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Summary: Depends on D22841 We now use a much simpler CFG simplification routine for bugpoint, because SimplifyCFG is no longer a good match for what bugpoint wants to do. At the same time, to make sure we don't lose anything valuable it was doing, SimplifyCFG is now run as a per-BB reduction pass. With this and D22841 combined, bugpoint operates both much faster on the large testcases i have, and reduces them to pretty much minimal testcases (in one case, bugpoint used to leave about 6000 useless blocks, and now it leaves 3 ...) Reviewers: chandlerc, majnemer Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D22845 llvm-svn: 277063