This allows us to release references to BLOCKs by not keeping
them rooted in the external_die_map but instead remove it from
there as soon as we created the corresponding stub DIE. For
decls it doesn't help since we still keep the decl_die_table.
Bootstrapped on x86_64-unknown-linux-gnu, testing in progress.
2020-11-03 Richard Biener <rguent...@suse.de>
* dwarf2out.c (maybe_create_die_with_external_ref): Remove
hashtable entry.
---
gcc/dwarf2out.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 534877babfb..64ac94a8cbd 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -5974,6 +5974,7 @@ maybe_create_die_with_external_ref (tree decl)
const char *sym = desc->sym;
unsigned HOST_WIDE_INT off = desc->off;
+ external_die_map->remove (decl);
in_lto_p = false;
dw_die_ref die = (TREE_CODE (decl) == BLOCK
--
2.26.2
