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Commit 7860c9bb authored by Davide Italiano's avatar Davide Italiano
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[SCCP] Partially propagate informations when the input is not fully defined. 

With this patch:
%r1 = lshr i64 -1, 4294967296 -> undef

Before this patch:
%r1 = lshr i64 -1, 4294967296 -> 0

llvm-svn: 269105
parent 1f4af49a
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