[Bug tree-optimization/89475] Teach ccp about __builtin_bswap{16,32,64}

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89475

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #2)
> x &= 0xaa55;
>   x = __builtin_bswap16 (x);
>   if (x & 0xaa55)
> 
> 
> I think that should be:
> x &= 0xaa55;
>   x = __builtin_bswap16 (x);
>   if (x & 0x55aa)
> 
> instead.

Never mind; I can't do math this morning, ~0xaa55 is 0x55aa :).