[PATCH] D159267: [AArch64] Remove copy instruction between uaddlv and dup

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

We have a DAGCombine to transform dup(extract_element) to duplane, so with my suggestion the actual isel input would be "(AArch64duplane16 (AArch64uaddlv))", which is exactly the instructions produced by your pattern.


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  https://reviews.llvm.org/D159267/new/

https://reviews.llvm.org/D159267