LLVM 22.0.0git
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This class is the base class for the comparison instructions. More...
#include "llvm/IR/InstrTypes.h"
Public Types | |
enum | Predicate : unsigned { FCMP_FALSE = 0 , FCMP_OEQ = 1 , FCMP_OGT = 2 , FCMP_OGE = 3 , FCMP_OLT = 4 , FCMP_OLE = 5 , FCMP_ONE = 6 , FCMP_ORD = 7 , FCMP_UNO = 8 , FCMP_UEQ = 9 , FCMP_UGT = 10 , FCMP_UGE = 11 , FCMP_ULT = 12 , FCMP_ULE = 13 , FCMP_UNE = 14 , FCMP_TRUE = 15 , FIRST_FCMP_PREDICATE = FCMP_FALSE , LAST_FCMP_PREDICATE = FCMP_TRUE , BAD_FCMP_PREDICATE = FCMP_TRUE + 1 , ICMP_EQ = 32 , ICMP_NE = 33 , ICMP_UGT = 34 , ICMP_UGE = 35 , ICMP_ULT = 36 , ICMP_ULE = 37 , ICMP_SGT = 38 , ICMP_SGE = 39 , ICMP_SLT = 40 , ICMP_SLE = 41 , FIRST_ICMP_PREDICATE = ICMP_EQ , LAST_ICMP_PREDICATE = ICMP_SLE , BAD_ICMP_PREDICATE = ICMP_SLE + 1 } |
This enumeration lists the possible predicates for CmpInst subclasses. More... | |
using | PredicateField = Bitfield::Element< Predicate, 0, 6, LAST_ICMP_PREDICATE > |
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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 > > |
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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 > |
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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 | |
void * | operator new (size_t S) |
void | operator delete (void *Ptr) |
OtherOps | getOpcode () const |
Get the opcode casted to the right type. | |
Predicate | getPredicate () const |
Return the predicate for this instruction. | |
void | setPredicate (Predicate P) |
Set the predicate for this instruction to the specified value. | |
bool | isFPPredicate () const |
bool | isIntPredicate () const |
Predicate | getInversePredicate () const |
For example, EQ -> NE, UGT -> ULE, SLT -> SGE, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc. | |
Predicate | getOrderedPredicate () const |
Predicate | getUnorderedPredicate () const |
Predicate | getSwappedPredicate () const |
For example, EQ->EQ, SLE->SGE, ULT->UGT, OEQ->OEQ, ULE->UGE, OLT->OGT, etc. | |
bool | isStrictPredicate () const |
bool | isNonStrictPredicate () const |
Predicate | getStrictPredicate () const |
For example, SGE -> SGT, SLE -> SLT, ULE -> ULT, UGE -> UGT. | |
Predicate | getNonStrictPredicate () const |
For example, SGT -> SGE, SLT -> SLE, ULT -> ULE, UGT -> UGE. | |
Predicate | getFlippedStrictnessPredicate () const |
For predicate of kind "is X or equal to 0" returns the predicate "is X". | |
DECLARE_TRANSPARENT_OPERAND_ACCESSORS (Value) | |
Provide more efficient getOperand methods. | |
LLVM_ABI void | swapOperands () |
This is just a convenience that dispatches to the subclasses. | |
LLVM_ABI bool | isCommutative () const |
This is just a convenience that dispatches to the subclasses. | |
bool | isEquality () const |
Determine if this is an equals/not equals predicate. | |
LLVM_ABI bool | isEquivalence (bool Invert=false) const |
Determine if one operand of this compare can always be replaced by the other operand, ignoring provenance considerations. | |
bool | isRelational () const |
Return true if the predicate is relational (not EQ or NE). | |
bool | isSigned () const |
bool | isUnsigned () const |
bool | isTrueWhenEqual () const |
This is just a convenience. | |
bool | isFalseWhenEqual () const |
This is just a convenience. | |
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LLVM_ABI 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. | |
LLVM_ABI std::optional< simple_ilist< DbgRecord >::iterator > | getDbgReinsertionPosition () |
Return an iterator to the position of the "Next" DbgRecord after this instruction, or std::nullopt. | |
LLVM_ABI bool | hasDbgRecords () const |
Returns true if any DbgRecords are attached to this instruction. | |
LLVM_ABI 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. | |
LLVM_ABI void | dropDbgRecords () |
Erase any DbgRecords attached to this instruction. | |
LLVM_ABI void | dropOneDbgRecord (DbgRecord *I) |
Erase a single DbgRecord I that is attached to this instruction. | |
LLVM_ABI 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 |
LLVM_ABI 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 () |
LLVM_ABI const Function * | getFunction () const |
Return the function this instruction belongs to. | |
Function * | getFunction () |
LLVM_ABI const DataLayout & | getDataLayout () const |
Get the data layout of the module this instruction belongs to. | |
LLVM_ABI void | removeFromParent () |
This method unlinks 'this' from the containing basic block, but does not delete it. | |
LLVM_ABI InstListType::iterator | eraseFromParent () |
This method unlinks 'this' from the containing basic block and deletes it. | |
LLVM_ABI | LLVM_DEPRECATED ("Use iterators as instruction positions", "") void insertBefore(Instruction *InsertPos) |
Insert an unlinked instruction into a basic block immediately before the specified instruction. | |
LLVM_ABI void | insertBefore (InstListType::iterator InsertPos) |
Insert an unlinked instruction into a basic block immediately before the specified position. | |
LLVM_ABI void | insertAfter (Instruction *InsertPos) |
Insert an unlinked instruction into a basic block immediately after the specified instruction. | |
LLVM_ABI void | insertAfter (InstListType::iterator InsertPos) |
Insert an unlinked instruction into a basic block immediately after the specified position. | |
LLVM_ABI 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. | |
LLVM_ABI void | insertBefore (BasicBlock &BB, InstListType::iterator InsertPos) |
LLVM_ABI | LLVM_DEPRECATED ("Use iterators as instruction positions", "") 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. | |
LLVM_ABI void | moveBefore (InstListType::iterator InsertPos) |
Unlink this instruction from its current basic block and insert it into the basic block that MovePos lives in, right before MovePos. | |
LLVM_ABI void | moveBeforePreserving (InstListType::iterator MovePos) |
Perform a moveBefore operation, while signalling that the caller intends to preserve the original ordering of instructions. | |
LLVM_ABI void | moveBeforePreserving (BasicBlock &BB, InstListType::iterator I) |
Perform a moveBefore operation, while signalling that the caller intends to preserve the original ordering of instructions. | |
LLVM_ABI | LLVM_DEPRECATED ("Use iterators as instruction positions", "") void moveBeforePreserving(Instruction *MovePos) |
Perform a moveBefore operation, while signalling that the caller intends to preserve the original ordering of instructions. | |
LLVM_ABI void | moveBefore (BasicBlock &BB, InstListType::iterator I) |
Unlink this instruction and insert into BB before I. | |
LLVM_ABI 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. | |
LLVM_ABI void | moveAfter (InstListType::iterator MovePos) |
Unlink this instruction from its current basic block and insert it into the basic block that MovePos lives in, right after MovePos. | |
LLVM_ABI void | moveAfterPreserving (Instruction *MovePos) |
See moveBeforePreserving . | |
LLVM_ABI 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. | |
LLVM_ABI 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 |
LLVM_ABI 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. | |
LLVM_ABI 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. | |
LLVM_ABI void | setMetadata (unsigned KindID, MDNode *Node) |
Set the metadata of the specified kind to the specified node. | |
LLVM_ABI void | setMetadata (StringRef Kind, MDNode *Node) |
LLVM_ABI void | copyMetadata (const Instruction &SrcInst, ArrayRef< unsigned > WL=ArrayRef< unsigned >()) |
Copy metadata from SrcInst to this instruction. | |
LLVM_ABI void | eraseMetadataIf (function_ref< bool(unsigned, MDNode *)> Pred) |
Erase all metadata that matches the predicate. | |
LLVM_ABI 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. | |
LLVM_ABI void | addAnnotationMetadata (StringRef Annotation) |
Adds an !annotation metadata node with Annotation to this instruction. | |
LLVM_ABI void | addAnnotationMetadata (SmallVector< StringRef > Annotations) |
Adds an !annotation metadata node with an array of Annotations as a tuple to this instruction. | |
LLVM_ABI AAMDNodes | getAAMetadata () const |
Returns the AA metadata for this instruction. | |
LLVM_ABI void | setAAMetadata (const AAMDNodes &N) |
Sets the AA metadata on this instruction from the AAMDNodes structure. | |
LLVM_ABI void | setNoSanitizeMetadata () |
Sets the nosanitize metadata on this instruction. | |
LLVM_ABI 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. | |
LLVM_ABI 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. | |
LLVM_ABI void | setHasNoUnsignedWrap (bool b=true) |
Set or clear the nuw flag on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setHasNoSignedWrap (bool b=true) |
Set or clear the nsw flag on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setIsExact (bool b=true) |
Set or clear the exact flag on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setNonNeg (bool b=true) |
Set or clear the nneg flag on this instruction, which must be a zext instruction. | |
LLVM_ABI bool | hasNoUnsignedWrap () const LLVM_READONLY |
Determine whether the no unsigned wrap flag is set. | |
LLVM_ABI bool | hasNoSignedWrap () const LLVM_READONLY |
Determine whether the no signed wrap flag is set. | |
LLVM_ABI bool | hasNonNeg () const LLVM_READONLY |
Determine whether the the nneg flag is set. | |
LLVM_ABI 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. | |
LLVM_ABI void | dropPoisonGeneratingFlags () |
Drops flags that may cause this instruction to evaluate to poison despite having non-poison inputs. | |
LLVM_ABI bool | hasPoisonGeneratingMetadata () const LLVM_READONLY |
Return true if this instruction has poison-generating metadata. | |
LLVM_ABI void | dropPoisonGeneratingMetadata () |
Drops metadata that may generate poison. | |
LLVM_ABI bool | hasPoisonGeneratingReturnAttributes () const LLVM_READONLY |
Return true if this instruction has poison-generating attribute. | |
LLVM_ABI 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. | |
LLVM_ABI void | dropUBImplyingAttrsAndUnknownMetadata (ArrayRef< unsigned > KnownIDs={}) |
This function drops non-debug unknown metadata (through dropUnknownNonDebugMetadata). | |
LLVM_ABI void | dropUBImplyingAttrsAndMetadata (ArrayRef< unsigned > Keep={}) |
Drop any attributes or metadata that can cause immediate undefined behavior. | |
LLVM_ABI bool | hasUBImplyingAttrs () const LLVM_READONLY |
Return true if this instruction has UB-implying attributes that can cause immediate undefined behavior. | |
LLVM_ABI bool | isExact () const LLVM_READONLY |
Determine whether the exact flag is set. | |
LLVM_ABI void | setFast (bool B) |
Set or clear all fast-math-flags on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setHasAllowReassoc (bool B) |
Set or clear the reassociation flag on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setHasNoNaNs (bool B) |
Set or clear the no-nans flag on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setHasNoInfs (bool B) |
Set or clear the no-infs flag on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setHasNoSignedZeros (bool B) |
Set or clear the no-signed-zeros flag on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setHasAllowReciprocal (bool B) |
Set or clear the allow-reciprocal flag on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setHasAllowContract (bool B) |
Set or clear the allow-contract flag on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setHasApproxFunc (bool B) |
Set or clear the approximate-math-functions flag on this instruction, which must be an operator which supports this flag. | |
LLVM_ABI void | setFastMathFlags (FastMathFlags FMF) |
Convenience function for setting multiple fast-math flags on this instruction, which must be an operator which supports these flags. | |
LLVM_ABI 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. | |
LLVM_ABI bool | isFast () const LLVM_READONLY |
Determine whether all fast-math-flags are set. | |
LLVM_ABI bool | hasAllowReassoc () const LLVM_READONLY |
Determine whether the allow-reassociation flag is set. | |
LLVM_ABI bool | hasNoNaNs () const LLVM_READONLY |
Determine whether the no-NaNs flag is set. | |
LLVM_ABI bool | hasNoInfs () const LLVM_READONLY |
Determine whether the no-infs flag is set. | |
LLVM_ABI bool | hasNoSignedZeros () const LLVM_READONLY |
Determine whether the no-signed-zeros flag is set. | |
LLVM_ABI bool | hasAllowReciprocal () const LLVM_READONLY |
Determine whether the allow-reciprocal flag is set. | |
LLVM_ABI bool | hasAllowContract () const LLVM_READONLY |
Determine whether the allow-contract flag is set. | |
LLVM_ABI bool | hasApproxFunc () const LLVM_READONLY |
Determine whether the approximate-math-functions flag is set. | |
LLVM_ABI FastMathFlags | getFastMathFlags () const LLVM_READONLY |
Convenience function for getting all the fast-math flags, which must be an operator which supports these flags. | |
LLVM_ABI void | copyFastMathFlags (const Instruction *I) |
Copy I's fast-math flags. | |
LLVM_ABI 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. | |
LLVM_ABI void | andIRFlags (const Value *V) |
Logical 'and' of any supported wrapping, exact, and fast-math flags of V and this instruction. | |
LLVM_ABI void | applyMergedLocation (DebugLoc LocA, DebugLoc LocB) |
Merge 2 debug locations and apply it to the Instruction. | |
LLVM_ABI void | updateLocationAfterHoist () |
Updates the debug location given that the instruction has been hoisted from a block to a predecessor of that block. | |
LLVM_ABI void | dropLocation () |
Drop the instruction's debug location. | |
LLVM_ABI void | mergeDIAssignID (ArrayRef< const Instruction * > SourceInstructions) |
Merge the DIAssignID metadata from this instruction and those attached to instructions in SourceInstructions . | |
LLVM_ABI bool | isAssociative () const LLVM_READONLY |
Return true if the instruction is associative: | |
LLVM_ABI 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: | |
LLVM_ABI bool | mayWriteToMemory () const LLVM_READONLY |
Return true if this instruction may modify memory. | |
LLVM_ABI 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. | |
LLVM_ABI bool | isAtomic () const LLVM_READONLY |
Return true if this instruction has an AtomicOrdering of unordered or higher. | |
LLVM_ABI bool | hasAtomicLoad () const LLVM_READONLY |
Return true if this atomic instruction loads from memory. | |
LLVM_ABI bool | hasAtomicStore () const LLVM_READONLY |
Return true if this atomic instruction stores to memory. | |
LLVM_ABI bool | isVolatile () const LLVM_READONLY |
Return true if this instruction has a volatile memory access. | |
LLVM_ABI Type * | getAccessType () const LLVM_READONLY |
Return the type this instruction accesses in memory, if any. | |
LLVM_ABI 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. | |
LLVM_ABI bool | mayHaveSideEffects () const LLVM_READONLY |
Return true if the instruction may have side effects. | |
LLVM_ABI bool | isSafeToRemove () const LLVM_READONLY |
Return true if the instruction can be removed if the result is unused. | |
LLVM_ABI 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. | |
LLVM_ABI bool | isLifetimeStartOrEnd () const LLVM_READONLY |
Return true if the instruction is a llvm.lifetime.start or llvm.lifetime.end marker. | |
LLVM_ABI bool | isLaunderOrStripInvariantGroup () const LLVM_READONLY |
Return true if the instruction is a llvm.launder.invariant.group or llvm.strip.invariant.group. | |
LLVM_ABI bool | isDebugOrPseudoInst () const LLVM_READONLY |
Return true if the instruction is a DbgInfoIntrinsic or PseudoProbeInst. | |
LLVM_ABI Instruction * | clone () const |
Create a copy of 'this' instruction that is identical in all ways except the following: | |
LLVM_ABI bool | isIdenticalTo (const Instruction *I) const LLVM_READONLY |
Return true if the specified instruction is exactly identical to the current one. | |
LLVM_ABI 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. | |
LLVM_ABI 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. | |
LLVM_ABI 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. | |
LLVM_ABI 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. | |
LLVM_ABI unsigned | getNumSuccessors () const LLVM_READONLY |
Return the number of successors that this instruction has. | |
LLVM_ABI BasicBlock * | getSuccessor (unsigned Idx) const LLVM_READONLY |
Return the specified successor. This instruction must be a terminator. | |
LLVM_ABI void | setSuccessor (unsigned Idx, BasicBlock *BB) |
Update the specified successor to point at the provided block. | |
LLVM_ABI void | replaceSuccessorWith (BasicBlock *OldBB, BasicBlock *NewBB) |
Replace specified successor OldBB to point at the provided block. | |
LLVM_ABI void | dropUnknownNonDebugMetadata (ArrayRef< unsigned > KnownIDs={}) |
Drop all unknown metadata except for debug locations. | |
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User (const User &)=delete | |
LLVM_ABI 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 |
LLVM_ABI ArrayRef< const uint8_t > | getDescriptor () const |
Returns the descriptor co-allocated with this User instance. | |
LLVM_ABI 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. | |
LLVM_ABI 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. | |
LLVM_ABI bool | replaceUsesOfWith (Value *From, Value *To) |
Replace uses of one Value with another. | |
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Value (const Value &)=delete | |
Value & | operator= (const Value &)=delete |
LLVM_ABI void | deleteValue () |
Delete a pointer to a generic Value. | |
LLVM_ABI void | dump () const |
Support for debugging, callable in GDB: V->dump() | |
Type * | getType () const |
All values are typed, get the type of this value. | |
LLVM_ABI LLVMContext & | getContext () const |
All values hold a context through their type. | |
bool | hasName () const |
LLVM_ABI ValueName * | getValueName () const |
LLVM_ABI void | setValueName (ValueName *VN) |
LLVM_ABI StringRef | getName () const |
Return a constant reference to the value's name. | |
LLVM_ABI void | setName (const Twine &Name) |
Change the name of the value. | |
LLVM_ABI void | takeName (Value *V) |
Transfer the name from V to this value. | |
LLVM_ABI std::string | getNameOrAsOperand () const |
LLVM_ABI void | replaceAllUsesWith (Value *V) |
Change all uses of this to point to a new Value. | |
LLVM_ABI void | replaceNonMetadataUsesWith (Value *V) |
Change non-metadata uses of this to point to a new Value. | |
LLVM_ABI 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. | |
LLVM_ABI 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. | |
LLVM_ABI void | assertModuleIsMaterializedImpl () const |
void | assertModuleIsMaterialized () const |
bool | hasUseList () const |
Check if this Value has a use-list. | |
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. | |
LLVM_ABI bool | hasNUses (unsigned N) const |
Return true if this Value has exactly N uses. | |
LLVM_ABI bool | hasNUsesOrMore (unsigned N) const |
Return true if this value has N uses or more. | |
LLVM_ABI bool | hasOneUser () const |
Return true if there is exactly one user of this value. | |
LLVM_ABI Use * | getSingleUndroppableUse () |
Return true if there is exactly one use of this value that cannot be dropped. | |
const Use * | getSingleUndroppableUse () const |
LLVM_ABI 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 |
LLVM_ABI bool | hasNUndroppableUses (unsigned N) const |
Return true if there this value. | |
LLVM_ABI bool | hasNUndroppableUsesOrMore (unsigned N) const |
Return true if this value has N uses or more. | |
LLVM_ABI void | dropDroppableUses (llvm::function_ref< bool(const Use *)> ShouldDrop=[](const Use *) { return true;}) |
Remove every uses that can safely be removed. | |
LLVM_ABI void | dropDroppableUsesIn (User &Usr) |
Remove every use of this value in User that can safely be removed. | |
LLVM_ABI bool | isUsedInBasicBlock (const BasicBlock *BB) const |
Check if this value is used in the specified basic block. | |
LLVM_ABI 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. | |
LLVM_ABI bool | isSwiftError () const |
Return true if this value is a swifterror value. | |
LLVM_ABI const Value * | stripPointerCasts () const |
Strip off pointer casts, all-zero GEPs and address space casts. | |
Value * | stripPointerCasts () |
LLVM_ABI const Value * | stripPointerCastsAndAliases () const |
Strip off pointer casts, all-zero GEPs, address space casts, and aliases. | |
Value * | stripPointerCastsAndAliases () |
LLVM_ABI 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 () |
LLVM_ABI const Value * | stripPointerCastsForAliasAnalysis () const |
Strip off pointer casts, all-zero GEPs, single-argument phi nodes and invariant group info. | |
Value * | stripPointerCastsForAliasAnalysis () |
LLVM_ABI const Value * | stripInBoundsConstantOffsets () const |
Strip off pointer casts and all-constant inbounds GEPs. | |
Value * | stripInBoundsConstantOffsets () |
LLVM_ABI const Value * | stripAndAccumulateConstantOffsets (const DataLayout &DL, APInt &Offset, bool AllowNonInbounds, bool AllowInvariantGroup=false, function_ref< bool(Value &Value, APInt &Offset)> ExternalAnalysis=nullptr, bool LookThroughIntToPtr=false) 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, bool LookThroughIntToPtr=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) |
LLVM_ABI 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 *) {}) |
LLVM_ABI 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. | |
LLVM_ABI 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. | |
LLVM_ABI uint64_t | getPointerDereferenceableBytes (const DataLayout &DL, bool &CanBeNull, bool &CanBeFreed) const |
Returns the number of bytes known to be dereferenceable for the pointer value. | |
LLVM_ABI Align | getPointerAlignment (const DataLayout &DL) const |
Returns an alignment of the pointer value. | |
LLVM_ABI 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. | |
LLVM_ABI void | reverseUseList () |
Reverse the use-list. | |
LLVM_ABI void | print (raw_ostream &O, bool IsForDebug=false) const |
Implement operator<< on Value. | |
LLVM_ABI void | print (raw_ostream &O, ModuleSlotTracker &MST, bool IsForDebug=false) const |
LLVM_ABI 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. | |
LLVM_ABI void | printAsOperand (raw_ostream &O, bool PrintType, ModuleSlotTracker &MST) const |
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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. | |
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self_iterator | getIterator () |
const_self_iterator | getIterator () const |
reverse_self_iterator | getReverseIterator () |
const_reverse_self_iterator | getReverseIterator () const |
std::enable_if_t< T::is_sentinel_tracking_explicit, bool > | isSentinel () const |
Check whether this is the sentinel node. | |
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const ParentTy * | getParent () const |
ParentTy * | getParent () |
void | setParent (ParentTy *Parent) |
Static Public Member Functions | |
static auto | FCmpPredicates () |
Returns the sequence of all FCmp predicates. | |
static auto | ICmpPredicates () |
Returns the sequence of all ICmp predicates. | |
static LLVM_ABI CmpInst * | Create (OtherOps Op, Predicate Pred, Value *S1, Value *S2, const Twine &Name="", InsertPosition InsertBefore=nullptr) |
Construct a compare instruction, given the opcode, the predicate and the two operands. | |
static LLVM_ABI CmpInst * | CreateWithCopiedFlags (OtherOps Op, Predicate Pred, Value *S1, Value *S2, const Instruction *FlagsSource, const Twine &Name="", InsertPosition InsertBefore=nullptr) |
Construct a compare instruction, given the opcode, the predicate, the two operands and the instruction to copy the flags from. | |
static bool | isFPPredicate (Predicate P) |
static bool | isIntPredicate (Predicate P) |
static LLVM_ABI StringRef | getPredicateName (Predicate P) |
static Predicate | getOrderedPredicate (Predicate Pred) |
Returns the ordered variant of a floating point compare. | |
static Predicate | getUnorderedPredicate (Predicate Pred) |
Returns the unordered variant of a floating point compare. | |
static LLVM_ABI Predicate | getInversePredicate (Predicate pred) |
For example, EQ -> NE, UGT -> ULE, SLT -> SGE, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc. | |
static LLVM_ABI Predicate | getSwappedPredicate (Predicate pred) |
This is a static version that you can use without an instruction available. | |
static LLVM_ABI bool | isStrictPredicate (Predicate predicate) |
This is a static version that you can use without an instruction available. | |
static LLVM_ABI bool | isNonStrictPredicate (Predicate predicate) |
This is a static version that you can use without an instruction available. | |
static LLVM_ABI Predicate | getStrictPredicate (Predicate pred) |
This is a static version that you can use without an instruction available. | |
static LLVM_ABI Predicate | getNonStrictPredicate (Predicate pred) |
This is a static version that you can use without an instruction available. | |
static LLVM_ABI Predicate | getFlippedStrictnessPredicate (Predicate pred) |
This is a static version that you can use without an instruction available. | |
static LLVM_ABI bool | isEquality (Predicate pred) |
Determine if this is an equals/not equals predicate. | |
static bool | isRelational (Predicate P) |
Return true if the predicate is relational (not EQ or NE). | |
static LLVM_ABI bool | isUnsigned (Predicate predicate) |
static LLVM_ABI bool | isSigned (Predicate predicate) |
static LLVM_ABI bool | isOrdered (Predicate predicate) |
Determine if the predicate is an ordered operation. | |
static LLVM_ABI bool | isUnordered (Predicate predicate) |
Determine if the predicate is an unordered operation. | |
static LLVM_ABI bool | isTrueWhenEqual (Predicate predicate) |
Determine if the predicate is true when comparing a value with itself. | |
static LLVM_ABI bool | isFalseWhenEqual (Predicate predicate) |
Determine if the predicate is false when comparing a value with itself. | |
static bool | classof (const Instruction *I) |
Methods for support type inquiry through isa, cast, and dyn_cast: | |
static bool | classof (const Value *V) |
static Type * | makeCmpResultType (Type *opnd_type) |
Create a result type for fcmp/icmp. | |
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static LLVM_ABI 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: | |
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static bool | classof (const Value *V) |
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static LLVM_ABI void | dropDroppableUse (Use &U) |
Remove the droppable use U . | |
Protected Member Functions | |
LLVM_ABI | CmpInst (Type *ty, Instruction::OtherOps op, Predicate pred, Value *LHS, Value *RHS, const Twine &Name="", InsertPosition InsertBefore=nullptr, Instruction *FlagsSource=nullptr) |
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LLVM_ABI | ~Instruction () |
template<typename BitfieldElement > | |
BitfieldElement::Type | getSubclassData () const |
template<typename BitfieldElement > | |
void | setSubclassData (typename BitfieldElement::Type Value) |
LLVM_ABI | Instruction (Type *Ty, unsigned iType, AllocInfo AllocInfo, InsertPosition InsertBefore=nullptr) |
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void * | operator new (size_t Size)=delete |
LLVM_ABI void * | operator new (size_t Size, HungOffOperandsAllocMarker) |
Allocate a User with an operand pointer co-allocated. | |
LLVM_ABI void * | operator new (size_t Size, IntrusiveOperandsAllocMarker allocTrait) |
Allocate a User with the operands co-allocated. | |
LLVM_ABI void * | operator new (size_t Size, IntrusiveOperandsAndDescriptorAllocMarker allocTrait) |
Allocate a User with the operands co-allocated. | |
User (Type *ty, unsigned vty, AllocInfo AllocInfo) | |
LLVM_ABI void | allocHungoffUses (unsigned N, bool IsPhi=false) |
Allocate the array of Uses, followed by a pointer (with bottom bit set) to the User. | |
LLVM_ABI 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 |
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LLVM_ABI | Value (Type *Ty, unsigned scid) |
LLVM_ABI | ~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. | |
LLVM_ABI 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. | |
LLVM_ABI bool | eraseMetadata (unsigned KindID) |
Erase all metadata attachments with the given kind. | |
LLVM_ABI void | eraseMetadataIf (function_ref< bool(unsigned, MDNode *)> Pred) |
Erase all metadata attachments matching the given predicate. | |
LLVM_ABI void | clearMetadata () |
Erase all metadata attached to this Value. | |
LLVM_ABI 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. | |
LLVM_ABI MDNode * | getMetadata (StringRef Kind) const |
LLVM_ABI void | getMetadata (unsigned KindID, SmallVectorImpl< MDNode * > &MDs) const |
Appends all attachments with the given ID to MDs in insertion order. | |
LLVM_ABI 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 |
LLVM_ABI void | setMetadata (unsigned KindID, MDNode *Node) |
Set a particular kind of metadata attachment. | |
LLVM_ABI void | setMetadata (StringRef Kind, MDNode *Node) |
LLVM_ABI void | addMetadata (unsigned KindID, MDNode &MD) |
Add a metadata attachment. | |
LLVM_ABI void | addMetadata (StringRef Kind, MDNode &MD) |
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ilist_node_with_parent ()=default | |
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ilist_node_impl ()=default | |
Additional Inherited Members | |
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DbgMarker * | DebugMarker = nullptr |
Optional marker recording the position for debugging information that takes effect immediately before this instruction. | |
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static constexpr unsigned | MaxAlignmentExponent = 32 |
The maximum alignment for instructions. | |
static constexpr uint64_t | MaximumAlignment = 1ULL << MaxAlignmentExponent |
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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 > |
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enum | : unsigned { NumUserOperandsBits = 27 } |
The number of operands in the subclass. More... | |
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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 |
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template<int Idx, typename U > | |
static Use & | OpFrom (const U *that) |
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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 |
This class is the base class for the comparison instructions.
Abstract base class of comparison instructions.
Definition at line 666 of file InstrTypes.h.
using llvm::CmpInst::PredicateField = Bitfield::Element<Predicate, 0, 6, LAST_ICMP_PREDICATE> |
Definition at line 713 of file InstrTypes.h.
enum llvm::CmpInst::Predicate : unsigned |
This enumeration lists the possible predicates for CmpInst subclasses.
Values in the range 0-31 are reserved for FCmpInst, while values in the range 32-64 are reserved for ICmpInst. This is necessary to ensure the predicate values are not overlapping between the classes.
Some passes (e.g. InstCombine) depend on the bit-wise characteristics of FCMP_* values. Changing the bit patterns requires a potential change to those passes.
Definition at line 678 of file InstrTypes.h.
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Definition at line 3497 of file Instructions.cpp.
References llvm::Instruction::copyIRFlags(), LHS, Name, RHS, llvm::Value::setName(), and setPredicate().
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Methods for support type inquiry through isa, cast, and dyn_cast:
Definition at line 975 of file InstrTypes.h.
References I.
Referenced by classof().
Definition at line 979 of file InstrTypes.h.
References classof().
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Construct a compare instruction, given the opcode, the predicate and the two operands.
Optionally (if InstBefore is specified) insert the instruction into a BasicBlock right before the specified instruction. The specified Instruction is allowed to be a dereferenced end iterator. Create a CmpInst
Definition at line 3509 of file Instructions.cpp.
References llvm::InsertPosition::isValid(), Name, and S1.
Referenced by llvm::fuzzerop::cmpOpDescriptor(), CreateWithCopiedFlags(), llvm::InstCombinerImpl::foldICmpIntrinsicWithConstant(), foldICmpInvariantGroup(), llvm::InstCombinerImpl::foldICmpUsingBoolRange(), foldICmpWithHighBitMask(), llvm::InstCombinerImpl::foldICmpWithMinMax(), foldICmpXNegX(), llvm::InstCombinerImpl::foldIRemByPowerOfTwoToBitTest(), llvm::InstCombinerImpl::foldPHIArgBinOpIntoPHI(), llvm::InstCombinerImpl::foldPHIArgOpIntoPHI(), foldReductionIdiom(), llvm::InstCombinerImpl::foldSignBitTest(), sinkCmpExpression(), and llvm::InstCombinerImpl::visitICmpInst().
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Construct a compare instruction, given the opcode, the predicate, the two operands and the instruction to copy the flags from.
Optionally (if InstBefore is specified) insert the instruction into a BasicBlock right before the specified instruction. The specified Instruction is allowed to be a dereferenced end iterator. Create a CmpInst
Definition at line 3528 of file Instructions.cpp.
References llvm::Instruction::copyIRFlags(), Create(), Name, and S1.
Referenced by llvm::InstCombinerImpl::visitExtractElementInst().
llvm::CmpInst::DECLARE_TRANSPARENT_OPERAND_ACCESSORS | ( | Value | ) |
Provide more efficient getOperand methods.
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inlinestatic |
Returns the sequence of all FCmp predicates.
Definition at line 717 of file InstrTypes.h.
References llvm::enum_seq_inclusive(), FIRST_FCMP_PREDICATE, llvm::force_iteration_on_noniterable_enum, and LAST_FCMP_PREDICATE.
Referenced by llvm::FCmpInst::predicates().
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For predicate of kind "is X or equal to 0" returns the predicate "is X".
For predicate of kind "is X" returns the predicate "is X or equal to 0". does not support other kind of predicates.
Definition at line 895 of file InstrTypes.h.
References getFlippedStrictnessPredicate(), and getPredicate().
Referenced by foldICmpAndXX(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpOrConstant(), llvm::Loop::LoopBounds::getCanonicalPredicate(), getFlippedStrictnessPredicate(), and llvm::getFlippedStrictnessPredicateAndConstant().
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This is a static version that you can use without an instruction available.
Return the flipped strictness of predicate
Definition at line 3793 of file Instructions.cpp.
References assert(), getNonStrictPredicate(), getStrictPredicate(), isNonStrictPredicate(), isRelational(), isStrictPredicate(), and llvm_unreachable.
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inline |
For example, EQ -> NE, UGT -> ULE, SLT -> SGE, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
Definition at line 791 of file InstrTypes.h.
References getInversePredicate(), and getPredicate().
Referenced by llvm::VPlanTransforms::addMinimumIterationCheck(), llvm::CombinerHelper::applyNotCmp(), llvm::InstCombinerImpl::canonicalizeICmpPredicate(), canonicalizeSaturatedAdd(), canonicalizeSaturatedSubtract(), llvm::AArch64GISelUtils::changeVectorFCMPPredToAArch64CC(), checkCondition(), checkOrAndOpImpliedByOther(), computeKnownBitsFromOperator(), llvm::EpilogueVectorizerMainLoop::createIterationCountCheck(), detectShiftUntilBitTestIdiom(), detectShiftUntilZeroIdiom(), llvm::SCEVExpander::expandComparePredicate(), llvm::InstCombinerImpl::foldICmpEquality(), llvm::InstCombinerImpl::foldICmpShlConstConst(), llvm::InstCombinerImpl::foldICmpShrConstConst(), llvm::InstCombinerImpl::foldICmpUsingKnownBits(), llvm::InstCombinerImpl::foldICmpWithDominatingICmp(), llvm::InstCombinerImpl::foldICmpWithMinMax(), foldLogOpOfMaskedICmps(), generateKeySubkey(), llvm::Loop::LoopBounds::getCanonicalPredicate(), llvm::ValueLatticeElement::getCompare(), llvm::PredicateBase::getConstraint(), llvm::ConstantRange::getEquivalentPredWithFlippedSignedness(), getHashValueImpl(), getInversePredicate(), getPredicateResult(), getRangeViaSLT(), hoistMinMax(), llvm::GCNTTIImpl::instCombineIntrinsic(), llvm::InvertBranch(), isEqualImpl(), isEquivalence(), isImpliedCondCommonOperandWithCR(), isKnownNonNullFromDominatingCondition(), legalizeFCmpPredicate(), llvm::ConstantRange::makeSatisfyingICmpRegion(), matchFastFloatClamp(), negateICmpIfUsedByBranchOrSelectOnly(), simplifyCmpSelOfMaxMin(), simplifyICmpInst(), simplifyICmpWithMinMax(), llvm::InstCombinerImpl::simplifyRangeCheck(), simplifyRecipe(), simplifySwitchOnSelectUsingRanges(), and llvm::InstCombinerImpl::visitBranchInst().
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For example, EQ -> NE, UGT -> ULE, SLT -> SGE, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
pred
. Return the inverse of a given predicate Definition at line 3589 of file Instructions.cpp.
References FCMP_FALSE, FCMP_OEQ, FCMP_OGE, FCMP_OGT, FCMP_OLE, FCMP_OLT, FCMP_ONE, FCMP_ORD, FCMP_TRUE, FCMP_UEQ, FCMP_UGE, FCMP_UGT, FCMP_ULE, FCMP_ULT, FCMP_UNE, FCMP_UNO, ICMP_EQ, ICMP_NE, ICMP_SGE, ICMP_SGT, ICMP_SLE, ICMP_SLT, ICMP_UGE, ICMP_UGT, ICMP_ULE, ICMP_ULT, and llvm_unreachable.
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For example, SGT -> SGE, SLT -> SLE, ULT -> ULE, UGT -> UGE.
Returns the non-strict version of strict comparisons.
Definition at line 873 of file InstrTypes.h.
References getNonStrictPredicate(), and getPredicate().
Referenced by llvm::InstCombinerImpl::foldICmpWithMinMax(), getFlippedStrictnessPredicate(), getNonStrictPredicate(), processMinMaxIntrinsic(), and llvm::InstCombinerImpl::visitCallInst().
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This is a static version that you can use without an instruction available.
pred
. If pred
is not a strict comparison predicate, returns pred
. Returns the non-strict version of strict comparisons. Definition at line 3770 of file Instructions.cpp.
References FCMP_OGE, FCMP_OGT, FCMP_OLE, FCMP_OLT, FCMP_UGE, FCMP_UGT, FCMP_ULE, FCMP_ULT, ICMP_SGE, ICMP_SGT, ICMP_SLE, ICMP_SLT, ICMP_UGE, ICMP_UGT, ICMP_ULE, and ICMP_ULT.
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Get the opcode casted to the right type.
Definition at line 762 of file InstrTypes.h.
References llvm::Instruction::getOpcode().
Referenced by llvm::InstCombinerImpl::foldPHIArgOpIntoPHI(), and llvm::InstCombinerImpl::visitExtractElementInst().
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Definition at line 802 of file InstrTypes.h.
References getOrderedPredicate(), and getPredicate().
Referenced by getOrderedPredicate(), and matchIsFiniteTest().
Returns the ordered variant of a floating point compare.
For example, UEQ -> OEQ, ULT -> OLT, OEQ -> OEQ
Definition at line 798 of file InstrTypes.h.
References FCMP_ORD.
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Return the predicate for this instruction.
Definition at line 767 of file InstrTypes.h.
Referenced by CanGenerateTest(), canonicalizeSaturatedSubtract(), checkOrAndOpImpliedByOther(), llvm::ICmpInst::cloneImpl(), llvm::FCmpInst::cloneImpl(), computeUnlikelySuccessors(), llvm::InstCombinerImpl::foldCmpLoadFromIndexedGlobal(), foldFCmpToFPClassTest(), llvm::InstCombinerImpl::foldICmpWithCastOp(), llvm::InstCombinerImpl::foldICmpWithTrunc(), llvm::InstCombinerImpl::foldICmpWithZextOrSext(), foldIsPowerOf2(), llvm::InstCombinerImpl::foldPHIArgOpIntoPHI(), foldSelectICmpLshrAshr(), foldSignedTruncationCheck(), getBranchCondString(), getBranchWeights(), llvm::Loop::LoopBounds::getCanonicalPredicate(), getFlippedStrictnessPredicate(), getInversePredicate(), getNonStrictPredicate(), getOrderedPredicate(), getSalvageOpsForIcmpOp(), getStrictPredicate(), getSwappedPredicate(), getUnorderedPredicate(), handleBrSelExpect(), isCmpSameOrSwapped(), llvm::FCmpInst::isCommutative(), isEqualImpl(), isEquality(), llvm::FCmpInst::isEquality(), isEquivalence(), isFalseWhenEqual(), isFPPredicate(), isIntPredicate(), isNonStrictPredicate(), isSigned(), isStrictPredicate(), isTrueWhenEqual(), isUnsigned(), llvm::matchDecomposedSelectPattern(), negateICmpIfUsedByBranchOrSelectOnly(), llvm::FastISel::optimizeCmpPredicate(), OptimizeGlobalAddressOfAllocation(), llvm::LoopStructure::parseLoopStructure(), llvm::IRSimilarity::IRInstructionData::predicateForConsistency(), llvm::InstCombinerImpl::replacedSelectWithOperand(), reuseTableCompare(), simplifyAndOrOfICmpsWithConstants(), llvm::InstCombinerImpl::simplifyRangeCheck(), sinkMinMaxInBB(), and llvm::JumpThreadingPass::tryToUnfoldSelect().
Definition at line 3622 of file Instructions.cpp.
References FCMP_FALSE, FCMP_OEQ, FCMP_OGE, FCMP_OGT, FCMP_OLE, FCMP_OLT, FCMP_ONE, FCMP_ORD, FCMP_TRUE, FCMP_UEQ, FCMP_UGE, FCMP_UGT, FCMP_ULE, FCMP_ULT, FCMP_UNE, FCMP_UNO, ICMP_EQ, ICMP_NE, ICMP_SGE, ICMP_SGT, ICMP_SLE, ICMP_SLT, ICMP_UGE, ICMP_UGT, ICMP_ULE, and ICMP_ULT.
Referenced by llvm::operator<<(), and llvm::VPIRFlags::printFlags().
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For example, SGE -> SGT, SLE -> SLT, ULE -> ULT, UGE -> UGT.
Returns the strict version of non-strict comparisons.
Definition at line 860 of file InstrTypes.h.
References getPredicate(), and getStrictPredicate().
Referenced by llvm::InstCombinerImpl::foldICmpWithMinMax(), foldICmpXorXX(), getFlippedStrictnessPredicate(), getStrictPredicate(), and simplifyCmpSelOfMaxMin().
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This is a static version that you can use without an instruction available.
pred
. If pred
is not a strict comparison predicate, returns pred
. Returns the strict version of non-strict comparisons. Definition at line 3747 of file Instructions.cpp.
References FCMP_OGE, FCMP_OGT, FCMP_OLE, FCMP_OLT, FCMP_UGE, FCMP_UGT, FCMP_ULE, FCMP_ULT, ICMP_SGE, ICMP_SGT, ICMP_SLE, ICMP_SLT, ICMP_UGE, ICMP_UGT, ICMP_ULE, and ICMP_ULT.
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For example, EQ->EQ, SLE->SGE, ULT->UGT, OEQ->OEQ, ULE->UGE, OLT->OGT, etc.
Definition at line 829 of file InstrTypes.h.
References getPredicate(), and getSwappedPredicate().
Referenced by llvm::analyzeICmp(), canonicalizeSaturatedAdd(), canonicalizeSaturatedSubtract(), compareCmp(), extractEquivalentCondition(), foldAbsDiff(), foldICmpAndXX(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpCommutative(), llvm::InstCombinerImpl::foldICmpDivConstant(), llvm::InstCombinerImpl::foldICmpMulConstant(), foldICmpOrXX(), foldICmpWithDominatingICmp(), foldICmpXNegX(), foldICmpXorXX(), foldSelectICmpMinMax(), generateKeySubkey(), llvm::Loop::LoopBounds::getCanonicalPredicate(), llvm::ScalarEvolution::getMonotonicPredicateType(), getOperandsForBranch(), llvm::LazyValueInfo::getPredicateAt(), getSameOpcode(), llvm::CmpPredicate::getSwapped(), getSwappedPredicate(), hoistAddSub(), hoistMinMax(), hoistSub(), llvm::GCNTTIImpl::instCombineIntrinsic(), isAlternateInstruction(), isCmpSameOrSwapped(), isSameCompare(), legalizeFCmpPredicate(), llvm::MIPatternMatch::CompareOp_match< Pred_P, LHS_P, RHS_P, Opcode, Commutable >::match(), llvm::CombinerHelper::matchCanonicalizeFCmp(), llvm::CombinerHelper::matchCanonicalizeICmp(), llvm::CombinerHelper::matchSelectIMinMax(), matchSelectPattern(), llvm::InstCombinerImpl::matchThreeWayIntCompare(), llvm::LoopStructure::parseLoopStructure(), llvm::IRSimilarity::IRInstructionData::predicateForConsistency(), simplifyFCmpInst(), simplifyICmpInst(), simplifyICmpWithMinMax(), llvm::InstCombinerImpl::simplifyRangeCheck(), llvm::FCmpInst::swapOperands(), threadCmpOverPHI(), threadCmpOverSelect(), llvm::InstCombinerImpl::visitCallInst(), and llvm::InstCombinerImpl::visitFCmpInst().
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This is a static version that you can use without an instruction available.
Return the predicate as if the operands were swapped.
Definition at line 3685 of file Instructions.cpp.
References FCMP_FALSE, FCMP_OEQ, FCMP_OGE, FCMP_OGT, FCMP_OLE, FCMP_OLT, FCMP_ONE, FCMP_ORD, FCMP_TRUE, FCMP_UEQ, FCMP_UGE, FCMP_UGT, FCMP_ULE, FCMP_ULT, FCMP_UNE, FCMP_UNO, ICMP_EQ, ICMP_NE, ICMP_SGE, ICMP_SGT, ICMP_SLE, ICMP_SLT, ICMP_UGE, ICMP_UGT, ICMP_ULE, ICMP_ULT, and llvm_unreachable.
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Definition at line 813 of file InstrTypes.h.
References getPredicate(), and getUnorderedPredicate().
Referenced by getUnorderedPredicate().
Returns the unordered variant of a floating point compare.
For example, OEQ -> UEQ, OLT -> ULT, OEQ -> UEQ
Definition at line 809 of file InstrTypes.h.
References FCMP_UNO.
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Returns the sequence of all ICmp predicates.
Definition at line 724 of file InstrTypes.h.
References llvm::enum_seq_inclusive(), FIRST_ICMP_PREDICATE, llvm::force_iteration_on_noniterable_enum, and LAST_ICMP_PREDICATE.
bool CmpInst::isCommutative | ( | ) | const |
This is just a convenience that dispatches to the subclasses.
Determine if this CmpInst is commutative.
Definition at line 3545 of file Instructions.cpp.
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Determine if this is an equals/not equals predicate.
Definition at line 917 of file InstrTypes.h.
References getPredicate(), and isEquality().
Referenced by llvm::ICmpInst::getFlippedSignednessPredicate(), llvm::AArch64GISelUtils::isCMN(), isEquality(), isRelational(), llvm::CombinerHelper::matchICmpToLHSKnownBits(), llvm::CombinerHelper::matchRedundantBinOpInEquality(), and llvm::CombinerHelper::matchSelectIMinMax().
Determine if this is an equals/not equals predicate.
This is a static version that you can use without an instruction available.
Definition at line 3551 of file Instructions.cpp.
References llvm::ICmpInst::isEquality(), llvm::FCmpInst::isEquality(), isFPPredicate(), isIntPredicate(), llvm_unreachable, and P.
Referenced by llvm::matchDecomposedSelectPattern(), and llvm::InstCombinerImpl::visitPHINode().
Determine if one operand of this compare can always be replaced by the other operand, ignoring provenance considerations.
If Invert
, check for equivalence with the inverse predicate.
Definition at line 3574 of file Instructions.cpp.
References FCMP_OEQ, FCMP_UEQ, getInversePredicate(), getPredicate(), llvm::Instruction::hasNoNaNs(), hasNonZeroFPOperands(), and ICMP_EQ.
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This is just a convenience.
Determine if this is false when both operands are the same.
Definition at line 950 of file InstrTypes.h.
References getPredicate(), and isFalseWhenEqual().
Referenced by computePointerICmp(), isFalseWhenEqual(), simplifyFCmpInst(), and llvm::ScalarEvolution::SimplifyICmpOperands().
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Definition at line 784 of file InstrTypes.h.
References getPredicate(), and isFPPredicate().
Referenced by llvm::MachineIRBuilder::buildInstr(), llvm::ConstantFoldCompareInstOperands(), llvm::IRBuilderBase::CreateCmp(), foldSelectBinOpIdentity(), llvm::RISCVTTIImpl::getCmpSelInstrCost(), llvm::CmpPredicate::getMatching(), llvm::GCNTTIImpl::instCombineIntrinsic(), isEquality(), isFPPredicate(), lowerFCMPIntrinsic(), llvm::CombinerHelper::matchCanonicalizeFCmp(), matchSelectPattern(), and simplifyFCmpInst().
Definition at line 772 of file InstrTypes.h.
References FIRST_FCMP_PREDICATE, LAST_FCMP_PREDICATE, and P.
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Definition at line 785 of file InstrTypes.h.
References getPredicate(), and isIntPredicate().
Referenced by llvm::MachineIRBuilder::buildInstr(), canonicalizeCmpWithConstant(), llvm::CmpPredicate::CmpPredicate(), llvm::ICmpInst::compare(), llvm::AArch64TTIImpl::getCmpSelInstrCost(), llvm::RISCVTTIImpl::getCmpSelInstrCost(), llvm::ConstantRange::getEquivalentPredWithFlippedSignedness(), isEquality(), isIntPredicate(), llvm::ARMLegalizerInfo::legalizeCustom(), lowerICMPIntrinsic(), llvm::CombinerHelper::matchCanonicalizeICmp(), matchMinMaxOfMinMax(), matchSelectPattern(), llvm::MachineOperand::print(), simplifyCmpInst(), and simplifyICmpInst().
Definition at line 778 of file InstrTypes.h.
References FIRST_ICMP_PREDICATE, LAST_ICMP_PREDICATE, and P.
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Definition at line 854 of file InstrTypes.h.
References getPredicate(), and isNonStrictPredicate().
Referenced by getFlippedStrictnessPredicate(), and isNonStrictPredicate().
Determine if the predicate is an ordered operation.
Definition at line 3930 of file Instructions.cpp.
References FCMP_OEQ, FCMP_OGE, FCMP_OGT, FCMP_OLE, FCMP_OLT, FCMP_ONE, and FCMP_ORD.
Referenced by llvm::GenericFloatingPointPredicateUtils< ContextT >::fcmpImpliesClass(), llvm::ConstantFPRange::makeAllowedFCmpRegion(), llvm::ConstantFPRange::makeSatisfyingFCmpRegion(), and matchSelectPattern().
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Return true if the predicate is relational (not EQ or NE).
Definition at line 928 of file InstrTypes.h.
References isEquality().
Referenced by llvm::ConstantRange::getEquivalentPredWithFlippedSignedness(), and getFlippedStrictnessPredicate().
Return true if the predicate is relational (not EQ or NE).
Definition at line 925 of file InstrTypes.h.
References isEquality(), and P.
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Definition at line 932 of file InstrTypes.h.
References getPredicate(), and isSigned().
Referenced by llvm::calculateUpperBound(), computePointerICmp(), llvm::InstCombinerImpl::foldGEPICmp(), foldICmpAndXX(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpIntrinsicWithConstant(), llvm::InstCombinerImpl::foldICmpMulConstant(), foldICmpWithLowBitMaskedVal(), llvm::InstCombinerImpl::foldICmpWithMinMax(), llvm::InstCombinerImpl::foldICmpWithZextOrSext(), foldICmpXNegX(), generateReproducer(), llvm::ICmpInst::getFlippedSignednessPredicate(), llvm::ScalarEvolution::getLoopInvariantExitCondDuringFirstIterationsImpl(), getSalvageOpsForIcmpOp(), hoistAdd(), hoistMinMax(), hoistSub(), llvm::GCNTTIImpl::instCombineIntrinsic(), llvm::AArch64GISelUtils::isCMN(), isImpliedTrueByMatchingCmp(), IsKnownPredicateViaAddRecStart(), isSigned(), llvm::MinMaxIntrinsic::isSigned(), lookThroughCastConst(), lowerICMPIntrinsic(), llvm::LoopStructure::parseLoopStructure(), llvm::predicatesFoldable(), simplifyICmpWithBinOp(), simplifyICmpWithConstant(), llvm::splitLoopBound(), llvm::InstCombinerImpl::visitAdd(), llvm::InstCombinerImpl::visitICmpInst(), llvm::InstCombinerImpl::visitOr(), and llvm::LegalizerHelper::widenScalar().
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Definition at line 845 of file InstrTypes.h.
References getPredicate(), and isStrictPredicate().
Referenced by llvm::InstCombinerImpl::foldICmpShlConstant(), getFlippedStrictnessPredicate(), and isStrictPredicate().
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This is just a convenience.
Determine if this is true when both operands are the same.
Definition at line 944 of file InstrTypes.h.
References getPredicate(), and isTrueWhenEqual().
Referenced by computePointerICmp(), llvm::ConstantFoldCompareInstruction(), llvm::InstCombinerImpl::foldGEPICmp(), isTrueWhenEqual(), simplifyFCmpInst(), simplifyICmpInst(), and llvm::ScalarEvolution::SimplifyICmpOperands().
Determine if the predicate is an unordered operation.
Definition at line 3939 of file Instructions.cpp.
References FCMP_UEQ, FCMP_UGE, FCMP_UGT, FCMP_ULE, FCMP_ULT, FCMP_UNE, and FCMP_UNO.
Referenced by llvm::ConstantFoldCompareInstruction(), llvm::GenericFloatingPointPredicateUtils< ContextT >::fcmpImpliesClass(), llvm::ConstantFPRange::makeAllowedFCmpRegion(), llvm::ConstantFPRange::makeSatisfyingFCmpRegion(), matchUnorderedInfCompare(), setNaNField(), and simplifyFCmpInst().
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Definition at line 938 of file InstrTypes.h.
References getPredicate(), and isUnsigned().
Referenced by canonicalizeSaturatedSubtract(), llvm::InstCombinerImpl::foldGEPICmp(), llvm::InstCombinerImpl::foldICmpAddConstant(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpCommutative(), llvm::InstCombinerImpl::foldICmpMulConstant(), foldICmpPow2Test(), llvm::InstCombinerImpl::foldICmpWithMinMax(), foldICmpXNegX(), llvm::AArch64TTIImpl::getCmpSelInstrCost(), llvm::ICmpInst::getFlippedSignednessPredicate(), isUnsigned(), lookThroughCastConst(), simplifyICmpWithBinOp(), and llvm::InstCombinerImpl::visitICmpInst().
Create a result type for fcmp/icmp.
Definition at line 984 of file InstrTypes.h.
References llvm::VectorType::get(), llvm::Type::getContext(), and llvm::Type::getInt1Ty().
Referenced by checkAndReplaceCondition(), llvm::VPInstruction::computeCost(), costAndCollectOperands(), llvm::InstCombinerImpl::foldGEPICmp(), llvm::ARMTTIImpl::getCmpSelInstrCost(), getCompareTy(), llvm::VPRecipeWithIRFlags::getCostForRecipeWithOpcode(), llvm::LoopVectorizationCostModel::getInstructionCost(), llvm::getPredForFCmpCode(), llvm::getPredForICmpCode(), llvm::LazyValueInfo::getPredicateAt(), getPredicateResult(), llvm::BasicTTIImplBase< T >::getTreeReductionCost(), validateAndCostRequiredSelects(), and llvm::InstCombinerImpl::visitMul().
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Definition at line 739 of file InstrTypes.h.
References Ptr.
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Definition at line 738 of file InstrTypes.h.
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Set the predicate for this instruction to the specified value.
Definition at line 770 of file InstrTypes.h.
References P.
Referenced by CmpInst(), hoistAdd(), hoistSub(), llvm::InvertBranch(), llvm::InstModificationIRStrategy::mutate(), negateICmpIfUsedByBranchOrSelectOnly(), and llvm::FCmpInst::swapOperands().
void CmpInst::swapOperands | ( | ) |
This is just a convenience that dispatches to the subclasses.
Swap the operands and adjust predicate accordingly to retain the same comparison.
Definition at line 3538 of file Instructions.cpp.