LLVM 18.0.0git
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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 } |
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 |
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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. | |
void | swapOperands () |
This is just a convenience that dispatches to the subclasses. | |
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. | |
bool | isRelational () const |
Return true if the predicate is relational (not EQ or NE). | |
bool | isSigned () const |
bool | isUnsigned () const |
Predicate | getSignedPredicate () |
For example, ULT->SLT, ULE->SLE, UGT->SGT, UGE->SGE, SLT->Failed assert. | |
Predicate | getUnsignedPredicate () |
For example, SLT->ULT, SLE->ULE, SGT->UGT, SGE->UGE, ULT->Failed assert. | |
Predicate | getFlippedSignednessPredicate () |
For example, SLT->ULT, ULT->SLT, SLE->ULE, ULE->SLE, EQ->Failed assert. | |
bool | isTrueWhenEqual () const |
This is just a convenience. | |
bool | isFalseWhenEqual () const |
This is just a convenience. | |
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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 BasicBlock * | getParent () const |
BasicBlock * | getParent () |
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 () |
void | removeFromParent () |
This method unlinks 'this' from the containing basic block, but does not delete it. | |
SymbolTableList< Instruction >::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 (SymbolTableList< Instruction >::iterator InsertPos) |
void | insertAfter (Instruction *InsertPos) |
Insert an unlinked instruction into a basic block immediately after the specified instruction. | |
SymbolTableList< Instruction >::iterator | insertInto (BasicBlock *ParentBB, SymbolTableList< Instruction >::iterator It) |
Inserts an unlinked instruction into ParentBB at position It and returns the iterator of the inserted instruction. | |
void | insertBefore (BasicBlock &BB, SymbolTableList< Instruction >::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, SymbolTableList< Instruction >::iterator I) |
Unlink this instruction and insert into BB before I. | |
void | moveBeforePreserving (BasicBlock &BB, SymbolTableList< Instruction >::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. | |
Instruction * | getInsertionPointAfterDef () |
Get the first insertion point at which the result of this instruction is defined. | |
unsigned | getOpcode () const |
Returns a member of one of the enums like Instruction::Add. | |
const char * | getOpcodeName () const |
bool | isTerminator () const |
bool | isUnaryOp () const |
bool | isBinaryOp () const |
bool | isIntDivRem () const |
bool | isShift () const |
bool | isCast () const |
bool | isFuncletPad () const |
bool | isSpecialTerminator () const |
bool | isOnlyUserOfAnyOperand () |
It checks if this instruction is the only user of at least one of its operands. | |
bool | isLogicalShift () const |
Return true if this is a logical shift left or a logical shift right. | |
bool | isArithmeticShift () const |
Return true if this is an arithmetic shift right. | |
bool | isBitwiseLogicOp () const |
Return true if this is and/or/xor. | |
bool | hasMetadata () const |
Return true if this instruction has any metadata attached to it. | |
bool | hasMetadataOtherThanDebugLoc () const |
Return true if this instruction has metadata attached to it other than a debug location. | |
bool | hasMetadata (unsigned KindID) const |
Return true if this instruction has the given type of metadata attached. | |
bool | hasMetadata (StringRef Kind) const |
Return true if this instruction has the given type of metadata attached. | |
MDNode * | getMetadata (unsigned KindID) const |
Get the metadata of given kind attached to this Instruction. | |
MDNode * | getMetadata (StringRef Kind) const |
Get the metadata of given kind attached to this Instruction. | |
void | getAllMetadata (SmallVectorImpl< std::pair< unsigned, MDNode * > > &MDs) const |
Get all metadata attached to this Instruction. | |
void | getAllMetadataOtherThanDebugLoc (SmallVectorImpl< std::pair< unsigned, MDNode * > > &MDs) const |
This does the same thing as getAllMetadata, except that it filters out the debug location. | |
void | setMetadata (unsigned KindID, MDNode *Node) |
Set the metadata of the specified kind to the specified node. | |
void | setMetadata (StringRef Kind, MDNode *Node) |
void | copyMetadata (const Instruction &SrcInst, ArrayRef< unsigned > WL=ArrayRef< unsigned >()) |
Copy metadata from SrcInst to this instruction. | |
void | 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. | |
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 | 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 | hasPoisonGeneratingFlagsOrMetadata () const |
Return true if this instruction has poison-generating flags or metadata. | |
void | dropPoisonGeneratingFlagsAndMetadata () |
Drops flags and metadata that may generate poison. | |
void | dropUBImplyingAttrsAndUnknownMetadata (ArrayRef< unsigned > KnownIDs={}) |
This function drops non-debug unknown metadata (through dropUnknownNonDebugMetadata). | |
void | dropUBImplyingAttrsAndMetadata () |
Drop any attributes or metadata that can cause immediate undefined behavior. | |
bool | isExact () const LLVM_READONLY |
Determine whether the exact flag is set. | |
void | setFast (bool B) |
Set or clear all fast-math-flags on this instruction, which must be an operator which supports this flag. | |
void | setHasAllowReassoc (bool B) |
Set or clear the reassociation flag on this instruction, which must be an operator which supports this flag. | |
void | setHasNoNaNs (bool B) |
Set or clear the no-nans flag on this instruction, which must be an operator which supports this flag. | |
void | setHasNoInfs (bool B) |
Set or clear the no-infs flag on this instruction, which must be an operator which supports this flag. | |
void | setHasNoSignedZeros (bool B) |
Set or clear the no-signed-zeros flag on this instruction, which must be an operator which supports this flag. | |
void | setHasAllowReciprocal (bool B) |
Set or clear the allow-reciprocal flag on this instruction, which must be an operator which supports this flag. | |
void | setHasAllowContract (bool B) |
Set or clear the allow-contract flag on this instruction, which must be an operator which supports this flag. | |
void | setHasApproxFunc (bool B) |
Set or clear the approximate-math-functions flag on this instruction, which must be an operator which supports this flag. | |
void | setFastMathFlags (FastMathFlags FMF) |
Convenience function for setting multiple fast-math flags on this instruction, which must be an operator which supports these flags. | |
void | copyFastMathFlags (FastMathFlags FMF) |
Convenience function for transferring all fast-math flag values to this instruction, which must be an operator which supports these flags. | |
bool | isFast () const LLVM_READONLY |
Determine whether all fast-math-flags are set. | |
bool | hasAllowReassoc () const LLVM_READONLY |
Determine whether the allow-reassociation flag is set. | |
bool | hasNoNaNs () const LLVM_READONLY |
Determine whether the no-NaNs flag is set. | |
bool | hasNoInfs () const LLVM_READONLY |
Determine whether the no-infs flag is set. | |
bool | hasNoSignedZeros () const LLVM_READONLY |
Determine whether the no-signed-zeros flag is set. | |
bool | hasAllowReciprocal () const LLVM_READONLY |
Determine whether the allow-reciprocal flag is set. | |
bool | hasAllowContract () const LLVM_READONLY |
Determine whether the allow-contract flag is set. | |
bool | hasApproxFunc () const LLVM_READONLY |
Determine whether the approximate-math-functions flag is set. | |
FastMathFlags | getFastMathFlags () const LLVM_READONLY |
Convenience function for getting all the fast-math flags, which must be an operator which supports these flags. | |
void | copyFastMathFlags (const Instruction *I) |
Copy I's fast-math flags. | |
void | copyIRFlags (const Value *V, bool IncludeWrapFlags=true) |
Convenience method to copy supported exact, fast-math, and (optionally) wrapping flags from V to this instruction. | |
void | andIRFlags (const Value *V) |
Logical 'and' of any supported wrapping, exact, and fast-math flags of V and this instruction. | |
void | applyMergedLocation (DILocation *LocA, DILocation *LocB) |
Merge 2 debug locations and apply it to the Instruction. | |
void | updateLocationAfterHoist () |
Updates the debug location given that the instruction has been hoisted from a block to a predecessor of that block. | |
void | dropLocation () |
Drop the instruction's debug location. | |
void | mergeDIAssignID (ArrayRef< const Instruction * > SourceInstructions) |
Merge the DIAssignID metadata from this instruction and those attached to instructions in SourceInstructions . | |
bool | isAssociative () const LLVM_READONLY |
Return true if the instruction is associative: | |
bool | isCommutative () const LLVM_READONLY |
Return true if the instruction is commutative: | |
bool | isIdempotent () const |
Return true if the instruction is idempotent: | |
bool | isNilpotent () const |
Return true if the instruction is nilpotent: | |
bool | mayWriteToMemory () const LLVM_READONLY |
Return true if this instruction may modify memory. | |
bool | mayReadFromMemory () const LLVM_READONLY |
Return true if this instruction may read memory. | |
bool | mayReadOrWriteMemory () const |
Return true if this instruction may read or write memory. | |
bool | isAtomic () const LLVM_READONLY |
Return true if this instruction has an AtomicOrdering of unordered or higher. | |
bool | hasAtomicLoad () const LLVM_READONLY |
Return true if this atomic instruction loads from memory. | |
bool | hasAtomicStore () const LLVM_READONLY |
Return true if this atomic instruction stores to memory. | |
bool | isVolatile () const LLVM_READONLY |
Return true if this instruction has a volatile memory access. | |
Type * | getAccessType () const LLVM_READONLY |
Return the type this instruction accesses in memory, if any. | |
bool | mayThrow (bool IncludePhaseOneUnwind=false) const LLVM_READONLY |
Return true if this instruction may throw an exception. | |
bool | isFenceLike () const |
Return true if this instruction behaves like a memory fence: it can load or store to memory location without being given a memory location. | |
bool | mayHaveSideEffects () const LLVM_READONLY |
Return true if the instruction may have side effects. | |
bool | isSafeToRemove () const LLVM_READONLY |
Return true if the instruction can be removed if the result is unused. | |
bool | willReturn () const LLVM_READONLY |
Return true if the instruction will return (unwinding is considered as a form of returning control flow here). | |
bool | isEHPad () const |
Return true if the instruction is a variety of EH-block. | |
bool | isLifetimeStartOrEnd () const LLVM_READONLY |
Return true if the instruction is a llvm.lifetime.start or llvm.lifetime.end marker. | |
bool | isLaunderOrStripInvariantGroup () const LLVM_READONLY |
Return true if the instruction is a llvm.launder.invariant.group or llvm.strip.invariant.group. | |
bool | isDebugOrPseudoInst () const LLVM_READONLY |
Return true if the instruction is a DbgInfoIntrinsic or PseudoProbeInst. | |
const Instruction * | getNextNonDebugInstruction (bool SkipPseudoOp=false) const |
Return a pointer to the next non-debug instruction in the same basic block as 'this', or nullptr if no such instruction exists. | |
Instruction * | getNextNonDebugInstruction (bool SkipPseudoOp=false) |
const Instruction * | getPrevNonDebugInstruction (bool SkipPseudoOp=false) const |
Return a pointer to the previous non-debug instruction in the same basic block as 'this', or nullptr if no such instruction exists. | |
Instruction * | getPrevNonDebugInstruction (bool SkipPseudoOp=false) |
Instruction * | clone () const |
Create a copy of 'this' instruction that is identical in all ways except the following: | |
bool | isIdenticalTo (const Instruction *I) const LLVM_READONLY |
Return true if the specified instruction is exactly identical to the current one. | |
bool | isIdenticalToWhenDefined (const Instruction *I) const LLVM_READONLY |
This is like isIdenticalTo, except that it ignores the SubclassOptionalData flags, which may specify conditions under which the instruction's result is undefined. | |
bool | isSameOperationAs (const Instruction *I, unsigned flags=0) const LLVM_READONLY |
This function determines if the specified instruction executes the same operation as the current one. | |
bool | hasSameSpecialState (const Instruction *I2, bool IgnoreAlignment=false) const LLVM_READONLY |
This function determines if the speficied instruction has the same "special" characteristics as the current one. | |
bool | isUsedOutsideOfBlock (const BasicBlock *BB) const LLVM_READONLY |
Return true if there are any uses of this instruction in blocks other than the specified block. | |
unsigned | getNumSuccessors () const LLVM_READONLY |
Return the number of successors that this instruction has. | |
BasicBlock * | getSuccessor (unsigned Idx) const LLVM_READONLY |
Return the specified successor. This instruction must be a terminator. | |
void | setSuccessor (unsigned Idx, BasicBlock *BB) |
Update the specified successor to point at the provided block. | |
void | replaceSuccessorWith (BasicBlock *OldBB, BasicBlock *NewBB) |
Replace specified successor OldBB to point at the provided block. | |
void | dropUnknownNonDebugMetadata (ArrayRef< unsigned > KnownIDs) |
Drop all unknown metadata except for debug locations. | |
void | dropUnknownNonDebugMetadata () |
void | dropUnknownNonDebugMetadata (unsigned ID1) |
void | dropUnknownNonDebugMetadata (unsigned ID1, unsigned ID2) |
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User (const User &)=delete | |
void | operator delete (void *Usr) |
Free memory allocated for User and Use objects. | |
void | operator delete (void *Usr, unsigned) |
Placement delete - required by std, called if the ctor throws. | |
void | operator delete (void *Usr, unsigned, unsigned) |
Placement delete - required by std, called if the ctor throws. | |
const Use * | getOperandList () const |
Use * | getOperandList () |
Value * | getOperand (unsigned i) const |
void | setOperand (unsigned i, Value *Val) |
const Use & | getOperandUse (unsigned i) const |
Use & | getOperandUse (unsigned i) |
unsigned | getNumOperands () const |
ArrayRef< const uint8_t > | getDescriptor () const |
Returns the descriptor co-allocated with this User instance. | |
MutableArrayRef< uint8_t > | getDescriptor () |
Returns the descriptor co-allocated with this User instance. | |
void | setGlobalVariableNumOperands (unsigned NumOps) |
Set the number of operands on a GlobalVariable. | |
void | setNumHungOffUseOperands (unsigned NumOps) |
Subclasses with hung off uses need to manage the operand count themselves. | |
bool | isDroppable () const |
A droppable user is a user for which uses can be dropped without affecting correctness and should be dropped rather than preventing a transformation from happening. | |
op_iterator | op_begin () |
const_op_iterator | op_begin () const |
op_iterator | op_end () |
const_op_iterator | op_end () const |
op_range | operands () |
const_op_range | operands () const |
value_op_iterator | value_op_begin () |
value_op_iterator | value_op_end () |
iterator_range< value_op_iterator > | operand_values () |
const_value_op_iterator | value_op_begin () const |
const_value_op_iterator | value_op_end () const |
iterator_range< const_value_op_iterator > | operand_values () const |
void | dropAllReferences () |
Drop all references to operands. | |
bool | replaceUsesOfWith (Value *From, Value *To) |
Replace uses of one Value with another. | |
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Value (const Value &)=delete | |
Value & | operator= (const Value &)=delete |
void | deleteValue () |
Delete a pointer to a generic Value. | |
void | dump () const |
Support for debugging, callable in GDB: V->dump() | |
Type * | getType () const |
All values are typed, get the type of this value. | |
LLVMContext & | getContext () const |
All values hold a context through their type. | |
bool | hasName () const |
ValueName * | getValueName () const |
void | setValueName (ValueName *VN) |
StringRef | getName () const |
Return a constant reference to the value's name. | |
void | setName (const Twine &Name) |
Change the name of the value. | |
void | takeName (Value *V) |
Transfer the name from V to this value. | |
std::string | getNameOrAsOperand () const |
void | replaceAllUsesWith (Value *V) |
Change all uses of this to point to a new Value. | |
void | replaceNonMetadataUsesWith (Value *V) |
Change non-metadata uses of this to point to a new Value. | |
void | replaceUsesWithIf (Value *New, llvm::function_ref< bool(Use &U)> ShouldReplace) |
Go through the uses list for this definition and make each use point to "V" if the callback ShouldReplace returns true for the given Use. | |
void | replaceUsesOutsideBlock (Value *V, BasicBlock *BB) |
replaceUsesOutsideBlock - Go through the uses list for this definition and make each use point to "V" instead of "this" when the use is outside the block. | |
void | assertModuleIsMaterializedImpl () const |
void | assertModuleIsMaterialized () const |
bool | use_empty () const |
bool | materialized_use_empty () const |
use_iterator | materialized_use_begin () |
const_use_iterator | materialized_use_begin () const |
use_iterator | use_begin () |
const_use_iterator | use_begin () const |
use_iterator | use_end () |
const_use_iterator | use_end () const |
iterator_range< use_iterator > | materialized_uses () |
iterator_range< const_use_iterator > | materialized_uses () const |
iterator_range< use_iterator > | uses () |
iterator_range< const_use_iterator > | uses () const |
bool | user_empty () const |
user_iterator | materialized_user_begin () |
const_user_iterator | materialized_user_begin () const |
user_iterator | user_begin () |
const_user_iterator | user_begin () const |
user_iterator | user_end () |
const_user_iterator | user_end () const |
User * | user_back () |
const User * | user_back () const |
iterator_range< user_iterator > | materialized_users () |
iterator_range< const_user_iterator > | materialized_users () const |
iterator_range< user_iterator > | users () |
iterator_range< const_user_iterator > | users () const |
bool | hasOneUse () const |
Return true if there is exactly one use of this value. | |
bool | hasNUses (unsigned N) const |
Return true if this Value has exactly N uses. | |
bool | hasNUsesOrMore (unsigned N) const |
Return true if this value has N uses or more. | |
bool | hasOneUser () const |
Return true if there is exactly one user of this value. | |
Use * | getSingleUndroppableUse () |
Return true if there is exactly one use of this value that cannot be dropped. | |
const Use * | getSingleUndroppableUse () const |
User * | getUniqueUndroppableUser () |
Return true if there is exactly one unique user of this value that cannot be dropped (that user can have multiple uses of this value). | |
const User * | getUniqueUndroppableUser () const |
bool | hasNUndroppableUses (unsigned N) const |
Return true if there this value. | |
bool | hasNUndroppableUsesOrMore (unsigned N) const |
Return true if this value has N uses or more. | |
void | dropDroppableUses (llvm::function_ref< bool(const Use *)> ShouldDrop=[](const Use *) { return true;}) |
Remove every uses that can safely be removed. | |
void | dropDroppableUsesIn (User &Usr) |
Remove every use of this value in User that can safely be removed. | |
bool | isUsedInBasicBlock (const BasicBlock *BB) const |
Check if this value is used in the specified basic block. | |
unsigned | getNumUses () const |
This method computes the number of uses of this Value. | |
void | addUse (Use &U) |
This method should only be used by the Use class. | |
unsigned | getValueID () const |
Return an ID for the concrete type of this object. | |
unsigned | getRawSubclassOptionalData () const |
Return the raw optional flags value contained in this value. | |
void | clearSubclassOptionalData () |
Clear the optional flags contained in this value. | |
bool | hasSameSubclassOptionalData (const Value *V) const |
Check the optional flags for equality. | |
bool | hasValueHandle () const |
Return true if there is a value handle associated with this value. | |
bool | isUsedByMetadata () const |
Return true if there is metadata referencing this value. | |
bool | isSwiftError () const |
Return true if this value is a swifterror value. | |
const Value * | stripPointerCasts () const |
Strip off pointer casts, all-zero GEPs and address space casts. | |
Value * | stripPointerCasts () |
const Value * | stripPointerCastsAndAliases () const |
Strip off pointer casts, all-zero GEPs, address space casts, and aliases. | |
Value * | stripPointerCastsAndAliases () |
const Value * | stripPointerCastsSameRepresentation () const |
Strip off pointer casts, all-zero GEPs and address space casts but ensures the representation of the result stays the same. | |
Value * | stripPointerCastsSameRepresentation () |
const Value * | stripPointerCastsForAliasAnalysis () const |
Strip off pointer casts, all-zero GEPs, single-argument phi nodes and invariant group info. | |
Value * | stripPointerCastsForAliasAnalysis () |
const Value * | stripInBoundsConstantOffsets () const |
Strip off pointer casts and all-constant inbounds GEPs. | |
Value * | stripInBoundsConstantOffsets () |
const Value * | stripAndAccumulateConstantOffsets (const DataLayout &DL, APInt &Offset, bool AllowNonInbounds, bool AllowInvariantGroup=false, function_ref< bool(Value &Value, APInt &Offset)> ExternalAnalysis=nullptr) const |
Accumulate the constant offset this value has compared to a base pointer. | |
Value * | stripAndAccumulateConstantOffsets (const DataLayout &DL, APInt &Offset, bool AllowNonInbounds, bool AllowInvariantGroup=false) |
const Value * | stripAndAccumulateInBoundsConstantOffsets (const DataLayout &DL, APInt &Offset) const |
This is a wrapper around stripAndAccumulateConstantOffsets with the in-bounds requirement set to false. | |
Value * | stripAndAccumulateInBoundsConstantOffsets (const DataLayout &DL, APInt &Offset) |
const Value * | stripInBoundsOffsets (function_ref< void(const Value *)> Func=[](const Value *) {}) const |
Strip off pointer casts and inbounds GEPs. | |
Value * | stripInBoundsOffsets (function_ref< void(const Value *)> Func=[](const Value *) {}) |
std::optional< int64_t > | getPointerOffsetFrom (const Value *Other, const DataLayout &DL) const |
If this ptr is provably equal to Other plus a constant offset, return that offset in bytes. | |
bool | canBeFreed () const |
Return true if the memory object referred to by V can by freed in the scope for which the SSA value defining the allocation is statically defined. | |
uint64_t | getPointerDereferenceableBytes (const DataLayout &DL, bool &CanBeNull, bool &CanBeFreed) const |
Returns the number of bytes known to be dereferenceable for the pointer value. | |
Align | getPointerAlignment (const DataLayout &DL) const |
Returns an alignment of the pointer value. | |
const Value * | DoPHITranslation (const BasicBlock *CurBB, const BasicBlock *PredBB) const |
Translate PHI node to its predecessor from the given basic block. | |
Value * | DoPHITranslation (const BasicBlock *CurBB, const BasicBlock *PredBB) |
void | mutateType (Type *Ty) |
Mutate the type of this Value to be of the specified type. | |
template<class Compare > | |
void | sortUseList (Compare Cmp) |
Sort the use-list. | |
void | reverseUseList () |
Reverse the use-list. | |
void | print (raw_ostream &O, bool IsForDebug=false) const |
Implement operator<< on Value. | |
void | print (raw_ostream &O, ModuleSlotTracker &MST, bool IsForDebug=false) const |
void | printAsOperand (raw_ostream &O, bool PrintType=true, const Module *M=nullptr) const |
Print the name of this Value out to the specified raw_ostream. | |
void | printAsOperand (raw_ostream &O, bool PrintType, ModuleSlotTracker &MST) const |
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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 |
bool | isSentinel () const |
Check whether this is the sentinel node. | |
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 CmpInst * | Create (OtherOps Op, Predicate predicate, Value *S1, Value *S2, const Twine &Name="", Instruction *InsertBefore=nullptr) |
Construct a compare instruction, given the opcode, the predicate and the two operands. | |
static CmpInst * | Create (OtherOps Op, Predicate predicate, Value *S1, Value *S2, const Twine &Name, BasicBlock *InsertAtEnd) |
Construct a compare instruction, given the opcode, the predicate and the two operands. | |
static bool | isFPPredicate (Predicate P) |
static bool | isIntPredicate (Predicate P) |
static 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 Predicate | getInversePredicate (Predicate pred) |
For example, EQ -> NE, UGT -> ULE, SLT -> SGE, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc. | |
static Predicate | getSwappedPredicate (Predicate pred) |
This is a static version that you can use without an instruction available. | |
static bool | isStrictPredicate (Predicate predicate) |
This is a static version that you can use without an instruction available. | |
static bool | isNonStrictPredicate (Predicate predicate) |
This is a static version that you can use without an instruction available. | |
static Predicate | getStrictPredicate (Predicate pred) |
This is a static version that you can use without an instruction available. | |
static Predicate | getNonStrictPredicate (Predicate pred) |
This is a static version that you can use without an instruction available. | |
static Predicate | getFlippedStrictnessPredicate (Predicate pred) |
This is a static version that you can use without an instruction available. | |
static 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 Predicate | getSignedPredicate (Predicate pred) |
For example, ULT->SLT, ULE->SLE, UGT->SGT, UGE->SGE, SLT->Failed assert. | |
static Predicate | getUnsignedPredicate (Predicate pred) |
For example, SLT->ULT, SLE->ULE, SGT->UGT, SGE->UGE, ULT->Failed assert. | |
static Predicate | getFlippedSignednessPredicate (Predicate pred) |
For example, SLT->ULT, ULT->SLT, SLE->ULE, ULE->SLE, EQ->Failed assert. | |
static bool | isUnsigned (Predicate predicate) |
static bool | isSigned (Predicate predicate) |
static bool | isOrdered (Predicate predicate) |
Determine if the predicate is an ordered operation. | |
static bool | isUnordered (Predicate predicate) |
Determine if the predicate is an unordered operation. | |
static bool | isTrueWhenEqual (Predicate predicate) |
Determine if the predicate is true when comparing a value with itself. | |
static bool | isFalseWhenEqual (Predicate predicate) |
Determine if the predicate is false when comparing a value with itself. | |
static bool | isImpliedTrueByMatchingCmp (Predicate Pred1, Predicate Pred2) |
Determine if Pred1 implies Pred2 is true when two compares have matching operands. | |
static bool | isImpliedFalseByMatchingCmp (Predicate Pred1, Predicate Pred2) |
Determine if Pred1 implies Pred2 is false when two compares have matching operands. | |
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 const char * | getOpcodeName (unsigned Opcode) |
static bool | isTerminator (unsigned Opcode) |
static bool | isUnaryOp (unsigned Opcode) |
static bool | isBinaryOp (unsigned Opcode) |
static bool | isIntDivRem (unsigned Opcode) |
static bool | isShift (unsigned Opcode) |
Determine if the Opcode is one of the shift instructions. | |
static bool | isBitwiseLogicOp (unsigned Opcode) |
Determine if the Opcode is and/or/xor. | |
static bool | isCast (unsigned Opcode) |
Determine if the Opcode is one of the CastInst instructions. | |
static bool | isFuncletPad (unsigned Opcode) |
Determine if the Opcode is one of the FuncletPadInst instructions. | |
static bool | isSpecialTerminator (unsigned Opcode) |
Returns true if the Opcode is a "special" terminator that does more than branch to a successor (e.g. | |
static bool | isAssociative (unsigned Opcode) |
static bool | isCommutative (unsigned Opcode) |
static bool | isIdempotent (unsigned Opcode) |
static bool | isNilpotent (unsigned Opcode) |
static bool | classof (const Value *V) |
Methods for support type inquiry through isa, cast, and dyn_cast: | |
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static bool | classof (const Value *V) |
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static void | dropDroppableUse (Use &U) |
Remove the droppable use U . | |
Protected Member Functions | |
CmpInst (Type *ty, Instruction::OtherOps op, Predicate pred, Value *LHS, Value *RHS, const Twine &Name="", Instruction *InsertBefore=nullptr, Instruction *FlagsSource=nullptr) | |
CmpInst (Type *ty, Instruction::OtherOps op, Predicate pred, Value *LHS, Value *RHS, const Twine &Name, BasicBlock *InsertAtEnd) | |
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~Instruction () | |
template<typename BitfieldElement > | |
BitfieldElement::Type | getSubclassData () const |
template<typename BitfieldElement > | |
void | setSubclassData (typename BitfieldElement::Type Value) |
Instruction (Type *Ty, unsigned iType, Use *Ops, unsigned NumOps, Instruction *InsertBefore=nullptr) | |
Instruction (Type *Ty, unsigned iType, Use *Ops, unsigned NumOps, BasicBlock *InsertAtEnd) | |
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void * | operator new (size_t Size) |
Allocate a User with an operand pointer co-allocated. | |
void * | operator new (size_t Size, unsigned Us) |
Allocate a User with the operands co-allocated. | |
void * | operator new (size_t Size, unsigned Us, unsigned DescBytes) |
Allocate a User with the operands co-allocated. | |
User (Type *ty, unsigned vty, Use *, unsigned NumOps) | |
void | allocHungoffUses (unsigned N, bool IsPhi=false) |
Allocate the array of Uses, followed by a pointer (with bottom bit set) to the User. | |
void | growHungoffUses (unsigned N, bool IsPhi=false) |
Grow the number of hung off uses. | |
~User ()=default | |
template<int Idx> | |
Use & | Op () |
template<int Idx> | |
const Use & | Op () const |
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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 | clearMetadata () |
Erase all metadata attached to this Value. | |
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) |
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ilist_node_with_parent ()=default | |
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ilist_node_impl ()=default | |
This class is the base class for the comparison instructions.
Abstract base class of comparison instructions.
Definition at line 701 of file InstrTypes.h.
using llvm::CmpInst::PredicateField = Bitfield::Element<Predicate, 0, 6, LAST_ICMP_PREDICATE> |
Definition at line 746 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 711 of file InstrTypes.h.
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Definition at line 3942 of file Instructions.cpp.
References llvm::Instruction::copyIRFlags(), LHS, Name, RHS, llvm::Value::setName(), and setPredicate().
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Definition at line 3957 of file Instructions.cpp.
References 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 1049 of file InstrTypes.h.
References I.
Referenced by classof().
Definition at line 1053 of file InstrTypes.h.
References classof().
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Construct a compare instruction, given the opcode, the predicate and the two operands.
Also automatically insert this instruction to the end of the BasicBlock specified. Create a CmpInst
Definition at line 3990 of file Instructions.cpp.
References Name.
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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 3970 of file Instructions.cpp.
References Name.
Referenced by llvm::fuzzerop::cmpOpDescriptor(), llvm::InstCombinerImpl::foldICmpIntrinsicWithConstant(), foldICmpInvariantGroup(), foldICmpWithHighBitMask(), llvm::InstCombinerImpl::foldICmpWithMinMaxImpl(), foldICmpXNegX(), llvm::InstCombinerImpl::foldIRemByPowerOfTwoToBitTest(), llvm::InstCombinerImpl::foldPHIArgBinOpIntoPHI(), llvm::InstCombinerImpl::foldPHIArgOpIntoPHI(), foldReductionIdiom(), llvm::InstCombinerImpl::foldSignBitTest(), llvm::ConstantExpr::getAsInstruction(), sinkCmpExpression(), llvm::InstCombinerImpl::visitExtractElementInst(), and llvm::InstCombinerImpl::visitICmpInst().
llvm::CmpInst::DECLARE_TRANSPARENT_OPERAND_ACCESSORS | ( | Value | ) |
Provide more efficient getOperand methods.
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Returns the sequence of all FCmp predicates.
Definition at line 750 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 example, SLT->ULT, ULT->SLT, SLE->ULE, ULE->SLE, EQ->Failed assert.
Definition at line 1004 of file InstrTypes.h.
References getFlippedSignednessPredicate(), and getPredicate().
Referenced by llvm::ConstantRange::getEquivalentPredWithFlippedSignedness(), getFlippedSignednessPredicate(), and llvm::ScalarEvolution::getLoopInvariantPredicate().
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For example, SLT->ULT, ULT->SLT, SLE->ULE, ULE->SLE, EQ->Failed assert.
Definition at line 4356 of file Instructions.cpp.
References assert(), getSignedPredicate(), getUnsignedPredicate(), isRelational(), isSigned(), isUnsigned(), llvm_unreachable, and pred.
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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 929 of file InstrTypes.h.
References getFlippedStrictnessPredicate(), and getPredicate().
Referenced by llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpOrConstant(), llvm::Loop::LoopBounds::getCanonicalPredicate(), getFlippedStrictnessPredicate(), and llvm::InstCombiner::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 4225 of file Instructions.cpp.
References assert(), getNonStrictPredicate(), getStrictPredicate(), isNonStrictPredicate(), isRelational(), isStrictPredicate(), llvm_unreachable, and pred.
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For example, EQ -> NE, UGT -> ULE, SLT -> SGE, OEQ -> UNE, UGT -> OLE, OLT -> UGE, etc.
Definition at line 825 of file InstrTypes.h.
References getInversePredicate(), and getPredicate().
Referenced by llvm::CombinerHelper::applyNotCmp(), llvm::InstCombinerImpl::canonicalizeICmpPredicate(), canonicalizeSaturatedAdd(), canonicalizeSaturatedSubtract(), llvm::AArch64GISelUtils::changeVectorFCMPPredToAArch64CC(), computeKnownBitsFromOperator(), llvm::ConstantFoldBinaryInstruction(), createReplacement(), detectShiftUntilBitTestIdiom(), detectShiftUntilZeroIdiom(), llvm::ScalarEvolution::evaluatePredicate(), llvm::ScalarEvolution::evaluatePredicateAt(), llvm::SCEVExpander::expandComparePredicate(), llvm::InstCombinerImpl::foldICmpEquality(), llvm::InstCombinerImpl::foldICmpShlConstConst(), llvm::InstCombinerImpl::foldICmpShrConstConst(), llvm::InstCombinerImpl::foldICmpUsingKnownBits(), llvm::InstCombinerImpl::foldICmpWithDominatingICmp(), llvm::InstCombinerImpl::foldICmpWithMinMaxImpl(), foldLogOpOfMaskedICmps(), generateKeySubkey(), llvm::Loop::LoopBounds::getCanonicalPredicate(), llvm::ValueLatticeElement::getCompare(), llvm::PredicateBase::getConstraint(), llvm::ConstantRange::getEquivalentPredWithFlippedSignedness(), getHashValueImpl(), getInversePredicate(), llvm::ScalarEvolution::getLoopInvariantPredicate(), getValueFromICmpCondition(), hoistMinMax(), llvm::GCNTTIImpl::instCombineIntrinsic(), llvm::InvertBranch(), isEqualImpl(), isImpliedFalseByMatchingCmp(), isKnownNonNullFromDominatingCondition(), llvm::ConstantRange::makeSatisfyingICmpRegion(), matchFastFloatClamp(), negateICmpIfUsedByBranchOrSelectOnly(), simplifyCmpSelOfMaxMin(), simplifyICmpInst(), simplifyICmpWithMinMax(), llvm::InstCombinerImpl::simplifyRangeCheck(), 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 4021 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, llvm_unreachable, and pred.
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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 907 of file InstrTypes.h.
References getNonStrictPredicate(), and getPredicate().
Referenced by llvm::InstCombinerImpl::foldICmpWithMinMaxImpl(), getFlippedStrictnessPredicate(), getNonStrictPredicate(), llvm::ScalarEvolution::isBasicBlockEntryGuardedByCond(), and processMinMaxIntrinsic().
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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 4202 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, ICMP_ULT, and pred.
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Get the opcode casted to the right type.
Definition at line 796 of file InstrTypes.h.
References llvm::Instruction::getOpcode().
Referenced by llvm::InstCombinerImpl::foldPHIArgOpIntoPHI().
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Definition at line 836 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 832 of file InstrTypes.h.
References FCMP_ORD.
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Return the predicate for this instruction.
Definition at line 801 of file InstrTypes.h.
Referenced by CanGenerateTest(), canonicalizeSaturatedSubtract(), llvm::ICmpInst::cloneImpl(), llvm::FCmpInst::cloneImpl(), computeUnlikelySuccessors(), createReplacement(), llvm::InstCombinerImpl::foldCmpLoadFromIndexedGlobal(), llvm::InstCombinerImpl::foldICmpWithCastOp(), llvm::InstCombinerImpl::foldICmpWithTrunc(), llvm::InstCombinerImpl::foldICmpWithZextOrSext(), foldIsPowerOf2(), llvm::InstCombinerImpl::foldPHIArgOpIntoPHI(), foldPowerOf2AndShiftedMask(), foldSelectICmpAndBinOp(), foldSelectICmpLshrAshr(), foldSignedTruncationCheck(), getBranchCondString(), GetBranchWeights(), llvm::Loop::LoopBounds::getCanonicalPredicate(), getFlippedSignednessPredicate(), getFlippedStrictnessPredicate(), getInversePredicate(), getNonStrictPredicate(), getOrderedPredicate(), getSalvageOpsForIcmpOp(), getSignedPredicate(), getStrictPredicate(), getSwappedPredicate(), getUnorderedPredicate(), getUnsignedPredicate(), getValueFromICmpCondition(), handleBrSelExpect(), isCmpSameOrSwapped(), llvm::FCmpInst::isCommutative(), isEqualImpl(), isEquality(), llvm::FCmpInst::isEquality(), isFalseWhenEqual(), isFPPredicate(), isIntPredicate(), isNonStrictPredicate(), isSigned(), isStrictPredicate(), isTrueWhenEqual(), isUnsigned(), llvm::matchDecomposedSelectPattern(), negateICmpIfUsedByBranchOrSelectOnly(), llvm::FastISel::optimizeCmpPredicate(), OptimizeGlobalAddressOfAllocation(), llvm::IRSimilarity::IRInstructionData::predicateForConsistency(), llvm::InstCombinerImpl::replacedSelectWithOperand(), reuseTableCompare(), simplifyAndOrOfICmpsWithConstants(), simplifyAndOrOfICmpsWithLimitConst(), simplifyAndOrOfICmpsWithZero(), simplifyInstructionWithPHI(), llvm::InstCombinerImpl::simplifyRangeCheck(), sinkMinMaxInBB(), and llvm::JumpThreadingPass::tryToUnfoldSelect().
Definition at line 4054 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 checkCondition(), llvm::operator<<(), and llvm::VPRecipeWithIRFlags::printFlags().
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For example, ULT->SLT, ULE->SLE, UGT->SGT, UGE->SGE, SLT->Failed assert.
Definition at line 980 of file InstrTypes.h.
References getPredicate(), and getSignedPredicate().
Referenced by getFlippedSignednessPredicate(), and getSignedPredicate().
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For example, ULT->SLT, ULE->SLE, UGT->SGT, UGE->SGE, SLT->Failed assert.
Definition at line 4236 of file Instructions.cpp.
References assert(), ICMP_SGE, ICMP_SGT, ICMP_SLE, ICMP_SLT, ICMP_UGE, ICMP_UGT, ICMP_ULE, ICMP_ULT, isUnsigned(), llvm_unreachable, and pred.
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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 894 of file InstrTypes.h.
References getPredicate(), and getStrictPredicate().
Referenced by llvm::InstCombinerImpl::foldICmpWithMinMaxImpl(), 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 4179 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, ICMP_ULT, and pred.
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For example, EQ->EQ, SLE->SGE, ULT->UGT, OEQ->OEQ, ULE->UGE, OLT->OGT, etc.
Definition at line 863 of file InstrTypes.h.
References getPredicate(), and getSwappedPredicate().
Referenced by llvm::analyzeICmp(), llvm::ScalarEvolution::applyLoopGuards(), canonicalizeSaturatedAdd(), canonicalizeSaturatedSubtract(), compareCmp(), extractEquivalentCondition(), foldAbsDiff(), llvm::InstCombinerImpl::foldGEPICmp(), foldICmpAndXX(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpDivConstant(), llvm::InstCombinerImpl::foldICmpMulConstant(), foldICmpOrXX(), foldICmpWithDominatingICmp(), llvm::InstCombinerImpl::foldICmpWithMinMax(), foldICmpXNegX(), foldICmpXorXX(), llvm::InstCombinerImpl::foldSelectOpOp(), generateKeySubkey(), llvm::Loop::LoopBounds::getCanonicalPredicate(), llvm::ScalarEvolution::getLoopInvariantExitCondDuringFirstIterationsImpl(), llvm::ScalarEvolution::getLoopInvariantPredicate(), llvm::ScalarEvolution::getMonotonicPredicateType(), llvm::LazyValueInfo::getPredicateAt(), getSameOpcode(), getSwappedPredicate(), getValueFromICmpCondition(), hoistAddSub(), hoistMinMax(), hoistSub(), llvm::GCNTTIImpl::instCombineIntrinsic(), isAlternateInstruction(), isCmpSameOrSwapped(), isImpliedCondMatchingOperands(), isSameCompare(), llvm::MIPatternMatch::CompareOp_match< Pred_P, LHS_P, RHS_P, Opcode, Commutable >::match(), matchClamp(), matchMinMaxOfMinMax(), matchSelectPattern(), llvm::InstCombinerImpl::matchThreeWayIntCompare(), llvm::IRSimilarity::IRInstructionData::predicateForConsistency(), simplifyFCmpInst(), simplifyICmpInst(), llvm::ScalarEvolution::SimplifyICmpOperands(), simplifyICmpWithMinMax(), llvm::InstCombinerImpl::simplifyRangeCheck(), llvm::FCmpInst::swapOperands(), threadCmpOverPHI(), and threadCmpOverSelect().
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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 4117 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, llvm_unreachable, and pred.
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Definition at line 847 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 843 of file InstrTypes.h.
References FCMP_UNO.
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For example, SLT->ULT, SLE->ULE, SGT->UGT, SGE->UGE, ULT->Failed assert.
Definition at line 992 of file InstrTypes.h.
References getPredicate(), and getUnsignedPredicate().
Referenced by getFlippedSignednessPredicate(), and getUnsignedPredicate().
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For example, SLT->ULT, SLE->ULE, SGT->UGT, SGE->UGE, ULT->Failed assert.
Definition at line 4253 of file Instructions.cpp.
References assert(), ICMP_SGE, ICMP_SGT, ICMP_SLE, ICMP_SLT, ICMP_UGE, ICMP_UGT, ICMP_ULE, ICMP_ULT, isSigned(), llvm_unreachable, and pred.
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Returns the sequence of all ICmp predicates.
Definition at line 757 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 4007 of file Instructions.cpp.
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Determine if this is an equals/not equals predicate.
Definition at line 951 of file InstrTypes.h.
References getPredicate(), and isEquality().
Referenced by llvm::InstCombinerImpl::foldGEPICmp(), llvm::AArch64GISelUtils::isCMN(), isEquality(), isRelational(), llvm::CombinerHelper::matchICmpToLHSKnownBits(), and llvm::CombinerHelper::matchRedundantBinOpInEquality().
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 4013 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().
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This is just a convenience.
Determine if this is false when both operands are the same.
Definition at line 1016 of file InstrTypes.h.
References getPredicate(), and isFalseWhenEqual().
Referenced by computePointerICmp(), isFalseWhenEqual(), simplifyFCmpInst(), and llvm::ScalarEvolution::SimplifyICmpOperands().
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Definition at line 818 of file InstrTypes.h.
References getPredicate(), and isFPPredicate().
Referenced by llvm::MachineIRBuilder::buildInstr(), llvm::IRBuilderBase::CreateCmp(), foldSelectBinOpIdentity(), llvm::ConstantExpr::getFCmp(), llvm::GCNTTIImpl::instCombineIntrinsic(), isEquality(), isFPPredicate(), lowerFCMPIntrinsic(), matchSelectPattern(), and simplifyFCmpInst().
Definition at line 806 of file InstrTypes.h.
References FIRST_FCMP_PREDICATE, LAST_FCMP_PREDICATE, and P.
Determine if Pred1 implies Pred2 is false when two compares have matching operands.
Definition at line 4427 of file Instructions.cpp.
References getInversePredicate(), and isImpliedTrueByMatchingCmp().
Referenced by isImpliedCondMatchingOperands().
Determine if Pred1 implies Pred2 is true when two compares have matching operands.
Definition at line 4402 of file Instructions.cpp.
References ICMP_EQ, ICMP_NE, ICMP_SGE, ICMP_SGT, ICMP_SLE, ICMP_SLT, ICMP_UGE, ICMP_UGT, ICMP_ULE, and ICMP_ULT.
Referenced by isImpliedCondMatchingOperands(), and isImpliedFalseByMatchingCmp().
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Definition at line 819 of file InstrTypes.h.
References getPredicate(), and isIntPredicate().
Referenced by llvm::MachineIRBuilder::buildInstr(), canonicalizeCmpWithConstant(), llvm::ICmpInst::compare(), llvm::AArch64TTIImpl::getCmpSelInstrCost(), llvm::RISCVTTIImpl::getCmpSelInstrCost(), llvm::ConstantRange::getEquivalentPredWithFlippedSignedness(), llvm::InstCombiner::getFlippedStrictnessPredicateAndConstant(), llvm::ConstantExpr::getICmp(), isEquality(), isIntPredicate(), llvm::ARMLegalizerInfo::legalizeCustom(), lowerICMPIntrinsic(), matchMinMaxOfMinMax(), matchSelectPattern(), llvm::MachineOperand::print(), simplifyCmpInst(), and simplifyICmpInst().
Definition at line 812 of file InstrTypes.h.
References FIRST_ICMP_PREDICATE, LAST_ICMP_PREDICATE, and P.
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Definition at line 888 of file InstrTypes.h.
References getPredicate(), and isNonStrictPredicate().
Referenced by getFlippedStrictnessPredicate(), and isNonStrictPredicate().
Determine if the predicate is an ordered operation.
Definition at line 4368 of file Instructions.cpp.
References FCMP_OEQ, FCMP_OGE, FCMP_OGT, FCMP_OLE, FCMP_OLT, FCMP_ONE, and FCMP_ORD.
Referenced by matchSelectPattern().
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Return true if the predicate is relational (not EQ or NE).
Definition at line 957 of file InstrTypes.h.
References isEquality().
Referenced by llvm::ConstantRange::getEquivalentPredWithFlippedSignedness(), getFlippedSignednessPredicate(), and getFlippedStrictnessPredicate().
Return true if the predicate is relational (not EQ or NE).
Definition at line 954 of file InstrTypes.h.
References isEquality(), and P.
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Definition at line 961 of file InstrTypes.h.
References getPredicate(), and isSigned().
Referenced by llvm::calculateUpperBound(), llvm::ConstantFoldCompareInstruction(), llvm::InstCombinerImpl::foldGEPICmp(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpIntrinsicWithConstant(), llvm::InstCombinerImpl::foldICmpMulConstant(), llvm::InstCombinerImpl::foldICmpWithMinMaxImpl(), llvm::InstCombinerImpl::foldICmpWithZextOrSext(), foldICmpXNegX(), generateReproducer(), getFlippedSignednessPredicate(), llvm::InstCombiner::getFlippedStrictnessPredicateAndConstant(), llvm::ScalarEvolution::getLoopInvariantExitCondDuringFirstIterationsImpl(), getSalvageOpsForIcmpOp(), getUnsignedPredicate(), hoistAdd(), hoistAddSub(), hoistMinMax(), hoistSub(), llvm::GCNTTIImpl::instCombineIntrinsic(), IsKnownPredicateViaAddRecStart(), isSigned(), llvm::MinMaxIntrinsic::isSigned(), lookThroughCast(), lowerICMPIntrinsic(), llvm::predicatesFoldable(), simplifyICmpWithBinOp(), simplifyICmpWithConstant(), llvm::splitLoopBound(), and llvm::LegalizerHelper::widenScalar().
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Definition at line 879 of file InstrTypes.h.
References getPredicate(), and isStrictPredicate().
Referenced by 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 1010 of file InstrTypes.h.
References getPredicate(), and isTrueWhenEqual().
Referenced by computePointerICmp(), llvm::ConstantFoldCompareInstruction(), llvm::InstCombinerImpl::foldGEPICmp(), isTruePredicate(), isTrueWhenEqual(), simplifyFCmpInst(), simplifyICmpInst(), and llvm::ScalarEvolution::SimplifyICmpOperands().
Determine if the predicate is an unordered operation.
Definition at line 4377 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::fcmpToClassTest(), matchUnorderedInfCompare(), and simplifyFCmpInst().
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Definition at line 967 of file InstrTypes.h.
References getPredicate(), and isUnsigned().
Referenced by canonicalizeSaturatedSubtract(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpMulConstant(), foldICmpPow2Test(), llvm::InstCombinerImpl::foldICmpWithMinMaxImpl(), foldICmpXNegX(), foldUnsignedUnderflowCheck(), getFlippedSignednessPredicate(), getSignedPredicate(), isUnsigned(), lookThroughCast(), and simplifyICmpWithBinOp().
Create a result type for fcmp/icmp.
Definition at line 1058 of file InstrTypes.h.
References llvm::VectorType::get(), llvm::Type::getContext(), and llvm::Type::getInt1Ty().
Referenced by checkAndReplaceCondition(), constantFoldCmp(), costAndCollectOperands(), llvm::InstCombinerImpl::foldGEPICmp(), llvm::ARMTTIImpl::getCmpSelInstrCost(), getCompareTy(), llvm::getPredForFCmpCode(), llvm::getPredForICmpCode(), llvm::LazyValueInfo::getPredicateAt(), llvm::BasicTTIImplBase< T >::getTreeReductionCost(), llvm::InstCombinerImpl::visitCallInst(), and llvm::InstCombinerImpl::visitMul().
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Definition at line 776 of file InstrTypes.h.
References Ptr.
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Definition at line 775 of file InstrTypes.h.
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Set the predicate for this instruction to the specified value.
Definition at line 804 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 4000 of file Instructions.cpp.