https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97000
--- Comment #6 from Tom de Vries <vries at gcc dot gnu.org> --- I wonder if this will work: ... diff --git a/gcc/tree-cfgcleanup.c b/gcc/tree-cfgcleanup.c index f8169eef781..79f716b9dbe 100644 --- a/gcc/tree-cfgcleanup.c +++ b/gcc/tree-cfgcleanup.c @@ -212,7 +212,9 @@ static void cleanup_call_ctrl_altering_flag (basic_block bb, gimple *bb_end) { if (!is_gimple_call (bb_end) - || !gimple_call_ctrl_altering_p (bb_end)) + || !gimple_call_ctrl_altering_p (bb_end) + || (gimple_call_internal_p (bb_end) + && gimple_call_internal_unique_p (bb_end))) return; int flags = gimple_call_flags (bb_end); ...