[Bug tree-optimization/121225] Missed autovectorization of bswap8 in a loop

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121225

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the bswap pass should instead re-use the original load and truncate it
instead of emitting another one.