The function importer is automatically importing function from other modules based on the provided summary informations. More...

#include "llvm/Transforms/IPO/FunctionImport.h"

Classes
struct	ImportFailureInfo
	Information optionally tracked for candidates the importer decided not to import. More...

class	ImportIDTable

class	ImportListsTy

class	ImportMapTy
	The map maintains the list of imports. More...

class	SortedImportList

Public Types
enum class	ImportFailureReason { None , GlobalVar , NotLive , TooLarge , InterposableLinkage , LocalLinkageNotInModule , NotEligible , NoInline }
	The different reasons selectCallee will chose not to import a candidate. More...

using	ImportThresholdsTy = DenseMap< GlobalValue::GUID, std::tuple< unsigned, const GlobalValueSummary *, std::unique_ptr< ImportFailureInfo > > >
	Map of callee GUID considered for import into a given module to a pair consisting of the largest threshold applied when deciding whether to import it and, if we decided to import, a pointer to the summary instance imported.

using	ExportSetTy = DenseSet< ValueInfo >
	The set contains an entry for every global value that the module exports.

using	ModuleLoaderTy = std::function< Expected< std::unique_ptr< Module > >(StringRef Identifier)>
	A function of this type is used to load modules referenced by the index.

Public Member Functions
	FunctionImporter (const ModuleSummaryIndex &Index, ModuleLoaderTy ModuleLoader, bool ClearDSOLocalOnDeclarations)
	Create a Function Importer.

Expected< bool >	importFunctions (Module &M, const ImportMapTy &ImportList)
	Import functions in Module `M` based on the supplied import list.

Detailed Description

The function importer is automatically importing function from other modules based on the provided summary informations.

Definition at line 30 of file FunctionImport.h.

Member Typedef Documentation

◆ ExportSetTy

using llvm::FunctionImporter::ExportSetTy = DenseSet<ValueInfo>

The set contains an entry for every global value that the module exports.

Depending on the user context, this container is allowed to contain definitions, declarations or a mix of both.

Definition at line 302 of file FunctionImport.h.

◆ ImportThresholdsTy

using llvm::FunctionImporter::ImportThresholdsTy = DenseMap<GlobalValue::GUID, std::tuple<unsigned, const GlobalValueSummary *, std::unique_ptr<ImportFailureInfo> >>

Map of callee GUID considered for import into a given module to a pair consisting of the largest threshold applied when deciding whether to import it and, if we decided to import, a pointer to the summary instance imported.

If we decided not to import, the summary will be nullptr.

Definition at line 83 of file FunctionImport.h.

◆ ModuleLoaderTy

using llvm::FunctionImporter::ModuleLoaderTy = std::function<Expected<std::unique_ptr<Module> >(StringRef Identifier)>

A function of this type is used to load modules referenced by the index.

Definition at line 305 of file FunctionImport.h.

Member Enumeration Documentation

◆ ImportFailureReason

enum class llvm::FunctionImporter::ImportFailureReason

strong

The different reasons selectCallee will chose not to import a candidate.

Enumerator
None
GlobalVar
NotLive
TooLarge
InterposableLinkage
LocalLinkageNotInModule
NotEligible
NoInline

Definition at line 34 of file FunctionImport.h.

Constructor & Destructor Documentation

◆ FunctionImporter()

llvm::FunctionImporter::FunctionImporter	(	const ModuleSummaryIndex &	Index,
		ModuleLoaderTy	ModuleLoader,
		bool	ClearDSOLocalOnDeclarations
	)

inline

Create a Function Importer.

Definition at line 309 of file FunctionImport.h.

Member Function Documentation

◆ importFunctions()

Expected< bool > FunctionImporter::importFunctions	(	Module &	M,
		const ImportMapTy &	ImportList
	)

Import functions in Module M based on the supplied import list.

Definition at line 1818 of file FunctionImport.cpp.

References assert(), llvm::createStringError(), llvm::dbgs(), llvm::GlobalValueSummary::Definition, EnableImportMetadata, llvm::EnableMemProfContextDisambiguation, F, llvm::MDNode::get(), llvm::GlobalValue::getAliaseeObject(), llvm::SetVector< T, Vector, Set, N >::getArrayRef(), llvm::Module::getContext(), llvm::GlobalValue::getGUID(), llvm::FunctionImporter::ImportMapTy::getImportType(), llvm::Module::getModuleIdentifier(), llvm::Value::getName(), llvm::Module::getSourceFileName(), llvm::FunctionImporter::ImportMapTy::getSourceModules(), llvm::SetVector< T, Vector, Set, N >::insert(), internalizeGVsAfterImport(), llvm::invalid_argument, LLVM_DEBUG, llvm::GlobalValue::materialize(), llvm::IRMover::move(), PrintImports, llvm::renameModuleForThinLTO(), replaceAliasWithAliasee(), llvm::SetVector< T, Vector, Set, N >::size(), llvm::Expected< T >::takeError(), llvm::toString(), and llvm::UpgradeDebugInfo().

Referenced by crossImportIntoModule(), doImportingForModuleForTest(), and llvm::lto::thinBackend().

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

include/llvm/Transforms/IPO/FunctionImport.h
lib/Transforms/IPO/FunctionImport.cpp

Classes

Public Types

Public Member Functions