if (loopExitWeight == 0f) {  loopExitWeight = 0.2f; }
  private void computeMultiplier(OPT_LSTNode n) {    n.initializeLoopExits();    computeNodeWeights(n);    float loopExitWeight = computeLoopExitWeight(n);    if (loopExitWeight == 0f) {       // loop with no normal exits      loopExitWeight = 0.2f; // loop executes 5 times.    }    n.loopMultiplier = 1.0f / loopExitWeight;  }