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61ffa8e373
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Author SHA1 Message Date
Dan Gohman
61ffa8e373 Instcombine's ShrinkDemandedConstant may strip bits out of constants, 
obscuring what would otherwise be a low-bits mask.  Use ComputeMaskedBits
to compute what ShrinkDemandedConstant knew about to reconstruct a
low-bits mask value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73540 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-16 19:52:01 +00:00