Once JDK-8191998 is fixed, there may be a speculative type available for the receiver. But Compile::call_generator() ignores it since there's no receiver profile available.

CallGenerator* Compile::call_generator(ciMethod* callee, int vtable_index, bool call_does_dispatch,
                                       JVMState* jvms, bool allow_inline,
                                       float prof_factor, ciKlass* speculative_receiver_type,
                                       bool allow_intrinsics, bool delayed_forbidden) {
...
  int receiver_count = -1;
  if (call_does_dispatch && UseTypeProfile && profile.has_receiver(0)) {
    // Receivers in the profile structure are ordered by call counts
    // so that the most called (major) receiver is profile.receiver(0).
    receiver_count = profile.receiver_count(0);
  }
...
    // Try using the type profile.
    if (call_does_dispatch && site_count > 0 && receiver_count > 0) {

receiver_count is always -1 for MH::linkTo*, so speculative_receiver_type isn't used to predict receiver type.