DITypeIdentifierMap
llvm::generateDITypeIdentifierMap(const NamedMDNode *CU_Nodes) {
DITypeIdentifierMap Map;
for (unsigned CUi = 0, CUe = CU_Nodes->getNumOperands(); CUi != CUe; ++CUi) {
DICompileUnit CU = cast<MDCompileUnit>(CU_Nodes->getOperand(CUi));
DIArray Retain = CU.getRetainedTypes();
for (unsigned Ti = 0, Te = Retain.size(); Ti != Te; ++Ti) {
if (!isa<MDCompositeType>(Retain[Ti]))
continue;
DICompositeType Ty = cast<MDCompositeType>(Retain[Ti]);
if (MDString *TypeId = Ty.getIdentifier()) {
// Definition has priority over declaration.
// Try to insert (TypeId, Ty) to Map.
std::pair<DITypeIdentifierMap::iterator, bool> P =
Map.insert(std::make_pair(TypeId, Ty));
// If TypeId already exists in Map and this is a definition, replace
// whatever we had (declaration or definition) with the definition.
if (!P.second && !Ty.isForwardDecl())
P.first->second = Ty;
}
}
}
return Map;
}
