[Bug tree-optimization/92243] Missing "auto-vectorization" of char array reversal using x86 scalar bswap when SIMD pshufb isn't available

[peter at cordes dot ca]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92243

--- Comment #1 from Peter Cordes <peter at cordes dot ca> ---
Forgot to mention, this probably applies to other ISAs with GP-integer
byte-reverse instructions and efficient unaligned loads.