caio/clang-p2996
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clang-p2996/llvm/lib/Analysis/ValueTracking.cpp
Craig Topper df7454f94b Revert "[ValueTracking] Teach computeKnownBits for PHI nodes to compute sign bit for a recurrence with a NSW addition." 
This is breaking an optimizaton remark test in clang. I've identified a couple fixes for that, but want to understand it better before I commit to anything.

llvm-svn: 274102
2016-06-29 04:57:00 +00:00

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