1 //===- GCStrategy.cpp - Garbage Collector Description ---------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements the policy object GCStrategy which describes the 10 // behavior of a given garbage collector. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/IR/GCStrategy.h" 15 16 using namespace llvm; 17 18 LLVM_INSTANTIATE_REGISTRY(GCRegistry) 19 20 GCStrategy::GCStrategy() = default; 21 22 std::unique_ptr<GCStrategy> llvm::getGCStrategy(const StringRef Name) { 23 for (auto &S : GCRegistry::entries()) 24 if (S.getName() == Name) 25 return S.instantiate(); 26 27 if (GCRegistry::begin() == GCRegistry::end()) { 28 // In normal operation, the registry should not be empty. There should 29 // be the builtin GCs if nothing else. The most likely scenario here is 30 // that we got here without running the initializers used by the Registry 31 // itself and it's registration mechanism. 32 const std::string error = 33 std::string("unsupported GC: ") + Name.str() + 34 " (did you remember to link and initialize the library?)"; 35 report_fatal_error(error); 36 } else 37 report_fatal_error(std::string("unsupported GC: ") + Name.str()); 38 } 39