[PATCH] D157715: [AArch64][GISel] Enlarge Unmerge Artifact Combiner components

[Tuan Chuong Goh via Phabricator via llvm-commits]

chuongg3 created this revision.
chuongg3 added reviewers: dmgreen, arsenm, paquette, aemerson, SjoerdMeijer.
Herald added subscribers: kerbowa, kristof.beyls, jvesely.
Herald added a project: All.
chuongg3 requested review of this revision.
Herald added subscribers: llvm-commits, wangpc, wdng.
Herald added a project: LLVM.

Keep components of UNMERGE larger after running the Artifact Combiner on it.
This was intended to help with <v16i64> = G_SEXT <v16i16>, but implementation for legalizing EXT is in a following patch, therefore a test for this case will be included in the following patch


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157715

Files:
  llvm/include/llvm/CodeGen/GlobalISel/LegalizationArtifactCombiner.h
  llvm/test/CodeGen/AMDGPU/GlobalISel/artifact-combiner-unmerge-values.mir

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