This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug c++/35117] Vectorization on power PC
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Feb 2008 10:29:44 -0000
- Subject: [Bug c++/35117] Vectorization on power PC
- References: <bug-35117-15734@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from rguenth at gcc dot gnu dot org 2008-02-07 10:29 -------
The testcase looks completely memory bound. Does the compiler tell you it
does vectorization at all? Have you tried without -fprefetch-loop-arrays
(with todays HW prefetchers and the simple access patterns it's probably not
a win here).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35117