PGOInstrumentation.cpp File Reference

#include "llvm/Transforms/Instrumentation/PGOInstrumentation.h"
#include "CFGMST.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/Triple.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/IndirectCallVisitor.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/OptimizationRemarkEmitter.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/CFG.h"
#include "llvm/IR/CallSite.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/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/ProfileSummary.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Value.h"
#include "llvm/Pass.h"
#include "llvm/ProfileData/InstrProf.h"
#include "llvm/ProfileData/InstrProfReader.h"
#include "llvm/Support/BranchProbability.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/JamCRC.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Transforms/Instrumentation.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <memory>
#include <numeric>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>

Go to the source code of this file.

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

Namespaces
	llvm
	This class represents lattice values for constants.

Macros
#define	DEBUG_TYPE   "pgo-instrumentation"

Typedefs
using	ProfileCount = Function::ProfileCount

Enumerations
enum	VisitMode
	The select instruction visitor plays three roles specified by the mode. More...

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 (NumOfPGOICall, "Number of indirect call value instrumentations.")
static std::string	getBranchCondString (Instruction *TI)
	INITIALIZE_PASS_BEGIN (PGOInstrumentationGenLegacyPass, "pgo-instr-gen", "PGO instrumentation.", false, false) INITIALIZE_PASS_END(PGOInstrumentationGenLegacyPass
	INITIALIZE_PASS_BEGIN (PGOInstrumentationUseLegacyPass, "pgo-instr-use", "Read PGO instrumentation profile.", false, false) INITIALIZE_PASS_END(PGOInstrumentationUseLegacyPass
static bool	canRenameComdat (Function &F, std::unordered_multimap< Comdat *, GlobalValue *> &ComdatMembers)
static void	instrumentOneFunc (Function &F, Module *M, BranchProbabilityInfo *BPI, BlockFrequencyInfo *BFI, std::unordered_multimap< Comdat *, GlobalValue *> &ComdatMembers)
static uint64_t	sumEdgeCount (const ArrayRef< PGOUseEdge *> Edges)
static bool	isIndirectBrTarget (BasicBlock *BB)
static void	createIRLevelProfileFlagVariable (Module &M)
static void	collectComdatMembers (Module &M, std::unordered_multimap< Comdat *, GlobalValue *> &ComdatMembers)
static bool	InstrumentAllFunctions (Module &M, function_ref< BranchProbabilityInfo *(Function &)> LookupBPI, function_ref< BlockFrequencyInfo *(Function &)> LookupBFI)
static bool	annotateAllFunctions (Module &M, StringRef ProfileFileName, StringRef ProfileRemappingFileName, function_ref< BranchProbabilityInfo *(Function &)> LookupBPI, function_ref< BlockFrequencyInfo *(Function &)> LookupBFI)
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::ZeroOrMore, 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::ZeroOrMore, 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 >	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 cl::opt< bool >	NoPGOWarnMismatchComdat ("no-pgo-warn-mismatch-comdat", cl::init(true), cl::Hidden, cl::desc("The option is used to turn on/off " "warnings about hash mismatch for comdat " "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"))
cl::opt< PGOViewCountsType >	PGOViewCounts
cl::opt< std::string >	ViewBlockFreqFuncName
pgo instr	gen
pgo instr PGO	instrumentation
pgo instr PGO	false
pgo instr	use
pgo instr Read PGO instrumentation	profile

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "pgo-instrumentation"

Definition at line 124 of file PGOInstrumentation.cpp.

Referenced by llvm::setProfMetadata().

Typedef Documentation

ProfileCount

using ProfileCount = Function::ProfileCount

Definition at line 122 of file PGOInstrumentation.cpp.

Enumeration Type Documentation

VisitMode

enum VisitMode

The select instruction visitor plays three roles specified by the mode.

In VM_counting mode, it simply counts the number of select instructions. In VM_instrument mode, it inserts code to count the number times TrueValue of select is taken. In VM_annotate mode, it reads the profile data and annotate the select instruction with metadata.

Definition at line 283 of file PGOInstrumentation.cpp.

Function Documentation

annotateAllFunctions()

static bool annotateAllFunctions ( Module &  M, StringRef  ProfileFileName, StringRef  ProfileRemappingFileName, function_ref< BranchProbabilityInfo *(Function &)>  LookupBPI, function_ref< BlockFrequencyInfo *(Function &)>  LookupBFI  )

static

Definition at line 1438 of file PGOInstrumentation.cpp.

References llvm::AMDGPUISD::BFI, llvm::Attribute::Cold, collectComdatMembers(), llvm::IndexedInstrProfReader::create(), llvm::StringRef::data(), llvm::dbgs(), F(), llvm::Module::getContext(), llvm::handleAllErrors(), llvm::Attribute::InlineHint, LLVM_DEBUG, llvm::ErrorInfoBase::message(), llvm::Function::PCT_Real, llvm::PGOVCT_Graph, llvm::PGOVCT_None, llvm::PGOVCT_Text, PGOViewCounts, PGOViewRawCounts, llvm::SplitIndirectBrCriticalEdges(), ViewBlockFreqFuncName, ViewGraph(), and llvm::WriteGraph().

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

canRenameComdat()

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

static

Definition at line 613 of file PGOInstrumentation.cpp.

References assert(), llvm::GlobalValue::AvailableExternallyLinkage, C, llvm::canRenameComdatFunc(), llvm::GlobalAlias::create(), llvm::dbgs(), DoComdatRenaming, llvm::dyn_cast(), E, F(), llvm::GlobalObject::getComdat(), llvm::Comdat::getName(), llvm::Instruction::getNumSuccessors(), llvm::Module::getOrInsertComdat(), llvm::Comdat::getSelectionKind(), llvm::GetSuccessorNumber(), llvm::BasicBlock::getTerminator(), llvm::GlobalValue::LinkOnceODRLinkage, LLVM_DEBUG, llvm::make_range(), llvm::GlobalObject::setComdat(), llvm::Comdat::setSelectionKind(), llvm::SplitCriticalEdge(), llvm::Twine::str(), and llvm::GlobalValue::WeakAnyLinkage.

collectComdatMembers()

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

static

Definition at line 1375 of file PGOInstrumentation.cpp.

References C, DoComdatRenaming, and F().

Referenced by annotateAllFunctions(), and InstrumentAllFunctions().

createIRLevelProfileFlagVariable()

static void createIRLevelProfileFlagVariable ( Module &  M )

static

Definition at line 1357 of file PGOInstrumentation.cpp.

References llvm::GlobalValue::DefaultVisibility, llvm::GlobalValue::ExternalLinkage, llvm::Module::getContext(), llvm::Type::getInt64Ty(), llvm::Constant::getIntegerValue(), llvm::Module::getOrInsertComdat(), llvm::Module::getTargetTriple(), and llvm::GlobalValue::WeakAnyLinkage.

Referenced by InstrumentAllFunctions().

getBranchCondString()

static std::string getBranchCondString ( Instruction *  TI )

static

Definition at line 245 of file PGOInstrumentation.cpp.

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

Referenced by llvm::setProfMetadata().

getSimpleNodeName()

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

static

Definition at line 1590 of file PGOInstrumentation.cpp.

INITIALIZE_PASS_BEGIN() [1/2]

INITIALIZE_PASS_BEGIN	(	PGOInstrumentationGenLegacyPass	,
		"pgo-instr-gen"	,
		"PGO instrumentation."	,
		false	,
		false
	)

Referenced by llvm::createPGOInstrumentationGenLegacyPass().

INITIALIZE_PASS_BEGIN() [2/2]

INITIALIZE_PASS_BEGIN	(	PGOInstrumentationUseLegacyPass	,
		"pgo-instr-use"	,
		"Read PGO instrumentation profile."	,
		false	,
		false
	)

InstrumentAllFunctions()

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

static

Definition at line 1391 of file PGOInstrumentation.cpp.

References llvm::AMDGPUISD::BFI, collectComdatMembers(), createIRLevelProfileFlagVariable(), F(), and instrumentOneFunc().

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

instrumentOneFunc()

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

static

Definition at line 722 of file PGOInstrumentation.cpp.

References assert(), C, Callee, llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::IRBuilder< T, Inserter >::CreatePtrToInt(), llvm::dbgs(), DisableValueProfiling, llvm::BasicBlock::end(), llvm::ConstantExpr::getBitCast(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getCalledValue(), llvm::Module::getContext(), llvm::Intrinsic::getDeclaration(), llvm::BasicBlock::getFirstInsertionPt(), llvm::IRBuilderBase::GetInsertPoint(), llvm::IRBuilderBase::getInt32(), llvm::IRBuilderBase::getInt64(), llvm::IRBuilderBase::getInt64Ty(), llvm::Type::getInt8PtrTy(), I, llvm::Intrinsic::instrprof_increment, llvm::Intrinsic::instrprof_value_profile, LLVM_DEBUG, llvm::SplitIndirectBrCriticalEdges(), and llvm::RISCVFenceField::W.

Referenced by InstrumentAllFunctions().

isIndirectBrTarget()

static bool isIndirectBrTarget ( BasicBlock *  BB )

static

Definition at line 1202 of file PGOInstrumentation.cpp.

References llvm::annotateValueSite(), assert(), llvm::AMDGPUISD::BFI, llvm::IRBuilder< T, Inserter >::CreateCall(), llvm::createPGOFuncNameMetadata(), llvm::IRBuilder< T, Inserter >::CreateZExt(), llvm::IRBuilder< T, Inserter >::CreateZExtOrTrunc(), llvm::dbgs(), DisableValueProfiling, llvm::DS_Warning, E, F(), llvm::ConstantExpr::getBitCast(), llvm::SelectInst::getCondition(), llvm::Intrinsic::getDeclaration(), llvm::IRBuilderBase::getInt32(), llvm::IRBuilderBase::getInt64(), llvm::IRBuilderBase::getInt64Ty(), llvm::IRBuilderBase::getInt8PtrTy(), llvm::MemIntrinsicBase< Derived >::getLength(), llvm::Instruction::getParent(), llvm::Value::getType(), I, llvm::Intrinsic::instrprof_increment_step, llvm::Intrinsic::instrprof_value_profile, llvm::Type::isVectorTy(), Kind, LLVM_DEBUG, llvm_unreachable, llvm::max(), MaxNumAnnotations, MaxNumMemOPAnnotations, MI, Mode, PGOInstrMemOP, PGOInstrSelect, llvm::pred_begin(), llvm::pred_end(), llvm::setIrrLoopHeaderMetadata(), llvm::setProfMetadata(), and SI.

STATISTIC() [1/10]

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

STATISTIC() [2/10]

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

STATISTIC() [3/10]

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

STATISTIC() [4/10]

STATISTIC	(	NumOfPGOEdge	,
		"Number of edges."
	)

STATISTIC() [5/10]

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

STATISTIC() [6/10]

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

STATISTIC() [7/10]

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

STATISTIC() [8/10]

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

STATISTIC() [9/10]

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

STATISTIC() [10/10]

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

sumEdgeCount()

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

static

Definition at line 839 of file PGOInstrumentation.cpp.

References assert(), llvm::AMDGPUISD::BFI, F(), llvm::IndexedInstrProfReader::getInstrProfRecord(), llvm::handleAllErrors(), I, Kind, llvm_unreachable, llvm::BranchProbability::scale(), setBranchWeights(), and llvm::Expected< T >::takeError().

Variable Documentation

DisableValueProfiling

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

static

Referenced by instrumentOneFunc(), and isIndirectBrTarget().

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"))

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"))

static

Referenced by llvm::setProfMetadata().

false

pgo instr Read PGO instrumentation false

Definition at line 435 of file PGOInstrumentation.cpp.

gen

pgo instr gen

Definition at line 435 of file PGOInstrumentation.cpp.

instrumentation

pgo instr PGO instrumentation

Definition at line 435 of file PGOInstrumentation.cpp.

MaxNumAnnotations

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

static

Referenced by isIndirectBrTarget().

MaxNumMemOPAnnotations

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

static

Referenced by isIndirectBrTarget().

NoPGOWarnMismatch

cl::opt<bool> 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

NoPGOWarnMismatchComdat

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

static

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."))

static

Referenced by isIndirectBrTarget().

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. "))

static

Referenced by isIndirectBrTarget().

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."))

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."))

static

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

PGOViewCounts

cl::opt<PGOViewCountsType> PGOViewCounts

Referenced by annotateAllFunctions(), and llvm::getGVDT().

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.")))

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."))

static

profile

pgo instr Read PGO instrumentation profile

Definition at line 448 of file PGOInstrumentation.cpp.

use

pgo instr use

Definition at line 448 of file PGOInstrumentation.cpp.

Referenced by llvm::GEPOperator::countNonConstantIndices(), llvm::CodeExtractor::findInputsOutputs(), and llvm::HexagonSubtarget::getHexagonArchVersion().

ViewBlockFreqFuncName

cl::opt<std::string> ViewBlockFreqFuncName

Referenced by annotateAllFunctions(), and llvm::BlockFrequencyInfo::calculate().