LLVM 24.0.0git
Public Types | Public Member Functions | Static Public Member Functions | Public Attributes | Static Public Attributes | List of all members
llvm::KnownFPClass Struct Reference

#include "llvm/Support/KnownFPClass.h"

Public Types

enum class  MinMaxKind {
  minimum , maximum , minimumnum , maximumnum ,
  minnum , maxnum
}

Public Member Functions

FPClassTest getKnownFPClasses () const
 Floating-point classes the value could be one of.
void setKnownFPClasses (FPClassTest Classes)
std::optional< bool > getSignBit () const
 std::nullopt if the sign bit is unknown, true if the sign bit is definitely set or false if the sign bit is definitely unset.
void setSignBit (std::optional< bool > Sign)
 KnownFPClass (FPClassTest Known=fcAllFlags, std::optional< bool > Sign={})
LLVM_ABI KnownFPClass (const APFloat &C)
bool operator== (KnownFPClass Other) const
bool isKnownNever (FPClassTest Mask) const
 Return true if it's known this can never be one of the mask entries.
bool isKnownAlways (FPClassTest Mask) const
bool isUnknown () const
bool isKnownNeverNaN () const
 Return true if it's known this can never be a nan.
bool isKnownAlwaysNaN () const
 Return true if it's known this must always be a nan.
bool isKnownNeverInfinity () const
 Return true if it's known this can never be an infinity.
bool isKnownNeverInfOrNaN () const
 Return true if it's known this can never be an infinity or nan.
bool isKnownNeverPosInfinity () const
 Return true if it's known this can never be +infinity.
bool isKnownNeverNegInfinity () const
 Return true if it's known this can never be -infinity.
bool isKnownNeverSubnormal () const
 Return true if it's known this can never be a subnormal.
bool isKnownNeverPosSubnormal () const
 Return true if it's known this can never be a positive subnormal.
bool isKnownNeverNegSubnormal () const
 Return true if it's known this can never be a negative subnormal.
bool isKnownNeverZero () const
 Return true if it's known this can never be a zero.
bool isKnownNeverPosZero () const
 Return true if it's known this can never be a literal positive zero.
bool isKnownNeverNegZero () const
 Return true if it's known this can never be a negative zero.
LLVM_ABI bool isKnownNeverLogicalZero (DenormalMode Mode) const
 Return true if it's known this can never be interpreted as a zero.
LLVM_ABI bool isKnownNeverLogicalNegZero (DenormalMode Mode) const
 Return true if it's known this can never be interpreted as a negative zero.
LLVM_ABI bool isKnownNeverLogicalPosZero (DenormalMode Mode) const
 Return true if it's known this can never be interpreted as a positive zero.
bool cannotBeOrderedLessThanZero () const
 Return true if we can prove that the analyzed floating-point value is either NaN or never less than -0.0.
bool cannotBeOrderedGreaterThanZero () const
 Return true if we can prove that the analyzed floating-point value is either NaN or never greater than -0.0.
bool cannotBeOrderedLessEqZero (DenormalMode Mode) const
 Return true if it's known this can never be a positive value or a logical 0.
bool cannotBeOrderedGreaterEqZero (DenormalMode Mode) const
 Return true if it's know this can never be a negative value or a logical 0.
KnownFPClass intersectWith (const KnownFPClass &RHS) const
KnownFPClass unionWith (const KnownFPClass &RHS) const
KnownFPClass & operator|= (const KnownFPClass &RHS)
void knownNot (FPClassTest RuleOut)
void fneg ()
void fabs ()
LLVM_ABI KnownBits toKnownBits (const fltSemantics &FltSemantics) const
 Report known bits for a float with provided semantics.
bool signBitIsZeroOrNaN () const
 Return true if the sign bit must be 0, ignoring the sign of nans.
void signBitMustBeZero ()
 Assume the sign bit is zero.
void signBitMustBeOne ()
 Assume the sign bit is one.
void copysign (const KnownFPClass &Sign)
void propagateNonSNaN (const KnownFPClass &Src)
void propagateNonSNaN (const KnownFPClass &LHS, const KnownFPClass &RHS)
void propagateNonNaN (const KnownFPClass &Src)
void propagateNonNaN (const KnownFPClass &LHS, const KnownFPClass &RHS)
void resetAll ()

Static Public Member Functions

static LLVM_ABI KnownFPClass applyInputDenormalMode (const KnownFPClass &Src, DenormalMode Mode)
 Return the known classes of Src after passing through an input that may flush subnormals to zero according to Mode.
static LLVM_ABI KnownFPClass applyOutputDenormalMode (const KnownFPClass &Src, DenormalMode Mode)
 Return the known classes of Src after producing an output that may flush subnormals to zero according to Mode.
static KnownFPClass fneg (const KnownFPClass &Src)
static KnownFPClass fabs (const KnownFPClass &Src)
static LLVM_ABI KnownFPClass minMaxLike (const KnownFPClass &LHS, const KnownFPClass &RHS, MinMaxKind Kind, DenormalMode DenormMode=DenormalMode::getDynamic())
static LLVM_ABI KnownFPClass canonicalize (const KnownFPClass &Src, DenormalMode DenormMode=DenormalMode::getDynamic())
 Apply the canonicalize intrinsic to this value.
static LLVM_ABI KnownFPClass bitcast (const fltSemantics &FltSemantics, const KnownBits &Bits)
 Report known values for a bitcast into a float with provided semantics.
static LLVM_ABI KnownFPClass fadd (const KnownFPClass &LHS, const KnownFPClass &RHS, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for fadd.
static LLVM_ABI KnownFPClass fadd_self (const KnownFPClass &Src, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for fadd x, x.
static LLVM_ABI KnownFPClass fsub (const KnownFPClass &LHS, const KnownFPClass &RHS, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for fsub.
static LLVM_ABI KnownFPClass fmul (const KnownFPClass &LHS, const KnownFPClass &RHS, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for fmul.
static KnownFPClass square (const KnownFPClass &Src, DenormalMode Mode=DenormalMode::getDynamic())
static LLVM_ABI KnownFPClass fmul (const KnownFPClass &LHS, const APFloat &RHS, DenormalMode Mode=DenormalMode::getDynamic())
static LLVM_ABI KnownFPClass fdiv (const KnownFPClass &LHS, const KnownFPClass &RHS, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for fdiv.
static LLVM_ABI KnownFPClass fdiv_self (const KnownFPClass &Src, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for fdiv x, x.
static LLVM_ABI KnownFPClass frem (const KnownFPClass &LHS, const KnownFPClass &RHS, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for frem.
static LLVM_ABI KnownFPClass frem_self (const KnownFPClass &Src, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for frem x, x.
static LLVM_ABI KnownFPClass fma (const KnownFPClass &LHS, const KnownFPClass &RHS, const KnownFPClass &Addend, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for fma.
static LLVM_ABI KnownFPClass fmuladd (const KnownFPClass &LHS, const KnownFPClass &RHS, const KnownFPClass &Addend, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for fmuladd.
static LLVM_ABI KnownFPClass fma_square (const KnownFPClass &Squared, const KnownFPClass &Addend, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for fma squared, squared, addend.
static LLVM_ABI KnownFPClass fmuladd_square (const KnownFPClass &Squared, const KnownFPClass &Addend, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for fmuladd squared, squared, addend.
static LLVM_ABI KnownFPClass sqrt (const KnownFPClass &Src, DenormalMode Mode=DenormalMode::getDynamic())
 Propagate known class for sqrt.
static LLVM_ABI KnownFPClass log (const KnownFPClass &Src, DenormalMode Mode, bool IsMultiUnitFPType)
 Propagate known class for log/log2/log10.
static LLVM_ABI KnownFPClass exp (const KnownFPClass &Src)
 Report known values for exp, exp2 and exp10.
static LLVM_ABI KnownFPClass sin (const KnownFPClass &Src)
 Report known values for sin.
static LLVM_ABI KnownFPClass cos (const KnownFPClass &Src)
 Report known values for cos.
static LLVM_ABI KnownFPClass tan (const KnownFPClass &Src)
 Report known values for tan.
static LLVM_ABI KnownFPClass sinh (const KnownFPClass &Src)
 Report known values for sinh.
static LLVM_ABI KnownFPClass cosh (const KnownFPClass &Src)
 Report known values for cosh.
static LLVM_ABI KnownFPClass tanh (const KnownFPClass &Src)
 Report known values for tanh.
static LLVM_ABI KnownFPClass asin (const KnownFPClass &Src)
 Report known values for asin.
static LLVM_ABI KnownFPClass acos (const KnownFPClass &Src)
 Report known values for acos.
static LLVM_ABI KnownFPClass atan (const KnownFPClass &Src)
 Report known values for atan.
static LLVM_ABI KnownFPClass atan2 (const KnownFPClass &LHS, const KnownFPClass &RHS, DenormalMode Mode=DenormalMode::getDynamic())
 Report known values for atan2.
static KnownFPClass copysign (const KnownFPClass &KnownMag, const KnownFPClass &KnownSign)
static LLVM_ABI KnownFPClass fpext (const KnownFPClass &KnownSrc, const fltSemantics &DstTy, const fltSemantics &SrcTy)
 Propagate known class for fpext.
static LLVM_ABI KnownFPClass fptrunc (const KnownFPClass &KnownSrc)
 Propagate known class for fptrunc.
static LLVM_ABI KnownFPClass roundToIntegral (const KnownFPClass &Src, bool IsMultiUnitFPType, DenormalMode Mode=DenormalMode::getDynamic())
 Propagate known class for rounding intrinsics (rint, nearbyint, round, roundeven).
static LLVM_ABI KnownFPClass trunc (const KnownFPClass &Src, DenormalMode Mode=DenormalMode::getDynamic())
 Propagate known class for trunc.
static LLVM_ABI KnownFPClass floor (const KnownFPClass &Src, bool IsMultiUnitFPType, DenormalMode Mode=DenormalMode::getDynamic())
 Propagate known class for floor.
static LLVM_ABI KnownFPClass ceil (const KnownFPClass &Src, bool IsMultiUnitFPType, DenormalMode Mode=DenormalMode::getDynamic())
 Propagate known class for ceil.
static LLVM_ABI KnownFPClass frexp_mant (const KnownFPClass &Src, DenormalMode Mode=DenormalMode::getDynamic())
 Propagate known class for mantissa component of frexp.
static LLVM_ABI KnownFPClass ldexp (const KnownFPClass &Src, const APInt &ConstantRangeMin, const APInt &ConstantRangeMax, const fltSemantics &Flt, DenormalMode Mode=DenormalMode::getDynamic())
 Propagate known class for ldexp, assuming the exponent is known to be within [ConstantRangeMin, ConstantRangeMax].
static LLVM_ABI KnownFPClass ldexp (const KnownFPClass &Src, const KnownBits &ExpBits, const fltSemantics &Flt, DenormalMode Mode=DenormalMode::getDynamic())
static LLVM_ABI KnownFPClass pow (const KnownFPClass &LHS, const KnownFPClass &RHS)
 Propagate known class for pow.
static LLVM_ABI KnownFPClass powi (const KnownFPClass &Src, const KnownBits &N)
 Propagate known class for powi.

Public Attributes

FPClassTest KnownFPClassesValue = fcAllFlags
std::optional< bool > SignBitValue

Static Public Attributes

static constexpr FPClassTest OrderedLessThanZeroMask
static constexpr FPClassTest OrderedGreaterThanZeroMask

Detailed Description

Definition at line 27 of file KnownFPClass.h.

Member Enumeration Documentation

◆ MinMaxKind

enum class llvm::KnownFPClass::MinMaxKind
strong
Enumerator
minimum 
maximum 
minimumnum 
maximumnum 
minnum 
maxnum 

Definition at line 243 of file KnownFPClass.h.

Constructor & Destructor Documentation

◆ KnownFPClass() [1/2]

llvm::KnownFPClass::KnownFPClass ( FPClassTest Known = fcAllFlags,
std::optional< bool > Sign = {} )
inline

Definition at line 42 of file KnownFPClass.h.

References llvm::fcAllFlags, and llvm::Known.

Referenced by acos(), applyInputDenormalMode(), applyOutputDenormalMode(), asin(), atan(), atan2(), bitcast(), canonicalize(), ceil(), copysign(), copysign(), cos(), cosh(), exp(), fabs(), fadd(), fadd_self(), fdiv(), fdiv_self(), floor(), fma(), fma_square(), fmul(), fmul(), fmuladd(), fmuladd_square(), fneg(), fpext(), fptrunc(), frem(), frem_self(), frexp_mant(), fsub(), intersectWith(), ldexp(), ldexp(), log(), minMaxLike(), operator==(), operator|=(), pow(), powi(), propagateNonNaN(), propagateNonNaN(), propagateNonSNaN(), propagateNonSNaN(), resetAll(), roundToIntegral(), sin(), sinh(), sqrt(), square(), tan(), tanh(), trunc(), and unionWith().

◆ KnownFPClass() [2/2]

KnownFPClass::KnownFPClass ( const APFloat & C)

Definition at line 21 of file KnownFPClass.cpp.

References C(), KnownFPClassesValue, and setSignBit().

Member Function Documentation

◆ acos()

KnownFPClass KnownFPClass::acos ( const KnownFPClass & Src)
static

Report known values for acos.

Definition at line 1029 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNegative, llvm::fcPosNormal, llvm::fcSubnormal, llvm::fcZero, isKnownNever(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ applyInputDenormalMode()

KnownFPClass KnownFPClass::applyInputDenormalMode ( const KnownFPClass & Src,
DenormalMode Mode )
static

Return the known classes of Src after passing through an input that may flush subnormals to zero according to Mode.

Definition at line 26 of file KnownFPClass.cpp.

References llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosSubnormal, llvm::fcPosZero, llvm::fcSubnormal, getKnownFPClasses(), llvm::DenormalMode::IEEE, llvm::Known, KnownFPClass(), llvm_unreachable, llvm::DenormalMode::PositiveZero, and llvm::DenormalMode::PreserveSign.

Referenced by atan2(), fadd(), fadd_self(), fdiv(), fmul(), fsub(), isKnownNeverLogicalNegZero(), isKnownNeverLogicalPosZero(), isKnownNeverLogicalZero(), ldexp(), and minMaxLike().

◆ applyOutputDenormalMode()

KnownFPClass KnownFPClass::applyOutputDenormalMode ( const KnownFPClass & Src,
DenormalMode Mode )
static

Return the known classes of Src after producing an output that may flush subnormals to zero according to Mode.

Definition at line 59 of file KnownFPClass.cpp.

References llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosSubnormal, llvm::fcPosZero, llvm::fcSubnormal, getKnownFPClasses(), llvm::DenormalMode::IEEE, llvm::Known, KnownFPClass(), llvm_unreachable, llvm::DenormalMode::PositiveZero, and llvm::DenormalMode::PreserveSign.

Referenced by atan2(), fadd(), fadd_self(), fdiv(), fmul(), fsub(), ldexp(), and minMaxLike().

◆ asin()

KnownFPClass KnownFPClass::asin ( const KnownFPClass & Src)
static

Report known values for asin.

Definition at line 1009 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNegFinite, llvm::fcPosNormal, llvm::fcPosSubnormal, isKnownNever(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ atan()

KnownFPClass KnownFPClass::atan ( const KnownFPClass & Src)
static

Report known values for atan.

Definition at line 1050 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNegInf, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosInf, llvm::fcPosNormal, llvm::fcPosSubnormal, isKnownNever(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ atan2()

KnownFPClass KnownFPClass::atan2 ( const KnownFPClass & LHS,
const KnownFPClass & RHS,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for atan2.

Definition at line 1075 of file KnownFPClass.cpp.

References applyInputDenormalMode(), applyOutputDenormalMode(), llvm::fcInf, llvm::fcNegative, llvm::fcPositive, llvm::fcSubnormal, llvm::fcZero, isKnownNever(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ bitcast()

KnownFPClass KnownFPClass::bitcast ( const fltSemantics & FltSemantics,
const KnownBits & Bits )
static

Report known values for a bitcast into a float with provided semantics.

Definition at line 234 of file KnownFPClass.cpp.

References assert(), llvm::BitWidth, llvm::fcInf, llvm::fcNan, llvm::fcNormal, llvm::fcQNan, llvm::fcSNan, llvm::fcSubnormal, llvm::fcZero, llvm::APInt::getBitsSet(), llvm::APInt::getLowBitsSet(), isZero(), llvm::Known, KnownFPClass(), llvm_unreachable, llvm::fltSemantics::precision, llvm::APFloatBase::S_BFloat, llvm::APFloatBase::S_IEEEdouble, llvm::APFloatBase::S_IEEEhalf, llvm::APFloatBase::S_IEEEquad, llvm::APFloatBase::S_IEEEsingle, llvm::APFloatBase::S_x87DoubleExtended, llvm::APFloatBase::SemanticsToEnum(), and llvm::fltSemantics::sizeInBits.

Referenced by computeKnownFPClass(), llvm::SelectionDAG::computeKnownFPClass(), and tryReduceF64CompareToHiHalf().

◆ cannotBeOrderedGreaterEqZero()

bool llvm::KnownFPClass::cannotBeOrderedGreaterEqZero ( DenormalMode Mode) const
inline

Return true if it's know this can never be a negative value or a logical 0. 

 NaN --> true

x >= -0 --> false nsub --> true if mode is ieee, false otherwise. x < -0 --> true

Definition at line 159 of file KnownFPClass.h.

References llvm::fcPositive, isKnownNever(), isKnownNeverLogicalNegZero(), and Mode.

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

◆ cannotBeOrderedGreaterThanZero()

bool llvm::KnownFPClass::cannotBeOrderedGreaterThanZero ( ) const
inline

Return true if we can prove that the analyzed floating-point value is either NaN or never greater than -0.0.

NaN --> true +0 --> true -0 --> true x > +0 --> false x < -0 --> true

Definition at line 137 of file KnownFPClass.h.

References isKnownNever(), and OrderedGreaterThanZeroMask.

Referenced by fadd_impl(), and ldexp().

◆ cannotBeOrderedLessEqZero()

bool llvm::KnownFPClass::cannotBeOrderedLessEqZero ( DenormalMode Mode) const
inline

Return true if it's known this can never be a positive value or a logical 0. 

 NaN --> true

x <= +0 --> false psub --> true if mode is ieee, false otherwise. x > +0 --> true

Definition at line 148 of file KnownFPClass.h.

References llvm::fcNegative, isKnownNever(), isKnownNeverLogicalPosZero(), and Mode.

◆ cannotBeOrderedLessThanZero()

bool llvm::KnownFPClass::cannotBeOrderedLessThanZero ( ) const
inline

Return true if we can prove that the analyzed floating-point value is either NaN or never less than -0.0. 

 NaN --> true
  +0 --> true
  -0 --> true

x > +0 --> true x < -0 --> false

Definition at line 126 of file KnownFPClass.h.

References isKnownNever(), and OrderedLessThanZeroMask.

Referenced by computeKnownFPClass(), fadd_impl(), fptrunc(), ldexp(), log(), simplifyFCmpInst(), simplifyUnaryIntrinsic(), and sqrt().

◆ canonicalize()

KnownFPClass KnownFPClass::canonicalize ( const KnownFPClass & Src,
DenormalMode DenormMode = DenormalMode::getDynamic() )
static

Apply the canonicalize intrinsic to this value.

Definition at line 182 of file KnownFPClass.cpp.

References llvm::fcNan, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosSubnormal, llvm::fcPosZero, llvm::fcQNan, llvm::fcSNan, llvm::fcSubnormal, llvm::fcZero, llvm::DenormalMode::getIEEE(), getKnownFPClasses(), llvm::DenormalMode::getPreserveSign(), llvm::DenormalMode::IEEE, llvm::DenormalMode::Input, llvm::DenormalMode::inputsAreZero(), isKnownNever(), isKnownNeverNaN(), llvm::Known, KnownFPClass(), llvm::DenormalMode::Output, llvm::DenormalMode::outputsAreZero(), and llvm::DenormalMode::PositiveZero.

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ ceil()

KnownFPClass KnownFPClass::ceil ( const KnownFPClass & Src,
bool IsMultiUnitFPType,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Propagate known class for ceil.

IsMultiUnitFPType if this is for a multi-unit floating-point type.

Definition at line 1204 of file KnownFPClass.cpp.

References llvm::fcNegInf, isKnownNeverNegInfinity(), llvm::Known, KnownFPClass(), and roundToIntegral().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ copysign() [1/2]

KnownFPClass llvm::KnownFPClass::copysign ( const KnownFPClass & KnownMag,
const KnownFPClass & KnownSign )
inlinestatic

Definition at line 432 of file KnownFPClass.h.

References llvm::Known, and KnownFPClass().

◆ copysign() [2/2]

void llvm::KnownFPClass::copysign ( const KnownFPClass & Sign)
inline

Definition at line 408 of file KnownFPClass.h.

References llvm::fcInf, llvm::fcNan, llvm::fcNegative, llvm::fcNormal, llvm::fcPositive, llvm::fcSubnormal, llvm::fcZero, getKnownFPClasses(), getSignBit(), isKnownNever(), KnownFPClass(), setKnownFPClasses(), and setSignBit().

Referenced by llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), and llvm::InstCombinerImpl::SimplifyMultipleUseDemandedFPClass().

◆ cos()

KnownFPClass KnownFPClass::cos ( const KnownFPClass & Src)
static

Report known values for cos.

Definition at line 935 of file KnownFPClass.cpp.

References KnownFPClass(), and sin().

Referenced by computeKnownFPClass().

◆ cosh()

KnownFPClass KnownFPClass::cosh ( const KnownFPClass & Src)
static

Report known values for cosh.

Definition at line 972 of file KnownFPClass.cpp.

References llvm::fcNegative, llvm::fcSubnormal, llvm::fcZero, llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ exp()

KnownFPClass KnownFPClass::exp ( const KnownFPClass & Src)
static

Report known values for exp, exp2 and exp10.

This function assumes that exp10(-1.0) = +0.1 and exp10(+1.0) = +10.0 are both finite normal values, which holds for formats with a corresponding LLVM IR type (e.g. does not hold for Float4E2M1FN).

Definition at line 850 of file KnownFPClass.cpp.

References llvm::fcNegative, llvm::fcNegInf, llvm::fcNegNormal, llvm::fcPosInf, llvm::fcPosNormal, llvm::fcPosSubnormal, llvm::fcPosZero, isKnownNever(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ fabs() [1/2]

void llvm::KnownFPClass::fabs ( )
inline

Definition at line 220 of file KnownFPClass.h.

References llvm::fcNegInf, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosInf, llvm::fcPosNormal, llvm::fcPosSubnormal, llvm::fcPosZero, getKnownFPClasses(), setKnownFPClasses(), and signBitMustBeZero().

Referenced by simplifyDemandedFPClassFabs(), and simplifyDemandedFPClassFnegFabs().

◆ fabs() [2/2]

KnownFPClass llvm::KnownFPClass::fabs ( const KnownFPClass & Src)
inlinestatic

Definition at line 236 of file KnownFPClass.h.

References llvm::Known, and KnownFPClass().

◆ fadd()

KnownFPClass KnownFPClass::fadd ( const KnownFPClass & LHS,
const KnownFPClass & RHS,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for fadd.

Definition at line 553 of file KnownFPClass.cpp.

References applyInputDenormalMode(), applyOutputDenormalMode(), fadd_impl(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), fmuladd(), fmuladd_square(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ fadd_self()

KnownFPClass KnownFPClass::fadd_self ( const KnownFPClass & Src,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for fadd x, x.

Definition at line 564 of file KnownFPClass.cpp.

References applyInputDenormalMode(), applyOutputDenormalMode(), fadd_impl(), llvm::fcNegSubnormal, llvm::fcPosSubnormal, llvm::fcPosZero, isKnownNever(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ fdiv()

KnownFPClass KnownFPClass::fdiv ( const KnownFPClass & LHS,
const KnownFPClass & RHS,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for fdiv.

Definition at line 666 of file KnownFPClass.cpp.

References applyInputDenormalMode(), applyOutputDenormalMode(), llvm::fcFinite, llvm::fcInf, llvm::fcNan, llvm::fcNegative, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNormal, llvm::fcPositive, llvm::fcPosNormal, llvm::fcPosSubnormal, llvm::fcSubnormal, llvm::fcZero, isKnownAlways(), isKnownNever(), isKnownNeverInfinity(), isKnownNeverNaN(), isKnownNeverZero(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ fdiv_self()

KnownFPClass KnownFPClass::fdiv_self ( const KnownFPClass & Src,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for fdiv x, x.

Definition at line 718 of file KnownFPClass.cpp.

References llvm::fcNan, llvm::fcPosNormal, isKnownNeverInfOrNaN(), isKnownNeverLogicalZero(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ floor()

KnownFPClass KnownFPClass::floor ( const KnownFPClass & Src,
bool IsMultiUnitFPType,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Propagate known class for floor.

IsMultiUnitFPType if this is for a multi-unit floating-point type.

Definition at line 1193 of file KnownFPClass.cpp.

References llvm::fcPosInf, isKnownNeverPosInfinity(), llvm::Known, KnownFPClass(), and roundToIntegral().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ fma()

KnownFPClass KnownFPClass::fma ( const KnownFPClass & LHS,
const KnownFPClass & RHS,
const KnownFPClass & Addend,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for fma.

Definition at line 790 of file KnownFPClass.cpp.

References fadd_impl(), llvm::fcSNan, fmul(), isKnownNever(), llvm::Known, KnownFPClass(), and llvm::Mul.

Referenced by computeKnownFPClass(), fmuladd(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ fma_square()

KnownFPClass KnownFPClass::fma_square ( const KnownFPClass & Squared,
const KnownFPClass & Addend,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for fma squared, squared, addend.

Definition at line 822 of file KnownFPClass.cpp.

References fadd_impl(), llvm::fcNan, llvm::fcNegInf, isKnownNever(), llvm::Known, KnownFPClass(), and square().

Referenced by computeKnownFPClass(), fmuladd_square(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ fmul() [1/2]

KnownFPClass KnownFPClass::fmul ( const KnownFPClass & LHS,
const APFloat & RHS,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Definition at line 638 of file KnownFPClass.cpp.

References llvm::APFloatBase::cmpEqual, llvm::APFloat::compareAbsoluteValue(), llvm::fcInf, llvm::fcSubnormal, fmul(), llvm::APFloat::getOne(), llvm::APFloat::getSemantics(), llvm::ilogb(), isKnownNever(), llvm::Known, KnownFPClass(), and llvm::APFloatBase::semanticsPrecision().

◆ fmul() [2/2]

KnownFPClass KnownFPClass::fmul ( const KnownFPClass & LHS,
const KnownFPClass & RHS,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for fmul.

Definition at line 597 of file KnownFPClass.cpp.

References applyInputDenormalMode(), applyOutputDenormalMode(), llvm::fcInf, llvm::fcNan, llvm::fcNegative, llvm::fcNormal, llvm::fcPositive, llvm::fcSubnormal, llvm::fcZero, isKnownAlways(), isKnownNever(), isKnownNeverInfinity(), isKnownNeverNaN(), isKnownNeverZero(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), fma(), fmul(), fmuladd(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), and square().

◆ fmuladd()

KnownFPClass KnownFPClass::fmuladd ( const KnownFPClass & LHS,
const KnownFPClass & RHS,
const KnownFPClass & Addend,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for fmuladd.

Definition at line 811 of file KnownFPClass.cpp.

References fadd(), fma(), fmul(), and KnownFPClass().

Referenced by computeKnownFPClass().

◆ fmuladd_square()

KnownFPClass KnownFPClass::fmuladd_square ( const KnownFPClass & Squared,
const KnownFPClass & Addend,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for fmuladd squared, squared, addend.

Definition at line 842 of file KnownFPClass.cpp.

References fadd(), fma_square(), KnownFPClass(), and square().

Referenced by computeKnownFPClass().

◆ fneg() [1/2]

void llvm::KnownFPClass::fneg ( )
inline

Definition at line 208 of file KnownFPClass.h.

References llvm::fneg(), getKnownFPClasses(), getSignBit(), setKnownFPClasses(), and setSignBit().

Referenced by fsub(), and simplifyDemandedFPClassFnegFabs().

◆ fneg() [2/2]

KnownFPClass llvm::KnownFPClass::fneg ( const KnownFPClass & Src)
inlinestatic

Definition at line 214 of file KnownFPClass.h.

References llvm::Known, and KnownFPClass().

◆ fpext()

KnownFPClass KnownFPClass::fpext ( const KnownFPClass & KnownSrc,
const fltSemantics & DstTy,
const fltSemantics & SrcTy )
static

Propagate known class for fpext.

Definition at line 1107 of file KnownFPClass.cpp.

References llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcPosNormal, llvm::fcPosSubnormal, llvm::fcSubnormal, llvm::APFloatBase::isRepresentableAsNormalIn(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ fptrunc()

KnownFPClass KnownFPClass::fptrunc ( const KnownFPClass & KnownSrc)
static

Propagate known class for fptrunc.

Definition at line 1129 of file KnownFPClass.cpp.

References cannotBeOrderedLessThanZero(), llvm::Known, KnownFPClass(), and OrderedLessThanZeroMask.

Referenced by computeKnownFPClassForFPTrunc(), and simplifyDemandedUseFPClassFPTrunc().

◆ frem()

KnownFPClass KnownFPClass::frem ( const KnownFPClass & LHS,
const KnownFPClass & RHS,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for frem.

Definition at line 731 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNan, llvm::fcNegFinite, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosFinite, llvm::fcPosNormal, llvm::fcPosSubnormal, llvm::fcPosZero, isKnownNever(), isKnownNeverInfOrNaN(), isKnownNeverLogicalPosZero(), isKnownNeverLogicalZero(), isKnownNeverNaN(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ frem_self()

KnownFPClass KnownFPClass::frem_self ( const KnownFPClass & Src,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for frem x, x.

Definition at line 769 of file KnownFPClass.cpp.

References llvm::fcNan, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosNormal, llvm::fcPosSubnormal, llvm::fcPosZero, llvm::fcZero, isKnownNever(), isKnownNeverInfOrNaN(), isKnownNeverLogicalZero(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ frexp_mant()

KnownFPClass KnownFPClass::frexp_mant ( const KnownFPClass & Src,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Propagate known class for mantissa component of frexp.

Definition at line 1215 of file KnownFPClass.cpp.

References llvm::fcNegInf, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosInf, llvm::fcPosNormal, llvm::fcPosSubnormal, llvm::fcPosZero, llvm::fcSubnormal, isKnownNever(), isKnownNeverLogicalNegZero(), isKnownNeverLogicalPosZero(), isKnownNeverNegInfinity(), isKnownNeverPosInfinity(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ fsub()

KnownFPClass KnownFPClass::fsub ( const KnownFPClass & LHS,
const KnownFPClass & RHS,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Report known values for fsub.

Definition at line 582 of file KnownFPClass.cpp.

References applyInputDenormalMode(), applyOutputDenormalMode(), fadd_impl(), fneg(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ getKnownFPClasses()

FPClassTest llvm::KnownFPClass::getKnownFPClasses ( ) const
inline

Floating-point classes the value could be one of.

Definition at line 32 of file KnownFPClass.h.

References KnownFPClassesValue.

Referenced by applyInputDenormalMode(), applyOutputDenormalMode(), canonicalize(), computeKnownFPClass(), copysign(), fabs(), fneg(), intersectWith(), isKnownNever(), isUnknown(), knownNot(), ldexp(), minMaxLike(), operator==(), operator|=(), printGISelValueTracking(), signBitMustBeOne(), signBitMustBeZero(), simplifyDemandedFPClassMinMax(), toKnownBits(), and unionWith().

◆ getSignBit()

std::optional< bool > llvm::KnownFPClass::getSignBit ( ) const
inline

std::nullopt if the sign bit is unknown, true if the sign bit is definitely set or false if the sign bit is definitely unset.

Definition at line 38 of file KnownFPClass.h.

References SignBitValue.

Referenced by computeKnownFPClass(), copysign(), fneg(), intersectWith(), isUnknown(), knownNot(), operator==(), operator|=(), printGISelValueTracking(), simplifyDemandedFPClassCopysignMag(), simplifyDemandedFPClassFabs(), simplifyDemandedFPClassFnegFabs(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), llvm::InstCombinerImpl::SimplifyMultipleUseDemandedFPClass(), simplifyUnaryIntrinsic(), toKnownBits(), and unionWith().

◆ intersectWith()

KnownFPClass llvm::KnownFPClass::intersectWith ( const KnownFPClass & RHS) const
inline

Definition at line 173 of file KnownFPClass.h.

References getKnownFPClasses(), getSignBit(), KnownFPClass(), and RHS.

Referenced by llvm::SelectionDAG::computeKnownFPClass(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), and llvm::InstCombinerImpl::SimplifyMultipleUseDemandedFPClass().

◆ isKnownAlways()

bool llvm::KnownFPClass::isKnownAlways ( FPClassTest Mask) const
inline

Definition at line 56 of file KnownFPClass.h.

References isKnownNever().

Referenced by fdiv(), fmul(), isKnownAlwaysNaN(), simplifyDemandedFPClassCopysignMag(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ isKnownAlwaysNaN()

bool llvm::KnownFPClass::isKnownAlwaysNaN ( ) const
inline

Return true if it's known this must always be a nan.

Definition at line 66 of file KnownFPClass.h.

References llvm::fcNan, and isKnownAlways().

Referenced by simplifyFCmpInst().

◆ isKnownNever()

bool llvm::KnownFPClass::isKnownNever ( FPClassTest Mask) const
inline

Return true if it's known this can never be one of the mask entries.

Definition at line 52 of file KnownFPClass.h.

References llvm::fcNone, and getKnownFPClasses().

Referenced by acos(), addNoUndefAttrs(), asin(), atan(), atan2(), cannotBeOrderedGreaterEqZero(), cannotBeOrderedGreaterThanZero(), cannotBeOrderedLessEqZero(), cannotBeOrderedLessThanZero(), canonicalize(), computeKnownBitsFromOperator(), computeKnownFPClass(), copysign(), exp(), fadd_impl(), fadd_self(), fdiv(), fma(), fma_square(), fmul(), fmul(), foldFPtoI(), frem(), frem_self(), frexp_mant(), isKnownAlways(), isKnownNeverInfinity(), isKnownNeverInfOrNaN(), llvm::GISelValueTracking::isKnownNeverNaN(), isKnownNeverNaN(), isKnownNeverNegInfinity(), isKnownNeverNegSubnormal(), isKnownNeverNegZero(), isKnownNeverPosInfinity(), isKnownNeverPosSubnormal(), isKnownNeverPosZero(), isKnownNeverSubnormal(), isKnownNeverZero(), knownNot(), ldexp(), pow(), powi(), roundToIntegral(), signBitIsZeroOrNaN(), simplifyDemandedFPClassFabs(), simplifyDemandedFPClassFnegFabs(), simplifyDemandedFPClassMinMax(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), llvm::InstCombinerImpl::SimplifyMultipleUseDemandedFPClass(), simplifyX86FPMaxMin(), sinh(), tanh(), and toKnownBits().

◆ isKnownNeverInfinity()

bool llvm::KnownFPClass::isKnownNeverInfinity ( ) const
inline

Return true if it's known this can never be an infinity.

Definition at line 69 of file KnownFPClass.h.

References llvm::fcInf, and isKnownNever().

Referenced by fdiv(), fmul(), inferFastMathValueFlags(), sin(), and tan().

◆ isKnownNeverInfOrNaN()

bool llvm::KnownFPClass::isKnownNeverInfOrNaN ( ) const
inline

Return true if it's known this can never be an infinity or nan.

Definition at line 72 of file KnownFPClass.h.

References llvm::fcInf, llvm::fcNan, and isKnownNever().

Referenced by llvm::GCNTTIImpl::canSimplifyLegacyMulToMul(), llvm::computeConstantRange(), computeKnownFPClass(), fdiv_self(), frem(), frem_self(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ isKnownNeverLogicalNegZero()

bool KnownFPClass::isKnownNeverLogicalNegZero ( DenormalMode Mode) const

Return true if it's known this can never be interpreted as a negative zero.

Definition at line 96 of file KnownFPClass.cpp.

References applyInputDenormalMode(), and isKnownNeverNegZero().

Referenced by cannotBeOrderedGreaterEqZero(), computeKnownFPClass(), frexp_mant(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), and sqrt().

◆ isKnownNeverLogicalPosZero()

bool KnownFPClass::isKnownNeverLogicalPosZero ( DenormalMode Mode) const

Return true if it's known this can never be interpreted as a positive zero.

Definition at line 100 of file KnownFPClass.cpp.

References applyInputDenormalMode(), and isKnownNeverPosZero().

Referenced by cannotBeOrderedLessEqZero(), computeKnownFPClass(), frem(), frexp_mant(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ isKnownNeverLogicalZero()

bool KnownFPClass::isKnownNeverLogicalZero ( DenormalMode Mode) const

Return true if it's known this can never be interpreted as a zero.

This extends isKnownNeverZero to cover the case where the assumed floating-point mode for the function interprets denormals as zero.

Definition at line 92 of file KnownFPClass.cpp.

References applyInputDenormalMode(), and isKnownNeverZero().

Referenced by llvm::GCNTTIImpl::canSimplifyLegacyMulToMul(), llvm::computeConstantRange(), fdiv_self(), frem(), frem_self(), log(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ isKnownNeverNaN()

bool llvm::KnownFPClass::isKnownNeverNaN ( ) const
inline

Return true if it's known this can never be a nan.

Definition at line 63 of file KnownFPClass.h.

References llvm::fcNan, and isKnownNever().

Referenced by canonicalize(), computeKnownFPClass(), fadd_impl(), fdiv(), fmul(), llvm::InstCombinerImpl::foldSelectIntoOp(), frem(), inferFastMathValueFlags(), llvm::GISelValueTracking::isKnownNeverNaN(), log(), minMaxLike(), pow(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), simplifyFCmpInst(), simplifyUnaryIntrinsic(), sin(), sqrt(), tan(), and tryReduceF64CompareToHiHalf().

◆ isKnownNeverNegInfinity()

bool llvm::KnownFPClass::isKnownNeverNegInfinity ( ) const
inline

Return true if it's known this can never be -infinity.

Definition at line 78 of file KnownFPClass.h.

References llvm::fcNegInf, and isKnownNever().

Referenced by ceil(), frexp_mant(), ldexp(), roundToIntegral(), and trunc().

◆ isKnownNeverNegSubnormal()

bool llvm::KnownFPClass::isKnownNeverNegSubnormal ( ) const
inline

Return true if it's known this can never be a negative subnormal.

Definition at line 87 of file KnownFPClass.h.

References llvm::fcNegSubnormal, and isKnownNever().

Referenced by ldexp().

◆ isKnownNeverNegZero()

bool llvm::KnownFPClass::isKnownNeverNegZero ( ) const
inline

Return true if it's known this can never be a negative zero.

This means a literal -0 and does not include denormal inputs implicitly treated as -0.

Definition at line 98 of file KnownFPClass.h.

References llvm::fcNegZero, and isKnownNever().

Referenced by isKnownNeverLogicalNegZero(), ldexp(), and tanh().

◆ isKnownNeverPosInfinity()

bool llvm::KnownFPClass::isKnownNeverPosInfinity ( ) const
inline

Return true if it's known this can never be +infinity.

Definition at line 75 of file KnownFPClass.h.

References llvm::fcPosInf, and isKnownNever().

Referenced by computeKnownFPClass(), floor(), frexp_mant(), ldexp(), log(), roundToIntegral(), sqrt(), and trunc().

◆ isKnownNeverPosSubnormal()

bool llvm::KnownFPClass::isKnownNeverPosSubnormal ( ) const
inline

Return true if it's known this can never be a positive subnormal.

Definition at line 84 of file KnownFPClass.h.

References llvm::fcPosSubnormal, and isKnownNever().

Referenced by ldexp().

◆ isKnownNeverPosZero()

bool llvm::KnownFPClass::isKnownNeverPosZero ( ) const
inline

Return true if it's known this can never be a literal positive zero.

Definition at line 94 of file KnownFPClass.h.

References llvm::fcPosZero, and isKnownNever().

Referenced by isKnownNeverLogicalPosZero(), and ldexp().

◆ isKnownNeverSubnormal()

bool llvm::KnownFPClass::isKnownNeverSubnormal ( ) const
inline

Return true if it's known this can never be a subnormal.

Definition at line 81 of file KnownFPClass.h.

References llvm::fcSubnormal, and isKnownNever().

Referenced by llvm::computeConstantRange(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ isKnownNeverZero()

bool llvm::KnownFPClass::isKnownNeverZero ( ) const
inline

Return true if it's known this can never be a zero.

This means a literal [+-]0, and does not include denormal inputs implicitly treated as [+-]0.

Definition at line 91 of file KnownFPClass.h.

References llvm::fcZero, and isKnownNever().

Referenced by fdiv(), fmul(), isKnownNeverLogicalZero(), and llvm::LegalizerHelper::lowerFMinimumMaximum().

◆ isUnknown()

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

Definition at line 58 of file KnownFPClass.h.

References llvm::fcAllFlags, getKnownFPClasses(), and getSignBit().

Referenced by llvm::adjustKnownFPClassForSelectArm(), computeKnownFPClass(), llvm::SelectionDAG::computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyMultipleUseDemandedFPClass().

◆ knownNot()

void llvm::KnownFPClass::knownNot ( FPClassTest RuleOut)
inline

Definition at line 198 of file KnownFPClass.h.

References llvm::fcNan, llvm::fcNegative, llvm::fcPositive, getKnownFPClasses(), getSignBit(), isKnownNever(), setKnownFPClasses(), and setSignBit().

Referenced by computeKnownFPClass(), computeKnownFPClassFromCond(), propagateNonNaN(), propagateNonNaN(), propagateNonSNaN(), propagateNonSNaN(), simplifyDemandedFPClassFabs(), simplifyDemandedFPClassFnegFabs(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), and llvm::InstCombinerImpl::SimplifyMultipleUseDemandedFPClass().

◆ ldexp() [1/2]

KnownFPClass KnownFPClass::ldexp ( const KnownFPClass & Src,
const APInt & ConstantRangeMin,
const APInt & ConstantRangeMax,
const fltSemantics & Flt,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Propagate known class for ldexp, assuming the exponent is known to be within [ConstantRangeMin, ConstantRangeMax].

Definition at line 1246 of file KnownFPClass.cpp.

References applyInputDenormalMode(), applyOutputDenormalMode(), cannotBeOrderedGreaterThanZero(), cannotBeOrderedLessThanZero(), llvm::fcNan, llvm::fcNegative, llvm::fcNegInf, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosInf, llvm::fcPositive, llvm::fcPosSubnormal, llvm::fcPosZero, llvm::fcSubnormal, getKnownFPClasses(), isKnownNever(), isKnownNeverNegInfinity(), isKnownNeverNegSubnormal(), isKnownNeverNegZero(), isKnownNeverPosInfinity(), isKnownNeverPosSubnormal(), isKnownNeverPosZero(), llvm::APInt::isNonNegative(), llvm::APInt::isNonPositive(), llvm::APInt::isZero(), llvm::Known, KnownFPClass(), OrderedGreaterThanZeroMask, OrderedLessThanZeroMask, llvm::APFloatBase::PPCDoubleDouble(), llvm::APFloatBase::semanticsPrecision(), and llvm::APInt::sge().

Referenced by computeKnownFPClass(), ldexp(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ ldexp() [2/2]

KnownFPClass KnownFPClass::ldexp ( const KnownFPClass & Src,
const KnownBits & ExpBits,
const fltSemantics & Flt,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Definition at line 1304 of file KnownFPClass.cpp.

References llvm::KnownBits::getSignedMaxValue(), llvm::KnownBits::getSignedMinValue(), KnownFPClass(), and ldexp().

◆ log()

KnownFPClass KnownFPClass::log ( const KnownFPClass & Src,
DenormalMode Mode,
bool IsMultiUnitFPType )
static

Propagate known class for log/log2/log10.

IsMultiUnitFPType if this is for a multi-unit floating-point type.

Definition at line 874 of file KnownFPClass.cpp.

References cannotBeOrderedLessThanZero(), llvm::fcNan, llvm::fcNegInf, llvm::fcNegZero, llvm::fcPosInf, llvm::fcSubnormal, isKnownNeverLogicalZero(), isKnownNeverNaN(), isKnownNeverPosInfinity(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ minMaxLike()

KnownFPClass KnownFPClass::minMaxLike ( const KnownFPClass & LHS,
const KnownFPClass & RHS,
MinMaxKind Kind,
DenormalMode DenormMode = DenormalMode::getDynamic() )
static

Definition at line 104 of file KnownFPClass.cpp.

References applyInputDenormalMode(), applyOutputDenormalMode(), llvm::fcNan, getKnownFPClasses(), isKnownNeverNaN(), llvm::Known, KnownFPClass(), maximum, maximumnum, maxnum, minimum, minimumnum, minnum, llvm::orderedStrictlyGreater(), and llvm::orderedStrictlyLess().

Referenced by computeKnownFPClass(), and simplifyDemandedFPClassMinMax().

◆ operator==()

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

Definition at line 46 of file KnownFPClass.h.

References getKnownFPClasses(), getSignBit(), KnownFPClass(), and llvm::Other.

◆ operator|=()

KnownFPClass & llvm::KnownFPClass::operator|= ( const KnownFPClass & RHS)
inline

Definition at line 190 of file KnownFPClass.h.

References getKnownFPClasses(), getSignBit(), KnownFPClass(), RHS, setKnownFPClasses(), and setSignBit().

◆ pow()

KnownFPClass KnownFPClass::pow ( const KnownFPClass & LHS,
const KnownFPClass & RHS )
static

Propagate known class for pow.

Definition at line 1311 of file KnownFPClass.cpp.

References llvm::fcNan, llvm::fcNegative, llvm::fcNegInf, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosNormal, isKnownNever(), isKnownNeverNaN(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ powi()

KnownFPClass KnownFPClass::powi ( const KnownFPClass & Src,
const KnownBits & N )
static

Propagate known class for powi.

Definition at line 1353 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNan, llvm::fcNegative, llvm::fcNegInf, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcNormal, llvm::fcPosNormal, llvm::fcSNan, llvm::fcSubnormal, llvm::fcZero, llvm::KnownBits::getSignedMaxValue(), llvm::KnownBits::getSignedMinValue(), llvm::KnownBits::isEven(), isKnownNever(), llvm::APInt::isNegative(), llvm::KnownBits::isNegative(), llvm::KnownBits::isNonNegative(), llvm::APInt::isStrictlyPositive(), llvm::APInt::isZero(), llvm::KnownBits::isZero(), llvm::Known, KnownFPClass(), llvm::APInt::sgt(), llvm::APInt::slt(), and llvm::KnownBits::Zero.

Referenced by computeKnownFPClass().

◆ propagateNonNaN() [1/2]

void llvm::KnownFPClass::propagateNonNaN ( const KnownFPClass & LHS,
const KnownFPClass & RHS )
inline

Definition at line 460 of file KnownFPClass.h.

References llvm::fcNan, KnownFPClass(), knownNot(), LHS, propagateNonSNaN(), and RHS.

◆ propagateNonNaN() [2/2]

void llvm::KnownFPClass::propagateNonNaN ( const KnownFPClass & Src)
inline

Definition at line 454 of file KnownFPClass.h.

References llvm::fcNan, KnownFPClass(), knownNot(), and propagateNonSNaN().

◆ propagateNonSNaN() [1/2]

void llvm::KnownFPClass::propagateNonSNaN ( const KnownFPClass & LHS,
const KnownFPClass & RHS )
inline

Definition at line 446 of file KnownFPClass.h.

References llvm::fcSNan, KnownFPClass(), knownNot(), LHS, and RHS.

◆ propagateNonSNaN() [2/2]

void llvm::KnownFPClass::propagateNonSNaN ( const KnownFPClass & Src)
inline

Definition at line 440 of file KnownFPClass.h.

References llvm::fcSNan, KnownFPClass(), and knownNot().

Referenced by propagateNonNaN(), and propagateNonNaN().

◆ resetAll()

void llvm::KnownFPClass::resetAll ( )
inline

Definition at line 524 of file KnownFPClass.h.

References KnownFPClass().

◆ roundToIntegral()

KnownFPClass KnownFPClass::roundToIntegral ( const KnownFPClass & Src,
bool IsMultiUnitFPType,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Propagate known class for rounding intrinsics (rint, nearbyint, round, roundeven).

IsMultiUnitFPType if this is for a multi-unit floating-point type.

Definition at line 1143 of file KnownFPClass.cpp.

References llvm::fcNegFinite, llvm::fcNegInf, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosFinite, llvm::fcPosInf, llvm::fcPosNormal, llvm::fcPosSubnormal, llvm::fcPosZero, llvm::fcSubnormal, isKnownNever(), isKnownNeverNegInfinity(), isKnownNeverPosInfinity(), llvm::Known, and KnownFPClass().

Referenced by ceil(), computeKnownFPClass(), floor(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), and trunc().

◆ setKnownFPClasses()

void llvm::KnownFPClass::setKnownFPClasses ( FPClassTest Classes)
inline

Definition at line 34 of file KnownFPClass.h.

References KnownFPClassesValue.

Referenced by copysign(), fabs(), fneg(), knownNot(), operator|=(), signBitMustBeOne(), and signBitMustBeZero().

◆ setSignBit()

void llvm::KnownFPClass::setSignBit ( std::optional< bool > Sign)
inline

Definition at line 40 of file KnownFPClass.h.

References SignBitValue.

Referenced by copysign(), fneg(), KnownFPClass(), knownNot(), operator|=(), signBitMustBeOne(), and signBitMustBeZero().

◆ signBitIsZeroOrNaN()

bool llvm::KnownFPClass::signBitIsZeroOrNaN ( ) const
inline

Return true if the sign bit must be 0, ignoring the sign of nans.

Definition at line 394 of file KnownFPClass.h.

References llvm::fcNegative, and isKnownNever().

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

◆ signBitMustBeOne()

void llvm::KnownFPClass::signBitMustBeOne ( )
inline

Assume the sign bit is one.

Definition at line 403 of file KnownFPClass.h.

References llvm::fcNan, llvm::fcNegative, getKnownFPClasses(), setKnownFPClasses(), and setSignBit().

Referenced by computeKnownFPClassFromCond().

◆ signBitMustBeZero()

void llvm::KnownFPClass::signBitMustBeZero ( )
inline

Assume the sign bit is zero.

Definition at line 397 of file KnownFPClass.h.

References llvm::fcNan, llvm::fcPositive, getKnownFPClasses(), setKnownFPClasses(), and setSignBit().

Referenced by computeKnownFPClassFromCond(), and fabs().

◆ sin()

KnownFPClass KnownFPClass::sin ( const KnownFPClass & Src)
static

Report known values for sin.

Definition at line 922 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNan, isKnownNeverInfinity(), isKnownNeverNaN(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), and cos().

◆ sinh()

KnownFPClass KnownFPClass::sinh ( const KnownFPClass & Src)
static

Report known values for sinh.

Definition at line 954 of file KnownFPClass.cpp.

References llvm::fcNegative, llvm::fcPosInf, llvm::fcPosNormal, llvm::fcPosSubnormal, isKnownNever(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ sqrt()

KnownFPClass KnownFPClass::sqrt ( const KnownFPClass & Src,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Propagate known class for sqrt.

Definition at line 897 of file KnownFPClass.cpp.

References cannotBeOrderedLessThanZero(), llvm::fcNan, llvm::fcNegInf, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosInf, llvm::fcPosSubnormal, isKnownNeverLogicalNegZero(), isKnownNeverNaN(), isKnownNeverPosInfinity(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ square()

KnownFPClass llvm::KnownFPClass::square ( const KnownFPClass & Src,
DenormalMode Mode = DenormalMode::getDynamic() )
inlinestatic

Definition at line 289 of file KnownFPClass.h.

References llvm::fcNegative, fmul(), llvm::DenormalMode::getDynamic(), llvm::Known, KnownFPClass(), and Mode.

Referenced by computeKnownFPClass(), fma_square(), fmuladd_square(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ tan()

KnownFPClass KnownFPClass::tan ( const KnownFPClass & Src)
static

Report known values for tan.

Definition at line 939 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNan, isKnownNeverInfinity(), isKnownNeverNaN(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ tanh()

KnownFPClass KnownFPClass::tanh ( const KnownFPClass & Src)
static

Report known values for tanh.

Definition at line 984 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNegInf, llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosInf, llvm::fcPosNormal, llvm::fcPosSubnormal, isKnownNever(), isKnownNeverNegZero(), llvm::Known, and KnownFPClass().

Referenced by computeKnownFPClass().

◆ toKnownBits()

KnownBits KnownFPClass::toKnownBits ( const fltSemantics & FltSemantics) const

Report known bits for a float with provided semantics.

Definition at line 395 of file KnownFPClass.cpp.

References llvm::BitWidth, llvm::APInt::clearBit(), llvm::fcInf, llvm::fcNan, llvm::fcNone, llvm::fcNormal, llvm::fcQNan, llvm::fcSNan, llvm::fcSubnormal, llvm::fcZero, llvm::APInt::getBitsSet(), llvm::APFloat::getInf(), getKnownFPClasses(), llvm::APInt::getLowBitsSet(), getSignBit(), llvm::APInt::getZero(), isKnownNever(), llvm::Known, llvm_unreachable, llvm::KnownBits::makeConstant(), llvm::fltSemantics::precision, llvm::APFloatBase::S_BFloat, llvm::APFloatBase::S_IEEEdouble, llvm::APFloatBase::S_IEEEhalf, llvm::APFloatBase::S_IEEEquad, llvm::APFloatBase::S_IEEEsingle, llvm::APFloatBase::S_x87DoubleExtended, llvm::APFloatBase::SemanticsToEnum(), and llvm::fltSemantics::sizeInBits.

◆ trunc()

KnownFPClass KnownFPClass::trunc ( const KnownFPClass & Src,
DenormalMode Mode = DenormalMode::getDynamic() )
static

Propagate known class for trunc.

Definition at line 1180 of file KnownFPClass.cpp.

References llvm::fcNegInf, llvm::fcPosInf, isKnownNeverNegInfinity(), isKnownNeverPosInfinity(), llvm::Known, KnownFPClass(), and roundToIntegral().

Referenced by computeKnownFPClass(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ unionWith()

KnownFPClass llvm::KnownFPClass::unionWith ( const KnownFPClass & RHS) const
inline

Definition at line 179 of file KnownFPClass.h.

References getKnownFPClasses(), getSignBit(), KnownFPClass(), and RHS.

Referenced by llvm::adjustKnownFPClassForSelectArm().

Member Data Documentation

◆ KnownFPClassesValue

FPClassTest llvm::KnownFPClass::KnownFPClassesValue = fcAllFlags

Definition at line 28 of file KnownFPClass.h.

Referenced by getKnownFPClasses(), KnownFPClass(), and setKnownFPClasses().

◆ OrderedGreaterThanZeroMask

FPClassTest llvm::KnownFPClass::OrderedGreaterThanZeroMask
staticconstexpr
Initial value:
=
fcPosSubnormal | fcPosNormal | fcPosInf

Definition at line 115 of file KnownFPClass.h.

Referenced by cannotBeOrderedGreaterThanZero(), fadd_impl(), ldexp(), and simplifyDemandedFPClassFnegFabs().

◆ OrderedLessThanZeroMask

FPClassTest llvm::KnownFPClass::OrderedLessThanZeroMask
staticconstexpr
Initial value:
=
fcNegSubnormal | fcNegNormal | fcNegInf

Definition at line 113 of file KnownFPClass.h.

Referenced by llvm::cannotBeOrderedLessThanZero(), cannotBeOrderedLessThanZero(), computeKnownFPClass(), computeKnownFPClassForFPTrunc(), fadd_impl(), fptrunc(), ldexp(), simplifyDemandedFPClassFabs(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), and simplifyFCmpInst().

◆ SignBitValue

std::optional<bool> llvm::KnownFPClass::SignBitValue

Definition at line 29 of file KnownFPClass.h.

Referenced by getSignBit(), and setSignBit().

The documentation for this struct was generated from the following files:
Generated on for LLVM by doxygen 1.14.0