[Bug rtl-optimization/111143] [missed optimization] unlikely code slows down diffutils x86-64 ASCII processing

[eggert at cs dot ucla.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111143

--- Comment #1 from Paul Eggert <eggert at cs dot ucla.edu> ---
Created attachment 55789
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55789&action=edit
asm code generated by gcc -O2 -S