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0cb9bb50c1
We can't know whether a mixed-heritage class has a non-pointer isa, so use object_getClass to get its isa pointer. Fixes <rdar://problem/16656489>. Swift SVN r16549
99 lines
3.9 KiB
C++
99 lines
3.9 KiB
C++
//===--- GenStruct.h - Swift IR generation for classes ------------*- 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 provides the private interface to the class-emission code.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_IRGEN_GENCLASS_H
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#define SWIFT_IRGEN_GENCLASS_H
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namespace llvm {
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class Constant;
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class Value;
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class Function;
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}
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namespace swift {
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class CanType;
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class ClassDecl;
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class ExtensionDecl;
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class ProtocolDecl;
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class SILType;
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class Type;
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class VarDecl;
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namespace irgen {
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class HeapLayout;
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class IRGenFunction;
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class IRGenModule;
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class OwnedAddress;
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enum class ReferenceCounting : unsigned char;
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enum class IsaEncoding : unsigned char;
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OwnedAddress projectPhysicalClassMemberAddress(IRGenFunction &IGF,
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llvm::Value *base,
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SILType baseType,
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VarDecl *field);
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llvm::Constant *emitClassPrivateData(IRGenModule &IGM, ClassDecl *theClass);
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llvm::Constant *emitCategoryData(IRGenModule &IGM, ExtensionDecl *ext);
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llvm::Constant *emitObjCProtocolData(IRGenModule &IGM, ProtocolDecl *ext);
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/// Emit an allocation of a class.
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llvm::Value *emitClassAllocation(IRGenFunction &IGF, SILType selfType,
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bool objc);
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/// Emit an allocation of a class using a metadata value.
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llvm::Value *emitClassAllocationDynamic(IRGenFunction &IGF,
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llvm::Value *metadata,
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SILType selfType,
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bool objc);
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/// Emit class deallocation.
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void emitClassDeallocation(IRGenFunction &IGF, SILType selfType,
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llvm::Value *selfValue);
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/// Emit the constant fragile instance size of the class, or null if the class
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/// does not have fixed layout. For resilient classes this does not
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/// correspond to the runtime alignment of instances of the class.
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llvm::Constant *tryEmitClassConstantFragileInstanceSize(IRGenModule &IGM,
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ClassDecl *Class);
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/// Emit the constant fragile instance alignment mask of the class, or null if
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/// the class does not have fixed layout. For resilient classes this does not
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/// correspond to the runtime alignment of instances of the class.
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llvm::Constant *tryEmitClassConstantFragileInstanceAlignMask(IRGenModule &IGM,
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ClassDecl *Class);
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/// Emit the constant fragile byte offset for the field in the class, or null
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/// if the field does not have fixed layout. For resilient classes this does
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/// not correspond to the runtime offset of the field.
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llvm::Constant *tryEmitClassConstantFragileFieldOffset(IRGenModule &IGM,
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ClassDecl *theClass,
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VarDecl *field);
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/// True if the value is of class type, or of a type that is bridged to class
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/// type in the ObjC world.
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bool hasObjCClassRepresentation(IRGenModule &IGM, Type t);
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/// What reference counting mechanism does a class use?
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ReferenceCounting getReferenceCountingForClass(IRGenModule &IGM,
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ClassDecl *theClass);
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/// What isa-encoding mechanism does a type use?
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IsaEncoding getIsaEncodingForType(IRGenModule &IGM, CanType type);
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} // end namespace irgen
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} // end namespace swift
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#endif
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