http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51499
Ira Rosen <irar at il dot ibm.com> changed:
What |Removed |Added
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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
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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.
