847     const SCEV *Diff = SE->getMinusSCEV(LSCEV, B.BaseSCEV);  in addOneCandidate()  local
848     if (isValidDiff(Diff)) {  in addOneCandidate()
849       B.Elements.push_back(BucketElement(Diff, MemI));  in addOneCandidate()
1267             const SCEVConstant *Diff = dyn_cast<SCEVConstant>(  in alreadyPrepared()  local
1269             if (Diff && !Diff->getAPInt().urem(Form)) {  in alreadyPrepared()
1413   auto isValidConstantDiff = [](const SCEV *Diff) {  in runOnLoop()  argument
1414     return dyn_cast<SCEVConstant>(Diff) != nullptr;  in runOnLoop()
1419   auto isValidChainCommoningDiff = [](const SCEV *Diff) {  in runOnLoop()  argument
1420     assert(Diff && "Invalid Diff!\n");  in runOnLoop()
1423     if (isa<SCEVConstant>(Diff))  in runOnLoop()
1427     if (isa<SCEVUnknown>(Diff) && Diff->getType()->isIntegerTy())  in runOnLoop()
1430     const SCEVNAryExpr *ADiff = dyn_cast<SCEVNAryExpr>(Diff);  in runOnLoop()