PGOInstrumentation.cpp File Reference

#include "llvm/Transforms/Instrumentation/PGOInstrumentation.h"
#include "CFGMST.h"
#include "ValueProfileCollector.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include "llvm/ADT/iterator.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/Analysis/BlockFrequencyInfo.h"
#include "llvm/Analysis/BranchProbabilityInfo.h"
#include "llvm/Analysis/CFG.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/MemoryBuiltins.h"
#include "llvm/Analysis/MemoryProfileInfo.h"
#include "llvm/Analysis/OptimizationRemarkEmitter.h"
#include "llvm/Analysis/ProfileSummaryInfo.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/Comdat.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/EHPersonalities.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalAlias.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InstVisitor.h"
#include "llvm/IR/InstrTypes.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/MDBuilder.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/PassManager.h"
#include "llvm/IR/ProfDataUtils.h"
#include "llvm/IR/ProfileSummary.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/BranchProbability.h"
#include "llvm/Support/CRC.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/DOTGraphTraits.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/HashBuilder.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TargetParser/Triple.h"
#include "llvm/Transforms/Instrumentation.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/MisExpect.h"
#include "llvm/Transforms/Utils/ModuleUtils.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <map>
#include <memory>
#include <numeric>
#include <optional>
#include <set>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>
#include "llvm/ProfileData/InstrProfData.inc"

Go to the source code of this file.

Classes
struct	llvm::GraphTraits< PGOUseFunc * >
struct	llvm::DOTGraphTraits< PGOUseFunc * >

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

Macros
#define	DEBUG_TYPE   "pgo-instrumentation"
#define	VALUE_PROF_KIND(Enumerator, Value, Descr)   Descr,

Typedefs
using	ProfileCount = Function::ProfileCount
using	VPCandidateInfo = ValueProfileCollector::CandidateInfo

Functions
	STATISTIC (NumOfPGOInstrument, "Number of edges instrumented.")
	STATISTIC (NumOfPGOSelectInsts, "Number of select instruction instrumented.")
	STATISTIC (NumOfPGOMemIntrinsics, "Number of mem intrinsics instrumented.")
	STATISTIC (NumOfPGOEdge, "Number of edges.")
	STATISTIC (NumOfPGOBB, "Number of basic-blocks.")
	STATISTIC (NumOfPGOSplit, "Number of critical edge splits.")
	STATISTIC (NumOfPGOFunc, "Number of functions having valid profile counts.")
	STATISTIC (NumOfPGOMismatch, "Number of functions having mismatch profile.")
	STATISTIC (NumOfPGOMissing, "Number of functions without profile.")
	STATISTIC (NumOfMemProfMissing, "Number of functions without memory profile.")
	STATISTIC (NumOfPGOICall, "Number of indirect call value instrumentations.")
	STATISTIC (NumOfCSPGOInstrument, "Number of edges instrumented in CSPGO.")
	STATISTIC (NumOfCSPGOSelectInsts, "Number of select instruction instrumented in CSPGO.")
	STATISTIC (NumOfCSPGOMemIntrinsics, "Number of mem intrinsics instrumented in CSPGO.")
	STATISTIC (NumOfCSPGOEdge, "Number of edges in CSPGO.")
	STATISTIC (NumOfCSPGOBB, "Number of basic-blocks in CSPGO.")
	STATISTIC (NumOfCSPGOSplit, "Number of critical edge splits in CSPGO.")
	STATISTIC (NumOfCSPGOFunc, "Number of functions having valid profile counts in CSPGO.")
	STATISTIC (NumOfCSPGOMismatch, "Number of functions having mismatch profile in CSPGO.")
	STATISTIC (NumOfCSPGOMissing, "Number of functions without profile in CSPGO.")
cl::opt< bool >	llvm::NoPGOWarnMismatch ("no-pgo-warn-mismatch", cl::init(false), cl::Hidden, cl::desc("Use this option to turn off/on " "warnings about profile cfg mismatch."))
static std::string	getBranchCondString (Instruction *TI)
static GlobalVariable *	createIRLevelProfileFlagVar (Module &M, bool IsCS)
static bool	canRenameComdat (Function &F, std::unordered_multimap< Comdat *, GlobalValue * > &ComdatMembers)
static void	populateEHOperandBundle (VPCandidateInfo &Cand, DenseMap< BasicBlock *, ColorVector > &BlockColors, SmallVectorImpl< OperandBundleDef > &OpBundles)
static void	instrumentOneFunc (Function &F, Module *M, TargetLibraryInfo &TLI, BranchProbabilityInfo *BPI, BlockFrequencyInfo *BFI, std::unordered_multimap< Comdat *, GlobalValue * > &ComdatMembers, bool IsCS)
static uint64_t	sumEdgeCount (const ArrayRef< PGOUseEdge * > Edges)
static void	annotateFunctionWithHashMismatch (Function &F, LLVMContext &ctx)
static void	addCallsiteMetadata (Instruction &I, std::vector< 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 void	addCallStack (CallStackTrie &AllocTrie, const AllocationInfo *AllocInfo)
static bool	stackFrameIncludesInlinedCallStack (ArrayRef< Frame > ProfileCallStack, ArrayRef< uint64_t > InlinedCallStack, unsigned StartIndex=0)
static bool	isIndirectBrTarget (BasicBlock *BB)
static void	collectComdatMembers (Module &M, std::unordered_multimap< Comdat *, GlobalValue * > &ComdatMembers)
static bool	skipPGO (const Function &F)
static bool	InstrumentAllFunctions (Module &M, function_ref< TargetLibraryInfo &(Function &)> LookupTLI, function_ref< BranchProbabilityInfo *(Function &)> LookupBPI, function_ref< BlockFrequencyInfo *(Function &)> LookupBFI, bool IsCS)
static void	fixFuncEntryCount (PGOUseFunc &Func, LoopInfo &LI, BranchProbabilityInfo &NBPI)
static void	verifyFuncBFI (PGOUseFunc &Func, LoopInfo &LI, BranchProbabilityInfo &NBPI, uint64_t HotCountThreshold, uint64_t ColdCountThreshold)
static bool	annotateAllFunctions (Module &M, StringRef ProfileFileName, StringRef ProfileRemappingFileName, vfs::FileSystem &FS, function_ref< TargetLibraryInfo &(Function &)> LookupTLI, function_ref< BranchProbabilityInfo *(Function &)> LookupBPI, function_ref< BlockFrequencyInfo *(Function &)> LookupBFI, ProfileSummaryInfo *PSI, bool IsCS)
static std::string	getSimpleNodeName (const BasicBlock *Node)
void	llvm::setIrrLoopHeaderMetadata (Module *M, Instruction *TI, uint64_t Count)

Variables
static cl::opt< std::string >	PGOTestProfileFile ("pgo-test-profile-file", cl::init(""), cl::Hidden, cl::value_desc("filename"), cl::desc("Specify the path of profile data file. This is" "mainly for test purpose."))
static cl::opt< std::string >	PGOTestProfileRemappingFile ("pgo-test-profile-remapping-file", cl::init(""), cl::Hidden, cl::value_desc("filename"), cl::desc("Specify the path of profile remapping file. This is mainly for " "test purpose."))
static cl::opt< bool >	DisableValueProfiling ("disable-vp", cl::init(false), cl::Hidden, cl::desc("Disable Value Profiling"))
static cl::opt< unsigned >	MaxNumAnnotations ("icp-max-annotations", cl::init(3), cl::Hidden, cl::desc("Max number of annotations for a single indirect " "call callsite"))
static cl::opt< unsigned >	MaxNumMemOPAnnotations ("memop-max-annotations", cl::init(4), cl::Hidden, cl::desc("Max number of preicise value annotations for a single memop" "intrinsic"))
static cl::opt< bool >	DoComdatRenaming ("do-comdat-renaming", cl::init(false), cl::Hidden, cl::desc("Append function hash to the name of COMDAT function to avoid " "function hash mismatch due to the preinliner"))
static cl::opt< bool >	PGOWarnMissing ("pgo-warn-missing-function", cl::init(false), cl::Hidden, cl::desc("Use this option to turn on/off " "warnings about missing profile data for " "functions."))
static cl::opt< bool >	NoPGOWarnMismatchComdatWeak ("no-pgo-warn-mismatch-comdat-weak", cl::init(true), cl::Hidden, cl::desc("The option is used to turn on/off " "warnings about hash mismatch for comdat " "or weak functions."))
static cl::opt< bool >	PGOInstrSelect ("pgo-instr-select", cl::init(true), cl::Hidden, cl::desc("Use this option to turn on/off SELECT " "instruction instrumentation. "))
static cl::opt< PGOViewCountsType >	PGOViewRawCounts ("pgo-view-raw-counts", cl::Hidden, cl::desc("A boolean option to show CFG dag or text " "with raw profile counts from " "profile data. See also option " "-pgo-view-counts. To limit graph " "display to only one function, use " "filtering option -view-bfi-func-name."), cl::values(clEnumValN(PGOVCT_None, "none", "do not show."), clEnumValN(PGOVCT_Graph, "graph", "show a graph."), clEnumValN(PGOVCT_Text, "text", "show in text.")))
static cl::opt< bool >	PGOInstrMemOP ("pgo-instr-memop", cl::init(true), cl::Hidden, cl::desc("Use this option to turn on/off " "memory intrinsic size profiling."))
static cl::opt< bool >	EmitBranchProbability ("pgo-emit-branch-prob", cl::init(false), cl::Hidden, cl::desc("When this option is on, the annotated " "branch probability will be emitted as " "optimization remarks: -{Rpass|" "pass-remarks}=pgo-instrumentation"))
static cl::opt< bool >	PGOInstrumentEntry ("pgo-instrument-entry", cl::init(false), cl::Hidden, cl::desc("Force to instrument function entry basicblock."))
static cl::opt< bool >	PGOFunctionEntryCoverage ("pgo-function-entry-coverage", cl::Hidden, cl::desc("Use this option to enable function entry coverage instrumentation."))
static cl::opt< bool >	PGOFixEntryCount ("pgo-fix-entry-count", cl::init(true), cl::Hidden, cl::desc("Fix function entry count in profile use."))
static cl::opt< bool >	PGOVerifyHotBFI ("pgo-verify-hot-bfi", cl::init(false), cl::Hidden, cl::desc("Print out the non-match BFI count if a hot raw profile count " "becomes non-hot, or a cold raw profile count becomes hot. " "The print is enabled under -Rpass-analysis=pgo, or " "internal option -pass-remakrs-analysis=pgo."))
static cl::opt< bool >	PGOVerifyBFI ("pgo-verify-bfi", cl::init(false), cl::Hidden, cl::desc("Print out mismatched BFI counts after setting profile metadata " "The print is enabled under -Rpass-analysis=pgo, or " "internal option -pass-remakrs-analysis=pgo."))
static cl::opt< unsigned >	PGOVerifyBFIRatio ("pgo-verify-bfi-ratio", cl::init(2), cl::Hidden, cl::desc("Set the threshold for pgo-verify-bfi: only print out " "mismatched BFI if the difference percentage is greater than " "this value (in percentage)."))
static cl::opt< unsigned >	PGOVerifyBFICutoff ("pgo-verify-bfi-cutoff", cl::init(5), cl::Hidden, cl::desc("Set the threshold for pgo-verify-bfi: skip the counts whose " "profile count value is below."))
static cl::opt< std::string >	PGOTraceFuncHash ("pgo-trace-func-hash", cl::init("-"), cl::Hidden, cl::value_desc("function name"), cl::desc("Trace the hash of the function with this name."))
static cl::opt< unsigned >	PGOFunctionSizeThreshold ("pgo-function-size-threshold", cl::Hidden, cl::desc("Do not instrument functions smaller than this threshold."))
static cl::opt< bool >	MatchMemProf ("pgo-match-memprof", cl::init(true), cl::Hidden, cl::desc("Perform matching and annotation of memprof profiles."))
static cl::opt< unsigned >	PGOFunctionCriticalEdgeThreshold ("pgo-critical-edge-threshold", cl::init(20000), cl::Hidden, cl::desc("Do not instrument functions with the number of critical edges " " greater than this threshold."))
static cl::opt< bool >	PGOOldCFGHashing ("pgo-instr-old-cfg-hashing", cl::init(false), cl::Hidden, cl::desc("Use the old CFG function hashing"))
static const char *	ValueProfKindDescr []

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "pgo-instrumentation"

Definition at line 137 of file PGOInstrumentation.cpp.

VALUE_PROF_KIND

#define VALUE_PROF_KIND	(		Enumerator,
			Value,
			Descr
	)		Descr,

Typedef Documentation

ProfileCount

using ProfileCount = Function::ProfileCount

Definition at line 134 of file PGOInstrumentation.cpp.

VPCandidateInfo

using VPCandidateInfo = ValueProfileCollector::CandidateInfo

Definition at line 135 of file PGOInstrumentation.cpp.

Function Documentation

addCallsiteMetadata()

static void addCallsiteMetadata ( Instruction &  I, std::vector< uint64_t > &  InlinedCallStack, LLVMContext &  Ctx  )

static

Definition at line 1247 of file PGOInstrumentation.cpp.

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

addCallStack()

static void addCallStack ( CallStackTrie &  AllocTrie, const AllocationInfo *  AllocInfo  )

static

Definition at line 1269 of file PGOInstrumentation.cpp.

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

annotateAllFunctions()

static bool annotateAllFunctions ( Module &  M, StringRef  ProfileFileName, StringRef  ProfileRemappingFileName, vfs::FileSystem &  FS, function_ref< TargetLibraryInfo &(Function &)>  LookupTLI, function_ref< BranchProbabilityInfo *(Function &)>  LookupBPI, function_ref< BlockFrequencyInfo *(Function &)>  LookupBFI, ProfileSummaryInfo *  PSI, bool  IsCS  )

static

Definition at line 2061 of file PGOInstrumentation.cpp.

References ColdCountThreshold, collectComdatMembers(), llvm::IndexedInstrProfReader::create(), llvm::StringRef::data(), llvm::dbgs(), llvm::DS_Warning, E, F, fixFuncEntryCount(), llvm::ProfileSummaryInfo::getOrCompColdCountThreshold(), llvm::ProfileSummaryInfo::getOrCompHotCountThreshold(), llvm::handleAllErrors(), LLVM_DEBUG, llvm::ErrorInfoBase::message(), llvm::InstrProfRecord::NotPseudo, llvm::Function::PCT_Real, PGOFixEntryCount, PGOInstrumentEntry, llvm::PGOVCT_Graph, llvm::PGOVCT_None, llvm::PGOVCT_Text, PGOVerifyBFI, PGOVerifyHotBFI, llvm::PGOViewCounts, PGOViewRawCounts, llvm::InstrProfRecord::PseudoHot, llvm::ProfileSummary::PSK_CSInstr, llvm::ProfileSummary::PSK_Instr, llvm::ProfileSummaryInfo::refresh(), skipPGO(), llvm::SplitIndirectBrCriticalEdges(), verifyFuncBFI(), llvm::ViewBlockFreqFuncName, llvm::ViewGraph(), and llvm::WriteGraph().

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

annotateFunctionWithHashMismatch()

static void annotateFunctionWithHashMismatch ( Function &  F, LLVMContext &  ctx  )

static

Definition at line 1226 of file PGOInstrumentation.cpp.

References llvm::MDBuilder::createString(), F, llvm::MDTuple::get(), N, Names, and llvm::MDNode::operands().

canRenameComdat()

static bool canRenameComdat ( Function &  F, std::unordered_multimap< Comdat *, GlobalValue * > &  ComdatMembers  )

static

Definition at line 669 of file PGOInstrumentation.cpp.

References assert(), llvm::CallingConv::C, llvm::canRenameComdatFunc(), DoComdatRenaming, F, and llvm::make_range().

collectComdatMembers()

static void collectComdatMembers ( Module &  M, std::unordered_multimap< Comdat *, GlobalValue * > &  ComdatMembers  )

static

Definition at line 1840 of file PGOInstrumentation.cpp.

References llvm::CallingConv::C, DoComdatRenaming, and F.

Referenced by annotateAllFunctions(), and InstrumentAllFunctions().

computeStackId() [1/2]

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

static

Definition at line 1265 of file PGOInstrumentation.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 1254 of file PGOInstrumentation.cpp.

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

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

createIRLevelProfileFlagVar()

static GlobalVariable * createIRLevelProfileFlagVar ( Module &  M, bool  IsCS  )

static

Definition at line 374 of file PGOInstrumentation.cpp.

References llvm::DebugInfoCorrelate, llvm::GlobalValue::ExternalLinkage, llvm::Type::getInt64Ty(), llvm::Constant::getIntegerValue(), llvm::GlobalValue::HiddenVisibility, PGOFunctionEntryCoverage, PGOInstrumentEntry, and llvm::GlobalValue::WeakAnyLinkage.

Referenced by InstrumentAllFunctions(), and llvm::PGOInstrumentationGenCreateVar::run().

fixFuncEntryCount()

static void fixFuncEntryCount ( PGOUseFunc &  Func, LoopInfo &  LI, BranchProbabilityInfo &  NBPI  )

static

Definition at line 1940 of file PGOInstrumentation.cpp.

References assert(), llvm::APFloatBase::cmpEqual, llvm::APFloatBase::cmpGreaterThan, llvm::dbgs(), F, llvm::BlockFrequencyInfo::getBlockProfileCount(), llvm::APFloat::getZero(), llvm::APFloatBase::IEEEdouble(), LLVM_DEBUG, llvm::Function::PCT_Real, and llvm::APFloatBase::rmNearestTiesToEven.

Referenced by annotateAllFunctions().

getBranchCondString()

static std::string getBranchCondString ( Instruction *  TI )

static

Definition at line 336 of file PGOInstrumentation.cpp.

References Cond, llvm::raw_ostream::flush(), llvm::BranchInst::getCondition(), llvm::User::getOperand(), llvm::CmpInst::getPredicate(), llvm::Value::getType(), llvm::BranchInst::isConditional(), llvm::ConstantInt::isMinusOne(), llvm::ConstantInt::isOne(), llvm::ConstantInt::isZero(), OS, llvm::Type::print(), and RHS.

Referenced by llvm::setProfMetadata().

getSimpleNodeName()

static std::string getSimpleNodeName ( const BasicBlock *  Node )

static

Definition at line 2291 of file PGOInstrumentation.cpp.

References OS, and Node::printAsOperand().

Referenced by llvm::DOTGraphTraits< PGOUseFunc * >::getNodeLabel().

InstrumentAllFunctions()

static bool InstrumentAllFunctions ( Module &  M, function_ref< TargetLibraryInfo &(Function &)>  LookupTLI, function_ref< BranchProbabilityInfo *(Function &)>  LookupBPI, function_ref< BlockFrequencyInfo *(Function &)>  LookupBFI, bool  IsCS  )

static

Definition at line 1888 of file PGOInstrumentation.cpp.

References collectComdatMembers(), createIRLevelProfileFlagVar(), F, instrumentOneFunc(), and skipPGO().

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

instrumentOneFunc()

static void instrumentOneFunc ( Function &  F, Module *  M, TargetLibraryInfo &  TLI, BranchProbabilityInfo *  BPI, BlockFrequencyInfo *  BFI, std::unordered_multimap< Comdat *, GlobalValue * > &  ComdatMembers, bool  IsCS  )

static

Definition at line 851 of file PGOInstrumentation.cpp.

References assert(), Builder, llvm::classifyEHPersonality(), llvm::colorEHFunclets(), llvm::dbgs(), DisableValueProfiling, llvm::BasicBlock::end(), F, llvm::ConstantInt::get(), llvm::ConstantExpr::getBitCast(), llvm::Intrinsic::getDeclaration(), llvm::BasicBlock::getFirstInsertionPt(), llvm::Type::getInt64Ty(), llvm::Type::getInt8PtrTy(), I, llvm::isFuncletEHPersonality(), LLVM_DEBUG, Name, PGOFunctionEntryCoverage, PGOInstrMemOP, PGOInstrumentEntry, populateEHOperandBundle(), llvm::SplitIndirectBrCriticalEdges(), and ValueProfKindDescr.

Referenced by InstrumentAllFunctions().

isIndirectBrTarget()

static bool isIndirectBrTarget ( BasicBlock *  BB )

static

Definition at line 1717 of file PGOInstrumentation.cpp.

References llvm::predecessors().

populateEHOperandBundle()

static void populateEHOperandBundle ( VPCandidateInfo &  Cand, DenseMap< BasicBlock *, ColorVector > &  BlockColors, SmallVectorImpl< OperandBundleDef > &  OpBundles  )

static

Definition at line 821 of file PGOInstrumentation.cpp.

References llvm::ValueProfileCollector::CandidateInfo::AnnotatedInst, assert(), llvm::SmallVectorImpl< T >::emplace_back(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::empty(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::TinyPtrVector< EltTy >::front(), llvm::Instruction::isEHPad(), llvm::LLVMContext::OB_funclet, and llvm::TinyPtrVector< EltTy >::size().

Referenced by instrumentOneFunc().

skipPGO()

static bool skipPGO ( const Function &  F )

static

Definition at line 1857 of file PGOInstrumentation.cpp.

References llvm::dbgs(), E, F, llvm::Instruction::getNumSuccessors(), I, llvm::isCriticalEdge(), LLVM_DEBUG, PGOFunctionCriticalEdgeThreshold, and PGOFunctionSizeThreshold.

Referenced by annotateAllFunctions(), and InstrumentAllFunctions().

stackFrameIncludesInlinedCallStack()

static bool stackFrameIncludesInlinedCallStack ( ArrayRef< Frame >  ProfileCallStack, ArrayRef< uint64_t >  InlinedCallStack, unsigned  StartIndex = 0  )

static

Definition at line 1285 of file PGOInstrumentation.cpp.

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

STATISTIC() [1/20]

STATISTIC	(	NumOfCSPGOBB	,
		"Number of basic-blocks in CSPGO."
	)

STATISTIC() [2/20]

STATISTIC	(	NumOfCSPGOEdge	,
		"Number of edges in CSPGO."
	)

STATISTIC() [3/20]

STATISTIC	(	NumOfCSPGOFunc	,
		"Number of functions having valid profile counts in CSPGO."
	)

STATISTIC() [4/20]

STATISTIC	(	NumOfCSPGOInstrument	,
		"Number of edges instrumented in CSPGO."
	)

STATISTIC() [5/20]

STATISTIC	(	NumOfCSPGOMemIntrinsics	,
		"Number of mem intrinsics instrumented in CSPGO."
	)

STATISTIC() [6/20]

STATISTIC	(	NumOfCSPGOMismatch	,
		"Number of functions having mismatch profile in CSPGO."
	)

STATISTIC() [7/20]

STATISTIC	(	NumOfCSPGOMissing	,
		"Number of functions without profile in CSPGO."
	)

STATISTIC() [8/20]

STATISTIC	(	NumOfCSPGOSelectInsts	,
		"Number of select instruction instrumented in CSPGO."
	)

STATISTIC() [9/20]

STATISTIC	(	NumOfCSPGOSplit	,
		"Number of critical edge splits in CSPGO."
	)

STATISTIC() [10/20]

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

STATISTIC() [11/20]

STATISTIC	(	NumOfPGOBB	,
		"Number of basic-blocks."
	)

STATISTIC() [12/20]

STATISTIC	(	NumOfPGOEdge	,
		"Number of edges."
	)

STATISTIC() [13/20]

STATISTIC	(	NumOfPGOFunc	,
		"Number of functions having valid profile counts."
	)

STATISTIC() [14/20]

STATISTIC	(	NumOfPGOICall	,
		"Number of indirect call value instrumentations."
	)

STATISTIC() [15/20]

STATISTIC	(	NumOfPGOInstrument	,
		"Number of edges instrumented."
	)

STATISTIC() [16/20]

STATISTIC	(	NumOfPGOMemIntrinsics	,
		"Number of mem intrinsics instrumented."
	)

STATISTIC() [17/20]

STATISTIC	(	NumOfPGOMismatch	,
		"Number of functions having mismatch profile."
	)

STATISTIC() [18/20]

STATISTIC	(	NumOfPGOMissing	,
		"Number of functions without profile."
	)

STATISTIC() [19/20]

STATISTIC	(	NumOfPGOSelectInsts	,
		"Number of select instruction instrumented."
	)

STATISTIC() [20/20]

STATISTIC	(	NumOfPGOSplit	,
		"Number of critical edge splits."
	)

sumEdgeCount()

static uint64_t sumEdgeCount ( const ArrayRef< PGOUseEdge * >  Edges )

static

Definition at line 1017 of file PGOInstrumentation.cpp.

References E, and llvm::Total.

verifyFuncBFI()

static void verifyFuncBFI ( PGOUseFunc &  Func, LoopInfo &  LI, BranchProbabilityInfo &  NBPI, uint64_t  HotCountThreshold, uint64_t  ColdCountThreshold  )

static

Definition at line 1987 of file PGOInstrumentation.cpp.

References ColdCountThreshold, DEBUG_TYPE, llvm::OptimizationRemarkEmitter::emit(), F, llvm::BlockFrequencyInfo::getBlockProfileCount(), PGOVerifyBFICutoff, PGOVerifyBFIRatio, PGOVerifyHotBFI, and llvm::Remark.

Referenced by annotateAllFunctions().

Variable Documentation

DisableValueProfiling

cl::opt< bool > DisableValueProfiling("disable-vp", cl::init(false), cl::Hidden, cl::desc("Disable Value Profiling")) ( "disable-vp"  , cl::init(false)  , cl::Hidden  , cl::desc("Disable Value Profiling")    )

static

Referenced by instrumentOneFunc().

DoComdatRenaming

cl::opt< bool > DoComdatRenaming("do-comdat-renaming", cl::init(false), cl::Hidden, cl::desc("Append function hash to the name of COMDAT function to avoid " "function hash mismatch due to the preinliner")) ( "do-comdat-renaming"  , cl::init(false)  , cl::Hidden  , cl::desc("Append function hash to the name of COMDAT function to avoid " "function hash mismatch due to the preinliner")    )

static

Referenced by canRenameComdat(), and collectComdatMembers().

EmitBranchProbability

cl::opt< bool > EmitBranchProbability("pgo-emit-branch-prob", cl::init(false), cl::Hidden, cl::desc("When this option is on, the annotated " "branch probability will be emitted as " "optimization remarks: -{Rpass|" "pass-remarks}=pgo-instrumentation")) ( "pgo-emit-branch-prob"  , cl::init(false)  , cl::Hidden  , cl::desc("When this option is on, the annotated " "branch probability will be emitted as " "optimization remarks: -{Rpass|" "pass-remarks}=pgo-instrumentation")    )

static

Referenced by llvm::setProfMetadata().

MatchMemProf

cl::opt< bool > MatchMemProf("pgo-match-memprof", cl::init(true), cl::Hidden, cl::desc("Perform matching and annotation of memprof profiles.")) ( "pgo-match-memprof"  , cl::init(true)  , cl::Hidden  , cl::desc("Perform matching and annotation of memprof profiles.")    )

static

MaxNumAnnotations

cl::opt< unsigned > MaxNumAnnotations("icp-max-annotations", cl::init(3), cl::Hidden, cl::desc("Max number of annotations for a single indirect " "call callsite")) ( "icp-max-annotations"  , cl::init(3)  , cl::Hidden  , cl::desc("Max number of annotations for a single indirect " "call callsite")    )

static

MaxNumMemOPAnnotations

cl::opt< unsigned > MaxNumMemOPAnnotations("memop-max-annotations", cl::init(4), cl::Hidden, cl::desc("Max number of preicise value annotations for a single memop" "intrinsic")) ( "memop-max-annotations"  , cl::init(4)  , cl::Hidden  , cl::desc("Max number of preicise value annotations for a single memop" "intrinsic")    )

static

NoPGOWarnMismatchComdatWeak

cl::opt< bool > NoPGOWarnMismatchComdatWeak("no-pgo-warn-mismatch-comdat-weak", cl::init(true), cl::Hidden, cl::desc("The option is used to turn on/off " "warnings about hash mismatch for comdat " "or weak functions.")) ( "no-pgo-warn-mismatch-comdat-weak"  , cl::init(true)  , cl::Hidden  , cl::desc("The option is used to turn on/off " "warnings about hash mismatch for comdat " "or weak functions.")    )

static

PGOFixEntryCount

cl::opt< bool > PGOFixEntryCount("pgo-fix-entry-count", cl::init(true), cl::Hidden, cl::desc("Fix function entry count in profile use.")) ( "pgo-fix-entry-count"  , cl::init(true)  , cl::Hidden  , cl::desc("Fix function entry count in profile use.")    )

static

Referenced by annotateAllFunctions().

PGOFunctionCriticalEdgeThreshold

cl::opt< unsigned > PGOFunctionCriticalEdgeThreshold("pgo-critical-edge-threshold", cl::init(20000), cl::Hidden, cl::desc("Do not instrument functions with the number of critical edges " " greater than this threshold.")) ( "pgo-critical-edge-threshold"  , cl::init(20000)  , cl::Hidden  , cl::desc("Do not instrument functions with the number of critical edges " " greater than this threshold.")    )

static

Referenced by skipPGO().

PGOFunctionEntryCoverage

cl::opt< bool > PGOFunctionEntryCoverage("pgo-function-entry-coverage", cl::Hidden, cl::desc( "Use this option to enable function entry coverage instrumentation.")) ( "pgo-function-entry-coverage"  , cl::Hidden  , cl::desc( "Use this option to enable function entry coverage instrumentation.")    )

static

Referenced by createIRLevelProfileFlagVar(), and instrumentOneFunc().

PGOFunctionSizeThreshold

cl::opt< unsigned > PGOFunctionSizeThreshold("pgo-function-size-threshold", cl::Hidden, cl::desc("Do not instrument functions smaller than this threshold.")) ( "pgo-function-size-threshold"  , cl::Hidden  , cl::desc("Do not instrument functions smaller than this threshold.")    )

static

Referenced by skipPGO().

PGOInstrMemOP

cl::opt< bool > PGOInstrMemOP("pgo-instr-memop", cl::init(true), cl::Hidden, cl::desc("Use this option to turn on/off " "memory intrinsic size profiling.")) ( "pgo-instr-memop"  , cl::init(true)  , cl::Hidden  , cl::desc("Use this option to turn on/off " "memory intrinsic size profiling.")    )

static

Referenced by instrumentOneFunc().

PGOInstrSelect

cl::opt< bool > PGOInstrSelect("pgo-instr-select", cl::init(true), cl::Hidden, cl::desc("Use this option to turn on/off SELECT " "instruction instrumentation. ")) ( "pgo-instr-select"  , cl::init(true)  , cl::Hidden  , cl::desc("Use this option to turn on/off SELECT " "instruction instrumentation. ")    )

static

Referenced by llvm::DOTGraphTraits< PGOUseFunc * >::getNodeLabel().

PGOInstrumentEntry

cl::opt< bool > PGOInstrumentEntry("pgo-instrument-entry", cl::init(false), cl::Hidden, cl::desc("Force to instrument function entry basicblock.")) ( "pgo-instrument-entry"  , cl::init(false)  , cl::Hidden  , cl::desc("Force to instrument function entry basicblock.")    )

static

Referenced by annotateAllFunctions(), createIRLevelProfileFlagVar(), and instrumentOneFunc().

PGOOldCFGHashing

cl::opt< bool > PGOOldCFGHashing("pgo-instr-old-cfg-hashing", cl::init(false), cl::Hidden, cl::desc("Use the old CFG function hashing")) ( "pgo-instr-old-cfg-hashing"  , cl::init(false)  , cl::Hidden  , cl::desc("Use the old CFG function hashing")    )

static

PGOTestProfileFile

cl::opt< std::string > PGOTestProfileFile("pgo-test-profile-file", cl::init(""), cl::Hidden, cl::value_desc("filename"), cl::desc("Specify the path of profile data file. This is" "mainly for test purpose.")) ( "pgo-test-profile-file"  , cl::init("")  , cl::Hidden  , cl::value_desc("filename")  , cl::desc("Specify the path of profile data file. This is" "mainly for test purpose.")    )

static

Referenced by llvm::PGOInstrumentationUse::PGOInstrumentationUse().

PGOTestProfileRemappingFile

cl::opt< std::string > PGOTestProfileRemappingFile("pgo-test-profile-remapping-file", cl::init(""), cl::Hidden, cl::value_desc("filename"), cl::desc("Specify the path of profile remapping file. This is mainly for " "test purpose.")) ( "pgo-test-profile-remapping-file"  , cl::init("")  , cl::Hidden  , cl::value_desc("filename")  , cl::desc("Specify the path of profile remapping file. This is mainly for " "test purpose.")    )

static

Referenced by llvm::PGOInstrumentationUse::PGOInstrumentationUse().

PGOTraceFuncHash

cl::opt< std::string > PGOTraceFuncHash("pgo-trace-func-hash", cl::init("-"), cl::Hidden, cl::value_desc("function name"), cl::desc("Trace the hash of the function with this name.")) ( "pgo-trace-func-hash"  , cl::init("-")  , cl::Hidden  , cl::value_desc("function name")  , cl::desc("Trace the hash of the function with this name.")    )

static

PGOVerifyBFI

cl::opt< bool > PGOVerifyBFI("pgo-verify-bfi", cl::init(false), cl::Hidden, cl::desc("Print out mismatched BFI counts after setting profile metadata " "The print is enabled under -Rpass-analysis=pgo, or " "internal option -pass-remakrs-analysis=pgo.")) ( "pgo-verify-bfi"  , cl::init(false)  , cl::Hidden  , cl::desc("Print out mismatched BFI counts after setting profile metadata " "The print is enabled under -Rpass-analysis=pgo, or " "internal option -pass-remakrs-analysis=pgo.")    )

static

Referenced by annotateAllFunctions().

PGOVerifyBFICutoff

cl::opt< unsigned > PGOVerifyBFICutoff("pgo-verify-bfi-cutoff", cl::init(5), cl::Hidden, cl::desc("Set the threshold for pgo-verify-bfi: skip the counts whose " "profile count value is below.")) ( "pgo-verify-bfi-cutoff"  , cl::init(5)  , cl::Hidden  , cl::desc("Set the threshold for pgo-verify-bfi: skip the counts whose " "profile count value is below.")    )

static

Referenced by verifyFuncBFI().

PGOVerifyBFIRatio

cl::opt< unsigned > PGOVerifyBFIRatio("pgo-verify-bfi-ratio", cl::init(2), cl::Hidden, cl::desc("Set the threshold for pgo-verify-bfi: only print out " "mismatched BFI if the difference percentage is greater than " "this value (in percentage).")) ( "pgo-verify-bfi-ratio"  , cl::init(2)  , cl::Hidden  , cl::desc("Set the threshold for pgo-verify-bfi: only print out " "mismatched BFI if the difference percentage is greater than " "this value (in percentage).")    )

static

Referenced by verifyFuncBFI().

PGOVerifyHotBFI

cl::opt< bool > PGOVerifyHotBFI("pgo-verify-hot-bfi", cl::init(false), cl::Hidden, cl::desc("Print out the non-match BFI count if a hot raw profile count " "becomes non-hot, or a cold raw profile count becomes hot. " "The print is enabled under -Rpass-analysis=pgo, or " "internal option -pass-remakrs-analysis=pgo.")) ( "pgo-verify-hot-bfi"  , cl::init(false)  , cl::Hidden  , cl::desc("Print out the non-match BFI count if a hot raw profile count " "becomes non-hot, or a cold raw profile count becomes hot. " "The print is enabled under -Rpass-analysis=pgo, or " "internal option -pass-remakrs-analysis=pgo.")    )

static

Referenced by annotateAllFunctions(), and verifyFuncBFI().

PGOViewRawCounts

cl::opt< PGOViewCountsType > PGOViewRawCounts("pgo-view-raw-counts", cl::Hidden, cl::desc("A boolean option to show CFG dag or text " "with raw profile counts from " "profile data. See also option " "-pgo-view-counts. To limit graph " "display to only one function, use " "filtering option -view-bfi-func-name."), cl::values(clEnumValN(PGOVCT_None, "none", "do not show."), clEnumValN(PGOVCT_Graph, "graph", "show a graph."), clEnumValN(PGOVCT_Text, "text", "show in text."))) ( "pgo-view-raw-counts"  , cl::Hidden  , cl::desc("A boolean option to show CFG dag or text " "with raw profile counts from " "profile data. See also option " "-pgo-view-counts. To limit graph " "display to only one function, use " "filtering option -view-bfi-func-name.")  , cl::values(clEnumValN(PGOVCT_None, "none", "do not show."), clEnumValN(PGOVCT_Graph, "graph", "show a graph."), clEnumValN(PGOVCT_Text, "text", "show in text."))    )

static

Referenced by annotateAllFunctions().

PGOWarnMissing

cl::opt< bool > PGOWarnMissing("pgo-warn-missing-function", cl::init(false), cl::Hidden, cl::desc("Use this option to turn on/off " "warnings about missing profile data for " "functions.")) ( "pgo-warn-missing-function"  , cl::init(false)  , cl::Hidden  , cl::desc("Use this option to turn on/off " "warnings about missing profile data for " "functions.")    )

static

ValueProfKindDescr

const char* ValueProfKindDescr[]

static

Initial value:

= {
#define VALUE_PROF_KIND(Enumerator, Value, Descr)       
 
}

Definition at line 367 of file PGOInstrumentation.cpp.

Referenced by instrumentOneFunc().