[Bug rtl-optimization/69592] [6 Regression] Compile-time and memory-use hog in combine

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69592

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 37540
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37540&action=edit
reduced testcase