Krzysztof Parzyszek 0f791f44c7 [Hexagon] Remove dead nodes from SelectionDAG to avoid cycles ...

Recent changes to the instruction selection code exposed a problem where
a dead node was not removed on time. This node had both input and output
chains, which lead to an apparent cycle.

llvm-svn: 269458

2016-05-13 18:48:15 +00:00

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