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Summary: Found a couple of places in the code where all the PHI nodes of a MBB is updated, replacing references to one MBB by reference to another MBB instead. This patch simply refactors the code to use a common helper (MachineBasicBlock::replacePhiUsesWith) for such PHI node updates. Reviewers: t.p.northover, arsenm, uabelho Subscribers: wdng, hiraditya, jsji, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D66750 llvm-svn: 370463
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