[Bug middle-end/90323] powerpc should convert equivalent sequences to vec_sel()

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90323

--- Comment #14 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to luoxhu from comment #12)
> That code was called by combine pass but fail to match. 

> 
> pr newpat
> (set (reg:DI 125 [ l ])
>     (xor:DI (and:DI (xor:DI (reg/v:DI 120 [ l ])
>                 (reg:DI 127))
>             (const_int 267390975 [0xff00fff]))
>         (reg/v:DI 120 [ l ])))

Note this is 0x0ff00fff, and this is not a valid mask for rlwimi.