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Commit 965c769b authored by Chris Lattner's avatar Chris Lattner
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move ComputeMaskedBits, MaskedValueIsZero, and ComputeNumSignBits 

out of instcombine into a new file in libanalysis.  This also teaches
ComputeNumSignBits about the number of sign bits in a constantint.

llvm-svn: 51863
parent 3fe4651e
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