[PATCH] Improve BasicAA Pass Using zext Information

Nick White n.j.white at gmail.com
Tue Sep 30 06:38:24 PDT 2014

@hfinkel - thanks for your patience, I understand it now. I was basically trying to re-invent isValueEqualInPotentialCycles, so I've cut that bit completely from the patch. I've also added the ComputeSignBit check you suggested, and a test using lshr to demonstrate that it works.


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