[Bug middle-end/42298] [4.5 Regression] GCC fails validity in mdbx in polyhedral benchmark.

[nemokingdom at gmail dot com]

------- Comment #3 from nemokingdom at gmail dot com  2009-12-07 13:01 -------
Subject: Re:  [4.5 Regression] GCC fails validity in 
        mdbx in polyhedral benchmark.

Hi Rguenth,
On Mon, Dec 7, 2009 at 7:14 PM, rguenth at gcc dot gnu dot org
<gcc-bugzilla@gcc.gnu.org> wrote:
>
>
> ------- Comment #2 from rguenth at gcc dot gnu dot org  2009-12-07 11:14 -------
> Huh? Â Does plain -O2 work? Â Do I understand correctly that -O2 -fno-loop-block
> -fno-loop-strip-mine miscompiles?

Em, this benchmark can be compiled, but failed at validity of the benchmark
testing (passed 39 of 40). So I think this caused a runtime error.

-O2 also has this fail. I disable Graphite by -fno-loop-strip-mine
-fno-loop-block.
So I think it's not related to Graphite.

>
> Sebastian, how can disabling graphite options but not enabling graphite
> miscompile anything?? Â P1, please fix / comment.
>
>
> --
>
> rguenth at gcc dot gnu dot org changed:
>
>           What    |Removed                     |Added
> ----------------------------------------------------------------------------
> Â  Â  Â  Â  Â  Â  Â  Â  CC| Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â |spop at gcc dot gnu dot org
> Â  Â  Â  Â  Â  Keywords| Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â |wrong-code
> Â  Â  Â  Â  Â  Priority|P3 Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â |P1
>            Summary|GCC fails validity in mdbx  |[4.5 Regression] GCC fails
> Â  Â  Â  Â  Â  Â  Â  Â  Â  |in polyhedral benchmark. Â  Â |validity in mdbx in
> Â  Â  Â  Â  Â  Â  Â  Â  Â  | Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â |polyhedral benchmark.
> Â  Target Milestone|--- Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  |4.5.0
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42298
>
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>

Li


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42298