[PATCH] Implement debug main pointer on IA64 VMS

[Jim Wilson]

On Wed, 2009-07-29 at 22:24 -0700, Douglas B Rupp wrote:
> +#if VMS_DEBUGGING_INFO
> +  if (vms_debug_main
> +      && strncmp (vms_debug_main, fnname, strlen (vms_debug_main)) == 0)
> +    {
> +      targetm.asm_out.globalize_label (asm_out_file, VMS_DEBUG_MAIN_POINTER);
> +      ASM_OUTPUT_DEF (asm_out_file, VMS_DEBUG_MAIN_POINTER, fnname);
> +      dwarf2out_vms_debug_main_pointer ();
> +      vms_debug_main = 0;
> +    }
> +#endif

Shouldn't you check write_symbols here?  There seems to be an assumption
here that if a target supports VMS debugging info, then it can't
possibly support any other type of debugging info.  That may be true
currently, but still I think it is cleaner to check the current debug
info format.

You are calling the dwarf2out_vms_debug_main_pointer function, but I
didn't see that in your IA-64 patches.  It could be in some separate
dwarf2 patch that wasn't cc'ed to me though.

Otherwise this looks OK to me.  Steve Ellcey may have other comments.

Jim