llvm::FastMathFlags Class Reference

Convenience struct for specifying and reasoning about fast-math flags. More...

#include "llvm/IR/Operator.h"

Public Types
enum	{   AllowReassoc = (1 << 0), NoNaNs = (1 << 1), NoInfs = (1 << 2), NoSignedZeros = (1 << 3),   AllowReciprocal = (1 << 4), AllowContract = (1 << 5), ApproxFunc = (1 << 6) }

Public Member Functions
	FastMathFlags ()=default
bool	any () const
bool	none () const
bool	all () const
void	clear ()
void	set ()
bool	allowReassoc () const
	Flag queries. More...
bool	noNaNs () const
bool	noInfs () const
bool	noSignedZeros () const
bool	allowReciprocal () const
bool	allowContract () const
bool	approxFunc () const
bool	isFast () const
	'Fast' means all bits are set. More...
void	setAllowReassoc (bool B=true)
	Flag setters. More...
void	setNoNaNs (bool B=true)
void	setNoInfs (bool B=true)
void	setNoSignedZeros (bool B=true)
void	setAllowReciprocal (bool B=true)
void	setAllowContract (bool B=true)
void	setApproxFunc (bool B=true)
void	setFast (bool B=true)
void	operator&= (const FastMathFlags &OtherFlags)
void	operator|= (const FastMathFlags &OtherFlags)
bool	operator!= (const FastMathFlags &OtherFlags) const

Static Public Member Functions
static FastMathFlags	getFast ()

Friends
class	FPMathOperator

Detailed Description

Convenience struct for specifying and reasoning about fast-math flags.

Definition at line 161 of file Operator.h.

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
AllowReassoc
NoNaNs
NoInfs
NoSignedZeros
AllowReciprocal
AllowContract
ApproxFunc

Definition at line 180 of file Operator.h.

Constructor & Destructor Documentation

FastMathFlags()

llvm::FastMathFlags::FastMathFlags ( )

default

Member Function Documentation

all()

bool llvm::FastMathFlags::all ( ) const

inline

Definition at line 200 of file Operator.h.

Referenced by isFast().

allowContract()

bool llvm::FastMathFlags::allowContract ( ) const

inline

Definition at line 211 of file Operator.h.

References AllowContract.

Referenced by llvm::MachineInstr::copyFlagsFromInstruction(), and instCombineSVEVectorFMLA().

allowReassoc()

bool llvm::FastMathFlags::allowReassoc ( ) const

inline

Flag queries.

Definition at line 206 of file Operator.h.

References AllowReassoc.

Referenced by llvm::MachineInstr::copyFlagsFromInstruction(), getISDForVPIntrinsic(), instCombineSVEVectorFMLA(), SimplifyFAddInst(), SimplifyFDivInst(), SimplifyFMAFMul(), and SimplifyFSubInst().

allowReciprocal()

bool llvm::FastMathFlags::allowReciprocal ( ) const

inline

Definition at line 210 of file Operator.h.

References AllowReciprocal.

Referenced by llvm::MachineInstr::copyFlagsFromInstruction().

any()

bool llvm::FastMathFlags::any ( ) const

inline

Definition at line 198 of file Operator.h.

approxFunc()

bool llvm::FastMathFlags::approxFunc ( ) const

inline

Definition at line 212 of file Operator.h.

References ApproxFunc.

Referenced by llvm::MachineInstr::copyFlagsFromInstruction().

clear()

void llvm::FastMathFlags::clear ( )

inline

Definition at line 202 of file Operator.h.

Referenced by llvm::IRBuilderBase::clearFastMathFlags(), and setFast().

getFast()

static FastMathFlags llvm::FastMathFlags::getFast ( )

inlinestatic

Definition at line 192 of file Operator.h.

References setFast().

isFast()

bool llvm::FastMathFlags::isFast ( ) const

inline

'Fast' means all bits are set.

Definition at line 214 of file Operator.h.

References all().

noInfs()

bool llvm::FastMathFlags::noInfs ( ) const

inline

Definition at line 208 of file Operator.h.

References NoInfs.

Referenced by llvm::MachineInstr::copyFlagsFromInstruction(), foldFNegIntoConstant(), and simplifyFPOp().

noNaNs()

bool llvm::FastMathFlags::noNaNs ( ) const

inline

Definition at line 207 of file Operator.h.

References NoNaNs.

Referenced by canIgnoreSNaN(), llvm::MachineInstr::copyFlagsFromInstruction(), isKnownNonNaN(), llvm::RecurrenceDescriptor::isRecurrenceInstr(), SimplifyFAddInst(), SimplifyFCmpInst(), SimplifyFDivInst(), SimplifyFMAFMul(), simplifyFPOp(), SimplifyFRemInst(), and SimplifyFSubInst().

none()

bool llvm::FastMathFlags::none ( ) const

inline

Definition at line 199 of file Operator.h.

noSignedZeros()

bool llvm::FastMathFlags::noSignedZeros ( ) const

inline

Definition at line 209 of file Operator.h.

References NoSignedZeros.

Referenced by llvm::MachineInstr::copyFlagsFromInstruction(), foldFNegIntoConstant(), llvm::RecurrenceDescriptor::getRecurrenceIdentity(), llvm::RecurrenceDescriptor::isRecurrenceInstr(), matchSelectPattern(), SimplifyFAddInst(), SimplifyFDivInst(), SimplifyFMAFMul(), SimplifyFSubInst(), and llvm::InstCombinerImpl::visitCallInst().

operator!=()

bool llvm::FastMathFlags::operator!= ( const FastMathFlags &  OtherFlags ) const

inline

Definition at line 246 of file Operator.h.

operator&=()

void llvm::FastMathFlags::operator&= ( const FastMathFlags &  OtherFlags )

inline

Definition at line 240 of file Operator.h.

operator|=()

void llvm::FastMathFlags::operator|= ( const FastMathFlags &  OtherFlags )

inline

Definition at line 243 of file Operator.h.

set()

void llvm::FastMathFlags::set ( )

inline

Definition at line 203 of file Operator.h.

Referenced by setFast().

setAllowContract()

void llvm::FastMathFlags::setAllowContract ( bool  B = true )

inline

Definition at line 232 of file Operator.h.

References AllowContract, and B.

Referenced by getDecodedFastMathFlags().

setAllowReassoc()

void llvm::FastMathFlags::setAllowReassoc ( bool  B = true )

inline

Flag setters.

Definition at line 217 of file Operator.h.

References AllowReassoc, and B.

Referenced by getDecodedFastMathFlags().

setAllowReciprocal()

void llvm::FastMathFlags::setAllowReciprocal ( bool  B = true )

inline

Definition at line 229 of file Operator.h.

References AllowReciprocal, and B.

Referenced by getDecodedFastMathFlags().

setApproxFunc()

void llvm::FastMathFlags::setApproxFunc ( bool  B = true )

inline

Definition at line 235 of file Operator.h.

References ApproxFunc, and B.

Referenced by getDecodedFastMathFlags().

setFast()

void llvm::FastMathFlags::setFast ( bool  B = true )

inline

Definition at line 238 of file Operator.h.

References B, clear(), and set().

Referenced by getDecodedFastMathFlags(), and getFast().

setNoInfs()

void llvm::FastMathFlags::setNoInfs ( bool  B = true )

inline

Definition at line 223 of file Operator.h.

References B, and NoInfs.

Referenced by getDecodedFastMathFlags().

setNoNaNs()

void llvm::FastMathFlags::setNoNaNs ( bool  B = true )

inline

Definition at line 220 of file Operator.h.

References B, and NoNaNs.

Referenced by getDecodedFastMathFlags(), and llvm::RecurrenceDescriptor::isReductionPHI().

setNoSignedZeros()

void llvm::FastMathFlags::setNoSignedZeros ( bool  B = true )

inline

Definition at line 226 of file Operator.h.

References B, and NoSignedZeros.

Referenced by getDecodedFastMathFlags(), llvm::RecurrenceDescriptor::isReductionPHI(), and llvm::matchDecomposedSelectPattern().

Friends And Related Function Documentation

FPMathOperator

friend class FPMathOperator

friend

Definition at line 163 of file Operator.h.

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The documentation for this class was generated from the following file:

• include/llvm/IR/Operator.h