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3f2bb26c04
OpaqueStorageTypeInfo will be adjusted to use [N x i8] storage types in the following commit. Swift SVN r24569
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
//===--- NecessaryBindings.h - Optimizing archetype bindings ----*- 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 - 2015 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 http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a utility class for saving and restoring the
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// archetype metadata necessary in order to carry out value operations
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// on a type.
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//
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// This is a supplemental API of GenProto.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_IRGEN_NECESSARYBINDINGS_H
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#define SWIFT_IRGEN_NECESSARYBINDINGS_H
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#include "llvm/ADT/SetVector.h"
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#include "swift/AST/Types.h"
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namespace swift {
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class ArchetypeType;
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namespace irgen {
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class Address;
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class IRGenFunction;
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class IRGenModule;
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class Size;
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/// NecessaryBindings - The set of metadata that must be saved in
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/// order to perform some set of operations on a type.
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class NecessaryBindings {
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llvm::SetVector<ArchetypeType*> Types;
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public:
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NecessaryBindings() = default;
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/// Collect the necessary bindings to invoke a function with the given
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/// signature.
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static NecessaryBindings forFunctionInvocations(IRGenModule &IGM,
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CanSILFunctionType origType,
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CanSILFunctionType substType,
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ArrayRef<Substitution> subs);
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/// Collect the necessary bindings to perform value operations on a type.
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static NecessaryBindings forValueOperations(IRGenModule &IGM, CanType type);
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/// Add bindings required by the given archetype.
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void addArchetype(CanArchetypeType archetype);
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/// Is the work to do trivial?
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bool empty() const { return Types.empty(); }
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/// Returns the required size of the bindings.
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/// Pointer alignment is sufficient.
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Size getBufferSize(IRGenModule &IGM) const;
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/// Save the necessary bindings to the given buffer.
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void save(IRGenFunction &IGF, Address buffer) const;
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/// Restore the necessary bindings from the given buffer.
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void restore(IRGenFunction &IGF, Address buffer) const;
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};
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} // end namespace irgen
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} // end namespace swift
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#endif
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