880 static bool canReplaceGEPIdxWithZero(InstCombiner &IC, GetElementPtrInst *GEPI,  in canReplaceGEPIdxWithZero()  argument
882   if (GEPI->getNumOperands() < 2)  in canReplaceGEPIdxWithZero()
887   auto FirstNZIdx = [](const GetElementPtrInst *GEPI) {  in canReplaceGEPIdxWithZero()  argument
889     for (unsigned IE = GEPI->getNumOperands(); I != IE; ++I) {  in canReplaceGEPIdxWithZero()
890       Value *V = GEPI->getOperand(I);  in canReplaceGEPIdxWithZero()
903   Idx = FirstNZIdx(GEPI);  in canReplaceGEPIdxWithZero()
904   if (Idx == GEPI->getNumOperands())  in canReplaceGEPIdxWithZero()
906   if (isa<Constant>(GEPI->getOperand(Idx)))  in canReplaceGEPIdxWithZero()
909   SmallVector<Value *, 4> Ops(GEPI->idx_begin(), GEPI->idx_begin() + Idx);  in canReplaceGEPIdxWithZero()
911     GetElementPtrInst::getIndexedType(GEPI->getSourceElementType(), Ops);  in canReplaceGEPIdxWithZero()
922     for (unsigned i = Idx+1, e = GEPI->getNumOperands(); i != e; ++i) {  in canReplaceGEPIdxWithZero()
923       KnownBits Known = IC.computeKnownBits(GEPI->getOperand(i), 0, MemI);  in canReplaceGEPIdxWithZero()
937   if (Idx+1 != GEPI->getNumOperands() && !GEPI->isInBounds())  in canReplaceGEPIdxWithZero()
942   return isObjectSizeLessThanOrEq(GEPI->getOperand(0), TyAllocSize, DL) &&  in canReplaceGEPIdxWithZero()
952   if (GetElementPtrInst *GEPI = dyn_cast<GetElementPtrInst>(Ptr)) {  in replaceGEPIdxWithZero()  local
954     if (canReplaceGEPIdxWithZero(IC, GEPI, &MemI, Idx)) {  in replaceGEPIdxWithZero()
955       Instruction *NewGEPI = GEPI->clone();  in replaceGEPIdxWithZero()
957         ConstantInt::get(GEPI->getOperand(Idx)->getType(), 0));  in replaceGEPIdxWithZero()
958       NewGEPI->insertBefore(GEPI);  in replaceGEPIdxWithZero()
972   if (GetElementPtrInst *GEPI = dyn_cast<GetElementPtrInst>(Ptr))  in canSimplifyNullStoreOrGEP()  local
973     Ptr = GEPI->getOperand(0);  in canSimplifyNullStoreOrGEP()
979   if (GetElementPtrInst *GEPI = dyn_cast<GetElementPtrInst>(Op)) {  in canSimplifyNullLoadOrGEP()  local
980     const Value *GEPI0 = GEPI->getOperand(0);  in canSimplifyNullLoadOrGEP()
982         !NullPointerIsDefined(LI.getFunction(), GEPI->getPointerAddressSpace()))  in canSimplifyNullLoadOrGEP()