String lhs = testString;
    String rhs = testString.toUpperCase();

    boolean dummy = false;
    for (int i = 0; i < reps; i++) {
      dummy ^= Ascii.equalsIgnoreCase(lhs, rhs);
    }
    return dummy;
  }

  @Benchmark
  boolean equalsIgnoreCaseJDK(int reps) {
    // This benchmark has no concept of "noWorkToDo".
    String lhs = testString;
    String rhs = testString.toUpperCase();

    String lhs = testString;
    String rhs = testString.toUpperCase();

    boolean dummy = false;
    for (int i = 0; i < reps; i++) {
      dummy ^= Ascii.equalsIgnoreCase(lhs, rhs);
    }
    return dummy;
  }

  @Benchmark
  boolean equalsIgnoreCaseJDK(int reps) {
    // This benchmark has no concept of "noWorkToDo".
    String lhs = testString;
    String rhs = testString.toUpperCase();

    public int compare(@Nullable String lhs, @Nullable String rhs) {
      if (lhs == rhs) {
        return 0;
      }
      if (lhs == null) {
        // lhs (null) comes just before justAfterNull.
        // If rhs is b, lhs comes first.
        if (rhs.equals(justAfterNull)) {
          return -1;
        }
        return justAfterNull.compareTo(rhs);
      }
      if (rhs == null) {

}

var (
	// https://github.com/golang/lint/blob/master/lint.go#L770
	commonInitialisms         = []string{"API", "ASCII", "CPU", "CSS", "DNS", "EOF", "GUID", "HTML", "HTTP", "HTTPS", "ID", "IP", "JSON", "LHS", "QPS", "RAM", "RHS", "RPC", "SLA", "SMTP", "SSH", "TLS", "TTL", "UID", "UI", "UUID", "URI", "URL", "UTF8", "VM", "XML", "XSRF", "XSS"}
	commonInitialismsReplacer *strings.Replacer
)

func init() {

      char c2 = s2.charAt(i);
      if (c1 == c2) {
        continue;
      }
      int alphaIndex = getAlphaIndex(c1);
      // This was also benchmarked using '&' to avoid branching (but always evaluate the rhs),
      // however this showed no obvious improvement.
      if (alphaIndex < 26 && alphaIndex == getAlphaIndex(c2)) {
        continue;
      }
      return false;
    }
    return true;
  }