bool ShouldBeMegamorphic(int64_t compile_count, int64_t execution_count) {
  const int64_t kCompileThreshold = 10;
  const int64_t kMinExecutionsPerCompile = 50;

  // This heuristic is trying to capture the following property: have we sunk a
  // certain minimum amount of compile time into the cluster that didn't quite
  // "pay off"?
  return compile_count > kCompileThreshold &&
         execution_count < kMinExecutionsPerCompile * compile_count;
}