https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116856
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|WAITING |RESOLVED
--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Robert Hölzl from comment #9)
> I know that this solves the problem (as I wrote in my last comment).
>
> But why does GCC handle an inline typecast (uint32_t __attribute__
> ((__aligned__(1)))*) different from a typecast to an typedef (u32_u*) when
> the typedef is identical to the inline typecast?
>
> In other words:
>
> typedef uint32_t __attribute__((aligned(1))) u32_u;
> uint32_t x = *(u32_u *) y;
>
> should be identical to
>
> uint32_t x = *(uint32_t __attribute__ ((__aligned__(1)) *) y;
>
> right?
>
> But the latter one is generating wrong code (which contains LDRD)
The aligned in `uint32_t __attribute__ ((__aligned__(1)) *` gets attached to
the pointer type rather than what it is being pointed to.
