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cd2c1d8db1
nodes to the DAG combining of them. This will allow the combine to fire on both old vector shuffle lowering and the new vector shuffle lowering and generally seems like a cleaner design. I've trimmed down the code a bit and tried to make it and the surrounding combine fairly clean while moving it around. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219042 91177308-0d34-0410-b5e6-96231b3b80d8
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