147                                AllocaInst *AI,  in isOnlyCopiedFromConstantMemory()  argument
150   if (isOnlyCopiedFromConstantMemory(AA, AI, TheCopy, ToDelete))  in isOnlyCopiedFromConstantMemory()
156 static bool isDereferenceableForAllocaSize(const Value *V, const AllocaInst *AI,  in isDereferenceableForAllocaSize()  argument
158   if (AI->isArrayAllocation())  in isDereferenceableForAllocaSize()
160   uint64_t AllocaSize = DL.getTypeStoreSize(AI->getAllocatedType());  in isDereferenceableForAllocaSize()
163   return isDereferenceableAndAlignedPointer(V, AI->getAlign(),  in isDereferenceableForAllocaSize()
168                                             AllocaInst &AI) {  in simplifyAllocaArraySize()  argument
170   if (!AI.isArrayAllocation()) {  in simplifyAllocaArraySize()
172     if (AI.getArraySize()->getType()->isIntegerTy(32))  in simplifyAllocaArraySize()
176     return IC.replaceOperand(AI, 0, IC.Builder.getInt32(1));  in simplifyAllocaArraySize()
180   if (const ConstantInt *C = dyn_cast<ConstantInt>(AI.getArraySize())) {  in simplifyAllocaArraySize()
182       Type *NewTy = ArrayType::get(AI.getAllocatedType(), C->getZExtValue());  in simplifyAllocaArraySize()
183       AllocaInst *New = IC.Builder.CreateAlloca(NewTy, AI.getAddressSpace(),  in simplifyAllocaArraySize()
184                                                 nullptr, AI.getName());  in simplifyAllocaArraySize()
185       New->setAlignment(AI.getAlign());  in simplifyAllocaArraySize()
197       Type *IdxTy = IC.getDataLayout().getIntPtrType(AI.getType());  in simplifyAllocaArraySize()
206       return IC.replaceInstUsesWith(AI, GEP);  in simplifyAllocaArraySize()
210   if (isa<UndefValue>(AI.getArraySize()))  in simplifyAllocaArraySize()
211     return IC.replaceInstUsesWith(AI, Constant::getNullValue(AI.getType()));  in simplifyAllocaArraySize()
215   Type *IntPtrTy = IC.getDataLayout().getIntPtrType(AI.getType());  in simplifyAllocaArraySize()
216   if (AI.getArraySize()->getType() != IntPtrTy) {  in simplifyAllocaArraySize()
217     Value *V = IC.Builder.CreateIntCast(AI.getArraySize(), IntPtrTy, false);  in simplifyAllocaArraySize()
218     return IC.replaceOperand(AI, 0, V);  in simplifyAllocaArraySize()
354 Instruction *InstCombinerImpl::visitAllocaInst(AllocaInst &AI) {  in visitAllocaInst()  argument
355   if (auto *I = simplifyAllocaArraySize(*this, AI))  in visitAllocaInst()
358   if (AI.getAllocatedType()->isSized()) {  in visitAllocaInst()
362     if (DL.getTypeAllocSize(AI.getAllocatedType()).getKnownMinSize() == 0) {  in visitAllocaInst()
366       if (AI.isArrayAllocation())  in visitAllocaInst()
367         return replaceOperand(AI, 0,  in visitAllocaInst()
368             ConstantInt::get(AI.getArraySize()->getType(), 1));  in visitAllocaInst()
371       BasicBlock &EntryBlock = AI.getParent()->getParent()->getEntryBlock();  in visitAllocaInst()
373       if (FirstInst != &AI) {  in visitAllocaInst()
381           AI.moveBefore(FirstInst);  in visitAllocaInst()
382           return &AI;  in visitAllocaInst()
388         const Align MaxAlign = std::max(EntryAI->getAlign(), AI.getAlign());  in visitAllocaInst()
390         if (AI.getType() != EntryAI->getType())  in visitAllocaInst()
391           return new BitCastInst(EntryAI, AI.getType());  in visitAllocaInst()
392         return replaceInstUsesWith(AI, EntryAI);  in visitAllocaInst()
404   if (MemTransferInst *Copy = isOnlyCopiedFromConstantMemory(AA, &AI, ToDelete)) {  in visitAllocaInst()
406     Align AllocaAlign = AI.getAlign();  in visitAllocaInst()
408       TheSrc, AllocaAlign, DL, &AI, &AC, &DT);  in visitAllocaInst()
410         isDereferenceableForAllocaSize(TheSrc, &AI, DL) &&  in visitAllocaInst()
414       LLVM_DEBUG(dbgs() << "Found alloca equal to global: " << AI << '\n');  in visitAllocaInst()
417       auto *DestTy = PointerType::get(AI.getAllocatedType(), SrcAddrSpace);  in visitAllocaInst()
418       if (AI.getType()->getAddressSpace() == SrcAddrSpace) {  in visitAllocaInst()
423         Instruction *NewI = replaceInstUsesWith(AI, Cast);  in visitAllocaInst()
430       if (PtrReplacer.collectUsers(AI)) {  in visitAllocaInst()
435         PtrReplacer.replacePointer(AI, Cast);  in visitAllocaInst()
443   return visitAllocSite(AI);  in visitAllocaInst()
764     if (AllocaInst *AI = dyn_cast<AllocaInst>(P)) {  in isObjectSizeLessThanOrEq()  local
765       if (!AI->getAllocatedType()->isSized())  in isObjectSizeLessThanOrEq()
768       ConstantInt *CS = dyn_cast<ConstantInt>(AI->getArraySize());  in isObjectSizeLessThanOrEq()
772       uint64_t TypeSize = DL.getTypeAllocSize(AI->getAllocatedType());  in isObjectSizeLessThanOrEq()