[Bug tree-optimization/104582] [11 Regression] Unoptimal code for __negdi2 (and others) from libgcc2 due to unwanted vectorization

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104582

--- Comment #23 from Richard Biener <rguenth at gcc dot gnu.org> ---
I do not plan to backport this given it's quite intrusive and had some fallout.