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f3e27d90ff
heap allocations it makes, and switch swift_alloc over to pass that pointer in as well as the alignment. Also, compute whether a type is POD during its generation and cache that in the object, and introduce a method on TypeInfo to destroy an object in memory. Swift SVN r1356
62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
//===--- GenMeta.cpp - IR generation for metadata constructs --------------===//
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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 implements IR generation for metadata constructs like
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// metatypes and modules. These is presently always trivial, but in
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// the future we will likely have some sort of physical
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// representation for at least some metatypes.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/AST/Types.h"
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#include "llvm/DerivedTypes.h"
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#include "Address.h"
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#include "GenType.h"
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#include "IRGenModule.h"
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#include "GenMeta.h"
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using namespace swift;
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using namespace irgen;
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namespace {
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struct EmptyTypeInfo : TypeInfo {
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EmptyTypeInfo(llvm::Type *ty)
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: TypeInfo(ty, Size(0), Alignment(1), IsPOD) {}
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unsigned getExplosionSize(ExplosionKind kind) const { return 0; }
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void getSchema(ExplosionSchema &schema) const {}
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void load(IRGenFunction &IGF, Address addr, Explosion &e) const {}
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void assign(IRGenFunction &IGF, Explosion &e, Address addr) const {}
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void initialize(IRGenFunction &IGF, Explosion &e, Address addr) const {}
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void reexplode(IRGenFunction &IGF, Explosion &src, Explosion &dest) const {}
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void manage(IRGenFunction &IGF, Explosion &src, Explosion &dest) const {}
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void destroy(IRGenFunction &IGF, Address addr) const {}
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};
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}
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const TypeInfo *
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TypeConverter::convertMetaTypeType(IRGenModule &IGM, MetaTypeType *T) {
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return new EmptyTypeInfo(IGM.Int8Ty);
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}
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const TypeInfo *
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TypeConverter::convertModuleType(IRGenModule &IGM, ModuleType *T) {
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return new EmptyTypeInfo(IGM.Int8Ty);
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}
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/// Emit a reference to a metatype.
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void swift::irgen::emitMetaTypeRef(IRGenFunction &IGF, Type type,
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Explosion &explosion) {
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// For now, all metatype types are empty.
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}
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