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* add PR#Chris Lattner2011-02-131-0/+1
* implement instcombine folding for things like (x >> c) < 42.Chris Lattner2011-02-131-2/+11
* Enhance a bunch of transformations in instcombine to start generatingChris Lattner2011-02-101-0/+25
* Enhance the "compare with shift" and "compare with div" Chris Lattner2011-02-101-19/+78
* enhance vmcore to know that udiv's can be exact, and add a trivialChris Lattner2011-02-061-0/+60