[Bug rtl-optimization/64537] Aarch64 redundant sxth instruction gets generated

[kugan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64537

--- Comment #5 from kugan at gcc dot gnu.org ---
Is this sort of multiple-use potential candidate for ree pass? Haven't looked
ree in detail yet.