[PATCH] D97731: [AArch64][GlobalISel] Lower G_BUILD_VECTOR -> G_DUP

[Jessica Paquette via Phabricator via llvm-commits]

paquette added a comment.

Looks like this blocks selecting vector neg since we miss some imported patterns. E.g.

  // (sub:{ *:[v2i32] } immAllZerosV:{ *:[v2i32] }, V64:{ *:[v2i32] }:$Rn)  =>  (NEGv2i32:{ *:[v2i32] } V64:{ *:[v2i32] }:$Rn)

Is there any way to get a G_DUP with 0 to match here?


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  https://reviews.llvm.org/D97731/new/

https://reviews.llvm.org/D97731