/* Initialize the compiler, and compile the input file.  */
static void
do_compile (void)
{
  /* Initialize timing first.  The C front ends read the main file in
     the post_options hook, and C++ does file timings.  */
  if (time_report || !quiet_flag  || flag_detailed_statistics)
    timevar_init ();
  timevar_start (TV_TOTAL);

  process_options ();

  /* Don't do any more if an error has already occurred.  */
  if (!errorcount)
    {
      /* This must be run always, because it is needed to compute the FP
     predefined macros, such as __LDBL_MAX__, for targets using non
     default FP formats.  */
      init_adjust_machine_modes ();

      /* Set up the back-end if requested.  */
      if (!no_backend)
    backend_init ();

      /* Language-dependent initialization.  Returns true on success.  */
      if (lang_dependent_init (main_input_filename))
    compile_file ();

      finalize ();
    }

  /* Stop timing and print the times.  */
  timevar_stop (TV_TOTAL);
  timevar_print (stderr);
}