[PATCH] InstCombineCompare with constant return false if we know it is never going to be equal

Nick Lewycky nlewycky at gmail.com
Wed Jun 18 00:08:17 PDT 2014

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computeKnownBits is really expensive. Please check ICmpInst::isEquality(Pred) before the rest of this logic. LGTM with that change.

http://reviews.llvm.org/D3868

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