llvm::CalleeInfo Struct Reference

Class to accumulate and hold information about a callee. More...

#include "llvm/IR/ModuleSummaryIndex.h"

Public Types
enum class	HotnessType : uint8_t {   Unknown = 0 , Cold = 1 , None = 2 , Hot = 3 ,   Critical = 4 }

Public Member Functions
	CalleeInfo ()
	CalleeInfo (HotnessType Hotness, bool HasTC, uint64_t RelBF)
void	updateHotness (const HotnessType OtherHotness)
bool	hasTailCall () const
void	setHasTailCall (const bool HasTC)
HotnessType	getHotness () const
void	updateRelBlockFreq (uint64_t BlockFreq, uint64_t EntryFreq)
	Update RelBlockFreq from BlockFreq and EntryFreq.

Public Attributes
uint32_t	Hotness: 3
bool	HasTailCall: 1
uint32_t	RelBlockFreq: RelBlockFreqBits

Static Public Attributes
static constexpr unsigned	RelBlockFreqBits = 28
	The value stored in RelBlockFreq has to be interpreted as the digits of a scaled number with a scale of -ScaleShift.
static constexpr int32_t	ScaleShift = 8
static constexpr uint64_t	MaxRelBlockFreq = (1 << RelBlockFreqBits) - 1

Detailed Description

Class to accumulate and hold information about a callee.

Definition at line 59 of file ModuleSummaryIndex.h.

Member Enumeration Documentation

HotnessType

enum class llvm::CalleeInfo::HotnessType : uint8_t

strong

Enumerator
Unknown
Cold
None
Hot
Critical

Definition at line 60 of file ModuleSummaryIndex.h.

Constructor & Destructor Documentation

CalleeInfo() [1/2]

llvm::CalleeInfo::CalleeInfo ( )

inline

Definition at line 82 of file ModuleSummaryIndex.h.

CalleeInfo() [2/2]

llvm::CalleeInfo::CalleeInfo ( HotnessType  Hotness, bool  HasTC, uint64_t  RelBF  )

inlineexplicit

Definition at line 85 of file ModuleSummaryIndex.h.

Member Function Documentation

getHotness()

HotnessType llvm::CalleeInfo::getHotness ( ) const

inline

Definition at line 97 of file ModuleSummaryIndex.h.

References Hotness.

hasTailCall()

bool llvm::CalleeInfo::hasTailCall ( ) const

inline

Definition at line 93 of file ModuleSummaryIndex.h.

References HasTailCall.

setHasTailCall()

void llvm::CalleeInfo::setHasTailCall ( const bool  HasTC )

inline

Definition at line 95 of file ModuleSummaryIndex.h.

References HasTailCall.

updateHotness()

void llvm::CalleeInfo::updateHotness ( const HotnessType  OtherHotness )

inline

Definition at line 89 of file ModuleSummaryIndex.h.

References Hotness.

updateRelBlockFreq()

void llvm::CalleeInfo::updateRelBlockFreq ( uint64_t  BlockFreq, uint64_t  EntryFreq  )

inline

Update RelBlockFreq from BlockFreq and EntryFreq.

BlockFreq is divided by EntryFreq and added to RelBlockFreq. To represent fractional values, the result is represented as a fixed point number with scale of -ScaleShift.

Definition at line 104 of file ModuleSummaryIndex.h.

References MaxRelBlockFreq, RelBlockFreq, and ScaleShift.

Member Data Documentation

HasTailCall

bool llvm::CalleeInfo::HasTailCall

Definition at line 73 of file ModuleSummaryIndex.h.

Referenced by getEncodedHotnessCallEdgeInfo(), getEncodedRelBFCallEdgeInfo(), hasTailCall(), and setHasTailCall().

Hotness

uint32_t llvm::CalleeInfo::Hotness

Definition at line 70 of file ModuleSummaryIndex.h.

Referenced by getEncodedHotnessCallEdgeInfo(), getHotness(), and updateHotness().

MaxRelBlockFreq

constexpr uint64_t llvm::CalleeInfo::MaxRelBlockFreq = (1 << RelBlockFreqBits) - 1

staticconstexpr

Definition at line 80 of file ModuleSummaryIndex.h.

Referenced by updateRelBlockFreq().

RelBlockFreq

uint32_t llvm::CalleeInfo::RelBlockFreq

Definition at line 78 of file ModuleSummaryIndex.h.

Referenced by getEncodedRelBFCallEdgeInfo(), and updateRelBlockFreq().

RelBlockFreqBits

constexpr unsigned llvm::CalleeInfo::RelBlockFreqBits = 28

staticconstexpr

The value stored in RelBlockFreq has to be interpreted as the digits of a scaled number with a scale of -ScaleShift.

Definition at line 77 of file ModuleSummaryIndex.h.

Referenced by getDecodedRelBFCallEdgeInfo(), and getEncodedRelBFCallEdgeInfo().

ScaleShift

constexpr int32_t llvm::CalleeInfo::ScaleShift = 8

staticconstexpr

Definition at line 79 of file ModuleSummaryIndex.h.

Referenced by llvm::computeSyntheticCounts(), and updateRelBlockFreq().

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

• include/llvm/IR/ModuleSummaryIndex.h