[Bug target/128440] [14/15/16/17 Regression] BPF incorrectly expands backwards memmove

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128440

--- Comment #10 from David Faust <dfaust at gcc dot gnu.org> ---
It should also be improved to emit only either the forwards or backwards loop
if the relationship between source and dest is known at compile time.