[PATCH] D75547: [AMDGPU][GlobalISel] Revise handling of wide loads in RegBankSelect

[Austin Kerbow via Phabricator via llvm-commits]

kerbowa created this revision.
kerbowa added a reviewer: arsenm.
Herald added subscribers: llvm-commits, hiraditya, t-tye, tpr, dstuttard, rovka, yaxunl, nhaehnle, wdng, jvesely, kzhuravl.
Herald added a project: LLVM.

When splitting loads in RegBankSelect G_EXTRACT_VECTOR_ELT were being added
which could not be selected. Since invoking the legalizer will generate
instructions that split and combine wide loads, we can remove the redundant
repair instructions which are added by RegBankSelect.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D75547

Files:
  llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-load.mir

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