44     GlobalVariable *Head;  member in __anon4f10565f0111::ShadowStackGC
186 ShadowStackGC::ShadowStackGC() : Head(0), StackEntryTy(0) {  in ShadowStackGC()
288   Head = M.getGlobalVariable("llvm_gc_root_chain");  in initializeCustomLowering()
289   if (!Head) {  in initializeCustomLowering()
292     Head = new GlobalVariable(M, StackEntryPtrTy, false,  in initializeCustomLowering()
296   } else if (Head->hasExternalLinkage() && Head->isDeclaration()) {  in initializeCustomLowering()
297     Head->setInitializer(Constant::getNullValue(StackEntryPtrTy));  in initializeCustomLowering()
298     Head->setLinkage(GlobalValue::LinkOnceAnyLinkage);  in initializeCustomLowering()
389   Instruction *CurrentHead  = AtEntry.CreateLoad(Head, "gc_currhead");  in performCustomLowering()
418   AtEntry.CreateStore(NewHeadVal, Head);  in performCustomLowering()
428                        AtExit->CreateStore(SavedHead, Head);  in performCustomLowering()