https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63546
--- Comment #8 from Jan Hubicka <hubicka at ucw dot cz> ---
Hi,
this patch should avoid production of RTL only for those vars that we know are
never used by real code.
Index: dwarf2out.c
===================================================================
--- dwarf2out.c (revision 216317)
+++ dwarf2out.c (working copy)
@@ -15755,7 +15755,9 @@ rtl_for_decl_location (tree decl)
&& TREE_STATIC (decl)
&& DECL_NAME (decl)
&& !DECL_HARD_REGISTER (decl)
- && DECL_MODE (decl) != VOIDmode)
+ && DECL_MODE (decl) != VOIDmode
+ && (symtab->state <= CONSTRUCTION
+ || varpool_node::get (decl)))
{
rtl = make_decl_rtl_for_debug (decl);
if (!MEM_P (rtl)
