[Bug rtl-optimization/64081] [5 Regression] r217827 prevents RTL loop unroll

[izamyatin at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64081

--- Comment #15 from Igor Zamyatin <izamyatin at gmail dot com> ---
Got an access to AIX machine, planning to look at it next week