[Bug tree-optimization/51499] vectorizer missing simple case

[irar at il dot ibm.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51499

Ira Rosen <irar at il dot ibm.com> changed:

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                 CC|                            |irar at il dot ibm.com

--- Comment #1 from Ira Rosen <irar at il dot ibm.com> 2011-12-11 07:37:36 UTC ---
You need -ffast-math to allow floating point reduction.
You also need -fno-vect-cost-model, because the vectorization is not profitable
in this case.