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Commit ef460460 authored by Simon Pilgrim's avatar Simon Pilgrim
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[X86] combineConcatVectorOps - add handling for X86ISD::VPERM2X128 nodes. 

On AVX512 targets we can concatenate these and create a X86ISD::SHUF128 node.

Prevents regression on some future work to improve codegen for concat_vectors(extract_subvector(),extract_subvector()) (mainly via vector widening) patterns.
parent 4a02d1e7
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