// top of expression stack
inline intptr_t* frame::interpreter_frame_tos_address() const {
  intptr_t* last_sp = interpreter_frame_last_sp();
  if (last_sp == NULL) {
    return sp();
  } else {
    // sp() may have been extended or shrunk by an adapter.  At least
    // check that we don't fall behind the legal region.
    // For top deoptimized frame last_sp == interpreter_frame_monitor_end.
    assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
    return last_sp;
  }
}
inline intptr_t* frame::interpreter_frame_expression_stack() const {
  intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
  return monitor_end-1;
}
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// bottom(base) of the expression stack (highest address)
inline intptr_t* frame::interpreter_frame_expression_stack() const {
  return (intptr_t*)interpreter_frame_monitor_end() - 1;
}