On Sun, 19 Feb 2012, Kumar, Venkataramanan wrote:

Sphinx3 benchmark segmented when built and ran with -Ofast and 
-fprefecth-loop-arrays.
[...]
In my case the register 367 is sNAN.

-Ofast implies -ffast-math which implies -ffinite-math-only:
    Allow optimizations for floating-point arithmetic that assume that
    arguments and results are not NaNs or +-Infs.

so I am not sure what you expect exactly.

--
Marc Glisse

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