[Bug middle-end/37150] basic-block vectorization misses some unrolled loops

[Joost.VandeVondele at mat dot ethz.ch]

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

--- Comment #15 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> 2013-03-27 12:53:16 UTC ---
Created attachment 29738
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29738
maybe smaller testcase version ?

Attached is what I think is roughly the smallest kernel of this type that we
have in the code. I checked this is at least partially vectorized with ifort,
but not so with gfortran trunk. It is still not such a small testcase, I'm
afraid.