[Bug target/115777] [12/13/14/15 regression] Severe performance regression on insertion sort at -O2 or above

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115777

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
I hope to get to this during stage3/4, I think it should be relatively easy to
detect, not exactly sure where to place the actual mitigation yet.