https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91178
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> --- Yeah, in the end it's still the vectorizers awkward [dead] code generation but for this testcase (for me) it recurses too deeply via the VN triggered by complete unrolling, doing vn_reference_maybe_forwprop_address recursively on the IL. Fortunately this specific case is easily dealt with (compile-time may still be an issue here I guess).
