[Bug target/65250] [SH] Improve comparisons followed by a negated cstore

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65250

--- Comment #2 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Briefly checked this one on GCC-13.  It generates the optimal sequence.