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2fbbf9299e
PPCScoreboardHazardRecognizer was a subclass of ScoreboardHazardRecognizer which did only one thing: filtered out nodes in EmitInstruction for which DAG->getInstrDesc(SU) returned NULL. This used to be the case for PPC pseudo instructions. As far as I can tell, this is no longer true, and so we can use ScoreboardHazardRecognizer directly. llvm-svn: 196171