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6a020f8f15
The main point of this change is to make sure that a shared function always has a body: both, in the optimizer pipeline and in the swiftmodule file. This is important because the compiler always needs to emit code for a shared function. Shared functions cannot be referenced from outside the module. In several corner cases we missed to maintain this invariant which resulted in unresolved-symbol linker errors. As side-effect of this change we can drop the shared_external SIL linkage and the IsSerializable flag, which simplifies the serialization and linkage concept.
119 lines
4.1 KiB
C++
119 lines
4.1 KiB
C++
//===--- SerializedSILLoader.h - Handle SIL section in modules --*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_SERIALIZATION_SILLOADER_H
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#define SWIFT_SERIALIZATION_SILLOADER_H
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#include "swift/AST/AutoDiff.h"
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#include "swift/AST/Decl.h"
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#include "swift/AST/Identifier.h"
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#include "swift/SIL/Notifications.h"
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#include "swift/SIL/SILDeclRef.h"
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#include "swift/SIL/SILLinkage.h"
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#include <memory>
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#include <vector>
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namespace swift {
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class ASTContext;
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class FileUnit;
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class ModuleDecl;
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class SILDeserializer;
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class SILFunction;
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class SILGlobalVariable;
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class SILProperty;
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class SILModule;
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class SILVTable;
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class SILWitnessTable;
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class SILDefaultWitnessTable;
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class SILDifferentiabilityWitness;
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/// Maintains a list of SILDeserializer, one for each serialized modules
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/// in ASTContext. It provides lookupSILFunction that will perform lookup
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/// on each SILDeserializer.
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class SerializedSILLoader {
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private:
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std::vector<std::unique_ptr<SILDeserializer>> LoadedSILSections;
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explicit SerializedSILLoader(
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ASTContext &ctx, SILModule *SILMod,
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DeserializationNotificationHandlerSet *callbacks);
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public:
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/// Create a new loader.
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///
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/// \param callbacks - not owned by the loader
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static std::unique_ptr<SerializedSILLoader>
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create(ASTContext &ctx, SILModule *SILMod,
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DeserializationNotificationHandlerSet *callbacks) {
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return std::unique_ptr<SerializedSILLoader>(
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new SerializedSILLoader(ctx, SILMod, callbacks));
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}
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~SerializedSILLoader();
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SILFunction *lookupSILFunction(SILFunction *Callee, bool onlyUpdateLinkage);
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SILFunction *lookupSILFunction(StringRef Name, Optional<SILLinkage> linkage);
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bool hasSILFunction(StringRef Name, Optional<SILLinkage> linkage = None);
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SILVTable *lookupVTable(const ClassDecl *C);
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SILWitnessTable *lookupWitnessTable(SILWitnessTable *C);
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SILDefaultWitnessTable *lookupDefaultWitnessTable(SILDefaultWitnessTable *C);
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SILDifferentiabilityWitness *
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lookupDifferentiabilityWitness(SILDifferentiabilityWitnessKey key);
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/// Invalidate the cached entries for deserialized state. Must be
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/// called when erasing deserialized state in the SILModule.
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void invalidateAllCaches();
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bool invalidateFunction(SILFunction *f);
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bool invalidateGlobalVariable(SILGlobalVariable *gv);
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bool invalidateVTable(SILVTable *vt);
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bool invalidateWitnessTable(SILWitnessTable *wt);
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bool invalidateDefaultWitnessTable(SILDefaultWitnessTable *wt);
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bool invalidateProperty(SILProperty *p);
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bool invalidateDifferentiabilityWitness(SILDifferentiabilityWitness *w);
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/// Deserialize all SILFunctions, VTables, and WitnessTables for
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/// a given Module.
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///
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/// If PrimaryFile is nullptr, all definitions are brought in with
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/// definition linkage.
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///
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/// Otherwise, definitions not in the primary file are brought in
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/// with external linkage.
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void getAllForModule(Identifier Mod, FileUnit *PrimaryFile);
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/// Deserialize all SILFunctions in all SILModules.
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void getAllSILFunctions();
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/// Deserialize all VTables in all SILModules.
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void getAllVTables();
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/// Deserialize all WitnessTables in all SILModules.
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void getAllWitnessTables();
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/// Deserialize all DefaultWitnessTables in all SILModules.
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void getAllDefaultWitnessTables();
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/// Deserialize all Properties in all SILModules.
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void getAllProperties();
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/// Deserialize all DifferentiabilityWitnesses in all SILModules.
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void getAllDifferentiabilityWitnesses();
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SerializedSILLoader(const SerializedSILLoader &) = delete;
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SerializedSILLoader(SerializedSILLoader &&) = delete;
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SerializedSILLoader &operator=(const SerializedSILLoader &) = delete;
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SerializedSILLoader &operator=(SerializedSILLoader &&) = delete;
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};
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} // end namespace swift
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#endif
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