llvm::FastMathFlags Class Reference

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

#include "llvm/IR/FMF.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.
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.
void	setAllowReassoc (bool B=true)
	Flag setters.
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
void	print (raw_ostream &O) const
	Print fast-math flags to O.

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 20 of file FMF.h.

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
AllowReassoc
NoNaNs
NoInfs
NoSignedZeros
AllowReciprocal
AllowContract
ApproxFunc

Definition at line 39 of file FMF.h.

Constructor & Destructor Documentation

FastMathFlags()

llvm::FastMathFlags::FastMathFlags ( )

default

Member Function Documentation

all()

bool llvm::FastMathFlags::all ( ) const

inline

Definition at line 59 of file FMF.h.

References Flags.

Referenced by isFast(), llvm::InstModificationIRStrategy::mutate(), and print().

allowContract()

bool llvm::FastMathFlags::allowContract ( ) const

inline

Definition at line 70 of file FMF.h.

References AllowContract, and Flags.

Referenced by instCombineSVEVectorFuseMulAddSub(), print(), and llvm::VPRecipeWithIRFlags::VPRecipeWithIRFlags().

allowReassoc()

bool llvm::FastMathFlags::allowReassoc ( ) const

inline

Flag queries.

Definition at line 65 of file FMF.h.

References AllowReassoc, and Flags.

Referenced by getISDForVPIntrinsic(), print(), simplifyFAddInst(), simplifyFDivInst(), simplifyFMAFMul(), simplifyFSubInst(), and llvm::VPRecipeWithIRFlags::VPRecipeWithIRFlags().

allowReciprocal()

bool llvm::FastMathFlags::allowReciprocal ( ) const

inline

Definition at line 69 of file FMF.h.

References AllowReciprocal, and Flags.

Referenced by print(), and llvm::VPRecipeWithIRFlags::VPRecipeWithIRFlags().

any()

bool llvm::FastMathFlags::any ( ) const

inline

Definition at line 57 of file FMF.h.

References Flags.

approxFunc()

bool llvm::FastMathFlags::approxFunc ( ) const

inline

Definition at line 71 of file FMF.h.

References ApproxFunc, and Flags.

Referenced by print(), and llvm::VPRecipeWithIRFlags::VPRecipeWithIRFlags().

clear()

void llvm::FastMathFlags::clear ( )

inline

Definition at line 61 of file FMF.h.

References Flags.

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

getFast()

static FastMathFlags llvm::FastMathFlags::getFast ( )

inlinestatic

Definition at line 51 of file FMF.h.

References setFast().

Referenced by llvm::RecurrenceDescriptor::AddReductionVar().

isFast()

bool llvm::FastMathFlags::isFast ( ) const

inline

'Fast' means all bits are set.

Definition at line 73 of file FMF.h.

References all().

noInfs()

bool llvm::FastMathFlags::noInfs ( ) const

inline

Definition at line 67 of file FMF.h.

References Flags, and NoInfs.

Referenced by foldFNegIntoConstant(), print(), simplifyFDivInst(), simplifyFPOp(), and llvm::VPRecipeWithIRFlags::VPRecipeWithIRFlags().

noNaNs()

bool llvm::FastMathFlags::noNaNs ( ) const

inline

Definition at line 66 of file FMF.h.

References Flags, and NoNaNs.

Referenced by llvm::canIgnoreSNaN(), llvm::RecurrenceDescriptor::getRecurrenceIdentity(), isKnownNonNaN(), llvm::RecurrenceDescriptor::isRecurrenceInstr(), print(), simplifyFAddInst(), simplifyFCmpInst(), simplifyFDivInst(), simplifyFMAFMul(), simplifyFPOp(), simplifyFRemInst(), simplifyFSubInst(), and llvm::VPRecipeWithIRFlags::VPRecipeWithIRFlags().

none()

bool llvm::FastMathFlags::none ( ) const

inline

Definition at line 58 of file FMF.h.

References Flags.

Referenced by llvm::InstModificationIRStrategy::mutate().

noSignedZeros()

bool llvm::FastMathFlags::noSignedZeros ( ) const

inline

Definition at line 68 of file FMF.h.

References Flags, and NoSignedZeros.

Referenced by foldFNegIntoConstant(), llvm::InstCombinerImpl::foldSelectIntoOp(), llvm::RecurrenceDescriptor::getRecurrenceIdentity(), llvm::RecurrenceDescriptor::isRecurrenceInstr(), matchSelectPattern(), print(), simplifyFAddInst(), simplifyFDivInst(), simplifyFMAFMul(), simplifyFSubInst(), llvm::InstCombinerImpl::visitCallInst(), and llvm::VPRecipeWithIRFlags::VPRecipeWithIRFlags().

operator!=()

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

inline

Definition at line 105 of file FMF.h.

References Flags.

operator&=()

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

inline

Definition at line 99 of file FMF.h.

References Flags.

operator|=()

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

inline

Definition at line 102 of file FMF.h.

References Flags.

print()

void llvm::FastMathFlags::print

(

raw_ostream &

O

)

const

Print fast-math flags to O.

Definition at line 235 of file Operator.cpp.

References all(), allowContract(), allowReassoc(), allowReciprocal(), approxFunc(), noInfs(), noNaNs(), and noSignedZeros().

Referenced by llvm::operator<<(), and llvm::VPRecipeWithIRFlags::printFlags().

set()

void llvm::FastMathFlags::set ( )

inline

Definition at line 62 of file FMF.h.

References Flags.

Referenced by setFast().

setAllowContract()

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

inline

Definition at line 91 of file FMF.h.

References AllowContract, B, and Flags.

Referenced by getDecodedFastMathFlags(), and llvm::VPRecipeWithIRFlags::getFastMathFlags().

setAllowReassoc()

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

inline

Flag setters.

Definition at line 76 of file FMF.h.

References AllowReassoc, B, and Flags.

Referenced by getDecodedFastMathFlags(), and llvm::VPRecipeWithIRFlags::getFastMathFlags().

setAllowReciprocal()

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

inline

Definition at line 88 of file FMF.h.

References AllowReciprocal, B, and Flags.

Referenced by getDecodedFastMathFlags(), and llvm::VPRecipeWithIRFlags::getFastMathFlags().

setApproxFunc()

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

inline

Definition at line 94 of file FMF.h.

References ApproxFunc, B, and Flags.

Referenced by getDecodedFastMathFlags(), and llvm::VPRecipeWithIRFlags::getFastMathFlags().

setFast()

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

inline

Definition at line 97 of file FMF.h.

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

Referenced by getDecodedFastMathFlags(), and getFast().

setNoInfs()

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

inline

Definition at line 82 of file FMF.h.

References B, Flags, and NoInfs.

Referenced by getDecodedFastMathFlags(), and llvm::VPRecipeWithIRFlags::getFastMathFlags().

setNoNaNs()

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

inline

Definition at line 79 of file FMF.h.

References B, Flags, and NoNaNs.

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

setNoSignedZeros()

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

inline

Definition at line 85 of file FMF.h.

References B, Flags, and NoSignedZeros.

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

Friends And Related Function Documentation

FPMathOperator

friend class FPMathOperator

friend

Definition at line 22 of file FMF.h.

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

• include/llvm/IR/FMF.h
• lib/IR/Operator.cpp