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Simon Pilgrim 4fa00a57a9 [X86][AVX] Fold vt1 concat_vectors(vt2 undef, vt2 broadcast(x)) --> vt1 broadcast(x)
If we're not inserting the broadcast into the lowest subvector then we can avoid the insertion by just performing a larger broadcast.

Avoids a regression when we enable AVX1 broadcasts in shuffle combining

llvm-svn: 352742
2019-01-31 11:15:05 +00:00
2019-01-31 01:47:29 +00:00
2019-01-27 18:41:40 +00:00
2019-01-31 00:42:02 +00:00
2016-01-26 21:29:08 +00:00
2018-09-22 01:01:03 +00:00

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