Question on INSN_P and "real" insns

[Georg-Johann Lay <avr at gjlay dot de>]

In rtl.h there is

/* Predicate yielding nonzero iff X is a real insn.  */
#define INSN_P(X) \
  (NONJUMP_INSN_P (X) || DEBUG_INSN_P (X) || JUMP_P (X) || CALL_P (X))

and in emit-rtl:


/* Return the last INSN, CALL_INSN or JUMP_INSN before INSN;
   or 0, if there is none.  This routine does not look inside
   SEQUENCEs.  */

rtx
prev_real_insn (rtx insn)
{
  while (insn)
    {
      insn = PREV_INSN (insn);
      if (insn == 0 || INSN_P (insn))
	break;
    }

  return insn;
}

The question for me is now what means "real"?

>From my understanding a "real" insn is an insn that leads to code that will be
executed like INSN, CALL_INSN or JUMP_INSN but not DEBUG_INSN that's used for
location tracking or shipping debug information or CODE_LABEL or whatever.

This means that next_real_insn depends on -g? And that I have to write my own
next really_real_insn?

next_nonnote_nondebug_insn is not what I need (no CODE_LABEL etc.)

Thanks for any hints,

Johann