On 12/14/2010 12:28 PM, kevin diggs wrote:
Does the -ffast-math option speed up operations enough to make
fighting with mozilla/firefox source worth the trouble? I think the
main problem is identifying NaNs.
If you want consistent treatment of NaNs, -ffast-math is not your
choice. The biggest speedups come in the auto-vectorization of sum and
dot product reductions, and in the complex arithmetic shortcuts. Those
seem unlikely to be relevant to firefox, but I don't know why firefox
would depend on correct treatment of NaNs either.
--
Tim Prince
