[Bug libstdc++/109816] [13/14 Regression] r14-321 fix for PR108969 breaks NVPTX offloading due to __asm (".globl _ZSt21ios_base_library_initv")

["jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109816

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Tobias Burnus from comment #4)
> (In reply to Jakub Jelinek from comment #3)
> > And we emit all toplevel asms into the offloading target code?
> > Or how does it make into PTX?
> 
> It seems as if this is always written (once). Thus, the minimal change would
> be the following. We could save some bits by not writing
> lto_output_toplevel_asms without '-flto', but I think that is not really
> needed, given that top-level asm are rather rare and small.
> 
> --- a/gcc/lto-cgraph.cc
> +++ b/gcc/lto-cgraph.cc
> @@ -1587,3 +1587,5 @@ input_cgraph_1 (struct lto_file_decl_data *file_data,
>  
> +#ifndef ACCEL_COMPILER
>    lto_input_toplevel_asms (file_data, file_data->order_base);
> +#endif

The above can work only if toplevel asms are in separate section and so
inputting it or not doesn't affect input of other data.
I think it would be better to also not to stream it if lto_stream_offload_p.