https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91772
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, so this happens when the DIE was not created early (due to -g1) then we do
/* We may have to generate early debug late for LTO in case debug
was not enabled at compile-time or the target doesn't support
the LTO early debug scheme. */
if (! die && in_lto_p)
{
dwarf2out_decl (decl);
die = lookup_decl_die (decl);
}
where dwarf2out_decl already adds a DW_AT_location attribute. Then
we fall through to
if (die)
{
/* We get called via the symtab code invoking late_global_decl
for symbols that are optimized out.
Do not add locations for those, except if they have a
DECL_VALUE_EXPR, in which case they are relevant for debuggers.
Still don't add a location if the DECL_VALUE_EXPR is not a trivial
INDIRECT_REF expression, as this could generate relocations to
text symbols in LTO object files, which is invalid. */
varpool_node *node = varpool_node::get (decl);
if ((! node || ! node->definition)
&& ! (DECL_HAS_VALUE_EXPR_P (decl)
&& is_trivial_indirect_ref (DECL_VALUE_EXPR (decl))))
tree_add_const_value_attribute_for_decl (die, decl);
else
add_location_or_const_value_attribute (die, decl, false);
}
obviously above we're not only creating "early" debug. It seems obvious
to me that we want to skip the later code which is intended for early
dwarf only.
