Re: [PATCH][ARM] pr50193: ICE on a | (b << negative-constant)

[Richard Earnshaw]

On 01/09/11 16:51, Jakub Jelinek wrote:
> 1) shift by 0 is well defined (though not sure if arm backend
>    supports it)

The canonical form of
        (<any_shift> (x) (const_int 0))

is just

        (x)

So while it's well defined, it's also useless.