[PATCH] D21493: [ValueTracking] Teach computeKnownBits for PHI nodes to compute sign bit for a recurrence with a NSW addition.

Craig Topper via llvm-commits llvm-commits at lists.llvm.org
Thu Jun 23 22:27:10 PDT 2016

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craig.topper added a comment.

I've added the additional test case for negative staying negative.


http://reviews.llvm.org/D21493

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