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ef0c6744d5
new instructions it simplifies. Because we're threading jumps on edges with constants coming in from PHI's, we inherently are exposing a lot more constants to the new block. Folding them and deleting dead conditions allows the cost model in jump threading to be more accurate as it iterates. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60327 91177308-0d34-0410-b5e6-96231b3b80d8
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