llvm dev - Oct 2014 - [LLVMdev] RFC: Should we have (something like) -extra-vectorizer-passes in -O2?

Seems that adding -extra-vectorizer-passes doesn't help to vectorizer
in my case. LoopRotation re-run does nothing.

2014-10-15 2:54 GMT+04:00 Chandler Carruth <chandlerc at
google.com>:
>
> On Tue, Oct 14, 2014 at 3:50 PM, Hal Finkel <hfinkel at anl.gov>
wrote:
>>
>> > I have and will continue to push
>> > back on trying to add it until we at least get a sane framework
for
>> > our *existing* pass pipelines though.
>>
>> And this makes me even more convinced that we might not all be on the
same
>> page ;) -- I really would like you to clarify exactly what this means,
and
>> what it has to do with registration of cleanup passes; or to put it
another
>> way, why cleanup-pass registration is not part of bringing further
sanity to
>> the configuration.
>
>
> I'm starting off assuming a fixed (IE, known up-front) transformation
pass
> pipeline. That's all.
>
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On Thu, Oct 16, 2014 at 7:55 AM, Zinovy Nis <zinovy.nis at gmail.com>
wrote:
> Seems that adding -extra-vectorizer-passes doesn't help to vectorizer
> in my case. LoopRotation re-run does nothing.
>
Can you reduce this to a test case you can share?
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----- Original Message -----
> From: "Chandler Carruth" <chandlerc at google.com>
> To: "Zinovy Nis" <zinovy.nis at gmail.com>
> Cc: "Hal Finkel" <hfinkel at anl.gov>, "James
Molloy" <james at jamesmolloy.co.uk>, "LLVM Developers Mailing
List"
> <llvmdev at cs.uiuc.edu>
> Sent: Thursday, October 16, 2014 1:21:19 PM
> Subject: Re: [LLVMdev] RFC: Should we have (something like)
-extra-vectorizer-passes in -O2?
> 
> 
> 
> 
> 
> On Thu, Oct 16, 2014 at 7:55 AM, Zinovy Nis < zinovy.nis at gmail.com
>
> wrote:
> 
> 
> 
> Seems that adding -extra-vectorizer-passes doesn't help to vectorizer
> in my case. LoopRotation re-run does nothing.
> 
> Can you reduce this to a test case you can share?
He had posted one earlier here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141006/238660.html
(Arnold had posted some analysis here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141006/239144.html
- which I imagine you saw)

 -Hal

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory