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Re: dataflow branch merging plans.


Kenneth Zadeck wrote:
> Bernd Schmidt wrote:
>> Kenneth Zadeck wrote:
>>   
>>> I believe that the dataflow branch is now ready to merge into the
>>> mainline.  We have fixed almost all of the performance problems
>>> associated with it.  While there are still some left, we feel
>>> confident that these can be addressed during the rest of stage I and
>>> during stage II.
>>>     
>> Vlad's last benchmark run still showed up to 11% compile time
>> regression, didn't it?
>>
>>
>> Bernd
>>   
> The ia-64 is an outlier at 11% as is the ppc at .9%.  I think that it is
> quite likely that there is some ia-64 unique pass, like one of the
> schedulers, that needs a look at.  This will be addressed after the merge. 

Still, 6% compile time regression on several targets and typically a
(very small) regression in SPEC scores - am I the only one who's not
impressed?  We don't normally accept patches with these kinds of
results, and I don't see why we should make an exception here.

Why the rush to merge now?  How exactly will it make 4.3 better?

Finally, since a plan to merge next week was indicated - which
maintainer has approved it?


Bernd
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