79   explicit TransformOpMemFreeAnalysis(Operation *root) {  in TransformOpMemFreeAnalysis()
80     root->walk([&](Operation *op) {  in TransformOpMemFreeAnalysis()
97     static PotentialDeleters maybeFreed(ArrayRef<Operation *> deleters) {  in maybeFreed()
113     ArrayRef<Operation *> getOps() const { return deleters; }  in getOps()
117     explicit PotentialDeleters(ArrayRef<Operation *> ops) {  in PotentialDeleters()
122     SmallVector<Operation *> deleters;
130     const llvm::SmallPtrSet<Operation *, 2> &deleters = freedBy[operand.get()];  in isUseLive()
136     Operation *valueSource =  in isUseLive()
151     SmallVector<Operation *> ancestors;  in isUseLive()
152     Operation *ancestor = operand.getOwner();  in isUseLive()
164     for (Operation *ancestor : ancestors) {  in isUseLive()
218   static PotentialDeleters maybeFreed(ArrayRef<Operation *> deleters) {  in maybeFreed()
227   isFreedBetween(Value value, Operation *first, Operation *last,  in isFreedBetween()
228                  llvm::function_ref<Operation *(Operation *)> getNext) const {  in isFreedBetween()
232     const llvm::SmallPtrSet<Operation *, 2> &deleters = it->getSecond();  in isFreedBetween()
233     for (Operation *op = getNext(first); op != last; op = getNext(op)) {  in isFreedBetween()
244   PotentialDeleters isFreedInBlockAfter(Operation *root, Value value,  in isFreedInBlockAfter()
245                                         Operation *before = nullptr) const {  in isFreedInBlockAfter()
247                           [](Operation *op) { return op->getNextNode(); });  in isFreedInBlockAfter()
252   PotentialDeleters isFreedInBlockBefore(Operation *root, Value value) const {  in isFreedInBlockBefore()
254                           [](Operation *op) { return op->getPrevNode(); });  in isFreedInBlockBefore()
286       for (Operation &op : *block) {  in isMaybeFreedOnPaths()
323   void collectFreedValues(Operation *root) {  in collectFreedValues()
325     root->walk([&](Operation *child) {  in collectFreedValues()
342           Operation *parent = child;  in collectFreedValues()
357   DenseMap<Value, llvm::SmallPtrSet<Operation *, 2>> freedBy;
374     getOperation()->walk([&](Operation *child) {  in runOnOperation()
385         for (Operation *d : deleters.getOps()) {  in runOnOperation()