Re: Where is setup for "goto" in nested function created?

[Andy H <hutchinsonandy at aim dot com>]

Thanks Ian!

I found it in function.c (expand_function_start)

     emit_move_insn (r_save, virtual_stack_vars_rtx);

Whereas it should be

     emit_move_insn (r_save, targetm.builtin_setjmp_frame_value ());

to match same construction used for setjmp.

thanks for help!



Ian Lance Taylor wrote:
> hutchinsonandy@aim.com writes:
>
>   
> > expand_builtin_nonlocal_goto is fine. This perform stack restore,
> > extracts frame pointer value and does jump.
> >
> > reciever is fine - this jump destination does restore of frame pointer.
> >
> > The problem I have is with frame pointer value that is saved in by
> > "setup" prior to all this
> >
> > For goto is does not use expand_builtin_setjmp_setup - (pathetically)
> > I can't find what it is using.
> >     
>
> I'm not really sure just what you are after (and I'm not sure that I
> would know the answer if I did).  Most of the relevant code should be
> somewhere in tree-nested.c.  Also look at expand_function_start, and
> in general any use of cfun->nonlocal_goto_save_area.
>
> Ian
>