[PATCH] D98515: [AMDGPU][GlobalISel] Stop foldInsertEltToCmpSelect from changing reg banks

[Mirko Brkusanin via Phabricator via llvm-commits]

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This function can change regbank for registers which already have a selected
bank. Depending on the instruction where these registers were used it can
cause instruction selection to fail.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D98515

Files:
  llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/insertelement.i8.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/insertelement.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-insert-vector-elt.mir

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