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Test linkage of RTTI descriptors of array types. 

llvm-svn: 92274
This commit is contained in:
Anders Carlsson 2009-12-29 21:58:32 +00:00
parent 1797fc7009
commit 0e4151c685
1 changed files with 61 additions and 29 deletions
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90
clang/lib/CodeGen/CGRTTI.cpp
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@ -367,11 +367,11 @@ public:
case Type::MemberPointer:
case Type::FunctionProto:
case Type::FunctionNoProto:
return BuildTypeInfo(Ty);
case Type::ConstantArray:
case Type::IncompleteArray:
case Type::VariableArray:
return BuildTypeInfo(Ty);
case Type::Vector:
case Type::ExtVector:
return BuildSimpleType(Ty, "_ZTVN10__cxxabiv117__array_type_infoE");
@ -598,7 +598,15 @@ static llvm::GlobalVariable::LinkageTypes getTypeInfoLinkage(QualType Ty) {
if (ContainsIncompleteClassType(Ty))
return llvm::GlobalValue::InternalLinkage;
if (const PointerType *PointerTy = dyn_cast<PointerType>(Ty)) {
switch (Ty->getTypeClass()) {
default:
// FIXME: We need to add code to handle all types.
assert(false && "Unhandled type!");
break;
case Type::Pointer: {
const PointerType *PointerTy = cast<PointerType>(Ty);
// If the pointee type has internal linkage, then the pointer type needs to
// have it as well.
if (getTypeInfoLinkage(PointerTy->getPointeeType()) ==
@ -606,9 +614,11 @@ static llvm::GlobalVariable::LinkageTypes getTypeInfoLinkage(QualType Ty) {
return llvm::GlobalVariable::InternalLinkage;
return llvm::GlobalVariable::WeakODRLinkage;
break;
}
if (const RecordType *RecordTy = dyn_cast<RecordType>(Ty)) {
case Type::Record: {
const RecordType *RecordTy = cast<RecordType>(Ty);
const CXXRecordDecl *RD = cast<CXXRecordDecl>(RecordTy->getDecl());
// If we're in an anonymous namespace, then we always want internal linkage.
@ -630,31 +640,39 @@ static llvm::GlobalVariable::LinkageTypes getTypeInfoLinkage(QualType Ty) {
return llvm::GlobalValue::ExternalLinkage;
}
if (Ty->getTypeClass() == Type::Builtin) {
case Type::Builtin:
return llvm::GlobalValue::WeakODRLinkage;
}
if (const FunctionType *FT = dyn_cast<FunctionType>(Ty)) {
if (getTypeInfoLinkage(FT->getResultType())
== llvm::GlobalValue::InternalLinkage)
case Type::FunctionProto: {
const FunctionProtoType *FPT = cast<FunctionProtoType>(Ty);
// Check the return type.
if (getTypeInfoLinkage(FPT->getResultType()) ==
llvm::GlobalValue::InternalLinkage)
return llvm::GlobalValue::InternalLinkage;
if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(Ty)) {
for (unsigned i = 0; i < FPT->getNumArgs(); ++i)
if (getTypeInfoLinkage(FPT->getArgType(i))
== llvm::GlobalValue::InternalLinkage)
return llvm::GlobalValue::InternalLinkage;
for (unsigned i = 0; i < FPT->getNumExceptions(); ++i)
if (getTypeInfoLinkage(FPT->getExceptionType(i))
== llvm::GlobalValue::InternalLinkage)
return llvm::GlobalValue::InternalLinkage;
// Check the parameter types.
for (unsigned i = 0; i != FPT->getNumArgs(); ++i) {
if (getTypeInfoLinkage(FPT->getArgType(i)) ==
llvm::GlobalValue::InternalLinkage)
return llvm::GlobalValue::InternalLinkage;
}
return llvm::GlobalValue::WeakODRLinkage;
}
case Type::ConstantArray:
case Type::IncompleteArray: {
const ArrayType *AT = cast<ArrayType>(Ty);
// Check the element type.
if (getTypeInfoLinkage(AT->getElementType()) ==
llvm::GlobalValue::InternalLinkage)
return llvm::GlobalValue::InternalLinkage;
}
}
// FIXME: We need to add code to handle all types.
assert(false && "Unhandled type!");
return llvm::GlobalValue::WeakODRLinkage;
}
@ -663,7 +681,19 @@ void RTTIBuilder::BuildVtablePointer(const Type *Ty) {
switch (Ty->getTypeClass()) {
default: assert(0 && "Unhandled type!");
case Type::ConstantArray:
case Type::IncompleteArray:
// abi::__array_type_info
VtableName = "_ZTVN10__cxxabiv117__array_type_infoE";
break;
case Type::FunctionNoProto:
case Type::FunctionProto:
// abi::__function_type_info
VtableName = "_ZTVN10__cxxabiv120__function_type_infoE";
break;
case Type::Record: {
const CXXRecordDecl *RD =
cast<CXXRecordDecl>(cast<RecordType>(Ty)->getDecl());
@ -678,15 +708,11 @@ void RTTIBuilder::BuildVtablePointer(const Type *Ty) {
// abi::__pointer_type_info
VtableName = "_ZTVN10__cxxabiv119__pointer_type_infoE";
break;
case Type::MemberPointer:
// abi::__pointer_to_member_type_info
VtableName = "_ZTVN10__cxxabiv129__pointer_to_member_type_infoE";
break;
case Type::FunctionNoProto:
case Type::FunctionProto:
// abi::__function_type_info
VtableName = "_ZTVN10__cxxabiv120__function_type_infoE";
}
llvm::Constant *Vtable =
@ -734,6 +760,12 @@ llvm::Constant *RTTIBuilder::BuildTypeInfo(QualType Ty) {
assert(false && "Builtin type info must be in the standard library!");
break;
case Type::ConstantArray:
case Type::IncompleteArray:
// Itanium C++ ABI 2.9.5p4:
// abi::__array_type_info adds no data members to std::type_info;
break;
case Type::FunctionNoProto:
case Type::FunctionProto:
// Itanium C++ ABI 2.9.5p4: