https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83941
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I didn't yet try to quantify the amount of possible savings with pruning (well,
I tried with the simple patch but that keeps ICEing ... ;)).
Jakub, any opinion on the best approach here?
We eventually could, for DW_TAG_variables in local scopes, prune them when
we fail to annotate them (aka create them late) - that's maybe early enough
to avoid references from location lists (OTOH debug stmts might contain
references to them...).
Of course a post-processing tool like dwz could also remove them if they are
unused.
