Simon Pilgrim ef78e55205 [SelectionDAG] Fold insert_subvector(undef, extract_subvector(v, c), c) -> v in getNode ...

This is already done in DAGCombiner::visitINSERT_SUBVECTOR, but this helps a number of shuffles across different vector widths recognise when they come from the same source.

llvm-svn: 363542

2019-06-17 10:14:52 +00:00

349 KiB

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