/**
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* @license
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* Copyright 2019 Google LLC. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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import { parseNodeName } from '../operations/executors/utils';
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/**
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* Given graph inputs and desired outputs, find the minimal set of nodes
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* to execute in order to compute the outputs. In addition return other useful
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* info such:
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* - Missing inputs needed to compute the output.
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* - Whether the subgraph contains dynamic ops (control flow, dynamic shape).
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* - Alternative inputs in order to avoid async (dynamic op) execution.
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*/
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export function getExecutionSubgraph(inputs, outputs, weightMap, initNodes) {
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const usedNodes = new Set();
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const missingInputs = [];
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let dynamicNode = null;
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let syncInputs = null;
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// Start with the outputs, going backwards and find all the nodes that are
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// needed to compute those outputs.
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const seen = new Set();
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const inputNodeNames = new Set(Object.keys(inputs).map((name) => parseNodeName(name)[0]));
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initNodes = initNodes || [];
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const initNodeNames = new Set(initNodes.map((node) => parseNodeName(node.name)[0]));
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const frontier = [...outputs];
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while (frontier.length > 0) {
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const node = frontier.pop();
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if (isControlFlow(node) || isDynamicShape(node) || isHashTable(node)) {
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if (dynamicNode == null) {
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dynamicNode = node;
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syncInputs = dynamicNode.children.map(child => child.name)
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.filter(name => usedNodes.has(name));
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}
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}
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usedNodes.add(node.name);
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// Weights are dead end since we already have their values.
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if (weightMap[node.name] != null) {
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continue;
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}
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// This node is a dead end since it's one of the user-provided inputs.
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if (inputNodeNames.has(node.name)) {
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continue;
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}
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// This node is a dead end since it doesn't have any inputs.
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if (initNodeNames.has(node.name)) {
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continue;
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}
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if (node.inputs.length === 0) {
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missingInputs.push(node.name);
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continue;
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}
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node.inputs.forEach(input => {
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// Don't add to the frontier if it is already there.
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if (seen.has(input.name)) {
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return;
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}
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seen.add(input.name);
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frontier.push(input);
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});
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}
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return { inputs, outputs, usedNodes, missingInputs, dynamicNode, syncInputs };
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}
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/**
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* Given the execution info, return a list of nodes in topological order that
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* need to be executed to compute the output.
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*/
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export function getNodesInTopologicalOrder(graph, executionInfo) {
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const { usedNodes, inputs } = executionInfo;
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const inputNodes = Object.keys(inputs)
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.map(name => parseNodeName(name)[0])
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.map(name => graph.nodes[name]);
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const initNodes = graph.initNodes || [];
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const isUsed = (node) => usedNodes.has(typeof node === 'string' ? node : node.name);
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function unique(nodes) {
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return [...new Map(nodes.map((node) => [node.name, node])).values()];
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}
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const predefinedNodes = unique([
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...inputNodes,
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...graph.weights,
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...initNodes,
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]).filter(isUsed);
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const allNodes = unique([
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...predefinedNodes,
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...Object.values(graph.nodes),
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]).filter(isUsed);
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const nameToNode = new Map(allNodes.map((node) => [node.name, node]));
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const inCounts = {};
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for (const node of allNodes) {
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inCounts[node.name] = inCounts[node.name] || 0;
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for (const child of node.children) {
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// When the child is unused, set in counts to infinity so that it will
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// never be decreased to 0 and added to the execution list.
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if (!isUsed(child)) {
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inCounts[child.name] = Number.POSITIVE_INFINITY;
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}
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inCounts[child.name] = (inCounts[child.name] || 0) + 1;
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}
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}
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// Build execution order for all used nodes regardless whether they are
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// predefined or not.
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const frontier = Object.entries(inCounts)
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.filter(([, inCount]) => inCount === 0)
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.map(([name]) => name);
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const orderedNodeNames = [...frontier];
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while (frontier.length > 0) {
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const nodeName = frontier.pop();
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const node = nameToNode.get(nodeName);
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for (const child of node.children.filter(isUsed)) {
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if (--inCounts[child.name] === 0) {
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orderedNodeNames.push(child.name);
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frontier.push(child.name);
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}
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}
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}
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const orderedNodes = orderedNodeNames.map((name) => nameToNode.get(name));
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const filteredOrderedNodes = filterPredefinedReachableNodes(orderedNodes, predefinedNodes);
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// TODO: Turn validation on/off with tf env flag.
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validateNodesExecutionOrder(filteredOrderedNodes, predefinedNodes);
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return filteredOrderedNodes;
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}
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/**
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* This is a helper function of `getNodesInTopologicalOrder`.
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* Returns ordered nodes reachable by at least one predefined node.
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* This can help us filter out redundant nodes from the returned node list.
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* For example:
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* If we have four nodes with dependencies like this:
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* a --> b --> c --> d
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* when node `c` is predefined (e.g. given as an input tensor), we can
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* skip node `a` and `b` since their outputs will never be used.
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*
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* @param orderedNodes Graph nodes in execution order.
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* @param predefinedNodes Graph inputs, weights, and init nodes. Nodes in this
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* list must have distinct names.
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*/
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function filterPredefinedReachableNodes(orderedNodes, predefinedNodes) {
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const nameToNode = new Map(orderedNodes.map((node) => [node.name, node]));
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// TODO: Filter out more nodes when >=2 nodes are predefined in a path.
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const stack = predefinedNodes.map((node) => node.name);
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const predefinedReachableNodeNames = new Set(stack);
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// Perform a DFS starting from the set of all predefined nodes
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// to find the set of all nodes reachable from the predefined nodes.
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while (stack.length > 0) {
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const nodeName = stack.pop();
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const node = nameToNode.get(nodeName);
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for (const child of node.children) {
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if (!nameToNode.has(child.name) ||
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predefinedReachableNodeNames.has(child.name)) {
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continue;
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}
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predefinedReachableNodeNames.add(child.name);
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stack.push(child.name);
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}
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}
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// Filter out unreachable nodes and build the ordered node list.
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const filteredOrderedNodes = orderedNodes.filter((node) => predefinedReachableNodeNames.has(node.name));
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return filteredOrderedNodes;
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}
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class NodesExecutionOrderError extends Error {
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constructor(message) {
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super(`NodesExecutionOrderError: ${message}`);
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}
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}
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/**
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* This is a helper function of `getNodesInTopologicalOrder`.
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* Validates property: given nodes `a` and `b`, Order(a) > Order(b) if `a`
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* is a child of `b`. This function throws an error if validation fails.
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*
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* @param orderedNodes Graph nodes in execution order.
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* @param predefinedNodes Graph inputs, weights, and init nodes. Nodes in this
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* list must have distinct names.
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*/
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function validateNodesExecutionOrder(orderedNodes, predefinedNodes) {
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const nodeNameToOrder = new Map(orderedNodes.map((node, order) => [node.name, order]));
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const predefinedNodeNames = new Set(predefinedNodes.map((node) => node.name));
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const isPredefined = (node) => predefinedNodeNames.has(typeof node === 'string' ? node : node.name);
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const willBeExecutedNodeNames = new Set(orderedNodes.map((node) => node.name));
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const willBeExecuted = (node) => willBeExecutedNodeNames.has(typeof node === 'string' ? node : node.name);
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for (const node of orderedNodes) {
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for (const child of node.children.filter(willBeExecuted)) {
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if (!nodeNameToOrder.has(child.name)) {
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throw new NodesExecutionOrderError(`Child ${child.name} of node ${node.name} is unreachable.`);
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}
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if (nodeNameToOrder.get(node.name) > nodeNameToOrder.get(child.name)) {
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throw new NodesExecutionOrderError(`Node ${node.name} is scheduled to run after its child ${child.name}.`);
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}
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}
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if (!isPredefined(node)) {
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for (const input of node.inputs) {
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if (!nodeNameToOrder.has(input.name)) {
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throw new NodesExecutionOrderError(`Input ${input.name} of node ${node.name} is unreachable.`);
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}
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if (nodeNameToOrder.get(input.name) > nodeNameToOrder.get(node.name)) {
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throw new NodesExecutionOrderError(`Node ${node.name} is scheduled to run before its input ${input.name}.`);
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}
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}
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}
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}
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}
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/**
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* Given the execution info, return a map from node name to the disposable
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* node name list after its execution.
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*
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* @returns A map from node name to disposable nodes after its
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* execution. That is, for a node `x`, `nodeLiveUntilMap[x]` indicates
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* all nodes which their intermediate tensors should be disposed after `x`
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* being executed.
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*/
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export function getNodeLiveUntilMap(orderedNodes) {
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const nodeNameToOrder = new Map(orderedNodes.map((node, order) => [node.name, order]));
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const INF_LIFE = Number.MAX_SAFE_INTEGER;
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// Make control flow nodes (and consequently their direct parents)
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// live forever since they're tricky to track correctly.
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const selfLifespans = orderedNodes.map((node, nodeOrder) => isControlFlow(node) ? INF_LIFE : nodeOrder);
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const getSelfLifeSpan = (node) => {
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const selfLife = selfLifespans[nodeNameToOrder.get(node.name)];
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if (selfLife == null) {
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// If nodeToOrder does not contain the node, it is unused or
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// unreachable in graph.
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return -1;
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}
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return selfLife;
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};
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// `liveUntil[i]` points to the last node in the `orderedNodes` array that
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// may depend on tensors from node `i`. It indicates that all the
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// intermediate tensors from `orderedNodes[i]` should be disposed after
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// `orderedNodes[liveUntil[i]]` is executed.
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// A node lives long enough to pass on its tensors to its children.
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// It lives until at least `max(node's position, children's positions)`.
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const liveUntilOrders = orderedNodes.map((node, nodeOrder) => {
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return node.children.map(getSelfLifeSpan)
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.reduce((a, b) => Math.max(a, b), selfLifespans[nodeOrder]);
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});
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// liveUntilMap:
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// - Key: Name of a node `x`
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// - Values: All nodes whose intermediate tensors should be disposed
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// after `x` is executed.
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const liveUntilMap = new Map();
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for (let nodeOrder = 0; nodeOrder < orderedNodes.length; ++nodeOrder) {
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const liveUntilOrder = liveUntilOrders[nodeOrder];
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if (liveUntilOrder === INF_LIFE) {
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continue;
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}
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const node = orderedNodes[nodeOrder];
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const liveUntilNode = orderedNodes[liveUntilOrder];
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if (!liveUntilMap.has(liveUntilNode.name)) {
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liveUntilMap.set(liveUntilNode.name, []);
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}
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liveUntilMap.get(liveUntilNode.name).push(node);
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}
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return liveUntilMap;
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}
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const CONTROL_FLOW_OPS = new Set([
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'Switch', 'Merge', 'Enter', 'Exit', 'NextIteration', 'StatelessIf',
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'StatelessWhile', 'if', 'While'
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]);
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const DYNAMIC_SHAPE_OPS = new Set([
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'NonMaxSuppressionV2', 'NonMaxSuppressionV3', 'NonMaxSuppressionV5', 'Where'
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]);
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const HASH_TABLE_OPS = new Set([
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'HashTable', 'HashTableV2', 'LookupTableImport', 'LookupTableImportV2',
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'LookupTableFind', 'LookupTableFindV2', 'LookupTableSize', 'LookupTableSizeV2'
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]);
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export function isControlFlow(node) {
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return CONTROL_FLOW_OPS.has(node.op);
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}
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export function isDynamicShape(node) {
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return DYNAMIC_SHAPE_OPS.has(node.op);
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}
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export function isHashTable(node) {
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return HASH_TABLE_OPS.has(node.op);
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}
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* @license\n * Copyright 2019 Google LLC. All Rights Reserved.\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n * =============================================================================\n */\n\nimport {NamedTensorMap} from '@tensorflow/tfjs-core';\n\nimport {NamedTensorsMap} from '../data/types';\nimport {parseNodeName} from '../operations/executors/utils';\nimport {Graph, Node} from '../operations/types';\n\nexport interface ExecutionInfo {\n  inputs: NamedTensorMap;\n  outputs: Node[];\n  usedNodes: Set<string>;\n  missingInputs: string[];\n  dynamicNode: Node;\n  syncInputs: string[];\n}\n\n/**\n * Given graph inputs and desired outputs, find the minimal set of nodes\n * to execute in order to compute the outputs. In addition return other useful\n * info such:\n * - Missing inputs needed to compute the output.\n * - Whether the subgraph contains dynamic ops (control flow, dynamic shape).\n * - Alternative inputs in order to avoid async (dynamic op) execution.\n */\nexport function getExecutionSubgraph(\n    inputs: NamedTensorMap, outputs: Node[], weightMap: NamedTensorsMap,\n    initNodes?: Node[]): ExecutionInfo {\n  const usedNodes = new Set<string>();\n  const missingInputs: string[] = [];\n  let dynamicNode: Node = null;\n  let syncInputs: string[] = null;\n\n  // Start with the outputs, going backwards and find all the nodes that are\n  // needed to compute those outputs.\n  const seen = new Set<string>();\n  const inputNodeNames =\n      new Set(Object.keys(inputs).map((name) => parseNodeName(name)[0]));\n\n  initNodes = initNodes || [];\n  const initNodeNames =\n      new Set(initNodes.map((node) => parseNodeName(node.name)[0]));\n\n  const frontier = [...outputs];\n  while (frontier.length > 0) {\n    const node = frontier.pop();\n    if (isControlFlow(node) || isDynamicShape(node) || isHashTable(node)) {\n      if (dynamicNode == null) {\n        dynamicNode = node;\n        syncInputs = dynamicNode.children.map(child => child.name)\n                         .filter(name => usedNodes.has(name));\n      }\n    }\n    usedNodes.add(node.name);\n\n    // Weights are dead end since we already have their values.\n    if (weightMap[node.name] != null) {\n      continue;\n    }\n    // This node is a dead end since it's one of the user-provided inputs.\n    if (inputNodeNames.has(node.name)) {\n      continue;\n    }\n    // This node is a dead end since it doesn't have any inputs.\n    if (initNodeNames.has(node.name)) {\n      continue;\n    }\n    if (node.inputs.length === 0) {\n      missingInputs.push(node.name);\n      continue;\n    }\n    node.inputs.forEach(input => {\n      // Don't add to the frontier if it is already there.\n      if (seen.has(input.name)) {\n        return;\n      }\n      seen.add(input.name);\n      frontier.push(input);\n    });\n  }\n  return {inputs, outputs, usedNodes, missingInputs, dynamicNode, syncInputs};\n}\n\n/**\n * Given the execution info, return a list of nodes in topological order that\n * need to be executed to compute the output.\n */\nexport function getNodesInTopologicalOrder(\n    graph: Graph, executionInfo: ExecutionInfo): Node[] {\n  const {usedNodes, inputs} = executionInfo;\n  const inputNodes = Object.keys(inputs)\n                         .map(name => parseNodeName(name)[0])\n                         .map(name => graph.nodes[name]);\n  const initNodes = graph.initNodes || [];\n\n  const isUsed = (node: Node|string) =>\n      usedNodes.has(typeof node === 'string' ? node : node.name);\n\n  function unique(nodes: Node[]): Node[] {\n    return [...new Map(nodes.map((node) => [node.name, node])).values()];\n  }\n  const predefinedNodes = unique([\n                            ...inputNodes,\n                            ...graph.weights,\n                            ...initNodes,\n                          ]).filter(isUsed);\n  const allNodes = unique([\n                     ...predefinedNodes,\n                     ...Object.values(graph.nodes),\n                   ]).filter(isUsed);\n  const nameToNode =\n      new Map<string, Node>(allNodes.map((node) => [node.name, node]));\n\n  const inCounts: Record<string, number> = {};\n  for (const node of allNodes) {\n    inCounts[node.name] = inCounts[node.name] || 0;\n    for (const child of node.children) {\n      // When the child is unused, set in counts to infinity so that it will\n      // never be decreased to 0 and added to the execution list.\n      if (!isUsed(child)) {\n        inCounts[child.name] = Number.POSITIVE_INFINITY;\n      }\n      inCounts[child.name] = (inCounts[child.name] || 0) + 1;\n    }\n  }\n\n  // Build execution order for all used nodes regardless whether they are\n  // predefined or not.\n  const frontier = Object.entries(inCounts)\n                       .filter(([, inCount]) => inCount === 0)\n                       .map(([name]) => name);\n  const orderedNodeNames = [...frontier];\n  while (frontier.length > 0) {\n    const nodeName = frontier.pop();\n    const node = nameToNode.get(nodeName)!;\n    for (const child of node.children.filter(isUsed)) {\n      if (--inCounts[child.name] === 0) {\n        orderedNodeNames.push(child.name);\n        frontier.push(child.name);\n      }\n    }\n  }\n\n  const orderedNodes = orderedNodeNames.map((name) => nameToNode.get(name));\n  const filteredOrderedNodes =\n      filterPredefinedReachableNodes(orderedNodes, predefinedNodes);\n\n  // TODO: Turn validation on/off with tf env flag.\n  validateNodesExecutionOrder(filteredOrderedNodes, predefinedNodes);\n\n  return filteredOrderedNodes;\n}\n\n/**\n * This is a helper function of `getNodesInTopologicalOrder`.\n * Returns ordered nodes reachable by at least one predefined node.\n * This can help us filter out redundant nodes from the returned node list.\n * For example:\n * If we have four nodes with dependencies like this:\n *   a --> b --> c --> d\n * when node `c` is predefined (e.g. given as an input tensor), we can\n * skip node `a` and `b` since their outputs will never be used.\n *\n * @param orderedNodes Graph nodes in execution order.\n * @param predefinedNodes Graph inputs, weights, and init nodes. Nodes in this\n *     list must have distinct names.\n */\nfunction filterPredefinedReachableNodes(\n    orderedNodes: Node[], predefinedNodes: Node[]) {\n  const nameToNode =\n      new Map<string, Node>(orderedNodes.map((node) => [node.name, node]));\n\n  // TODO: Filter out more nodes when >=2 nodes are predefined in a path.\n  const stack = predefinedNodes.map((node) => node.name);\n  const predefinedReachableNodeNames = new Set(stack);\n  // Perform a DFS starting from the set of all predefined nodes\n  // to find the set of all nodes reachable from the predefined nodes.\n  while (stack.length > 0) {\n    const nodeName = stack.pop();\n    const node = nameToNode.get(nodeName)!;\n    for (const child of node.children) {\n      if (!nameToNode.has(child.name) ||\n          predefinedReachableNodeNames.has(child.name)) {\n        continue;\n      }\n      predefinedReachableNodeNames.add(child.name);\n      stack.push(child.name);\n    }\n  }\n\n  // Filter out unreachable nodes and build the ordered node list.\n  const filteredOrderedNodes = orderedNodes.filter(\n      (node) => predefinedReachableNodeNames.has(node.name));\n\n  return filteredOrderedNodes;\n}\n\nclass NodesExecutionOrderError extends Error {\n  constructor(message: string) {\n    super(`NodesExecutionOrderError: ${message}`);\n  }\n}\n\n/**\n * This is a helper function of `getNodesInTopologicalOrder`.\n * Validates property: given nodes `a` and `b`, Order(a) > Order(b) if `a`\n * is a child of `b`. This function throws an error if validation fails.\n *\n * @param orderedNodes Graph nodes in execution order.\n * @param predefinedNodes Graph inputs, weights, and init nodes. Nodes in this\n *     list must have distinct names.\n */\nfunction validateNodesExecutionOrder(\n    orderedNodes: Node[], predefinedNodes: Node[]) {\n  const nodeNameToOrder = new Map<string, number>(\n      orderedNodes.map((node, order) => [node.name, order]));\n  const predefinedNodeNames = new Set(predefinedNodes.map((node) => node.name));\n  const isPredefined = (node: Node|string) =>\n      predefinedNodeNames.has(typeof node === 'string' ? node : node.name);\n  const willBeExecutedNodeNames =\n      new Set(orderedNodes.map((node) => node.name));\n  const willBeExecuted = (node: Node|string) =>\n      willBeExecutedNodeNames.has(typeof node === 'string' ? node : node.name);\n\n  for (const node of orderedNodes) {\n    for (const child of node.children.filter(willBeExecuted)) {\n      if (!nodeNameToOrder.has(child.name)) {\n        throw new NodesExecutionOrderError(\n            `Child ${child.name} of node ${node.name} is unreachable.`);\n      }\n      if (nodeNameToOrder.get(node.name) > nodeNameToOrder.get(child.name)) {\n        throw new NodesExecutionOrderError(`Node ${\n            node.name} is scheduled to run after its child ${child.name}.`);\n      }\n    }\n    if (!isPredefined(node)) {\n      for (const input of node.inputs) {\n        if (!nodeNameToOrder.has(input.name)) {\n          throw new NodesExecutionOrderError(\n              `Input ${input.name} of node ${node.name} is unreachable.`);\n        }\n        if (nodeNameToOrder.get(input.name) > nodeNameToOrder.get(node.name)) {\n          throw new NodesExecutionOrderError(`Node ${\n              node.name} is scheduled to run before its input ${input.name}.`);\n        }\n      }\n    }\n  }\n}\n\n/**\n * Given the execution info, return a map from node name to the disposable\n * node name list after its execution.\n *\n * @returns A map from node name to disposable nodes after its\n *     execution. That is, for a node `x`, `nodeLiveUntilMap[x]` indicates\n *     all nodes which their intermediate tensors should be disposed after `x`\n *     being executed.\n */\nexport function getNodeLiveUntilMap(orderedNodes: Node[]): Map<string, Node[]> {\n  const nodeNameToOrder = new Map<string, number>(\n      orderedNodes.map((node, order) => [node.name, order]));\n\n  const INF_LIFE = Number.MAX_SAFE_INTEGER;\n  // Make control flow nodes (and consequently their direct parents)\n  // live forever since they're tricky to track correctly.\n  const selfLifespans = orderedNodes.map(\n      (node, nodeOrder) => isControlFlow(node) ? INF_LIFE : nodeOrder);\n  const getSelfLifeSpan = (node: Node) => {\n    const selfLife = selfLifespans[nodeNameToOrder.get(node.name)!];\n    if (selfLife == null) {\n      // If nodeToOrder does not contain the node, it is unused or\n      // unreachable in graph.\n      return -1;\n    }\n    return selfLife;\n  };\n\n  // `liveUntil[i]` points to the last node in the `orderedNodes` array that\n  // may depend on tensors from node `i`. It indicates that all the\n  // intermediate tensors from `orderedNodes[i]` should be disposed after\n  // `orderedNodes[liveUntil[i]]` is executed.\n  // A node lives long enough to pass on its tensors to its children.\n  // It lives until at least `max(node's position, children's positions)`.\n  const liveUntilOrders = orderedNodes.map((node, nodeOrder) => {\n    return node.children.map(getSelfLifeSpan)\n        .reduce((a, b) => Math.max(a, b), selfLifespans[nodeOrder]);\n  });\n\n  // liveUntilMap:\n  // - Key: Name of a node `x`\n  // - Values: All nodes whose intermediate tensors should be disposed\n  //           after `x` is executed.\n  const liveUntilMap = new Map<string, Node[]>();\n  for (let nodeOrder = 0; nodeOrder < orderedNodes.length; ++nodeOrder) {\n    const liveUntilOrder = liveUntilOrders[nodeOrder];\n    if (liveUntilOrder === INF_LIFE) {\n      continue;\n    }\n    const node = orderedNodes[nodeOrder];\n    const liveUntilNode = orderedNodes[liveUntilOrder];\n    if (!liveUntilMap.has(liveUntilNode.name)) {\n      liveUntilMap.set(liveUntilNode.name, []);\n    }\n    liveUntilMap.get(liveUntilNode.name)!.push(node);\n  }\n  return liveUntilMap;\n}\n\nconst CONTROL_FLOW_OPS = new Set([\n  'Switch', 'Merge', 'Enter', 'Exit', 'NextIteration', 'StatelessIf',\n  'StatelessWhile', 'if', 'While'\n]);\nconst DYNAMIC_SHAPE_OPS = new Set([\n  'NonMaxSuppressionV2', 'NonMaxSuppressionV3', 'NonMaxSuppressionV5', 'Where'\n]);\nconst HASH_TABLE_OPS = new Set([\n  'HashTable', 'HashTableV2', 'LookupTableImport', 'LookupTableImportV2',\n  'LookupTableFind', 'LookupTableFindV2', 'LookupTableSize', 'LookupTableSizeV2'\n]);\n\nexport function isControlFlow(node: Node) {\n  return CONTROL_FLOW_OPS.has(node.op);\n}\n\nexport function isDynamicShape(node: Node) {\n  return DYNAMIC_SHAPE_OPS.has(node.op);\n}\n\nexport function isHashTable(node: Node) {\n  return HASH_TABLE_OPS.has(node.op);\n}\n"]}
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