[lto] Fix 34 testsuite failures

[Richard Guenther]

On Wed, May 13, 2009 at 10:21 PM, Diego Novillo <dnovillo@google.com> wrote:
> On Wed, May 13, 2009 at 16:20, Diego Novillo <dnovillo@google.com> wrote:
>
>> the scheduler was moving the load of u.i before the store to u.i.
>
> er, 'store of u.c'.

Yeah, the dependence checking routines first defer to TBAA then to
offset disambiguation.  It would need similar handling.

Maybe I'll look at this, for now I'll file a bugreport - using alias
set zero for
these accesses obviously pessimizes disambiguating of union accesses
against random other stuff.

Richard.

>
> Diego.
>