[Bug target/115974] sat_add, etc. vector patterns not done for aarch64 (non-sve)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115974

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
ssadd_optab -> SQADD 
usadd_optab -> UQADD
sssub_optab -> SQSUB
ussub_optab -> UQSUB

(<su>q<addsub>)

ustrunc_optab -> UQXTN
sstrunc_optab -> SQXTN

(aarch64_<su>qmovn<mode><vczle><vczbe>)