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Commit 45951a66 authored by David Majnemer's avatar David Majnemer
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[InstCombine] (mul nsw 1, INT_MIN) != (shl nsw 1, 31) 

Multiplying INT_MIN by 1 doesn't trigger nsw.  However, shifting 1 into
the sign bit *does* trigger nsw.

llvm-svn: 235250
parent 279e3ee9
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