https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68117
--- Comment #11 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- (In reply to rguent...@suse.de from comment #10) > > > > Valgrind points to r228599: > > Nothing obvious but does removing > > mark_virtual_operands_for_renaming (cfun); > > help? It's the only thing that may end up releasing SSA names > (if only virtuals). No, it doesn't help. But reverting r228760 and r228599 fixes the issue.