+
+GCStrategy *GCModuleInfo::getGCStrategy(const StringRef Name) {
+ // TODO: Arguably, just doing a linear search would be faster for small N
+ auto NMI = GCStrategyMap.find(Name);
+ if (NMI != GCStrategyMap.end())
+ return NMI->getValue();
+
+ for (auto& Entry : GCRegistry::entries()) {
+ if (Name == Entry.getName()) {
+ std::unique_ptr<GCStrategy> S = Entry.instantiate();
+ S->Name = Name;
+ GCStrategyMap[Name] = S.get();
+ GCStrategyList.push_back(std::move(S));
+ return GCStrategyList.back().get();
+ }
+ }
+
+ if (GCRegistry::begin() == GCRegistry::end()) {
+ // In normal operation, the registry should not be empty. There should
+ // be the builtin GCs if nothing else. The most likely scenario here is
+ // that we got here without running the initializers used by the Registry
+ // itself and it's registration mechanism.
+ const std::string error = ("unsupported GC: " + Name).str() +
+ " (did you remember to link and initialize the CodeGen library?)";
+ report_fatal_error(error);
+ } else
+ report_fatal_error(std::string("unsupported GC: ") + Name);
+}