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Re: [pooma-dev] Evaluator/ReductionEvaluator.h question
From: |
Richard Guenther |
Subject: |
Re: [pooma-dev] Evaluator/ReductionEvaluator.h question |
Date: |
Fri, 21 Feb 2003 19:18:39 +0100 (CET) |
On Fri, 21 Feb 2003, Richard Guenther wrote:
> On Fri, 21 Feb 2003, Mark Mitchell wrote:
>
> >
> >
> > --On Friday, February 21, 2003 06:36:07 PM +0100 Richard Guenther
> > <address@hidden> wrote:
> >
> > > I expected some critics on the patch, namely the following...
> > > (so I delay committing this).
> >
> > At one point, I think people wanted POOMA to be able to work on any types
> > that had normal arithmetic properties (roughly speaking, those that form a
> > field, in the algebraic sense.) So, I'm not sure if explicitly initializng
> > things to "1" and such makes sense.
>
> Hmm - at least for such a type constructing from a 1 or 0 element as
> neutral element of multiplication/addition does make sense. Requiring
> numerical_limits<> specialization maybe, too.
>
> > But, I don't really know much about this -- it could be I'm totally off.
>
> Me too - maybe someone can think of a problematic case here. At least the
> patch brings a nice speedup and code size improvement for gcc3.2.
Just stubled over Field/FieldOffset.h which does reductions on
FieldOffsetLists the same way the old implementation did. But here all
loops are 1D, so no performance/code impact.
Richard.
- Evaluator/ReductionEvaluator.h question, Richard Guenther, 2003/02/18
- Re: [pooma-dev] Evaluator/ReductionEvaluator.h question, Richard Guenther, 2003/02/19
- Re: [pooma-dev] Evaluator/ReductionEvaluator.h question, Richard Guenther, 2003/02/21
- Re: [pooma-dev] Evaluator/ReductionEvaluator.h question, Mark Mitchell, 2003/02/21
- Re: [pooma-dev] Evaluator/ReductionEvaluator.h question, Richard Guenther, 2003/02/21
- Re: [pooma-dev] Evaluator/ReductionEvaluator.h question,
Richard Guenther <=
- Re: [pooma-dev] Evaluator/ReductionEvaluator.h question, Mark Mitchell, 2003/02/21
- Re: [pooma-dev] Evaluator/ReductionEvaluator.h question, Richard Guenther, 2003/02/21
- Re: [pooma-dev] Evaluator/ReductionEvaluator.h question, Mark Mitchell, 2003/02/21
- Re: [pooma-dev] Evaluator/ReductionEvaluator.h question, Paul C. Leopardi, 2003/02/21