This class represents a freeze function that returns random concrete value if an operand is either a poison value or an undef value. More...
#include "llvm/IR/Instructions.h"
Inheritance diagram for llvm::FreezeInst:
Public Member Functions | |
| FreezeInst (Value *S, const Twine &NameStr="", InsertPosition InsertBefore=nullptr) | |
 Public Member Functions inherited from llvm::UnaryInstruction | |
| void * | operator new (size_t S) |
| void | operator delete (void *Ptr) |
| DECLARE_TRANSPARENT_OPERAND_ACCESSORS (Value) | |
| Transparently provide more efficient getOperand methods. | |
| Public Member Functions inherited from llvm::Instruction | |
| 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 | isFPDivRem () 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 | hasNonDebugLocLoopMetadata () const |
| 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, bool IntersectAttrs=false) 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, bool IntersectAttrs=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={}) |
| 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, HungOffOperandsAllocMarker) |
| Placement delete - required by std, called if the ctor throws. | |
| void | operator delete (void *Usr, IntrusiveOperandsAllocMarker) |
| Placement delete - required by std, called if the ctor throws. | |
| void | operator delete (void *Usr, IntrusiveOperandsAndDescriptorAllocMarker) |
| 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 | 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, function_ref< bool(Value &Value, APInt &Offset)> ExternalAnalysis=nullptr) |
| 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 bool | classof (const Instruction *I) |
| static bool | classof (const Value *V) |
| Static Public Member Functions inherited from llvm::UnaryInstruction | |
| static bool | classof (const Instruction *I) |
| static bool | classof (const Value *V) |
| Static Public Member Functions inherited from llvm::Instruction | |
| 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 | isFPDivRem (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. | |
Protected Member Functions | |
| FreezeInst * | cloneImpl () const |
| Clone an identical FreezeInst. | |
| Protected Member Functions inherited from llvm::UnaryInstruction | |
| UnaryInstruction (Type *Ty, unsigned iType, Value *V, InsertPosition InsertBefore=nullptr) | |
| Protected Member Functions inherited from llvm::Instruction | |
| ~Instruction () | |
| template<typename BitfieldElement > | |
| BitfieldElement::Type | getSubclassData () const |
| template<typename BitfieldElement > | |
| void | setSubclassData (typename BitfieldElement::Type Value) |
| Instruction (Type *Ty, unsigned iType, AllocInfo AllocInfo, InsertPosition InsertBefore=nullptr) | |
| Protected Member Functions inherited from llvm::User | |
| void * | operator new (size_t Size)=delete |
| void * | operator new (size_t Size, HungOffOperandsAllocMarker) |
| Allocate a User with an operand pointer co-allocated. | |
| void * | operator new (size_t Size, IntrusiveOperandsAllocMarker allocTrait) |
| Allocate a User with the operands co-allocated. | |
| void * | operator new (size_t Size, IntrusiveOperandsAndDescriptorAllocMarker allocTrait) |
| Allocate a User with the operands co-allocated. | |
| User (Type *ty, unsigned vty, AllocInfo AllocInfo) | |
| 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 | Instruction |
Additional Inherited Members | |
| Public Types inherited from llvm::Instruction | |
| enum | OperationEquivalenceFlags { CompareIgnoringAlignment = 1 << 0 , CompareUsingScalarTypes = 1 << 1 , CompareUsingIntersectedAttrs = 1 << 2 } |
| 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 Attributes inherited from llvm::Instruction | |
| DbgMarker * | DebugMarker = nullptr |
| Optional marker recording the position for debugging information that takes effect immediately before this instruction. | |
| Static Public Attributes inherited from llvm::Value | |
| static constexpr unsigned | MaxAlignmentExponent = 32 |
| The maximum alignment for instructions. | |
| static constexpr uint64_t | MaximumAlignment = 1ULL << MaxAlignmentExponent |
| Protected Types inherited from llvm::Instruction | |
| 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 |
| 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
This class represents a freeze function that returns random concrete value if an operand is either a poison value or an undef value.
Definition at line 5083 of file Instructions.h.
Constructor & Destructor Documentation
◆ FreezeInst()
|
explicit |
Definition at line 4225 of file Instructions.cpp.
References Name, and llvm::Value::setName().
Member Function Documentation
◆ classof() [1/2]
|
inlinestatic |
◆ classof() [2/2]
Definition at line 5099 of file Instructions.h.
References classof().
◆ cloneImpl()
|
protected |
Clone an identical FreezeInst.
Definition at line 4459 of file Instructions.cpp.
References llvm::User::getOperand().
Friends And Related Function Documentation
◆ Instruction
|
friend |
Definition at line 5086 of file Instructions.h.
The documentation for this class was generated from the following files:
- include/llvm/IR/Instructions.h
- lib/IR/Instructions.cpp
