NTH_INSN macro like NEXT_INSN?

[Maxim Blinov <maxim.a.blinov@xxxxxxxxx>]

Hi all,

I have an `rtx_insn`, and would like to view the Nth insn in that
list. From the debugger, I can do

(gdb) p debug_rtx (NEXT_INSN (first))
(gdb) p debug_rtx (NEXT_INSN (NEXT_INSN (first)))

and so on. Is there a macro I can use to get the Nth insn? E.g.

(gdb) p debug_rtx (NTH_INSN (first, 2))

Maxim