[debug-early, jit] Port of jit to debug-early

[Aldy Hernandez]

On 06/05/2015 03:00 PM, David Malcolm wrote:
> "jit" isn't part of "all" languages, and currently fails to build on
> the aldyh/debug-early branch:

The debug-early work is now in mainline.  Feel free to commit when you 
deem appropriate, since you are the jit maintainer ;-).

>   static void
> -jit_langhook_write_globals (void)
> +jit_langhook_post_compilation_parsing_cleanups (void)
>   {
>     gcc::jit::playback::context *ctxt = gcc::jit::active_playback_ctxt;
>     gcc_assert (ctxt);
>     JIT_LOG_SCOPE (ctxt->get_logger ());
>
> -  ctxt->write_global_decls_1 ();
> -
> -  /* This is the hook that runs the middle and backends: */
> -  symtab->finalize_compilation_unit ();
> -
> -  ctxt->write_global_decls_2 ();
> +  ctxt->finalize_global_decls ();

This hook gets called after the compilation proper has run, and we're 
trying to avoid it.  We're trying to get all the front-ends to finish 
their thing and avoid depending on the compilation proper.

Can you not get this to work without running finalize_global_decls after 
the compilation proper?  If not, then I see no problem with your 
patch....after all, C++ is still using this hook :(.

Thanks for working on this.

Aldy