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Re: HIRLAM with -ftree-loop-distribution.
- From: Dorit Nuzman <DORIT at il dot ibm dot com>
- To: Toon Moene <toon at moene dot indiv dot nluug dot nl>
- Cc: GCC <gcc at gcc dot gnu dot org>, Uros Bizjak <ubizjak at gmail dot com>
- Date: Sun, 16 Dec 2007 16:02:07 +0200
- Subject: Re: HIRLAM with -ftree-loop-distribution.
> Uros Bizjak wrote:
>
> >> note: not vectorized: vectorization may not beprofitable.
> >
> > This is due to switching on vector cost model by default for x86.
>
> Ah, but my hidden critique of the message was:
> -ftree-vectorizer-verbose=2 should *only* tell us:
>
> 1. Which loops are vectorized.
> 2. Which are not - and why (in a single sentence).
>
> For more detailed logging, one should use -ftree-vectorizer-verbose=n
> with n>2, IMNSHO.
>
yes, you are right. this printing should be either removed (as it's anyhow
already being printed also under REPORT_DETAILS), or we may want to add a
new verbosity level (lower than REPORT_DETAILS) for cost-model info
("REPORT_COST").
dorit
> Kind regards,
>
> --
> Toon Moene - e-mail: toon@moene.indiv.nluug.nl - phone: +31 346 214290
> Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
> At home: http://moene.indiv.nluug.nl/~toon/
> GNU Fortran's path to Fortran 2003: http://gcc.gnu.org/wiki/Fortran2003