89   bool optimizeRetainCall(Function &F, Instruction *Retain);
123 bool ObjCARCContract::optimizeRetainCall(Function &F, Instruction *Retain) {  in optimizeRetainCall()  argument
124   const auto *Call = dyn_cast<CallBase>(GetArgRCIdentityRoot(Retain));  in optimizeRetainCall()
127   if (Call->getParent() != Retain->getParent())  in optimizeRetainCall()
130   // Check that the call is next to the retain.  in optimizeRetainCall()
134   if (&*I != Retain)  in optimizeRetainCall()
145              << *Retain << "\n");  in optimizeRetainCall()
148   // retain/retainRV have the same properties.  in optimizeRetainCall()
150   cast<CallInst>(Retain)->setCalledFunction(Decl);  in optimizeRetainCall()
152   LLVM_DEBUG(dbgs() << "New: " << *Retain << "\n");  in optimizeRetainCall()
156 /// Merge an autorelease with a retain into a fused call.
161   // Check that there are no instructions between the retain and the autorelease  in contractAutorelease()
166   auto *Retain = dyn_cast_or_null<CallInst>(  in contractAutorelease()  local
169   if (!Retain || GetBasicARCInstKind(Retain) != ARCInstKind::Retain ||  in contractAutorelease()
170       GetArgRCIdentityRoot(Retain) != Arg)  in contractAutorelease()
176   LLVM_DEBUG(dbgs() << "    Fusing retain/autorelease!\n"  in contractAutorelease()
180                        "        Retain: "  in contractAutorelease()
181                     << *Retain << "\n");  in contractAutorelease()
186   Retain->setCalledFunction(Decl);  in contractAutorelease()
188   LLVM_DEBUG(dbgs() << "        New RetainAutorelease: " << *Retain << "\n");  in contractAutorelease()
243     // If Inst is a retain, we don't care about it as it doesn't prevent moving  in findSafeStoreForStoreStrongContraction()
287   // Walk up from the Store to find the retain.  in findRetainForStoreStrongContraction()
290   while (I != Begin && GetBasicARCInstKind(&*I) != ARCInstKind::Retain) {  in findRetainForStoreStrongContraction()
293     // It is only safe to move the retain to the store if we can prove  in findRetainForStoreStrongContraction()
295     // counts in between the retain and the store.  in findRetainForStoreStrongContraction()
300   Instruction *Retain = &*I;  in findRetainForStoreStrongContraction()  local
301   if (GetBasicARCInstKind(Retain) != ARCInstKind::Retain)  in findRetainForStoreStrongContraction()
303   if (GetArgRCIdentityRoot(Retain) != New)  in findRetainForStoreStrongContraction()
305   return Retain;  in findRetainForStoreStrongContraction()
331 ///     optimization it must be safe to move the retain, load, and release to
359   // Then walk up the BB and look for a retain on New without any intervening  in tryToContractReleaseIntoStoreStrong()
361   Instruction *Retain =  in tryToContractReleaseIntoStoreStrong()  local
365   if (!Retain)  in tryToContractReleaseIntoStoreStrong()
372       llvm::dbgs() << "    Contracting retain, release into objc_storeStrong.\n"  in tryToContractReleaseIntoStoreStrong()
376                    << "            Retain:  " << *Retain << "\n"  in tryToContractReleaseIntoStoreStrong()
402   if (&*Iter == Retain) ++Iter;  in tryToContractReleaseIntoStoreStrong()
406   EraseInstruction(Retain);  in tryToContractReleaseIntoStoreStrong()
425   case ARCInstKind::Retain:  in tryToPeepholeInstruction()