[Bug tree-optimization/102788] [12 Regression] Wrong code with -O3

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102788

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 51621
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51621&action=edit
patch I am testing