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Commit 00102c7d authored by Johannes Doerfert's avatar Johannes Doerfert
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[ValueTracking] Look through casts when determining non-nullness 

Bitcast and certain Ptr2Int/Int2Ptr instructions will not alter the
value of their operand and can therefore be looked through when we
determine non-nullness.

Differential Revision: https://reviews.llvm.org/D54956

llvm-svn: 352293
parent 204bf2bb
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