Method cloneSubtree

deps/v8/tools/profile.mjs:1085–1096

* Creates a subtree by cloning and merging all subtrees rooted at nodes * with a given label. E.g. cloning the following call tree on label 'A' * will give the following result: * * -- * /

(label)

   * @param {string} label The label of the new root node.
   */
  cloneSubtree(label) {
    const subTree = new CallTree();
    this.traverse((node, parent) => {
      if (!parent && node.label != label) {
        return null;
      }
      const child = (parent ? parent : subTree).findOrAddChild(node.label);
      child.selfWeight += node.selfWeight;
      return child;
    });
    return subTree;
  }

  /**
   * Computes total weights in the call graph.