[PATCH] D81993: [AArch64][GlobalISel] Add artifact combine for sext(trunc(sextload)) -> trunc/copy

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

This doesn't seem necessary for correctness? I think we do need some optimizing combines in the legalizer itself, but I assumed we would start putting those in a distinct place


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D81993/new/

https://reviews.llvm.org/D81993