This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [lno] fix division by zero
- From: Dorit Naishlos <DORIT at il dot ibm dot com>
- To: Daniel Berlin <dberlin at dberlin dot org>, Toon Moene <toon at moene dot indiv dot nluug dot nl>
- Cc: Pop Sébastian <pop at gauvain dot u-strasbg dot fr>, gcc-patches at gcc dot gnu dot org
- Date: Sun, 4 Jan 2004 10:22:27 +0200
- Subject: Re: [lno] fix division by zero
> Well, I tried, and I tried, but I can't get no ... vectorization:
That's because the vectorizer currently doesn't support unary operations.
It's very trivial to add this support, and I will, shortly. A lot of the
restrictions that are imposed right now are entirely arbitrary - I posted
the vectorizer as soon as there was an infrastructure with some minimal
vectorization capabilities. The more trivial limitations will be the first
ones to be removed.
> It appears it doesn't dump why vectorization did or did not occur, even
> with -details.
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.
dorit