llvm::FunctionImporter Class Reference

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
	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
	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.
LLVM_ABI 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 31 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 305 of file FunctionImport.h.

ImportThresholdsTy

using llvm::FunctionImporter::ImportThresholdsTy

Initial value:

 
      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 84 of file FunctionImport.h.

ModuleLoaderTy

using llvm::FunctionImporter::ModuleLoaderTy

Initial value:

 
      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 308 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 35 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 312 of file FunctionImport.h.

References llvm::move().

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 1873 of file FunctionImport.cpp.

References assert(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::contains(), 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(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::insert_range(), internalizeGVsAfterImport(), llvm::invalid_argument, llvm::isa(), LLVM_DEBUG, llvm::GlobalValue::materialize(), llvm::IRMover::move(), MoveSymbolGUID, 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().

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

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