialSwitch(), updateForIncomingValueLocation(), and upgradeDbgIntrinsicToDbgRecord().

getFastMathFlags()

FastMathFlags Instruction::getFastMathFlags

(

)

const

Convenience function for getting all the fast-math flags, which must be an operator which supports these flags.

See LangRef.html for the meaning of these flags.

Definition at line 610 of file Instruction.cpp.

References assert().

Referenced by llvm::RecurrenceDescriptor::AddReductionVar(), andIRFlags(), llvm::IRBuilderBase::CreateConstrainedFPBinOp(), llvm::IRBuilderBase::CreateConstrainedFPCast(), llvm::IRBuilderBase::CreateConstrainedFPUnroundedBinOp(), llvm::IRBuilderBase::CreateFAddFMF(), llvm::IRBuilderBase::CreateFDivFMF(), llvm::IRBuilderBase::CreateFMulFMF(), llvm::IRBuilderBase::CreateFNegFMF(), llvm::IRBuilderBase::CreateFRemFMF(), llvm::IRBuilderBase::CreateFSubFMF(), llvm::InstCombinerImpl::foldFMulReassoc(), foldFNegIntoConstant(), llvm::InstCombinerImpl::foldSelectOpOp(), foldTwoEntryPHINode(), getISDForVPIntrinsic(), llvm::matchDecomposedSelectPattern(), llvm::InstModificationIRStrategy::mutate(), optimizeDoubleFP(), optimizeSymmetricCall(), llvm::VPReductionRecipe::print(), llvm::VPReductionEVLRecipe::print(), and llvm::InstCombinerImpl::SimplifyAssociativeOrCommutative().

getFunction() [1/2]

Function * llvm::Instruction::getFunction ( )

inline

Definition at line 188 of file Instruction.h.

References getFunction().

getFunction() [2/2]

const Function * Instruction::getFunction

(

)

const

Return the function this instruction belongs to.

Note: it is undefined behavior to call this on an instruction not currently inserted into a function.

Definition at line 70 of file Instruction.cpp.

References llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent().

Referenced by analyzeLoopUnrollCost(), atomicIgnoresDenormalModeOrFPModeIsFTZ(), canSimplifyNullLoadOrGEP(), canTransformToMemCmp(), dropLocation(), llvm::expandAtomicRMWToCmpXchg(), llvm::AArch64TargetLowering::fallBackToDAGISel(), findCallsAtConstantOffset(), fixupDebugInfoPostExtraction(), forwardStoredOnceStore(), llvm::InstCombinerImpl::freezeOtherUses(), llvm::ReplayInlineAdvisor::getAdviceImpl(), llvm::coro::Shape::getRetconResultTypes(), HandleByValArgument(), llvm::InlineFunction(), insertLifetimeMarkersSurroundingCall(), insertSpills(), llvm::InstrumentationIRBuilder::InstrumentationIRBuilder(), isAtomicRMWLegalXChgTy(), isKnownNonZeroFromAssume(), isKnownToBeAPowerOfTwo(), IsOperandAMemoryOperand(), llvm::AA::isPotentiallyReachable(), isPotentiallyReachable(), llvm::AA::isValidAtPosition(), llvm::lowerAtomicRMWInst(), llvm::lowerObjectSizeCall(), mergeDIAssignID(), llvm::LoopInfo::movementPreservesLCSSAForm(), NegateValue(), optimizeDoubleFP(), llvm::AlignmentFromAssumptionsPass::processAssumption(), promoteArguments(), removeTailCallAttribute(), llvm::coro::salvageDebugInfo(), llvm::SITargetLowering::shouldExpandAtomicRMWInIR(), simplifyFCmpInst(), simplifyInstructionWithOperands(), llvm::OutlinableRegion::splitCandidate(), suppressSpeculativeLoadForSanitizers(), tryToOptimizeStoreOfAllocationToGlobal(), llvm::InstCombinerImpl::visitCallInst(), llvm::InstCombinerImpl::visitReturnInst(), llvm::InstCombinerImpl::visitSExt(), llvm::InstCombinerImpl::visitTrunc(), and llvm::InstCombinerImpl::visitZExt().

getInsertionPointAfterDef()

std::optional< BasicBlock::iterator > Instruction::getInsertionPointAfterDef

(

)

Get the first insertion point at which the result of this instruction is defined.

This is not the directly following instruction in a number of cases, e.g. phi nodes or terminators that return values. This function may return null if the insertion after the definition is not possible, e.g. due to a catchswitch terminator.

Definition at line 328 of file Instruction.cpp.

References assert(), llvm::BasicBlock::end(), llvm::BasicBlock::getFirstInsertionPt(), llvm::ilist_node_impl< ilist_detail::compute_node_options< T, Options... >::type >::getIterator(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), llvm::BasicBlock::getParent(), llvm::Value::getType(), II, and isTerminator().

getMetadata() [1/2]

MDNode * llvm::Instruction::getMetadata ( StringRef  Kind ) const

inline

Get the metadata of given kind attached to this Instruction.

If the metadata is not found then return null.

Definition at line 390 of file Instruction.h.

getMetadata() [2/2]

MDNode * llvm::Instruction::getMetadata ( unsigned  KindID ) const

inline

Get the metadata of given kind attached to this Instruction.

If the metadata is not found then return null.

Definition at line 381 of file Instruction.h.

References llvm::DebugLoc::getAsMDNode().

Referenced by AddAliasScopeMetadata(), addAnnotationMetadata(), addBasicBlockMetadata(), llvm::LoopVersioning::annotateInstWithNoAlias(), llvm::changeToInvokeAndSplitBasicBlock(), llvm::combineMetadata(), convertMetadataToAssumes(), llvm::DbgVariableRecord::createLinkedDVRAssign(), llvm::IRBuilderBase::CreateSelect(), llvm::diagnoseDontCall(), emitDbgAssign(), llvm::InstCombinerImpl::foldPHIArgLoadIntoPHI(), foldTwoEntryPHINode(), llvm::at::getAssignmentMarkers(), getBranchWeights(), llvm::at::getDVRAssignmentMarkers(), getFromRangeMetadata(), llvm::BasicBlock::getIrrLoopHeaderWeight(), llvm::Loop::getLoopID(), llvm::MDNode::getMergedProfMetadata(), llvm::ScopedNoAliasAAResult::getModRefInfo(), llvm::TypeBasedAAResult::getModRefInfo(), hasOnlyUniformBranches(), llvm::DIBuilder::insertDbgAssign(), insertUniqueBackedgeBlock(), llvm::intersectAccessGroups(), isProfitableToSpeculate(), llvm::CallLowering::lowerCall(), llvm::FastISel::lowerCallTo(), llvm::makeGuardControlFlowExplicit(), llvm::mayHaveValueProfileOfKind(), mergeDIAssignID(), migrateDebugInfo(), llvm::LoopStructure::parseLoopStructure(), performBranchToCommonDestFolding(), PropagateCallSiteMetadata(), propagateMemProfHelper(), propagateMemProfMetadata(), llvm::propagateMetadata(), shouldFoldCondBranchesToCommonDestination(), SimplifyCondBranchToCondBranch(), SplitBlockPredecessorsImpl(), turnGuardIntoBranch(), and unswitchNontrivialInvariants().

getModule() [1/2]

Module * llvm::Instruction::getModule ( )

inline

Definition at line 178 of file Instruction.h.

getModule() [2/2]

const Module * Instruction::getModule

(

)

const

Return the module owning the function this instruction belongs to or nullptr it the function does not have a module.

Note: this is undefined behavior if the instruction does not have a parent, or the parent basic block does not have a parent function.

Definition at line 66 of file Instruction.cpp.

References llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent().

Referenced by addAssumeNonNull(), addMappingsFromTLI(), addVariantDeclaration(), llvm::buildAssumeFromKnowledge(), cloneInstructionsIntoPredecessorBlockAndUpdateSSAUses(), createCoroSave(), CreateGCRelocates(), createTblForTrunc(), llvm::LoongArchTargetLowering::emitMaskedAtomicCmpXchgIntrinsic(), llvm::RISCVTargetLowering::emitMaskedAtomicCmpXchgIntrinsic(), llvm::LoongArchTargetLowering::emitMaskedAtomicRMWIntrinsic(), llvm::RISCVTargetLowering::emitMaskedAtomicRMWIntrinsic(), llvm::AMDGPULibCalls::fold(), foldShuffleOfUnaryOps(), llvm::InstCombinerImpl::foldVectorBinop(), llvm::SCEVExpander::generateOverflowCheck(), getDataLayout(), llvm::LazyValueInfo::getPredicateAt(), llvm::InstrProfIncrementInst::getStep(), llvm::VFABI::getVectorVariantNames(), inlineRetainOrClaimRVCalls(), llvm::DIBuilder::insertDbgAssign(), insertSpills(), llvm::TargetLibraryInfoImpl::isCallingConvCCompatible(), llvm::AArch64TargetLowering::lowerDeinterleaveIntrinsicToLoad(), llvm::RISCVTargetLowering::lowerDeinterleaveIntrinsicToLoad(), lowerFunnelShifts(), llvm::AArch64TargetLowering::lowerInterleavedLoad(), llvm::ARMTargetLowering::lowerInterleavedLoad(), llvm::RISCVTargetLowering::lowerInterleavedLoad(), llvm::IntrinsicLowering::LowerToByteSwap(), lowerUMulWithOverflow(), migrateDebugInfo(), modifyIntrinsicCall(), llvm::LibCallSimplifier::optimizeCall(), optimizeDoubleFP(), promoteSingleBlockAlloca(), ReplaceCallWith(), rewriteSingleStoreAlloca(), llvm::LoopVectorizationCostModel::setVectorizedCallDecision(), llvm::VFABI::setVectorVariantNames(), llvm::simplifyRetainedKnowledge(), tryToReplaceWithGEPBuiltin(), upgradeAbs(), upgradeAVX512MaskToSelect(), llvm::UpgradeIntrinsicCall(), upgradeX86BinaryIntrinsics(), upgradeX86ConcatShift(), upgradeX86IntrinsicCall(), upgradeX86MaskedShift(), upgradeX86Rotate(), upgradeX86VPERMT2Intrinsics(), llvm::AMDGPULibCalls::useNative(), llvm::InstCombinerImpl::visitBitCast(), llvm::InstCombinerImpl::visitCallInst(), and llvm::InstCombinerImpl::visitFPTrunc().

getNextNonDebugInstruction() [1/2]

Instruction * llvm::Instruction::getNextNonDebugInstruction ( bool  SkipPseudoOp = false )

inline

Definition at line 852 of file Instruction.h.

getNextNonDebugInstruction() [2/2]

const Instruction * Instruction::getNextNonDebugInstruction

(

bool

SkipPseudoOp = false

)

const

Return a pointer to the next non-debug instruction in the same basic block as 'this', or nullptr if no such instruction exists.

Skip any pseudo operations if SkipPseudoOp is true.

Definition at line 1164 of file Instruction.cpp.

References llvm::ilist_node_with_parent< Instruction, BasicBlock, ilist_iterator_bits< true >, ilist_parent< BasicBlock > >::getNextNode(), and I.

Referenced by findStoresToUninstrumentedArgAllocas(), getStableDebugLoc(), isPotentiallyReachable(), RemovePreallocated(), rewriteDebugUsers(), llvm::OutlinableRegion::splitCandidate(), llvm::InstCombinerImpl::visitCallInst(), and llvm::InstCombinerImpl::visitFenceInst().

getNumSuccessors()

unsigned Instruction::getNumSuccessors

(

)

const

Return the number of successors that this instruction has.

The instruction must be a terminator.

Definition at line 1210 of file Instruction.cpp.

References getOpcode(), and llvm_unreachable.

Referenced by llvm::BranchProbabilityInfo::calculate(), llvm::FunctionComparator::compare(), llvm::deleteDeadLoop(), getBestDestForJumpOnUndef(), getBranchHint(), llvm::DOTGraphTraits< DOTFuncInfo * >::getEdgeAttributes(), getInstrBB(), llvm::MustBeExecutedContextExplorer::getMustBeExecutedNextInstruction(), llvm::RegionTraits< Function >::getNumSuccessors(), llvm::isCriticalEdge(), llvm::SparseSolver< LatticeKey, LatticeVal, KeyInfo >::isEdgeFeasible(), isSafePHIToSpeculate(), llvm::JumpThreadingPass::maybeMergeBasicBlockIntoOnlyPred(), llvm::JumpThreadingPass::processBlock(), llvm::JumpThreadingPass::processThreadableEdges(), replaceConstantExprOp(), replaceSuccessorWith(), llvm::JumpThreadingPass::simplifyPartiallyRedundantLoad(), skipPGOUse(), llvm::SplitAllCriticalEdges(), llvm::SplitCriticalEdge(), llvm::SplitEdge(), llvm::SplitKnownCriticalEdge(), llvm::JumpThreadingPass::threadEdge(), llvm::JumpThreadingPass::threadThroughTwoBasicBlocks(), and llvm::JumpThreadingPass::tryToUnfoldSelectInCurrBB().

getOpcode()

unsigned llvm::Instruction::getOpcode ( ) const

inline

Returns a member of one of the enums like Instruction::Add.

Definition at line 274 of file Instruction.h.

Referenced by llvm::LanaiInstrInfo::analyzeBranch(), canEvaluateShiftedShift(), canPHITrans(), llvm::SCEVExpander::canReuseFlagsFromOriginalIVInc(), checkIfSafeAddSequence(), clone(), llvm::InstCombinerImpl::convertOrOfShiftsToFunnelShift(), llvm::CallBase::Create(), detectPopcountIdiom(), detectShiftUntilLessThanIdiom(), detectShiftUntilZeroIdiom(), doesInTreeUserNeedToExtract(), dropPoisonGeneratingFlags(), expandFPToI(), expandIToFP(), extractProfTotalWeight(), llvm::RISCVTargetLowering::fallBackToDAGISel(), findDemandedEltsBySingleUser(), findIBRPredecessor(), foldFPtoI(), llvm::InstCombinerImpl::foldICmpInstWithConstantNotInt(), llvm::InstCombinerImpl::foldICmpUsingBoolRange(), llvm::InstCombinerImpl::foldMultiplicationOverflowCheck(), llvm::InstCombinerImpl::foldPHIArgBinOpIntoPHI(), llvm::InstCombinerImpl::foldSelectOpOp(), foldShiftIntoShiftInAnotherHandOfAndInICmp(), foldSignedTruncationCheck(), llvm::InstCombinerImpl::foldVariableSignZeroExtensionOfVariableHighBitExtract(), getAccessType(), getExtractIndex(), getFromRangeMetadata(), getHashValueImpl(), llvm::SCEVExpander::getIVIncOperand(), getLoopPhiForCounter(), llvm::CallBase::getNumSubclassExtraOperands(), llvm::CallBase::getNumSubclassExtraOperandsDynamic(), getNumSuccessors(), llvm::UnaryOperator::getOpcode(), llvm::BinaryOperator::getOpcode(), llvm::CastInst::getOpcode(), llvm::CmpInst::getOpcode(), llvm::SelectInst::getOpcode(), llvm::VPReplicateRecipe::getOpcode(), llvm::MemoryLocation::getOrNone(), llvm::LoopVectorizationCostModel::getReductionPatternCost(), getSuccessor(), hasAtomicLoad(), hasAtomicStore(), hashCallInst(), hasSameSpecialState(), llvm::InlineFunction(), isAlternateInstruction(), isAssociative(), isAtomic(), isCommutative(), isEqualImpl(), llvm::AArch64TTIImpl::isExtPartOfAvgExpr(), llvm::SystemZTTIImpl::isFoldableLoad(), isHighCostExpansion(), isIdenticalToWhenDefined(), isMatchingStore(), isPromotedInstructionLegal(), isReturnNonNull(), llvm::isSafeToSpeculativelyExecute(), llvm::isSafeToSpeculativelyExecuteWithOpcode(), isSameOperationAs(), isVolatile(), matchExpandedRem(), mayReadFromMemory(), mayThrow(), mayWriteToMemory(), llvm::InstModificationIRStrategy::mutate(), needsFP(), NegateValue(), performBlockTailMerging(), llvm::BasicTTIImplBase< T >::preferToKeepConstantsAttached(), llvm::JumpThreadingPass::processBlock(), promoteAllocaUserToVector(), llvm::InstCombinerImpl::reassociateShiftAmtsOfTwoSameDirectionShifts(), llvm::refineInstruction(), llvm::LanaiInstrInfo::removeBranch(), llvm::replaceSignedInst(), setSuccessor(), llvm::AArch64TargetLowering::shouldSinkOperands(), llvm::ARMTargetLowering::shouldSinkOperands(), llvm::InstCombinerImpl::simplifyShrShlDemandedBits(), SinkShiftAndTruncate(), llvm::InstCombinerImpl::SliceUpIllegalIntegerPHI(), llvm::VPRecipeBuilder::tryToCreateWidenRecipe(), llvm::InstCombinerImpl::visitCallInst(), llvm::InstCombinerImpl::visitFCmpInst(), and llvm::InstCombinerImpl::visitICmpInst().

getOpcodeName() [1/2]

const char * llvm::Instruction::getOpcodeName ( ) const

inline

Definition at line 276 of file Instruction.h.

References getOpcode(), and getOpcodeName().

Referenced by checkInstructions(), llvm::LoopVectorizationPlanner::emitInvalidCostRemarks(), llvm::VPWidenRecipe::execute(), llvm::ConstantExpr::getOpcodeName(), getOpcodeName(), llvm::VPInstruction::print(), llvm::VPWidenRecipe::print(), llvm::VPWidenCastRecipe::print(), llvm::VPScalarCastRecipe::print(), llvm::VPReductionRecipe::print(), llvm::VPReductionEVLRecipe::print(), llvm::VPReplicateRecipe::print(), and PrintOps().

getOpcodeName() [2/2]

const char * Instruction::getOpcodeName ( unsigned  Opcode )

static

Definition at line 700 of file Instruction.cpp.

References llvm::Add, llvm::And, llvm::FAdd, llvm::FMul, llvm::Mul, llvm::Or, PHI, Select, and llvm::Xor.

getPrevNonDebugInstruction() [1/2]

Instruction * llvm::Instruction::getPrevNonDebugInstruction ( bool  SkipPseudoOp = false )

inline

Definition at line 863 of file Instruction.h.

getPrevNonDebugInstruction() [2/2]

const Instruction * Instruction::getPrevNonDebugInstruction

(

bool

SkipPseudoOp = false

)

const

Return a pointer to the previous non-debug instruction in the same basic block as 'this', or nullptr if no such instruction exists.

Skip any pseudo operations if SkipPseudoOp is true.

Definition at line 1172 of file Instruction.cpp.

References llvm::ilist_node_with_parent< Instruction, BasicBlock, ilist_iterator_bits< true >, ilist_parent< BasicBlock > >::getPrevNode(), and I.

Referenced by findDominatingValue(), InsertStackProtectors(), and llvm::InstCombinerImpl::visitFenceInst().

getStableDebugLoc()

const DebugLoc & Instruction::getStableDebugLoc

(

)

const

Fetch the debug location for this node, unless this is a debug intrinsic, in which case fetch the debug location of the next non-debug node.

Definition at line 1179 of file Instruction.cpp.

References getDebugLoc(), and getNextNonDebugInstruction().

getSubclassData()

template<typename BitfieldElement >

BitfieldElement::Type llvm::Instruction::getSubclassData ( ) const

inlineprotected

Definition at line 1014 of file Instruction.h.

getSuccessor()

BasicBlock * Instruction::getSuccessor

(

unsigned

Idx

)

const

Return the specified successor. This instruction must be a terminator.

Definition at line 1222 of file Instruction.cpp.

References getOpcode(), and llvm_unreachable.

Referenced by llvm::FunctionComparator::compare(), llvm::OpenMPIRBuilder::createSection(), findLoopComponents(), getBestDestForJumpOnUndef(), getBranchHint(), llvm::DOTGraphTraits< DOTFuncInfo * >::getEdgeAttributes(), llvm::MustBeExecutedContextExplorer::getMustBeExecutedNextInstruction(), getOnlyLiveSuccessor(), llvm::isCriticalEdge(), llvm::SparseSolver< LatticeKey, LatticeVal, KeyInfo >::isEdgeFeasible(), llvm::InstCombinerImpl::mergeStoreIntoSuccessor(), optimizeSQRT(), llvm::JumpThreadingPass::processBlock(), replaceSuccessorWith(), scalarizeMaskedCompressStore(), scalarizeMaskedExpandLoad(), scalarizeMaskedGather(), scalarizeMaskedLoad(), scalarizeMaskedScatter(), scalarizeMaskedStore(), scalarizeMaskedVectorHistogram(), llvm::SplitCriticalEdge(), llvm::SplitKnownCriticalEdge(), llvm::JumpThreadingPass::threadEdge(), llvm::JumpThreadingPass::threadThroughTwoBasicBlocks(), and llvm::UnrollAndJamLoop().

handleMarkerRemoval()

void Instruction::handleMarkerRemoval

(

)

Handle the debug-info implications of this instruction being removed.

Any attached DbgRecords need to "fall" down onto the next instruction.

Definition at line 85 of file Instruction.cpp.

References DebugMarker, llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), and llvm::DbgMarker::removeMarker().

Referenced by eraseFromParent(), and removeFromParent().

hasAllowContract()

bool Instruction::hasAllowContract

(

)

const

Determine whether the allow-contract flag is set.

Definition at line 600 of file Instruction.cpp.

References assert().

Referenced by llvm::GCNTTIImpl::getArithmeticInstrCost(), and llvm::InstModificationIRStrategy::mutate().

hasAllowReassoc()

bool Instruction::hasAllowReassoc

(

)

const

Determine whether the allow-reassociation flag is set.

Definition at line 575 of file Instruction.cpp.

References assert().

Referenced by llvm::InductionDescriptor::getExactFPMathInst(), and llvm::InstModificationIRStrategy::mutate().

hasAllowReciprocal()

bool Instruction::hasAllowReciprocal

(

)

const

Determine whether the allow-reciprocal flag is set.

Definition at line 595 of file Instruction.cpp.

References assert().

Referenced by llvm::InstModificationIRStrategy::mutate().

hasApproxFunc()

bool Instruction::hasApproxFunc

(

)

const

Determine whether the approximate-math-functions flag is set.

Definition at line 605 of file Instruction.cpp.

References assert().

Referenced by llvm::GCNTTIImpl::getArithmeticInstrCost(), and llvm::InstModificationIRStrategy::mutate().

hasAtomicLoad()

bool Instruction::hasAtomicLoad

(

)

const

Return true if this atomic instruction loads from memory.

Definition at line 984 of file Instruction.cpp.

References assert(), getOpcode(), and isAtomic().

Referenced by llvm::PPCTargetLowering::emitTrailingFence().

hasAtomicStore()

bool Instruction::hasAtomicStore

(

)

const

Return true if this atomic instruction stores to memory.

Definition at line 996 of file Instruction.cpp.

References assert(), getOpcode(), and isAtomic().

Referenced by llvm::TargetLoweringBase::emitLeadingFence(), llvm::ARMTargetLowering::emitLeadingFence(), and llvm::VETargetLowering::emitLeadingFence().

hasDbgRecords()

bool Instruction::hasDbgRecords

(

)

const

Returns true if any DbgRecords are attached to this instruction.

Definition at line 264 of file Instruction.cpp.

References getDbgRecordRange().

Referenced by getNextNode().

hasMetadata() [1/3]

bool llvm::Instruction::hasMetadata ( ) const

inline

Return true if this instruction has any metadata attached to it.

Definition at line 363 of file Instruction.h.

Referenced by atomicIgnoresDenormalModeOrFPModeIsFTZ(), collectFrameAlloca(), convertMetadataToAssumes(), copyMetadata(), doPromotion(), llvm::MemoryDependenceResults::getInvariantGroupPointerDependency(), llvm::TargetLoweringBase::getLoadMemOperandFlags(), llvm::SITargetLowering::getTgtMemIntrinsic(), globalMemoryFPAtomicIsLegal(), hasPoisonGeneratingMetadata(), insertNewDbgInst(), IsAcceptableTarget(), llvm::gvn::AvailableValue::MaterializeAdjustedValue(), setMetadata(), and updateMemprofMetadata().

hasMetadata() [2/3]

bool llvm::Instruction::hasMetadata ( StringRef  Kind ) const

inline

Return true if this instruction has the given type of metadata attached.

Definition at line 375 of file Instruction.h.

hasMetadata() [3/3]

bool llvm::Instruction::hasMetadata ( unsigned  KindID ) const

inline

Return true if this instruction has the given type of metadata attached.

Definition at line 370 of file Instruction.h.

hasMetadataOtherThanDebugLoc()

bool llvm::Instruction::hasMetadataOtherThanDebugLoc ( ) const

inline

Return true if this instruction has metadata attached to it other than a debug location.

Definition at line 367 of file Instruction.h.

hasNoInfs()

bool Instruction::hasNoInfs

(

)

const

Determine whether the no-infs flag is set.

Definition at line 585 of file Instruction.cpp.

References assert().

Referenced by foldFCmpFSubIntoFCmp(), foldFCmpReciprocalAndZero(), and llvm::InstModificationIRStrategy::mutate().

hasNoNaNs()

bool Instruction::hasNoNaNs

(

)

const

Determine whether the no-NaNs flag is set.

Definition at line 580 of file Instruction.cpp.

References assert().

Referenced by foldFCmpFSubIntoFCmp(), and llvm::InstModificationIRStrategy::mutate().

hasNonNeg()

bool Instruction::hasNonNeg

(

)

const

Determine whether the the nneg flag is set.

Definition at line 401 of file Instruction.cpp.

References assert(), llvm::PossiblyNonNegInst::NonNeg, and llvm::Value::SubclassOptionalData.

Referenced by andIRFlags(), llvm::refineInstruction(), llvm::InstCombinerImpl::visitUIToFP(), and llvm::InstCombinerImpl::visitZExt().

hasNoSignedWrap()

bool Instruction::hasNoSignedWrap

(

)

const

Determine whether the no signed wrap flag is set.

Definition at line 394 of file Instruction.cpp.

Referenced by andIRFlags(), buildNew(), checkNoWrapFlags(), llvm::InstCombinerImpl::commonIDivTransforms(), detectShiftUntilZeroIdiom(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpShlConstant(), llvm::InstCombinerImpl::foldICmpSubConstant(), foldMulShl1(), llvm::InstCombinerImpl::FoldShiftByConstant(), isNonZeroRecurrence(), llvm::InstModificationIRStrategy::mutate(), processBinOp(), llvm::InstCombinerImpl::reassociateShiftAmtsOfTwoSameDirectionShifts(), llvm::refineInstruction(), setLimitsForBinOp(), and llvm::InstCombinerImpl::simplifyShrShlDemandedBits().

hasNoSignedZeros()

bool Instruction::hasNoSignedZeros

(

)

const

Determine whether the no-signed-zeros flag is set.

Definition at line 590 of file Instruction.cpp.

References assert().

Referenced by foldSelectBinOpIdentity(), llvm::InstModificationIRStrategy::mutate(), and simplifySelectWithFCmp().

hasNoUnsignedWrap()

bool Instruction::hasNoUnsignedWrap

(

)

const

Determine whether the no unsigned wrap flag is set.

Definition at line 387 of file Instruction.cpp.

Referenced by andIRFlags(), buildNew(), checkNoWrapFlags(), detectShiftUntilZeroIdiom(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpShlConstant(), llvm::InstCombinerImpl::foldICmpSubConstant(), foldMulShl1(), llvm::InstCombinerImpl::FoldShiftByConstant(), isNonZeroRecurrence(), llvm::InstModificationIRStrategy::mutate(), processBinOp(), llvm::InstCombinerImpl::reassociateShiftAmtsOfTwoSameDirectionShifts(), llvm::refineInstruction(), llvm::InstCombinerImpl::simplifyShrShlDemandedBits(), and llvm::InstCombinerImpl::visitSub().

hasPoisonGeneratingAnnotations()

bool llvm::Instruction::hasPoisonGeneratingAnnotations ( ) const

inline

Return true if this instruction has poison-generating flags, return attributes or metadata.

Definition at line 519 of file Instruction.h.

hasPoisonGeneratingFlags()

bool Instruction::hasPoisonGeneratingFlags

(

)

const

Return true if this operator has flags which may cause this instruction to evaluate to poison despite having non-poison inputs.

Definition at line 406 of file Instruction.cpp.

Referenced by canFoldTermCondOfLoop(), and dropPoisonGeneratingFlags().

hasPoisonGeneratingMetadata()

bool Instruction::hasPoisonGeneratingMetadata

(

)

const

Return true if this instruction has poison-generating metadata.

Definition at line 454 of file Instruction.cpp.

References hasMetadata().

hasPoisonGeneratingReturnAttributes()

bool Instruction::hasPoisonGeneratingReturnAttributes

(

)

const

Return true if this instruction has poison-generating attribute.

Definition at line 466 of file Instruction.cpp.

References llvm::AttributeSet::hasAttribute().

Referenced by dropPoisonGeneratingReturnAttributes().

hasSameSpecialState()

bool Instruction::hasSameSpecialState	(	const Instruction *	I2,
		bool	IgnoreAlignment = false
	)		const

This function determines if the speficied instruction has the same "special" characteristics as the current one.

This must be kept in sync with FunctionComparator::cmpOperations in lib/Transforms/IPO/MergeFunctions.cpp.

This means that opcode specific details are the same. As a common example, if we are comparing loads, then hasSameSpecialState would compare the alignments (among other things).

Returns

true if the specific instruction has the same opcde specific characteristics as the current one. Determine if one instruction has the same state as another.

Definition at line 787 of file Instruction.cpp.

References assert(), GEP, and getOpcode().

Referenced by isIdenticalToWhenDefined(), and isSameOperationAs().

insertAfter()

void Instruction::insertAfter

(

Instruction *

InsertPos

)

Insert an unlinked instruction into a basic block immediately after the specified instruction.

Definition at line 109 of file Instruction.cpp.

References llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), and llvm::iplist_impl< IntrusiveListT, TraitsT >::insertAfter().

Referenced by addAssumeNonNull(), llvm::OpenMPIRBuilder::createParallel(), DbgInserterHelper(), optimizeDivRem(), and rewritePHIsForCleanupPad().

insertBefore() [1/3]

void Instruction::insertBefore	(	BasicBlock &	BB,
		InstListType::iterator	InsertPos
	)

Definition at line 126 of file Instruction.cpp.

References adoptDbgRecords(), assert(), DebugMarker, llvm::DbgMarker::empty(), llvm::BasicBlock::getMarker(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), llvm::iplist_impl< IntrusiveListT, TraitsT >::insert(), llvm::BasicBlock::IsNewDbgInfoFormat, and isTerminator().

insertBefore() [2/3]

void Instruction::insertBefore

(

InstListType::iterator

InsertPos

)

Insert an unlinked instruction into a basic block immediately before the specified instruction.

Definition at line 103 of file Instruction.cpp.

References insertBefore().

insertBefore() [3/3]

void Instruction::insertBefore

(

Instruction *

InsertPos

)

Insert an unlinked instruction into a basic block immediately before the specified instruction.

Definition at line 97 of file Instruction.cpp.

References llvm::ilist_node_impl< OptionsT >::getIterator(), and insertBefore().

Referenced by llvm::changeToCall(), llvm::CloneBasicBlock(), cloneInstructionInExitBlock(), CloneLoopBlocks(), ConnectEpilog(), ConnectProlog(), llvm::DbgVariableRecord::createDebugIntrinsic(), llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), llvm::createPHIsForSplitLoopExit(), DbgInserterHelper(), llvm::VPWidenIntOrFpInductionRecipe::execute(), llvm::VPFirstOrderRecurrencePHIRecipe::execute(), llvm::VPReductionPHIRecipe::execute(), llvm::VPCanonicalIVPHIRecipe::execute(), llvm::expandUser(), findBasePointer(), findOrCreatePHIInBlock(), formLCSSAForInstructionsImpl(), generateReproducer(), llvm::SSAUpdater::GetValueInMiddleOfBlock(), HandleByValArgument(), insertBefore(), insertInto(), insertLifetimeMarkersSurroundingCall(), llvm::BPFCoreSharedInfo::insertPassThrough(), insertTrivialPHIs(), moveLCSSAPhis(), movePHIValuesToInsertedBlock(), OptimizeExtractBits(), rematerializeChain(), replaceConstantExprOp(), rewriteMaterializableInstructions(), rewritePHIs(), llvm::JumpThreadingPass::simplifyPartiallyRedundantLoad(), SinkCast(), sinkCmpExpression(), sinkInstruction(), SinkShiftAndTruncate(), splitCallSite(), llvm::SplitIndirectBrCriticalEdges(), llvm::JumpThreadingPass::threadGuard(), tryToReplaceWithGEPBuiltin(), llvm::UnrollRuntimeLoopRemainder(), and versionCallSiteWithCond().

insertInto()

BasicBlock::iterator Instruction::insertInto	(	BasicBlock *	ParentBB,
		InstListType::iterator	It
	)

Inserts an unlinked instruction into ParentBB at position It and returns the iterator of the inserted instruction.

Definition at line 115 of file Instruction.cpp.

References assert(), llvm::BasicBlock::end(), llvm::ilist_node_impl< ilist_detail::compute_node_options< T, Options... >::type >::getIterator(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), and insertBefore().

Referenced by buildPartialInvariantUnswitchConditionalBranch(), cloneInstructionsIntoPredecessorBlockAndUpdateSSAUses(), createWrapper(), llvm::SITargetLowering::emitExpandAtomicRMW(), llvm::FoldReturnIntoUncondBranch(), Instruction(), mergeCompatibleInvokesImpl(), performBlockTailMerging(), replaceArgumentUses(), SplitLandingPadPredecessorsImpl(), llvm::JumpThreadingPass::unfoldSelectInstr(), unswitchNontrivialInvariants(), and unswitchTrivialBranch().

isArithmeticShift()

bool llvm::Instruction::isArithmeticShift ( ) const

inline

Return true if this is an arithmetic shift right.

Definition at line 318 of file Instruction.h.

References getOpcode().

Referenced by llvm::InstCombinerImpl::foldICmpAndShift().

isAssociative() [1/2]

bool Instruction::isAssociative

(

)

const

Return true if the instruction is associative:

Associative operators satisfy: x op (y op z) === (x op y) op z

In LLVM, the Add, Mul, And, Or, and Xor operators are associative.

Definition at line 1186 of file Instruction.cpp.

References llvm::FAdd, llvm::FMul, getOpcode(), II, and isAssociative().

Referenced by llvm::ConstantFoldBinaryInstruction(), llvm::InstCombinerImpl::foldVectorBinop(), isAssociative(), and simplifyAssociativeBinOp().

isAssociative() [2/2]

static bool llvm::Instruction::isAssociative ( unsigned  Opcode )

inlinestatic

Definition at line 698 of file Instruction.h.

References llvm::And, Mul, llvm::Or, and llvm::Xor.

isAtomic()

bool Instruction::isAtomic

(

)

const

Return true if this instruction has an AtomicOrdering of unordered or higher.

Definition at line 969 of file Instruction.cpp.

References getOpcode(), and llvm::NotAtomic.

Referenced by llvm::InstCombinerImpl::foldPHIArgLoadIntoPHI(), hasAtomicLoad(), hasAtomicStore(), llvm::LoadInst::isSimple(), llvm::StoreInst::isSimple(), and llvm::JumpThreadingPass::simplifyPartiallyRedundantLoad().

isBinaryOp() [1/2]

bool llvm::Instruction::isBinaryOp ( ) const

inline

Definition at line 279 of file Instruction.h.

References getOpcode(), and isBinaryOp().

Referenced by llvm::ConstantRange::binaryOp(), canCreateUndefOrPoison(), llvm::BinaryConstantExpr::classof(), llvm::ConstantFoldBinaryInstruction(), llvm::ConstantFoldBinaryOpOperands(), llvm::ConstantFoldFPInstOperands(), llvm::IRBuilderBase::CreateNAryOp(), llvm::ConstantExpr::get(), llvm::ConstantExpr::getBinOpIdentity(), isBinaryOp(), isConstExprSupported(), llvm::isSafeToSpeculativelyExecuteWithOpcode(), llvm::ConstantRange::makeGuaranteedNoWrapRegion(), llvm::VPInstruction::onlyFirstLaneUsed(), llvm::VPInstruction::onlyFirstPartUsed(), and llvm::ConstantRange::overflowingBinaryOp().

isBinaryOp() [2/2]

static bool llvm::Instruction::isBinaryOp ( unsigned  Opcode )

inlinestatic

Definition at line 299 of file Instruction.h.

isBitwiseLogicOp() [1/2]

bool llvm::Instruction::isBitwiseLogicOp ( ) const

inline

Return true if this is and/or/xor.

Definition at line 328 of file Instruction.h.

References getOpcode().

Referenced by llvm::InstCombinerImpl::foldBinOpShiftWithShift(), getBinOpsForFactorization(), llvm::PatternMatch::is_bitwiselogic_op::isOpType(), and rightDistributesOverLeft().

isBitwiseLogicOp() [2/2]

static bool llvm::Instruction::isBitwiseLogicOp ( unsigned  Opcode )

inlinestatic

Determine if the Opcode is and/or/xor.

Definition at line 323 of file Instruction.h.

References llvm::And, llvm::Or, and llvm::Xor.

Referenced by foldBitCastBitwiseLogic(), and simplifyAssocCastAssoc().

isCast() [1/2]

bool llvm::Instruction::isCast ( ) const

inline

Definition at line 282 of file Instruction.h.

References getOpcode(), and isCast().

Referenced by llvm::CastConstantExpr::classof(), llvm::ConstantFoldCastOperand(), llvm::ConstantExprKeyType::create(), llvm::InstCombinerImpl::foldSelectOpOp(), llvm::ConstantExpr::getCast(), llvm::ConstantExpr::isCast(), isCast(), and isConstExprSupported().

isCast() [2/2]

static bool llvm::Instruction::isCast ( unsigned  Opcode )

inlinestatic

Determine if the Opcode is one of the CastInst instructions.

Definition at line 333 of file Instruction.h.

isCommutative() [1/2]

bool Instruction::isCommutative

(

)

const

Return true if the instruction is commutative:

Commutative operators satisfy: (x op y) === (y op x)

In LLVM, these are the commutative operators, plus SetEQ and SetNE, when applied to any type.

Definition at line 1203 of file Instruction.cpp.

References getOpcode(), II, and isCommutative().

Referenced by llvm::RecurrenceDescriptor::AddReductionVar(), areCommutative(), llvm::ConstantFoldBinaryInstruction(), expandBinOp(), foldOrCommuteConstant(), foldSelectBinOpIdentity(), llvm::InstCombinerImpl::foldSelectOpOp(), llvm::InstCombinerImpl::foldVectorBinop(), llvm::ConstantExpr::getBinOpIdentity(), llvm::RISCVTTIImpl::getIntImmCostInst(), isCommutative(), matchStridedStart(), rightDistributesOverLeft(), simplifyAssociativeBinOp(), llvm::InstCombinerImpl::SimplifyDemandedVectorElts(), llvm::BinaryOperator::swapOperands(), tryFactorization(), and llvm::InstCombinerImpl::visitShl().

isCommutative() [2/2]

static bool llvm::Instruction::isCommutative ( unsigned  Opcode )

inlinestatic

Definition at line 711 of file Instruction.h.

References llvm::And, llvm::FAdd, llvm::FMul, Mul, llvm::Or, and llvm::Xor.

isDebugOrPseudoInst()

bool Instruction::isDebugOrPseudoInst

(

)

const

Return true if the instruction is a DbgInfoIntrinsic or PseudoProbeInst.

Definition at line 1159 of file Instruction.cpp.

Referenced by llvm::findAvailablePtrLoadStore(), and ProcessBlock().

isEHPad()

bool llvm::Instruction::isEHPad ( ) const

inline

Return true if the instruction is a variety of EH-block.

Definition at line 824 of file Instruction.h.

References getOpcode().

Referenced by llvm::BasicBlock::canSplitPredecessors(), canSplitPredecessors(), cloneInstructionInExitBlock(), llvm::colorEHFunclets(), llvm::objcarc::createCallInstWithColors(), llvm::ehAwareSplitEdge(), getEHPadFromPredecessor(), HandleInlinedEHPad(), insertDbgVariableRecordsForPHIs(), llvm::insertDebugValuesForPHIs(), llvm::BasicBlock::isEHPad(), isSafeToMove(), isSafeToRemove(), populateEHOperandBundle(), llvm::removeAllNonTerminatorAndEHPadInstructions(), SinkCast(), and llvm::SplitIndirectBrCriticalEdges().

isExact()

bool Instruction::isExact

(

)

const

Determine whether the exact flag is set.

Definition at line 516 of file Instruction.cpp.

Referenced by andIRFlags(), buildNew(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpBinOpEqualityWithConstant(), llvm::InstCombinerImpl::foldICmpDivConstant(), llvm::InstCombinerImpl::foldICmpShrConstant(), llvm::InstCombinerImpl::FoldShiftByConstant(), isNonZeroRecurrence(), llvm::InstModificationIRStrategy::mutate(), processAShr(), processSDiv(), llvm::InstCombinerImpl::reassociateShiftAmtsOfTwoSameDirectionShifts(), llvm::replaceSignedInst(), and llvm::InstCombinerImpl::visitMul().

isFast()

bool Instruction::isFast

(

)

const

Determine whether all fast-math-flags are set.

Definition at line 570 of file Instruction.cpp.

References assert().

Referenced by llvm::LibCallSimplifier::optimizeCall().

isFenceLike()

bool llvm::Instruction::isFenceLike ( ) const

inline

Return true if this instruction behaves like a memory fence: it can load or store to memory location without being given a memory location.

Definition at line 783 of file Instruction.h.

References getOpcode().

isFuncletPad() [1/2]

bool llvm::Instruction::isFuncletPad ( ) const

inline

Definition at line 283 of file Instruction.h.

References getOpcode(), and isFuncletPad().

Referenced by isFuncletPad().

isFuncletPad() [2/2]

static bool llvm::Instruction::isFuncletPad ( unsigned  Opcode )

inlinestatic

Determine if the Opcode is one of the FuncletPadInst instructions.

Definition at line 338 of file Instruction.h.

isIdempotent() [1/2]

bool llvm::Instruction::isIdempotent ( ) const

inline

Return true if the instruction is idempotent:

Idempotent operators satisfy: x op x === x

In LLVM, the And and Or operators are idempotent.

Definition at line 728 of file Instruction.h.

References getOpcode(), and isIdempotent().

Referenced by isIdempotent().

isIdempotent() [2/2]

static bool llvm::Instruction::isIdempotent ( unsigned  Opcode )

inlinestatic

Definition at line 729 of file Instruction.h.

References llvm::And, and llvm::Or.

isIdenticalTo()

bool Instruction::isIdenticalTo

(

const Instruction *

I

)

const

Return true if the specified instruction is exactly identical to the current one.

This means that all operands match and any extra information (e.g. load is volatile) agree.

Definition at line 855 of file Instruction.cpp.

References I, isIdenticalToWhenDefined(), and llvm::Value::SubclassOptionalData.

Referenced by tryToMergeLandingPad(), and llvm::InstCombinerImpl::visitFenceInst().

isIdenticalToWhenDefined()

bool Instruction::isIdenticalToWhenDefined

(

const Instruction *

I

)

const

This is like isIdenticalTo, except that it ignores the SubclassOptionalData flags, which may specify conditions under which the instruction's result is undefined.

Definition at line 860 of file Instruction.cpp.

References llvm::PHINode::block_begin(), llvm::User::getNumOperands(), getOpcode(), llvm::Value::getType(), hasSameSpecialState(), I, llvm::User::op_begin(), and llvm::User::op_end().

Referenced by EliminateDuplicatePHINodesNaiveImpl(), isEqualImpl(), and isIdenticalTo().

isIntDivRem() [1/2]

bool llvm::Instruction::isIntDivRem ( ) const

inline

Definition at line 280 of file Instruction.h.

References getOpcode(), and isIntDivRem().

Referenced by llvm::ConstantFoldBinaryInstruction(), llvm::InstCombinerImpl::foldSelectShuffle(), foldSelectShuffleWith1Binop(), llvm::InstCombinerImpl::foldVectorBinop(), generateKeySubkey(), isIntDivRem(), isValidForAlternation(), and llvm::InstCombinerImpl::SimplifyDemandedVectorElts().

isIntDivRem() [2/2]

static bool llvm::Instruction::isIntDivRem ( unsigned  Opcode )

inlinestatic

Definition at line 303 of file Instruction.h.

isLaunderOrStripInvariantGroup()

bool Instruction::isLaunderOrStripInvariantGroup

(

)

const

Return true if the instruction is a llvm.launder.invariant.group or llvm.strip.invariant.group.

Definition at line 1150 of file Instruction.cpp.

References II.

isLifetimeStartOrEnd()

bool Instruction::isLifetimeStartOrEnd

(

)

const

Return true if the instruction is a llvm.lifetime.start or llvm.lifetime.end marker.

Definition at line 1142 of file Instruction.cpp.

References II.

Referenced by llvm::CodeExtractor::findAllocas().

isLogicalShift()

bool llvm::Instruction::isLogicalShift ( ) const

inline

Return true if this is a logical shift left or a logical shift right.

Definition at line 313 of file Instruction.h.

References getOpcode().

Referenced by canEvaluateShiftedShift(), and canShiftBinOpWithConstantRHS().

isNilpotent() [1/2]

bool llvm::Instruction::isNilpotent ( ) const

inline

Return true if the instruction is nilpotent:

Nilpotent operators satisfy: x op x === Id,

where Id is the identity for the operator, i.e. a constant such that x op Id === x and Id op x === x for all x.

In LLVM, the Xor operator is nilpotent.

Definition at line 742 of file Instruction.h.

References getOpcode(), and isNilpotent().

Referenced by isNilpotent().

isNilpotent() [2/2]

static bool llvm::Instruction::isNilpotent ( unsigned  Opcode )

inlinestatic

Definition at line 743 of file Instruction.h.

References llvm::Xor.

isOnlyUserOfAnyOperand()

bool Instruction::isOnlyUserOfAnyOperand

(

)

It checks if this instruction is the only user of at least one of its operands.

Definition at line 359 of file Instruction.cpp.

References llvm::any_of(), and llvm::User::operands().

isSafeToRemove()

bool Instruction::isSafeToRemove

(

)

const

Return true if the instruction can be removed if the result is unused.

When constant folding some instructions cannot be removed even if their results are unused. Specifically terminator instructions and calls that may have side effects cannot be removed without semantically changing the generated program.

Definition at line 1127 of file Instruction.cpp.

References isEHPad(), isTerminator(), and mayHaveSideEffects().

isSameOperationAs()

bool Instruction::isSameOperationAs	(	const Instruction *	I,
		unsigned	flags = 0
	)		const

This function determines if the specified instruction executes the same operation as the current one.

This means that the opcodes, type, operand types and any other factors affecting the operation must be the same. This is similar to isIdenticalTo except the operands themselves don't have to be identical.

Returns

true if the specified instruction is the same operation as the current one. Determine if one instruction is the same operation as another.

Definition at line 887 of file Instruction.cpp.

References CompareIgnoringAlignment, CompareUsingScalarTypes, llvm::User::getNumOperands(), getOpcode(), llvm::User::getOperand(), llvm::Value::getType(), hasSameSpecialState(), and I.

Referenced by llvm::InstCombinerImpl::foldSelectOpOp().

isShift() [1/2]

bool llvm::Instruction::isShift ( ) const

inline

Definition at line 281 of file Instruction.h.

References getOpcode(), and isShift().

Referenced by detectShiftUntilZeroIdiom(), llvm::InstCombinerImpl::foldICmpAndShift(), llvm::InstCombinerImpl::foldSelectShuffle(), foldSelectShuffleWith1Binop(), llvm::InstCombinerImpl::foldVectorBinop(), llvm::ARMTTIImpl::getArithmeticInstrCost(), llvm::PatternMatch::is_shift_op::isOpType(), isShift(), rightDistributesOverLeft(), and llvm::InstCombinerImpl::SimplifyDemandedVectorElts().

isShift() [2/2]

static bool llvm::Instruction::isShift ( unsigned  Opcode )

inlinestatic

Determine if the Opcode is one of the shift instructions.

Definition at line 308 of file Instruction.h.

isSpecialTerminator() [1/2]

bool llvm::Instruction::isSpecialTerminator ( ) const

inline

Definition at line 284 of file Instruction.h.

References getOpcode(), and isSpecialTerminator().

Referenced by isSpecialTerminator(), llvm::JumpThreadingPass::maybeMergeBasicBlockIntoOnlyPred(), and llvm::MergeBlockIntoPredecessor().

isSpecialTerminator() [2/2]

static bool llvm::Instruction::isSpecialTerminator ( unsigned  Opcode )

inlinestatic

Returns true if the Opcode is a "special" terminator that does more than branch to a successor (e.g.

have a side effect or return a value).

Definition at line 344 of file Instruction.h.

isTerminator() [1/2]

bool llvm::Instruction::isTerminator ( ) const

inline

Definition at line 277 of file Instruction.h.

References getOpcode(), and isTerminator().

Referenced by CalculateUnswitchCostMultiplier(), findLocationForEntrySafepoint(), getInsertionPointAfterDef(), llvm::MustBeExecutedContextExplorer::getMustBeExecutedNextInstruction(), insertBefore(), llvm::isCriticalEdge(), isRemovableWrite(), isSafeToMove(), isSafeToRemove(), isTerminator(), llvm::InstDeleterIRStrategy::mutate(), llvm::MemoryDependenceResults::removeInstruction(), and llvm::OutlinableRegion::splitCandidate().

isTerminator() [2/2]

static bool llvm::Instruction::isTerminator ( unsigned  Opcode )

inlinestatic

Definition at line 292 of file Instruction.h.

isUnaryOp() [1/2]

bool llvm::Instruction::isUnaryOp ( ) const

inline

Definition at line 278 of file Instruction.h.

References getOpcode(), and isUnaryOp().

Referenced by llvm::ConstantFoldUnaryInstruction(), llvm::ConstantFoldUnaryOpOperand(), llvm::IRBuilderBase::CreateNAryOp(), llvm::isSafeToSpeculativelyExecuteWithOpcode(), and isUnaryOp().

isUnaryOp() [2/2]

static bool llvm::Instruction::isUnaryOp ( unsigned  Opcode )

inlinestatic

Definition at line 296 of file Instruction.h.

isUsedOutsideOfBlock()

bool Instruction::isUsedOutsideOfBlock

(

const BasicBlock *

BB

)

const

Return true if there are any uses of this instruction in blocks other than the specified block.

Note that PHI nodes are considered to evaluate their operands in the corresponding predecessor block.

Definition at line 911 of file Instruction.cpp.

References llvm::PHINode::getIncomingBlock(), I, and llvm::Value::uses().

Referenced by removeEmptyCleanup().

isVolatile()

bool Instruction::isVolatile

(

)

const

Return true if this instruction has a volatile memory access.

Definition at line 1008 of file Instruction.cpp.

References getOpcode(), II, and MI.

Referenced by llvm::expandAtomicMemCpyAsLoop(), llvm::MemoryDependenceResults::getNonLocalPointerDependency(), and llvm::MemoryDependenceResults::getSimplePointerDependencyFrom().

mayHaveSideEffects()

bool Instruction::mayHaveSideEffects

(

)

const

Return true if the instruction may have side effects.

Side effects are:

• Writing to memory.
• Unwinding.
• Not returning (e.g. an infinite loop).

Note that this does not consider malloc and alloca to have side effects because the newly allocated memory is completely invisible to instructions which don't use the returned value. For cases where this matters, isSafeToSpeculativelyExecute may be more appropriate.

Definition at line 1123 of file Instruction.cpp.

References mayThrow(), mayWriteToMemory(), and willReturn().

Referenced by canMoveAboveCall(), llvm::deleteDeadLoop(), hasHardUserWithinLoop(), isSafePHIToSpeculate(), isSafeToRemove(), and llvm::MergeBlockIntoPredecessor().

mayReadFromMemory()

bool Instruction::mayReadFromMemory

(

)

const

Return true if this instruction may read memory.

Definition at line 929 of file Instruction.cpp.

References getOpcode().

Referenced by GetLocation(), IsAcceptableTarget(), llvm::Dependence::isAnti(), llvm::Dependence::isFlow(), and llvm::Dependence::isInput().

mayReadOrWriteMemory()

bool llvm::Instruction::mayReadOrWriteMemory ( ) const

inline

Return true if this instruction may read or write memory.

Definition at line 754 of file Instruction.h.

Referenced by llvm::AliasSetTracker::addUnknown(), llvm::AliasSet::aliasesUnknownInst(), and llvm::intersectAccessGroups().

mayThrow()

bool Instruction::mayThrow

(

bool

IncludePhaseOneUnwind = false

)

const

Return true if this instruction may throw an exception.

If IncludePhaseOneUnwind is set, this will also include cases where phase one unwinding may unwind past this frame due to skipping of cleanup landingpads.

Definition at line 1096 of file Instruction.cpp.

References canUnwindPastLandingPad(), llvm::BasicBlock::getFirstNonPHI(), and getOpcode().

Referenced by isSafeToMove(), and mayHaveSideEffects().

mayWriteToMemory()

bool Instruction::mayWriteToMemory

(

)

const

Return true if this instruction may modify memory.

Definition at line 949 of file Instruction.cpp.

References getOpcode().

Referenced by llvm::findAvailablePtrLoadStore(), findInitTrampolineFromBB(), GetLocation(), llvm::Dependence::isAnti(), llvm::Dependence::isFlow(), llvm::Dependence::isOutput(), isSafeToMove(), and mayHaveSideEffects().

mergeDIAssignID()

void Instruction::mergeDIAssignID

(

ArrayRef< const Instruction * >

SourceInstructions

)

Merge the DIAssignID metadata from this instruction and those attached to instructions in SourceInstructions.

This process performs a RAUW on the MetadataAsValue uses of the merged DIAssignID nodes. Not every instruction in SourceInstructions needs to have DIAssignID metadata. If none of them do then nothing happens. If this instruction does not have a DIAssignID attachment but at least one in SourceInstructions does then the merged one will be attached to it. However, instructions without attachments in SourceInstructions are not modified.

Definition at line 936 of file DebugInfo.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::SmallVectorBase< Size_T >::empty(), llvm::SmallVectorTemplateCommon< T, typename >::end(), End, getFunction(), getMetadata(), I, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::at::RAUW(), and setMetadata().

Referenced by llvm::InstCombinerImpl::mergeStoreIntoSuccessor().

moveAfter()

void Instruction::moveAfter

(

Instruction *

MovePos

)

Unlink this instruction from its current basic block and insert it into the basic block that MovePos lives in, right after MovePos.

Definition at line 175 of file Instruction.cpp.

References llvm::ilist_node_impl< OptionsT >::getIterator(), and llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent().

Referenced by rewriteDebugUsers(), and llvm::slpvectorizer::BoUpSLP::vectorizeTree().

moveAfterPreserving()

void Instruction::moveAfterPreserving

(

Instruction *

MovePos

)

See moveBeforePreserving .

Definition at line 183 of file Instruction.cpp.

References llvm::ilist_node_impl< OptionsT >::getIterator(), and llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent().

moveBefore() [1/2]

void Instruction::moveBefore	(	BasicBlock &	BB,
		InstListType::iterator	I
	)

Unlink this instruction and insert into BB before I.

Precondition

I is a valid iterator into BB.

Definition at line 191 of file Instruction.cpp.

References I.

moveBefore() [2/2]

void Instruction::moveBefore

(

Instruction *

MovePos

)

Unlink this instruction from its current basic block and insert it into the basic block that MovePos lives in, right before MovePos.

Definition at line 167 of file Instruction.cpp.

References llvm::ilist_node_impl< OptionsT >::getIterator(), and llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent().

Referenced by llvm::VPlan::execute(), llvm::CodeExtractor::extractCodeRegion(), llvm::InstCombinerImpl::freezeOtherUses(), NegateValue(), optimizeBranch(), removeEmptyCleanup(), llvm::coro::salvageDebugInfo(), llvm::setWidenableBranchCond(), simplifyRelocatesOffABase(), SinkInstruction(), sinkLastInstruction(), sinkSpillUsesAfterCoroBegin(), turnGuardIntoBranch(), unswitchNontrivialInvariants(), unswitchTrivialBranch(), versionCallSiteWithCond(), llvm::InstCombinerImpl::visitAllocaInst(), llvm::InstCombinerImpl::visitCallInst(), and llvm::widenWidenableBranch().

moveBeforePreserving() [1/2]

void Instruction::moveBeforePreserving	(	BasicBlock &	BB,
		InstListType::iterator	I
	)

(See other overload for moveBeforePreserving).

Definition at line 195 of file Instruction.cpp.

References I.

moveBeforePreserving() [2/2]

void Instruction::moveBeforePreserving

(

Instruction *

MovePos

)

Perform a moveBefore operation, while signalling that the caller intends to preserve the original ordering of instructions.

This implicitly means that any adjacent debug-info should move with this instruction. This method is currently a no-op placeholder, but it will become meaningful when the "RemoveDIs" project is enabled.

Definition at line 171 of file Instruction.cpp.

References llvm::ilist_node_impl< OptionsT >::getIterator(), and llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent().

Referenced by llvm::MergeBlockIntoPredecessor(), and raiseUserConstantDataAllocasToEntryBlock().

operator=()

Instruction & llvm::Instruction::operator= ( const Instruction &  )

delete

removeFromParent()

void Instruction::removeFromParent

(

)

This method unlinks 'this' from the containing basic block, but does not delete it.

Definition at line 78 of file Instruction.cpp.

References llvm::ilist_node_impl< ilist_detail::compute_node_options< T, Options... >::type >::getIterator(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), and handleMarkerRemoval().

Referenced by DbgInserterHelper(), llvm::SITargetLowering::emitExpandAtomicRMW(), llvm::InstCombinerImpl::matchBSwapOrBitReverse(), rewritePHIsForCleanupPad(), and llvm::JumpThreadingPass::unfoldSelectInstr().

replaceSuccessorWith()

void Instruction::replaceSuccessorWith	(	BasicBlock *	OldBB,
		BasicBlock *	NewBB
	)

Replace specified successor OldBB to point at the provided block.

This instruction must be a terminator.

Definition at line 1246 of file Instruction.cpp.

References getNumSuccessors(), getSuccessor(), Idx, and setSuccessor().

Referenced by insertUniqueBackedgeBlock(), and llvm::BasicBlock::splitBasicBlockBefore().

setAAMetadata()

void Instruction::setAAMetadata

(

const AAMDNodes &

N

)

Sets the AA metadata on this instruction from the AAMDNodes structure.

Definition at line 1727 of file Metadata.cpp.

References N, and setMetadata().

Referenced by doPromotion(), foldConsecutiveLoads(), llvm::InstCombinerImpl::mergeStoreIntoSuccessor(), llvm::promoteLoopAccessesToScalars(), llvm::InstCombinerImpl::SimplifyAnyMemTransfer(), llvm::JumpThreadingPass::simplifyPartiallyRedundantLoad(), speculateSelectInstLoads(), unpackLoadToAggregate(), and unpackStoreToAggregate().

setDebugLoc()

void llvm::Instruction::setDebugLoc ( DebugLoc  Loc )

inline

Set the debug location information for this instruction.

Definition at line 463 of file Instruction.h.

Referenced by addBoundsChecking(), applyMergedLocation(), buildClonedLoopBlocks(), cloneInstructionsIntoPredecessorBlockAndUpdateSSAUses(), copyMetadata(), llvm::createCallMatchingInvoke(), llvm::DbgVariableRecord::createDebugIntrinsic(), createFFSIntrinsic(), llvm::InnerLoopVectorizer::createInductionResumeValue(), createPopcntIntrinsic(), llvm::OpenMPIRBuilder::createTask(), DoFlattenLoopPair(), dropLocation(), llvm::OpenMPIRBuilder::emitTargetTask(), llvm::VPWidenIntOrFpInductionRecipe::execute(), llvm::VPCanonicalIVPHIRecipe::execute(), llvm::VPActiveLaneMaskPHIRecipe::execute(), llvm::VPEVLBasedIVPHIRecipe::execute(), fixupDebugInfoPostExtraction(), foldCondBranchOnValueKnownInPredecessorImpl(), llvm::InstCombinerImpl::foldOpIntoPhi(), formLCSSAForInstructionsImpl(), generateReproducer(), llvm::SSAUpdater::GetValueInMiddleOfBlock(), HandleByValArgumentInit(), INITIALIZE_PASS(), llvm::InlineFunction(), insertCall(), insertUniqueBackedgeBlock(), llvm::AMDGPU::instrumentAddressImpl(), LowerNegateToMultiply(), llvm::InstCombinerImpl::mergeStoreIntoSuccessor(), optimizeDivRem(), OptimizeExtractBits(), performBlockTailMerging(), llvm::InstCombinerImpl::PHIArgMergedDebugLoc(), llvm::JumpThreadingPass::processBlock(), llvm::JumpThreadingPass::processImpliedCondition(), processSaturatingInst(), llvm::JumpThreadingPass::processThreadableEdges(), llvm::promoteLoopAccessesToScalars(), llvm::SCCPSolver::removeNonFeasibleEdges(), llvm::removeUnwindEdge(), replaceArgumentUses(), replaceConditionalBranchesOnConstant(), llvm::replaceSignedInst(), llvm::coro::salvageDebugInfo(), llvm::setProbeDistributionFactor(), llvm::JumpThreadingPass::simplifyPartiallyRedundantLoad(), sinkAndCmp0Expression(), sinkCmpExpression(), SinkShiftAndTruncate(), llvm::BasicBlock::splitBasicBlock(), llvm::BasicBlock::splitBasicBlockBefore(), llvm::SplitBlockAndInsertIfThenElse(), SplitBlockPredecessorsImpl(), splitCallSite(), llvm::SplitKnownCriticalEdge(), SplitLandingPadPredecessorsImpl(), llvm::splitLoopBound(), llvm::JumpThreadingPass::threadEdge(), llvm::JumpThreadingPass::threadGuard(), tryToShorten(), TryToShrinkGlobalToBoolean(), llvm::JumpThreadingPass::tryToUnfoldSelectInCurrBB(), llvm::UnrollRuntimeLoopRemainder(), unswitchNontrivialInvariants(), unswitchTrivialBranch(), unswitchTrivialSwitch(), and updateForIncomingValueLocation().

setFast()

void Instruction::setFast

(

bool

B

)

Set or clear all fast-math-flags on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 520 of file Instruction.cpp.

References assert(), and B.

Referenced by llvm::InstModificationIRStrategy::mutate().

setFastMathFlags()

void Instruction::setFastMathFlags

(

FastMathFlags

FMF

)

Convenience function for setting multiple fast-math flags on this instruction, which must be an operator which supports these flags.

See LangRef.html for the meaning of these flags.

Definition at line 560 of file Instruction.cpp.

References assert().

Referenced by CreateAdd(), CreateMul(), llvm::BinaryOperator::CreateWithFMF(), llvm::InstCombinerImpl::foldSelectOpOp(), foldShuffleOfUnaryOps(), llvm::InstCombinerImpl::SimplifyAssociativeOrCommutative(), and llvm::InstCombinerImpl::visitFNeg().

setHasAllowContract()

void Instruction::setHasAllowContract

(

bool

B

)

Set or clear the allow-contract flag on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 550 of file Instruction.cpp.

References assert(), and B.

Referenced by llvm::InstModificationIRStrategy::mutate().

setHasAllowReassoc()

void Instruction::setHasAllowReassoc

(

bool

B

)

Set or clear the reassociation flag on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 525 of file Instruction.cpp.

References assert(), and B.

Referenced by llvm::InstModificationIRStrategy::mutate().

setHasAllowReciprocal()

void Instruction::setHasAllowReciprocal

(

bool

B

)

Set or clear the allow-reciprocal flag on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 545 of file Instruction.cpp.

References assert(), and B.

Referenced by llvm::InstModificationIRStrategy::mutate().

setHasApproxFunc()

void Instruction::setHasApproxFunc

(

bool

B

)

Set or clear the approximate-math-functions flag on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 555 of file Instruction.cpp.

References assert(), and B.

Referenced by llvm::InstModificationIRStrategy::mutate().

setHasNoInfs()

void Instruction::setHasNoInfs

(

bool

B

)

Set or clear the no-infs flag on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 535 of file Instruction.cpp.

References assert(), and B.

Referenced by dropPoisonGeneratingFlags(), foldFNegIntoConstant(), and llvm::InstModificationIRStrategy::mutate().

setHasNoNaNs()

void Instruction::setHasNoNaNs

(

bool

B

)

Set or clear the no-nans flag on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 530 of file Instruction.cpp.

References assert(), and B.

Referenced by dropPoisonGeneratingFlags(), and llvm::InstModificationIRStrategy::mutate().

setHasNoSignedWrap()

void Instruction::setHasNoSignedWrap

(

bool

b = true

)

Set or clear the nsw flag on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 370 of file Instruction.cpp.

Referenced by andIRFlags(), llvm::InstCombinerImpl::commonShiftTransforms(), copyIRFlags(), llvm::BinaryOperator::CreateNSW(), llvm::InstCombinerImpl::foldAddWithConstant(), foldShiftedShift(), llvm::ConstantExpr::getAsInstruction(), llvm::SCEVExpander::hoistIVInc(), llvm::InstModificationIRStrategy::mutate(), NegateValue(), llvm::InstCombinerImpl::reassociateShiftAmtsOfTwoSameDirectionShifts(), llvm::refineInstruction(), simplifyIRemMulShl(), llvm::InstCombinerImpl::visitMul(), and llvm::InstCombinerImpl::visitSub().

setHasNoSignedZeros()

void Instruction::setHasNoSignedZeros

(

bool

B

)

Set or clear the no-signed-zeros flag on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 540 of file Instruction.cpp.

References assert(), and B.

Referenced by foldFNegIntoConstant(), llvm::InstModificationIRStrategy::mutate(), and llvm::InstCombinerImpl::visitFNeg().

setHasNoUnsignedWrap()

void Instruction::setHasNoUnsignedWrap

(

bool

b = true

)

Set or clear the nuw flag on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 363 of file Instruction.cpp.

Referenced by andIRFlags(), llvm::InstCombinerImpl::commonShiftTransforms(), copyIRFlags(), llvm::BinaryOperator::CreateNUW(), llvm::InstCombinerImpl::foldAddWithConstant(), foldShiftedShift(), llvm::ConstantExpr::getAsInstruction(), llvm::SCEVExpander::hoistIVInc(), llvm::InstModificationIRStrategy::mutate(), NegateValue(), llvm::InstCombinerImpl::reassociateShiftAmtsOfTwoSameDirectionShifts(), llvm::refineInstruction(), simplifyIRemMulShl(), llvm::InstCombinerImpl::visitMul(), and llvm::InstCombinerImpl::visitSub().

setIsExact()

void Instruction::setIsExact

(

bool

b = true

)

Set or clear the exact flag on this instruction, which must be an operator which supports this flag.

See LangRef.html for the meaning of this flag.

Definition at line 377 of file Instruction.cpp.

Referenced by andIRFlags(), llvm::InstCombinerImpl::commonIDivTransforms(), llvm::InstCombinerImpl::commonShiftTransforms(), copyIRFlags(), llvm::BinaryOperator::CreateExact(), foldShiftedShift(), llvm::ConstantExpr::getAsInstruction(), llvm::InstModificationIRStrategy::mutate(), llvm::InstCombinerImpl::reassociateShiftAmtsOfTwoSameDirectionShifts(), llvm::replaceSignedInst(), llvm::InstCombinerImpl::SimplifyDemandedUseBits(), llvm::InstCombinerImpl::visitAShr(), llvm::InstCombinerImpl::visitSDiv(), and llvm::InstCombinerImpl::visitUDiv().

setMetadata() [1/2]

void Instruction::setMetadata	(	StringRef	Kind,
		MDNode *	Node
	)

Definition at line 1575 of file Metadata.cpp.

References llvm::Value::getContext(), hasMetadata(), and setMetadata().

setMetadata() [2/2]

void Instruction::setMetadata	(	unsigned	KindID,
		MDNode *	Node
	)

Set the metadata of the specified kind to the specified node.

This updates or replaces metadata if already present, or removes it if Node is null.

Definition at line 1642 of file Metadata.cpp.

References assert(), hasMetadata(), and llvm::Value::setMetadata().

Referenced by AddAliasScopeMetadata(), addAnnotationMetadata(), addBasicBlockMetadata(), llvm::LoopVersioning::annotateInstWithNoAlias(), llvm::annotateValueSite(), llvm::memprof::CallStackTrie::buildAndAttachMIBMetadata(), combineStoreToNewValue(), llvm::ConstantFoldTerminator(), copyMetadata(), copyMetadataForAtomic(), llvm::copyMetadataForLoad(), llvm::copyNonnullMetadata(), llvm::copyRangeMetadata(), llvm::createCallMatchingInvoke(), llvm::IRBuilderBase::CreateElementUnorderedAtomicMemCpy(), llvm::IRBuilderBase::CreateElementUnorderedAtomicMemMove(), llvm::IRBuilderBase::CreateElementUnorderedAtomicMemSet(), llvm::IRBuilderBase::CreateMemSet(), llvm::IRBuilderBase::CreateMemSetInline(), llvm::IRBuilderBase::CreateMemTransferInst(), llvm::IRBuilderBase::CreatePreserveArrayAccessIndex(), llvm::IRBuilderBase::CreatePreserveStructAccessIndex(), llvm::IRBuilderBase::CreatePreserveUnionAccessIndex(), findBasePointer(), llvm::InstCombinerImpl::foldPHIArgLoadIntoPHI(), handlePhiDef(), insertNewDbgInst(), insertUniqueBackedgeBlock(), mergeDIAssignID(), migrateDebugInfo(), llvm::MetadataLoader::MetadataLoaderImpl::parseMetadataAttachment(), performBranchToCommonDestFolding(), llvm::promoteCall(), propagateMemProfHelper(), llvm::propagateMetadata(), setAAMetadata(), llvm::setIrrLoopHeaderMetadata(), llvm::setLoopEstimatedTripCount(), setMetadata(), setNoSanitizeMetadata(), llvm::InstCombinerImpl::SimplifyAnyMemTransfer(), llvm::SplitBlockAndInsertIfThenElse(), SplitBlockPredecessorsImpl(), swapProfMetadata(), unswitchNontrivialInvariants(), upgradeAMDGCNIntrinsicCall(), upgradeX86IntrinsicCall(), and ~Instruction().

setNonNeg()

void Instruction::setNonNeg

(

bool

b = true

)

Set or clear the nneg flag on this instruction, which must be a zext instruction.

Definition at line 381 of file Instruction.cpp.

References assert(), llvm::PossiblyNonNegInst::NonNeg, and llvm::Value::SubclassOptionalData.

Referenced by andIRFlags(), copyIRFlags(), dropPoisonGeneratingFlags(), llvm::refineInstruction(), llvm::replaceSignedInst(), llvm::InstCombinerImpl::visitUIToFP(), and llvm::InstCombinerImpl::visitZExt().

setNoSanitizeMetadata()

void Instruction::setNoSanitizeMetadata

(

)

Sets the nosanitize metadata on this instruction.

Definition at line 1734 of file Metadata.cpp.

References llvm::MDNode::get(), llvm::Value::getContext(), and setMetadata().

setSubclassData()

template<typename BitfieldElement >

void llvm::Instruction::setSubclassData ( typename BitfieldElement::Type  Value )

inlineprotected

Definition at line 1023 of file Instruction.h.

setSuccessor()

void Instruction::setSuccessor	(	unsigned	Idx,
		BasicBlock *	BB
	)

Update the specified successor to point at the provided block.

This instruction must be a terminator.

Definition at line 1234 of file Instruction.cpp.

References getOpcode(), and llvm_unreachable.

Referenced by cloneLoopBlocks(), CloneLoopBlocks(), llvm::createMemCpyLoopKnownSize(), llvm::SPIRVMergeRegionExitTargets::replaceBranchTargets(), replaceSuccessorWith(), llvm::SplitKnownCriticalEdge(), llvm::JumpThreadingPass::threadEdge(), and llvm::JumpThreadingPass::threadThroughTwoBasicBlocks().

swapProfMetadata()

void Instruction::swapProfMetadata

(

)

If the instruction has "branch_weights" MD_prof metadata and the MDNode has three operands (including name string), swap the order of the metadata.

Definition at line 1257 of file Instruction.cpp.

References llvm::MDNode::get(), llvm::getBranchWeightMDNode(), llvm::getBranchWeightOffset(), llvm::MDNode::getContext(), llvm::MDNode::getNumOperands(), llvm::MDNode::getOperand(), Idx, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and setMetadata().

Referenced by llvm::BranchInst::swapSuccessors().

updateLocationAfterHoist()

void Instruction::updateLocationAfterHoist

(

)

Updates the debug location given that the instruction has been hoisted from a block to a predecessor of that block.

Note: it is undefined behavior to call this on an instruction not currently inserted into a function.

Definition at line 965 of file DebugInfo.cpp.

References dropLocation().

user_back() [1/2]

Instruction * llvm::Instruction::user_back ( )

inline

Specialize the methods defined in Value, as we know that an instruction can only be used by other instructions.

Definition at line 169 of file Instruction.h.

Referenced by foldInsSequenceIntoSplat(), llvm::InstCombinerImpl::foldIntegerTypedPHI(), llvm::ARMTTIImpl::getArithmeticInstrCost(), llvm::ARMTTIImpl::getCmpSelInstrCost(), llvm::LoopVectorizationCostModel::getReductionPatternCost(), isDeadPHICycle(), isNotUsedOrFoldableInLoop(), promoteSingleBlockAlloca(), replaceExtractElements(), ShouldBreakUpSubtract(), shouldExpandCmpArithRMWInIR(), llvm::InstCombinerImpl::SliceUpIllegalIntegerPHI(), speculatePHINodeLoads(), llvm::FastISel::tryToFoldLoad(), llvm::InstCombinerImpl::visitPHINode(), llvm::InstCombinerImpl::visitSExt(), and llvm::InstCombinerImpl::visitZExt().

user_back() [2/2]

const Instruction * llvm::Instruction::user_back ( ) const

inline

Definition at line 170 of file Instruction.h.

willReturn()

bool Instruction::willReturn

(

)

const

Return true if the instruction will return (unwinding is considered as a form of returning control flow here).

Definition at line 1132 of file Instruction.cpp.

Referenced by isRemovableWrite(), isSafeToMove(), and mayHaveSideEffects().

Friends And Related Function Documentation

BasicBlock

friend class BasicBlock

friend

Various leaf nodes.

Definition at line 997 of file Instruction.h.

SymbolTableListTraits< Instruction, ilist_iterator_bits< true >, ilist_parent< BasicBlock > >

friend class SymbolTableListTraits< Instruction, ilist_iterator_bits< true >, ilist_parent< BasicBlock > >

friend

Definition at line 938 of file Instruction.h.

Member Data Documentation

DebugMarker

DbgMarker* llvm::Instruction::DebugMarker = nullptr

Optional marker recording the position for debugging information that takes effect immediately before this instruction.

Null unless there is debugging information present.

Definition at line 84 of file Instruction.h.

Referenced by adoptDbgRecords(), cloneDebugInfoFrom(), dropDbgRecords(), dropOneDbgRecord(), handleMarkerRemoval(), insertBefore(), llvm::DbgMarker::removeFromParent(), and llvm::DbgMarker::removeMarker().

---

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

• include/llvm/IR/Instruction.h
• lib/IR/DebugInfo.cpp
• lib/IR/Instruction.cpp
• lib/IR/Metadata.cpp