MemProfiler.cpp File Reference

#include "llvm/Transforms/Instrumentation/MemProfiler.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Analysis/MemoryBuiltins.h"
#include "llvm/Analysis/MemoryProfileInfo.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Value.h"
#include "llvm/ProfileData/InstrProf.h"
#include "llvm/ProfileData/InstrProfReader.h"
#include "llvm/Support/BLAKE3.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/HashBuilder.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "llvm/TargetParser/Triple.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/LongestCommonSequence.h"
#include "llvm/Transforms/Utils/ModuleUtils.h"
#include <map>
#include <set>

Go to the source code of this file.

Classes
struct	AllocMatchInfo

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Macros
#define	DEBUG_TYPE   "memprof"

Functions
	STATISTIC (NumInstrumentedReads, "Number of instrumented reads")
	STATISTIC (NumInstrumentedWrites, "Number of instrumented writes")
	STATISTIC (NumSkippedStackReads, "Number of non-instrumented stack reads")
	STATISTIC (NumSkippedStackWrites, "Number of non-instrumented stack writes")
	STATISTIC (NumOfMemProfMissing, "Number of functions without memory profile.")
	STATISTIC (NumOfMemProfMismatch, "Number of functions having mismatched memory profile hash.")
	STATISTIC (NumOfMemProfFunc, "Number of functions having valid memory profile.")
	STATISTIC (NumOfMemProfAllocContextProfiles, "Number of alloc contexts in memory profile.")
	STATISTIC (NumOfMemProfCallSiteProfiles, "Number of callsites in memory profile.")
	STATISTIC (NumOfMemProfMatchedAllocContexts, "Number of matched memory profile alloc contexts.")
	STATISTIC (NumOfMemProfMatchedAllocs, "Number of matched memory profile allocs.")
	STATISTIC (NumOfMemProfMatchedCallSites, "Number of matched memory profile callsites.")
void	createProfileFileNameVar (Module &M)
void	createMemprofHistogramFlagVar (Module &M)
void	createMemprofDefaultOptionsVar (Module &M)
static void	addCallsiteMetadata (Instruction &I, ArrayRef< uint64_t > InlinedCallStack, LLVMContext &Ctx)
static uint64_t	computeStackId (GlobalValue::GUID Function, uint32_t LineOffset, uint32_t Column)
static uint64_t	computeStackId (const memprof::Frame &Frame)
static uint64_t	computeFullStackId (ArrayRef< Frame > CallStack)
static AllocationType	addCallStack (CallStackTrie &AllocTrie, const AllocationInfo *AllocInfo, uint64_t FullStackId)
static bool	stackFrameIncludesInlinedCallStack (ArrayRef< Frame > ProfileCallStack, ArrayRef< uint64_t > InlinedCallStack)
static bool	isAllocationWithHotColdVariant (const Function *Callee, const TargetLibraryInfo &TLI)
static void	undriftMemProfRecord (const DenseMap< uint64_t, LocToLocMap > &UndriftMaps, memprof::MemProfRecord &MemProfRec)
static void	readMemprof (Module &M, Function &F, IndexedInstrProfReader *MemProfReader, const TargetLibraryInfo &TLI, std::map< uint64_t, AllocMatchInfo > &FullStackIdToAllocMatchInfo, DenseMap< uint64_t, LocToLocMap > &UndriftMaps)

Variables
cl::opt< bool >	llvm::PGOWarnMissing
cl::opt< bool >	llvm::NoPGOWarnMismatchComdatWeak
constexpr int	LLVM_MEM_PROFILER_VERSION = 1
constexpr uint64_t	DefaultMemGranularity = 64
constexpr uint64_t	HistogramGranularity = 8
constexpr uint64_t	DefaultShadowScale = 3
constexpr char	MemProfModuleCtorName [] = "memprof.module_ctor"
constexpr uint64_t	MemProfCtorAndDtorPriority = 1
constexpr uint64_t	MemProfEmscriptenCtorAndDtorPriority = 50
constexpr char	MemProfInitName [] = "__memprof_init"
constexpr char	MemProfVersionCheckNamePrefix []
constexpr char	MemProfShadowMemoryDynamicAddress []
constexpr char	MemProfFilenameVar [] = "__memprof_profile_filename"
constexpr char	MemProfHistogramFlagVar [] = "__memprof_histogram"
static cl::opt< bool >	ClInsertVersionCheck ("memprof-guard-against-version-mismatch", cl::desc("Guard against compiler/runtime version mismatch."), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClInstrumentReads ("memprof-instrument-reads", cl::desc("instrument read instructions"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClInstrumentWrites ("memprof-instrument-writes", cl::desc("instrument write instructions"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClInstrumentAtomics ("memprof-instrument-atomics", cl::desc("instrument atomic instructions (rmw, cmpxchg)"), cl::Hidden, cl::init(true))
static cl::opt< bool >	ClUseCalls ("memprof-use-callbacks", cl::desc("Use callbacks instead of inline instrumentation sequences."), cl::Hidden, cl::init(false))
static cl::opt< std::string >	ClMemoryAccessCallbackPrefix ("memprof-memory-access-callback-prefix", cl::desc("Prefix for memory access callbacks"), cl::Hidden, cl::init("__memprof_"))
static cl::opt< int >	ClMappingScale ("memprof-mapping-scale", cl::desc("scale of memprof shadow mapping"), cl::Hidden, cl::init(DefaultShadowScale))
static cl::opt< int >	ClMappingGranularity ("memprof-mapping-granularity", cl::desc("granularity of memprof shadow mapping"), cl::Hidden, cl::init(DefaultMemGranularity))
static cl::opt< bool >	ClStack ("memprof-instrument-stack", cl::desc("Instrument scalar stack variables"), cl::Hidden, cl::init(false))
static cl::opt< int >	ClDebug ("memprof-debug", cl::desc("debug"), cl::Hidden, cl::init(0))
static cl::opt< std::string >	ClDebugFunc ("memprof-debug-func", cl::Hidden, cl::desc("Debug func"))
static cl::opt< int >	ClDebugMin ("memprof-debug-min", cl::desc("Debug min inst"), cl::Hidden, cl::init(-1))
static cl::opt< int >	ClDebugMax ("memprof-debug-max", cl::desc("Debug max inst"), cl::Hidden, cl::init(-1))
static cl::opt< bool >	ClMemProfMatchHotColdNew ("memprof-match-hot-cold-new", cl::desc("Match allocation profiles onto existing hot/cold operator new calls"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClHistogram ("memprof-histogram", cl::desc("Collect access count histograms"), cl::Hidden, cl::init(false))
static cl::opt< bool >	ClPrintMemProfMatchInfo ("memprof-print-match-info", cl::desc("Print matching stats for each allocation " "context in this module's profiles"), cl::Hidden, cl::init(false))
static cl::opt< std::string >	MemprofRuntimeDefaultOptions ("memprof-runtime-default-options", cl::desc("The default memprof options"), cl::Hidden, cl::init(""))
static cl::opt< bool >	SalvageStaleProfile ("memprof-salvage-stale-profile", cl::desc("Salvage stale MemProf profile"), cl::init(false), cl::Hidden)
cl::opt< bool >	MemProfReportHintedSizes
static cl::opt< unsigned >	MinMatchedColdBytePercent ("memprof-matching-cold-threshold", cl::init(100), cl::Hidden, cl::desc("Min percent of cold bytes matched to hint allocation cold"))

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "memprof"

Definition at line 53 of file MemProfiler.cpp.

Function Documentation

addCallsiteMetadata()

static void addCallsiteMetadata ( Instruction &  I, ArrayRef< uint64_t >  InlinedCallStack, LLVMContext &  Ctx  )

static

Definition at line 713 of file MemProfiler.cpp.

References llvm::memprof::buildCallstackMetadata(), and I.

Referenced by readMemprof().

addCallStack()

static AllocationType addCallStack ( CallStackTrie &  AllocTrie, const AllocationInfo *  AllocInfo, uint64_t  FullStackId  )

static

Definition at line 748 of file MemProfiler.cpp.

References llvm::memprof::CallStackTrie::addCallStack(), assert(), computeStackId(), llvm::memprof::getAllocType(), MemProfReportHintedSizes, and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by readMemprof().

computeFullStackId()

static uint64_t computeFullStackId ( ArrayRef< Frame >  CallStack )

static

Definition at line 737 of file MemProfiler.cpp.

References llvm::HashBuilder< HasherT, Endianness >::add(), F, llvm::HashBuilderBase< HasherT >::final(), and llvm::little.

Referenced by readMemprof().

computeStackId() [1/2]

static uint64_t computeStackId ( const memprof::Frame &  Frame )

static

Definition at line 731 of file MemProfiler.cpp.

References llvm::memprof::Frame::Column, computeStackId(), llvm::memprof::Frame::Function, and llvm::memprof::Frame::LineOffset.

computeStackId() [2/2]

static uint64_t computeStackId ( GlobalValue::GUID  Function, uint32_t  LineOffset, uint32_t  Column  )

static

Definition at line 720 of file MemProfiler.cpp.

References llvm::HashBuilder< HasherT, Endianness >::add(), llvm::HashBuilderBase< HasherT >::final(), and llvm::little.

Referenced by addCallStack(), computeStackId(), readMemprof(), and stackFrameIncludesInlinedCallStack().

createMemprofDefaultOptionsVar()

void createMemprofDefaultOptionsVar

(

Module &

M

)

Definition at line 564 of file MemProfiler.cpp.

References llvm::GlobalValue::ExternalLinkage, llvm::Value::getName(), llvm::ConstantDataArray::getString(), llvm::Value::getType(), MemprofRuntimeDefaultOptions, llvm::GlobalObject::setComdat(), llvm::GlobalValue::setLinkage(), and llvm::GlobalValue::WeakAnyLinkage.

createMemprofHistogramFlagVar()

void createMemprofHistogramFlagVar

(

Module &

M

)

Definition at line 550 of file MemProfiler.cpp.

References llvm::appendToCompilerUsed(), ClHistogram, llvm::GlobalValue::ExternalLinkage, llvm::Type::getInt1Ty(), llvm::Constant::getIntegerValue(), MemProfHistogramFlagVar, and llvm::GlobalValue::WeakAnyLinkage.

createProfileFileNameVar()

void createProfileFileNameVar

(

Module &

M

)

Definition at line 529 of file MemProfiler.cpp.

References assert(), llvm::StringRef::empty(), llvm::GlobalValue::ExternalLinkage, llvm::MDString::getString(), llvm::ConstantDataArray::getString(), llvm::Value::getType(), MemProfFilenameVar, llvm::GlobalObject::setComdat(), llvm::GlobalValue::setLinkage(), and llvm::GlobalValue::WeakAnyLinkage.

isAllocationWithHotColdVariant()

static bool isAllocationWithHotColdVariant ( const Function *  Callee, const TargetLibraryInfo &  TLI  )

static

Definition at line 789 of file MemProfiler.cpp.

References ClMemProfMatchHotColdNew, and llvm::TargetLibraryInfo::getLibFunc().

Referenced by llvm::memprof::extractCallsFromIR(), and readMemprof().

readMemprof()

static void readMemprof ( Module &  M, Function &  F, IndexedInstrProfReader *  MemProfReader, const TargetLibraryInfo &  TLI, std::map< uint64_t, AllocMatchInfo > &  FullStackIdToAllocMatchInfo, DenseMap< uint64_t, LocToLocMap > &  UndriftMaps  )

static

Definition at line 947 of file MemProfiler.cpp.

References addCallsiteMetadata(), addCallStack(), llvm::memprof::CallStackTrie::addSingleAllocTypeAttribute(), assert(), llvm::GlobalValue::AvailableExternallyLinkage, llvm::memprof::CallStackTrie::buildAndAttachMIBMetadata(), ClPrintMemProfMatchInfo, llvm::Cold, computeFullStackId(), computeStackId(), llvm::dbgs(), llvm::DS_Warning, llvm::memprof::CallStackTrie::empty(), F, llvm::InstrProfError::get(), llvm::GlobalValue::getGUID(), llvm::handleAllErrors(), llvm::hash_mismatch, I, Idx, isAllocationWithHotColdVariant(), LLVM_DEBUG, MemProfReportHintedSizes, llvm::InstrProfError::message(), MinMatchedColdBytePercent, Name, llvm::NoPGOWarnMismatch, llvm::NoPGOWarnMismatchComdatWeak, llvm::PGOWarnMissing, llvm::SmallVectorTemplateBase< T, bool >::push_back(), SalvageStaleProfile, stackFrameIncludesInlinedCallStack(), undriftMemProfRecord(), and llvm::unknown_function.

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

stackFrameIncludesInlinedCallStack()

static bool stackFrameIncludesInlinedCallStack ( ArrayRef< Frame >  ProfileCallStack, ArrayRef< uint64_t >  InlinedCallStack  )

static

Definition at line 773 of file MemProfiler.cpp.

References llvm::ArrayRef< T >::begin(), computeStackId(), and llvm::ArrayRef< T >::end().

Referenced by readMemprof().

STATISTIC() [1/12]

STATISTIC	(	NumInstrumentedReads	,
		"Number of instrumented reads"
	)

STATISTIC() [2/12]

STATISTIC	(	NumInstrumentedWrites	,
		"Number of instrumented writes"
	)

STATISTIC() [3/12]

STATISTIC	(	NumOfMemProfAllocContextProfiles	,
		"Number of alloc contexts in memory profile."
	)

STATISTIC() [4/12]

STATISTIC	(	NumOfMemProfCallSiteProfiles	,
		"Number of callsites in memory profile."
	)

STATISTIC() [5/12]

STATISTIC	(	NumOfMemProfFunc	,
		"Number of functions having valid memory profile."
	)

STATISTIC() [6/12]

STATISTIC	(	NumOfMemProfMatchedAllocContexts	,
		"Number of matched memory profile alloc contexts."
	)

STATISTIC() [7/12]

STATISTIC	(	NumOfMemProfMatchedAllocs	,
		"Number of matched memory profile allocs."
	)

STATISTIC() [8/12]

STATISTIC	(	NumOfMemProfMatchedCallSites	,
		"Number of matched memory profile callsites."
	)

STATISTIC() [9/12]

STATISTIC	(	NumOfMemProfMismatch	,
		"Number of functions having mismatched memory profile hash."
	)

STATISTIC() [10/12]

STATISTIC	(	NumOfMemProfMissing	,
		"Number of functions without memory profile."
	)

STATISTIC() [11/12]

STATISTIC	(	NumSkippedStackReads	,
		"Number of non-instrumented stack reads"
	)

STATISTIC() [12/12]

STATISTIC	(	NumSkippedStackWrites	,
		"Number of non-instrumented stack writes"
	)

undriftMemProfRecord()

static void undriftMemProfRecord ( const DenseMap< uint64_t, LocToLocMap > &  UndriftMaps, memprof::MemProfRecord &  MemProfRec  )

static

Definition at line 922 of file MemProfiler.cpp.

References llvm::memprof::MemProfRecord::AllocSites, llvm::memprof::MemProfRecord::CallSites, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), F, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), and I.

Referenced by readMemprof().

Variable Documentation

ClDebug

cl::opt< int > ClDebug("memprof-debug", cl::desc("debug"), cl::Hidden, cl::init(0)) ( "memprof-debug"  , cl::desc("debug")  , cl::Hidden  , cl::init(0)    )

static

ClDebugFunc

cl::opt< std::string > ClDebugFunc("memprof-debug-func", cl::Hidden, cl::desc("Debug func")) ( "memprof-debug-func"  , cl::Hidden  , cl::desc("Debug func")    )

static

ClDebugMax

cl::opt< int > ClDebugMax("memprof-debug-max", cl::desc("Debug max inst"), cl::Hidden, cl::init(-1)) ( "memprof-debug-max"  , cl::desc("Debug max inst")  , cl::Hidden  , cl::init(-1)    )

static

ClDebugMin

cl::opt< int > ClDebugMin("memprof-debug-min", cl::desc("Debug min inst"), cl::Hidden, cl::init(-1)) ( "memprof-debug-min"  , cl::desc("Debug min inst")  , cl::Hidden  , cl::init(-1)    )

static

ClHistogram

cl::opt< bool > ClHistogram("memprof-histogram", cl::desc("Collect access count histograms"), cl::Hidden, cl::init(false)) ( "memprof-histogram"  , cl::desc("Collect access count histograms")  , cl::Hidden  , cl::init(false)    )

static

Referenced by createMemprofHistogramFlagVar(), and llvm::MemProfilerPass::run().

ClInsertVersionCheck

cl::opt< bool > ClInsertVersionCheck("memprof-guard-against-version-mismatch", cl::desc("Guard against compiler/runtime version mismatch."), cl::Hidden, cl::init(true)) ( "memprof-guard-against-version-mismatch"  , cl::desc("Guard against compiler/runtime version mismatch.")  , cl::Hidden  , cl::init(true)    )

static

ClInstrumentAtomics

cl::opt< bool > ClInstrumentAtomics("memprof-instrument-atomics", cl::desc("instrument atomic instructions (rmw, cmpxchg)"), cl::Hidden, cl::init(true)) ( "memprof-instrument-atomics"  , cl::desc("instrument atomic instructions (rmw, cmpxchg)")  , cl::Hidden  , cl::init(true)    )

static

ClInstrumentReads

cl::opt< bool > ClInstrumentReads("memprof-instrument-reads", cl::desc("instrument read instructions"), cl::Hidden, cl::init(true)) ( "memprof-instrument-reads"  , cl::desc("instrument read instructions")  , cl::Hidden  , cl::init(true)    )

static

ClInstrumentWrites

cl::opt< bool > ClInstrumentWrites("memprof-instrument-writes", cl::desc("instrument write instructions"), cl::Hidden, cl::init(true)) ( "memprof-instrument-writes"  , cl::desc("instrument write instructions")  , cl::Hidden  , cl::init(true)    )

static

ClMappingGranularity

cl::opt< int > ClMappingGranularity("memprof-mapping-granularity", cl::desc("granularity of memprof shadow mapping"), cl::Hidden, cl::init(DefaultMemGranularity)) ( "memprof-mapping-granularity"  , cl::desc("granularity of memprof shadow mapping")  , cl::Hidden  , cl::init(DefaultMemGranularity)    )

static

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

ClMappingScale

cl::opt< int > ClMappingScale("memprof-mapping-scale", cl::desc("scale of memprof shadow mapping"), cl::Hidden, cl::init(DefaultShadowScale)) ( "memprof-mapping-scale"  , cl::desc("scale of memprof shadow mapping")  , cl::Hidden  , cl::init(DefaultShadowScale)    )

static

ClMemoryAccessCallbackPrefix

cl::opt< std::string > ClMemoryAccessCallbackPrefix("memprof-memory-access-callback-prefix", cl::desc("Prefix for memory access callbacks"), cl::Hidden, cl::init("__memprof_")) ( "memprof-memory-access-callback-prefix"  , cl::desc("Prefix for memory access callbacks")  , cl::Hidden  , cl::init("__memprof_")    )

static

ClMemProfMatchHotColdNew

cl::opt< bool > ClMemProfMatchHotColdNew("memprof-match-hot-cold-new", cl::desc( "Match allocation profiles onto existing hot/cold operator new calls"), cl::Hidden, cl::init(false)) ( "memprof-match-hot-cold-new"  , cl::desc( "Match allocation profiles onto existing hot/cold operator new calls")  , cl::Hidden  , cl::init(false)    )

static

Referenced by isAllocationWithHotColdVariant().

ClPrintMemProfMatchInfo

cl::opt< bool > ClPrintMemProfMatchInfo("memprof-print-match-info", cl::desc("Print matching stats for each allocation " "context in this module's profiles"), cl::Hidden, cl::init(false)) ( "memprof-print-match-info"  , cl::desc("Print matching stats for each allocation " "context in this module's profiles")  , cl::Hidden  , cl::init(false)    )

static

Referenced by readMemprof(), and llvm::MemProfUsePass::run().

ClStack

cl::opt< bool > ClStack("memprof-instrument-stack", cl::desc("Instrument scalar stack variables"), cl::Hidden, cl::init(false)) ( "memprof-instrument-stack"  , cl::desc("Instrument scalar stack variables")  , cl::Hidden  , cl::init(false)    )

static

ClUseCalls

cl::opt< bool > ClUseCalls("memprof-use-callbacks", cl::desc("Use callbacks instead of inline instrumentation sequences."), cl::Hidden, cl::init(false)) ( "memprof-use-callbacks"  , cl::desc("Use callbacks instead of inline instrumentation sequences.")  , cl::Hidden  , cl::init(false)    )

static

DefaultMemGranularity

constexpr uint64_t DefaultMemGranularity = 64

constexpr

Definition at line 64 of file MemProfiler.cpp.

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

DefaultShadowScale

constexpr uint64_t DefaultShadowScale = 3

constexpr

Definition at line 70 of file MemProfiler.cpp.

HistogramGranularity

constexpr uint64_t HistogramGranularity = 8

constexpr

Definition at line 67 of file MemProfiler.cpp.

LLVM_MEM_PROFILER_VERSION

constexpr int LLVM_MEM_PROFILER_VERSION = 1

constexpr

Definition at line 61 of file MemProfiler.cpp.

MemProfCtorAndDtorPriority

constexpr uint64_t MemProfCtorAndDtorPriority = 1

constexpr

Definition at line 73 of file MemProfiler.cpp.

MemProfEmscriptenCtorAndDtorPriority

constexpr uint64_t MemProfEmscriptenCtorAndDtorPriority = 50

constexpr

Definition at line 75 of file MemProfiler.cpp.

MemProfFilenameVar

constexpr char MemProfFilenameVar[] = "__memprof_profile_filename"

constexpr

Definition at line 83 of file MemProfiler.cpp.

Referenced by createProfileFileNameVar().

MemProfHistogramFlagVar

constexpr char MemProfHistogramFlagVar[] = "__memprof_histogram"

constexpr

Definition at line 85 of file MemProfiler.cpp.

Referenced by createMemprofHistogramFlagVar().

MemProfInitName

constexpr char MemProfInitName[] = "__memprof_init"

constexpr

Definition at line 76 of file MemProfiler.cpp.

MemProfModuleCtorName

constexpr char MemProfModuleCtorName[] = "memprof.module_ctor"

constexpr

Definition at line 72 of file MemProfiler.cpp.

MemProfReportHintedSizes

cl::opt<bool> MemProfReportHintedSizes

extern

MemprofRuntimeDefaultOptions

cl::opt< std::string > MemprofRuntimeDefaultOptions("memprof-runtime-default-options", cl::desc("The default memprof options"), cl::Hidden, cl::init("")) ( "memprof-runtime-default-options"  , cl::desc("The default memprof options")  , cl::Hidden  , cl::init("")    )

static

Referenced by createMemprofDefaultOptionsVar().

MemProfShadowMemoryDynamicAddress

constexpr char MemProfShadowMemoryDynamicAddress[]

constexpr

Initial value:

=
    "__memprof_shadow_memory_dynamic_address"

Definition at line 80 of file MemProfiler.cpp.

MemProfVersionCheckNamePrefix

constexpr char MemProfVersionCheckNamePrefix[]

constexpr

Initial value:

=
    "__memprof_version_mismatch_check_v"

Definition at line 77 of file MemProfiler.cpp.

MinMatchedColdBytePercent

cl::opt< unsigned > MinMatchedColdBytePercent("memprof-matching-cold-threshold", cl::init(100), cl::Hidden, cl::desc("Min percent of cold bytes matched to hint allocation cold")) ( "memprof-matching-cold-threshold"  , cl::init(100)  , cl::Hidden  , cl::desc("Min percent of cold bytes matched to hint allocation cold")    )

static

Referenced by readMemprof().

SalvageStaleProfile

cl::opt< bool > SalvageStaleProfile("memprof-salvage-stale-profile", cl::desc("Salvage stale MemProf profile"), cl::init(false), cl::Hidden) ( "memprof-salvage-stale-profile"  , cl::desc("Salvage stale MemProf profile")  , cl::init(false)  , cl::Hidden    )

static

Referenced by readMemprof(), llvm::MemProfUsePass::run(), and llvm::SampleProfileMatcher::runOnModule().