[Bug tree-optimization/96172] Failure to optimize direct assignment to bitfield through shifts

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96172

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note for aarch64 GCC produces decent code already (since GCC 9):
f1(unsigned int):
.LFB0:
        .cfi_startproc
        ubfx    x0, x0, 16, 3
        ret

But the gimple level is missed ...