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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. 2020-11-03 Richard Biener <rguenther@suse.de> * dwarf2out.c (maybe_create_die_with_external_ref): Remove hashtable entry.
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