#include "llvm/Support/KnownFPClass.h"

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

Public Member Functions
	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 ()
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	propagateNaN (const KnownFPClass &Src, bool PreserveSign=false)
LLVM_ABI void	propagateDenormal (const KnownFPClass &Src, DenormalMode Mode)
	Propagate knowledge from a source value that could be a denormal or zero.
LLVM_ABI void	propagateCanonicalizingSrc (const KnownFPClass &Src, DenormalMode Mode)
	Report known classes if `Src` is evaluated through a potentially canonicalizing operation.
void	resetAll ()

Static Public Member Functions
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_self (const KnownFPClass &Src, DenormalMode Mode=DenormalMode::getDynamic())
	Report known values for frem.
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	fma_square (const KnownFPClass &Squared, const KnownFPClass &Addend, DenormalMode Mode=DenormalMode::getDynamic())
	Report known values for fma squared, squared, addend.
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)
	Report known values for atan2.
static KnownFPClass	copysign (const KnownFPClass &KnownMag, const KnownFPClass &KnownSign)
static LLVM_ABI KnownFPClass	log (const KnownFPClass &Src, DenormalMode Mode=DenormalMode::getDynamic())
	Propagate known class for log/log2/log10.
static LLVM_ABI KnownFPClass	sqrt (const KnownFPClass &Src, DenormalMode Mode=DenormalMode::getDynamic())
	Propagate known class for sqrt.
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 IsTrunc, bool IsMultiUnitFPType)
	Propagate known class for rounding intrinsics (trunc, floor, ceil, rint, nearbyint, round, roundeven).
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 KnownBits &N, const fltSemantics &Flt, DenormalMode Mode=DenormalMode::getDynamic())
	Propagate known class for ldexp.
static LLVM_ABI KnownFPClass	powi (const KnownFPClass &Src, const KnownBits &N)
	Propagate known class for powi.

Public Attributes
FPClassTest	KnownFPClasses = fcAllFlags
	Floating-point classes the value could be one of.
std::optional< bool >	SignBit
	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.

Static Public Attributes
static constexpr FPClassTest	OrderedLessThanZeroMask
static constexpr FPClassTest	OrderedGreaterThanZeroMask

Detailed Description

Definition at line 26 of file KnownFPClass.h.

Member Enumeration Documentation

◆ MinMaxKind

enum class llvm::KnownFPClass::MinMaxKind

strong

Enumerator
minimum
maximum
minimumnum
maximumnum
minnum
maxnum

Definition at line 220 of file KnownFPClass.h.

Constructor & Destructor Documentation

◆ KnownFPClass() [1/2]

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

inline

Definition at line 34 of file KnownFPClass.h.

References llvm::fcAllFlags.

Referenced by acos(), asin(), atan(), atan2(), bitcast(), canonicalize(), copysign(), copysign(), cos(), cosh(), exp(), fabs(), fadd(), fadd_self(), fdiv(), fdiv_self(), fma(), fma_square(), fmul(), fmul(), fneg(), fpext(), fptrunc(), frem_self(), frexp_mant(), fsub(), intersectWith(), ldexp(), log(), minMaxLike(), operator==(), operator|=(), powi(), propagateCanonicalizingSrc(), propagateDenormal(), propagateNaN(), resetAll(), roundToIntegral(), sin(), sinh(), sqrt(), square(), tan(), tanh(), and unionWith().

◆ KnownFPClass() [2/2]

KnownFPClass::KnownFPClass ( const APFloat & C )

Definition at line 21 of file KnownFPClass.cpp.

References llvm::CallingConv::C, KnownFPClasses, and SignBit.

Member Function Documentation

◆ acos()

KnownFPClass KnownFPClass::acos ( const KnownFPClass & Src )

static

Report known values for acos.

Definition at line 684 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNegative, KnownFPClass(), knownNot(), and propagateNaN().

Referenced by computeKnownFPClass().

◆ asin()

KnownFPClass KnownFPClass::asin ( const KnownFPClass & Src )

static

Report known values for asin.

Definition at line 667 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNegative, isKnownNever(), KnownFPClass(), knownNot(), and propagateNaN().

Referenced by computeKnownFPClass().

◆ atan()

KnownFPClass KnownFPClass::atan ( const KnownFPClass & Src )

static

Report known values for atan.

Definition at line 698 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNegative, isKnownNever(), KnownFPClass(), knownNot(), and propagateNaN().

Referenced by computeKnownFPClass().

◆ atan2()

KnownFPClass KnownFPClass::atan2	(	const KnownFPClass &	LHS,
		const KnownFPClass &	RHS )

static

Report known values for atan2.

Definition at line 713 of file KnownFPClass.cpp.

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

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 237 of file KnownFPClass.cpp.

References assert(), llvm::KnownBits::eq(), llvm::fcInf, llvm::fcNan, llvm::fcZero, llvm::APFloat::getInf(), llvm::APFloat::getZero(), llvm::APFloatBase::isIEEELikeFP(), llvm::APFloat::isNaN(), KnownFPClass(), KnownFPClasses, knownNot(), llvm::KnownBits::makeConstant(), signBitMustBeOne(), signBitMustBeZero(), 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 148 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 126 of file KnownFPClass.h.

References isKnownNever(), and OrderedGreaterThanZeroMask.

Referenced by computeKnownFPClass(), exp(), fadd_impl(), ldexp(), and minMaxLike().

◆ 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 137 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 115 of file KnownFPClass.h.

References isKnownNever(), and OrderedLessThanZeroMask.

Referenced by llvm::cannotBeOrderedLessThanZero(), computeKnownFPClass(), exp(), fadd_impl(), fptrunc(), ldexp(), log(), minMaxLike(), simplifyFCmpInst(), simplifyUnaryIntrinsic(), and sqrt().

◆ canonicalize()

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

static

Apply the canonicalize intrinsic to this value.

This is essentially a stronger form of propagateCanonicalizingSrc.

Definition at line 187 of file KnownFPClass.cpp.

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

◆ copysign() [1/2]

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

inlinestatic

Definition at line 375 of file KnownFPClass.h.

References copysign(), and KnownFPClass().

◆ copysign() [2/2]

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

inline

Definition at line 353 of file KnownFPClass.h.

References llvm::fcInf, llvm::fcNan, llvm::fcNegative, llvm::fcNormal, llvm::fcPositive, llvm::fcSubnormal, llvm::fcZero, isKnownNever(), KnownFPClass(), KnownFPClasses, and SignBit.

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

◆ cos()

KnownFPClass KnownFPClass::cos ( const KnownFPClass & Src )

static

Report known values for cos.

Definition at line 612 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 641 of file KnownFPClass.cpp.

References llvm::fcNegative, KnownFPClass(), knownNot(), and propagateNaN().

Referenced by computeKnownFPClass().

◆ exp()

KnownFPClass KnownFPClass::exp ( const KnownFPClass & Src )

static

Report known values for exp, exp2 and exp10.

Definition at line 532 of file KnownFPClass.cpp.

References cannotBeOrderedGreaterThanZero(), cannotBeOrderedLessThanZero(), llvm::fcNegative, llvm::fcPosInf, llvm::fcPosSubnormal, llvm::fcPosZero, KnownFPClass(), knownNot(), and propagateNaN().

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

◆ fabs() [1/2]

void llvm::KnownFPClass::fabs ( )

inline

Definition at line 197 of file KnownFPClass.h.

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

Referenced by computeKnownFPClass(), llvm::SelectionDAG::computeKnownFPClass(), fabs(), simplifyDemandedFPClassFabs(), and simplifyDemandedFPClassFnegFabs().

◆ fabs() [2/2]

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

inlinestatic

Definition at line 213 of file KnownFPClass.h.

References fabs(), 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 325 of file KnownFPClass.cpp.

References fadd_impl(), llvm::fcNegZero, llvm::DenormalMode::IEEE, isKnownNeverLogicalNegZero(), KnownFPClass(), knownNot(), and llvm::DenormalMode::PositiveZero.

Referenced by computeKnownFPClass(), fadd_self(), fsub(), 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 341 of file KnownFPClass.cpp.

References fadd(), llvm::fcPosZero, llvm::DenormalMode::IEEE, isKnownNeverLogicalPosZero(), isKnownNeverPosSubnormal(), isKnownNeverSubnormal(), KnownFPClass(), knownNot(), llvm::DenormalMode::PositiveZero, and llvm::DenormalMode::PreserveSign.

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 438 of file KnownFPClass.cpp.

References llvm::fcFinite, llvm::fcInf, llvm::fcNan, llvm::fcNegative, llvm::fcNormal, llvm::fcPositive, llvm::fcSubnormal, llvm::fcZero, isKnownAlways(), isKnownNever(), isKnownNeverInfinity(), isKnownNeverLogicalZero(), isKnownNeverNaN(), KnownFPClass(), and knownNot().

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 475 of file KnownFPClass.cpp.

References llvm::fcNan, llvm::fcPosNormal, llvm::fcSNan, isKnownNever(), isKnownNeverInfOrNaN(), isKnownNeverLogicalZero(), KnownFPClass(), and knownNot().

Referenced by computeKnownFPClass().

◆ 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 500 of file KnownFPClass.cpp.

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

Referenced by computeKnownFPClass(), 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 514 of file KnownFPClass.cpp.

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

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

◆ fmul() [1/2]

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

static

Definition at line 410 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(), KnownFPClass(), knownNot(), 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 363 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNan, llvm::fcNegative, llvm::fcNormal, llvm::fcPositive, llvm::fcSubnormal, llvm::fcZero, isKnownAlways(), isKnownNever(), isKnownNeverInfinity(), isKnownNeverLogicalZero(), isKnownNeverNaN(), KnownFPClass(), and knownNot().

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

◆ fneg() [1/2]

void llvm::KnownFPClass::fneg ( )

inline

Definition at line 185 of file KnownFPClass.h.

References llvm::fneg(), KnownFPClasses, and SignBit.

Referenced by computeKnownFPClass(), llvm::SelectionDAG::computeKnownFPClass(), fneg(), fsub(), simplifyDemandedFPClassFnegFabs(), and llvm::InstCombinerImpl::SimplifyDemandedUseFPClass().

◆ fneg() [2/2]

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

inlinestatic

Definition at line 191 of file KnownFPClass.h.

References fneg(), and KnownFPClass().

◆ fpext()

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

static

Propagate known class for fpext.

Definition at line 727 of file KnownFPClass.cpp.

References llvm::fcNegNormal, llvm::fcNegSubnormal, llvm::fcPosNormal, llvm::fcPosSubnormal, llvm::fcSubnormal, isKnownNeverNaN(), llvm::APFloatBase::isRepresentableAsNormalIn(), KnownFPClass(), KnownFPClasses, knownNot(), and SignBit.

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

◆ fptrunc()

KnownFPClass KnownFPClass::fptrunc ( const KnownFPClass & KnownSrc )

static

Propagate known class for fptrunc.

Definition at line 749 of file KnownFPClass.cpp.

References cannotBeOrderedLessThanZero(), KnownFPClass(), knownNot(), OrderedLessThanZeroMask, and propagateNaN().

Referenced by computeKnownFPClassForFPTrunc(), and simplifyDemandedUseFPClassFPTrunc().

◆ frem_self()

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

static

Report known values for frem.

Definition at line 487 of file KnownFPClass.cpp.

References llvm::fcNan, llvm::fcSNan, llvm::fcZero, isKnownNever(), isKnownNeverInfOrNaN(), isKnownNeverLogicalZero(), KnownFPClass(), and knownNot().

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 791 of file KnownFPClass.cpp.

References llvm::fcNegative, llvm::fcNegInf, llvm::fcNegZero, llvm::fcPosInf, llvm::fcPositive, llvm::fcPosZero, llvm::fcSubnormal, isKnownNever(), isKnownNeverLogicalNegZero(), isKnownNeverLogicalPosZero(), KnownFPClass(), knownNot(), and propagateNaN().

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 357 of file KnownFPClass.cpp.

References fadd(), fneg(), and KnownFPClass().

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

◆ intersectWith()

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

inline

Definition at line 152 of file KnownFPClass.h.

References KnownFPClass(), KnownFPClasses, RHS, and SignBit.

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

◆ isKnownAlways()

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

inline

Definition at line 47 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 55 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 43 of file KnownFPClass.h.

References llvm::fcNone, and KnownFPClasses.

Referenced by asin(), atan(), cannotBeOrderedGreaterEqZero(), cannotBeOrderedGreaterThanZero(), cannotBeOrderedLessEqZero(), cannotBeOrderedLessThanZero(), canonicalize(), computeKnownFPClass(), copysign(), fadd_impl(), fdiv(), fdiv_self(), fma_square(), fmul(), fmul(), foldFPtoI(), frem_self(), frexp_mant(), isKnownAlways(), isKnownNeverInfinity(), isKnownNeverInfOrNaN(), isKnownNeverNaN(), llvm::SelectionDAG::isKnownNeverNaN(), isKnownNeverNegInfinity(), isKnownNeverNegSubnormal(), isKnownNeverNegZero(), isKnownNeverPosInfinity(), isKnownNeverPosSubnormal(), isKnownNeverPosZero(), isKnownNeverSubnormal(), isKnownNeverZero(), knownNot(), ldexp(), powi(), roundToIntegral(), signBitIsZeroOrNaN(), simplifyDemandedFPClassFabs(), simplifyDemandedFPClassFnegFabs(), simplifyDemandedFPClassMinMax(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), simplifyFMAFMul(), llvm::InstCombinerImpl::SimplifyMultipleUseDemandedFPClass(), simplifyX86FPMaxMin(), sinh(), sqrt(), and tanh().

◆ isKnownNeverInfinity()

bool llvm::KnownFPClass::isKnownNeverInfinity ( ) const

inline

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

Definition at line 58 of file KnownFPClass.h.

References llvm::fcInf, and isKnownNever().

Referenced by computeKnownFPClass(), fdiv(), fmul(), inferFastMathValueFlags(), llvm::isKnownNeverInfinity(), llvm::isKnownNeverInfOrNaN(), 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 61 of file KnownFPClass.h.

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

Referenced by computeKnownFPClass(), fdiv_self(), 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 40 of file KnownFPClass.cpp.

References inputDenormalIsIEEEOrPosZero(), isKnownNeverNegSubnormal(), and isKnownNeverNegZero().

Referenced by cannotBeOrderedGreaterEqZero(), computeKnownFPClass(), fadd(), frexp_mant(), ldexp(), 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 45 of file KnownFPClass.cpp.

References llvm::DenormalMode::IEEE, isKnownNeverPosSubnormal(), isKnownNeverPosZero(), isKnownNeverSubnormal(), llvm_unreachable, llvm::DenormalMode::PositiveZero, and llvm::DenormalMode::PreserveSign.

Referenced by cannotBeOrderedLessEqZero(), computeKnownFPClass(), fadd_self(), frexp_mant(), ldexp(), 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 35 of file KnownFPClass.cpp.

References inputDenormalIsIEEE(), isKnownNeverSubnormal(), and isKnownNeverZero().

Referenced by computeKnownFPClass(), fdiv(), fdiv_self(), fmul(), frem_self(), llvm::SelectionDAG::isKnownNeverLogicalZero(), 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 52 of file KnownFPClass.h.

References llvm::fcNan, and isKnownNever().

Referenced by atan2(), canonicalize(), computeKnownFPClass(), fadd_impl(), fdiv(), fmul(), llvm::InstCombinerImpl::foldSelectIntoOp(), fpext(), inferFastMathValueFlags(), llvm::isKnownNeverInfOrNaN(), llvm::isKnownNeverNaN(), log(), minMaxLike(), 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 67 of file KnownFPClass.h.

References llvm::fcNegInf, and isKnownNever().

Referenced by ldexp(), and roundToIntegral().

◆ isKnownNeverNegSubnormal()

bool llvm::KnownFPClass::isKnownNeverNegSubnormal ( ) const

inline

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

Definition at line 76 of file KnownFPClass.h.

References llvm::fcNegSubnormal, and isKnownNever().

Referenced by isKnownNeverLogicalNegZero(), and 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 87 of file KnownFPClass.h.

References llvm::fcNegZero, and isKnownNever().

Referenced by llvm::cannotBeNegativeZero(), isKnownNeverLogicalNegZero(), and minMaxLike().

◆ isKnownNeverPosInfinity()

bool llvm::KnownFPClass::isKnownNeverPosInfinity ( ) const

inline

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

Definition at line 64 of file KnownFPClass.h.

References llvm::fcPosInf, and isKnownNever().

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

◆ isKnownNeverPosSubnormal()

bool llvm::KnownFPClass::isKnownNeverPosSubnormal ( ) const

inline

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

Definition at line 73 of file KnownFPClass.h.

References llvm::fcPosSubnormal, and isKnownNever().

Referenced by fadd_self(), isKnownNeverLogicalPosZero(), and 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 83 of file KnownFPClass.h.

References llvm::fcPosZero, and isKnownNever().

Referenced by isKnownNeverLogicalPosZero(), and minMaxLike().

◆ isKnownNeverSubnormal()

bool llvm::KnownFPClass::isKnownNeverSubnormal ( ) const

inline

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

Definition at line 70 of file KnownFPClass.h.

References llvm::fcSubnormal, and isKnownNever().

Referenced by llvm::computeConstantRange(), fadd_self(), isKnownNeverLogicalPosZero(), isKnownNeverLogicalZero(), minMaxLike(), 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 80 of file KnownFPClass.h.

References llvm::fcZero, and isKnownNever().

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

◆ isUnknown()

bool llvm::KnownFPClass::isUnknown ( ) const

inline

Definition at line 49 of file KnownFPClass.h.

References llvm::fcAllFlags, KnownFPClasses, and SignBit.

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

◆ knownNot()

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

inline

Definition at line 175 of file KnownFPClass.h.

References llvm::fcNan, llvm::fcNegative, llvm::fcPositive, isKnownNever(), KnownFPClasses, and SignBit.

Referenced by acos(), asin(), atan(), atan2(), bitcast(), canonicalize(), computeKnownFPClass(), computeKnownFPClassFromCond(), cosh(), exp(), fadd(), fadd_impl(), fadd_self(), fdiv(), fdiv_self(), fma_square(), fmul(), fmul(), fpext(), fptrunc(), frem_self(), frexp_mant(), ldexp(), log(), minMaxLike(), powi(), propagateNaN(), roundToIntegral(), llvm::InstCombinerImpl::SimplifyDemandedFPClass(), simplifyDemandedFPClassFabs(), simplifyDemandedFPClassFnegFabs(), simplifyDemandedFPClassMinMax(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), simplifyDemandedUseFPClassFPTrunc(), llvm::InstCombinerImpl::SimplifyMultipleUseDemandedFPClass(), sin(), sinh(), sqrt(), square(), tan(), and tanh().

◆ ldexp()

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

static

Propagate known class for ldexp.

Definition at line 818 of file KnownFPClass.cpp.

References cannotBeOrderedGreaterThanZero(), cannotBeOrderedLessThanZero(), llvm::fcNegative, llvm::fcNegInf, llvm::fcNegSubnormal, llvm::fcNegZero, llvm::fcPosInf, llvm::fcPositive, llvm::fcPosSubnormal, llvm::fcPosZero, llvm::fcSubnormal, llvm::KnownBits::getConstant(), llvm::KnownBits::getSignedMinValue(), llvm::KnownBits::isConstant(), isKnownNever(), isKnownNeverLogicalNegZero(), isKnownNeverLogicalPosZero(), isKnownNeverNegInfinity(), isKnownNeverNegSubnormal(), isKnownNeverPosInfinity(), isKnownNeverPosSubnormal(), llvm::KnownBits::isNegative(), llvm::KnownBits::isNonNegative(), llvm::APInt::isZero(), KnownFPClass(), knownNot(), OrderedGreaterThanZeroMask, OrderedLessThanZeroMask, propagateCanonicalizingSrc(), propagateNaN(), llvm::APFloatBase::semanticsPrecision(), and llvm::APInt::sge().

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

◆ log()

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

static

Propagate known class for log/log2/log10.

Definition at line 559 of file KnownFPClass.cpp.

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

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 95 of file KnownFPClass.cpp.

References cannotBeOrderedGreaterThanZero(), cannotBeOrderedLessThanZero(), llvm::fcNan, llvm::fcNone, llvm::fcZero, llvm::DenormalMode::getIEEE(), isKnownNeverNaN(), isKnownNeverNegZero(), isKnownNeverPosZero(), isKnownNeverSubnormal(), KnownFPClass(), KnownFPClasses, knownNot(), llvm_unreachable, maximum, maximumnum, maxnum, minimum, minimumnum, minnum, OrderedGreaterThanZeroMask, OrderedLessThanZeroMask, SignBit, signBitMustBeOne(), and signBitMustBeZero().

Referenced by computeKnownFPClass(), and simplifyDemandedFPClassMinMax().

◆ operator==()

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

inline

Definition at line 38 of file KnownFPClass.h.

References KnownFPClass(), KnownFPClasses, llvm::Other, and SignBit.

◆ operator|=()

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

inline

Definition at line 167 of file KnownFPClass.h.

References KnownFPClass(), KnownFPClasses, RHS, and SignBit.

◆ powi()

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

static

Propagate known class for powi.

Definition at line 866 of file KnownFPClass.cpp.

References llvm::fcNan, llvm::fcNegative, llvm::fcPosNormal, llvm::fcSNan, llvm::KnownBits::isEven(), isKnownNever(), llvm::KnownBits::isZero(), KnownFPClass(), knownNot(), and propagateNaN().

Referenced by computeKnownFPClass().

◆ propagateCanonicalizingSrc()

void KnownFPClass::propagateCanonicalizingSrc	(	const KnownFPClass &	Src,
		DenormalMode	Mode )

Report known classes if Src is evaluated through a potentially canonicalizing operation.

We can assume signaling nans will not be introduced, but cannot assume a denormal will be flushed under FTZ/DAZ.

This assumes a copy-like operation and will replace any currently known information.

Definition at line 553 of file KnownFPClass.cpp.

References KnownFPClass(), propagateDenormal(), and propagateNaN().

Referenced by ldexp().

◆ propagateDenormal()

void KnownFPClass::propagateDenormal	(	const KnownFPClass &	Src,
		DenormalMode	Mode )

Propagate knowledge from a source value that could be a denormal or zero.

We have to be conservative since output flushing is not guaranteed, so known-never-zero may not hold.

This assumes a copy-like operation and will replace any currently known information.

Definition at line 68 of file KnownFPClass.cpp.

References llvm::DenormalMode::Dynamic, llvm::fcNegZero, llvm::fcPosZero, llvm::DenormalMode::getIEEE(), llvm::DenormalMode::getPositiveZero(), KnownFPClass(), KnownFPClasses, and llvm::DenormalMode::PositiveZero.

Referenced by propagateCanonicalizingSrc().

◆ propagateNaN()

void llvm::KnownFPClass::propagateNaN	(	const KnownFPClass &	Src,
		bool	PreserveSign = false )

inline

Definition at line 385 of file KnownFPClass.h.

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

Referenced by acos(), asin(), atan(), computeKnownFPClass(), cosh(), exp(), fptrunc(), frexp_mant(), ldexp(), powi(), propagateCanonicalizingSrc(), roundToIntegral(), sinh(), square(), and tanh().

◆ resetAll()

void llvm::KnownFPClass::resetAll ( )

inline

Definition at line 447 of file KnownFPClass.h.

References KnownFPClass().

Referenced by computeKnownFPClass(), and llvm::TargetLowering::computeKnownFPClassForTargetInstr().

◆ roundToIntegral()

KnownFPClass KnownFPClass::roundToIntegral	(	const KnownFPClass &	Src,
		bool	IsTrunc,
		bool	IsMultiUnitFPType )

static

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

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

Definition at line 763 of file KnownFPClass.cpp.

References llvm::fcNegFinite, llvm::fcNegInf, llvm::fcPosFinite, llvm::fcPosInf, llvm::fcSubnormal, isKnownNever(), isKnownNeverNegInfinity(), isKnownNeverPosInfinity(), KnownFPClass(), knownNot(), and propagateNaN().

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

◆ signBitIsZeroOrNaN()

bool llvm::KnownFPClass::signBitIsZeroOrNaN ( ) const

inline

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

Definition at line 339 of file KnownFPClass.h.

References llvm::fcNegative, and isKnownNever().

◆ signBitMustBeOne()

void llvm::KnownFPClass::signBitMustBeOne ( )

inline

Assume the sign bit is one.

Definition at line 348 of file KnownFPClass.h.

References llvm::fcNan, llvm::fcNegative, KnownFPClasses, and SignBit.

Referenced by bitcast(), computeKnownFPClass(), computeKnownFPClassFromCond(), and minMaxLike().

◆ signBitMustBeZero()

void llvm::KnownFPClass::signBitMustBeZero ( )

inline

Assume the sign bit is zero.

Definition at line 342 of file KnownFPClass.h.

References llvm::fcNan, llvm::fcPositive, KnownFPClasses, and SignBit.

Referenced by bitcast(), computeKnownFPClass(), computeKnownFPClassFromCond(), fabs(), and minMaxLike().

◆ sin()

KnownFPClass KnownFPClass::sin ( const KnownFPClass & Src )

static

Report known values for sin.

Definition at line 601 of file KnownFPClass.cpp.

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

Referenced by computeKnownFPClass(), and cos().

◆ sinh()

KnownFPClass KnownFPClass::sinh ( const KnownFPClass & Src )

static

Report known values for sinh.

Definition at line 629 of file KnownFPClass.cpp.

References llvm::fcNegative, isKnownNever(), KnownFPClass(), knownNot(), and propagateNaN().

Referenced by computeKnownFPClass().

◆ sqrt()

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

static

Propagate known class for sqrt.

Definition at line 576 of file KnownFPClass.cpp.

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

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

◆ square()

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

inlinestatic

Definition at line 264 of file KnownFPClass.h.

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

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

◆ tan()

KnownFPClass KnownFPClass::tan ( const KnownFPClass & Src )

static

Report known values for tan.

Definition at line 616 of file KnownFPClass.cpp.

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

Referenced by computeKnownFPClass().

◆ tanh()

KnownFPClass KnownFPClass::tanh ( const KnownFPClass & Src )

static

Report known values for tanh.

Definition at line 652 of file KnownFPClass.cpp.

References llvm::fcInf, llvm::fcNegative, isKnownNever(), KnownFPClass(), knownNot(), and propagateNaN().

Referenced by computeKnownFPClass().

◆ unionWith()

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

inline

Definition at line 157 of file KnownFPClass.h.

References KnownFPClass(), KnownFPClasses, RHS, and SignBit.

Referenced by llvm::adjustKnownFPClassForSelectArm().

Member Data Documentation

◆ KnownFPClasses

FPClassTest llvm::KnownFPClass::KnownFPClasses = fcAllFlags

Floating-point classes the value could be one of.

Definition at line 28 of file KnownFPClass.h.

Referenced by bitcast(), canonicalize(), computeKnownFPClass(), llvm::SelectionDAG::computeKnownFPClass(), copysign(), fabs(), fneg(), fpext(), intersectWith(), isKnownNever(), isUnknown(), KnownFPClass(), knownNot(), minMaxLike(), operator==(), operator|=(), propagateDenormal(), signBitMustBeOne(), signBitMustBeZero(), llvm::InstCombinerImpl::SimplifyDemandedFPClass(), simplifyDemandedFPClassMinMax(), simplifyDemandedFPClassResult(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), llvm::InstCombinerImpl::SimplifyMultipleUseDemandedFPClass(), and unionWith().

◆ OrderedGreaterThanZeroMask

FPClassTest llvm::KnownFPClass::OrderedGreaterThanZeroMask

staticconstexpr

Initial value:

=

fcPosSubnormal | fcPosNormal | fcPosInf

llvm::fcPosNormal

@ fcPosNormal

Definition FloatingPointMode.h:349

llvm::fcPosSubnormal

@ fcPosSubnormal

Definition FloatingPointMode.h:348

llvm::fcPosInf

@ fcPosInf

Definition FloatingPointMode.h:350

Definition at line 104 of file KnownFPClass.h.

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

◆ OrderedLessThanZeroMask

FPClassTest llvm::KnownFPClass::OrderedLessThanZeroMask

staticconstexpr

Initial value:

=

fcNegSubnormal | fcNegNormal | fcNegInf

llvm::fcNegSubnormal

@ fcNegSubnormal

Definition FloatingPointMode.h:345

llvm::fcNegInf

@ fcNegInf

Definition FloatingPointMode.h:343

llvm::fcNegNormal

@ fcNegNormal

Definition FloatingPointMode.h:344

Definition at line 102 of file KnownFPClass.h.

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

◆ SignBit

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

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 32 of file KnownFPClass.h.

Referenced by computeKnownFPClass(), llvm::SelectionDAG::computeKnownFPClass(), llvm::computeKnownFPSignBit(), copysign(), fneg(), fpext(), intersectWith(), isUnknown(), KnownFPClass(), knownNot(), minMaxLike(), operator==(), operator|=(), propagateNaN(), signBitMustBeOne(), signBitMustBeZero(), simplifyDemandedFPClassCopysignMag(), simplifyDemandedFPClassFabs(), simplifyDemandedFPClassFnegFabs(), llvm::InstCombinerImpl::SimplifyDemandedUseFPClass(), simplifyFMAFMul(), llvm::InstCombinerImpl::SimplifyMultipleUseDemandedFPClass(), simplifyUnaryIntrinsic(), and unionWith().

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

include/llvm/Support/KnownFPClass.h
lib/Support/KnownFPClass.cpp

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Detailed Description

Member Enumeration Documentation

◆ MinMaxKind

Constructor & Destructor Documentation

◆ KnownFPClass() [1/2]

◆ KnownFPClass() [2/2]

Member Function Documentation

◆ acos()

◆ asin()

◆ atan()

◆ atan2()

◆ bitcast()

◆ cannotBeOrderedGreaterEqZero()

◆ cannotBeOrderedGreaterThanZero()

◆ cannotBeOrderedLessEqZero()

◆ cannotBeOrderedLessThanZero()

◆ canonicalize()

◆ copysign() [1/2]

◆ copysign() [2/2]

◆ cos()

◆ cosh()

◆ exp()

◆ fabs() [1/2]

◆ fabs() [2/2]

◆ fadd()

◆ fadd_self()

◆ fdiv()

◆ fdiv_self()

◆ fma()

◆ fma_square()

◆ fmul() [1/2]

◆ fmul() [2/2]

◆ fneg() [1/2]

◆ fneg() [2/2]

◆ fpext()

◆ fptrunc()

◆ frem_self()

◆ frexp_mant()

◆ fsub()

◆ intersectWith()

◆ isKnownAlways()

◆ isKnownAlwaysNaN()

◆ isKnownNever()

◆ isKnownNeverInfinity()

◆ isKnownNeverInfOrNaN()

◆ isKnownNeverLogicalNegZero()

◆ isKnownNeverLogicalPosZero()

◆ isKnownNeverLogicalZero()

◆ isKnownNeverNaN()

◆ isKnownNeverNegInfinity()

◆ isKnownNeverNegSubnormal()

◆ isKnownNeverNegZero()

◆ isKnownNeverPosInfinity()

◆ isKnownNeverPosSubnormal()

◆ isKnownNeverPosZero()

◆ isKnownNeverSubnormal()

◆ isKnownNeverZero()

◆ isUnknown()

◆ knownNot()

◆ ldexp()

◆ log()

◆ minMaxLike()

◆ operator==()

◆ operator|=()

◆ powi()

◆ propagateCanonicalizingSrc()

◆ propagateDenormal()

◆ propagateNaN()

◆ resetAll()

◆ roundToIntegral()

◆ signBitIsZeroOrNaN()

◆ signBitMustBeOne()

◆ signBitMustBeZero()

◆ sin()

◆ sinh()