https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108772
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #6)
> (In reply to Richard Biener from comment #5)
> > another possibility would be to stream "no DIE" info for not late
> > created decls
>
> like by setting DECL_IGNORED_P on them? Like maybe with the following
> which also fixes the issue:
>
> diff --git a/gcc/lto-streamer-in.cc b/gcc/lto-streamer-in.cc
> index 03cb41cfa16..f91e51b9327 100644
> --- a/gcc/lto-streamer-in.cc
> +++ b/gcc/lto-streamer-in.cc
> @@ -1739,6 +1739,10 @@ lto_read_tree_1 (class lto_input_block *ib, class
> data_in *data_in, tree expr)
> dref_entry e = { expr, str, off };
> dref_queue.safe_push (e);
> }
> + else if (DECL_P (expr))
> + /* Avoid creating a full DIE late for a decl that didn't have
> + it created early. */
> + DECL_IGNORED_P (expr) = 1;
> }
> }
Even using
else if (DECL_P (expr)
&& ! DECL_ABSTRACT_ORIGIN (expr)
&& ! (TARGET_PECOFF || TARGET_COFF))
gets us quite some guality regressions.
The original proposed change feels wrong though.
