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More synthesis of copy constructors. Work in progress.

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llvm-svn: 78402
This commit is contained in:
Fariborz Jahanian
2009-08-07 20:22:40 +00:00
parent a4d94b1a95
commit 40134e71be
5 changed files with 94 additions and 4 deletions
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47
clang/lib/CodeGen/CodeGenModule.cpp
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@@ -645,10 +645,8 @@ llvm::Constant *CodeGenModule::GetOrCreateLLVMFunction(const char *MangledName,
else if (const CXXConstructorDecl *CD = dyn_cast<CXXConstructorDecl>(FD)) {
const CXXRecordDecl *ClassDecl =
cast<CXXRecordDecl>(CD->getDeclContext());
if (CD->isCopyConstructor(getContext())) {
if (!ClassDecl->hasUserDeclaredCopyConstructor())
DeferredDeclsToEmit.push_back(D);
}
if (CD->isCopyConstructor(getContext()))
DeferredCopyConstructorToEmit(D);
else if (!ClassDecl->hasUserDeclaredConstructor())
DeferredDeclsToEmit.push_back(D);
}
@@ -674,6 +672,47 @@ llvm::Constant *CodeGenModule::GetOrCreateLLVMFunction(const char *MangledName,
return F;
}
/// Defer definition of copy constructor(s) which need be implicitly defined.
void CodeGenModule::DeferredCopyConstructorToEmit(GlobalDecl CopyCtorDecl) {
const CXXConstructorDecl *CD =
cast<CXXConstructorDecl>(CopyCtorDecl.getDecl());
const CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(CD->getDeclContext());
if (ClassDecl->hasTrivialCopyConstructor() ||
ClassDecl->hasUserDeclaredCopyConstructor())
return;
// First make sure all direct base classes and virtual bases and non-static
// data mebers which need to have their copy constructors implicitly defined
// are defined. 12.8.p7
for (CXXRecordDecl::base_class_const_iterator Base = ClassDecl->bases_begin();
Base != ClassDecl->bases_end(); ++Base) {
unsigned TypeQuals;
CXXRecordDecl *BaseClassDecl
= cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl());
if (CXXConstructorDecl *BaseCopyCtor =
BaseClassDecl->getCopyConstructor(Context, TypeQuals))
GetAddrOfCXXConstructor(BaseCopyCtor, Ctor_Complete);
}
for (CXXRecordDecl::field_iterator Field = ClassDecl->field_begin(),
FieldEnd = ClassDecl->field_end();
Field != FieldEnd; ++Field) {
unsigned TypeQuals;
QualType FieldType = Context.getCanonicalType((*Field)->getType());
if (const ArrayType *Array = Context.getAsArrayType(FieldType))
FieldType = Array->getElementType();
if (const RecordType *FieldClassType = FieldType->getAs<RecordType>()) {
CXXRecordDecl *FieldClassDecl
= cast<CXXRecordDecl>(FieldClassType->getDecl());
if (CXXConstructorDecl *FieldCopyCtor =
FieldClassDecl->getCopyConstructor(Context, TypeQuals))
GetAddrOfCXXConstructor(FieldCopyCtor, Ctor_Complete);
}
}
DeferredDeclsToEmit.push_back(CopyCtorDecl);
}
/// GetAddrOfFunction - Return the address of the given function. If Ty is
/// non-null, then this function will use the specified type if it has to
/// create it (this occurs when we see a definition of the function).