163 isOnlyCopiedFromConstantGlobal(AllocaInst *AI,  in isOnlyCopiedFromConstantGlobal()  argument
166   if (isOnlyCopiedFromConstantGlobal(AI, TheCopy, ToDelete))  in isOnlyCopiedFromConstantGlobal()
172 static bool isDereferenceableForAllocaSize(const Value *V, const AllocaInst *AI,  in isDereferenceableForAllocaSize()  argument
174   if (AI->isArrayAllocation())  in isDereferenceableForAllocaSize()
176   uint64_t AllocaSize = DL.getTypeStoreSize(AI->getAllocatedType());  in isDereferenceableForAllocaSize()
179   return isDereferenceableAndAlignedPointer(V, AI->getAlignment(),  in isDereferenceableForAllocaSize()
183 static Instruction *simplifyAllocaArraySize(InstCombiner &IC, AllocaInst &AI) {  in simplifyAllocaArraySize()  argument
185   if (!AI.isArrayAllocation()) {  in simplifyAllocaArraySize()
187     if (AI.getArraySize()->getType()->isIntegerTy(32))  in simplifyAllocaArraySize()
192     AI.setOperand(0, V);  in simplifyAllocaArraySize()
193     return &AI;  in simplifyAllocaArraySize()
197   if (const ConstantInt *C = dyn_cast<ConstantInt>(AI.getArraySize())) {  in simplifyAllocaArraySize()
199       Type *NewTy = ArrayType::get(AI.getAllocatedType(), C->getZExtValue());  in simplifyAllocaArraySize()
200       AllocaInst *New = IC.Builder.CreateAlloca(NewTy, nullptr, AI.getName());  in simplifyAllocaArraySize()
201       New->setAlignment(AI.getAlignment());  in simplifyAllocaArraySize()
213       Type *IdxTy = IC.getDataLayout().getIntPtrType(AI.getType());  in simplifyAllocaArraySize()
222       return IC.replaceInstUsesWith(AI, GEP);  in simplifyAllocaArraySize()
226   if (isa<UndefValue>(AI.getArraySize()))  in simplifyAllocaArraySize()
227     return IC.replaceInstUsesWith(AI, Constant::getNullValue(AI.getType()));  in simplifyAllocaArraySize()
231   Type *IntPtrTy = IC.getDataLayout().getIntPtrType(AI.getType());  in simplifyAllocaArraySize()
232   if (AI.getArraySize()->getType() != IntPtrTy) {  in simplifyAllocaArraySize()
233     Value *V = IC.Builder.CreateIntCast(AI.getArraySize(), IntPtrTy, false);  in simplifyAllocaArraySize()
234     AI.setOperand(0, V);  in simplifyAllocaArraySize()
235     return &AI;  in simplifyAllocaArraySize()
342 Instruction *InstCombiner::visitAllocaInst(AllocaInst &AI) {  in visitAllocaInst()  argument
343   if (auto *I = simplifyAllocaArraySize(*this, AI))  in visitAllocaInst()
346   if (AI.getAllocatedType()->isSized()) {  in visitAllocaInst()
348     if (AI.getAlignment() == 0)  in visitAllocaInst()
349       AI.setAlignment(DL.getPrefTypeAlignment(AI.getAllocatedType()));  in visitAllocaInst()
354     if (DL.getTypeAllocSize(AI.getAllocatedType()) == 0) {  in visitAllocaInst()
358       if (AI.isArrayAllocation()) {  in visitAllocaInst()
359         AI.setOperand(0, ConstantInt::get(AI.getArraySize()->getType(), 1));  in visitAllocaInst()
360         return &AI;  in visitAllocaInst()
364       BasicBlock &EntryBlock = AI.getParent()->getParent()->getEntryBlock();  in visitAllocaInst()
366       if (FirstInst != &AI) {  in visitAllocaInst()
373           AI.moveBefore(FirstInst);  in visitAllocaInst()
374           return &AI;  in visitAllocaInst()
386                                      AI.getAlignment());  in visitAllocaInst()
388         if (AI.getType() != EntryAI->getType())  in visitAllocaInst()
389           return new BitCastInst(EntryAI, AI.getType());  in visitAllocaInst()
390         return replaceInstUsesWith(AI, EntryAI);  in visitAllocaInst()
395   if (AI.getAlignment()) {  in visitAllocaInst()
403     if (MemTransferInst *Copy = isOnlyCopiedFromConstantGlobal(&AI, ToDelete)) {  in visitAllocaInst()
405           Copy->getSource(), AI.getAlignment(), DL, &AI, &AC, &DT);  in visitAllocaInst()
406       if (AI.getAlignment() <= SourceAlign &&  in visitAllocaInst()
407           isDereferenceableForAllocaSize(Copy->getSource(), &AI, DL)) {  in visitAllocaInst()
408         LLVM_DEBUG(dbgs() << "Found alloca equal to global: " << AI << '\n');  in visitAllocaInst()
414         auto *DestTy = PointerType::get(AI.getType()->getPointerElementType(),  in visitAllocaInst()
418         if (AI.getType()->getPointerAddressSpace() ==  in visitAllocaInst()
420           Instruction *NewI = replaceInstUsesWith(AI, Cast);  in visitAllocaInst()
426           PtrReplacer.replacePointer(AI, Cast);  in visitAllocaInst()
435   return visitAllocSite(AI);  in visitAllocaInst()
833     if (AllocaInst *AI = dyn_cast<AllocaInst>(P)) {  in isObjectSizeLessThanOrEq()  local
834       if (!AI->getAllocatedType()->isSized())  in isObjectSizeLessThanOrEq()
837       ConstantInt *CS = dyn_cast<ConstantInt>(AI->getArraySize());  in isObjectSizeLessThanOrEq()
841       uint64_t TypeSize = DL.getTypeAllocSize(AI->getAllocatedType());  in isObjectSizeLessThanOrEq()