[Bug rtl-optimization/116645] [13/14/15 regression] Huge performance loss after 13.2.0 compiler upgrade; reload CSE regs has scalability issues

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116645

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 59080
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59080&action=edit
unincluded testcase

This testcase works with all GCCs from 11.4 to trunk.