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Commit 28441ac7 authored by Simon Pilgrim's avatar Simon Pilgrim
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[DAGCombine] Add undef shuffle elt support to partitionShuffleOfConcats 

Support undef shuffle mask indices in the shuffle(concat_vectors, concat_vectors) -> concat_vectors fold

Differential Revision: https://reviews.llvm.org/D58585

llvm-svn: 354793
parent da79dcc3
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