Fix ComputeMaskedBits to handle phis correctly. We need to take the
authorDavid Greene <greened@obbligato.org>
Thu, 21 Aug 2008 20:45:12 +0000 (20:45 +0000)
committerDavid Greene <greened@obbligato.org>
Thu, 21 Aug 2008 20:45:12 +0000 (20:45 +0000)
minimum of the known zeros.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55137 91177308-0d34-0410-b5e6-96231b3b80d8


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