This removes the DW_TAG_imported_unit we generate for each referenced
early debug unit in LTRANS units. They are more harmful than they
do good and the semantics can be read in a way making it even wrong.
LTO bootstrapped and tested on x86_64-unknown-linux-gnu, applied.
Richard.
2020-04-02 Richard Biener <rguent...@suse.de>
PR debug/94450
* dwarf2out.c (dwarf2out_early_finish): Remove code emitting
DW_TAG_imported_unit.
---
gcc/dwarf2out.c | 18 ------------------
1 file changed, 18 deletions(-)
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 378a27394e8..d68367eee3e 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -32040,24 +32040,6 @@ dwarf2out_early_finish (const char *filename)
sure to adjust the phase after annotating the LTRANS CU DIE. */
if (in_lto_p)
{
- /* Force DW_TAG_imported_unit to be created now, otherwise
- we might end up without it or ordered after DW_TAG_inlined_subroutine
- referencing DIEs from it. */
- if (! flag_wpa && flag_incremental_link != INCREMENTAL_LINK_LTO)
- {
- unsigned i;
- tree tu;
- if (external_die_map)
- FOR_EACH_VEC_SAFE_ELT (all_translation_units, i, tu)
- if (sym_off_pair *desc = external_die_map->get (tu))
- {
- dw_die_ref import = new_die (DW_TAG_imported_unit,
- comp_unit_die (), NULL_TREE);
- add_AT_external_die_ref (import, DW_AT_import,
- desc->sym, desc->off);
- }
- }
-
early_dwarf_finished = true;
if (dump_file)
{
--
2.12.3
