LLVM 19.0.0git
Public Member Functions | List of all members
llvm::ProfileSummaryInfo Class Reference

Analysis providing profile information. More...

#include "llvm/Analysis/ProfileSummaryInfo.h"

Public Member Functions

 ProfileSummaryInfo (const Module &M)
 
 ProfileSummaryInfo (ProfileSummaryInfo &&Arg)=default
 
void refresh ()
 If no summary is present, attempt to refresh.
 
bool hasProfileSummary () const
 Returns true if profile summary is available.
 
bool hasSampleProfile () const
 Returns true if module M has sample profile.
 
bool hasInstrumentationProfile () const
 Returns true if module M has instrumentation profile.
 
bool hasCSInstrumentationProfile () const
 Returns true if module M has context sensitive instrumentation profile.
 
bool invalidate (Module &, const PreservedAnalyses &, ModuleAnalysisManager::Invalidator &)
 Handle the invalidation of this information.
 
std::optional< uint64_tgetProfileCount (const CallBase &CallInst, BlockFrequencyInfo *BFI, bool AllowSynthetic=false) const
 Returns the profile count for CallInst.
 
bool hasPartialSampleProfile () const
 Returns true if module M has partial-profile sample profile.
 
bool hasHugeWorkingSetSize () const
 Returns true if the working set size of the code is considered huge.
 
bool hasLargeWorkingSetSize () const
 Returns true if the working set size of the code is considered large.
 
template<typename FuncT >
bool isFunctionEntryHot (const FuncT *F) const
 Returns true if F has hot function entry.
 
template<typename FuncT , typename BFIT >
bool isFunctionHotInCallGraph (const FuncT *F, BFIT &BFI) const
 Returns true if F contains hot code.
 
bool isFunctionEntryCold (const Function *F) const
 Returns true if F has cold function entry.
 
template<typename FuncT , typename BFIT >
bool isFunctionColdInCallGraph (const FuncT *F, BFIT &BFI) const
 Returns true if F contains only cold code.
 
bool isFunctionHotnessUnknown (const Function &F) const
 Returns true if the hotness of F is unknown.
 
template<typename FuncT , typename BFIT >
bool isFunctionHotInCallGraphNthPercentile (int PercentileCutoff, const FuncT *F, BFIT &BFI) const
 Returns true if F contains hot code with regard to a given hot percentile cutoff value.
 
template<typename FuncT , typename BFIT >
bool isFunctionColdInCallGraphNthPercentile (int PercentileCutoff, const FuncT *F, BFIT &BFI) const
 Returns true if F contains cold code with regard to a given cold percentile cutoff value.
 
bool isHotCount (uint64_t C) const
 Returns true if count C is considered hot.
 
bool isColdCount (uint64_t C) const
 Returns true if count C is considered cold.
 
bool isHotCountNthPercentile (int PercentileCutoff, uint64_t C) const
 Returns true if count C is considered hot with regard to a given hot percentile cutoff value.
 
bool isColdCountNthPercentile (int PercentileCutoff, uint64_t C) const
 Returns true if count C is considered cold with regard to a given cold percentile cutoff value.
 
template<typename BBType , typename BFIT >
bool isHotBlock (const BBType *BB, BFIT *BFI) const
 Returns true if BasicBlock BB is considered hot.
 
template<typename BBType , typename BFIT >
bool isColdBlock (const BBType *BB, BFIT *BFI) const
 Returns true if BasicBlock BB is considered cold.
 
template<typename BFIT >
bool isColdBlock (BlockFrequency BlockFreq, const BFIT *BFI) const
 
template<typename BBType , typename BFIT >
bool isHotBlockNthPercentile (int PercentileCutoff, const BBType *BB, BFIT *BFI) const
 
template<typename BFIT >
bool isHotBlockNthPercentile (int PercentileCutoff, BlockFrequency BlockFreq, BFIT *BFI) const
 
template<typename BBType , typename BFIT >
bool isColdBlockNthPercentile (int PercentileCutoff, const BBType *BB, BFIT *BFI) const
 Returns true if BasicBlock BB is considered cold with regard to a given cold percentile cutoff value.
 
template<typename BFIT >
bool isColdBlockNthPercentile (int PercentileCutoff, BlockFrequency BlockFreq, BFIT *BFI) const
 
bool isHotCallSite (const CallBase &CB, BlockFrequencyInfo *BFI) const
 Returns true if the call site CB is considered hot.
 
bool isColdCallSite (const CallBase &CB, BlockFrequencyInfo *BFI) const
 Returns true if call site CB is considered cold.
 
uint64_t getOrCompHotCountThreshold () const
 Returns HotCountThreshold if set.
 
uint64_t getOrCompColdCountThreshold () const
 Returns ColdCountThreshold if set.
 
uint64_t getHotCountThreshold () const
 Returns HotCountThreshold if set.
 
uint64_t getColdCountThreshold () const
 Returns ColdCountThreshold if set.
 

Detailed Description

Analysis providing profile information.

This is an immutable analysis pass that provides ability to query global (program-level) profile information. The main APIs are isHotCount and isColdCount that tells whether a given profile count is considered hot/cold based on the profile summary. This also provides convenience methods to check whether a function is hot or cold.

Definition at line 42 of file ProfileSummaryInfo.h.

Constructor & Destructor Documentation

◆ ProfileSummaryInfo() [1/2]

llvm::ProfileSummaryInfo::ProfileSummaryInfo ( const Module M)
inline

Definition at line 64 of file ProfileSummaryInfo.h.

References refresh().

◆ ProfileSummaryInfo() [2/2]

llvm::ProfileSummaryInfo::ProfileSummaryInfo ( ProfileSummaryInfo &&  Arg)
default

Member Function Documentation

◆ getColdCountThreshold()

uint64_t llvm::ProfileSummaryInfo::getColdCountThreshold ( ) const
inline

Returns ColdCountThreshold if set.

Definition at line 261 of file ProfileSummaryInfo.h.

◆ getHotCountThreshold()

uint64_t llvm::ProfileSummaryInfo::getHotCountThreshold ( ) const
inline

Returns HotCountThreshold if set.

Definition at line 257 of file ProfileSummaryInfo.h.

◆ getOrCompColdCountThreshold()

uint64_t ProfileSummaryInfo::getOrCompColdCountThreshold ( ) const

Returns ColdCountThreshold if set.

Recompute HotCountThreshold if not set.

Definition at line 196 of file ProfileSummaryInfo.cpp.

Referenced by annotateAllFunctions().

◆ getOrCompHotCountThreshold()

uint64_t ProfileSummaryInfo::getOrCompHotCountThreshold ( ) const

Returns HotCountThreshold if set.

Recompute HotCountThreshold if not set.

Definition at line 192 of file ProfileSummaryInfo.cpp.

References UINT64_MAX.

Referenced by annotateAllFunctions().

◆ getProfileCount()

std::optional< uint64_t > ProfileSummaryInfo::getProfileCount ( const CallBase CallInst,
BlockFrequencyInfo BFI,
bool  AllowSynthetic = false 
) const

Returns the profile count for CallInst.

Definition at line 69 of file ProfileSummaryInfo.cpp.

References assert(), and hasSampleProfile().

Referenced by computeFunctionSummary(), isColdCallSite(), isHotCallSite(), and updateCallProfile().

◆ hasCSInstrumentationProfile()

bool llvm::ProfileSummaryInfo::hasCSInstrumentationProfile ( ) const
inline

Returns true if module M has context sensitive instrumentation profile.

Definition at line 86 of file ProfileSummaryInfo.h.

References hasProfileSummary(), and llvm::ProfileSummary::PSK_CSInstr.

Referenced by isColdBlock().

◆ hasHugeWorkingSetSize()

bool ProfileSummaryInfo::hasHugeWorkingSetSize ( ) const

Returns true if the working set size of the code is considered huge.

Definition at line 156 of file ProfileSummaryInfo.cpp.

◆ hasInstrumentationProfile()

bool llvm::ProfileSummaryInfo::hasInstrumentationProfile ( ) const
inline

Returns true if module M has instrumentation profile.

Definition at line 80 of file ProfileSummaryInfo.h.

References hasProfileSummary(), and llvm::ProfileSummary::PSK_Instr.

Referenced by isColdBlock(), and llvm::isPGSOColdCodeOnly().

◆ hasLargeWorkingSetSize()

bool ProfileSummaryInfo::hasLargeWorkingSetSize ( ) const

Returns true if the working set size of the code is considered large.

Definition at line 160 of file ProfileSummaryInfo.cpp.

Referenced by llvm::isPGSOColdCodeOnly().

◆ hasPartialSampleProfile()

bool ProfileSummaryInfo::hasPartialSampleProfile ( ) const

Returns true if module M has partial-profile sample profile.

Definition at line 217 of file ProfileSummaryInfo.cpp.

References hasProfileSummary(), PartialProfile, and llvm::ProfileSummary::PSK_Sample.

Referenced by computeFunctionSummary(), isFunctionHotnessUnknown(), and llvm::isPGSOColdCodeOnly().

◆ hasProfileSummary()

bool llvm::ProfileSummaryInfo::hasProfileSummary ( ) const
inline

◆ hasSampleProfile()

bool llvm::ProfileSummaryInfo::hasSampleProfile ( ) const
inline

◆ invalidate()

bool llvm::ProfileSummaryInfo::invalidate ( Module ,
const PreservedAnalyses ,
ModuleAnalysisManager::Invalidator  
)
inline

Handle the invalidation of this information.

When used as a result of ProfileSummaryAnalysis this method will be called when the module this was computed for changes. Since profile summary is immutable after it is annotated on the module, we return false here.

Definition at line 97 of file ProfileSummaryInfo.h.

◆ isColdBlock() [1/2]

template<typename BFIT >
bool llvm::ProfileSummaryInfo::isColdBlock ( BlockFrequency  BlockFreq,
const BFIT *  BFI 
) const
inline

Definition at line 211 of file ProfileSummaryInfo.h.

References isColdCount().

◆ isColdBlock() [2/2]

template<typename BBType , typename BFIT >
bool llvm::ProfileSummaryInfo::isColdBlock ( const BBType *  BB,
BFIT *  BFI 
) const
inline

Returns true if BasicBlock BB is considered cold.

Definition at line 205 of file ProfileSummaryInfo.h.

References isColdCount().

Referenced by isFunctionColdInCallGraph(), llvm::shouldOptimizeForSizeImpl(), and unswitchLoop().

◆ isColdBlockNthPercentile() [1/2]

template<typename BFIT >
bool llvm::ProfileSummaryInfo::isColdBlockNthPercentile ( int  PercentileCutoff,
BlockFrequency  BlockFreq,
BFIT *  BFI 
) const
inline

Definition at line 241 of file ProfileSummaryInfo.h.

References PercentileCutoff.

◆ isColdBlockNthPercentile() [2/2]

template<typename BBType , typename BFIT >
bool llvm::ProfileSummaryInfo::isColdBlockNthPercentile ( int  PercentileCutoff,
const BBType *  BB,
BFIT *  BFI 
) const
inline

Returns true if BasicBlock BB is considered cold with regard to a given cold percentile cutoff value.

PercentileCutoff is encoded as a 6 digit decimal fixed point number, where the first two digits are the whole part. E.g. 995000 for 99.5 percentile.

Definition at line 235 of file ProfileSummaryInfo.h.

References PercentileCutoff.

Referenced by llvm::shouldOptimizeForSizeImpl().

◆ isColdCallSite()

bool ProfileSummaryInfo::isColdCallSite ( const CallBase CB,
BlockFrequencyInfo BFI 
) const

Returns true if call site CB is considered cold.

Definition at line 206 of file ProfileSummaryInfo.cpp.

References llvm::CallingConv::C, llvm::CallBase::getCaller(), getProfileCount(), llvm::Function::hasProfileData(), hasSampleProfile(), and isColdCount().

◆ isColdCount()

bool ProfileSummaryInfo::isColdCount ( uint64_t  C) const

Returns true if count C is considered cold.

Definition at line 168 of file ProfileSummaryInfo.cpp.

References llvm::CallingConv::C.

Referenced by llvm::sampleprofutil::callsiteIsHot(), getHotness(), isColdBlock(), isColdCallSite(), isFunctionColdInCallGraph(), and isFunctionEntryCold().

◆ isColdCountNthPercentile()

bool ProfileSummaryInfo::isColdCountNthPercentile ( int  PercentileCutoff,
uint64_t  C 
) const

Returns true if count C is considered cold with regard to a given cold percentile cutoff value.

PercentileCutoff is encoded as a 6 digit decimal fixed point number, where the first two digits are the whole part. E.g. 995000 for 99.5 percentile.

Definition at line 187 of file ProfileSummaryInfo.cpp.

References llvm::CallingConv::C, and PercentileCutoff.

Referenced by isColdBlock().

◆ isFunctionColdInCallGraph()

template<typename FuncT , typename BFIT >
bool llvm::ProfileSummaryInfo::isFunctionColdInCallGraph ( const FuncT *  F,
BFIT &  BFI 
) const
inline

Returns true if F contains only cold code.

Definition at line 147 of file ProfileSummaryInfo.h.

References F, hasProfileSummary(), isColdBlock(), and isColdCount().

Referenced by llvm::shouldFuncOptimizeForSizeImpl(), and shouldRunOnFunction().

◆ isFunctionColdInCallGraphNthPercentile()

template<typename FuncT , typename BFIT >
bool llvm::ProfileSummaryInfo::isFunctionColdInCallGraphNthPercentile ( int  PercentileCutoff,
const FuncT *  F,
BFIT &  BFI 
) const
inline

Returns true if F contains cold code with regard to a given cold percentile cutoff value.

Definition at line 176 of file ProfileSummaryInfo.h.

References F, and PercentileCutoff.

Referenced by llvm::shouldFuncOptimizeForSizeImpl().

◆ isFunctionEntryCold()

bool ProfileSummaryInfo::isFunctionEntryCold ( const Function F) const

Returns true if F has cold function entry.

Returns true if the function's entry is a cold.

If it returns false, it either means it is not cold or it is unknown whether it is cold or not (for example, no profile data is available).

Definition at line 96 of file ProfileSummaryInfo.cpp.

References F, hasProfileSummary(), and isColdCount().

Referenced by llvm::ProfileSummaryPrinterPass::run().

◆ isFunctionEntryHot()

template<typename FuncT >
bool llvm::ProfileSummaryInfo::isFunctionEntryHot ( const FuncT *  F) const
inline

Returns true if F has hot function entry.

If it returns false, it either means it is not hot or it is unknown whether it is hot or not (for example, no profile data is available).

Definition at line 115 of file ProfileSummaryInfo.h.

References F, hasProfileSummary(), and isHotCount().

Referenced by llvm::ProfileSummaryPrinterPass::run(), and shouldApply().

◆ isFunctionHotInCallGraph()

template<typename FuncT , typename BFIT >
bool llvm::ProfileSummaryInfo::isFunctionHotInCallGraph ( const FuncT *  F,
BFIT &  BFI 
) const
inline

Returns true if F contains hot code.

Definition at line 127 of file ProfileSummaryInfo.h.

References F, hasProfileSummary(), isHotBlock(), and isHotCount().

◆ isFunctionHotInCallGraphNthPercentile()

template<typename FuncT , typename BFIT >
bool llvm::ProfileSummaryInfo::isFunctionHotInCallGraphNthPercentile ( int  PercentileCutoff,
const FuncT *  F,
BFIT &  BFI 
) const
inline

Returns true if F contains hot code with regard to a given hot percentile cutoff value.

Definition at line 168 of file ProfileSummaryInfo.h.

References F, and PercentileCutoff.

Referenced by llvm::shouldFuncOptimizeForSizeImpl().

◆ isFunctionHotnessUnknown()

bool ProfileSummaryInfo::isFunctionHotnessUnknown ( const Function F) const

Returns true if the hotness of F is unknown.

Definition at line 88 of file ProfileSummaryInfo.cpp.

References assert(), F, and hasPartialSampleProfile().

◆ isHotBlock()

template<typename BBType , typename BFIT >
bool llvm::ProfileSummaryInfo::isHotBlock ( const BBType *  BB,
BFIT *  BFI 
) const
inline

Returns true if BasicBlock BB is considered hot.

Definition at line 198 of file ProfileSummaryInfo.h.

References isHotCount().

Referenced by isFunctionHotInCallGraph().

◆ isHotBlockNthPercentile() [1/2]

template<typename BFIT >
bool llvm::ProfileSummaryInfo::isHotBlockNthPercentile ( int  PercentileCutoff,
BlockFrequency  BlockFreq,
BFIT *  BFI 
) const
inline

Definition at line 224 of file ProfileSummaryInfo.h.

References PercentileCutoff.

◆ isHotBlockNthPercentile() [2/2]

template<typename BBType , typename BFIT >
bool llvm::ProfileSummaryInfo::isHotBlockNthPercentile ( int  PercentileCutoff,
const BBType *  BB,
BFIT *  BFI 
) const
inline

Definition at line 217 of file ProfileSummaryInfo.h.

References PercentileCutoff.

Referenced by llvm::shouldOptimizeForSizeImpl().

◆ isHotCallSite()

bool ProfileSummaryInfo::isHotCallSite ( const CallBase CB,
BlockFrequencyInfo BFI 
) const

Returns true if the call site CB is considered hot.

Definition at line 200 of file ProfileSummaryInfo.cpp.

References llvm::CallingConv::C, getProfileCount(), and isHotCount().

◆ isHotCount()

bool ProfileSummaryInfo::isHotCount ( uint64_t  C) const

◆ isHotCountNthPercentile()

bool ProfileSummaryInfo::isHotCountNthPercentile ( int  PercentileCutoff,
uint64_t  C 
) const

Returns true if count C is considered hot with regard to a given hot percentile cutoff value.

PercentileCutoff is encoded as a 6 digit decimal fixed point number, where the first two digits are the whole part. E.g. 995000 for 99.5 percentile.

Definition at line 182 of file ProfileSummaryInfo.cpp.

References llvm::CallingConv::C, and PercentileCutoff.

Referenced by removeUbsanTraps().

◆ refresh()

void ProfileSummaryInfo::refresh ( )

If no summary is present, attempt to refresh.

Definition at line 50 of file ProfileSummaryInfo.cpp.

References llvm::ProfileSummary::getFromMD(), llvm::Module::getProfileSummary(), and hasProfileSummary().

Referenced by annotateAllFunctions(), and ProfileSummaryInfo().


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