From cTuning.org
Navigation: cTuning.org > CTools
MILEPOST GCC is machine learning enabled self-tuning research compiler based on ICI and IBM static program feature extractor. We currently moving all our prototypes to the GCC 4.4 and should be able to move all the developments here in Spring, 2009. Please, be patient ;) !..
Here is the list of current static program features.
You can find more information here.