[Bug target/9760] [arm] Combine cannot do its job because immediate operand is used instead of register

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=9760

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Still happens on the trunk.
Note armv7-a produces reasonable code though as it uses ubfx which is new for
armv7-a:
        push    {r4, lr}
        mov     r4, r0
        movs    r0, #8
        lsrs    r1, r4, #24
        bl      func
        ubfx    r1, r4, #16, #8
        movs    r0, #8
        bl      func
        ubfx    r1, r4, #8, #8
        movs    r0, #8
        pop     {r4, lr}
        b       func