[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 #8 from Igor Zamyatin <izamyatin at gmail dot com> ---
Created attachment 34524
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34524&action=edit
patch to try AIX bootstrap