[Bug middle-end/37150] vectorizer issue

[jv244 at cam dot ac dot uk]

------- Comment #4 from jv244 at cam dot ac dot uk  2008-08-19 10:53 -------
(In reply to comment #2)

> Note that the first complete unrolling pass unrolls loops that result in
> smaller code.  This interferes with vectorization in your case, so can
> you try

unfortunately, the patch below doesn't apply to trunk anymore. I applied it by
hand, and get similar improvements like the ones observed by Tobias.
Ifort                : 1.54s
Gfortran (unpatched) : 3.30s
Gfortran (patched)   : 1.94s


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37150