https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116214
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's a false positive, the init gate is 'costing_p' we have
if (!costing_p)
stride_step = ...;
for (...)
for (...)
{
if (costing_p)
continue;
... use of stride_step ...
