[Bug tree-optimization/78248] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu (in both 32-bit and 64-bit modes)

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78248

--- Comment #14 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 40005
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40005&action=edit
good combine dump