speed up conversions

ConversionProducer speeds up by 27% on run2012C jetHT.

very small regression.

On Jul 1, 2014, at 11:09 AM, StoyanStoynev <notifications@github.com>
 wrote:

> In RecoEgamma/EgammaPhotonAlgos/BuildFile.xml:
> 
> > @@ -1,3 +1,5 @@
> > +<flags   CXXFLAGS="-Ofast -mrecip"/>
> 
> Isn't this option (Ofast) too aggressive to use? As I understand even debugging becomes problematic with it. This would be the first introduction of it in CMSSW, am I right?
> 

a 27% speedup someplace can be worth the loss of debugging in a production environment? [I thought we had explicitly discussed this in  a reco meeting - but perhaps was a number of months ago]


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