[Bug rtl-optimization/63616] PRE failure

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63616

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 33778
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33778&action=edit
_.178r.cprop1 and _.179r.pre RTL dumps