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Re: [lno] fix division by zero
- From: Dorit Naishlos <DORIT at il dot ibm dot com>
- To: Richard Henderson <rth at redhat dot com>
- Cc: Daniel Berlin <dberlin at dberlin dot org>, Andreas Jaeger <aj at suse dot de>, Pop Sébastian <pop at gauvain dot u-strasbg dot fr>, gcc-patches at gcc dot gnu dot org
- Date: Mon, 5 Jan 2004 11:30:00 +0200
- Subject: Re: [lno] fix division by zero
Richard Henderson wrote:
> > At the end of tree-vectorizer.h you can set
> > #define DBG_VECT(A)
> > to
> > #define DBG_VECT(A) A
> > to get information on why vectorization did not occur.
> > Setting
> > #define DBG_VECT2(A) A
> > will spit even more details.
> >
> > It should be changed to be cotrolled by a flag.
>
> It should *always* be emitted to the debug file
> and *never* to stderr.
Yes. This should be cleaned up. Adopting Daniel's interpretation of the
flags (http://gcc.gnu.org/ml/gcc-patches/2004-01/msg00196.html), the above
macros can be mapped roughly as follows -
printouts under DBG_VEC --> TDF_stats ("how much of something we did").
printouts under DBG_VECT --> TDF_details ("*why* things happened. Like why
we didn't vectorize something").
printouts under DBG_VECT2 --> TDF_debug ("Debugging information").
The code may not follow this convention strictly, but at least that was the
general intention.
dorit
Richard Henderson
<rth@redhat.com> To: Dorit Naishlos/Haifa/IBM@IBMIL
cc: Daniel Berlin <dberlin@dberlin.org>, Toon Moene
05/01/2004 02:52 <toon@moene.indiv.nluug.nl>, Pop Sébastian <pop@gauvain.u-strasbg.fr>,
gcc-patches@gcc.gnu.org
Subject: Re: [lno] fix division by zero
On Sun, Jan 04, 2004 at 10:22:27AM +0200, Dorit Naishlos wrote:
> At the end of tree-vectorizer.h you can set
> #define DBG_VECT(A)
> to
> #define DBG_VECT(A) A
> to get information on why vectorization did not occur.
> Setting
> #define DBG_VECT2(A) A
> will spit even more details.
>
> It should be changed to be cotrolled by a flag.
It should *always* be emitted to the debug file
and *never* to stderr.
r~