LLVM: llvm::FastMathFlags Class Reference (original) (raw)

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

#include "[llvm/IR/FMF.h](FMF%5F8h%5Fsource.html)"

Public Types
enum { AllowReassoc = (1 << 0) , NoNaNs = (1 << 1) , NoInfs = (1 << 2) , NoSignedZeros = (1 << 3) , AllowReciprocal = (1 << 4) , AllowContract = (1 << 5) , ApproxFunc = (1 << 6) , FlagEnd = (1 << 7) }
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
LLVM_ABI void print (raw_ostream &O) const
Print fast-math flags to O.
Static Public Member Functions
static FastMathFlags getFast ()
static FastMathFlags intersectRewrite (FastMathFlags LHS, FastMathFlags RHS)
Intersect rewrite-based flags.
static FastMathFlags unionValue (FastMathFlags LHS, FastMathFlags RHS)
Union value flags.
Static Public Attributes
static constexpr unsigned AllFlagsMask = FlagEnd - 1
Friends
class FPMathOperator

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

Definition at line 22 of file FMF.h.

◆ anonymous enum

Enumerator
AllowReassoc
NoNaNs
NoInfs
NoSignedZeros
AllowReciprocal
AllowContract
ApproxFunc
FlagEnd

Definition at line 35 of file FMF.h.

llvm::FastMathFlags::FastMathFlags ( ) default

◆ all()

bool llvm::FastMathFlags::all ( ) const inline

◆ allowContract()

bool llvm::FastMathFlags::allowContract ( ) const inline

◆ allowReassoc()

bool llvm::FastMathFlags::allowReassoc ( ) const inline

◆ allowReciprocal()

bool llvm::FastMathFlags::allowReciprocal ( ) const inline

◆ any()

bool llvm::FastMathFlags::any ( ) const inline

Definition at line 56 of file FMF.h.

◆ approxFunc()

bool llvm::FastMathFlags::approxFunc ( ) const inline

◆ clear()

void llvm::FastMathFlags::clear ( ) inline

◆ getFast()

◆ intersectRewrite()

◆ isFast()

bool llvm::FastMathFlags::isFast ( ) const inline

'Fast' means all bits are set.

Definition at line 72 of file FMF.h.

References all().

◆ noInfs()

bool llvm::FastMathFlags::noInfs ( ) const inline

◆ noNaNs()

bool llvm::FastMathFlags::noNaNs ( ) const inline

Definition at line 65 of file FMF.h.

References NoNaNs.

Referenced by llvm::canIgnoreSNaN(), llvm::computeKnownFPClass(), llvm::InstCombinerImpl::foldSelectIntoOp(), llvm::RISCVTTIImpl::getMinMaxReductionCost(), llvm::getRecurrenceIdentity(), isKnownIntegral(), isKnownNonNaN(), llvm::RecurrenceDescriptor::isRecurrenceInstr(), mapToLLVMFastMathFlags(), print(), simplifyFAddInst(), simplifyFCmpInst(), simplifyFDivInst(), simplifyFMAFMul(), simplifyFPOp(), simplifyFRemInst(), and simplifyFSubInst().

◆ none()

bool llvm::FastMathFlags::none ( ) const inline

◆ noSignedZeros()

bool llvm::FastMathFlags::noSignedZeros ( ) const inline

Definition at line 67 of file FMF.h.

References NoSignedZeros.

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

◆ operator!=()

◆ operator&=()

Definition at line 98 of file FMF.h.

◆ operator|=()

◆ print()

◆ set()

void llvm::FastMathFlags::set ( ) inline

◆ setAllowContract()

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

◆ setAllowReassoc()

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

◆ setAllowReciprocal()

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

◆ setApproxFunc()

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

◆ setFast()

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

◆ setNoInfs()

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

◆ setNoNaNs()

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

◆ setNoSignedZeros()

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

◆ unionValue()

◆ FPMathOperator

◆ AllFlagsMask

unsigned llvm::FastMathFlags::AllFlagsMask = FlagEnd - 1 staticconstexpr

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