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Johannes Doerfert
2b6e753087
[Attributor] Simplify comparison against constant null pointer
Comparison against null is a common pattern that usually is followed by error handling code and the likes. We now use AANonNull to simplify these comparisons optimistically in order to make more code dead early on. Reviewed By: uenoku Differential Revision: https://reviews.llvm.org/D86145
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