[Bug target/77729] aarch64 inserts unneeded uxtb after ldrb, orr ...32

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77729

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This looks like missing removal of casts.

Note in C, char_var|32 is really the same as ((int)char_var)|32