https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68851
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Caused by r231540:
commit 15a1fce36358508909f2013fd6d07e0b9fcad97a
Author: hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Dec 10 19:20:14 2015 +0000
* ipa-cp.c (ipcp_cloning_candidate_p): Use node->optimize_for_size_p.
(good_cloning_opportunity_p): Likewise.
(gather_context_independent_values): Do not return true when
polymorphic call context is known or when we have known aggregate
value of unused parameter.
(estimate_local_effects): Try to create clone for all context
when either some params are substituted or devirtualization is possible
or some params can be removed; use local flag instead of
node->will_be_removed_from_program_if_no_direct_calls_p.
(identify_dead_nodes): Likewise.
* gcc.c-torture/execute/20010122-1.c: Disable cloning.
