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5ed8a767a0
Remove an unnecessary `MDNode::replaceAllUsesWith()`. In the preceding line, `TheLoop->setLoopID()` visits all backedges and sets the new loop ID. This sufficiently updates the loop metadata. Metadata RAUW is going away as part of PR21532. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223210 91177308-0d34-0410-b5e6-96231b3b80d8
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