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93ed95847a
Ownership is truly a property not of a declaration, but of a function body. So it makes sense to just match what we deserialize. This also helps us to avoid mismatches if we lower ownership from a function, delete it, and then relink it. I also used this as an opportunity to clean up where we set that flag in deserialization to only happen in one place for both declarations/definitions.
121 lines
5.2 KiB
C++
121 lines
5.2 KiB
C++
//===--- SILFunctionBuilder.h ---------------------------------------------===//
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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 - 2018 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_SIL_SILFUNCTIONBUILDER_H
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#define SWIFT_SIL_SILFUNCTIONBUILDER_H
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#include "swift/AST/Availability.h"
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#include "swift/SIL/SILModule.h"
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namespace swift {
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class SILParserFunctionBuilder;
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class SILSerializationFunctionBuilder;
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class SILOptFunctionBuilder;
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namespace Lowering {
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class SILGenFunctionBuilder;
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} // namespace Lowering
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/// A class for creating SILFunctions in a specific SILModule.
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///
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/// The intention is that this class is not used directly, but rather that each
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/// part of the compiler that needs to create functions create a composition
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/// type with SILFunctionBuilder as a field. This enables subsystems that use
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/// SIL to:
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///
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/// 1. Enforce invariants in the type system. An example of this is in the
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/// SILOptimizer where we want to ensure that the pass manager properly
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/// notifies analyses whenever functions are created/destroyed.
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///
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/// 2. Have a convenient place to place utility functionality for creating
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/// functions. Today the compiler has many small utility functions for
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/// creating the underlying SILFunction that are generally quite verbose and
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/// have shared code. These SILFunctionBuilder composition types will enable
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/// code-reuse in between these different SILFunction creation sites.
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class SILFunctionBuilder {
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SILModule &mod;
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AvailabilityContext availCtx;
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friend class SILParserFunctionBuilder;
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friend class SILSerializationFunctionBuilder;
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friend class SILOptFunctionBuilder;
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friend class Lowering::SILGenFunctionBuilder;
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SILFunctionBuilder(SILModule &mod)
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: SILFunctionBuilder(mod,
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AvailabilityContext::forDeploymentTarget(
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mod.getASTContext())) {}
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SILFunctionBuilder(SILModule &mod, AvailabilityContext availCtx)
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: mod(mod), availCtx(availCtx) {}
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/// Return the declaration of a utility function that can, but needn't, be
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/// shared between different parts of a program.
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SILFunction *getOrCreateSharedFunction(SILLocation loc, StringRef name,
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CanSILFunctionType type,
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IsBare_t isBareSILFunction,
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IsTransparent_t isTransparent,
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IsSerialized_t isSerialized,
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ProfileCounter entryCount,
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IsThunk_t isThunk,
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IsDynamicallyReplaceable_t isDynamic);
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/// Return the declaration of a function, or create it if it doesn't exist.
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SILFunction *getOrCreateFunction(
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SILLocation loc, StringRef name, SILLinkage linkage,
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CanSILFunctionType type, IsBare_t isBareSILFunction,
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IsTransparent_t isTransparent, IsSerialized_t isSerialized,
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IsDynamicallyReplaceable_t isDynamic,
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ProfileCounter entryCount = ProfileCounter(),
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IsThunk_t isThunk = IsNotThunk,
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SubclassScope subclassScope = SubclassScope::NotApplicable);
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/// Return the declaration of a function, or create it if it doesn't exist.
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SILFunction *
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getOrCreateFunction(SILLocation loc, SILDeclRef constant,
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ForDefinition_t forDefinition,
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ProfileCounter entryCount = ProfileCounter());
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/// Create a function declaration.
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///
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/// This signature is a direct copy of the signature of SILFunction::create()
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/// in order to simplify refactoring all SILFunction creation use-sites to use
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/// SILFunctionBuilder. Eventually the uses should probably be refactored.
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SILFunction *
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createFunction(SILLinkage linkage, StringRef name,
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CanSILFunctionType loweredType, GenericEnvironment *genericEnv,
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Optional<SILLocation> loc, IsBare_t isBareSILFunction,
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IsTransparent_t isTrans, IsSerialized_t isSerialized,
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IsDynamicallyReplaceable_t isDynamic,
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ProfileCounter entryCount = ProfileCounter(),
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IsThunk_t isThunk = IsNotThunk,
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SubclassScope subclassScope = SubclassScope::NotApplicable,
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Inline_t inlineStrategy = InlineDefault,
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EffectsKind EK = EffectsKind::Unspecified,
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SILFunction *InsertBefore = nullptr,
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const SILDebugScope *DebugScope = nullptr);
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void addFunctionAttributes(SILFunction *F, DeclAttributes &Attrs,
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SILModule &M, SILDeclRef constant = SILDeclRef());
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/// We do not expose this to everyone, instead we allow for our users to opt
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/// into this if they need to. Please do not do this in general! We only want
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/// to use this when deserializing a function body.
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static void setHasOwnership(SILFunction *F, bool newValue) {
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F->setHasOwnership(newValue);
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}
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};
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} // namespace swift
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#endif
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