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)

Friends
class	FPMathOperator

Detailed Description

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

Definition at line 160 of file Operator.h.

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
AllowReassoc
NoNaNs
NoInfs
NoSignedZeros
AllowReciprocal
AllowContract
ApproxFunc

Definition at line 179 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 193 of file Operator.h.

allowContract()

bool llvm::FastMathFlags::allowContract ( ) const

inline

Definition at line 204 of file Operator.h.

References llvm::bitc::AllowContract.

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

allowReassoc()

bool llvm::FastMathFlags::allowReassoc ( ) const

inline

Flag queries.

Definition at line 199 of file Operator.h.

References llvm::bitc::AllowReassoc.

Referenced by llvm::MachineInstr::copyIRFlags(), SimplifyFAddInst(), SimplifyFDivInst(), SimplifyFMulInst(), and SimplifyFSubInst().

allowReciprocal()

bool llvm::FastMathFlags::allowReciprocal ( ) const

inline

Definition at line 203 of file Operator.h.

References llvm::bitc::AllowReciprocal.

Referenced by llvm::MachineInstr::copyIRFlags(), and shouldKeepFDivF32().

any()

bool llvm::FastMathFlags::any ( ) const

inline

Definition at line 191 of file Operator.h.

Referenced by FunctionNumber().

approxFunc()

bool llvm::FastMathFlags::approxFunc ( ) const

inline

Definition at line 205 of file Operator.h.

References llvm::bitc::ApproxFunc.

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

clear()

void llvm::FastMathFlags::clear ( )

inline

Definition at line 195 of file Operator.h.

Referenced by llvm::IRBuilderBase::clearFastMathFlags().

isFast()

bool llvm::FastMathFlags::isFast ( ) const

inline

'Fast' means all bits are set.

Definition at line 207 of file Operator.h.

References llvm::LegalityPredicates::all().

Referenced by addStackMapLiveVars(), and shouldKeepFDivF32().

noInfs()

bool llvm::FastMathFlags::noInfs ( ) const

inline

Definition at line 201 of file Operator.h.

References llvm::bitc::NoInfs.

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

noNaNs()

bool llvm::FastMathFlags::noNaNs ( ) const

inline

Definition at line 200 of file Operator.h.

References llvm::bitc::NoNaNs.

Referenced by llvm::MachineInstr::copyIRFlags(), llvm::BasicTTIImplBase< AMDGPUTTIImpl >::getIntrinsicInstrCost(), isKnownNonNaN(), SimplifyFAddInst(), SimplifyFCmpInst(), SimplifyFDivInst(), SimplifyFMulInst(), SimplifyFRemInst(), and SimplifyFSubInst().

none()

bool llvm::FastMathFlags::none ( ) const

inline

Definition at line 192 of file Operator.h.

noSignedZeros()

bool llvm::FastMathFlags::noSignedZeros ( ) const

inline

Definition at line 202 of file Operator.h.

References llvm::bitc::NoSignedZeros.

Referenced by llvm::MachineInstr::copyIRFlags(), matchSelectPattern(), SimplifyFAddInst(), SimplifyFDivInst(), SimplifyFMulInst(), and SimplifyFSubInst().

operator &=()

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

inline

Definition at line 233 of file Operator.h.

set()

void llvm::FastMathFlags::set ( )

inline

Definition at line 196 of file Operator.h.

setAllowContract()

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

inline

Definition at line 225 of file Operator.h.

References llvm::bitc::AllowContract.

Referenced by llvm::LLParser::getContext(), and getDecodedFastMathFlags().

setAllowReassoc()

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

inline

Flag setters.

Definition at line 210 of file Operator.h.

References llvm::bitc::AllowReassoc.

Referenced by llvm::LLParser::getContext(), and getDecodedFastMathFlags().

setAllowReciprocal()

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

inline

Definition at line 222 of file Operator.h.

References llvm::bitc::AllowReciprocal.

Referenced by llvm::LLParser::getContext(), and getDecodedFastMathFlags().

setApproxFunc()

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

inline

Definition at line 228 of file Operator.h.

References llvm::bitc::ApproxFunc.

Referenced by llvm::LLParser::getContext(), and getDecodedFastMathFlags().

setFast()

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

inline

Definition at line 231 of file Operator.h.

References clear().

Referenced by addFastMathFlag(), llvm::createMinMaxOp(), createRdxShuffleMask(), llvm::createSimpleTargetReduction(), llvm::InnerLoopVectorizer::emitTransformedIndex(), llvm::LLParser::getContext(), getDecodedFastMathFlags(), getMulHu(), getSqrtCall(), and llvm::InnerLoopVectorizer::getStepVector().

setNoInfs()

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

inline

Definition at line 216 of file Operator.h.

References llvm::bitc::NoInfs.

Referenced by llvm::LLParser::getContext(), and getDecodedFastMathFlags().

setNoNaNs()

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

inline

Definition at line 213 of file Operator.h.

References llvm::bitc::NoNaNs.

Referenced by llvm::IRBuilderBase::CreateFPMaxReduce(), llvm::IRBuilderBase::CreateFPMinReduce(), llvm::LLParser::getContext(), getDecodedFastMathFlags(), and getSqrtCall().

setNoSignedZeros()

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

inline

Definition at line 219 of file Operator.h.

References llvm::bitc::NoSignedZeros.

Referenced by llvm::LLParser::getContext(), getDecodedFastMathFlags(), getSqrtCall(), and llvm::matchSelectPattern().

Friends And Related Function Documentation

FPMathOperator

friend class FPMathOperator

friend

Definition at line 162 of file Operator.h.

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

• include/llvm/IR/Operator.h