protect label from being optimized

[Ian Lance Taylor]

Kunal Parmar <kunalparmar@gmail.com> writes:

> Is this correct :
>        ret_label = gen_label_rtx ();
>        emit_move_insn (gen_rtx_REG (HImode, 7),
>                                    gen_rtx_LABEL_REF (VOIDmode,
> ret_label));
>        emit_call_insn (gen_brc_call_simulate (addr, args_size));
>        emit_label (ret_label);

It looks plausible.

Ian