[Bug c++/35117] Vectorization on power PC

rguenth at gcc dot gnu dot org gcc-bugzilla@gcc.gnu.org
Thu Feb 7 10:30:00 GMT 2008



------- 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).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35117



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