LLVM 19.0.0git
Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
llvm::KnownBits Struct Reference

#include "llvm/Support/KnownBits.h"

Public Member Functions

 KnownBits ()=default
 
 KnownBits (unsigned BitWidth)
 Create a known bits object of BitWidth bits initialized to unknown.
 
unsigned getBitWidth () const
 Get the bit width of this value.
 
bool hasConflict () const
 Returns true if there is conflicting information.
 
bool isConstant () const
 Returns true if we know the value of all bits.
 
const APIntgetConstant () const
 Returns the value when all bits have a known value.
 
bool isUnknown () const
 Returns true if we don't know any bits.
 
bool isSignUnknown () const
 Returns true if we don't know the sign bit.
 
void resetAll ()
 Resets the known state of all bits.
 
bool isZero () const
 Returns true if value is all zero.
 
bool isAllOnes () const
 Returns true if value is all one bits.
 
void setAllZero ()
 Make all bits known to be zero and discard any previous information.
 
void setAllOnes ()
 Make all bits known to be one and discard any previous information.
 
bool isNegative () const
 Returns true if this value is known to be negative.
 
bool isNonNegative () const
 Returns true if this value is known to be non-negative.
 
bool isNonZero () const
 Returns true if this value is known to be non-zero.
 
bool isStrictlyPositive () const
 Returns true if this value is known to be positive.
 
void makeNegative ()
 Make this value negative.
 
void makeNonNegative ()
 Make this value non-negative.
 
APInt getMinValue () const
 Return the minimal unsigned value possible given these KnownBits.
 
APInt getSignedMinValue () const
 Return the minimal signed value possible given these KnownBits.
 
APInt getMaxValue () const
 Return the maximal unsigned value possible given these KnownBits.
 
APInt getSignedMaxValue () const
 Return the maximal signed value possible given these KnownBits.
 
KnownBits trunc (unsigned BitWidth) const
 Return known bits for a truncation of the value we're tracking.
 
KnownBits anyext (unsigned BitWidth) const
 Return known bits for an "any" extension of the value we're tracking, where we don't know anything about the extended bits.
 
KnownBits zext (unsigned BitWidth) const
 Return known bits for a zero extension of the value we're tracking.
 
KnownBits sext (unsigned BitWidth) const
 Return known bits for a sign extension of the value we're tracking.
 
KnownBits anyextOrTrunc (unsigned BitWidth) const
 Return known bits for an "any" extension or truncation of the value we're tracking.
 
KnownBits zextOrTrunc (unsigned BitWidth) const
 Return known bits for a zero extension or truncation of the value we're tracking.
 
KnownBits sextOrTrunc (unsigned BitWidth) const
 Return known bits for a sign extension or truncation of the value we're tracking.
 
KnownBits sextInReg (unsigned SrcBitWidth) const
 Return known bits for a in-register sign extension of the value we're tracking.
 
void insertBits (const KnownBits &SubBits, unsigned BitPosition)
 Insert the bits from a smaller known bits starting at bitPosition.
 
KnownBits extractBits (unsigned NumBits, unsigned BitPosition) const
 Return a subset of the known bits from [bitPosition,bitPosition+numBits).
 
KnownBits concat (const KnownBits &Lo) const
 Concatenate the bits from Lo onto the bottom of *this.
 
KnownBits makeGE (const APInt &Val) const
 Return KnownBits based on this, but updated given that the underlying value is known to be greater than or equal to Val.
 
unsigned countMinTrailingZeros () const
 Returns the minimum number of trailing zero bits.
 
unsigned countMinTrailingOnes () const
 Returns the minimum number of trailing one bits.
 
unsigned countMinLeadingZeros () const
 Returns the minimum number of leading zero bits.
 
unsigned countMinLeadingOnes () const
 Returns the minimum number of leading one bits.
 
unsigned countMinSignBits () const
 Returns the number of times the sign bit is replicated into the other bits.
 
unsigned countMaxSignificantBits () const
 Returns the maximum number of bits needed to represent all possible signed values with these known bits.
 
unsigned countMaxTrailingZeros () const
 Returns the maximum number of trailing zero bits possible.
 
unsigned countMaxTrailingOnes () const
 Returns the maximum number of trailing one bits possible.
 
unsigned countMaxLeadingZeros () const
 Returns the maximum number of leading zero bits possible.
 
unsigned countMaxLeadingOnes () const
 Returns the maximum number of leading one bits possible.
 
unsigned countMinPopulation () const
 Returns the number of bits known to be one.
 
unsigned countMaxPopulation () const
 Returns the maximum number of bits that could be one.
 
unsigned countMaxActiveBits () const
 Returns the maximum number of bits needed to represent all possible unsigned values with these known bits.
 
KnownBits intersectWith (const KnownBits &RHS) const
 Returns KnownBits information that is known to be true for both this and RHS.
 
KnownBits unionWith (const KnownBits &RHS) const
 Returns KnownBits information that is known to be true for either this or RHS or both.
 
KnownBitsoperator&= (const KnownBits &RHS)
 Update known bits based on ANDing with RHS.
 
KnownBitsoperator|= (const KnownBits &RHS)
 Update known bits based on ORing with RHS.
 
KnownBitsoperator^= (const KnownBits &RHS)
 Update known bits based on XORing with RHS.
 
KnownBits abs (bool IntMinIsPoison=false) const
 Compute known bits for the absolute value.
 
KnownBits byteSwap () const
 
KnownBits reverseBits () const
 
KnownBits blsi () const
 Compute known bits for X & -X, which has only the lowest bit set of X set.
 
KnownBits blsmsk () const
 Compute known bits for X ^ (X - 1), which has all bits up to and including the lowest set bit of X set.
 
bool operator== (const KnownBits &Other) const
 
bool operator!= (const KnownBits &Other) const
 
void print (raw_ostream &OS) const
 
void dump () const
 

Static Public Member Functions

static KnownBits makeConstant (const APInt &C)
 Create known bits from a known constant.
 
static KnownBits commonBits (const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits common to LHS and RHS.
 
static bool haveNoCommonBitsSet (const KnownBits &LHS, const KnownBits &RHS)
 Return true if LHS and RHS have no common bits set.
 
static KnownBits computeForAddCarry (const KnownBits &LHS, const KnownBits &RHS, const KnownBits &Carry)
 Compute known bits resulting from adding LHS, RHS and a 1-bit Carry.
 
static KnownBits computeForAddSub (bool Add, bool NSW, bool NUW, const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits resulting from adding LHS and RHS.
 
static KnownBits computeForSubBorrow (const KnownBits &LHS, KnownBits RHS, const KnownBits &Borrow)
 Compute known bits results from subtracting RHS from LHS with 1-bit Borrow.
 
static KnownBits sadd_sat (const KnownBits &LHS, const KnownBits &RHS)
 Compute knownbits resulting from llvm.sadd.sat(LHS, RHS)
 
static KnownBits uadd_sat (const KnownBits &LHS, const KnownBits &RHS)
 Compute knownbits resulting from llvm.uadd.sat(LHS, RHS)
 
static KnownBits ssub_sat (const KnownBits &LHS, const KnownBits &RHS)
 Compute knownbits resulting from llvm.ssub.sat(LHS, RHS)
 
static KnownBits usub_sat (const KnownBits &LHS, const KnownBits &RHS)
 Compute knownbits resulting from llvm.usub.sat(LHS, RHS)
 
static KnownBits avgFloorS (const KnownBits &LHS, const KnownBits &RHS)
 Compute knownbits resulting from APIntOps::avgFloorS.
 
static KnownBits avgFloorU (const KnownBits &LHS, const KnownBits &RHS)
 Compute knownbits resulting from APIntOps::avgFloorU.
 
static KnownBits avgCeilS (const KnownBits &LHS, const KnownBits &RHS)
 Compute knownbits resulting from APIntOps::avgCeilS.
 
static KnownBits avgCeilU (const KnownBits &LHS, const KnownBits &RHS)
 Compute knownbits resulting from APIntOps::avgCeilU.
 
static KnownBits mul (const KnownBits &LHS, const KnownBits &RHS, bool NoUndefSelfMultiply=false)
 Compute known bits resulting from multiplying LHS and RHS.
 
static KnownBits mulhs (const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits from sign-extended multiply-hi.
 
static KnownBits mulhu (const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits from zero-extended multiply-hi.
 
static KnownBits sdiv (const KnownBits &LHS, const KnownBits &RHS, bool Exact=false)
 Compute known bits for sdiv(LHS, RHS).
 
static KnownBits udiv (const KnownBits &LHS, const KnownBits &RHS, bool Exact=false)
 Compute known bits for udiv(LHS, RHS).
 
static KnownBits urem (const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits for urem(LHS, RHS).
 
static KnownBits srem (const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits for srem(LHS, RHS).
 
static KnownBits umax (const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits for umax(LHS, RHS).
 
static KnownBits umin (const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits for umin(LHS, RHS).
 
static KnownBits smax (const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits for smax(LHS, RHS).
 
static KnownBits smin (const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits for smin(LHS, RHS).
 
static KnownBits abdu (const KnownBits &LHS, const KnownBits &RHS)
 Compute known bits for abdu(LHS, RHS).
 
static KnownBits abds (KnownBits LHS, KnownBits RHS)
 Compute known bits for abds(LHS, RHS).
 
static KnownBits shl (const KnownBits &LHS, const KnownBits &RHS, bool NUW=false, bool NSW=false, bool ShAmtNonZero=false)
 Compute known bits for shl(LHS, RHS).
 
static KnownBits lshr (const KnownBits &LHS, const KnownBits &RHS, bool ShAmtNonZero=false, bool Exact=false)
 Compute known bits for lshr(LHS, RHS).
 
static KnownBits ashr (const KnownBits &LHS, const KnownBits &RHS, bool ShAmtNonZero=false, bool Exact=false)
 Compute known bits for ashr(LHS, RHS).
 
static std::optional< booleq (const KnownBits &LHS, const KnownBits &RHS)
 Determine if these known bits always give the same ICMP_EQ result.
 
static std::optional< boolne (const KnownBits &LHS, const KnownBits &RHS)
 Determine if these known bits always give the same ICMP_NE result.
 
static std::optional< boolugt (const KnownBits &LHS, const KnownBits &RHS)
 Determine if these known bits always give the same ICMP_UGT result.
 
static std::optional< booluge (const KnownBits &LHS, const KnownBits &RHS)
 Determine if these known bits always give the same ICMP_UGE result.
 
static std::optional< boolult (const KnownBits &LHS, const KnownBits &RHS)
 Determine if these known bits always give the same ICMP_ULT result.
 
static std::optional< boolule (const KnownBits &LHS, const KnownBits &RHS)
 Determine if these known bits always give the same ICMP_ULE result.
 
static std::optional< boolsgt (const KnownBits &LHS, const KnownBits &RHS)
 Determine if these known bits always give the same ICMP_SGT result.
 
static std::optional< boolsge (const KnownBits &LHS, const KnownBits &RHS)
 Determine if these known bits always give the same ICMP_SGE result.
 
static std::optional< boolslt (const KnownBits &LHS, const KnownBits &RHS)
 Determine if these known bits always give the same ICMP_SLT result.
 
static std::optional< boolsle (const KnownBits &LHS, const KnownBits &RHS)
 Determine if these known bits always give the same ICMP_SLE result.
 

Public Attributes

APInt Zero
 
APInt One
 

Detailed Description

Definition at line 23 of file KnownBits.h.

Constructor & Destructor Documentation

◆ KnownBits() [1/2]

llvm::KnownBits::KnownBits ( )
default

◆ KnownBits() [2/2]

llvm::KnownBits::KnownBits ( unsigned  BitWidth)
inline

Create a known bits object of BitWidth bits initialized to unknown.

Definition at line 37 of file KnownBits.h.

Member Function Documentation

◆ abds()

KnownBits KnownBits::abds ( KnownBits  LHS,
KnownBits  RHS 
)
static

Compute known bits for abds(LHS, RHS).

Definition at line 253 of file KnownBits.cpp.

References computeForAddSub(), intersectWith(), LHS, and RHS.

Referenced by llvm::SelectionDAG::computeKnownBits().

◆ abdu()

KnownBits KnownBits::abdu ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute known bits for abdu(LHS, RHS).

Definition at line 234 of file KnownBits.cpp.

References computeForAddSub(), intersectWith(), LHS, and RHS.

Referenced by llvm::SelectionDAG::computeKnownBits(), and computeKnownBitsForPSADBW().

◆ abs()

KnownBits KnownBits::abs ( bool  IntMinIsPoison = false) const

◆ anyext()

KnownBits llvm::KnownBits::anyext ( unsigned  BitWidth) const
inline

Return known bits for an "any" extension of the value we're tracking, where we don't know anything about the extended bits.

Definition at line 163 of file KnownBits.h.

References llvm::BitWidth, KnownBits(), One, Zero, and llvm::APInt::zext().

Referenced by anyextOrTrunc(), llvm::SelectionDAG::computeKnownBits(), computeKnownBitsFromICmpCond(), llvm::GISelKnownBits::computeKnownBitsImpl(), llvm::FunctionLoweringInfo::GetLiveOutRegInfo(), and llvm::TargetLowering::SimplifyDemandedBits().

◆ anyextOrTrunc()

KnownBits llvm::KnownBits::anyextOrTrunc ( unsigned  BitWidth) const
inline

◆ ashr()

KnownBits KnownBits::ashr ( const KnownBits LHS,
const KnownBits RHS,
bool  ShAmtNonZero = false,
bool  Exact = false 
)
static

◆ avgCeilS()

KnownBits KnownBits::avgCeilS ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute knownbits resulting from APIntOps::avgCeilS.

Definition at line 798 of file KnownBits.cpp.

References avgCompute(), LHS, and RHS.

Referenced by llvm::SelectionDAG::computeKnownBits().

◆ avgCeilU()

KnownBits KnownBits::avgCeilU ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute knownbits resulting from APIntOps::avgCeilU.

Definition at line 803 of file KnownBits.cpp.

References avgCompute(), LHS, and RHS.

Referenced by llvm::SelectionDAG::computeKnownBits().

◆ avgFloorS()

KnownBits KnownBits::avgFloorS ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute knownbits resulting from APIntOps::avgFloorS.

Definition at line 788 of file KnownBits.cpp.

References avgCompute(), LHS, and RHS.

Referenced by llvm::SelectionDAG::computeKnownBits().

◆ avgFloorU()

KnownBits KnownBits::avgFloorU ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute knownbits resulting from APIntOps::avgFloorU.

Definition at line 793 of file KnownBits.cpp.

References avgCompute(), LHS, and RHS.

Referenced by llvm::SelectionDAG::computeKnownBits().

◆ blsi()

KnownBits KnownBits::blsi ( ) const

Compute known bits for X & -X, which has only the lowest bit set of X set.

The name comes from the X86 BMI instruction

Definition at line 1132 of file KnownBits.cpp.

References llvm::BitWidth, countMaxTrailingZeros(), countMinTrailingZeros(), getBitWidth(), One, llvm::APInt::setBit(), llvm::APInt::setBitsFrom(), and Zero.

Referenced by getKnownBitsFromAndXorOr().

◆ blsmsk()

KnownBits KnownBits::blsmsk ( ) const

Compute known bits for X ^ (X - 1), which has all bits up to and including the lowest set bit of X set.

The name comes from the X86 BMI instruction.

Definition at line 1143 of file KnownBits.cpp.

References llvm::BitWidth, countMaxTrailingZeros(), countMinTrailingZeros(), getBitWidth(), One, llvm::APInt::setBitsFrom(), llvm::APInt::setLowBits(), and Zero.

Referenced by getKnownBitsFromAndXorOr().

◆ byteSwap()

KnownBits llvm::KnownBits::byteSwap ( ) const
inline

◆ commonBits()

static KnownBits llvm::KnownBits::commonBits ( const KnownBits LHS,
const KnownBits RHS 
)
inlinestatic

Compute known bits common to LHS and RHS.

Definition at line 323 of file KnownBits.h.

References LHS, and RHS.

◆ computeForAddCarry()

KnownBits KnownBits::computeForAddCarry ( const KnownBits LHS,
const KnownBits RHS,
const KnownBits Carry 
)
static

Compute known bits resulting from adding LHS, RHS and a 1-bit Carry.

Definition at line 50 of file KnownBits.cpp.

References assert(), getBitWidth(), llvm::APInt::getBoolValue(), LHS, One, RHS, and Zero.

Referenced by avgCompute(), computeForAddSub(), and llvm::SelectionDAG::computeKnownBits().

◆ computeForAddSub()

KnownBits KnownBits::computeForAddSub ( bool  Add,
bool  NSW,
bool  NUW,
const KnownBits LHS,
const KnownBits RHS 
)
static

◆ computeForSubBorrow()

KnownBits KnownBits::computeForSubBorrow ( const KnownBits LHS,
KnownBits  RHS,
const KnownBits Borrow 
)
static

Compute known bits results from subtracting RHS from LHS with 1-bit Borrow.

Definition at line 143 of file KnownBits.cpp.

References assert(), getBitWidth(), llvm::APInt::getBoolValue(), LHS, One, RHS, std::swap(), and Zero.

Referenced by llvm::SelectionDAG::computeKnownBits().

◆ concat()

KnownBits llvm::KnownBits::concat ( const KnownBits Lo) const
inline

Concatenate the bits from Lo onto the bottom of *this.

This is equivalent to: (this->zext(NewWidth) << Lo.getBitWidth()) | Lo.zext(NewWidth)

Definition at line 229 of file KnownBits.h.

References llvm::APInt::concat(), KnownBits(), llvm::Lo, One, and Zero.

Referenced by llvm::SelectionDAG::computeKnownBits(), and llvm::TargetLowering::SimplifyDemandedBits().

◆ countMaxActiveBits()

unsigned llvm::KnownBits::countMaxActiveBits ( ) const
inline

Returns the maximum number of bits needed to represent all possible unsigned values with these known bits.

This is the inverse of the minimum number of leading zeros.

Definition at line 292 of file KnownBits.h.

References countMinLeadingZeros(), and getBitWidth().

Referenced by combinePMULH(), llvm::AMDGPUTargetLowering::computeKnownBitsForTargetNode(), llvm::SITargetLowering::computeKnownBitsForTargetNode(), detectAVGPattern(), detectExtMul(), getPack(), narrowIndex(), llvm::AMDGPUTargetLowering::numBitsUnsigned(), simplifyAndInst(), and simplifyLShrInst().

◆ countMaxLeadingOnes()

unsigned llvm::KnownBits::countMaxLeadingOnes ( ) const
inline

Returns the maximum number of leading one bits possible.

Definition at line 279 of file KnownBits.h.

References llvm::APInt::countl_zero(), and Zero.

◆ countMaxLeadingZeros()

unsigned llvm::KnownBits::countMaxLeadingZeros ( ) const
inline

◆ countMaxPopulation()

unsigned llvm::KnownBits::countMaxPopulation ( ) const
inline

◆ countMaxSignificantBits()

unsigned llvm::KnownBits::countMaxSignificantBits ( ) const
inline

Returns the maximum number of bits needed to represent all possible signed values with these known bits.

This is the inverse of the minimum number of known sign bits. Examples for bitwidth 5: 110?? --> 4 0000? --> 2

Definition at line 265 of file KnownBits.h.

References countMinSignBits(), and getBitWidth().

Referenced by llvm::AMDGPUTargetLowering::computeKnownBitsForTargetNode().

◆ countMaxTrailingOnes()

unsigned llvm::KnownBits::countMaxTrailingOnes ( ) const
inline

Returns the maximum number of trailing one bits possible.

Definition at line 273 of file KnownBits.h.

References llvm::APInt::countr_zero(), and Zero.

◆ countMaxTrailingZeros()

unsigned llvm::KnownBits::countMaxTrailingZeros ( ) const
inline

◆ countMinLeadingOnes()

unsigned llvm::KnownBits::countMinLeadingOnes ( ) const
inline

Returns the minimum number of leading one bits.

Definition at line 247 of file KnownBits.h.

References llvm::APInt::countl_one(), and One.

Referenced by computeKnownBitsFromOperator(), countMinSignBits(), llvm::GCNTTIImpl::rewriteIntrinsicWithAddressSpace(), and llvm::InstCombinerImpl::visitSwitchInst().

◆ countMinLeadingZeros()

unsigned llvm::KnownBits::countMinLeadingZeros ( ) const
inline

◆ countMinPopulation()

unsigned llvm::KnownBits::countMinPopulation ( ) const
inline

Returns the number of bits known to be one.

Definition at line 282 of file KnownBits.h.

References One, and llvm::APInt::popcount().

Referenced by abs(), foldCtpop(), foldCtpopPow2Test(), llvm::InstCombinerImpl::foldICmpWithZero(), llvm::isKnownToBeAPowerOfTwo(), and llvm::TargetLowering::SimplifySetCC().

◆ countMinSignBits()

unsigned llvm::KnownBits::countMinSignBits ( ) const
inline

Returns the number of times the sign bit is replicated into the other bits.

Definition at line 251 of file KnownBits.h.

References countMinLeadingOnes(), countMinLeadingZeros(), isNegative(), and isNonNegative().

Referenced by llvm::SelectionDAG::ComputeNumSignBits(), ComputeNumSignBitsImpl(), countMaxSignificantBits(), setShiftFlags(), and llvm::TargetLowering::SimplifyDemandedBits().

◆ countMinTrailingOnes()

unsigned llvm::KnownBits::countMinTrailingOnes ( ) const
inline

Returns the minimum number of trailing one bits.

Definition at line 241 of file KnownBits.h.

References llvm::APInt::countr_one(), and One.

Referenced by getKnownBitsFromAndXorOr().

◆ countMinTrailingZeros()

unsigned llvm::KnownBits::countMinTrailingZeros ( ) const
inline

◆ dump()

void KnownBits::dump ( ) const

Definition at line 1167 of file KnownBits.cpp.

References llvm::dbgs(), and print().

◆ eq()

std::optional< bool > KnownBits::eq ( const KnownBits LHS,
const KnownBits RHS 
)
static

Determine if these known bits always give the same ICMP_EQ result.

Definition at line 494 of file KnownBits.cpp.

References LHS, and RHS.

Referenced by llvm::X86TargetLowering::computeKnownBitsForTargetNode(), llvm::CombinerHelper::matchICmpToTrueFalseKnownBits(), and ne().

◆ extractBits()

KnownBits llvm::KnownBits::extractBits ( unsigned  NumBits,
unsigned  BitPosition 
) const
inline

◆ getBitWidth()

unsigned llvm::KnownBits::getBitWidth ( ) const
inline

Get the bit width of this value.

Definition at line 40 of file KnownBits.h.

References assert(), llvm::APInt::getBitWidth(), One, and Zero.

Referenced by abs(), anyextOrTrunc(), blsi(), blsmsk(), combineFMulcFCMulc(), computeForAddCarry(), computeForSatAddSub(), computeForSubBorrow(), computeKnownBits(), llvm::SelectionDAG::computeKnownBits(), llvm::ARMTargetLowering::computeKnownBitsForTargetNode(), llvm::RISCVTargetLowering::computeKnownBitsForTargetNode(), llvm::AArch64TargetLowering::computeKnownBitsForTargetNode(), llvm::AMDGPUTargetLowering::computeKnownBitsForTargetNode(), llvm::LanaiTargetLowering::computeKnownBitsForTargetNode(), llvm::SystemZTargetLowering::computeKnownBitsForTargetNode(), llvm::X86TargetLowering::computeKnownBitsForTargetNode(), computeKnownBitsFromCmp(), computeKnownBitsFromCond(), llvm::computeKnownBitsFromContext(), computeKnownBitsFromICmpCond(), computeKnownBitsFromOperator(), llvm::computeKnownBitsFromRangeMetadata(), computeKnownBitsFromShiftOperator(), llvm::GISelKnownBits::computeKnownBitsImpl(), countMaxActiveBits(), countMaxPopulation(), countMaxSignificantBits(), eliminateDeadSwitchCases(), foldShiftIntoShiftInAnotherHandOfAndInICmp(), llvm::ConstantRange::fromKnownBits(), getKnownBitsFromAndXorOr(), llvm::FunctionLoweringInfo::GetLiveOutRegInfo(), llvm::getOrEnforceKnownAlignment(), inferAlignment(), isConstant(), llvm::SelectionDAG::isKnownNeverZero(), isNonZeroShift(), LowerCTPOP(), makeGE(), print(), setShiftFlags(), sextInReg(), sextOrTrunc(), llvm::TargetLowering::SimplifyDemandedBits(), llvm::InstCombinerImpl::SimplifyDemandedInstructionBits(), llvm::InstCombinerImpl::SimplifyDemandedUseBits(), simplifyDivRem(), simplifyShift(), smax(), smin(), tryBitfieldInsertOpFromOr(), llvm::InstCombinerImpl::visitCallInst(), llvm::InstCombinerImpl::visitSwitchInst(), zext(), and zextOrTrunc().

◆ getConstant()

const APInt & llvm::KnownBits::getConstant ( ) const
inline

Returns the value when all bits have a known value.

This just returns One with a protective assertion.

Definition at line 57 of file KnownBits.h.

References assert(), isConstant(), and One.

Referenced by combineFMulcFCMulc(), computeKnownBitsFromOperator(), llvm::InstCombinerImpl::foldICmpUsingKnownBits(), LowerVectorAllEqual(), llvm::TargetLowering::SimplifyDemandedBits(), and llvm::X86TargetLowering::SimplifyDemandedBitsForTargetNode().

◆ getMaxValue()

APInt llvm::KnownBits::getMaxValue ( ) const
inline

◆ getMinValue()

APInt llvm::KnownBits::getMinValue ( ) const
inline

Return the minimal unsigned value possible given these KnownBits.

Definition at line 125 of file KnownBits.h.

References One.

Referenced by extractBits(), llvm::InstCombinerImpl::foldICmpUsingKnownBits(), llvm::ConstantRange::fromKnownBits(), simplifyShift(), and simplifyX86immShift().

◆ getSignedMaxValue()

APInt llvm::KnownBits::getSignedMaxValue ( ) const
inline

Return the maximal signed value possible given these KnownBits.

Definition at line 147 of file KnownBits.h.

References llvm::APInt::isSignBitClear(), and One.

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

◆ getSignedMinValue()

APInt llvm::KnownBits::getSignedMinValue ( ) const
inline

Return the minimal signed value possible given these KnownBits.

Definition at line 131 of file KnownBits.h.

References llvm::APInt::isSignBitClear(), One, llvm::APInt::setSignBit(), and Zero.

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

◆ hasConflict()

bool llvm::KnownBits::hasConflict ( ) const
inline

◆ haveNoCommonBitsSet()

static bool llvm::KnownBits::haveNoCommonBitsSet ( const KnownBits LHS,
const KnownBits RHS 
)
inlinestatic

Return true if LHS and RHS have no common bits set.

Definition at line 328 of file KnownBits.h.

References LHS, and RHS.

Referenced by llvm::haveNoCommonBitsSet(), and llvm::SelectionDAG::haveNoCommonBitsSet().

◆ insertBits()

void llvm::KnownBits::insertBits ( const KnownBits SubBits,
unsigned  BitPosition 
)
inline

Insert the bits from a smaller known bits starting at bitPosition.

Definition at line 215 of file KnownBits.h.

References llvm::APInt::insertBits(), One, and Zero.

Referenced by llvm::SelectionDAG::computeKnownBits(), computeKnownBitsFromOperator(), and llvm::GISelKnownBits::computeKnownBitsImpl().

◆ intersectWith()

KnownBits llvm::KnownBits::intersectWith ( const KnownBits RHS) const
inline

◆ isAllOnes()

bool llvm::KnownBits::isAllOnes ( ) const
inline

Returns true if value is all one bits.

Definition at line 83 of file KnownBits.h.

References assert(), hasConflict(), llvm::APInt::isAllOnes(), and One.

Referenced by isTruncateOf(), matchBinaryShuffle(), and llvm::InstCombinerImpl::visitCallInst().

◆ isConstant()

bool llvm::KnownBits::isConstant ( ) const
inline

◆ isNegative()

bool llvm::KnownBits::isNegative ( ) const
inline

◆ isNonNegative()

bool llvm::KnownBits::isNonNegative ( ) const
inline

◆ isNonZero()

bool llvm::KnownBits::isNonZero ( ) const
inline

◆ isSignUnknown()

bool llvm::KnownBits::isSignUnknown ( ) const
inline

Returns true if we don't know the sign bit.

Definition at line 66 of file KnownBits.h.

References llvm::APInt::isSignBitSet(), One, and Zero.

◆ isStrictlyPositive()

bool llvm::KnownBits::isStrictlyPositive ( ) const
inline

Returns true if this value is known to be positive.

Definition at line 110 of file KnownBits.h.

References llvm::APInt::isSignBitSet(), llvm::APInt::isZero(), One, and Zero.

Referenced by llvm::AMDGPUTargetLowering::computeKnownBitsForTargetNode(), and llvm::SelectionDAG::isKnownNeverZero().

◆ isUnknown()

bool llvm::KnownBits::isUnknown ( ) const
inline

◆ isZero()

bool llvm::KnownBits::isZero ( ) const
inline

◆ lshr()

KnownBits KnownBits::lshr ( const KnownBits LHS,
const KnownBits RHS,
bool  ShAmtNonZero = false,
bool  Exact = false 
)
static

◆ makeConstant()

static KnownBits llvm::KnownBits::makeConstant ( const APInt C)
inlinestatic

◆ makeGE()

KnownBits KnownBits::makeGE ( const APInt Val) const

Return KnownBits based on this, but updated given that the underlying value is known to be greater than or equal to Val.

Definition at line 172 of file KnownBits.cpp.

References llvm::APInt::clearLowBits(), llvm::countl_one(), getBitWidth(), KnownBits(), N, One, and Zero.

◆ makeNegative()

void llvm::KnownBits::makeNegative ( )
inline

◆ makeNonNegative()

void llvm::KnownBits::makeNonNegative ( )
inline

◆ mul()

KnownBits KnownBits::mul ( const KnownBits LHS,
const KnownBits RHS,
bool  NoUndefSelfMultiply = false 
)
static

◆ mulhs()

KnownBits KnownBits::mulhs ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute known bits from sign-extended multiply-hi.

Definition at line 906 of file KnownBits.cpp.

References assert(), llvm::BitWidth, extractBits(), LHS, mul(), and RHS.

Referenced by llvm::SelectionDAG::computeKnownBits().

◆ mulhu()

KnownBits KnownBits::mulhu ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute known bits from zero-extended multiply-hi.

Definition at line 915 of file KnownBits.cpp.

References assert(), llvm::BitWidth, extractBits(), LHS, mul(), and RHS.

Referenced by llvm::SelectionDAG::computeKnownBits().

◆ ne()

std::optional< bool > KnownBits::ne ( const KnownBits LHS,
const KnownBits RHS 
)
static

Determine if these known bits always give the same ICMP_NE result.

Definition at line 502 of file KnownBits.cpp.

References eq(), LHS, and RHS.

Referenced by llvm::SelectionDAG::isKnownNeverZero(), and llvm::CombinerHelper::matchICmpToTrueFalseKnownBits().

◆ operator!=()

bool llvm::KnownBits::operator!= ( const KnownBits Other) const
inline

Definition at line 489 of file KnownBits.h.

References llvm::Other.

◆ operator&=()

KnownBits & KnownBits::operator&= ( const KnownBits RHS)

Update known bits based on ANDing with RHS.

Definition at line 1107 of file KnownBits.cpp.

References One, RHS, and Zero.

◆ operator==()

bool llvm::KnownBits::operator== ( const KnownBits Other) const
inline

Definition at line 485 of file KnownBits.h.

References One, llvm::Other, and Zero.

◆ operator^=()

KnownBits & KnownBits::operator^= ( const KnownBits RHS)

Update known bits based on XORing with RHS.

Definition at line 1123 of file KnownBits.cpp.

References One, RHS, and Zero.

◆ operator|=()

KnownBits & KnownBits::operator|= ( const KnownBits RHS)

Update known bits based on ORing with RHS.

Definition at line 1115 of file KnownBits.cpp.

References One, RHS, and Zero.

◆ print()

void KnownBits::print ( raw_ostream OS) const

Definition at line 1153 of file KnownBits.cpp.

References llvm::BitWidth, getBitWidth(), I, N, One, OS, and Zero.

Referenced by dump(), and llvm::operator<<().

◆ resetAll()

void llvm::KnownBits::resetAll ( )
inline

◆ reverseBits()

KnownBits llvm::KnownBits::reverseBits ( ) const
inline

◆ sadd_sat()

KnownBits KnownBits::sadd_sat ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute knownbits resulting from llvm.sadd.sat(LHS, RHS)

Definition at line 764 of file KnownBits.cpp.

References computeForSatAddSub(), LHS, and RHS.

Referenced by computeKnownBitsFromOperator().

◆ sdiv()

KnownBits KnownBits::sdiv ( const KnownBits LHS,
const KnownBits RHS,
bool  Exact = false 
)
static

◆ setAllOnes()

void llvm::KnownBits::setAllOnes ( )
inline

Make all bits known to be one and discard any previous information.

Definition at line 95 of file KnownBits.h.

References llvm::APInt::clearAllBits(), One, llvm::APInt::setAllBits(), and Zero.

Referenced by llvm::X86TargetLowering::computeKnownBitsForTargetNode(), and llvm::computeKnownBitsFromContext().

◆ setAllZero()

void llvm::KnownBits::setAllZero ( )
inline

◆ sext()

KnownBits llvm::KnownBits::sext ( unsigned  BitWidth) const
inline

◆ sextInReg()

KnownBits KnownBits::sextInReg ( unsigned  SrcBitWidth) const

Return known bits for a in-register sign extension of the value we're tracking.

Definition at line 155 of file KnownBits.cpp.

References assert(), llvm::BitWidth, getBitWidth(), One, and Zero.

Referenced by llvm::SelectionDAG::computeKnownBits(), and llvm::GISelKnownBits::computeKnownBitsImpl().

◆ sextOrTrunc()

KnownBits llvm::KnownBits::sextOrTrunc ( unsigned  BitWidth) const
inline

Return known bits for a sign extension or truncation of the value we're tracking.

Definition at line 202 of file KnownBits.h.

References llvm::BitWidth, getBitWidth(), sext(), and trunc().

Referenced by computeKnownBitsFromOperator().

◆ sge()

std::optional< bool > KnownBits::sge ( const KnownBits LHS,
const KnownBits RHS 
)
static

Determine if these known bits always give the same ICMP_SGE result.

Definition at line 542 of file KnownBits.cpp.

References LHS, RHS, and sgt().

Referenced by llvm::CombinerHelper::matchICmpToTrueFalseKnownBits(), llvm::TargetLowering::SimplifyDemandedBits(), and sle().

◆ sgt()

std::optional< bool > KnownBits::sgt ( const KnownBits LHS,
const KnownBits RHS 
)
static

Determine if these known bits always give the same ICMP_SGT result.

Definition at line 532 of file KnownBits.cpp.

References LHS, and RHS.

Referenced by llvm::X86TargetLowering::computeKnownBitsForTargetNode(), llvm::CombinerHelper::matchICmpToTrueFalseKnownBits(), sge(), llvm::TargetLowering::SimplifyDemandedBits(), and slt().

◆ shl()

KnownBits KnownBits::shl ( const KnownBits LHS,
const KnownBits RHS,
bool  NUW = false,
bool  NSW = false,
bool  ShAmtNonZero = false 
)
static

◆ sle()

std::optional< bool > KnownBits::sle ( const KnownBits LHS,
const KnownBits RHS 
)
static

Determine if these known bits always give the same ICMP_SLE result.

Definition at line 552 of file KnownBits.cpp.

References LHS, RHS, and sge().

Referenced by llvm::CombinerHelper::matchICmpToTrueFalseKnownBits(), and llvm::TargetLowering::SimplifyDemandedBits().

◆ slt()

std::optional< bool > KnownBits::slt ( const KnownBits LHS,
const KnownBits RHS 
)
static

Determine if these known bits always give the same ICMP_SLT result.

Definition at line 548 of file KnownBits.cpp.

References LHS, RHS, and sgt().

Referenced by llvm::CombinerHelper::matchICmpToTrueFalseKnownBits(), and llvm::TargetLowering::SimplifyDemandedBits().

◆ smax()

KnownBits KnownBits::smax ( const KnownBits LHS,
const KnownBits RHS 
)
static

◆ smin()

KnownBits KnownBits::smin ( const KnownBits LHS,
const KnownBits RHS 
)
static

◆ srem()

KnownBits KnownBits::srem ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute known bits for srem(LHS, RHS).

Definition at line 1080 of file KnownBits.cpp.

References assert(), llvm::APInt::intersects(), llvm::APInt::isSubsetOf(), LHS, One, RHS, llvm::APInt::setHighBits(), and Zero.

Referenced by llvm::SelectionDAG::computeKnownBits(), and computeKnownBitsFromOperator().

◆ ssub_sat()

KnownBits KnownBits::ssub_sat ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute knownbits resulting from llvm.ssub.sat(LHS, RHS)

Definition at line 767 of file KnownBits.cpp.

References computeForSatAddSub(), LHS, and RHS.

Referenced by computeKnownBitsFromOperator().

◆ trunc()

KnownBits llvm::KnownBits::trunc ( unsigned  BitWidth) const
inline

◆ uadd_sat()

KnownBits KnownBits::uadd_sat ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute knownbits resulting from llvm.uadd.sat(LHS, RHS)

Definition at line 770 of file KnownBits.cpp.

References computeForSatAddSub(), LHS, and RHS.

Referenced by computeKnownBitsFromOperator().

◆ udiv()

KnownBits KnownBits::udiv ( const KnownBits LHS,
const KnownBits RHS,
bool  Exact = false 
)
static

◆ uge()

std::optional< bool > KnownBits::uge ( const KnownBits LHS,
const KnownBits RHS 
)
static

Determine if these known bits always give the same ICMP_UGE result.

Definition at line 518 of file KnownBits.cpp.

References LHS, RHS, and ugt().

Referenced by isKnownNonZeroFromOperator(), llvm::CombinerHelper::matchICmpToTrueFalseKnownBits(), llvm::TargetLowering::SimplifyDemandedBits(), and ule().

◆ ugt()

std::optional< bool > KnownBits::ugt ( const KnownBits LHS,
const KnownBits RHS 
)
static

Determine if these known bits always give the same ICMP_UGT result.

Definition at line 508 of file KnownBits.cpp.

References LHS, and RHS.

Referenced by llvm::CombinerHelper::matchICmpToTrueFalseKnownBits(), llvm::TargetLowering::SimplifyDemandedBits(), uge(), and ult().

◆ ule()

std::optional< bool > KnownBits::ule ( const KnownBits LHS,
const KnownBits RHS 
)
static

Determine if these known bits always give the same ICMP_ULE result.

Definition at line 528 of file KnownBits.cpp.

References LHS, RHS, and uge().

Referenced by llvm::CombinerHelper::matchICmpToTrueFalseKnownBits(), and llvm::TargetLowering::SimplifyDemandedBits().

◆ ult()

std::optional< bool > KnownBits::ult ( const KnownBits LHS,
const KnownBits RHS 
)
static

Determine if these known bits always give the same ICMP_ULT result.

Definition at line 524 of file KnownBits.cpp.

References LHS, RHS, and ugt().

Referenced by llvm::CombinerHelper::matchICmpToTrueFalseKnownBits(), and llvm::TargetLowering::SimplifyDemandedBits().

◆ umax()

KnownBits KnownBits::umax ( const KnownBits LHS,
const KnownBits RHS 
)
static

◆ umin()

KnownBits KnownBits::umin ( const KnownBits LHS,
const KnownBits RHS 
)
static

◆ unionWith()

KnownBits llvm::KnownBits::unionWith ( const KnownBits RHS) const
inline

Returns KnownBits information that is known to be true for either this or RHS or both.

This can be used to combine different sources of information about the known bits of a single value, e.g. information about the low bits and the high bits of the result of a multiplication.

Definition at line 317 of file KnownBits.h.

References KnownBits(), One, RHS, and Zero.

Referenced by llvm::SelectionDAG::computeKnownBits(), computeKnownBitsFromCmp(), computeKnownBitsFromCond(), computeKnownBitsFromICmpCond(), computeKnownBitsFromOperator(), and llvm::TargetLowering::SimplifyDemandedBits().

◆ urem()

KnownBits KnownBits::urem ( const KnownBits LHS,
const KnownBits RHS 
)
static

◆ usub_sat()

KnownBits KnownBits::usub_sat ( const KnownBits LHS,
const KnownBits RHS 
)
static

Compute knownbits resulting from llvm.usub.sat(LHS, RHS)

Definition at line 773 of file KnownBits.cpp.

References computeForSatAddSub(), LHS, and RHS.

Referenced by llvm::SelectionDAG::computeKnownBits(), and computeKnownBitsFromOperator().

◆ zext()

KnownBits llvm::KnownBits::zext ( unsigned  BitWidth) const
inline

◆ zextOrTrunc()

KnownBits llvm::KnownBits::zextOrTrunc ( unsigned  BitWidth) const
inline

Member Data Documentation

◆ One

APInt llvm::KnownBits::One

Definition at line 25 of file KnownBits.h.

Referenced by abs(), llvm::FunctionLoweringInfo::AddLiveOutRegInfo(), anyext(), ashr(), llvm::ConstantRange::binaryXor(), blsi(), blsmsk(), byteSwap(), llvm::SelectionDAGISel::CheckOrMask(), combineSetCC(), computeForAddCarry(), computeForAddCarry(), computeForAddSub(), computeForSatAddSub(), computeForSubBorrow(), computeKnownBits(), llvm::SelectionDAG::computeKnownBits(), llvm::SITargetLowering::computeKnownBitsForTargetInstr(), llvm::ARMTargetLowering::computeKnownBitsForTargetNode(), llvm::RISCVTargetLowering::computeKnownBitsForTargetNode(), llvm::AMDGPUTargetLowering::computeKnownBitsForTargetNode(), llvm::X86TargetLowering::computeKnownBitsForTargetNode(), computeKnownBitsFromCmp(), computeKnownBitsFromOperator(), llvm::computeKnownBitsFromRangeMetadata(), llvm::GISelKnownBits::computeKnownBitsImpl(), llvm::GISelKnownBits::computeNumSignBits(), llvm::FunctionLoweringInfo::ComputePHILiveOutRegInfo(), concat(), countMaxLeadingZeros(), countMaxTrailingZeros(), countMinLeadingOnes(), countMinPopulation(), countMinTrailingOnes(), llvm::DemandedBits::determineLiveOperandBitsSub(), divComputeLowBit(), dumpResult(), eliminateDeadSwitchCases(), extractBits(), foldCtpopPow2Test(), foldCttzCtlz(), llvm::InstCombinerImpl::foldICmpBinOp(), llvm::InstCombinerImpl::foldICmpTruncConstant(), llvm::InstCombinerImpl::foldICmpUsingKnownBits(), llvm::InstCombinerImpl::foldICmpWithZero(), getBitWidth(), getConstant(), getKnownBitsFromAndXorOr(), llvm::GISelKnownBits::getKnownOnes(), getMinValue(), getSignedMaxValue(), getSignedMinValue(), hasConflict(), insertBits(), intersectWith(), isAllOnes(), isConstant(), llvm::SelectionDAG::isKnownNeverZero(), isKnownNonEqual(), isKnownNonZeroFromOperator(), isKnownToBeAPowerOfTwo(), isNegative(), isNonZero(), isNonZeroAdd(), isNonZeroMul(), isNonZeroShift(), isSignUnknown(), isStrictlyPositive(), isUnknown(), lshr(), makeGE(), makeNegative(), matchBinaryShuffle(), llvm::CombinerHelper::matchRedundantAnd(), llvm::CombinerHelper::matchRedundantOr(), mul(), operator&=(), operator==(), operator^=(), operator|=(), print(), resetAll(), reverseBits(), sdiv(), setAllOnes(), setAllZero(), sext(), sextInReg(), shl(), llvm::TargetLowering::SimplifyDemandedBits(), llvm::X86TargetLowering::SimplifyDemandedBitsForTargetNode(), llvm::InstCombinerImpl::SimplifyDemandedUseBits(), llvm::InstCombinerImpl::SimplifyMultipleUseDemandedBits(), llvm::TargetLowering::SimplifyMultipleUseDemandedBits(), simplifyRightShift(), simplifyShift(), llvm::InstCombinerImpl::simplifyShrShlDemandedBits(), smax(), smin(), srem(), llvm::ConstantRange::toKnownBits(), trunc(), unionWith(), llvm::InstCombinerImpl::visitOr(), and zext().

◆ Zero

APInt llvm::KnownBits::Zero

Definition at line 24 of file KnownBits.h.

Referenced by abs(), llvm::FunctionLoweringInfo::AddLiveOutRegInfo(), adjustForRedundantAnd(), anyext(), ashr(), llvm::ConstantRange::binaryXor(), blsi(), blsmsk(), byteSwap(), combineSetCC(), computeForAddCarry(), computeForAddCarry(), computeForAddSub(), computeForSatAddSub(), computeForSubBorrow(), computeKnownBits(), llvm::SelectionDAG::computeKnownBits(), llvm::GISelKnownBits::computeKnownBitsForAlignment(), llvm::TargetLowering::computeKnownBitsForFrameIndex(), llvm::SITargetLowering::computeKnownBitsForFrameIndex(), llvm::SITargetLowering::computeKnownBitsForTargetInstr(), llvm::ARMTargetLowering::computeKnownBitsForTargetNode(), llvm::RISCVTargetLowering::computeKnownBitsForTargetNode(), llvm::AArch64TargetLowering::computeKnownBitsForTargetNode(), llvm::AMDGPUTargetLowering::computeKnownBitsForTargetNode(), llvm::SITargetLowering::computeKnownBitsForTargetNode(), llvm::LanaiTargetLowering::computeKnownBitsForTargetNode(), llvm::PPCTargetLowering::computeKnownBitsForTargetNode(), llvm::SystemZTargetLowering::computeKnownBitsForTargetNode(), llvm::X86TargetLowering::computeKnownBitsForTargetNode(), computeKnownBitsFromCmp(), llvm::computeKnownBitsFromContext(), computeKnownBitsFromOperator(), llvm::computeKnownBitsFromRangeMetadata(), llvm::GISelKnownBits::computeKnownBitsImpl(), computeKnownFPClass(), llvm::GISelKnownBits::computeNumSignBits(), llvm::SelectionDAG::ComputeNumSignBits(), ComputeNumSignBitsImpl(), llvm::FunctionLoweringInfo::ComputePHILiveOutRegInfo(), concat(), countMaxLeadingOnes(), countMaxPopulation(), countMaxTrailingOnes(), countMinLeadingZeros(), countMinTrailingZeros(), llvm::DemandedBits::determineLiveOperandBitsSub(), divComputeLowBit(), dumpResult(), eliminateDeadSwitchCases(), extractBits(), llvm::InstCombinerImpl::foldAddWithConstant(), foldCtpop(), llvm::InstCombinerImpl::foldICmpTruncConstant(), llvm::InstCombinerImpl::foldICmpUsingKnownBits(), getBitWidth(), getKnownBitsFromAndXorOr(), llvm::GISelKnownBits::getKnownZeroes(), getSignedMinValue(), hasConflict(), insertBits(), intersectWith(), isConstant(), isKnownNonEqual(), isKnownToBeAPowerOfTwo(), isNonNegative(), isNonZeroShift(), isSignUnknown(), isStrictlyPositive(), isTruncateOf(), isUnknown(), isZero(), knownBitsForWorkitemID(), LowerMUL(), lshr(), makeGE(), makeNonNegative(), llvm::MaskedValueIsZero(), matchBinaryShuffle(), llvm::CombinerHelper::matchRedundantAnd(), llvm::CombinerHelper::matchRedundantOr(), mul(), operator&=(), operator==(), operator^=(), operator|=(), performANDCombine(), llvm::ARMTargetLowering::PerformCMOVCombine(), llvm::ARMTargetLowering::PerformCMOVToBFICombine(), performORCombine(), print(), provablyDisjointOr(), resetAll(), reverseBits(), sdiv(), llvm::PPCTargetLowering::SelectAddressRegImm(), llvm::PPCTargetLowering::SelectAddressRegImm34(), llvm::PPCTargetLowering::SelectAddressRegReg(), llvm::LoongArchDAGToDAGISel::selectShiftMask(), llvm::RISCVDAGToDAGISel::selectShiftMask(), setAllOnes(), setAllZero(), sext(), sextInReg(), shl(), llvm::simplifyBinaryIntrinsic(), llvm::TargetLowering::SimplifyDemandedBits(), llvm::X86TargetLowering::SimplifyDemandedBitsForTargetNode(), llvm::InstCombinerImpl::SimplifyDemandedUseBits(), llvm::X86TTIImpl::simplifyDemandedUseBitsIntrinsic(), llvm::TargetLowering::SimplifyDemandedVectorElts(), llvm::InstCombinerImpl::SimplifyMultipleUseDemandedBits(), llvm::TargetLowering::SimplifyMultipleUseDemandedBits(), llvm::X86TargetLowering::SimplifyMultipleUseDemandedBitsForTargetNode(), simplifyShift(), llvm::InstCombinerImpl::simplifyShrShlDemandedBits(), simplifySubInst(), smax(), smin(), srem(), llvm::ConstantRange::toKnownBits(), trunc(), tryBitfieldInsertOpFromOr(), tryBitfieldInsertOpFromOrAndImm(), udiv(), unionWith(), urem(), llvm::InstCombinerImpl::visitSub(), and zext().


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