150                                AllocaInst *AI,  in isOnlyCopiedFromConstantMemory()  argument
153   if (isOnlyCopiedFromConstantMemory(AA, AI, TheCopy, ToDelete))  in isOnlyCopiedFromConstantMemory()
159 static bool isDereferenceableForAllocaSize(const Value *V, const AllocaInst *AI,  in isDereferenceableForAllocaSize()  argument
161   if (AI->isArrayAllocation())  in isDereferenceableForAllocaSize()
163   uint64_t AllocaSize = DL.getTypeStoreSize(AI->getAllocatedType());  in isDereferenceableForAllocaSize()
166   return isDereferenceableAndAlignedPointer(V, Align(AI->getAlignment()),  in isDereferenceableForAllocaSize()
171                                             AllocaInst &AI) {  in simplifyAllocaArraySize()  argument
173   if (!AI.isArrayAllocation()) {  in simplifyAllocaArraySize()
175     if (AI.getArraySize()->getType()->isIntegerTy(32))  in simplifyAllocaArraySize()
179     return IC.replaceOperand(AI, 0, IC.Builder.getInt32(1));  in simplifyAllocaArraySize()
183   if (const ConstantInt *C = dyn_cast<ConstantInt>(AI.getArraySize())) {  in simplifyAllocaArraySize()
185       Type *NewTy = ArrayType::get(AI.getAllocatedType(), C->getZExtValue());  in simplifyAllocaArraySize()
186       AllocaInst *New = IC.Builder.CreateAlloca(NewTy, nullptr, AI.getName());  in simplifyAllocaArraySize()
187       New->setAlignment(AI.getAlign());  in simplifyAllocaArraySize()
199       Type *IdxTy = IC.getDataLayout().getIntPtrType(AI.getType());  in simplifyAllocaArraySize()
207       if (AI.getType()->getPointerAddressSpace() !=  in simplifyAllocaArraySize()
210             CastInst::CreatePointerBitCastOrAddrSpaceCast(NewI, AI.getType());  in simplifyAllocaArraySize()
216       return IC.replaceInstUsesWith(AI, NewI);  in simplifyAllocaArraySize()
220   if (isa<UndefValue>(AI.getArraySize()))  in simplifyAllocaArraySize()
221     return IC.replaceInstUsesWith(AI, Constant::getNullValue(AI.getType()));  in simplifyAllocaArraySize()
225   Type *IntPtrTy = IC.getDataLayout().getIntPtrType(AI.getType());  in simplifyAllocaArraySize()
226   if (AI.getArraySize()->getType() != IntPtrTy) {  in simplifyAllocaArraySize()
227     Value *V = IC.Builder.CreateIntCast(AI.getArraySize(), IntPtrTy, false);  in simplifyAllocaArraySize()
228     return IC.replaceOperand(AI, 0, V);  in simplifyAllocaArraySize()
365 Instruction *InstCombinerImpl::visitAllocaInst(AllocaInst &AI) {  in visitAllocaInst()  argument
366   if (auto *I = simplifyAllocaArraySize(*this, AI))  in visitAllocaInst()
369   if (AI.getAllocatedType()->isSized()) {  in visitAllocaInst()
373     if (DL.getTypeAllocSize(AI.getAllocatedType()).getKnownMinSize() == 0) {  in visitAllocaInst()
377       if (AI.isArrayAllocation())  in visitAllocaInst()
378         return replaceOperand(AI, 0,  in visitAllocaInst()
379             ConstantInt::get(AI.getArraySize()->getType(), 1));  in visitAllocaInst()
382       BasicBlock &EntryBlock = AI.getParent()->getParent()->getEntryBlock();  in visitAllocaInst()
384       if (FirstInst != &AI) {  in visitAllocaInst()
392           AI.moveBefore(FirstInst);  in visitAllocaInst()
393           return &AI;  in visitAllocaInst()
399         const Align MaxAlign = std::max(EntryAI->getAlign(), AI.getAlign());  in visitAllocaInst()
401         if (AI.getType() != EntryAI->getType())  in visitAllocaInst()
402           return new BitCastInst(EntryAI, AI.getType());  in visitAllocaInst()
403         return replaceInstUsesWith(AI, EntryAI);  in visitAllocaInst()
415   if (MemTransferInst *Copy = isOnlyCopiedFromConstantMemory(AA, &AI, ToDelete)) {  in visitAllocaInst()
417     Align AllocaAlign = AI.getAlign();  in visitAllocaInst()
419       TheSrc, AllocaAlign, DL, &AI, &AC, &DT);  in visitAllocaInst()
421         isDereferenceableForAllocaSize(TheSrc, &AI, DL) &&  in visitAllocaInst()
425       LLVM_DEBUG(dbgs() << "Found alloca equal to global: " << AI << '\n');  in visitAllocaInst()
428       auto *DestTy = PointerType::get(AI.getAllocatedType(), SrcAddrSpace);  in visitAllocaInst()
429       if (AI.getType()->getAddressSpace() == SrcAddrSpace) {  in visitAllocaInst()
434         Instruction *NewI = replaceInstUsesWith(AI, Cast);  in visitAllocaInst()
441       if (PtrReplacer.collectUsers(AI)) {  in visitAllocaInst()
446         PtrReplacer.replacePointer(AI, Cast);  in visitAllocaInst()
454   return visitAllocSite(AI);  in visitAllocaInst()
784     if (AllocaInst *AI = dyn_cast<AllocaInst>(P)) {  in isObjectSizeLessThanOrEq()  local
785       if (!AI->getAllocatedType()->isSized())  in isObjectSizeLessThanOrEq()
788       ConstantInt *CS = dyn_cast<ConstantInt>(AI->getArraySize());  in isObjectSizeLessThanOrEq()
792       uint64_t TypeSize = DL.getTypeAllocSize(AI->getAllocatedType());  in isObjectSizeLessThanOrEq()