[Bug rtl-optimization/67145] [6 Regression] associativity from pseudo-reg ordering

[ysrumyan at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67145

--- Comment #3 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
Created attachment 37120
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37120&action=edit
non-tested patch