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eb83f4e6cd
"LCSSA" phi node causes indvars to break dominance properties. This fixes causes indvars to avoid inserting aggressive code in this case, instead indvars should be fixed to be more aggressive in the face of lcssa phi's. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28850 91177308-0d34-0410-b5e6-96231b3b80d8
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