Review

class AliasKeywords {
  /**
   * Calculates the minimum number of occurrences of throw needed to alias
   * throw.
   */
  static int estimateMinOccurrencesRequriedToAlias() {
    // Assuming that the alias function name is two bytes in length, two bytes
    // will be saved per occurrence of throw:
    //   <code>throw e;</code>, compared to
    //   <code>TT(e);</code>.
    // However, the alias definition is some length, N, e.g.,
    //   <code>function TT(t){throw t;}</code>
    // Hence there must be more than N/2 occurrences of throw to reduce
    // the code size.
    Node alias = createAliasFunctionNode("TT");
    return InlineCostEstimator.getCost(alias) / 2 + 1;
  }

}