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Re: IVOPT improvement patch


Just to clarify -- this patch is not the cause for this regression, right?

David

On Thu, Jul 29, 2010 at 7:14 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
> On Wed, Jul 28, 2010 at 8:50 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
>> On Wed, Jul 28, 2010 at 6:07 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
>>> On Tue, Jul 27, 2010 at 1:20 PM, Xinliang David Li <davidxl@google.com> wrote:
>>>> On Tue, Jul 27, 2010 at 12:57 PM, Pat Haugen <pthaugen@us.ibm.com> wrote:
>>>>>>
>>>>>> Thanks Sebatian for testing it out. I also asked Pat to help testing
>>>>>> the patch again on powerpc. I will first split off the unrelated
>>>>>> patches and submit them first (e.g, multiple exit loop handling etc).
>>>>>>
>>>>>
>>>>> There were 2 good improvements on PowerPC, the rest were pretty much a wash
>>>>> (< +/-2%):
>>>>>
>>>>> 410.bwaves ? ? ?10.0%
>>>>> 434.zeusmp ? ? ?6.6%
>>>>>
>>>>> One thing I did notice however is that comparing these results to the run I
>>>>> did back in May on an earlier version of the patch is that both
>>>>> improvements dropped. bwaves was 27% on that run and zeusmp was 8.4%. I
>>>>> don't have the old builds around, but could recreate if you're not aware of
>>>>> anything to explain the drop.
>>>>>
>>>>
>>>> Thanks. I will check in this version first and do some triaging on the
>>>> performance drop (with your help). ?One thing to be aware is that
>>>> r161844 was checked in during this period of time which might be
>>>> related, but not sure until further investigation -- the two stage
>>>> initial iv set computation introduced by the patch may not be needed
>>>> (if this patch is in).
>>>>
>>>
>>> Your checkin caused:
>>>
>>> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45119
>>>
>>
>> This also caused:
>>
>> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45121
>>
>
> This may also cause:
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45131
>
>
> --
> H.J.
>


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