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)

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 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 199 of file Operator.h.

Referenced by isFast().

allowContract()

bool llvm::FastMathFlags::allowContract ( ) const

inline

Definition at line 210 of file Operator.h.

References AllowContract.

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

allowReassoc()

bool llvm::FastMathFlags::allowReassoc ( ) const

inline

Flag queries.

Definition at line 205 of file Operator.h.

References AllowReassoc.

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

allowReciprocal()

bool llvm::FastMathFlags::allowReciprocal ( ) const

inline

Definition at line 209 of file Operator.h.

References AllowReciprocal.

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

any()

bool llvm::FastMathFlags::any ( ) const

inline

Definition at line 197 of file Operator.h.

approxFunc()

bool llvm::FastMathFlags::approxFunc ( ) const

inline

Definition at line 211 of file Operator.h.

References ApproxFunc.

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

clear()

void llvm::FastMathFlags::clear ( )

inline

Definition at line 201 of file Operator.h.

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

getFast()

static FastMathFlags llvm::FastMathFlags::getFast ( )

inlinestatic

Definition at line 191 of file Operator.h.

References setFast().

isFast()

bool llvm::FastMathFlags::isFast ( ) const

inline

'Fast' means all bits are set.

Definition at line 213 of file Operator.h.

References all().

noInfs()

bool llvm::FastMathFlags::noInfs ( ) const

inline

Definition at line 207 of file Operator.h.

References NoInfs.

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

noNaNs()

bool llvm::FastMathFlags::noNaNs ( ) const

inline

Definition at line 206 of file Operator.h.

References NoNaNs.

Referenced by 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 198 of file Operator.h.

noSignedZeros()

bool llvm::FastMathFlags::noSignedZeros ( ) const

inline

Definition at line 208 of file Operator.h.

References NoSignedZeros.

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

operator&=()

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

inline

Definition at line 239 of file Operator.h.

operator|=()

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

inline

Definition at line 242 of file Operator.h.

set()

void llvm::FastMathFlags::set ( )

inline

Definition at line 202 of file Operator.h.

Referenced by setFast().

setAllowContract()

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

inline

Definition at line 231 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 216 of file Operator.h.

References AllowReassoc, and B.

Referenced by getDecodedFastMathFlags().

setAllowReciprocal()

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

inline

Definition at line 228 of file Operator.h.

References AllowReciprocal, and B.

Referenced by getDecodedFastMathFlags().

setApproxFunc()

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

inline

Definition at line 234 of file Operator.h.

References ApproxFunc, and B.

Referenced by getDecodedFastMathFlags().

setFast()

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

inline

Definition at line 237 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 222 of file Operator.h.

References B, and NoInfs.

Referenced by getDecodedFastMathFlags().

setNoNaNs()

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

inline

Definition at line 219 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 225 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 162 of file Operator.h.

---

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

• include/llvm/IR/Operator.h