ModuleSummaryAnalysis.cpp File Reference

#include "llvm/Analysis/ModuleSummaryAnalysis.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Analysis/BlockFrequencyInfo.h"
#include "llvm/Analysis/BranchProbabilityInfo.h"
#include "llvm/Analysis/IndirectCallPromotionAnalysis.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/MemoryProfileInfo.h"
#include "llvm/Analysis/ProfileSummaryInfo.h"
#include "llvm/Analysis/StackSafetyAnalysis.h"
#include "llvm/Analysis/TypeMetadataUtils.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Constant.h"
#include "llvm/IR/Constants.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/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/ModuleSummaryIndex.h"
#include "llvm/IR/Use.h"
#include "llvm/IR/User.h"
#include "llvm/InitializePasses.h"
#include "llvm/Object/ModuleSymbolTable.h"
#include "llvm/Object/SymbolicFile.h"
#include "llvm/Pass.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <vector>

Go to the source code of this file.

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

Macros
#define	DEBUG_TYPE   "module-summary-analysis"

Functions
static bool	findRefEdges (ModuleSummaryIndex &Index, const User *CurUser, SetVector< ValueInfo, std::vector< ValueInfo > > &RefEdges, SmallPtrSet< const User *, 8 > &Visited)
static CalleeInfo::HotnessType	getHotness (uint64_t ProfileCount, ProfileSummaryInfo *PSI)
static bool	isNonRenamableLocal (const GlobalValue &GV)
static void	addVCallToSet (DevirtCallSite Call, GlobalValue::GUID Guid, SetVector< FunctionSummary::VFuncId, std::vector< FunctionSummary::VFuncId > > &VCalls, SetVector< FunctionSummary::ConstVCall, std::vector< FunctionSummary::ConstVCall > > &ConstVCalls)
	Determine whether this call has all constant integer arguments (excluding "this") and summarize it to VCalls or ConstVCalls as appropriate.
static void	addIntrinsicToSummary (const CallInst *CI, SetVector< GlobalValue::GUID, std::vector< GlobalValue::GUID > > &TypeTests, SetVector< FunctionSummary::VFuncId, std::vector< FunctionSummary::VFuncId > > &TypeTestAssumeVCalls, SetVector< FunctionSummary::VFuncId, std::vector< FunctionSummary::VFuncId > > &TypeCheckedLoadVCalls, SetVector< FunctionSummary::ConstVCall, std::vector< FunctionSummary::ConstVCall > > &TypeTestAssumeConstVCalls, SetVector< FunctionSummary::ConstVCall, std::vector< FunctionSummary::ConstVCall > > &TypeCheckedLoadConstVCalls, DominatorTree &DT)
	If this intrinsic call requires that we add information to the function summary, do so via the non-constant reference arguments.
static bool	isNonVolatileLoad (const Instruction *I)
static bool	isNonVolatileStore (const Instruction *I)
static bool	mustBeUnreachableFunction (const Function &F)
static void	computeFunctionSummary (ModuleSummaryIndex &Index, const Module &M, const Function &F, BlockFrequencyInfo *BFI, ProfileSummaryInfo *PSI, DominatorTree &DT, bool HasLocalsInUsedOrAsm, DenseSet< GlobalValue::GUID > &CantBePromoted, bool IsThinLTO, std::function< const StackSafetyInfo *(const Function &F)> GetSSICallback)
static void	findFuncPointers (const Constant *I, uint64_t StartingOffset, const Module &M, ModuleSummaryIndex &Index, VTableFuncList &VTableFuncs)
	Find function pointers referenced within the given vtable initializer (or subset of an initializer) I.
static void	computeVTableFuncs (ModuleSummaryIndex &Index, const GlobalVariable &V, const Module &M, VTableFuncList &VTableFuncs)
static void	recordTypeIdCompatibleVtableReferences (ModuleSummaryIndex &Index, const GlobalVariable &V, SmallVectorImpl< MDNode * > &Types)
	Record vtable definition V for each type metadata it references.
static void	computeVariableSummary (ModuleSummaryIndex &Index, const GlobalVariable &V, DenseSet< GlobalValue::GUID > &CantBePromoted, const Module &M, SmallVectorImpl< MDNode * > &Types)
static void	computeAliasSummary (ModuleSummaryIndex &Index, const GlobalAlias &A, DenseSet< GlobalValue::GUID > &CantBePromoted)
static void	setLiveRoot (ModuleSummaryIndex &Index, StringRef Name)
	INITIALIZE_PASS_BEGIN (ModuleSummaryIndexWrapperPass, "module-summary-analysis", "Module Summary Analysis", false, true) INITIALIZE_PASS_END(ModuleSummaryIndexWrapperPass
	INITIALIZE_PASS (ImmutableModuleSummaryIndexWrapperPass, "module-summary-info", "Module summary info", false, true) bool llvm

Variables
FunctionSummary::ForceSummaryHotnessType	llvm::ForceSummaryEdgesCold
static cl::opt< FunctionSummary::ForceSummaryHotnessType, true >	FSEC ("force-summary-edges-cold", cl::Hidden, cl::location(ForceSummaryEdgesCold), cl::desc("Force all edges in the function summary to cold"), cl::values(clEnumValN(FunctionSummary::FSHT_None, "none", "None."), clEnumValN(FunctionSummary::FSHT_AllNonCritical, "all-non-critical", "All non-critical edges."), clEnumValN(FunctionSummary::FSHT_All, "all", "All edges.")))
static cl::opt< std::string >	ModuleSummaryDotFile ("module-summary-dot-file", cl::Hidden, cl::value_desc("filename"), cl::desc("File to emit dot graph of new summary into"))
cl::opt< bool >	ScalePartialSampleProfileWorkingSetSize
module summary	analysis
module summary Module Summary	Analysis
module summary Module Summary	false

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "module-summary-analysis"

Definition at line 62 of file ModuleSummaryAnalysis.cpp.

Function Documentation

addIntrinsicToSummary()

static void addIntrinsicToSummary ( const CallInst *  CI, SetVector< GlobalValue::GUID, std::vector< GlobalValue::GUID > > &  TypeTests, SetVector< FunctionSummary::VFuncId, std::vector< FunctionSummary::VFuncId > > &  TypeTestAssumeVCalls, SetVector< FunctionSummary::VFuncId, std::vector< FunctionSummary::VFuncId > > &  TypeCheckedLoadVCalls, SetVector< FunctionSummary::ConstVCall, std::vector< FunctionSummary::ConstVCall > > &  TypeTestAssumeConstVCalls, SetVector< FunctionSummary::ConstVCall, std::vector< FunctionSummary::ConstVCall > > &  TypeCheckedLoadConstVCalls, DominatorTree &  DT  )

static

If this intrinsic call requires that we add information to the function summary, do so via the non-constant reference arguments.

Definition at line 168 of file ModuleSummaryAnalysis.cpp.

References addVCallToSet(), llvm::any_of(), llvm::findDevirtualizableCallsForTypeCheckedLoad(), llvm::findDevirtualizableCallsForTypeTest(), llvm::CallBase::getArgOperand(), llvm::CallBase::getCalledFunction(), llvm::GlobalValue::getGUID(), llvm::Function::getIntrinsicID(), and llvm::Value::uses().

Referenced by computeFunctionSummary().

addVCallToSet()

static void addVCallToSet ( DevirtCallSite  Call, GlobalValue::GUID  Guid, SetVector< FunctionSummary::VFuncId, std::vector< FunctionSummary::VFuncId > > &  VCalls, SetVector< FunctionSummary::ConstVCall, std::vector< FunctionSummary::ConstVCall > > &  ConstVCalls  )

static

Determine whether this call has all constant integer arguments (excluding "this") and summarize it to VCalls or ConstVCalls as appropriate.

Definition at line 147 of file ModuleSummaryAnalysis.cpp.

References llvm::drop_begin().

Referenced by addIntrinsicToSummary().

computeAliasSummary()

static void computeAliasSummary ( ModuleSummaryIndex &  Index, const GlobalAlias &  A, DenseSet< GlobalValue::GUID > &  CantBePromoted  )

static

Definition at line 778 of file ModuleSummaryAnalysis.cpp.

References A, assert(), llvm::GlobalValue::getGUID(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::insert(), and isNonRenamableLocal().

Referenced by llvm::buildModuleSummaryIndex().

computeFunctionSummary()

static void computeFunctionSummary ( ModuleSummaryIndex &  Index, const Module &  M, const Function &  F, BlockFrequencyInfo *  BFI, ProfileSummaryInfo *  PSI, DominatorTree &  DT, bool  HasLocalsInUsedOrAsm, DenseSet< GlobalValue::GUID > &  CantBePromoted, bool  IsThinLTO, std::function< const StackSafetyInfo *(const Function &F)>  GetSSICallback  )

static

Definition at line 266 of file ModuleSummaryAnalysis.cpp.

References addIntrinsicToSummary(), assert(), llvm::SmallVectorTemplateCommon< T, typename >::back(), llvm::memprof::CallStack< NodeT, IteratorT >::beginAfterSharedPrefix(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::count(), llvm::SmallVectorBase< Size_T >::empty(), llvm::memprof::CallStack< NodeT, IteratorT >::empty(), llvm::memprof::CallStack< NodeT, IteratorT >::end(), F, findRefEdges(), llvm::ForceSummaryEdgesCold, llvm::FunctionSummary::FSHT_All, llvm::FunctionSummary::FSHT_None, llvm::BlockAddress::get(), getHotness(), llvm::memprof::getMIBAllocType(), llvm::memprof::getMIBStackNode(), llvm::ProfileSummaryInfo::getProfileCount(), llvm::ICallPromotionAnalysis::getPromotionCandidatesForInstruction(), llvm::ProfileSummaryInfo::hasPartialSampleProfile(), I, llvm::SetVector< T, Vector, Set, N >::insert(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::insert(), llvm::SmallPtrSetImpl< PtrType >::insert(), isNonRenamableLocal(), isNonVolatileLoad(), isNonVolatileStore(), llvm::mayHaveMemprofSummary(), mustBeUnreachableFunction(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SetVector< T, Vector, Set, N >::remove(), ScalePartialSampleProfileWorkingSetSize, llvm::SetVector< T, Vector, Set, N >::size(), llvm::MapVector< KeyT, ValueT, MapType, VectorType >::takeVector(), llvm::SetVector< T, Vector, Set, N >::takeVector(), and users.

Referenced by llvm::buildModuleSummaryIndex().

computeVariableSummary()

static void computeVariableSummary ( ModuleSummaryIndex &  Index, const GlobalVariable &  V, DenseSet< GlobalValue::GUID > &  CantBePromoted, const Module &  M, SmallVectorImpl< MDNode * > &  Types  )

static

Definition at line 731 of file ModuleSummaryAnalysis.cpp.

References computeVTableFuncs(), findRefEdges(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::insert(), isNonRenamableLocal(), recordTypeIdCompatibleVtableReferences(), and llvm::SetVector< T, Vector, Set, N >::takeVector().

Referenced by llvm::buildModuleSummaryIndex().

computeVTableFuncs()

static void computeVTableFuncs ( ModuleSummaryIndex &  Index, const GlobalVariable &  V, const Module &  M, VTableFuncList &  VTableFuncs  )

static

Definition at line 690 of file ModuleSummaryAnalysis.cpp.

References assert(), findFuncPointers(), and P.

Referenced by computeVariableSummary().

findFuncPointers()

static void findFuncPointers ( const Constant *  I, uint64_t  StartingOffset, const Module &  M, ModuleSummaryIndex &  Index, VTableFuncList &  VTableFuncs  )

static

Find function pointers referenced within the given vtable initializer (or subset of an initializer) I.

The starting offset of I within the vtable initializer is StartingOffset. Any discovered function pointers are added to VTableFuncs along with their cumulative offset within the initializer.

Definition at line 646 of file ModuleSummaryAnalysis.cpp.

References A, assert(), llvm::CallingConv::C, DL, llvm::StructType::elements(), llvm::enumerate(), findFuncPointers(), llvm::StructLayout::getElementContainingOffset(), llvm::StructLayout::getElementOffset(), I, and llvm::Offset.

Referenced by computeVTableFuncs(), and findFuncPointers().

findRefEdges()

static bool findRefEdges ( ModuleSummaryIndex &  Index, const User *  CurUser, SetVector< ValueInfo, std::vector< ValueInfo > > &  RefEdges, SmallPtrSet< const User *, 8 > &  Visited  )

static

Definition at line 95 of file ModuleSummaryAnalysis.cpp.

References llvm::SmallVectorBase< Size_T >::empty(), llvm::SmallPtrSetImpl< PtrType >::insert(), llvm::SmallVectorImpl< T >::pop_back_val(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by computeFunctionSummary(), and computeVariableSummary().

getHotness()

static CalleeInfo::HotnessType getHotness ( uint64_t  ProfileCount, ProfileSummaryInfo *  PSI  )

static

Definition at line 130 of file ModuleSummaryAnalysis.cpp.

References llvm::ProfileSummaryInfo::isColdCount(), and llvm::ProfileSummaryInfo::isHotCount().

Referenced by computeFunctionSummary().

INITIALIZE_PASS()

INITIALIZE_PASS	(	ImmutableModuleSummaryIndexWrapperPass	,
		"module-summary-info"	,
		"Module summary info"	,
		false	,
		true
	)

Definition at line 1108 of file ModuleSummaryAnalysis.cpp.

References assert().

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	ModuleSummaryIndexWrapperPass	,
		"module-summary-analysis"	,
		"Module Summary Analysis"	,
		false	,
		true
	)

isNonRenamableLocal()

static bool isNonRenamableLocal ( const GlobalValue &  GV )

static

Definition at line 141 of file ModuleSummaryAnalysis.cpp.

References llvm::GlobalValue::hasLocalLinkage(), and llvm::GlobalValue::hasSection().

Referenced by computeAliasSummary(), computeFunctionSummary(), and computeVariableSummary().

isNonVolatileLoad()

static bool isNonVolatileLoad ( const Instruction *  I )

static

Definition at line 240 of file ModuleSummaryAnalysis.cpp.

References I.

Referenced by computeFunctionSummary().

isNonVolatileStore()

static bool isNonVolatileStore ( const Instruction *  I )

static

Definition at line 247 of file ModuleSummaryAnalysis.cpp.

References I.

Referenced by computeFunctionSummary().

mustBeUnreachableFunction()

static bool mustBeUnreachableFunction ( const Function &  F )

static

Definition at line 259 of file ModuleSummaryAnalysis.cpp.

References assert(), and F.

Referenced by computeFunctionSummary().

recordTypeIdCompatibleVtableReferences()

static void recordTypeIdCompatibleVtableReferences ( ModuleSummaryIndex &  Index, const GlobalVariable &  V, SmallVectorImpl< MDNode * > &  Types  )

static

Record vtable definition V for each type metadata it references.

Definition at line 714 of file ModuleSummaryAnalysis.cpp.

References llvm::Offset.

Referenced by computeVariableSummary().

setLiveRoot()

static void setLiveRoot ( ModuleSummaryIndex &  Index, StringRef  Name  )

static

Definition at line 801 of file ModuleSummaryAnalysis.cpp.

References llvm::GlobalValue::getGUID(), and Name.

Referenced by llvm::buildModuleSummaryIndex().

Variable Documentation

analysis

module summary analysis

Definition at line 1045 of file ModuleSummaryAnalysis.cpp.

Analysis

module summary Module Summary Analysis

Definition at line 1046 of file ModuleSummaryAnalysis.cpp.

false

module summary Module Summary false

Definition at line 1046 of file ModuleSummaryAnalysis.cpp.

FSEC

cl::opt< FunctionSummary::ForceSummaryHotnessType, true > FSEC("force-summary-edges-cold", cl::Hidden, cl::location(ForceSummaryEdgesCold), cl::desc("Force all edges in the function summary to cold"), cl::values(clEnumValN(FunctionSummary::FSHT_None, "none", "None."), clEnumValN(FunctionSummary::FSHT_AllNonCritical, "all-non-critical", "All non-critical edges."), clEnumValN(FunctionSummary::FSHT_All, "all", "All edges."))) ( "force-summary-edges-cold"  , cl::Hidden  , cl::location(ForceSummaryEdgesCold)  , cl::desc("Force all edges in the function summary to cold")  , cl::values(clEnumValN(FunctionSummary::FSHT_None, "none", "None."), clEnumValN(FunctionSummary::FSHT_AllNonCritical, "all-non-critical", "All non-critical edges."), clEnumValN(FunctionSummary::FSHT_All, "all", "All edges."))    )

static

ModuleSummaryDotFile

cl::opt< std::string > ModuleSummaryDotFile("module-summary-dot-file", cl::Hidden, cl::value_desc("filename"), cl::desc("File to emit dot graph of new summary into")) ( "module-summary-dot-file"  , cl::Hidden  , cl::value_desc("filename")  , cl::desc("File to emit dot graph of new summary into")    )

static

Referenced by llvm::buildModuleSummaryIndex().

ScalePartialSampleProfileWorkingSetSize

cl::opt<bool> ScalePartialSampleProfileWorkingSetSize

extern

Referenced by computeFunctionSummary().