[PATCH] D84754: GlobalISel: Implement fewerElementsVector for G_INSERT_VECTOR_ELT

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: aemerson, paquette, aditya_nandakumar, dsanders.
Herald added subscribers: kerbowa, hiraditya, tschuett, tpr, rovka, nhaehnle, jvesely.
Herald added a project: LLVM.
arsenm requested review of this revision.
Herald added a subscriber: wdng.

Add unit tests since AMDGPU will only trigger this for gigantic
vectors, and won't use the annoying odd sized breakdown case.


https://reviews.llvm.org/D84754

Files:
  llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h
  llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
  llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/insertelement.large.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-insert-vector-elt.mir
  llvm/unittests/CodeGen/GlobalISel/LegalizerHelperTest.cpp

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