This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [lto] Fix 34 testsuite failures


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.
>


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]