llvm::BlockFrequency Class Reference

#include "llvm/Support/BlockFrequency.h"

Public Member Functions
	BlockFrequency (uint64_t Freq=0)
uint64_t	getFrequency () const
	Returns the frequency as a fixpoint number scaled by the entry frequency.
BlockFrequency &	operator*= (BranchProbability Prob)
	Multiplies with a branch probability.
BlockFrequency	operator* (BranchProbability Prob) const
BlockFrequency &	operator/= (BranchProbability Prob)
	Divide by a non-zero branch probability using saturating arithmetic.
BlockFrequency	operator/ (BranchProbability Prob) const
BlockFrequency &	operator+= (BlockFrequency Freq)
	Adds another block frequency using saturating arithmetic.
BlockFrequency	operator+ (BlockFrequency Freq) const
BlockFrequency &	operator-= (BlockFrequency Freq)
	Subtracts another block frequency using saturating arithmetic.
BlockFrequency	operator- (BlockFrequency Freq) const
std::optional< BlockFrequency >	mul (uint64_t Factor) const
	Multiplies frequency with Factor. Returns nullopt in case of overflow.
BlockFrequency &	operator>>= (const unsigned count)
	Shift block frequency to the right by count digits saturating to 1.
bool	operator< (BlockFrequency RHS) const
bool	operator<= (BlockFrequency RHS) const
bool	operator> (BlockFrequency RHS) const
bool	operator>= (BlockFrequency RHS) const
bool	operator== (BlockFrequency RHS) const

Static Public Member Functions
static uint64_t	getMaxFrequency ()
	Returns the maximum possible frequency, the saturation value.

Detailed Description

Definition at line 25 of file BlockFrequency.h.

Constructor & Destructor Documentation

BlockFrequency()

llvm::BlockFrequency::BlockFrequency ( uint64_t  Freq = 0 )

inline

Definition at line 29 of file BlockFrequency.h.

Member Function Documentation

getFrequency()

uint64_t llvm::BlockFrequency::getFrequency ( ) const

inline

Returns the frequency as a fixpoint number scaled by the entry frequency.

Definition at line 36 of file BlockFrequency.h.

Referenced by llvm::CFGMST< Edge, BBInfo >::buildEdges(), llvm::CodeExtractor::extractCodeRegion(), llvm::RegBankSelect::MBBInsertPoint::frequency(), llvm::RegBankSelect::EdgeInsertPoint::frequency(), llvm::MachineBlockFrequencyInfo::getBlockFreqRelativeToEntryBlock(), llvm::InlineFunction(), llvm::ProfileSummaryInfo::isColdBlock(), llvm::BlockFrequencyInfoImplBase::printBlockFreq(), llvm::SplitIndirectBrCriticalEdges(), and updateCallerBFI().

getMaxFrequency()

static uint64_t llvm::BlockFrequency::getMaxFrequency ( )

inlinestatic

Returns the maximum possible frequency, the saturation value.

Definition at line 32 of file BlockFrequency.h.

References UINT64_MAX.

Referenced by llvm::SpillPlacement::Node::addBias().

mul()

std::optional< BlockFrequency > BlockFrequency::mul

(

uint64_t

Factor

)

const

Multiplies frequency with Factor. Returns nullopt in case of overflow.

Definition at line 41 of file BlockFrequency.cpp.

References llvm::SaturatingMultiply().

operator*()

BlockFrequency BlockFrequency::operator*

(

BranchProbability

Prob

)

const

Definition at line 24 of file BlockFrequency.cpp.

operator*=()

BlockFrequency & BlockFrequency::operator*=

(

BranchProbability

Prob

)

Multiplies with a branch probability.

The computation will never overflow.

Definition at line 19 of file BlockFrequency.cpp.

References llvm::BranchProbability::scale().

operator+()

BlockFrequency llvm::BlockFrequency::operator+ ( BlockFrequency  Freq ) const

inline

Definition at line 59 of file BlockFrequency.h.

operator+=()

BlockFrequency & llvm::BlockFrequency::operator+= ( BlockFrequency  Freq )

inline

Adds another block frequency using saturating arithmetic.

Definition at line 49 of file BlockFrequency.h.

References Before, and UINT64_MAX.

operator-()

BlockFrequency llvm::BlockFrequency::operator- ( BlockFrequency  Freq ) const

inline

Definition at line 74 of file BlockFrequency.h.

operator-=()

BlockFrequency & llvm::BlockFrequency::operator-= ( BlockFrequency  Freq )

inline

Subtracts another block frequency using saturating arithmetic.

Definition at line 66 of file BlockFrequency.h.

operator/()

BlockFrequency BlockFrequency::operator/

(

BranchProbability

Prob

)

const

Definition at line 35 of file BlockFrequency.cpp.

operator/=()

BlockFrequency & BlockFrequency::operator/=

(

BranchProbability

Prob

)

Divide by a non-zero branch probability using saturating arithmetic.

Definition at line 30 of file BlockFrequency.cpp.

References llvm::BranchProbability::scaleByInverse().

operator<()

bool llvm::BlockFrequency::operator< ( BlockFrequency  RHS ) const

inline

Definition at line 96 of file BlockFrequency.h.

References RHS.

operator<=()

bool llvm::BlockFrequency::operator<= ( BlockFrequency  RHS ) const

inline

Definition at line 100 of file BlockFrequency.h.

References RHS.

operator==()

bool llvm::BlockFrequency::operator== ( BlockFrequency  RHS ) const

inline

Definition at line 112 of file BlockFrequency.h.

References RHS.

operator>()

bool llvm::BlockFrequency::operator> ( BlockFrequency  RHS ) const

inline

Definition at line 104 of file BlockFrequency.h.

References RHS.

operator>=()

bool llvm::BlockFrequency::operator>= ( BlockFrequency  RHS ) const

inline

Definition at line 108 of file BlockFrequency.h.

References RHS.

operator>>=()

BlockFrequency & llvm::BlockFrequency::operator>>= ( const unsigned  count )

inline

Shift block frequency to the right by count digits saturating to 1.

Definition at line 84 of file BlockFrequency.h.

References assert(), and llvm::count().

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

• include/llvm/Support/BlockFrequency.h
• lib/Support/BlockFrequency.cpp